From e8ac2947ab842e4ff4d3aa5c976bb79ce9c62b28 Mon Sep 17 00:00:00 2001 From: tildearrow Date: Sat, 11 Dec 2021 02:10:09 -0500 Subject: [PATCH] prepare for the GUI! --- .gitmodules | 3 + CMakeLists.txt | 43 +- extern/igfd/ImGuiFileDialog.cpp | 5059 +++++++++++++++++ extern/igfd/ImGuiFileDialog.h | 1594 ++++++ extern/igfd/ImGuiFileDialogConfig.h | 97 + extern/igfd/LICENSE | 21 + extern/igfd/README.md | 928 ++++ extern/igfd/dirent/ChangeLog | 129 + extern/igfd/dirent/LICENSE | 21 + extern/igfd/dirent/README.md | 96 + extern/igfd/dirent/dirent.h | 1160 ++++ extern/igfd/stb/LICENSE | 37 + extern/igfd/stb/README.md | 165 + extern/igfd/stb/stb_image.h | 7762 +++++++++++++++++++++++++++ extern/igfd/stb/stb_image_resize.h | 2631 +++++++++ extern/imgui | 1 + src/gui/gui.cpp | 9 + src/gui/gui.h | 9 + 18 files changed, 19753 insertions(+), 12 deletions(-) create mode 100644 extern/igfd/ImGuiFileDialog.cpp create mode 100644 extern/igfd/ImGuiFileDialog.h create mode 100644 extern/igfd/ImGuiFileDialogConfig.h create mode 100644 extern/igfd/LICENSE create mode 100644 extern/igfd/README.md create mode 100644 extern/igfd/dirent/ChangeLog create mode 100644 extern/igfd/dirent/LICENSE create mode 100644 extern/igfd/dirent/README.md create mode 100644 extern/igfd/dirent/dirent.h create mode 100644 extern/igfd/stb/LICENSE create mode 100644 extern/igfd/stb/README.md create mode 100644 extern/igfd/stb/stb_image.h create mode 100644 extern/igfd/stb/stb_image_resize.h create mode 160000 extern/imgui create mode 100644 src/gui/gui.cpp create mode 100644 src/gui/gui.h diff --git a/.gitmodules b/.gitmodules index 12644aff..ede0e0d1 100644 --- a/.gitmodules +++ b/.gitmodules @@ -9,3 +9,6 @@ path = extern/libsndfile url = https://github.com/libsndfile/libsndfile.git branch = master +[submodule "extern/imgui"] + path = extern/imgui + url = https://github.com/ocornut/imgui.git diff --git a/CMakeLists.txt b/CMakeLists.txt index 6cdbd30b..09724969 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -3,6 +3,12 @@ project(furnace) set(CMAKE_CXX_STANDARD 14) +if (ANDROID) + set(BUILD_GUI OFF) +else() + set(BUILD_GUI ON) +endif() + set(BUILD_TESTING OFF) set(BUILD_PROGRAMS OFF) set(BUILD_EXAMPLES OFF) @@ -14,9 +20,16 @@ if (WIN32) add_subdirectory(extern/zlib) set(HAVE_SDL2 SDL2-static) set(HAVE_Z zlibstatic) - include_directories(extern/zlib ${CMAKE_CURRENT_BINARY_DIR}/extern/zlib) + include_directories(extern/imgui extern/zlib ${CMAKE_CURRENT_BINARY_DIR}/extern/zlib) else() - find_library(HAVE_SDL2 SDL2) + if (BUILD_GUI) + set(SDL_SHARED ON) + add_subdirectory(extern/SDL) + include_directories(extern/SDL/include extern/imgui) + set(HAVE_SDL2 SDL2) + else() + find_library(HAVE_SDL2 SDL2) + endif() if (NOT APPLE) find_library(HAVE_JACK jack) endif() @@ -85,17 +98,23 @@ src/engine/platform/arcade.cpp src/engine/platform/ym2610.cpp src/engine/platform/dummy.cpp) -#imgui/imgui.cpp -#imgui/imgui_demo.cpp -#imgui/imgui_draw.cpp -#imgui/imgui_tables.cpp -#imgui/imgui_widgets.cpp -#imgui/backends/imgui_impl_opengl3.cpp -#imgui/backends/imgui_impl_sdl.cpp -#src/gui/main.cpp) +set(GUI_SOURCES +extern/imgui/imgui.cpp +extern/imgui/imgui_demo.cpp +extern/imgui/imgui_draw.cpp +extern/imgui/imgui_tables.cpp +extern/imgui/imgui_widgets.cpp +extern/imgui/backends/imgui_impl_sdlrenderer.cpp +extern/imgui/backends/imgui_impl_sdl.cpp +extern/igfd/ImGuiFileDialog.cpp -add_executable(furnace ${ENGINE_SOURCES} ${AUDIO_SOURCES} -src/main.cpp) +src/gui/gui.cpp) + +if (BUILD_GUI) + add_executable(furnace ${ENGINE_SOURCES} ${AUDIO_SOURCES} ${GUI_SOURCES} src/main.cpp) +else() + add_executable(furnace ${ENGINE_SOURCES} ${AUDIO_SOURCES} src/main.cpp) +endif() target_link_libraries(furnace ${HAVE_SDL2} ${HAVE_Z} sndfile) diff --git a/extern/igfd/ImGuiFileDialog.cpp b/extern/igfd/ImGuiFileDialog.cpp new file mode 100644 index 00000000..63b8290a --- /dev/null +++ b/extern/igfd/ImGuiFileDialog.cpp @@ -0,0 +1,5059 @@ +// This is an independent project of an individual developer. Dear PVS-Studio, please check it. +// PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + +/* +MIT License + +Copyright (c) 2019-2020 Stephane Cuillerdier (aka aiekick) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +*/ + +#include "ImGuiFileDialog.h" + +#ifdef __cplusplus + +#include +#include // stricmp / strcasecmp +#include // variadic +#include +#include +#include +#include +#include +// this option need c++17 +#ifdef USE_STD_FILESYSTEM + #include +#endif +#if defined (__EMSCRIPTEN__) // EMSCRIPTEN + #include +#endif // EMSCRIPTEN +#if defined(__WIN32__) || defined(_WIN32) + #ifndef WIN32 + #define WIN32 + #endif // WIN32 + #define stat _stat + #define stricmp _stricmp + #include + // this option need c++17 + #ifdef USE_STD_FILESYSTEM + #include + #else + #include "dirent/dirent.h" // directly open the dirent file attached to this lib + #endif // USE_STD_FILESYSTEM + #define PATH_SEP '\\' + #ifndef PATH_MAX + #define PATH_MAX 260 + #endif // PATH_MAX +#elif defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) || defined (__EMSCRIPTEN__) + #define UNIX + #define stricmp strcasecmp + #include + // this option need c++17 + #ifndef USE_STD_FILESYSTEM + #include + #endif // USE_STD_FILESYSTEM + #define PATH_SEP '/' +#endif // defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) + +#include "imgui.h" +#ifndef IMGUI_DEFINE_MATH_OPERATORS + #define IMGUI_DEFINE_MATH_OPERATORS +#endif // IMGUI_DEFINE_MATH_OPERATORS +#include "imgui_internal.h" + +#include +#include +#include + +#ifdef USE_THUMBNAILS +#ifndef DONT_DEFINE_AGAIN__STB_IMAGE_IMPLEMENTATION +#ifndef STB_IMAGE_IMPLEMENTATION +#define STB_IMAGE_IMPLEMENTATION +#endif // STB_IMAGE_IMPLEMENTATION +#endif // DONT_DEFINE_AGAIN__STB_IMAGE_IMPLEMENTATION +#include "stb/stb_image.h" +#ifndef DONT_DEFINE_AGAIN__STB_IMAGE_RESIZE_IMPLEMENTATION +#ifndef STB_IMAGE_RESIZE_IMPLEMENTATION +#define STB_IMAGE_RESIZE_IMPLEMENTATION +#endif // STB_IMAGE_RESIZE_IMPLEMENTATION +#endif // DONT_DEFINE_AGAIN__STB_IMAGE_RESIZE_IMPLEMENTATION +#include "stb/stb_image_resize.h" +#endif // USE_THUMBNAILS + +namespace IGFD +{ +// float comparisons +#ifndef IS_FLOAT_DIFFERENT +#define IS_FLOAT_DIFFERENT(a,b) (fabs((a) - (b)) > FLT_EPSILON) +#endif // IS_FLOAT_DIFFERENT +#ifndef IS_FLOAT_EQUAL +#define IS_FLOAT_EQUAL(a,b) (fabs((a) - (b)) < FLT_EPSILON) +#endif // IS_FLOAT_EQUAL +// width of filter combobox +#ifndef FILTER_COMBO_WIDTH +#define FILTER_COMBO_WIDTH 150.0f +#endif // FILTER_COMBO_WIDTH +// for lets you define your button widget +// if you have like me a special bi-color button +#ifndef IMGUI_PATH_BUTTON +#define IMGUI_PATH_BUTTON ImGui::Button +#endif // IMGUI_PATH_BUTTON +#ifndef IMGUI_BUTTON +#define IMGUI_BUTTON ImGui::Button +#endif // IMGUI_BUTTON +// locales +#ifndef createDirButtonString +#define createDirButtonString "+" +#endif // createDirButtonString +#ifndef okButtonString +#define okButtonString "OK" +#endif // okButtonString +#ifndef cancelButtonString +#define cancelButtonString "Cancel" +#endif // cancelButtonString +#ifndef resetButtonString +#define resetButtonString "R" +#endif // resetButtonString +#ifndef drivesButtonString +#define drivesButtonString "Drives" +#endif // drivesButtonString +#ifndef editPathButtonString +#define editPathButtonString "E" +#endif // editPathButtonString +#ifndef searchString +#define searchString "Search" +#endif // searchString +#ifndef dirEntryString +#define dirEntryString "[Dir]" +#endif // dirEntryString +#ifndef linkEntryString +#define linkEntryString "[Link]" +#endif // linkEntryString +#ifndef fileEntryString +#define fileEntryString "[File]" +#endif // fileEntryString +#ifndef fileNameString +#define fileNameString "File Name:" +#endif // fileNameString +#ifndef dirNameString +#define dirNameString "Directory Path:" +#endif // dirNameString +#ifndef buttonResetSearchString +#define buttonResetSearchString "Reset search" +#endif // buttonResetSearchString +#ifndef buttonDriveString +#define buttonDriveString "Drives" +#endif // buttonDriveString +#ifndef buttonEditPathString +#define buttonEditPathString "Edit path\nYou can also right click on path buttons" +#endif // buttonEditPathString +#ifndef buttonResetPathString +#define buttonResetPathString "Reset to current directory" +#endif // buttonResetPathString +#ifndef buttonCreateDirString +#define buttonCreateDirString "Create Directory" +#endif // buttonCreateDirString +#ifndef tableHeaderAscendingIcon +#define tableHeaderAscendingIcon "A|" +#endif // tableHeaderAscendingIcon +#ifndef tableHeaderDescendingIcon +#define tableHeaderDescendingIcon "D|" +#endif // tableHeaderDescendingIcon +#ifndef tableHeaderFileNameString +#define tableHeaderFileNameString "File name" +#endif // tableHeaderFileNameString +#ifndef tableHeaderFileTypeString +#define tableHeaderFileTypeString "Type" +#endif // tableHeaderFileTypeString +#ifndef tableHeaderFileSizeString +#define tableHeaderFileSizeString "Size" +#endif // tableHeaderFileSizeString +#ifndef tableHeaderFileDateString +#define tableHeaderFileDateString "Date" +#endif // tableHeaderFileDateString +#ifndef OverWriteDialogTitleString +#define OverWriteDialogTitleString "Warning" +#endif // OverWriteDialogTitleString +#ifndef OverWriteDialogMessageString +#define OverWriteDialogMessageString "The file you selected already exists? Would you like to overwrite it?" +#endif // OverWriteDialogMessageString +#ifndef OverWriteDialogConfirmButtonString +#define OverWriteDialogConfirmButtonString "Yes" +#endif // OverWriteDialogConfirmButtonString +#ifndef OverWriteDialogCancelButtonString +#define OverWriteDialogCancelButtonString "No" +#endif // OverWriteDialogCancelButtonString +// see strftime functionin for customize +#ifndef DateTimeFormat +#define DateTimeFormat "%Y/%m/%d %H:%M" +#endif // DateTimeFormat +#ifdef USE_THUMBNAILS +#ifndef tableHeaderFileThumbnailsString +#define tableHeaderFileThumbnailsString "Thumbnails" +#endif // tableHeaderFileThumbnailsString +#ifndef DisplayMode_FilesList_ButtonString +#define DisplayMode_FilesList_ButtonString "FL" +#endif // DisplayMode_FilesList_ButtonString +#ifndef DisplayMode_FilesList_ButtonHelp +#define DisplayMode_FilesList_ButtonHelp "File List" +#endif // DisplayMode_FilesList_ButtonHelp +#ifndef DisplayMode_ThumbailsList_ButtonString +#define DisplayMode_ThumbailsList_ButtonString "TL" +#endif // DisplayMode_ThumbailsList_ButtonString +#ifndef DisplayMode_ThumbailsList_ButtonHelp +#define DisplayMode_ThumbailsList_ButtonHelp "Thumbnails List" +#endif // DisplayMode_ThumbailsList_ButtonHelp +#ifndef DisplayMode_ThumbailsGrid_ButtonString +#define DisplayMode_ThumbailsGrid_ButtonString "TG" +#endif // DisplayMode_ThumbailsGrid_ButtonString +#ifndef DisplayMode_ThumbailsGrid_ButtonHelp +#define DisplayMode_ThumbailsGrid_ButtonHelp "Thumbnails Grid" +#endif // DisplayMode_ThumbailsGrid_ButtonHelp +#ifndef DisplayMode_ThumbailsList_ImageHeight +#define DisplayMode_ThumbailsList_ImageHeight 32.0f +#endif // DisplayMode_ThumbailsList_ImageHeight +#ifndef IMGUI_RADIO_BUTTON + inline bool inRadioButton(const char* vLabel, bool vToggled) + { + bool pressed = false; + + if (vToggled) + { + ImVec4 bua = ImGui::GetStyleColorVec4(ImGuiCol_ButtonActive); + ImVec4 te = ImGui::GetStyleColorVec4(ImGuiCol_Text); + ImGui::PushStyleColor(ImGuiCol_Button, te); + ImGui::PushStyleColor(ImGuiCol_ButtonActive, te); + ImGui::PushStyleColor(ImGuiCol_ButtonHovered, te); + ImGui::PushStyleColor(ImGuiCol_Text, bua); + } + + pressed = IMGUI_BUTTON(vLabel); + + if (vToggled) + { + ImGui::PopStyleColor(4); //-V112 + } + + return pressed; + } +#define IMGUI_RADIO_BUTTON inRadioButton +#endif // IMGUI_RADIO_BUTTON +#endif // USE_THUMBNAILS +#ifdef USE_BOOKMARK +#ifndef defaultBookmarkPaneWith +#define defaultBookmarkPaneWith 150.0f +#endif // defaultBookmarkPaneWith +#ifndef bookmarksButtonString +#define bookmarksButtonString "Bookmark" +#endif // bookmarksButtonString +#ifndef bookmarksButtonHelpString +#define bookmarksButtonHelpString "Bookmark" +#endif // bookmarksButtonHelpString +#ifndef addBookmarkButtonString +#define addBookmarkButtonString "+" +#endif // addBookmarkButtonString +#ifndef removeBookmarkButtonString +#define removeBookmarkButtonString "-" +#endif // removeBookmarkButtonString +#ifndef IMGUI_TOGGLE_BUTTON + inline bool inToggleButton(const char* vLabel, bool* vToggled) + { + bool pressed = false; + + if (vToggled && *vToggled) + { + ImVec4 bua = ImGui::GetStyleColorVec4(ImGuiCol_ButtonActive); + //ImVec4 buh = ImGui::GetStyleColorVec4(ImGuiCol_ButtonHovered); + //ImVec4 bu = ImGui::GetStyleColorVec4(ImGuiCol_Button); + ImVec4 te = ImGui::GetStyleColorVec4(ImGuiCol_Text); + ImGui::PushStyleColor(ImGuiCol_Button, te); + ImGui::PushStyleColor(ImGuiCol_ButtonActive, te); + ImGui::PushStyleColor(ImGuiCol_ButtonHovered, te); + ImGui::PushStyleColor(ImGuiCol_Text, bua); + } + + pressed = IMGUI_BUTTON(vLabel); + + if (vToggled && *vToggled) + { + ImGui::PopStyleColor(4); //-V112 + } + + if (vToggled && pressed) + *vToggled = !*vToggled; + + return pressed; + } +#define IMGUI_TOGGLE_BUTTON inToggleButton +#endif // IMGUI_TOGGLE_BUTTON +#endif // USE_BOOKMARK + + ///////////////////////////////////////////////////////////////////////////////////// + //// INLINE FUNCTIONS /////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + +#ifndef USE_STD_FILESYSTEM + inline int inAlphaSort(const struct dirent** a, const struct dirent** b) + { + return strcoll((*a)->d_name, (*b)->d_name); + } +#endif + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILE EXTENTIONS INFOS ////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + IGFD::FileStyle::FileStyle() + : color(0, 0, 0, 0) + { + + } + + IGFD::FileStyle::FileStyle(const FileStyle& vStyle) + { + color = vStyle.color; + icon = vStyle.icon; + font = vStyle.font; + flags = vStyle.flags; + } + + IGFD::FileStyle::FileStyle(const ImVec4& vColor, const std::string& vIcon, ImFont* vFont) + : color(vColor), icon(vIcon), font(vFont) + { + + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILE INFOS ///////////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + // https://github.com/ocornut/imgui/issues/1720 + bool IGFD::Utils::Splitter(bool split_vertically, float thickness, float* size1, float* size2, float min_size1, float min_size2, float splitter_long_axis_size) + { + using namespace ImGui; + ImGuiContext& g = *GImGui; + ImGuiWindow* window = g.CurrentWindow; + ImGuiID id = window->GetID("##Splitter"); + ImRect bb; + bb.Min = window->DC.CursorPos + (split_vertically ? ImVec2(*size1, 0.0f) : ImVec2(0.0f, *size1)); + bb.Max = bb.Min + CalcItemSize(split_vertically ? ImVec2(thickness, splitter_long_axis_size) : ImVec2(splitter_long_axis_size, thickness), 0.0f, 0.0f); + return SplitterBehavior(bb, id, split_vertically ? ImGuiAxis_X : ImGuiAxis_Y, size1, size2, min_size1, min_size2, 1.0f); + } + +#ifdef WIN32 + bool IGFD::Utils::WReplaceString(std::wstring& str, const std::wstring& oldStr, const std::wstring& newStr) + { + bool found = false; + size_t pos = 0; + while ((pos = str.find(oldStr, pos)) != std::wstring::npos) + { + found = true; + str.replace(pos, oldStr.length(), newStr); + pos += newStr.length(); + } + return found; + } + + std::vector IGFD::Utils::WSplitStringToVector(const std::wstring& text, char delimiter, bool pushEmpty) + { + std::vector arr; + if (!text.empty()) + { + std::wstring::size_type start = 0; + std::wstring::size_type end = text.find(delimiter, start); + while (end != std::wstring::npos) + { + std::wstring token = text.substr(start, end - start); + if (!token.empty() || (token.empty() && pushEmpty)) //-V728 + arr.push_back(token); + start = end + 1; + end = text.find(delimiter, start); + } + std::wstring token = text.substr(start); + if (!token.empty() || (token.empty() && pushEmpty)) //-V728 + arr.push_back(token); + } + return arr; + } + + std::wstring IGFD::Utils::string_to_wstring(const std::string& str) + { + std::wstring ret; + if (!str.empty()) + { + size_t sz = std::mbstowcs(nullptr, str.c_str(), str.size()); + if (sz) + { + ret.resize(sz); + std::mbstowcs((wchar_t*)ret.data(), str.c_str(), sz); + } + } + return ret; + } + + std::string IGFD::Utils::wstring_to_string(const std::wstring& str) + { + std::string ret; + if (!str.empty()) + { + size_t sz = std::wcstombs(nullptr, str.c_str(), str.size()); + if (sz) + { + ret.resize(sz); + std::wcstombs((char*)ret.data(), str.c_str(), sz); + } + } + return ret; + } +#endif // WIN32 + + bool IGFD::Utils::ReplaceString(std::string& str, const std::string& oldStr, const std::string& newStr) + { + bool found = false; + size_t pos = 0; + while ((pos = str.find(oldStr, pos)) != std::string::npos) + { + found = true; + str.replace(pos, oldStr.length(), newStr); + pos += newStr.length(); + } + return found; + } + + std::vector IGFD::Utils::SplitStringToVector(const std::string& text, char delimiter, bool pushEmpty) + { + std::vector arr; + if (!text.empty()) + { + size_t start = 0; + size_t end = text.find(delimiter, start); + while (end != std::string::npos) + { + auto token = text.substr(start, end - start); + if (!token.empty() || (token.empty() && pushEmpty)) //-V728 + arr.push_back(token); + start = end + 1; + end = text.find(delimiter, start); + } + auto token = text.substr(start); + if (!token.empty() || (token.empty() && pushEmpty)) //-V728 + arr.push_back(token); + } + return arr; + } + + std::vector IGFD::Utils::GetDrivesList() + { + std::vector res; + +#ifdef WIN32 + const DWORD mydrives = 2048; + char lpBuffer[2048]; +#define mini(a,b) (((a) < (b)) ? (a) : (b)) + const DWORD countChars = mini(GetLogicalDriveStringsA(mydrives, lpBuffer), 2047); +#undef mini + if (countChars > 0) + { + std::string var = std::string(lpBuffer, (size_t)countChars); + IGFD::Utils::ReplaceString(var, "\\", ""); + res = IGFD::Utils::SplitStringToVector(var, '\0', false); + } +#endif // WIN32 + + return res; + } + + bool IGFD::Utils::IsDirectoryExist(const std::string& name) + { + bool bExists = false; + + if (!name.empty()) + { +#ifdef USE_STD_FILESYSTEM + namespace fs = std::filesystem; +#ifdef WIN32 + std::wstring wname = IGFD::Utils::string_to_wstring(name.c_str()); + fs::path pathName = fs::path(wname); +#else + fs::path pathName = fs::path(name); +#endif + bExists = fs::is_directory(pathName); +#else + DIR* pDir = nullptr; + pDir = opendir(name.c_str()); + if (pDir != nullptr) + { + bExists = true; + (void)closedir(pDir); + } +#endif // USE_STD_FILESYSTEM + } + + return bExists; // this is not a directory! + } + + bool IGFD::Utils::CreateDirectoryIfNotExist(const std::string& name) + { + bool res = false; + + if (!name.empty()) + { + if (!IsDirectoryExist(name)) + { +#ifdef WIN32 +#ifdef USE_STD_FILESYSTEM + namespace fs = std::filesystem; + std::wstring wname = IGFD::Utils::string_to_wstring(name.c_str()); + fs::path pathName = fs::path(wname); + res = fs::create_directory(pathName); +#else + std::wstring wname = IGFD::Utils::string_to_wstring(name); + if (CreateDirectoryW(wname.c_str(), nullptr)) + { + res = true; + } +#endif // USE_STD_FILESYSTEM +#elif defined(__EMSCRIPTEN__) + std::string str = std::string("FS.mkdir('") + name + "');"; + emscripten_run_script(str.c_str()); + res = true; +#elif defined(UNIX) + char buffer[PATH_MAX] = {}; + snprintf(buffer, PATH_MAX, "mkdir -p %s", name.c_str()); + const int dir_err = std::system(buffer); + if (dir_err != -1) + { + res = true; + } +#endif // WIN32 + if (!res) { + std::cout << "Error creating directory " << name << std::endl; + } + } + } + + return res; + } + +#ifdef USE_STD_FILESYSTEM + // https://github.com/aiekick/ImGuiFileDialog/issues/54 + IGFD::Utils::PathStruct IGFD::Utils::ParsePathFileName(const std::string& vPathFileName) + { + namespace fs = std::filesystem; + PathStruct res; + if (vPathFileName.empty()) + return res; + + auto fsPath = fs::path(vPathFileName); + + if (fs::is_regular_file(fsPath)) { + res.name = fsPath.string(); + res.path = fsPath.parent_path().string(); + res.isOk = true; + } + + return res; + } +#else + IGFD::Utils::PathStruct IGFD::Utils::ParsePathFileName(const std::string& vPathFileName) + { + PathStruct res; + + if (!vPathFileName.empty()) + { + std::string pfn = vPathFileName; + std::string separator(1u, PATH_SEP); + IGFD::Utils::ReplaceString(pfn, "\\", separator); + IGFD::Utils::ReplaceString(pfn, "/", separator); + + size_t lastSlash = pfn.find_last_of(separator); + if (lastSlash != std::string::npos) + { + res.name = pfn.substr(lastSlash + 1); + res.path = pfn.substr(0, lastSlash); + res.isOk = true; + } + + size_t lastPoint = pfn.find_last_of('.'); + if (lastPoint != std::string::npos) + { + if (!res.isOk) + { + res.name = pfn; + res.isOk = true; + } + res.ext = pfn.substr(lastPoint + 1); + IGFD::Utils::ReplaceString(res.name, "." + res.ext, ""); + } + + if (!res.isOk) + { + res.name = std::move(pfn); + res.isOk = true; + } + } + + return res; + } +#endif // USE_STD_FILESYSTEM + void IGFD::Utils::AppendToBuffer(char* vBuffer, size_t vBufferLen, const std::string& vStr) + { + std::string st = vStr; + size_t len = vBufferLen - 1u; + size_t slen = strlen(vBuffer); + + if (!st.empty() && st != "\n") + { + IGFD::Utils::ReplaceString(st, "\n", ""); + IGFD::Utils::ReplaceString(st, "\r", ""); + } + vBuffer[slen] = '\0'; + std::string str = std::string(vBuffer); + //if (!str.empty()) str += "\n"; + str += vStr; + if (len > str.size()) len = str.size(); +#ifdef MSVC + strncpy_s(vBuffer, vBufferLen, str.c_str(), len); +#else // MSVC + strncpy(vBuffer, str.c_str(), len); +#endif // MSVC + vBuffer[len] = '\0'; + } + + void IGFD::Utils::ResetBuffer(char* vBuffer) + { + vBuffer[0] = '\0'; + } + + void IGFD::Utils::SetBuffer(char* vBuffer, size_t vBufferLen, const std::string& vStr) + { + ResetBuffer(vBuffer); + AppendToBuffer(vBuffer, vBufferLen, vStr); + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILE INFOS ///////////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + bool IGFD::FileInfos::IsTagFound(const std::string& vTag) const + { + if (!vTag.empty()) + { + if (fileNameExt_optimized == "..") return true; + + return + fileNameExt_optimized.find(vTag) != std::string::npos || // first try wihtout case and accents + fileNameExt.find(vTag) != std::string::npos; // second if searched with case and accents + } + + // if tag is empty => its a special case but all is found + return true; + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// SEARCH MANAGER ///////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + void IGFD::SearchManager::Clear() + { + puSearchTag.clear(); + IGFD::Utils::ResetBuffer(puSearchBuffer); + } + + void IGFD::SearchManager::DrawSearchBar(FileDialogInternal& vFileDialogInternal) + { + // search field + if (IMGUI_BUTTON(resetButtonString "##BtnImGuiFileDialogSearchField")) + { + Clear(); + vFileDialogInternal.puFileManager.ApplyFilteringOnFileList(vFileDialogInternal); + } + if (ImGui::IsItemHovered()) + ImGui::SetTooltip(buttonResetSearchString); + ImGui::SameLine(); + ImGui::Text(searchString); + ImGui::SameLine(); + ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x); + bool edited = ImGui::InputText("##InputImGuiFileDialogSearchField", puSearchBuffer, MAX_FILE_DIALOG_NAME_BUFFER); + if (ImGui::GetItemID() == ImGui::GetActiveID()) + puSearchInputIsActive = true; + ImGui::PopItemWidth(); + if (edited) + { + puSearchTag = puSearchBuffer; + vFileDialogInternal.puFileManager.ApplyFilteringOnFileList(vFileDialogInternal); + } + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILTER INFOS /////////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + void IGFD::FilterManager::FilterInfos::clear() + { + filter.clear(); + collectionfilters.clear(); + } + + bool IGFD::FilterManager::FilterInfos::empty() const + { + return filter.empty() && collectionfilters.empty(); + } + + bool IGFD::FilterManager::FilterInfos::exist(const std::string& vFilter) const + { + return filter == vFilter || (collectionfilters.find(vFilter) != collectionfilters.end()); + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILTER MANAGER ///////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + void IGFD::FilterManager::ParseFilters(const char* vFilters) + { + prParsedFilters.clear(); + + if (vFilters) + puDLGFilters = vFilters; // file mode + else + puDLGFilters.clear(); // directory mode + + if (!puDLGFilters.empty()) + { + // ".*,.cpp,.h,.hpp" + // "Source files{.cpp,.h,.hpp},Image files{.png,.gif,.jpg,.jpeg},.md" + + bool currentFilterFound = false; + + size_t nan = std::string::npos; + size_t p = 0, lp = 0; + while ((p = puDLGFilters.find_first_of("{,", p)) != nan) + { + FilterInfos infos; + + if (puDLGFilters[p] == '{') // { + { + infos.filter = puDLGFilters.substr(lp, p - lp); + p++; + lp = puDLGFilters.find('}', p); + if (lp != nan) + { + std::string fs = puDLGFilters.substr(p, lp - p); + auto arr = IGFD::Utils::SplitStringToVector(fs, ',', false); + for (auto a : arr) + { + infos.collectionfilters.emplace(a); + } + } + p = lp + 1; + } + else // , + { + infos.filter = puDLGFilters.substr(lp, p - lp); + p++; + } + + if (!currentFilterFound && prSelectedFilter.filter == infos.filter) + { + currentFilterFound = true; + prSelectedFilter = infos; + } + + lp = p; + if (!infos.empty()) + prParsedFilters.emplace_back(infos); + } + + std::string token = puDLGFilters.substr(lp); + if (!token.empty()) + { + FilterInfos infos; + infos.filter = std::move(token); + prParsedFilters.emplace_back(infos); + } + + if (!currentFilterFound) + if (!prParsedFilters.empty()) + prSelectedFilter = *prParsedFilters.begin(); + } + } + + void IGFD::FilterManager::SetSelectedFilterWithExt(const std::string& vFilter) + { + if (!prParsedFilters.empty()) + { + if (!vFilter.empty()) + { + // std::map + for (const auto& infos : prParsedFilters) + { + if (vFilter == infos.filter) + { + prSelectedFilter = infos; + } + else + { + // maybe this ext is in an extention so we will + // explore the collections is they are existing + for (const auto& filter : infos.collectionfilters) + { + if (vFilter == filter) + { + prSelectedFilter = infos; + } + } + } + } + } + + if (prSelectedFilter.empty()) + prSelectedFilter = *prParsedFilters.begin(); + } + } + + void IGFD::FilterManager::SetFileStyle(const IGFD_FileStyleFlags& vFlags, const char* vCriteria, const FileStyle& vInfos) + { + std::string _criteria; + if (vCriteria) + _criteria = std::string(vCriteria); + prFilesStyle[vFlags][_criteria] = std::make_shared(vInfos); + prFilesStyle[vFlags][_criteria]->flags = vFlags; + } + + // will be called internally + // will not been exposed to IGFD API + bool IGFD::FilterManager::prFillFileStyle(std::shared_ptr vFileInfos) const + { + if (vFileInfos.use_count() && !prFilesStyle.empty()) + { + for (const auto& _flag : prFilesStyle) + { + for (const auto& _file : _flag.second) + { + if (_flag.first & IGFD_FileStyleByTypeDir && vFileInfos->fileType == 'd') + { + if (_file.first.empty()) // for all dirs + { + vFileInfos->fileStyle = _file.second; + } + else if (_file.first == vFileInfos->fileNameExt) // for dirs who are equal to style criteria + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeFile && vFileInfos->fileType == 'f') + { + if (_file.first.empty()) // for all files + { + vFileInfos->fileStyle = _file.second; + } + else if (_file.first == vFileInfos->fileNameExt) // for files who are equal to style criteria + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeLink && vFileInfos->fileType == 'l') + { + if (_file.first.empty()) // for all links + { + vFileInfos->fileStyle = _file.second; + } + else if (_file.first == vFileInfos->fileNameExt) // for links who are equal to style criteria + { + vFileInfos->fileStyle = _file.second; + } + } + + if (_flag.first & IGFD_FileStyleByExtention) + { + if (_file.first == vFileInfos->fileExt) + { + vFileInfos->fileStyle = _file.second; + } + + // can make sense for some dirs like the hidden by ex ".git" + if (_flag.first & IGFD_FileStyleByTypeDir && vFileInfos->fileType == 'd') + { + if (_file.first == vFileInfos->fileExt) + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeFile && vFileInfos->fileType == 'f') + { + if (_file.first == vFileInfos->fileExt) + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeLink && vFileInfos->fileType == 'l') + { + if (_file.first == vFileInfos->fileExt) + { + vFileInfos->fileStyle = _file.second; + } + } + } + if (_flag.first & IGFD_FileStyleByFullName) + { + if (_file.first == vFileInfos->fileNameExt) + { + vFileInfos->fileStyle = _file.second; + } + + if (_flag.first & IGFD_FileStyleByTypeDir && vFileInfos->fileType == 'd') + { + if (_file.first == vFileInfos->fileNameExt) + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeFile && vFileInfos->fileType == 'f') + { + if (_file.first == vFileInfos->fileNameExt) + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeLink && vFileInfos->fileType == 'l') + { + if (_file.first == vFileInfos->fileNameExt) + { + vFileInfos->fileStyle = _file.second; + } + } + } + if (_flag.first & IGFD_FileStyleByContainedInFullName) + { + if (vFileInfos->fileNameExt.find(_file.first) != std::string::npos) + { + vFileInfos->fileStyle = _file.second; + } + + if (_flag.first & IGFD_FileStyleByTypeDir && vFileInfos->fileType == 'd') + { + if (vFileInfos->fileNameExt.find(_file.first) != std::string::npos) + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeFile && vFileInfos->fileType == 'f') + { + if (vFileInfos->fileNameExt.find(_file.first) != std::string::npos) + { + vFileInfos->fileStyle = _file.second; + } + } + else if (_flag.first & IGFD_FileStyleByTypeLink && vFileInfos->fileType == 'l') + { + if (vFileInfos->fileNameExt.find(_file.first) != std::string::npos) + { + vFileInfos->fileStyle = _file.second; + } + } + } + + if (vFileInfos->fileStyle.use_count()) + return true; + } + } + } + + return false; + } + + void IGFD::FilterManager::SetFileStyle(const IGFD_FileStyleFlags& vFlags, const char* vCriteria, const ImVec4& vColor, const std::string& vIcon, ImFont* vFont) + { + std::string _criteria; + if (vCriteria) + _criteria = std::string(vCriteria); + prFilesStyle[vFlags][_criteria] = std::make_shared(vColor, vIcon, vFont); + prFilesStyle[vFlags][_criteria]->flags = vFlags; + } + + // todo : to refactor this fucking function + bool IGFD::FilterManager::GetFileStyle(const IGFD_FileStyleFlags& vFlags, const std::string& vCriteria, ImVec4* vOutColor, std::string* vOutIcon, ImFont **vOutFont) + { + if (vOutColor) + { + if (!prFilesStyle.empty()) + { + if (prFilesStyle.find(vFlags) != prFilesStyle.end()) // found + { + if (vFlags & IGFD_FileStyleByContainedInFullName) + { + // search for vCriteria who are containing the criteria + for (const auto& _file : prFilesStyle.at(vFlags)) + { + if (vCriteria.find(_file.first) != std::string::npos) + { + if (_file.second.use_count()) + { + *vOutColor = _file.second->color; + if (vOutIcon) + *vOutIcon = _file.second->icon; + if (vOutFont) + *vOutFont = _file.second->font; + return true; + } + } + } + } + else + { + if (prFilesStyle.at(vFlags).find(vCriteria) != prFilesStyle.at(vFlags).end()) // found + { + *vOutColor = prFilesStyle[vFlags][vCriteria]->color; + if (vOutIcon) + *vOutIcon = prFilesStyle[vFlags][vCriteria]->icon; + if (vOutFont) + *vOutFont = prFilesStyle[vFlags][vCriteria]->font; + return true; + } + } + } + else + { + // search for flag composition + for (const auto& _flag : prFilesStyle) + { + if (_flag.first & vFlags) + { + if (_flag.first & IGFD_FileStyleByContainedInFullName) + { + // search for vCriteria who are containing the criteria + for (const auto& _file : prFilesStyle.at(_flag.first)) + { + if (vCriteria.find(_file.first) != std::string::npos) + { + if (_file.second.use_count()) + { + *vOutColor = _file.second->color; + if (vOutIcon) + *vOutIcon = _file.second->icon; + if (vOutFont) + *vOutFont = _file.second->font; + return true; + } + } + } + } + else + { + if (prFilesStyle.at(_flag.first).find(vCriteria) != prFilesStyle.at(_flag.first).end()) // found + { + *vOutColor = prFilesStyle[_flag.first][vCriteria]->color; + if (vOutIcon) + *vOutIcon = prFilesStyle[_flag.first][vCriteria]->icon; + if (vOutFont) + *vOutFont = prFilesStyle[_flag.first][vCriteria]->font; + return true; + } + } + } + } + } + } + } + return false; + } + + void IGFD::FilterManager::ClearFilesStyle() + { + prFilesStyle.clear(); + } + + bool IGFD::FilterManager::IsCoveredByFilters(const std::string& vTag) const + { + if (!puDLGFilters.empty() && !prSelectedFilter.empty()) + { + // check if current file extention is covered by current filter + // we do that here, for avoid doing that during filelist display + // for better fps + if (prSelectedFilter.exist(vTag) || prSelectedFilter.filter == ".*") + { + return true; + } + } + + return false; + } + + bool IGFD::FilterManager::DrawFilterComboBox(FileDialogInternal& vFileDialogInternal) + { + // combobox of filters + if (!puDLGFilters.empty()) + { + ImGui::SameLine(); + + bool needToApllyNewFilter = false; + + ImGui::PushItemWidth(FILTER_COMBO_WIDTH); + if (ImGui::BeginCombo("##Filters", prSelectedFilter.filter.c_str(), ImGuiComboFlags_None)) + { + intptr_t i = 0; + for (const auto& filter : prParsedFilters) + { + const bool item_selected = (filter.filter == prSelectedFilter.filter); + ImGui::PushID((void*)(intptr_t)i++); + if (ImGui::Selectable(filter.filter.c_str(), item_selected)) + { + prSelectedFilter = filter; + needToApllyNewFilter = true; + } + ImGui::PopID(); + } + + ImGui::EndCombo(); + } + ImGui::PopItemWidth(); + + if (needToApllyNewFilter) + { + vFileDialogInternal.puFileManager.OpenCurrentPath(vFileDialogInternal); + } + + return needToApllyNewFilter; + } + + return false; + } + + IGFD::FilterManager::FilterInfos IGFD::FilterManager::GetSelectedFilter() + { + return prSelectedFilter; + } + + std::string IGFD::FilterManager::ReplaceExtentionWithCurrentFilter(const std::string& vFile) const + { + auto result = vFile; + + if (!result.empty()) + { + // if not a collection we can replace the filter by the extention we want + if (prSelectedFilter.collectionfilters.empty()) + { + size_t lastPoint = vFile.find_last_of('.'); + if (lastPoint != std::string::npos) + { + result = result.substr(0, lastPoint); + } + + result += prSelectedFilter.filter; + } + } + + return result; + } + + void IGFD::FilterManager::SetDefaultFilterIfNotDefined() + { + if (prSelectedFilter.empty() && // no filter selected + !prParsedFilters.empty()) // filter exist + prSelectedFilter = *prParsedFilters.begin(); // we take the first filter + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILE MANAGER /////////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + IGFD::FileManager::FileManager() + { + puFsRoot = std::string(1u, PATH_SEP); + puSortingDirection[0]=false; + puSortingDirection[1]=false; + puSortingDirection[2]=false; + puSortingDirection[3]=false; + } + + void IGFD::FileManager::OpenCurrentPath(const FileDialogInternal& vFileDialogInternal) + { + puShowDrives = false; + ClearComposer(); + ClearFileLists(); + if (puDLGDirectoryMode) // directory mode + SetDefaultFileName("."); + else + SetDefaultFileName(puDLGDefaultFileName); + ScanDir(vFileDialogInternal, GetCurrentPath()); + } + + void IGFD::FileManager::SortFields(const FileDialogInternal& vFileDialogInternal, const SortingFieldEnum& vSortingField, const bool vCanChangeOrder) + { + if (vSortingField != SortingFieldEnum::FIELD_NONE) + { + puHeaderFileName = tableHeaderFileNameString; + puHeaderFileType = tableHeaderFileTypeString; + puHeaderFileSize = tableHeaderFileSizeString; + puHeaderFileDate = tableHeaderFileDateString; +#ifdef USE_THUMBNAILS + puHeaderFileThumbnails = tableHeaderFileThumbnailsString; +#endif // #ifdef USE_THUMBNAILS + } + + if (vSortingField == SortingFieldEnum::FIELD_FILENAME) + { + if (vCanChangeOrder && puSortingField == vSortingField) { + //printf("Change the sorting\n"); + puSortingDirection[0] = true;//!puSortingDirection[0]; + } + + if (puSortingDirection[0]) + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileName = tableHeaderDescendingIcon + puHeaderFileName; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + // this code fail in c:\\Users with the link "All users". got a invalid comparator + /* + // use code from https://github.com/jackm97/ImGuiFileDialog/commit/bf40515f5a1de3043e60562dc1a494ee7ecd3571 + // strict ordering for file/directory types beginning in '.' + // common on Linux platforms + if (a->fileNameExt[0] == '.' && b->fileNameExt[0] != '.') + return false; + if (a->fileNameExt[0] != '.' && b->fileNameExt[0] == '.') + return true; + if (a->fileNameExt[0] == '.' && b->fileNameExt[0] == '.') + { + return (stricmp(a->fileNameExt.c_str(), b->fileNameExt.c_str()) < 0); // sort in insensitive case + } + */ + if (a->fileType != b->fileType) return (a->fileType == 'd'); // directory in first + return (stricmp(a->fileNameExt.c_str(), b->fileNameExt.c_str()) < 0); // sort in insensitive case + }); + } + else + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileName = tableHeaderAscendingIcon + puHeaderFileName; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + // this code fail in c:\\Users with the link "All users". got a invalid comparator + /* + // use code from https://github.com/jackm97/ImGuiFileDialog/commit/bf40515f5a1de3043e60562dc1a494ee7ecd3571 + // strict ordering for file/directory types beginning in '.' + // common on Linux platforms + if (a->fileNameExt[0] == '.' && b->fileNameExt[0] != '.') + return false; + if (a->fileNameExt[0] != '.' && b->fileNameExt[0] == '.') + return true; + if (a->fileNameExt[0] == '.' && b->fileNameExt[0] == '.') + { + return (stricmp(a->fileNameExt.c_str(), b->fileNameExt.c_str()) > 0); // sort in insensitive case + } + */ + return (stricmp(a->fileNameExt.c_str(), b->fileNameExt.c_str()) > 0); // sort in insensitive case + }); + } + } + else if (vSortingField == SortingFieldEnum::FIELD_TYPE) + { + if (vCanChangeOrder && puSortingField == vSortingField) + puSortingDirection[1] = !puSortingDirection[1]; + + if (puSortingDirection[1]) + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileType = tableHeaderDescendingIcon + puHeaderFileType; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType == 'd'); // directory in first + return (a->fileExt < b->fileExt); // else + }); + } + else + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileType = tableHeaderAscendingIcon + puHeaderFileType; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType != 'd'); // directory in last + return (a->fileExt > b->fileExt); // else + }); + } + } + else if (vSortingField == SortingFieldEnum::FIELD_SIZE) + { + if (vCanChangeOrder && puSortingField == vSortingField) + puSortingDirection[2] = !puSortingDirection[2]; + + if (puSortingDirection[2]) + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileSize = tableHeaderDescendingIcon + puHeaderFileSize; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType == 'd'); // directory in first + return (a->fileSize < b->fileSize); // else + }); + } + else + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileSize = tableHeaderAscendingIcon + puHeaderFileSize; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType != 'd'); // directory in last + return (a->fileSize > b->fileSize); // else + }); + } + } + else if (vSortingField == SortingFieldEnum::FIELD_DATE) + { + if (vCanChangeOrder && puSortingField == vSortingField) + puSortingDirection[3] = !puSortingDirection[3]; + + if (puSortingDirection[3]) + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileDate = tableHeaderDescendingIcon + puHeaderFileDate; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType == 'd'); // directory in first + return (a->fileModifDate < b->fileModifDate); // else + }); + } + else + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileDate = tableHeaderAscendingIcon + puHeaderFileDate; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType != 'd'); // directory in last + return (a->fileModifDate > b->fileModifDate); // else + }); + } + } +#ifdef USE_THUMBNAILS + else if (vSortingField == SortingFieldEnum::FIELD_THUMBNAILS) + { + if (vCanChangeOrder && puSortingField == vSortingField) + puSortingDirection[4] = !puSortingDirection[4]; + + // we will compare thumbnails by : + // 1) width + // 2) height + + if (puSortingDirection[4]) + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileThumbnails = tableHeaderDescendingIcon + puHeaderFileThumbnails; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType == 'd'); // directory in first + if (a->thumbnailInfo.textureWidth == b->thumbnailInfo.textureWidth) + return (a->thumbnailInfo.textureHeight < b->thumbnailInfo.textureHeight); + return (a->thumbnailInfo.textureWidth < b->thumbnailInfo.textureWidth); + }); + } + + else + { +#ifdef USE_CUSTOM_SORTING_ICON + puHeaderFileThumbnails = tableHeaderAscendingIcon + puHeaderFileThumbnails; +#endif // USE_CUSTOM_SORTING_ICON + std::sort(prFileList.begin(), prFileList.end(), + [](const std::shared_ptr& a, const std::shared_ptr& b) -> bool + { + if (!a.use_count() || !b.use_count()) + return false; + + if (a->fileType != b->fileType) return (a->fileType != 'd'); // directory in last + if (a->thumbnailInfo.textureWidth == b->thumbnailInfo.textureWidth) + return (a->thumbnailInfo.textureHeight > b->thumbnailInfo.textureHeight); + return (a->thumbnailInfo.textureWidth > b->thumbnailInfo.textureWidth); + }); + } + } +#endif // USE_THUMBNAILS + + if (vSortingField != SortingFieldEnum::FIELD_NONE) + { + puSortingField = vSortingField; + } + + ApplyFilteringOnFileList(vFileDialogInternal); + } + + void IGFD::FileManager::ClearFileLists() + { + prFilteredFileList.clear(); + prFileList.clear(); + } + + std::string IGFD::FileManager::prOptimizeFilenameForSearchOperations(const std::string& vFileNameExt) + { + auto fileNameExt = vFileNameExt; + // convert to lower case + for (char& c : fileNameExt) + c = (char)std::tolower(c); + return fileNameExt; + } + + void IGFD::FileManager::AddFile(const FileDialogInternal& vFileDialogInternal, const std::string& vPath, const std::string& vFileName, const char& vFileType) + { + auto infos = std::make_shared(); + + infos->filePath = vPath; + infos->fileNameExt = vFileName; + infos->fileNameExt_optimized = prOptimizeFilenameForSearchOperations(infos->fileNameExt); + infos->fileType = vFileType; + + if (infos->fileNameExt.empty() || (infos->fileNameExt == "." && !vFileDialogInternal.puFilterManager.puDLGFilters.empty())) return; // filename empty or filename is the current dir '.' //-V807 + if (infos->fileNameExt != ".." && (vFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_DontShowHiddenFiles) && infos->fileNameExt[0] == '.') // dont show hidden files + if (!vFileDialogInternal.puFilterManager.puDLGFilters.empty() || (vFileDialogInternal.puFilterManager.puDLGFilters.empty() && infos->fileNameExt != ".")) // except "." if in directory mode //-V728 + return; + + if (infos->fileType == 'f' || + infos->fileType == 'l') // link can have the same extention of a file + { + size_t lpt = infos->fileNameExt.find_last_of('.'); + if (lpt != std::string::npos) + { + infos->fileExt = infos->fileNameExt.substr(lpt); + } + + if (!vFileDialogInternal.puFilterManager.IsCoveredByFilters(infos->fileExt)) + { + return; + } + } + + vFileDialogInternal.puFilterManager.prFillFileStyle(infos); + + prCompleteFileInfos(infos); + prFileList.push_back(infos); + } + + void IGFD::FileManager::ScanDir(const FileDialogInternal& vFileDialogInternal, const std::string& vPath) + { + std::string path = vPath; + + if (prCurrentPathDecomposition.empty()) + { + SetCurrentDir(path); + } + + if (!prCurrentPathDecomposition.empty()) + { +#ifdef WIN32 + if (path == puFsRoot) + path += std::string(1u, PATH_SEP); +#endif // WIN32 + + ClearFileLists(); + +#ifdef USE_STD_FILESYSTEM + //const auto wpath = IGFD::Utils::WGetString(path.c_str()); + const std::filesystem::path fspath(path); + const auto dir_iter = std::filesystem::directory_iterator(fspath); + AddFile(vFileDialogInternal, path, "..", 'd'); + for (const auto& file : dir_iter) + { + char fileType = 0; + if (file.is_symlink()) + fileType = 'l'; + else if (file.is_directory()) + fileType = 'd'; + else + fileType = 'f'; + auto fileNameExt = file.path().filename().string(); + AddFile(vFileDialogInternal, path, fileNameExt, fileType); + } +#else // dirent + struct dirent** files = nullptr; + size_t n = scandir(path.c_str(), &files, nullptr, inAlphaSort); + if (n) + { + size_t i; + + for (i = 0; i < n; i++) + { + struct dirent* ent = files[i]; + + char fileType = 0; + switch (ent->d_type) + { + case DT_REG: + fileType = 'f'; break; + case DT_DIR: + fileType = 'd'; break; + case DT_LNK: + fileType = 'l'; break; + } + + auto fileNameExt = ent->d_name; + + AddFile(vFileDialogInternal, path, fileNameExt, fileType); + } + + for (i = 0; i < n; i++) + { + free(files[i]); + } + + free(files); + } +#endif // USE_STD_FILESYSTEM + + SortFields(vFileDialogInternal, puSortingField, false); + } + } + + bool IGFD::FileManager::GetDrives() + { + auto drives = IGFD::Utils::GetDrivesList(); + if (!drives.empty()) + { + prCurrentPath.clear(); + prCurrentPathDecomposition.clear(); + ClearFileLists(); + for (auto& drive : drives) + { + auto info = std::make_shared(); + info->fileNameExt = drive; + info->fileNameExt_optimized = prOptimizeFilenameForSearchOperations(drive); + info->fileType = 'd'; + + if (!info->fileNameExt.empty()) + { + prFileList.push_back(info); + } + } + puShowDrives = true; + return true; + } + return false; + } + + bool IGFD::FileManager::IsComposerEmpty() + { + return prCurrentPathDecomposition.empty(); + } + + size_t IGFD::FileManager::GetComposerSize() + { + return prCurrentPathDecomposition.size(); + } + + bool IGFD::FileManager::IsFileListEmpty() + { + return prFileList.empty(); + } + + size_t IGFD::FileManager::GetFullFileListSize() + { + return prFileList.size(); + } + + std::shared_ptr IGFD::FileManager::GetFullFileAt(size_t vIdx) + { + if (vIdx < prFileList.size()) + return prFileList[vIdx]; + return nullptr; + } + + bool IGFD::FileManager::IsFilteredListEmpty() + { + return prFilteredFileList.empty(); + } + + size_t IGFD::FileManager::GetFilteredListSize() + { + return prFilteredFileList.size(); + } + + std::shared_ptr IGFD::FileManager::GetFilteredFileAt(size_t vIdx) + { + if (vIdx < prFilteredFileList.size()) + return prFilteredFileList[vIdx]; + return nullptr; + } + + bool IGFD::FileManager::IsFileNameSelected(const std::string& vFileName) + { + return prSelectedFileNames.find(vFileName) != prSelectedFileNames.end(); + } + + std::string IGFD::FileManager::GetBack() + { + return prCurrentPathDecomposition.back(); + } + + void IGFD::FileManager::ClearComposer() + { + prCurrentPathDecomposition.clear(); + } + + void IGFD::FileManager::ClearAll() + { + ClearComposer(); + ClearFileLists(); + } + + void IGFD::FileManager::ApplyFilteringOnFileList(const FileDialogInternal& vFileDialogInternal) + { + prFilteredFileList.clear(); + for (const auto& file : prFileList) + { + if (!file.use_count()) + continue; + bool show = true; + if (!file->IsTagFound(vFileDialogInternal.puSearchManager.puSearchTag)) // if search tag + show = false; + if (puDLGDirectoryMode && file->fileType != 'd') // directory mode + show = false; + if (show) + prFilteredFileList.push_back(file); + } + } + + std::string IGFD::FileManager::prRoundNumber(double vvalue, int n) + { + std::stringstream tmp; + tmp << std::setprecision(n) << std::fixed << vvalue; + return tmp.str(); + } + + std::string IGFD::FileManager::prFormatFileSize(size_t vByteSize) + { + if (vByteSize != 0) + { + static double lo = 1024.0; + static double ko = 1024.0 * 1024.0; + static double mo = 1024.0 * 1024.0 * 1024.0; + + auto v = (double)vByteSize; + + if (v < lo) + return prRoundNumber(v, 0); // octet + else if (v < ko) + return prRoundNumber(v / lo, 2) + "K"; // ko + else if (v < mo) + return prRoundNumber(v / ko, 2) + "M"; // Mo + else + return prRoundNumber(v / mo, 2) + "G"; // Go + } + + return ""; + } + + void IGFD::FileManager::prCompleteFileInfos(const std::shared_ptr& vInfos) + { + if (!vInfos.use_count()) + return; + + if (vInfos->fileNameExt != "." && + vInfos->fileNameExt != "..") + { + // _stat struct : + //dev_t st_dev; /* ID of device containing file */ + //ino_t st_ino; /* inode number */ + //mode_t st_mode; /* protection */ + //nlink_t st_nlink; /* number of hard links */ + //uid_t st_uid; /* user ID of owner */ + //gid_t st_gid; /* group ID of owner */ + //dev_t st_rdev; /* device ID (if special file) */ + //off_t st_size; /* total size, in bytes */ + //blksize_t st_blksize; /* blocksize for file system I/O */ + //blkcnt_t st_blocks; /* number of 512B blocks allocated */ + //time_t st_atime; /* time of last access - not sure out of ntfs */ + //time_t st_mtime; /* time of last modification - not sure out of ntfs */ + //time_t st_ctime; /* time of last status change - not sure out of ntfs */ + + std::string fpn; + + if (vInfos->fileType == 'f' || vInfos->fileType == 'l' || vInfos->fileType == 'd') // file + fpn = vInfos->filePath + std::string(1u, PATH_SEP) + vInfos->fileNameExt; + + struct stat statInfos = {}; + char timebuf[100]; + int result = stat(fpn.c_str(), &statInfos); + if (!result) + { + if (vInfos->fileType != 'd') + { + vInfos->fileSize = (size_t)statInfos.st_size; + vInfos->formatedFileSize = prFormatFileSize(vInfos->fileSize); + } + + size_t len = 0; +#ifdef MSVC + struct tm _tm; + errno_t err = localtime_s(&_tm, &statInfos.st_mtime); + if (!err) len = strftime(timebuf, 99, DateTimeFormat, &_tm); +#else // MSVC + struct tm* _tm = localtime(&statInfos.st_mtime); + if (_tm) len = strftime(timebuf, 99, DateTimeFormat, _tm); +#endif // MSVC + if (len) + { + vInfos->fileModifDate = std::string(timebuf, len); + } + } + } + } + + void IGFD::FileManager::prRemoveFileNameInSelection(const std::string& vFileName) + { + prSelectedFileNames.erase(vFileName); + + if (prSelectedFileNames.size() == 1) + { + snprintf(puFileNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER, "%s", vFileName.c_str()); + } + else + { + snprintf(puFileNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER, "%zu files Selected", prSelectedFileNames.size()); + } + } + + void IGFD::FileManager::prAddFileNameInSelection(const std::string& vFileName, bool vSetLastSelectionFileName) + { + prSelectedFileNames.emplace(vFileName); + + if (prSelectedFileNames.size() == 1) + { + snprintf(puFileNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER, "%s", vFileName.c_str()); + } + else + { + snprintf(puFileNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER, "%zu files Selected", prSelectedFileNames.size()); + } + + if (vSetLastSelectionFileName) + prLastSelectedFileName = vFileName; + } + + void IGFD::FileManager::SetCurrentDir(const std::string& vPath) + { + std::string path = vPath; +#ifdef WIN32 + if (puFsRoot == path) + path += std::string(1u, PATH_SEP); +#endif // WIN32 + +#ifdef USE_STD_FILESYSTEM + namespace fs = std::filesystem; + bool dir_opened = fs::is_directory(vPath); + if (!dir_opened) + { + path = "."; + dir_opened = fs::is_directory(vPath); + } + if (dir_opened) +#else + DIR* dir = opendir(path.c_str()); + if (dir == nullptr) + { + path = "."; + dir = opendir(path.c_str()); + } + + if (dir != nullptr) +#endif // USE_STD_FILESYSTEM + { +#ifdef WIN32 + DWORD numchar = 0; + // numchar = GetFullPathNameA(path.c_str(), PATH_MAX, real_path, nullptr); + std::wstring wpath = IGFD::Utils::string_to_wstring(path); + numchar = GetFullPathNameW(wpath.c_str(), 0, nullptr, nullptr); + std::wstring fpath(numchar, 0); + GetFullPathNameW(wpath.c_str(), numchar, (wchar_t*)fpath.data(), nullptr); + std::string real_path = IGFD::Utils::wstring_to_string(fpath); + if (real_path.back() == '\0') // for fix issue we can have with std::string concatenation.. if there is a \0 at end + real_path = real_path.substr(0, real_path.size() - 1U); + if (!real_path.empty()) +#elif defined(UNIX) // UNIX is LINUX or APPLE + char real_path[PATH_MAX]; + char* numchar = realpath(path.c_str(), real_path); + if (numchar != nullptr) +#endif // WIN32 + { + prCurrentPath = std::move(real_path); + if (prCurrentPath[prCurrentPath.size() - 1] == PATH_SEP) + { + prCurrentPath = prCurrentPath.substr(0, prCurrentPath.size() - 1); + } + IGFD::Utils::SetBuffer(puInputPathBuffer, MAX_PATH_BUFFER_SIZE, prCurrentPath); + prCurrentPathDecomposition = IGFD::Utils::SplitStringToVector(prCurrentPath, PATH_SEP, false); +#ifdef UNIX // UNIX is LINUX or APPLE + prCurrentPathDecomposition.insert(prCurrentPathDecomposition.begin(), std::string(1u, PATH_SEP)); +#endif // UNIX + if (!prCurrentPathDecomposition.empty()) + { +#ifdef WIN32 + puFsRoot = prCurrentPathDecomposition[0]; +#endif // WIN32 + } + } +#ifndef USE_STD_FILESYSTEM + closedir(dir); +#endif + } + } + + bool IGFD::FileManager::CreateDir(const std::string& vPath) + { + bool res = false; + + if (!vPath.empty()) + { + std::string path = prCurrentPath + std::string(1u, PATH_SEP) + vPath; + + res = IGFD::Utils::CreateDirectoryIfNotExist(path); + } + + return res; + } + + void IGFD::FileManager::ComposeNewPath(std::vector::iterator vIter) + { + std::string res; + + while (true) + { + if (!res.empty()) + { +#ifdef WIN32 + res = *vIter + std::string(1u, PATH_SEP) + res; +#elif defined(UNIX) // UNIX is LINUX or APPLE + if (*vIter == puFsRoot) + res = *vIter + res; + else + res = *vIter + PATH_SEP + res; +#endif // WIN32 + } + else + res = *vIter; + + if (vIter == prCurrentPathDecomposition.begin()) + { +#if defined(UNIX) // UNIX is LINUX or APPLE + if (res[0] != PATH_SEP) + res = PATH_SEP + res; +#endif // defined(UNIX) + break; + } + + --vIter; + } + + prCurrentPath = std::move(res); + } + + bool IGFD::FileManager::SetPathOnParentDirectoryIfAny() + { + if (prCurrentPathDecomposition.size() > 1) + { + ComposeNewPath(prCurrentPathDecomposition.end() - 2); + return true; + } + return false; + } + + std::string IGFD::FileManager::GetCurrentPath() + { + if (prCurrentPath.empty()) + prCurrentPath = "."; + return prCurrentPath; + } + + void IGFD::FileManager::SetCurrentPath(const std::string& vCurrentPath) + { + if (vCurrentPath.empty()) + prCurrentPath = "."; + else + prCurrentPath = vCurrentPath; + } + + bool IGFD::FileManager::IsFileExist(const std::string& vFile) + { + std::ifstream docFile(vFile, std::ios::in); + if (docFile.is_open()) + { + docFile.close(); + return true; + } + return false; + } + + void IGFD::FileManager::SetDefaultFileName(const std::string& vFileName) + { + puDLGDefaultFileName = vFileName; + IGFD::Utils::SetBuffer(puFileNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER, vFileName); + } + + bool IGFD::FileManager::SelectDirectory(const std::shared_ptr& vInfos) + { + if (!vInfos.use_count()) + return false; + + bool pathClick = false; + + if (vInfos->fileNameExt == "..") + { + pathClick = SetPathOnParentDirectoryIfAny(); + } + else + { + std::string newPath; + + if (puShowDrives) + { + newPath = vInfos->fileNameExt + std::string(1u, PATH_SEP); + } + else + { +#ifdef __linux__ + if (puFsRoot == prCurrentPath) + newPath = prCurrentPath + vInfos->fileNameExt; + else +#endif // __linux__ + newPath = prCurrentPath + std::string(1u, PATH_SEP) + vInfos->fileNameExt; + } + + if (IGFD::Utils::IsDirectoryExist(newPath)) + { + if (puShowDrives) + { + prCurrentPath = vInfos->fileNameExt; + puFsRoot = prCurrentPath; + } + else + { + prCurrentPath = newPath; //-V820 + } + pathClick = true; + } + } + + return pathClick; + } + + void IGFD::FileManager::SelectFileName(const FileDialogInternal& vFileDialogInternal, const std::shared_ptr& vInfos) + { + if (!vInfos.use_count()) + return; + + if (ImGui::GetIO().KeyCtrl) + { + if (puDLGcountSelectionMax == 0) // infinite selection + { + if (prSelectedFileNames.find(vInfos->fileNameExt) == prSelectedFileNames.end()) // not found +> add + { + prAddFileNameInSelection(vInfos->fileNameExt, true); + } + else // found +> remove + { + prRemoveFileNameInSelection(vInfos->fileNameExt); + } + } + else // selection limited by size + { + if (prSelectedFileNames.size() < puDLGcountSelectionMax) + { + if (prSelectedFileNames.find(vInfos->fileNameExt) == prSelectedFileNames.end()) // not found +> add + { + prAddFileNameInSelection(vInfos->fileNameExt, true); + } + else // found +> remove + { + prRemoveFileNameInSelection(vInfos->fileNameExt); + } + } + } + } + else if (ImGui::GetIO().KeyShift) + { + if (puDLGcountSelectionMax != 1) + { + prSelectedFileNames.clear(); + // we will iterate filelist and get the last selection after the start selection + bool startMultiSelection = false; + std::string fileNameToSelect = vInfos->fileNameExt; + std::string savedLastSelectedFileName; // for invert selection mode + for (const auto& file : prFileList) + { + if (!file.use_count()) + continue; + + bool canTake = true; + if (!file->IsTagFound(vFileDialogInternal.puSearchManager.puSearchTag)) canTake = false; + if (canTake) // if not filtered, we will take files who are filtered by the dialog + { + if (file->fileNameExt == prLastSelectedFileName) + { + startMultiSelection = true; + prAddFileNameInSelection(prLastSelectedFileName, false); + } + else if (startMultiSelection) + { + if (puDLGcountSelectionMax == 0) // infinite selection + { + prAddFileNameInSelection(file->fileNameExt, false); + } + else // selection limited by size + { + if (prSelectedFileNames.size() < puDLGcountSelectionMax) + { + prAddFileNameInSelection(file->fileNameExt, false); + } + else + { + startMultiSelection = false; + if (!savedLastSelectedFileName.empty()) + prLastSelectedFileName = savedLastSelectedFileName; + break; + } + } + } + + if (file->fileNameExt == fileNameToSelect) + { + if (!startMultiSelection) // we are before the last Selected FileName, so we must inverse + { + savedLastSelectedFileName = prLastSelectedFileName; + prLastSelectedFileName = fileNameToSelect; + fileNameToSelect = savedLastSelectedFileName; + startMultiSelection = true; + prAddFileNameInSelection(prLastSelectedFileName, false); + } + else + { + startMultiSelection = false; + if (!savedLastSelectedFileName.empty()) + prLastSelectedFileName = savedLastSelectedFileName; + break; + } + } + } + } + } + } + else + { + prSelectedFileNames.clear(); + IGFD::Utils::ResetBuffer(puFileNameBuffer); + prAddFileNameInSelection(vInfos->fileNameExt, true); + } + } + + void IGFD::FileManager::DrawDirectoryCreation(const FileDialogInternal& vFileDialogInternal) + { + if (vFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_DisableCreateDirectoryButton) + return; + + if (IMGUI_BUTTON(createDirButtonString)) + { + if (!prCreateDirectoryMode) + { + prCreateDirectoryMode = true; + IGFD::Utils::ResetBuffer(puDirectoryNameBuffer); + } + } + if (ImGui::IsItemHovered()) + ImGui::SetTooltip(buttonCreateDirString); + + if (prCreateDirectoryMode) + { + ImGui::SameLine(); + + ImGui::PushItemWidth(100.0f); + ImGui::InputText("##DirectoryFileName", puDirectoryNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER); + ImGui::PopItemWidth(); + + ImGui::SameLine(); + + if (IMGUI_BUTTON(okButtonString)) + { + std::string newDir = std::string(puDirectoryNameBuffer); + if (CreateDir(newDir)) + { + SetCurrentPath(prCurrentPath + std::string(1u, PATH_SEP) + newDir); + OpenCurrentPath(vFileDialogInternal); + } + + prCreateDirectoryMode = false; + } + + ImGui::SameLine(); + + if (IMGUI_BUTTON(cancelButtonString)) + { + prCreateDirectoryMode = false; + } + } + } + + void IGFD::FileManager::DrawPathComposer(const FileDialogInternal& vFileDialogInternal) + { + if (IMGUI_BUTTON(resetButtonString)) + { + SetCurrentPath("."); + OpenCurrentPath(vFileDialogInternal); + } + if (ImGui::IsItemHovered()) + ImGui::SetTooltip(buttonResetPathString); + +#ifdef WIN32 + ImGui::SameLine(); + + if (IMGUI_BUTTON(drivesButtonString)) + { + puDrivesClicked = true; + } + if (ImGui::IsItemHovered()) + ImGui::SetTooltip(buttonDriveString); +#endif // WIN32 + + ImGui::SameLine(); + + if (IMGUI_BUTTON(editPathButtonString)) + { + puInputPathActivated = true; + } + if (ImGui::IsItemHovered()) + ImGui::SetTooltip(buttonEditPathString); + + ImGui::SameLine(); + + ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical); + + // show current path + if (!prCurrentPathDecomposition.empty()) + { + ImGui::SameLine(); + + if (puInputPathActivated) + { + ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x); + ImGui::InputText("##pathedition", puInputPathBuffer, MAX_PATH_BUFFER_SIZE); + ImGui::PopItemWidth(); + } + else + { + int _id = 0; + for (auto itPathDecomp = prCurrentPathDecomposition.begin(); + itPathDecomp != prCurrentPathDecomposition.end(); ++itPathDecomp) + { + if (itPathDecomp != prCurrentPathDecomposition.begin()) + ImGui::SameLine(); + ImGui::PushID(_id++); + bool click = IMGUI_PATH_BUTTON((*itPathDecomp).c_str()); + ImGui::PopID(); + if (click) + { + ComposeNewPath(itPathDecomp); + puPathClicked = true; + break; + } + // activate input for path + if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) + { + ComposeNewPath(itPathDecomp); + IGFD::Utils::SetBuffer(puInputPathBuffer, MAX_PATH_BUFFER_SIZE, prCurrentPath); + puInputPathActivated = true; + break; + } + } + } + } + } + + std::string IGFD::FileManager::GetResultingPath() + { + std::string path = prCurrentPath; + + if (puDLGDirectoryMode) // if directory mode + { + std::string selectedDirectory = puFileNameBuffer; + if (!selectedDirectory.empty() && + selectedDirectory != ".") + path += std::string(1u, PATH_SEP) + selectedDirectory; + } + + return path; + } + + std::string IGFD::FileManager::GetResultingFileName(FileDialogInternal& vFileDialogInternal) + { + if (!puDLGDirectoryMode) // if not directory mode + { + return puFileNameBuffer; //vFileDialogInternal.puFilterManager.ReplaceExtentionWithCurrentFilter(std::string(puFileNameBuffer)); + } + + return ""; // directory mode + } + + std::string IGFD::FileManager::GetResultingFilePathName(FileDialogInternal& vFileDialogInternal) + { + std::string result = GetResultingPath(); + + std::string filename = GetResultingFileName(vFileDialogInternal); + if (!filename.empty()) + { +#ifdef UNIX + if (puFsRoot != result) +#endif // UNIX + result += std::string(1u, PATH_SEP); + + result += filename; + } + + return result; + } + + std::map IGFD::FileManager::GetResultingSelection() + { + std::map res; + + for (auto& selectedFileName : prSelectedFileNames) + { + std::string result = GetResultingPath(); + +#ifdef UNIX + if (puFsRoot != result) +#endif // UNIX + result += std::string(1u, PATH_SEP); + + result += selectedFileName; + + res[selectedFileName] = result; + } + + return res; + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILE DIALOG INTERNAL /////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + void IGFD::FileDialogInternal::NewFrame() + { + puCanWeContinue = true; // reset flag for possibily validate the dialog + puIsOk = false; // reset dialog result + puFileManager.puDrivesClicked = false; + puFileManager.puPathClicked = false; + + puNeedToExitDialog = false; + +#ifdef USE_DIALOG_EXIT_WITH_KEY + if (ImGui::IsKeyPressed(IGFD_EXIT_KEY)) + { + // we do that here with the data's defined at the last frame + // because escape key can quit input activation and at the end of the frame all flag will be false + // so we will detect nothing + if (!(puFileManager.puInputPathActivated || + puSearchManager.puSearchInputIsActive || + puFileInputIsActive || + puFileListViewIsActive)) + { + puNeedToExitDialog = true; // need to quit dialog + } + } + else +#endif + { + puSearchManager.puSearchInputIsActive = false; + puFileInputIsActive = false; + puFileListViewIsActive = false; + } + } + + void IGFD::FileDialogInternal::EndFrame() + { + // directory change + if (puFileManager.puPathClicked) + { + puFileManager.OpenCurrentPath(*this); + } + + if (puFileManager.puDrivesClicked) + { + if (puFileManager.GetDrives()) + { + puFileManager.ApplyFilteringOnFileList(*this); + } + } + + if (puFileManager.puInputPathActivated) + { + auto gio = ImGui::GetIO(); + if (ImGui::IsKeyReleased(gio.KeyMap[ImGuiKey_Enter])) + { + puFileManager.SetCurrentPath(std::string(puFileManager.puInputPathBuffer)); + puFileManager.OpenCurrentPath(*this); + puFileManager.puInputPathActivated = false; + } + if (ImGui::IsKeyReleased(gio.KeyMap[ImGuiKey_Escape])) + { + puFileManager.puInputPathActivated = false; + } + } + } + + void IGFD::FileDialogInternal::ResetForNewDialog() + { + + } + + ///////////////////////////////////////////////////////////////////////////////////// + //// THUMBNAIL FEATURE ////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + IGFD::ThumbnailFeature::ThumbnailFeature() + { +#ifdef USE_THUMBNAILS + prDisplayMode = DisplayModeEnum::FILE_LIST; +#endif + } + + IGFD::ThumbnailFeature::~ThumbnailFeature() = default; + + void IGFD::ThumbnailFeature::NewThumbnailFrame(FileDialogInternal& vFileDialogInternal) + { + (void)vFileDialogInternal; + +#ifdef USE_THUMBNAILS + prStartThumbnailFileDatasExtraction(); +#endif + } + + void IGFD::ThumbnailFeature::EndThumbnailFrame(FileDialogInternal& vFileDialogInternal) + { +#ifdef USE_THUMBNAILS + prClearThumbnails(vFileDialogInternal); +#endif + } + + void IGFD::ThumbnailFeature::QuitThumbnailFrame(FileDialogInternal& vFileDialogInternal) + { +#ifdef USE_THUMBNAILS + prStopThumbnailFileDatasExtraction(); + prClearThumbnails(vFileDialogInternal); +#endif + } + +#ifdef USE_THUMBNAILS + void IGFD::ThumbnailFeature::prStartThumbnailFileDatasExtraction() + { + const bool res = prThumbnailGenerationThread.use_count() && prThumbnailGenerationThread->joinable(); + if (!res) + { + prIsWorking = true; + prCountFiles = 0U; + prThumbnailGenerationThread = std::shared_ptr( + new std::thread(&IGFD::ThumbnailFeature::prThreadThumbnailFileDatasExtractionFunc, this), + [this](std::thread* obj) + { + prIsWorking = false; + if (obj) + obj->join(); + }); + } + } + + bool IGFD::ThumbnailFeature::prStopThumbnailFileDatasExtraction() + { + const bool res = prThumbnailGenerationThread.use_count() && prThumbnailGenerationThread->joinable(); + if (res) + { + prThumbnailGenerationThread.reset(); + } + + return res; + } + + void IGFD::ThumbnailFeature::prThreadThumbnailFileDatasExtractionFunc() + { + prCountFiles = 0U; + prIsWorking = true; + + // infinite loop while is thread working + while(prIsWorking) + { + if (!prThumbnailFileDatasToGet.empty()) + { + std::shared_ptr file = nullptr; + prThumbnailFileDatasToGetMutex.lock(); + //get the first file in the list + file = (*prThumbnailFileDatasToGet.begin()); + prThumbnailFileDatasToGetMutex.unlock(); + + // retrieve datas of the texture file if its an image file + if (file.use_count()) + { + if (file->fileType == 'f') //-V522 + { + if (file->fileExt == ".png" + || file->fileExt == ".bmp" + || file->fileExt == ".tga" + || file->fileExt == ".jpg" || file->fileExt == ".jpeg" + || file->fileExt == ".gif" + || file->fileExt == ".psd" + || file->fileExt == ".pic" + || file->fileExt == ".ppm" || file->fileExt == ".pgm" + //|| file->fileExt == ".hdr" => format float so in few times + ) + { + auto fpn = file->filePath + std::string(1u, PATH_SEP) + file->fileNameExt; + + int w = 0; + int h = 0; + int chans = 0; + uint8_t *datas = stbi_load(fpn.c_str(), &w, &h, &chans, STBI_rgb_alpha); + if (datas) + { + if (w && h) + { + // resize with respect to glyph ratio + const float ratioX = (float)w / (float)h; + const float newX = DisplayMode_ThumbailsList_ImageHeight * ratioX; + float newY = w / ratioX; + if (newX < w) + newY = DisplayMode_ThumbailsList_ImageHeight; + + const auto newWidth = (int)newX; + const auto newHeight = (int)newY; + const auto newBufSize = (size_t)(newWidth * newHeight * 4U); //-V112 //-V1028 + auto resizedData = new uint8_t[newBufSize]; + + const int resizeSucceeded = stbir_resize_uint8( + datas, w, h, 0, + resizedData, newWidth, newHeight, 0, + 4); //-V112 + + if (resizeSucceeded) + { + auto th = &file->thumbnailInfo; + + th->textureFileDatas = resizedData; + th->textureWidth = newWidth; + th->textureHeight = newHeight; + th->textureChannels = 4; //-V112 + + // we set that at least, because will launch the gpu creation of the texture in the main thread + th->isReadyToUpload = true; + + // need gpu loading + prAddThumbnailToCreate(file); + } + } + else + { + printf("image loading fail : w:%i h:%i c:%i\n", w, h, 4); //-V112 + } + + stbi_image_free(datas); + } + } + } + + // peu importe le resultat on vire le fichicer + // remove form this list + // write => thread concurency issues + prThumbnailFileDatasToGetMutex.lock(); + prThumbnailFileDatasToGet.pop_front(); + prThumbnailFileDatasToGetMutex.unlock(); + } + } + } + } + + inline void inVariadicProgressBar(float fraction, const ImVec2& size_arg, const char* fmt, ...) + { + va_list args; + va_start(args, fmt); + char TempBuffer[512]; + const int w = vsnprintf(TempBuffer, 511, fmt, args); + va_end(args); + if (w) + { + ImGui::ProgressBar(fraction, size_arg, TempBuffer); + } + } + + void IGFD::ThumbnailFeature::prDrawThumbnailGenerationProgress() + { + if (prThumbnailGenerationThread.use_count() && prThumbnailGenerationThread->joinable()) + { + if (!prThumbnailFileDatasToGet.empty()) + { + const auto p = (float)((double)prCountFiles / (double)prThumbnailFileDatasToGet.size()); // read => no thread concurency issues + inVariadicProgressBar(p, ImVec2(50, 0), "%u/%u", prCountFiles, (uint32_t)prThumbnailFileDatasToGet.size()); // read => no thread concurency issues + ImGui::SameLine(); + } + } + } + + void IGFD::ThumbnailFeature::prAddThumbnailToLoad(const std::shared_ptr& vFileInfos) + { + if (vFileInfos.use_count()) + { + if (vFileInfos->fileType == 'f') + { + if (vFileInfos->fileExt == ".png" + || vFileInfos->fileExt == ".bmp" + || vFileInfos->fileExt == ".tga" + || vFileInfos->fileExt == ".jpg" || vFileInfos->fileExt == ".jpeg" + || vFileInfos->fileExt == ".gif" + || vFileInfos->fileExt == ".psd" + || vFileInfos->fileExt == ".pic" + || vFileInfos->fileExt == ".ppm" || vFileInfos->fileExt == ".pgm" + //|| file->fileExt == ".hdr" => format float so in few times + ) + { + // write => thread concurency issues + prThumbnailFileDatasToGetMutex.lock(); + prThumbnailFileDatasToGet.push_back(vFileInfos); + vFileInfos->thumbnailInfo.isLoadingOrLoaded = true; + prThumbnailFileDatasToGetMutex.unlock(); + } + } + } + } + + void IGFD::ThumbnailFeature::prAddThumbnailToCreate(const std::shared_ptr& vFileInfos) + { + if (vFileInfos.use_count()) + { + // write => thread concurency issues + prThumbnailToCreateMutex.lock(); + prThumbnailToCreate.push_back(vFileInfos); + prThumbnailToCreateMutex.unlock(); + } + } + + void IGFD::ThumbnailFeature::prAddThumbnailToDestroy(const IGFD_Thumbnail_Info& vIGFD_Thumbnail_Info) + { + // write => thread concurency issues + prThumbnailToDestroyMutex.lock(); + prThumbnailToDestroy.push_back(vIGFD_Thumbnail_Info); + prThumbnailToDestroyMutex.unlock(); + } + + void IGFD::ThumbnailFeature::prDrawDisplayModeToolBar() + { + if (IMGUI_RADIO_BUTTON(DisplayMode_FilesList_ButtonString, + prDisplayMode == DisplayModeEnum::FILE_LIST)) + prDisplayMode = DisplayModeEnum::FILE_LIST; + if (ImGui::IsItemHovered()) ImGui::SetTooltip(DisplayMode_FilesList_ButtonHelp); + ImGui::SameLine(); + if (IMGUI_RADIO_BUTTON(DisplayMode_ThumbailsList_ButtonString, + prDisplayMode == DisplayModeEnum::THUMBNAILS_LIST)) + prDisplayMode = DisplayModeEnum::THUMBNAILS_LIST; + if (ImGui::IsItemHovered()) ImGui::SetTooltip(DisplayMode_ThumbailsList_ButtonHelp); + ImGui::SameLine(); + /* todo + if (IMGUI_RADIO_BUTTON(DisplayMode_ThumbailsGrid_ButtonString, + prDisplayMode == DisplayModeEnum::THUMBNAILS_GRID)) + prDisplayMode = DisplayModeEnum::THUMBNAILS_GRID; + if (ImGui::IsItemHovered()) ImGui::SetTooltip(DisplayMode_ThumbailsGrid_ButtonHelp); + ImGui::SameLine(); + */ + prDrawThumbnailGenerationProgress(); + } + + void IGFD::ThumbnailFeature::prClearThumbnails(FileDialogInternal& vFileDialogInternal) + { + // directory wil be changed so the file list will be erased + if (vFileDialogInternal.puFileManager.puPathClicked) + { + size_t count = vFileDialogInternal.puFileManager.GetFullFileListSize(); + for (size_t idx = 0U; idx < count; idx++) + { + auto file = vFileDialogInternal.puFileManager.GetFullFileAt(idx); + if (file.use_count()) + { + if (file->thumbnailInfo.isReadyToDisplay) //-V522 + { + prAddThumbnailToDestroy(file->thumbnailInfo); + } + } + } + } + } + + void IGFD::ThumbnailFeature::SetCreateThumbnailCallback(const CreateThumbnailFun& vCreateThumbnailFun) + { + prCreateThumbnailFun = vCreateThumbnailFun; + } + + void IGFD::ThumbnailFeature::SetDestroyThumbnailCallback(const DestroyThumbnailFun& vCreateThumbnailFun) + { + prDestroyThumbnailFun = vCreateThumbnailFun; + } + + void IGFD::ThumbnailFeature::ManageGPUThumbnails() + { + if (prCreateThumbnailFun) + { + if (!prThumbnailToCreate.empty()) + { + for (const auto& file : prThumbnailToCreate) + { + if (file.use_count()) + { + prCreateThumbnailFun(&file->thumbnailInfo); + } + } + prThumbnailToCreateMutex.lock(); + prThumbnailToCreate.clear(); + prThumbnailToCreateMutex.unlock(); + } + } + else + { + printf("No Callback found for create texture\nYou need to define the callback with a call to SetCreateThumbnailCallback\n"); + } + + if (prDestroyThumbnailFun) + { + if (!prThumbnailToDestroy.empty()) + { + for (auto thumbnail : prThumbnailToDestroy) + { + prDestroyThumbnailFun(&thumbnail); + } + prThumbnailToDestroyMutex.lock(); + prThumbnailToDestroy.clear(); + prThumbnailToDestroyMutex.unlock(); + } + } + else + { + printf("No Callback found for destroy texture\nYou need to define the callback with a call to SetCreateThumbnailCallback\n"); + } + } + +#endif // USE_THUMBNAILS + + ///////////////////////////////////////////////////////////////////////////////////// + //// BOOKMARK FEATURE /////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + IGFD::BookMarkFeature::BookMarkFeature() + { +#ifdef USE_BOOKMARK + prBookmarkWidth = defaultBookmarkPaneWith; +#endif // USE_BOOKMARK + } + +#ifdef USE_BOOKMARK + void IGFD::BookMarkFeature::prDrawBookmarkButton() + { + IMGUI_TOGGLE_BUTTON(bookmarksButtonString, &prBookmarkPaneShown); + + if (ImGui::IsItemHovered()) + ImGui::SetTooltip(bookmarksButtonHelpString); + } + bool IGFD::BookMarkFeature::prDrawBookmarkPane(FileDialogInternal& vFileDialogInternal, const ImVec2& vSize) + { + bool res = false; + + ImGui::BeginChild("##bookmarkpane", vSize); + + static int selectedBookmarkForEdition = -1; + + if (IMGUI_BUTTON(addBookmarkButtonString "##ImGuiFileDialogAddBookmark")) + { + if (!vFileDialogInternal.puFileManager.IsComposerEmpty()) + { + BookmarkStruct bookmark; + bookmark.name = vFileDialogInternal.puFileManager.GetBack(); + bookmark.path = vFileDialogInternal.puFileManager.GetCurrentPath(); + prBookmarks.push_back(bookmark); + } + } + if (selectedBookmarkForEdition >= 0 && + selectedBookmarkForEdition < (int)prBookmarks.size()) + { + ImGui::SameLine(); + if (IMGUI_BUTTON(removeBookmarkButtonString "##ImGuiFileDialogAddBookmark")) + { + prBookmarks.erase(prBookmarks.begin() + selectedBookmarkForEdition); + if (selectedBookmarkForEdition == (int)prBookmarks.size()) + selectedBookmarkForEdition--; + } + + if (selectedBookmarkForEdition >= 0 && + selectedBookmarkForEdition < (int)prBookmarks.size()) + { + ImGui::SameLine(); + + ImGui::PushItemWidth(vSize.x - ImGui::GetCursorPosX()); + if (ImGui::InputText("##ImGuiFileDialogBookmarkEdit", prBookmarkEditBuffer, MAX_FILE_DIALOG_NAME_BUFFER)) + { + prBookmarks[(size_t)selectedBookmarkForEdition].name = std::string(prBookmarkEditBuffer); + } + ImGui::PopItemWidth(); + } + } + + ImGui::Separator(); + + if (!prBookmarks.empty()) + { + prBookmarkClipper.Begin((int)prBookmarks.size(), ImGui::GetTextLineHeightWithSpacing()); + while (prBookmarkClipper.Step()) + { + for (int i = prBookmarkClipper.DisplayStart; i < prBookmarkClipper.DisplayEnd; i++) + { + if (i < 0) continue; + const BookmarkStruct& bookmark = prBookmarks[(size_t)i]; + ImGui::PushID(i); + if (ImGui::Selectable(bookmark.name.c_str(), selectedBookmarkForEdition == i, + ImGuiSelectableFlags_AllowDoubleClick) | + (selectedBookmarkForEdition == -1 && + bookmark.path == vFileDialogInternal.puFileManager.GetCurrentPath())) // select if path is current + { + selectedBookmarkForEdition = i; + IGFD::Utils::ResetBuffer(prBookmarkEditBuffer); + IGFD::Utils::AppendToBuffer(prBookmarkEditBuffer, MAX_FILE_DIALOG_NAME_BUFFER, bookmark.name); + + if (ImGui::IsMouseDoubleClicked(0)) // apply path + { + vFileDialogInternal.puFileManager.SetCurrentPath(bookmark.path); + vFileDialogInternal.puFileManager.OpenCurrentPath(vFileDialogInternal); + res = true; + } + } + ImGui::PopID(); + if (ImGui::IsItemHovered()) + ImGui::SetTooltip("%s", bookmark.path.c_str()); //-V111 + } + } + prBookmarkClipper.End(); + } + + ImGui::EndChild(); + + return res; + } + + std::string IGFD::BookMarkFeature::SerializeBookmarks() + { + std::string res; + + size_t idx = 0; + for (auto& it : prBookmarks) + { + if (idx++ != 0) + res += "##"; // ## because reserved by imgui, so an input text cant have ## + res += it.name + "##" + it.path; + } + + return res; + } + + void IGFD::BookMarkFeature::DeserializeBookmarks(const std::string& vBookmarks) + { + if (!vBookmarks.empty()) + { + prBookmarks.clear(); + auto arr = IGFD::Utils::SplitStringToVector(vBookmarks, '#', false); + for (size_t i = 0; i < arr.size(); i += 2) + { + BookmarkStruct bookmark; + bookmark.name = arr[i]; + if (i + 1 < arr.size()) // for avoid crash if arr size is impair due to user mistake after edition + { + // if bad format we jump this bookmark + bookmark.path = arr[i + 1]; + prBookmarks.push_back(bookmark); + } + } + } + } +#endif // USE_BOOKMARK + + ///////////////////////////////////////////////////////////////////////////////////// + //// KEY EXPLORER FEATURE /////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + KeyExplorerFeature::KeyExplorerFeature() = default; + +#ifdef USE_EXPLORATION_BY_KEYS + bool IGFD::KeyExplorerFeature::prLocateItem_Loop(FileDialogInternal& vFileDialogInternal, ImWchar vC) + { + bool found = false; + + auto& fdi = vFileDialogInternal.puFileManager; + if (!fdi.IsFilteredListEmpty()) + { + auto countFiles = fdi.GetFilteredListSize(); + for (size_t i = prLocateFileByInputChar_lastFileIdx; i < countFiles; i++) + { + auto nfo = fdi.GetFilteredFileAt(i); + if (nfo.use_count()) + { + if (nfo->fileNameExt_optimized[0] == vC || // lower case search //-V522 + nfo->fileNameExt[0] == vC) // maybe upper case search + { + //float p = ((float)i) * ImGui::GetTextLineHeightWithSpacing(); + float p = (float)((double)i / (double)countFiles) * ImGui::GetScrollMaxY(); + ImGui::SetScrollY(p); + prLocateFileByInputChar_lastFound = true; + prLocateFileByInputChar_lastFileIdx = i; + prStartFlashItem(prLocateFileByInputChar_lastFileIdx); + + auto infos = fdi.GetFilteredFileAt(prLocateFileByInputChar_lastFileIdx); + if (infos.use_count()) + { + if (infos->fileType == 'd') //-V522 + { + if (fdi.puDLGDirectoryMode) // directory chooser + { + fdi.SelectFileName(vFileDialogInternal, infos); + } + } + else + { + fdi.SelectFileName(vFileDialogInternal, infos); + } + + found = true; + break; + } + } + } + } + } + + return found; + } + + void IGFD::KeyExplorerFeature::prLocateByInputKey(FileDialogInternal& vFileDialogInternal) + { + ImGuiContext& g = *GImGui; + auto& fdi = vFileDialogInternal.puFileManager; + if (!g.ActiveId && !fdi.IsFilteredListEmpty()) + { + auto& queueChar = ImGui::GetIO().InputQueueCharacters; + auto countFiles = fdi.GetFilteredListSize(); + + // point by char + if (!queueChar.empty()) + { + ImWchar c = queueChar.back(); + if (prLocateFileByInputChar_InputQueueCharactersSize != queueChar.size()) + { + if (c == prLocateFileByInputChar_lastChar) // next file starting with same char until + { + if (prLocateFileByInputChar_lastFileIdx < countFiles - 1U) + prLocateFileByInputChar_lastFileIdx++; + else + prLocateFileByInputChar_lastFileIdx = 0; + } + + if (!prLocateItem_Loop(vFileDialogInternal, c)) + { + // not found, loop again from 0 this time + prLocateFileByInputChar_lastFileIdx = 0; + prLocateItem_Loop(vFileDialogInternal, c); + } + + prLocateFileByInputChar_lastChar = c; + } + } + + prLocateFileByInputChar_InputQueueCharactersSize = queueChar.size(); + } + } + + void IGFD::KeyExplorerFeature::prExploreWithkeys(FileDialogInternal& vFileDialogInternal, ImGuiID vListViewID) + { + auto& fdi = vFileDialogInternal.puFileManager; + if (!fdi.IsFilteredListEmpty()) + { + bool canWeExplore = false; + bool hasNav = (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard); + + ImGuiContext& g = *GImGui; + if (!hasNav && !g.ActiveId) // no nav and no activated inputs + canWeExplore = true; + + if (g.NavId && g.NavId == vListViewID) + { + if (ImGui::IsKeyPressedMap(IGFD_KEY_ENTER) || + ImGui::IsKeyPressedMap(ImGuiKey_KeyPadEnter) || + ImGui::IsKeyPressedMap(ImGuiKey_Space)) + { + ImGui::ActivateItem(vListViewID); + ImGui::SetActiveID(vListViewID, g.CurrentWindow); + } + } + + if (vListViewID == g.LastActiveId-1) // if listview id is the last acticated nav id (ImGui::ActivateItem(vListViewID);) + canWeExplore = true; + + if (canWeExplore) + { + if (ImGui::IsKeyPressedMap(ImGuiKey_Escape)) + { + ImGui::ClearActiveID(); + g.LastActiveId = 0; + } + + auto countFiles = fdi.GetFilteredListSize(); + + // explore + bool exploreByKey = false; + bool enterInDirectory = false; + bool exitDirectory = false; + + if ((hasNav && ImGui::IsKeyPressedMap(ImGuiKey_UpArrow)) || (!hasNav && ImGui::IsKeyPressed(IGFD_KEY_UP))) + { + exploreByKey = true; + if (prLocateFileByInputChar_lastFileIdx > 0) + prLocateFileByInputChar_lastFileIdx--; + else + prLocateFileByInputChar_lastFileIdx = countFiles - 1U; + } + else if ((hasNav && ImGui::IsKeyPressedMap(ImGuiKey_DownArrow)) || (!hasNav && ImGui::IsKeyPressed(IGFD_KEY_DOWN))) + { + exploreByKey = true; + if (prLocateFileByInputChar_lastFileIdx < countFiles - 1U) + prLocateFileByInputChar_lastFileIdx++; + else + prLocateFileByInputChar_lastFileIdx = 0U; + } + else if (ImGui::IsKeyReleased(IGFD_KEY_ENTER)) + { + exploreByKey = true; + enterInDirectory = true; + } + else if (ImGui::IsKeyReleased(IGFD_KEY_BACKSPACE)) + { + exploreByKey = true; + exitDirectory = true; + } + + if (exploreByKey) + { + //float totalHeight = prFilteredFileList.size() * ImGui::GetTextLineHeightWithSpacing(); + float p = (float)((double)prLocateFileByInputChar_lastFileIdx / (double)(countFiles - 1U)) * ImGui::GetScrollMaxY();// seems not udpated in tables version outside tables + //float p = ((float)locateFileByInputChar_lastFileIdx) * ImGui::GetTextLineHeightWithSpacing(); + ImGui::SetScrollY(p); + prStartFlashItem(prLocateFileByInputChar_lastFileIdx); + + auto infos = fdi.GetFilteredFileAt(prLocateFileByInputChar_lastFileIdx); + if (infos.use_count()) + { + if (infos->fileType == 'd') //-V522 + { + if (!fdi.puDLGDirectoryMode || enterInDirectory) + { + if (enterInDirectory) + { + if (fdi.SelectDirectory(infos)) + { + // changement de repertoire + vFileDialogInternal.puFileManager.OpenCurrentPath(vFileDialogInternal); + if (prLocateFileByInputChar_lastFileIdx > countFiles - 1U) + { + prLocateFileByInputChar_lastFileIdx = 0; + } + } + } + } + else // directory chooser + { + fdi.SelectFileName(vFileDialogInternal, infos); + } + } + else + { + fdi.SelectFileName(vFileDialogInternal, infos); + } + + if (exitDirectory) + { + auto nfo = std::make_shared(); + nfo->fileNameExt = ".."; + + if (fdi.SelectDirectory(nfo)) + { + // changement de repertoire + vFileDialogInternal.puFileManager.OpenCurrentPath(vFileDialogInternal); + if (prLocateFileByInputChar_lastFileIdx > countFiles - 1U) + { + prLocateFileByInputChar_lastFileIdx = 0; + } + } +#ifdef WIN32 + else + { + if (fdi.GetComposerSize() == 1U) + { + if (fdi.GetDrives()) + { + fdi.ApplyFilteringOnFileList(vFileDialogInternal); + } + } + } +#endif // WIN32 + } + } + } + } + } + } + + bool IGFD::KeyExplorerFeature::prFlashableSelectable(const char* label, bool selected, + ImGuiSelectableFlags flags, bool vFlashing, const ImVec2& size_arg) + { + using namespace ImGui; + + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + ImGuiContext& g = *GImGui; + const ImGuiStyle& style = g.Style; + + // Submit label or explicit size to ItemSize(), whereas ItemAdd() will submit a larger/spanning rectangle. + ImGuiID id = window->GetID(label); + ImVec2 label_size = CalcTextSize(label, nullptr, true); + ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y); //-V550 + ImVec2 pos = window->DC.CursorPos; + pos.y += window->DC.CurrLineTextBaseOffset; + ItemSize(size, 0.0f); + + // Fill horizontal space + // We don't support (size < 0.0f) in Selectable() because the ItemSpacing extension would make explicitly right-aligned sizes not visibly match other widgets. + const bool span_all_columns = (flags & ImGuiSelectableFlags_SpanAllColumns) != 0; + const float min_x = span_all_columns ? window->ParentWorkRect.Min.x : pos.x; + const float max_x = span_all_columns ? window->ParentWorkRect.Max.x : window->WorkRect.Max.x; + if (fabs(size_arg.x) < FLT_EPSILON || (flags & ImGuiSelectableFlags_SpanAvailWidth)) + size.x = ImMax(label_size.x, max_x - min_x); + + // Text stays at the submission position, but bounding box may be extended on both sides + const ImVec2 text_min = pos; + const ImVec2 text_max(min_x + size.x, pos.y + size.y); + + // Selectables are meant to be tightly packed together with no click-gap, so we extend their box to cover spacing between selectable. + ImRect bb(min_x, pos.y, text_max.x, text_max.y); + if ((flags & ImGuiSelectableFlags_NoPadWithHalfSpacing) == 0) + { + const float spacing_x = span_all_columns ? 0.0f : style.ItemSpacing.x; + const float spacing_y = style.ItemSpacing.y; + const float spacing_L = IM_FLOOR(spacing_x * 0.50f); + const float spacing_U = IM_FLOOR(spacing_y * 0.50f); + bb.Min.x -= spacing_L; + bb.Min.y -= spacing_U; + bb.Max.x += (spacing_x - spacing_L); + bb.Max.y += (spacing_y - spacing_U); + } + //if (g.IO.KeyCtrl) { GetForegroundDrawList()->AddRect(bb.Min, bb.Max, IM_COL32(0, 255, 0, 255)); } + + // Modify ClipRect for the ItemAdd(), faster than doing a PushColumnsBackground/PushTableBackground for every Selectable.. + const float backup_clip_rect_min_x = window->ClipRect.Min.x; + const float backup_clip_rect_max_x = window->ClipRect.Max.x; + if (span_all_columns) + { + window->ClipRect.Min.x = window->ParentWorkRect.Min.x; + window->ClipRect.Max.x = window->ParentWorkRect.Max.x; + } + + bool item_add; + const bool disabled_item = (flags & ImGuiSelectableFlags_Disabled) != 0; + if (disabled_item) + { + ImGuiItemFlags backup_item_flags = g.CurrentItemFlags; + g.CurrentItemFlags |= ImGuiItemFlags_Disabled; + item_add = ItemAdd(bb, id); + g.CurrentItemFlags = backup_item_flags; + } + else + { + item_add = ItemAdd(bb, id); + } + + if (span_all_columns) + { + window->ClipRect.Min.x = backup_clip_rect_min_x; + window->ClipRect.Max.x = backup_clip_rect_max_x; + } + + if (!item_add) + return false; + + const bool disabled_global = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0; + if (disabled_item && !disabled_global) // Only testing this as an optimization + BeginDisabled(true); + + // FIXME: We can standardize the behavior of those two, we could also keep the fast path of override ClipRect + full push on render only, + // which would be advantageous since most selectable are not selected. + if (span_all_columns && window->DC.CurrentColumns) + PushColumnsBackground(); + else if (span_all_columns && g.CurrentTable) + TablePushBackgroundChannel(); + + // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries + ImGuiButtonFlags button_flags = 0; + if (flags & ImGuiSelectableFlags_NoHoldingActiveID) { button_flags |= ImGuiButtonFlags_NoHoldingActiveId; } + if (flags & ImGuiSelectableFlags_SelectOnClick) { button_flags |= ImGuiButtonFlags_PressedOnClick; } + if (flags & ImGuiSelectableFlags_SelectOnRelease) { button_flags |= ImGuiButtonFlags_PressedOnRelease; } + if (flags & ImGuiSelectableFlags_AllowDoubleClick) { button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick; } + if (flags & ImGuiSelectableFlags_AllowItemOverlap) { button_flags |= ImGuiButtonFlags_AllowItemOverlap; } + + const bool was_selected = selected; + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags); + + // Auto-select when moved into + // - This will be more fully fleshed in the range-select branch + // - This is not exposed as it won't nicely work with some user side handling of shift/control + // - We cannot do 'if (g.NavJustMovedToId != id) { selected = false; pressed = was_selected; }' for two reasons + // - (1) it would require focus scope to be set, need exposing PushFocusScope() or equivalent (e.g. BeginSelection() calling PushFocusScope()) + // - (2) usage will fail with clipped items + // The multi-select API aim to fix those issues, e.g. may be replaced with a BeginSelection() API. + if ((flags & ImGuiSelectableFlags_SelectOnNav) && g.NavJustMovedToId != 0 && g.NavJustMovedToFocusScopeId == window->DC.NavFocusScopeIdCurrent) + if (g.NavJustMovedToId == id) + selected = pressed = true; + + // Update NavId when clicking or when Hovering (this doesn't happen on most widgets), so navigation can be resumed with gamepad/keyboard + if (pressed || (hovered && (flags & ImGuiSelectableFlags_SetNavIdOnHover))) + { + if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent) + { + SetNavID(id, window->DC.NavLayerCurrent, window->DC.NavFocusScopeIdCurrent, ImRect(bb.Min - window->Pos, bb.Max - window->Pos)); + g.NavDisableHighlight = true; + } + } + if (pressed) + MarkItemEdited(id); + + if (flags & ImGuiSelectableFlags_AllowItemOverlap) + SetItemAllowOverlap(); + + // In this branch, Selectable() cannot toggle the selection so this will never trigger. + if (selected != was_selected) //-V547 + g.LastItemData.StatusFlags |= ImGuiItemStatusFlags_ToggledSelection; + + // Render + if ((held && (flags & ImGuiSelectableFlags_DrawHoveredWhenHeld)) || vFlashing) + hovered = true; + if (hovered || selected) + { + const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header); + RenderFrame(bb.Min, bb.Max, col, false, 0.0f); + } + RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding); + + if (span_all_columns && window->DC.CurrentColumns) + PopColumnsBackground(); + else if (span_all_columns && g.CurrentTable) + TablePopBackgroundChannel(); + + RenderTextClipped(text_min, text_max, label, nullptr, &label_size, style.SelectableTextAlign, &bb); + + // Automatically close popups + if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(g.LastItemData.InFlags & ImGuiItemFlags_SelectableDontClosePopup)) + CloseCurrentPopup(); + + if (disabled_item && !disabled_global) + EndDisabled(); + + IMGUI_TEST_ENGINE_ITEM_INFO(id, label, g.LastItemData.StatusFlags); + return pressed; //-V1020 + } + + void IGFD::KeyExplorerFeature::prStartFlashItem(size_t vIdx) + { + prFlashAlpha = 1.0f; + prFlashedItem = vIdx; + } + + bool IGFD::KeyExplorerFeature::prBeginFlashItem(size_t vIdx) + { + bool res = false; + + if (prFlashedItem == vIdx && + std::abs(prFlashAlpha - 0.0f) > 0.00001f) + { + prFlashAlpha -= prFlashAlphaAttenInSecs * ImGui::GetIO().DeltaTime; + if (prFlashAlpha < 0.0f) prFlashAlpha = 0.0f; + + ImVec4 hov = ImGui::GetStyleColorVec4(ImGuiCol_HeaderHovered); + hov.w = prFlashAlpha; + ImGui::PushStyleColor(ImGuiCol_HeaderHovered, hov); + res = true; + } + + return res; + } + + void IGFD::KeyExplorerFeature::prEndFlashItem() + { + ImGui::PopStyleColor(); + } + + void IGFD::KeyExplorerFeature::SetFlashingAttenuationInSeconds(float vAttenValue) + { + prFlashAlphaAttenInSecs = 1.0f / ImMax(vAttenValue, 0.01f); + } +#endif // USE_EXPLORATION_BY_KEYS + + ///////////////////////////////////////////////////////////////////////////////////// + //// FILE DIALOG CONSTRUCTOR / DESTRUCTOR /////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////// + + IGFD::FileDialog::FileDialog() : BookMarkFeature(), KeyExplorerFeature(), ThumbnailFeature() {} + IGFD::FileDialog::~FileDialog() = default; + + ////////////////////////////////////////////////////////////////////////////////////////////////// + ///// FILE DIALOG STANDARD DIALOG //////////////////////////////////////////////////////////////// + ////////////////////////////////////////////////////////////////////////////////////////////////// + + // path and fileNameExt can be specified + void IGFD::FileDialog::OpenDialog( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vPath, + const std::string& vFileName, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + prFileDialogInternal.ResetForNewDialog(); + + prFileDialogInternal.puDLGkey = vKey; + prFileDialogInternal.puDLGtitle = vTitle; + prFileDialogInternal.puDLGuserDatas = vUserDatas; + prFileDialogInternal.puDLGflags = vFlags; + prFileDialogInternal.puDLGoptionsPane = nullptr; + prFileDialogInternal.puDLGoptionsPaneWidth = 0.0f; + prFileDialogInternal.puDLGmodal = false; + + prFileDialogInternal.puFilterManager.puDLGdefaultExt.clear(); + prFileDialogInternal.puFilterManager.ParseFilters(vFilters); + + prFileDialogInternal.puFileManager.puDLGDirectoryMode = (vFilters == nullptr); + if (vPath.empty()) + prFileDialogInternal.puFileManager.puDLGpath = prFileDialogInternal.puFileManager.GetCurrentPath(); + else + prFileDialogInternal.puFileManager.puDLGpath = vPath; + prFileDialogInternal.puFileManager.SetCurrentPath(vPath); + prFileDialogInternal.puFileManager.puDLGcountSelectionMax = (size_t)vCountSelectionMax; + prFileDialogInternal.puFileManager.SetDefaultFileName(vFileName); + + prFileDialogInternal.puFileManager.ClearAll(); + + prFileDialogInternal.puShowDialog = true; // open dialog + } + + // path and filename are obtained from filePathName + void IGFD::FileDialog::OpenDialog( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vFilePathName, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + prFileDialogInternal.ResetForNewDialog(); + + prFileDialogInternal.puDLGkey = vKey; + prFileDialogInternal.puDLGtitle = vTitle; + prFileDialogInternal.puDLGoptionsPane = nullptr; + prFileDialogInternal.puDLGoptionsPaneWidth = 0.0f; + prFileDialogInternal.puDLGuserDatas = vUserDatas; + prFileDialogInternal.puDLGflags = vFlags; + prFileDialogInternal.puDLGmodal = false; + + auto ps = IGFD::Utils::ParsePathFileName(vFilePathName); + if (ps.isOk) + { + prFileDialogInternal.puFileManager.puDLGpath = ps.path; + prFileDialogInternal.puFileManager.SetDefaultFileName(vFilePathName); + prFileDialogInternal.puFilterManager.puDLGdefaultExt = "." + ps.ext; + } + else + { + prFileDialogInternal.puFileManager.puDLGpath = prFileDialogInternal.puFileManager.GetCurrentPath(); + prFileDialogInternal.puFileManager.SetDefaultFileName(""); + prFileDialogInternal.puFilterManager.puDLGdefaultExt.clear(); + } + + prFileDialogInternal.puFilterManager.ParseFilters(vFilters); + prFileDialogInternal.puFilterManager.SetSelectedFilterWithExt( + prFileDialogInternal.puFilterManager.puDLGdefaultExt); + + prFileDialogInternal.puFileManager.SetCurrentPath(prFileDialogInternal.puFileManager.puDLGpath); + + prFileDialogInternal.puFileManager.puDLGDirectoryMode = (vFilters == nullptr); + prFileDialogInternal.puFileManager.puDLGcountSelectionMax = vCountSelectionMax; //-V101 + + prFileDialogInternal.puFileManager.ClearAll(); + + prFileDialogInternal.puShowDialog = true; + } + + // with pane + // path and fileNameExt can be specified + void IGFD::FileDialog::OpenDialog( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vPath, + const std::string& vFileName, + const PaneFun& vSidePane, + const float& vSidePaneWidth, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + prFileDialogInternal.ResetForNewDialog(); + + prFileDialogInternal.puDLGkey = vKey; + prFileDialogInternal.puDLGtitle = vTitle; + prFileDialogInternal.puDLGuserDatas = vUserDatas; + prFileDialogInternal.puDLGflags = vFlags; + prFileDialogInternal.puDLGoptionsPane = vSidePane; + prFileDialogInternal.puDLGoptionsPaneWidth = vSidePaneWidth; + prFileDialogInternal.puDLGmodal = false; + + prFileDialogInternal.puFilterManager.puDLGdefaultExt.clear(); + prFileDialogInternal.puFilterManager.ParseFilters(vFilters); + + prFileDialogInternal.puFileManager.puDLGcountSelectionMax = (size_t)vCountSelectionMax; + prFileDialogInternal.puFileManager.puDLGDirectoryMode = (vFilters == nullptr); + if (vPath.empty()) + prFileDialogInternal.puFileManager.puDLGpath = prFileDialogInternal.puFileManager.GetCurrentPath(); + else + prFileDialogInternal.puFileManager.puDLGpath = vPath; + + prFileDialogInternal.puFileManager.SetCurrentPath(prFileDialogInternal.puFileManager.puDLGpath); + + prFileDialogInternal.puFileManager.SetDefaultFileName(vFileName); + + prFileDialogInternal.puFileManager.ClearAll(); + + prFileDialogInternal.puShowDialog = true; // open dialog + } + + // with pane + // path and filename are obtained from filePathName + void IGFD::FileDialog::OpenDialog( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vFilePathName, + const PaneFun& vSidePane, + const float& vSidePaneWidth, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + prFileDialogInternal.ResetForNewDialog(); + + prFileDialogInternal.puDLGkey = vKey; + prFileDialogInternal.puDLGtitle = vTitle; + prFileDialogInternal.puDLGoptionsPane = vSidePane; + prFileDialogInternal.puDLGoptionsPaneWidth = vSidePaneWidth; + prFileDialogInternal.puDLGuserDatas = vUserDatas; + prFileDialogInternal.puDLGflags = vFlags; + prFileDialogInternal.puDLGmodal = false; + + auto ps = IGFD::Utils::ParsePathFileName(vFilePathName); + if (ps.isOk) + { + prFileDialogInternal.puFileManager.puDLGpath = ps.path; + prFileDialogInternal.puFileManager.SetDefaultFileName(vFilePathName); + prFileDialogInternal.puFilterManager.puDLGdefaultExt = "." + ps.ext; + } + else + { + prFileDialogInternal.puFileManager.puDLGpath = prFileDialogInternal.puFileManager.GetCurrentPath(); + prFileDialogInternal.puFileManager.SetDefaultFileName(""); + prFileDialogInternal.puFilterManager.puDLGdefaultExt.clear(); + } + + prFileDialogInternal.puFileManager.SetCurrentPath(prFileDialogInternal.puFileManager.puDLGpath); + + prFileDialogInternal.puFileManager.puDLGcountSelectionMax = vCountSelectionMax; //-V101 + prFileDialogInternal.puFileManager.puDLGDirectoryMode = (vFilters == nullptr); + prFileDialogInternal.puFilterManager.ParseFilters(vFilters); + prFileDialogInternal.puFilterManager.SetSelectedFilterWithExt( + prFileDialogInternal.puFilterManager.puDLGdefaultExt); + + prFileDialogInternal.puFileManager.ClearAll(); + + prFileDialogInternal.puShowDialog = true; + } + + ////////////////////////////////////////////////////////////////////////////////////////////////// + ///// FILE DIALOG MODAL DIALOG /////////////////////////////////////////////////////////////////// + ////////////////////////////////////////////////////////////////////////////////////////////////// + + void IGFD::FileDialog::OpenModal( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vPath, + const std::string& vFileName, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + OpenDialog( + vKey, vTitle, vFilters, + vPath, vFileName, + vCountSelectionMax, vUserDatas, vFlags); + + prFileDialogInternal.puDLGmodal = true; + } + + void IGFD::FileDialog::OpenModal( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vFilePathName, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + OpenDialog( + vKey, vTitle, vFilters, + vFilePathName, + vCountSelectionMax, vUserDatas, vFlags); + + prFileDialogInternal.puDLGmodal = true; + } + + // with pane + // path and fileNameExt can be specified + void IGFD::FileDialog::OpenModal( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vPath, + const std::string& vFileName, + const PaneFun& vSidePane, + const float& vSidePaneWidth, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + OpenDialog( + vKey, vTitle, vFilters, + vPath, vFileName, + vSidePane, vSidePaneWidth, + vCountSelectionMax, vUserDatas, vFlags); + + prFileDialogInternal.puDLGmodal = true; + } + + // with pane + // path and filename are obtained from filePathName + void IGFD::FileDialog::OpenModal( + const std::string& vKey, + const std::string& vTitle, + const char* vFilters, + const std::string& vFilePathName, + const PaneFun& vSidePane, + const float& vSidePaneWidth, + const int& vCountSelectionMax, + UserDatas vUserDatas, + ImGuiFileDialogFlags vFlags) + { + if (prFileDialogInternal.puShowDialog) // if already opened, quit + return; + + OpenDialog( + vKey, vTitle, vFilters, + vFilePathName, + vSidePane, vSidePaneWidth, + vCountSelectionMax, vUserDatas, vFlags); + + prFileDialogInternal.puDLGmodal = true; + } + + ////////////////////////////////////////////////////////////////////////////////////////////////// + ///// FILE DIALOG DISPLAY FUNCTION /////////////////////////////////////////////////////////////// + ////////////////////////////////////////////////////////////////////////////////////////////////// + + bool IGFD::FileDialog::Display(const std::string& vKey, ImGuiWindowFlags vFlags, ImVec2 vMinSize, ImVec2 vMaxSize) + { + bool res = false; + + if (prFileDialogInternal.puShowDialog && prFileDialogInternal.puDLGkey == vKey) + { + if (prFileDialogInternal.puUseCustomLocale) + setlocale(prFileDialogInternal.puLocaleCategory, prFileDialogInternal.puLocaleBegin.c_str()); + + auto& fdFile = prFileDialogInternal.puFileManager; + auto& fdFilter = prFileDialogInternal.puFilterManager; + + static ImGuiWindowFlags flags; + + // to be sure than only one dialog is displayed per frame + ImGuiContext& g = *GImGui; + if (g.FrameCount == prFileDialogInternal.puLastImGuiFrameCount) // one instance was displayed this frame before for this key +> quit + return res; + prFileDialogInternal.puLastImGuiFrameCount = g.FrameCount; // mark this instance as used this frame + + std::string name = prFileDialogInternal.puDLGtitle + "##" + prFileDialogInternal.puDLGkey; + if (prFileDialogInternal.puName != name) + { + fdFile.ClearComposer(); + fdFile.ClearFileLists(); + flags = vFlags; + } + + NewFrame(); + +#ifdef IMGUI_HAS_VIEWPORT + if (!ImGui::GetIO().ConfigViewportsNoDecoration) + { + // https://github.com/ocornut/imgui/issues/4534 + ImGuiWindowClass window_class; + window_class.ViewportFlagsOverrideClear = ImGuiViewportFlags_NoDecoration; + ImGui::SetNextWindowClass(&window_class); + } +#endif // IMGUI_HAS_VIEWPORT + + ImGui::SetNextWindowSizeConstraints(vMinSize, vMaxSize); + + bool beg = false; + if (prFileDialogInternal.puDLGmodal && + !prFileDialogInternal.puOkResultToConfirm) // disable modal because the confirm dialog for overwrite is a new modal + { + ImGui::OpenPopup(name.c_str()); + beg = ImGui::BeginPopupModal(name.c_str(), (bool*)nullptr, + flags | ImGuiWindowFlags_NoScrollbar); + } + else + { + beg = ImGui::Begin(name.c_str(), (bool*)nullptr, flags | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse); + } + if (beg) + { +#ifdef IMGUI_HAS_VIEWPORT + // if decoration is enabled we disable the resizing feature of imgui for avoid crash with SDL2 and GLFW3 + if (ImGui::GetIO().ConfigViewportsNoDecoration) + { + flags = vFlags; + } + else + { + auto win = ImGui::GetCurrentWindowRead(); + if (win->Viewport->Idx != 0) + flags |= ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoTitleBar; + else + flags = vFlags; + } +#endif // IMGUI_HAS_VIEWPORT + + prFileDialogInternal.puName = name; //-V820 + puAnyWindowsHovered |= ImGui::IsWindowHovered(); + + if (fdFile.puDLGpath.empty()) + fdFile.puDLGpath = "."; // defaut path is '.' + + fdFilter.SetDefaultFilterIfNotDefined(); + + // init list of files + if (fdFile.IsFileListEmpty() && !fdFile.puShowDrives) + { + IGFD::Utils::ReplaceString(fdFile.puDLGDefaultFileName, fdFile.puDLGpath, ""); // local path + if (!fdFile.puDLGDefaultFileName.empty()) + { + fdFile.SetDefaultFileName(fdFile.puDLGDefaultFileName); + fdFilter.SetSelectedFilterWithExt(fdFilter.puDLGdefaultExt); + } + else if (fdFile.puDLGDirectoryMode) // directory mode + fdFile.SetDefaultFileName("."); + fdFile.ScanDir(prFileDialogInternal, fdFile.puDLGpath); + } + + // draw dialog parts + prDrawHeader(); // bookmark, directory, path + prDrawContent(); // bookmark, files view, side pane + res = prDrawFooter(); // file field, filter combobox, ok/cancel buttons + + EndFrame(); + + // for display in dialog center, the confirm to overwrite dlg + prFileDialogInternal.puDialogCenterPos = ImGui::GetCurrentWindowRead()->ContentRegionRect.GetCenter(); + + // when the confirm to overwrite dialog will appear we need to + // disable the modal mode of the main file dialog + // see prOkResultToConfirm under + if (prFileDialogInternal.puDLGmodal && + !prFileDialogInternal.puOkResultToConfirm) + ImGui::EndPopup(); + } + + // same things here regarding prOkResultToConfirm + if (!prFileDialogInternal.puDLGmodal || prFileDialogInternal.puOkResultToConfirm) + ImGui::End(); + + // confirm the result and show the confirm to overwrite dialog if needed + res = prConfirm_Or_OpenOverWriteFileDialog_IfNeeded(res, vFlags); + + if (prFileDialogInternal.puUseCustomLocale) + setlocale(prFileDialogInternal.puLocaleCategory, prFileDialogInternal.puLocaleEnd.c_str()); + } + + return res; + } + + void IGFD::FileDialog::NewFrame() + { + prFileDialogInternal.NewFrame(); + NewThumbnailFrame(prFileDialogInternal); + } + + void IGFD::FileDialog::EndFrame() + { + EndThumbnailFrame(prFileDialogInternal); + prFileDialogInternal.EndFrame(); + + } + void IGFD::FileDialog::QuitFrame() + { + QuitThumbnailFrame(prFileDialogInternal); + } + + void IGFD::FileDialog::prDrawHeader() + { +#ifdef USE_BOOKMARK + prDrawBookmarkButton(); + ImGui::SameLine(); +#endif // USE_BOOKMARK + + prFileDialogInternal.puFileManager.DrawDirectoryCreation(prFileDialogInternal); + ImGui::SameLine(); + ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical); + ImGui::SameLine(); + prFileDialogInternal.puFileManager.DrawPathComposer(prFileDialogInternal); + +#ifdef USE_THUMBNAILS + if (!(prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_DisableThumbnailMode)) + { + prDrawDisplayModeToolBar(); + ImGui::SameLine(); + ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical); + ImGui::SameLine(); + } +#endif // USE_THUMBNAILS + + prFileDialogInternal.puSearchManager.DrawSearchBar(prFileDialogInternal); + } + + void IGFD::FileDialog::prDrawContent() + { + ImVec2 size = ImGui::GetContentRegionAvail() - ImVec2(0.0f, prFileDialogInternal.puFooterHeight); + +#ifdef USE_BOOKMARK + if (prBookmarkPaneShown) + { + //size.x -= prBookmarkWidth; + float otherWidth = size.x - prBookmarkWidth; + ImGui::PushID("##splitterbookmark"); + IGFD::Utils::Splitter(true, 4.0f, + &prBookmarkWidth, &otherWidth, 10.0f, + 10.0f + prFileDialogInternal.puDLGoptionsPaneWidth, size.y); + ImGui::PopID(); + size.x -= otherWidth; + prDrawBookmarkPane(prFileDialogInternal, size); + ImGui::SameLine(); + } +#endif // USE_BOOKMARK + + size.x = ImGui::GetContentRegionAvail().x - prFileDialogInternal.puDLGoptionsPaneWidth; + + if (prFileDialogInternal.puDLGoptionsPane) + { + ImGui::PushID("##splittersidepane"); + IGFD::Utils::Splitter(true, 4.0f, &size.x, &prFileDialogInternal.puDLGoptionsPaneWidth, 10.0f, 10.0f, size.y); + ImGui::PopID(); + } + +#ifdef USE_THUMBNAILS + if (prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_DisableThumbnailMode) + { + prDrawFileListView(size); + } + else + { + switch (prDisplayMode) + { + case DisplayModeEnum::FILE_LIST: + prDrawFileListView(size); + break; + case DisplayModeEnum::THUMBNAILS_LIST: + prDrawThumbnailsListView(size); + break; + case DisplayModeEnum::THUMBNAILS_GRID: + prDrawThumbnailsGridView(size); + } + } +#else + prDrawFileListView(size); +#endif // USE_THUMBNAILS + + if (prFileDialogInternal.puDLGoptionsPane) + { + prDrawSidePane(size.y); + } + } + + bool IGFD::FileDialog::prDrawFooter() + { + auto& fdFile = prFileDialogInternal.puFileManager; + + float posY = ImGui::GetCursorPos().y; // height of last bar calc + + if (!fdFile.puDLGDirectoryMode) + ImGui::Text(fileNameString); + else // directory chooser + ImGui::Text(dirNameString); + + ImGui::SameLine(); + + // Input file fields + float width = ImGui::GetContentRegionAvail().x; + if (!fdFile.puDLGDirectoryMode) + width -= FILTER_COMBO_WIDTH; + ImGui::PushItemWidth(width); + ImGui::InputText("##FileName", fdFile.puFileNameBuffer, MAX_FILE_DIALOG_NAME_BUFFER); + if (ImGui::GetItemID() == ImGui::GetActiveID()) + prFileDialogInternal.puFileInputIsActive = true; + ImGui::PopItemWidth(); + + // combobox of filters + prFileDialogInternal.puFilterManager.DrawFilterComboBox(prFileDialogInternal); + + bool res = false; + + // OK Button + if (prFileDialogInternal.puCanWeContinue && strlen(fdFile.puFileNameBuffer)) + { + if (IMGUI_BUTTON(okButtonString "##validationdialog")) + { + prFileDialogInternal.puIsOk = true; + res = true; + } + + ImGui::SameLine(); + } + + // Cancel Button + if (IMGUI_BUTTON(cancelButtonString "##validationdialog") || + prFileDialogInternal.puNeedToExitDialog) // dialog exit asked + { + prFileDialogInternal.puIsOk = false; + res = true; + } + + prFileDialogInternal.puFooterHeight = ImGui::GetCursorPosY() - posY; + + return res; + } + + bool IGFD::FileDialog::prSelectableItem(int vidx, std::shared_ptr vInfos, bool vSelected, const char* vFmt, ...) + { + if (!vInfos.use_count()) + return false; + + auto& fdi = prFileDialogInternal.puFileManager; + + static ImGuiSelectableFlags selectableFlags = ImGuiSelectableFlags_AllowDoubleClick | + ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_SpanAvailWidth; + + va_list args; + va_start(args, vFmt); + vsnprintf(fdi.puVariadicBuffer, MAX_FILE_DIALOG_NAME_BUFFER, vFmt, args); + va_end(args); + + float h = 0.0f; +#ifdef USE_THUMBNAILS + if (prDisplayMode == DisplayModeEnum::THUMBNAILS_LIST) + h = DisplayMode_ThumbailsList_ImageHeight; +#endif // USE_THUMBNAILS +#ifdef USE_EXPLORATION_BY_KEYS + bool flashed = prBeginFlashItem((size_t)vidx); + bool res = prFlashableSelectable(fdi.puVariadicBuffer, vSelected, selectableFlags, + flashed, ImVec2(-1.0f, h)); + if (flashed) + prEndFlashItem(); +#else // USE_EXPLORATION_BY_KEYS + (void)vidx; // remove a warnings ofr unused var + + bool res = ImGui::Selectable(fdi.puVariadicBuffer, vSelected, selectableFlags, ImVec2(-1.0f, h)); +#endif // USE_EXPLORATION_BY_KEYS + if (res) + { + if (vInfos->fileType == 'd') + { + // nav system, selectebale cause open directory or select directory + if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) + { + if (fdi.puDLGDirectoryMode) // directory chooser + { + fdi.SelectFileName(prFileDialogInternal, vInfos); + } + else + { + fdi.puPathClicked = fdi.SelectDirectory(vInfos); + } + } + else // no nav system => classic behavior + { + if (ImGui::IsMouseDoubleClicked(0)) // 0 -> left mouse button double click + { + fdi.puPathClicked = fdi.SelectDirectory(vInfos); + } + else if (fdi.puDLGDirectoryMode) // directory chooser + { + fdi.SelectFileName(prFileDialogInternal, vInfos); + } + } + + return true; // needToBreakTheloop + } + else + { + fdi.SelectFileName(prFileDialogInternal, vInfos); + } + } + + return false; + } + + void IGFD::FileDialog::prBeginFileColorIconStyle(std::shared_ptr vFileInfos, bool& vOutShowColor, std::string& vOutStr, ImFont** vOutFont) + { + vOutStr.clear(); + vOutShowColor = false; + + if (vFileInfos->fileStyle.use_count()) //-V807 //-V522 + { + vOutShowColor = true; + + *vOutFont = vFileInfos->fileStyle->font; + } + + if (vOutShowColor && !vFileInfos->fileStyle->icon.empty()) vOutStr = vFileInfos->fileStyle->icon; + else if (vFileInfos->fileType == 'd') vOutStr = dirEntryString; + else if (vFileInfos->fileType == 'l') vOutStr = linkEntryString; + else if (vFileInfos->fileType == 'f') vOutStr = fileEntryString; + + vOutStr += " " + vFileInfos->fileNameExt; + + if (vOutShowColor) + ImGui::PushStyleColor(ImGuiCol_Text, vFileInfos->fileStyle->color); + if (*vOutFont) + ImGui::PushFont(*vOutFont); + } + + void IGFD::FileDialog::prEndFileColorIconStyle(const bool& vShowColor, ImFont* vFont) + { + if (vFont) + ImGui::PopFont(); + if (vShowColor) + ImGui::PopStyleColor(); + } + + void IGFD::FileDialog::prDrawFileListView(ImVec2 vSize) + { + auto& fdi = prFileDialogInternal.puFileManager; + + ImGui::PushID(this); + + static ImGuiTableFlags flags = ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_RowBg | + ImGuiTableFlags_Hideable | ImGuiTableFlags_ScrollY | + ImGuiTableFlags_NoHostExtendY +#ifndef USE_CUSTOM_SORTING_ICON + | ImGuiTableFlags_Sortable +#endif // USE_CUSTOM_SORTING_ICON + ; + auto listViewID = ImGui::GetID("##FileDialog_fileTable"); + if (ImGui::BeginTableEx("##FileDialog_fileTable", listViewID, 4, flags, vSize, 0.0f)) //-V112 + { + ImGui::TableSetupScrollFreeze(0, 1); // Make header always visible + ImGui::TableSetupColumn(fdi.puHeaderFileName.c_str(), ImGuiTableColumnFlags_WidthStretch, -1, 0); + ImGui::TableSetupColumn(fdi.puHeaderFileType.c_str(), ImGuiTableColumnFlags_WidthFixed | + ((prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_HideColumnType) ? ImGuiTableColumnFlags_DefaultHide : 0), -1, 1); + ImGui::TableSetupColumn(fdi.puHeaderFileSize.c_str(), ImGuiTableColumnFlags_WidthFixed | + ((prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_HideColumnSize) ? ImGuiTableColumnFlags_DefaultHide : 0), -1, 2); + ImGui::TableSetupColumn(fdi.puHeaderFileDate.c_str(), ImGuiTableColumnFlags_WidthFixed | + ((prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_HideColumnDate) ? ImGuiTableColumnFlags_DefaultHide : 0), -1, 3); + +#ifndef USE_CUSTOM_SORTING_ICON + // Sort our data if sort specs have been changed! + if (ImGuiTableSortSpecs* sorts_specs = ImGui::TableGetSortSpecs()) + { + if (sorts_specs->SpecsDirty && !fdi.IsFileListEmpty()) + { + if (sorts_specs->Specs->ColumnUserID == 0) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_FILENAME, true); + else if (sorts_specs->Specs->ColumnUserID == 1) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_TYPE, true); + else if (sorts_specs->Specs->ColumnUserID == 2) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_SIZE, true); + else //if (sorts_specs->Specs->ColumnUserID == 3) => alwayd true for the moment, to uncomment if we add a fourth column + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_DATE, true); + + sorts_specs->SpecsDirty = false; + } + } + + ImGui::TableHeadersRow(); +#else // USE_CUSTOM_SORTING_ICON + ImGui::TableNextRow(ImGuiTableRowFlags_Headers); + for (int column = 0; column < 4; column++) //-V112 + { + ImGui::TableSetColumnIndex(column); + const char* column_name = ImGui::TableGetColumnName(column); // Retrieve name passed to TableSetupColumn() + ImGui::PushID(column); + ImGui::TableHeader(column_name); + ImGui::PopID(); + if (ImGui::IsItemClicked()) + { + if (column == 0) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_FILENAME, true); + else if (column == 1) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_TYPE, true); + else if (column == 2) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_SIZE, true); + else //if (column == 3) => alwayd true for the moment, to uncomment if we add a fourth column + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_DATE, true); + } + } +#endif // USE_CUSTOM_SORTING_ICON + if (!fdi.IsFilteredListEmpty()) + { + std::string _str; + ImFont* _font = nullptr; + bool _showColor = false; + + prFileListClipper.Begin((int)fdi.GetFilteredListSize(), ImGui::GetTextLineHeightWithSpacing()); + while (prFileListClipper.Step()) + { + for (int i = prFileListClipper.DisplayStart; i < prFileListClipper.DisplayEnd; i++) + { + if (i < 0) continue; + + auto infos = fdi.GetFilteredFileAt((size_t)i); + if (!infos.use_count()) + continue; + + prBeginFileColorIconStyle(infos, _showColor, _str, &_font); + + bool selected = fdi.IsFileNameSelected(infos->fileNameExt); // found + + ImGui::TableNextRow(); + + bool needToBreakTheloop = false; + + if (ImGui::TableNextColumn()) // file name + { + needToBreakTheloop = prSelectableItem(i, infos, selected, _str.c_str()); + } + if (ImGui::TableNextColumn()) // file type + { + ImGui::Text("%s", infos->fileExt.c_str()); + } + if (ImGui::TableNextColumn()) // file size + { + if (infos->fileType != 'd') + { + ImGui::Text("%s ", infos->formatedFileSize.c_str()); + } + else + { + ImGui::Text("%s",""); + } + } + if (ImGui::TableNextColumn()) // file date + time + { + ImGui::Text("%s", infos->fileModifDate.c_str()); + } + + prEndFileColorIconStyle(_showColor, _font); + + if (needToBreakTheloop) + break; + } + } + prFileListClipper.End(); + } + +#ifdef USE_EXPLORATION_BY_KEYS + if (!fdi.puInputPathActivated) + { + prLocateByInputKey(prFileDialogInternal); + prExploreWithkeys(prFileDialogInternal, listViewID); + } +#endif // USE_EXPLORATION_BY_KEYS + + ImGuiContext& g = *GImGui; + if (g.LastActiveId - 1 == listViewID || g.LastActiveId == listViewID) + { + prFileDialogInternal.puFileListViewIsActive = true; + } + + ImGui::EndTable(); + } + + ImGui::PopID(); + } + +#ifdef USE_THUMBNAILS + void IGFD::FileDialog::prDrawThumbnailsListView(ImVec2 vSize) + { + auto& fdi = prFileDialogInternal.puFileManager; + + ImGui::PushID(this); + + static ImGuiTableFlags flags = ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_RowBg | + ImGuiTableFlags_Hideable | ImGuiTableFlags_ScrollY | + ImGuiTableFlags_NoHostExtendY +#ifndef USE_CUSTOM_SORTING_ICON + | ImGuiTableFlags_Sortable +#endif // USE_CUSTOM_SORTING_ICON + ; + auto listViewID = ImGui::GetID("##FileDialog_fileTable"); + if (ImGui::BeginTableEx("##FileDialog_fileTable", listViewID, 5, flags, vSize, 0.0f)) + { + ImGui::TableSetupScrollFreeze(0, 1); // Make header always visible + ImGui::TableSetupColumn(fdi.puHeaderFileName.c_str(), ImGuiTableColumnFlags_WidthStretch, -1, 0); + ImGui::TableSetupColumn(fdi.puHeaderFileType.c_str(), ImGuiTableColumnFlags_WidthFixed | + ((prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_HideColumnType) ? ImGuiTableColumnFlags_DefaultHide : 0), -1, 1); + ImGui::TableSetupColumn(fdi.puHeaderFileSize.c_str(), ImGuiTableColumnFlags_WidthFixed | + ((prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_HideColumnSize) ? ImGuiTableColumnFlags_DefaultHide : 0), -1, 2); + ImGui::TableSetupColumn(fdi.puHeaderFileDate.c_str(), ImGuiTableColumnFlags_WidthFixed | + ((prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_HideColumnDate) ? ImGuiTableColumnFlags_DefaultHide : 0), -1, 3); + // not needed to have an option for hide the thumbnails since this is why this view is used + ImGui::TableSetupColumn(fdi.puHeaderFileThumbnails.c_str(), ImGuiTableColumnFlags_WidthFixed, -1, 4); //-V112 + +#ifndef USE_CUSTOM_SORTING_ICON + // Sort our data if sort specs have been changed! + if (ImGuiTableSortSpecs* sorts_specs = ImGui::TableGetSortSpecs()) + { + if (sorts_specs->SpecsDirty && !fdi.IsFileListEmpty()) + { + if (sorts_specs->Specs->ColumnUserID == 0) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_FILENAME, true); + else if (sorts_specs->Specs->ColumnUserID == 1) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_TYPE, true); + else if (sorts_specs->Specs->ColumnUserID == 2) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_SIZE, true); + else if (sorts_specs->Specs->ColumnUserID == 3) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_DATE, true); + else // if (sorts_specs->Specs->ColumnUserID == 4) = > always true for the moment, to uncomment if we add another column + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_THUMBNAILS, true); + sorts_specs->SpecsDirty = false; + } + } + + ImGui::TableHeadersRow(); +#else // USE_CUSTOM_SORTING_ICON + ImGui::TableNextRow(ImGuiTableRowFlags_Headers); + for (int column = 0; column < 5; column++) + { + ImGui::TableSetColumnIndex(column); + const char* column_name = ImGui::TableGetColumnName(column); // Retrieve name passed to TableSetupColumn() + ImGui::PushID(column); + ImGui::TableHeader(column_name); + ImGui::PopID(); + if (ImGui::IsItemClicked()) + { + if (column == 0) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_FILENAME, true); + else if (column == 1) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_TYPE, true); + else if (column == 2) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_SIZE, true); + else if (column == 3) + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_DATE, true); + else // if (column == 4) = > always true for the moment, to uncomment if we add another column + fdi.SortFields(prFileDialogInternal, IGFD::FileManager::SortingFieldEnum::FIELD_THUMBNAILS, true); + } + } +#endif // USE_CUSTOM_SORTING_ICON + if (!fdi.IsFilteredListEmpty()) + { + std::string _str; + ImFont* _font = nullptr; + bool _showColor = false; + + ImGuiContext& g = *GImGui; + const float itemHeight = ImMax(g.FontSize, DisplayMode_ThumbailsList_ImageHeight) + g.Style.ItemSpacing.y; + + prFileListClipper.Begin((int)fdi.GetFilteredListSize(), itemHeight); + while (prFileListClipper.Step()) + { + for (int i = prFileListClipper.DisplayStart; i < prFileListClipper.DisplayEnd; i++) + { + if (i < 0) continue; + + auto infos = fdi.GetFilteredFileAt((size_t)i); + if (!infos.use_count()) + continue; + + prBeginFileColorIconStyle(infos, _showColor, _str, &_font); + + bool selected = fdi.IsFileNameSelected(infos->fileNameExt); // found + + ImGui::TableNextRow(); + + bool needToBreakTheloop = false; + + if (ImGui::TableNextColumn()) // file name + { + needToBreakTheloop = prSelectableItem(i, infos, selected, _str.c_str()); + } + if (ImGui::TableNextColumn()) // file type + { + ImGui::Text("%s", infos->fileExt.c_str()); + } + if (ImGui::TableNextColumn()) // file size + { + if (infos->fileType != 'd') + { + ImGui::Text("%s ", infos->formatedFileSize.c_str()); + } + else + { + ImGui::Text(""); + } + } + if (ImGui::TableNextColumn()) // file date + time + { + ImGui::Text("%s", infos->fileModifDate.c_str()); + } + if (ImGui::TableNextColumn()) // file thumbnails + { + auto th = &infos->thumbnailInfo; + + if (!th->isLoadingOrLoaded) + { + prAddThumbnailToLoad(infos); + } + if (th->isReadyToDisplay && + th->textureID) + { + ImGui::Image((ImTextureID)th->textureID, + ImVec2((float)th->textureWidth, + (float)th->textureHeight)); + } + } + + prEndFileColorIconStyle(_showColor, _font); + + if (needToBreakTheloop) + break; + } + } + prFileListClipper.End(); + } + +#ifdef USE_EXPLORATION_BY_KEYS + if (!fdi.puInputPathActivated) + { + prLocateByInputKey(prFileDialogInternal); + prExploreWithkeys(prFileDialogInternal, listViewID); + } +#endif // USE_EXPLORATION_BY_KEYS + + ImGuiContext& g = *GImGui; + if (g.LastActiveId - 1 == listViewID || g.LastActiveId == listViewID) + { + prFileDialogInternal.puFileListViewIsActive = true; + } + + ImGui::EndTable(); + } + + ImGui::PopID(); + } + + void IGFD::FileDialog::prDrawThumbnailsGridView(ImVec2 vSize) + { + if (ImGui::BeginChild("##thumbnailsGridsFiles", vSize)) + { + // todo + } + + ImGui::EndChild(); + } + +#endif + + void IGFD::FileDialog::prDrawSidePane(float vHeight) + { + ImGui::SameLine(); + + ImGui::BeginChild("##FileTypes", ImVec2(0, vHeight)); + + prFileDialogInternal.puDLGoptionsPane( + prFileDialogInternal.puFilterManager.GetSelectedFilter().filter.c_str(), + prFileDialogInternal.puDLGuserDatas, &prFileDialogInternal.puCanWeContinue); + + ImGui::EndChild(); + } + + void IGFD::FileDialog::Close() + { + prFileDialogInternal.puDLGkey.clear(); + prFileDialogInternal.puShowDialog = false; + } + + bool IGFD::FileDialog::WasOpenedThisFrame(const std::string& vKey) const + { + bool res = prFileDialogInternal.puShowDialog && prFileDialogInternal.puDLGkey == vKey; + if (res) + { + ImGuiContext& g = *GImGui; + res &= prFileDialogInternal.puLastImGuiFrameCount == g.FrameCount; // return true if a dialog was displayed in this frame + } + return res; + } + + bool IGFD::FileDialog::WasOpenedThisFrame() const + { + bool res = prFileDialogInternal.puShowDialog; + if (res) + { + ImGuiContext& g = *GImGui; + res &= prFileDialogInternal.puLastImGuiFrameCount == g.FrameCount; // return true if a dialog was displayed in this frame + } + return res; + } + + bool IGFD::FileDialog::IsOpened(const std::string& vKey) const + { + return (prFileDialogInternal.puShowDialog && prFileDialogInternal.puDLGkey == vKey); + } + + bool IGFD::FileDialog::IsOpened() const + { + return prFileDialogInternal.puShowDialog; + } + + std::string IGFD::FileDialog::GetOpenedKey() const + { + if (prFileDialogInternal.puShowDialog) + return prFileDialogInternal.puDLGkey; + return ""; + } + + std::string IGFD::FileDialog::GetFilePathName() + { + return prFileDialogInternal.puFileManager.GetResultingFilePathName(prFileDialogInternal); + } + + std::string IGFD::FileDialog::GetCurrentPath() + { + return prFileDialogInternal.puFileManager.GetResultingPath(); + } + + std::string IGFD::FileDialog::GetCurrentFileName() + { + return prFileDialogInternal.puFileManager.GetResultingFileName(prFileDialogInternal); + } + + std::string IGFD::FileDialog::GetCurrentFilter() + { + return prFileDialogInternal.puFilterManager.GetSelectedFilter().filter; + } + + std::map IGFD::FileDialog::GetSelection() + { + return prFileDialogInternal.puFileManager.GetResultingSelection(); + } + + UserDatas IGFD::FileDialog::GetUserDatas() const + { + return prFileDialogInternal.puDLGuserDatas; + } + + bool IGFD::FileDialog::IsOk() const + { + return prFileDialogInternal.puIsOk; + } + + void IGFD::FileDialog::SetFileStyle(const IGFD_FileStyleFlags& vFlags, const char* vCriteria, const FileStyle& vInfos) + { + prFileDialogInternal.puFilterManager.SetFileStyle(vFlags, vCriteria, vInfos); + } + + void IGFD::FileDialog::SetFileStyle(const IGFD_FileStyleFlags& vFlags, const char* vCriteria, const ImVec4& vColor, const std::string& vIcon, ImFont* vFont) + { + prFileDialogInternal.puFilterManager.SetFileStyle(vFlags, vCriteria, vColor, vIcon, vFont); + } + + bool IGFD::FileDialog::GetFileStyle(const IGFD_FileStyleFlags& vFlags, const std::string& vCriteria, ImVec4* vOutColor, std::string* vOutIcon, ImFont **vOutFont) + { + return prFileDialogInternal.puFilterManager.GetFileStyle(vFlags, vCriteria, vOutColor, vOutIcon, vOutFont); + } + + void IGFD::FileDialog::ClearFilesStyle() + { + prFileDialogInternal.puFilterManager.ClearFilesStyle(); + } + + void IGFD::FileDialog::SetLocales(const int& vLocaleCategory, const std::string& vLocaleBegin, const std::string& vLocaleEnd) + { + prFileDialogInternal.puUseCustomLocale = true; + prFileDialogInternal.puLocaleBegin = vLocaleBegin; + prFileDialogInternal.puLocaleEnd = vLocaleEnd; + } + + ////////////////////////////////////////////////////////////////////////////// + //// OVERWRITE DIALOG //////////////////////////////////////////////////////// + ////////////////////////////////////////////////////////////////////////////// + + bool IGFD::FileDialog::prConfirm_Or_OpenOverWriteFileDialog_IfNeeded(bool vLastAction, ImGuiWindowFlags vFlags) + { + // if confirmation => return true for confirm the overwrite et quit the dialog + // if cancel => return false && set IsOk to false for keep inside the dialog + + // if IsOk == false => return false for quit the dialog + if (!prFileDialogInternal.puIsOk && vLastAction) + { + QuitFrame(); + return true; + } + + // if IsOk == true && no check of overwrite => return true for confirm the dialog + if (prFileDialogInternal.puIsOk && vLastAction && !(prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_ConfirmOverwrite)) + { + QuitFrame(); + return true; + } + + // if IsOk == true && check of overwrite => return false and show confirm to overwrite dialog + if ((prFileDialogInternal.puOkResultToConfirm || (prFileDialogInternal.puIsOk && vLastAction)) && + (prFileDialogInternal.puDLGflags & ImGuiFileDialogFlags_ConfirmOverwrite)) + { + if (prFileDialogInternal.puIsOk) // catched only one time + { + if (!prFileDialogInternal.puFileManager.IsFileExist(GetFilePathName())) // not existing => quit dialog + { + QuitFrame(); + return true; + } + else // existing => confirm dialog to open + { + prFileDialogInternal.puIsOk = false; + prFileDialogInternal.puOkResultToConfirm = true; + } + } + + std::string name = OverWriteDialogTitleString "##" + prFileDialogInternal.puDLGtitle + prFileDialogInternal.puDLGkey + "OverWriteDialog"; + + bool res = false; + + ImGui::OpenPopup(name.c_str()); + if (ImGui::BeginPopupModal(name.c_str(), (bool*)0, + vFlags | ImGuiWindowFlags_AlwaysAutoResize | + ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove)) + { + ImGui::SetWindowPos(prFileDialogInternal.puDialogCenterPos - ImGui::GetWindowSize() * 0.5f); // next frame needed for GetWindowSize to work + + ImGui::Text("%s", OverWriteDialogMessageString); + + if (IMGUI_BUTTON(OverWriteDialogConfirmButtonString)) + { + prFileDialogInternal.puOkResultToConfirm = false; + prFileDialogInternal.puIsOk = true; + res = true; + ImGui::CloseCurrentPopup(); + } + + ImGui::SameLine(); + + if (IMGUI_BUTTON(OverWriteDialogCancelButtonString)) + { + prFileDialogInternal.puOkResultToConfirm = false; + prFileDialogInternal.puIsOk = false; + res = false; + ImGui::CloseCurrentPopup(); + } + + ImGui::EndPopup(); + } + + if (res) + { + QuitFrame(); + } + return res; + } + + return false; + } +} + +#endif // __cplusplus + +///////////////////////////////////////////////////////////////// +///// C Interface /////////////////////////////////////////////// +///////////////////////////////////////////////////////////////// + +// Return an initialized IGFD_Selection_Pair +IMGUIFILEDIALOG_API IGFD_Selection_Pair IGFD_Selection_Pair_Get(void) +{ + IGFD_Selection_Pair res = {}; + res.fileName = nullptr; + res.filePathName = nullptr; + return res; +} + +// destroy only the content of vSelection_Pair +IMGUIFILEDIALOG_API void IGFD_Selection_Pair_DestroyContent(IGFD_Selection_Pair* vSelection_Pair) +{ + if (vSelection_Pair) + { + delete[] vSelection_Pair->fileName; + delete[] vSelection_Pair->filePathName; + } +} + +// Return an initialized IGFD_Selection +IMGUIFILEDIALOG_API IGFD_Selection IGFD_Selection_Get(void) +{ + return { nullptr, 0U }; +} + +// destroy only the content of vSelection +IMGUIFILEDIALOG_API void IGFD_Selection_DestroyContent(IGFD_Selection* vSelection) +{ + if (vSelection) + { + if (vSelection->table) + { + for (size_t i = 0U; i < vSelection->count; i++) + { + IGFD_Selection_Pair_DestroyContent(&vSelection->table[i]); + } + delete[] vSelection->table; + } + vSelection->count = 0U; + } +} + +// create an instance of ImGuiFileDialog +IMGUIFILEDIALOG_API ImGuiFileDialog* IGFD_Create(void) +{ + return new ImGuiFileDialog(); +} + +// destroy the instance of ImGuiFileDialog +IMGUIFILEDIALOG_API void IGFD_Destroy(ImGuiFileDialog* vContext) +{ + if (vContext) + { + delete vContext; + vContext = nullptr; + } +} + +// standard dialog +IMGUIFILEDIALOG_API void IGFD_OpenDialog( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vPath, + const char* vFileName, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenDialog( + vKey, vTitle, vFilters, vPath, vFileName, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API void IGFD_OpenDialog2( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vFilePathName, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenDialog( + vKey, vTitle, vFilters, vFilePathName, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API void IGFD_OpenPaneDialog( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vPath, + const char* vFileName, + IGFD_PaneFun vSidePane, + const float vSidePaneWidth, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenDialog( + vKey, vTitle, vFilters, + vPath, vFileName, + vSidePane, vSidePaneWidth, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API void IGFD_OpenPaneDialog2( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vFilePathName, + IGFD_PaneFun vSidePane, + const float vSidePaneWidth, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenDialog( + vKey, vTitle, vFilters, + vFilePathName, + vSidePane, vSidePaneWidth, + vCountSelectionMax, vUserDatas, flags); + } +} + +// modal dialog +IMGUIFILEDIALOG_API void IGFD_OpenModal( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vPath, + const char* vFileName, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenModal( + vKey, vTitle, vFilters, vPath, vFileName, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API void IGFD_OpenModal2( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vFilePathName, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenModal( + vKey, vTitle, vFilters, vFilePathName, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API void IGFD_OpenPaneModal( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vPath, + const char* vFileName, + IGFD_PaneFun vSidePane, + const float vSidePaneWidth, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenModal( + vKey, vTitle, vFilters, + vPath, vFileName, + vSidePane, vSidePaneWidth, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API void IGFD_OpenPaneModal2( + ImGuiFileDialog* vContext, + const char* vKey, + const char* vTitle, + const char* vFilters, + const char* vFilePathName, + IGFD_PaneFun vSidePane, + const float vSidePaneWidth, + const int vCountSelectionMax, + void* vUserDatas, + ImGuiFileDialogFlags flags) +{ + if (vContext) + { + vContext->OpenModal( + vKey, vTitle, vFilters, + vFilePathName, + vSidePane, vSidePaneWidth, + vCountSelectionMax, vUserDatas, flags); + } +} + +IMGUIFILEDIALOG_API bool IGFD_DisplayDialog(ImGuiFileDialog* vContext, + const char* vKey, ImGuiWindowFlags vFlags, ImVec2 vMinSize, ImVec2 vMaxSize) +{ + if (vContext) + { + return vContext->Display(vKey, vFlags, vMinSize, vMaxSize); + } + + return false; +} + +IMGUIFILEDIALOG_API void IGFD_CloseDialog(ImGuiFileDialog* vContext) +{ + if (vContext) + { + vContext->Close(); + } +} + +IMGUIFILEDIALOG_API bool IGFD_IsOk(ImGuiFileDialog* vContext) +{ + if (vContext) + { + return vContext->IsOk(); + } + + return false; +} + +IMGUIFILEDIALOG_API bool IGFD_WasKeyOpenedThisFrame(ImGuiFileDialog* vContext, + const char* vKey) +{ + if (vContext) + { + vContext->WasOpenedThisFrame(vKey); + } + + return false; +} + +IMGUIFILEDIALOG_API bool IGFD_WasOpenedThisFrame(ImGuiFileDialog* vContext) +{ + if (vContext) + { + vContext->WasOpenedThisFrame(); + } + + return false; +} + +IMGUIFILEDIALOG_API bool IGFD_IsKeyOpened(ImGuiFileDialog* vContext, + const char* vCurrentOpenedKey) +{ + if (vContext) + { + vContext->IsOpened(vCurrentOpenedKey); + } + + return false; +} + +IMGUIFILEDIALOG_API bool IGFD_IsOpened(ImGuiFileDialog* vContext) +{ + if (vContext) + { + vContext->IsOpened(); + } + + return false; +} + +IMGUIFILEDIALOG_API IGFD_Selection IGFD_GetSelection(ImGuiFileDialog* vContext) +{ + IGFD_Selection res = IGFD_Selection_Get(); + + if (vContext) + { + auto sel = vContext->GetSelection(); + if (!sel.empty()) + { + res.count = sel.size(); + res.table = new IGFD_Selection_Pair[res.count]; + + size_t idx = 0U; + for (const auto& s : sel) + { + IGFD_Selection_Pair* pair = res.table + idx++; + + // fileNameExt + if (!s.first.empty()) + { + size_t siz = s.first.size() + 1U; + pair->fileName = new char[siz]; +#ifndef MSVC + strncpy(pair->fileName, s.first.c_str(), siz); +#else + strncpy_s(pair->fileName, siz, s.first.c_str(), siz); +#endif + pair->fileName[siz - 1U] = '\0'; + } + + // filePathName + if (!s.second.empty()) + { + size_t siz = s.first.size() + 1U; + pair->filePathName = new char[siz]; +#ifndef MSVC + strncpy(pair->filePathName, s.first.c_str(), siz); +#else + strncpy_s(pair->filePathName, siz, s.first.c_str(), siz); +#endif + pair->filePathName[siz - 1U] = '\0'; + } + } + + return res; + } + } + + return res; +} + +IMGUIFILEDIALOG_API char* IGFD_GetFilePathName(ImGuiFileDialog* vContext) +{ + char* res = nullptr; + + if (vContext) + { + auto s = vContext->GetFilePathName(); + if (!s.empty()) + { + size_t siz = s.size() + 1U; + res = new char[siz]; +#ifndef MSVC + strncpy(res, s.c_str(), siz); +#else + strncpy_s(res, siz, s.c_str(), siz); +#endif + res[siz - 1U] = '\0'; + } + } + + return res; +} + +IMGUIFILEDIALOG_API char* IGFD_GetCurrentFileName(ImGuiFileDialog* vContext) +{ + char* res = nullptr; + + if (vContext) + { + auto s = vContext->GetCurrentFileName(); + if (!s.empty()) + { + size_t siz = s.size() + 1U; + res = new char[siz]; +#ifndef MSVC + strncpy(res, s.c_str(), siz); +#else + strncpy_s(res, siz, s.c_str(), siz); +#endif + res[siz - 1U] = '\0'; + } + } + + return res; +} + +IMGUIFILEDIALOG_API char* IGFD_GetCurrentPath(ImGuiFileDialog* vContext) +{ + char* res = nullptr; + + if (vContext) + { + auto s = vContext->GetCurrentPath(); + if (!s.empty()) + { + size_t siz = s.size() + 1U; + res = new char[siz]; +#ifndef MSVC + strncpy(res, s.c_str(), siz); +#else + strncpy_s(res, siz, s.c_str(), siz); +#endif + res[siz - 1U] = '\0'; + } + } + + return res; +} + +IMGUIFILEDIALOG_API char* IGFD_GetCurrentFilter(ImGuiFileDialog* vContext) +{ + char* res = nullptr; + + if (vContext) + { + auto s = vContext->GetCurrentFilter(); + if (!s.empty()) + { + size_t siz = s.size() + 1U; + res = new char[siz]; +#ifndef MSVC + strncpy(res, s.c_str(), siz); +#else + strncpy_s(res, siz, s.c_str(), siz); +#endif + res[siz - 1U] = '\0'; + } + } + + return res; +} + +IMGUIFILEDIALOG_API void* IGFD_GetUserDatas(ImGuiFileDialog* vContext) +{ + if (vContext) + { + return vContext->GetUserDatas(); + } + + return nullptr; +} + +IMGUIFILEDIALOG_API void IGFD_SetFileStyle(ImGuiFileDialog* vContext, + IGFD_FileStyleFlags vFlags, const char* vCriteria, ImVec4 vColor, const char* vIcon, ImFont* vFont) //-V813 +{ + if (vContext) + { + vContext->SetFileStyle(vFlags, vCriteria, vColor, vIcon, vFont); + } +} + +IMGUIFILEDIALOG_API void IGFD_SetFileStyle2(ImGuiFileDialog* vContext, + IGFD_FileStyleFlags vFlags, const char* vCriteria, float vR, float vG, float vB, float vA, const char* vIcon, ImFont* vFont) +{ + if (vContext) + { + vContext->SetFileStyle(vFlags, vCriteria, ImVec4(vR, vG, vB, vA), vIcon, vFont); + } +} + +IMGUIFILEDIALOG_API bool IGFD_GetFileStyle(ImGuiFileDialog* vContext, + IGFD_FileStyleFlags vFlags, const char* vCriteria, ImVec4* vOutColor, char** vOutIcon, ImFont** vOutFont) +{ + if (vContext) + { + std::string icon; + bool res = vContext->GetFileStyle(vFlags, vCriteria, vOutColor, &icon, vOutFont); + if (!icon.empty() && vOutIcon) + { + size_t siz = icon.size() + 1U; + *vOutIcon = new char[siz]; +#ifndef MSVC + strncpy(*vOutIcon, icon.c_str(), siz); +#else + strncpy_s(*vOutIcon, siz, icon.c_str(), siz); +#endif + (*vOutIcon)[siz - 1U] = '\0'; + } + return res; + } + + return false; +} + +IMGUIFILEDIALOG_API void IGFD_ClearFilesStyle(ImGuiFileDialog* vContext) +{ + if (vContext) + { + vContext->ClearFilesStyle(); + } +} + +IMGUIFILEDIALOG_API void SetLocales(ImGuiFileDialog* vContext, const int vCategory, const char* vBeginLocale, const char* vEndLocale) +{ + if (vContext) + { + vContext->SetLocales(vCategory, (vBeginLocale ? vBeginLocale : ""), (vEndLocale ? vEndLocale : "")); + } +} + +#ifdef USE_EXPLORATION_BY_KEYS +IMGUIFILEDIALOG_API void IGFD_SetFlashingAttenuationInSeconds(ImGuiFileDialog* vContext, float vAttenValue) +{ + if (vContext) + { + vContext->SetFlashingAttenuationInSeconds(vAttenValue); + } +} +#endif + +#ifdef USE_BOOKMARK +IMGUIFILEDIALOG_API char* IGFD_SerializeBookmarks(ImGuiFileDialog* vContext) +{ + char* res = nullptr; + + if (vContext) + { + auto s = vContext->SerializeBookmarks(); + if (!s.empty()) + { + size_t siz = s.size() + 1U; + res = new char[siz]; +#ifndef MSVC + strncpy(res, s.c_str(), siz); +#else + strncpy_s(res, siz, s.c_str(), siz); +#endif + res[siz - 1U] = '\0'; + } + } + + return res; +} + +IMGUIFILEDIALOG_API void IGFD_DeserializeBookmarks(ImGuiFileDialog* vContext, const char* vBookmarks) +{ + if (vContext) + { + vContext->DeserializeBookmarks(vBookmarks); + } +} +#endif + +#ifdef USE_THUMBNAILS +IMGUIFILEDIALOG_API void SetCreateThumbnailCallback(ImGuiFileDialog* vContext, const IGFD_CreateThumbnailFun vCreateThumbnailFun) +{ + if (vContext) + { + vContext->SetCreateThumbnailCallback(vCreateThumbnailFun); + } +} + +IMGUIFILEDIALOG_API void SetDestroyThumbnailCallback(ImGuiFileDialog* vContext, const IGFD_DestroyThumbnailFun vDestroyThumbnailFun) +{ + if (vContext) + { + vContext->SetDestroyThumbnailCallback(vDestroyThumbnailFun); + } +} + +IMGUIFILEDIALOG_API void ManageGPUThumbnails(ImGuiFileDialog* vContext) +{ + if (vContext) + { + vContext->ManageGPUThumbnails(); + } +} +#endif // USE_THUMBNAILS diff --git a/extern/igfd/ImGuiFileDialog.h b/extern/igfd/ImGuiFileDialog.h new file mode 100644 index 00000000..4c7515c4 --- /dev/null +++ b/extern/igfd/ImGuiFileDialog.h @@ -0,0 +1,1594 @@ +/* +MIT License + +Copyright (c) 2019-2021 Stephane Cuillerdier (aka aiekick) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +*/ + +/* +----------------------------------------------------------------------------------------------------------------- +----------------------------------------------------------------------------------------------------------------- + +github repo : https://github.com/aiekick/ImGuiFileDialog + +----------------------------------------------------------------------------------------------------------------- +## Description : +----------------------------------------------------------------------------------------------------------------- + +this File Dialog is build on top of DearImGui +(On windows, need te lib Dirent : https://github.com/tronkko/dirent, use the branch 1.23 for avoid any issues) +Complete readme here : https://github.com/aiekick/ImGuiFileDialog/blob/master/README.md) + +this filedialog was created principally for have custom pane with widgets accrdoing to file extention. +it was not possible with native filedialog + +An example of the File Dialog integrated within the ImGui Demo App + +----------------------------------------------------------------------------------------------------------------- +## Features : +----------------------------------------------------------------------------------------------------------------- + +- Separate system for call and display + - can be many func calls with different params for one display func by ex +- Can use custom pane via function binding + - this pane can block the validation of the dialog + - can also display different things according to current filter and User Datas +- Support of Filter Custom Coloring / Icons / text +- Multi Selection (ctrl/shift + click) : + - 0 => infinite + - 1 => one file (default) + - n => n files +- Compatible with MacOs, Linux, Win + - On Win version you can list Drives +- Support of Modal/Standard dialog type +- Support both Mode : File Chooser or Directory Chooser +- Support filter collection / Custom filter name +- Support files Exploring with keys : Up / Down / Enter (open dir) / Backspace (come back) +- Support files Exploring by input char (case insensitive) +- Support bookmark creation/edition/call for directory (can have custom name corresponding to a path) +- Support input path edition by right click on a path button +- Support of a 'Confirm to Overwrite" dialog if File Exist + + +----------------------------------------------------------------------------------------------------------------- +## NameSpace / SingleTon +----------------------------------------------------------------------------------------------------------------- + +Use the Namespace IGFD (for avoid conflict with variables, struct and class names) + +you can display only one dialog at a time, this class is a simgleton and must be called like that : +ImGuiFileDialog::Instance()->method_of_your_choice() + +----------------------------------------------------------------------------------------------------------------- +## Simple Dialog : +----------------------------------------------------------------------------------------------------------------- + +Example code : +void drawGui() +{ + // open Dialog Simple + if (ImGui::Button("Open File Dialog")) + ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".cpp,.h,.hpp", "."); + + // display + if (ImGuiFileDialog::Instance()->FileDialog("ChooseFileDlgKey")) + { + // action if OK + if (ImGuiFileDialog::Instance()->IsOk == true) + { + std::string filePathName = ImGuiFileDialog::Instance()->GetFilePathName(); + std::string filePath = ImGuiFileDialog::Instance()->GetCurrentPath(); + // action + } + // close + ImGuiFileDialog::Instance()->CloseDialog("ChooseFileDlgKey"); + } +} + +----------------------------------------------------------------------------------------------------------------- +## Directory Chooser : +----------------------------------------------------------------------------------------------------------------- + +For have only a directory chooser, you just need to specify a filter null : + +Example code : +ImGuiFileDialog::Instance()->OpenDialog("ChooseDirDlgKey", "Choose a Directory", 0, "."); + +In this mode you can select any directory with one click, and open directory with double click + +----------------------------------------------------------------------------------------------------------------- +## Dialog with Custom Pane : +----------------------------------------------------------------------------------------------------------------- + +Example code : +static bool canValidateDialog = false; +inline void InfosPane(std::string& vFilter, IGFD::UserDatas vUserDatas, bool *vCantContinue) // if vCantContinue is false, the user cant validate the dialog +{ + ImGui::TextColored(ImVec4(0, 1, 1, 1), "Infos Pane"); + ImGui::Text("Selected Filter : %s", vFilter.c_str()); + if (vUserDatas) + ImGui::Text("UserDatas : %s", vUserDatas); + ImGui::Checkbox("if not checked you cant validate the dialog", &canValidateDialog); + if (vCantContinue) + *vCantContinue = canValidateDialog; +} + +void drawGui() +{ + // open Dialog with Pane + if (ImGui::Button("Open File Dialog with a custom pane")) + ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".cpp,.h,.hpp", + ".", "", std::bind(&InfosPane, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), 350, 1, IGFD::UserDatas("InfosPane")); + + // display and action if ok + if (ImGuiFileDialog::Instance()->FileDialog("ChooseFileDlgKey")) + { + if (ImGuiFileDialog::Instance()->IsOk == true) + { + std::string filePathName = ImGuiFileDialog::Instance()->GetFilePathName(); + std::string filePath = ImGuiFileDialog::Instance()->GetCurrentPath(); + std::string filter = ImGuiFileDialog::Instance()->GetCurrentFilter(); + // here convert from string because a string was passed as a userDatas, but it can be what you want + std::string userDatas; + if (ImGuiFileDialog::Instance()->GetUserDatas()) + userDatas = std::string((const char*)ImGuiFileDialog::Instance()->GetUserDatas()); + auto selection = ImGuiFileDialog::Instance()->GetSelection(); // multiselection + + // action + } + // close + ImGuiFileDialog::Instance()->CloseDialog("ChooseFileDlgKey"); + } +} + +----------------------------------------------------------------------------------------------------------------- +## File Style +----------------------------------------------------------------------------------------------------------------- + +You can define style for files/dirs/links in many ways : + +the style can be colors, icons and fonts + +the general form is : +ImGuiFileDialog::Instance()->SetFileStyle(styleType, criteria, color, icon, font); + +styleType can be thoses : +IGFD_FileStyle_None // define none style +IGFD_FileStyleByTypeFile // define style for all files +IGFD_FileStyleByTypeDir // define style for all dir +IGFD_FileStyleByTypeLink // define style for all link +IGFD_FileStyleByExtention // define style by extention, for files or links +IGFD_FileStyleByFullName // define style for particular file/dir/link full name (filename + extention) +IGFD_FileStyleByContainedInFullName // define style for file/dir/link when criteria is contained in full name + +samples : + +define style by file extention +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".png", ImVec4(0.0f, 1.0f, 1.0f, 0.9f), ICON_IGFD_FILE_PIC, font1); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".gif", ImVec4(0.0f, 1.0f, 0.5f, 0.9f), "[GIF]"); + +define style for all directories +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir, "", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FOLDER); +can be for a specific directory +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir, ".git", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FOLDER); + +define style for all files +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile, "", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FILE); +can be for a specific file +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile, ".git", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FILE); + +define style for all links +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeLink, "", ImVec4(0.5f, 1.0f, 0.9f, 0.9f)); +can be for a specific link +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeLink, "Readme.md", ImVec4(0.5f, 1.0f, 0.9f, 0.9f)); + +define style for any files/dirs/links by fullname +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByFullName, "doc", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_FILE_PIC); + +define style for any dirs by file who are containing this string +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir | IGFD_FileStyleByContainedInFullName, ".git", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_BOOKMARK); + +define style for any files by file who are containing this string +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile | IGFD_FileStyleByContainedInFullName, ".git", ImVec4(0.5f, 0.8f, 0.5f, 0.9f), ICON_IGFD_SAVE); + +----------------------------------------------------------------------------------------------------------------- +## Filter Collections +----------------------------------------------------------------------------------------------------------------- + +you can define a custom filter name who correspond to a group of filter + +you must use this syntax : custom_name1{filter1,filter2,filter3},custom_name2{filter1,filter2},filter1 +when you will select custom_name1, the gorup of filter 1 to 3 will be applied +the reserved char are {}, you cant use them for define filter name. + +Example code : +const char *filters = "Source files (*.cpp *.h *.hpp){.cpp,.h,.hpp},Image files (*.png *.gif *.jpg *.jpeg){.png,.gif,.jpg,.jpeg},.md"; +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", ICON_IMFDLG_FOLDER_OPEN " Choose a File", filters, "."); + +## Multi Selection + +You can define in OpenDialog/OpenModal call the count file you wan to select : +- 0 => infinite +- 1 => one file only (default) +- n => n files only + +See the define at the end of these funcs after path. + +Example code : +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".*,.cpp,.h,.hpp", "."); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose 1 File", ".*,.cpp,.h,.hpp", ".", 1); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose 5 File", ".*,.cpp,.h,.hpp", ".", 5); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose many File", ".*,.cpp,.h,.hpp", ".", 0); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".png,.jpg", + ".", "", std::bind(&InfosPane, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), 350, 1, "SaveFile"); // 1 file + +----------------------------------------------------------------------------------------------------------------- +## File Dialog Constraints +----------------------------------------------------------------------------------------------------------------- + +you can define min/max size of the dialog when you display It + +by ex : + +* MaxSize is the full display size +* MinSize in the half display size. + +Example code : +ImVec2 maxSize = ImVec2((float)display_w, (float)display_h); +ImVec2 minSize = maxSize * 0.5f; +ImGuiFileDialog::Instance()->FileDialog("ChooseFileDlgKey", ImGuiWindowFlags_NoCollapse, minSize, maxSize); + +----------------------------------------------------------------------------------------------------------------- +## Detail View Mode +----------------------------------------------------------------------------------------------------------------- + +You can have tables display like that. + +- uncomment "#define USE_IMGUI_TABLES" in you custom config file (CustomImGuiFileDialogConfig.h in this example) + +----------------------------------------------------------------------------------------------------------------- +## Exploring by keys +----------------------------------------------------------------------------------------------------------------- + +you can activate this feature by uncomment : "#define USE_EXPLORATION_BY_KEYS" +in you custom config file (CustomImGuiFileDialogConfig.h in this example) + +you can also uncomment the next lines for define your keys : + +* IGFD_KEY_UP => Up key for explore to the top +* IGFD_KEY_DOWN => Down key for explore to the bottom +* IGFD_KEY_ENTER => Enter key for open directory +* IGFD_KEY_BACKSPACE => BackSpace for comming back to the last directory + +you can also explore a file list by use the current key char. + +as you see the current item is flashed (by default for 1 sec) +you can define the flashing life time by yourself with the function + +Example code : +ImGuiFileDialog::Instance()->SetFlashingAttenuationInSeconds(1.0f); + +----------------------------------------------------------------------------------------------------------------- +## Bookmarks +----------------------------------------------------------------------------------------------------------------- + +you can create/edit/call path bookmarks and load/save them in file + +you can activate it by uncomment : "#define USE_BOOKMARK" + +in you custom config file (CustomImGuiFileDialogConfig.h in this example) + +you can also uncomment the next lines for customize it : +Example code : +#define bookmarkPaneWith 150.0f => width of the bookmark pane +#define IMGUI_TOGGLE_BUTTON ToggleButton => customize the Toggled button (button stamp must be : (const char* label, bool *toggle) +#define bookmarksButtonString "Bookmark" => the text in the toggle button +#define bookmarksButtonHelpString "Bookmark" => the helper text when mouse over the button +#define addBookmarkButtonString "+" => the button for add a bookmark +#define removeBookmarkButtonString "-" => the button for remove the selected bookmark + + +* you can select each bookmark for edit the displayed name corresponding to a path +* you must double click on the label for apply the bookmark + +you can also serialize/deserialize bookmarks by ex for load/save from/to file : (check the app sample by ex) +Example code : +Load => ImGuiFileDialog::Instance()->DeserializeBookmarks(bookmarString); +Save => std::string bookmarkString = ImGuiFileDialog::Instance()->SerializeBookmarks(); + +----------------------------------------------------------------------------------------------------------------- +## Path Edition : +----------------------------------------------------------------------------------------------------------------- + +if you click right on one of any path button, you can input or modify the path pointed by this button. +then press the validate key (Enter by default with GLFW) for validate the new path +or press the escape key (Escape by default with GLFW) for quit the input path edition + +see in this gif doc/inputPathEdition.gif : +1) button edition with mouse button right and escape key for quit the edition +2) focus the input and press validation for set path + +----------------------------------------------------------------------------------------------------------------- +## Confirm to OverWrite Dialog : +----------------------------------------------------------------------------------------------------------------- + +If you want avoid OverWrite your files after confirmation, +you can show a Dialog for confirm or cancel the OverWrite operation. + +You just need to define the flag ImGuiFileDialogFlags_ConfirmOverwrite +in your call to OpenDialog/OpenModal + +By default this flag is not set, since there is no pre-defined way to +define if a dialog will be for Open or Save behavior. (and its wanted :) ) + +Example code For Standard Dialog : +Example code : +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", + ICON_IGFD_SAVE " Choose a File", filters, + ".", "", 1, nullptr, ImGuiFileDialogFlags_ConfirmOverwrite); + +Example code For Modal Dialog : +Example code : +ImGuiFileDialog::Instance()->OpenModal("ChooseFileDlgKey", + ICON_IGFD_SAVE " Choose a File", filters, + ".", "", 1, nullptr, ImGuiFileDialogFlags_ConfirmOverwrite); + +This dialog will only verify the file in the file field. +So Not to be used with GetSelection() + +The Confirm dialog will be a forced Modal Dialog, not moveable, displayed +in the center of the current FileDialog. + +As usual you can customize the dialog, +in you custom config file (CustomImGuiFileDialogConfig.h in this example) + +you can uncomment the next lines for customize it : + +Example code : +#define OverWriteDialogTitleString "The file Already Exist !" +#define OverWriteDialogMessageString "Would you like to OverWrite it ?" +#define OverWriteDialogConfirmButtonString "Confirm" +#define OverWriteDialogCancelButtonString "Cancel" + +----------------------------------------------------------------------------------------------------------------- +## Flags : +----------------------------------------------------------------------------------------------------------------- + +flag must be specified in OpenDialog or OpenModal +* ImGuiFileDialogFlags_ConfirmOverwrite => show confirm to overwrite dialog +* ImGuiFileDialogFlags_DontShowHiddenFiles => dont show hidden file (file starting with a .) + +----------------------------------------------------------------------------------------------------------------- +## Open / Save dialog Behavior : +----------------------------------------------------------------------------------------------------------------- + +There is no way to distinguish the "open dialog" behavior than "save dialog" behavior. +So you msut adapt the return according to your need : + +if you want open file(s) or directory(s), you must use : GetSelection() method. you will obtain a std::map of the selection +if you want create a file, you must use : GetFilePathName()/GetCurrentFileName() + +the return method's and comments : + +Example code : +std::map GetSelection(); // Open File behavior : will return selection via a map +std::string GetFilePathName(); // Create File behavior : will always return the content of the field with current filter extention and current path +std::string GetCurrentFileName(); // Create File behavior : will always return the content of the field with current filter extention +std::string GetCurrentPath(); // will return current path +std::string GetCurrentFilter(); // get selected filter +UserDatas GetUserDatas(); // get user datas send with Open Dialog + +----------------------------------------------------------------------------------------------------------------- +## Thumbnails Display +----------------------------------------------------------------------------------------------------------------- + +You can now, display thumbnails of pictures. + +The file resize use stb/image so the following files extentions are supported : +(.png, .bmp, .tga, .jpg, .jpeg, .gif, .psd, .pic, .ppm, .pgm) +only tested with .png, .bmp, .tga, .jpg, .jpeg and .gif by the way + +Corresponding to your backend (ex : OpenGl) you need to define two callbacks : +* the first is a callback who will be called by ImGuiFileDialog for create the backend texture +* the second is a callback who will be called by ImGuiFileDialog for destroy the backend texture + +After that you need to call the function who is responsible to create / destroy the textures. +this function must be called in your GPU Rendering zone for avoid destroying of used texture. +if you do that at the same place of your imgui code, some backend can crash your app, by ex with vulkan. + +ex, for opengl : + +Example code : +// Create thumbnails texture +ImGuiFileDialog::Instance()->SetCreateThumbnailCallback([](IGFD_Thumbnail_Info *vThumbnail_Info) -> void +{ + if (vThumbnail_Info && + vThumbnail_Info->isReadyToUpload && + vThumbnail_Info->textureFileDatas) + { + GLuint textureId = 0; + glGenTextures(1, &textureId); + vThumbnail_Info->textureID = (void*)textureId; + + glBindTexture(GL_TEXTURE_2D, textureId); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, + (GLsizei)vThumbnail_Info->textureWidth, (GLsizei)vThumbnail_Info->textureHeight, + 0, GL_RGBA, GL_UNSIGNED_BYTE, vThumbnail_Info->textureFileDatas); + glFinish(); + glBindTexture(GL_TEXTURE_2D, 0); + + delete[] vThumbnail_Info->textureFileDatas; + vThumbnail_Info->textureFileDatas = nullptr; + + vThumbnail_Info->isReadyToUpload = false; + vThumbnail_Info->isReadyToDisplay = true; + } +}); + +Example code : +// Destroy thumbnails texture +ImGuiFileDialog::Instance()->SetDestroyThumbnailCallback([](IGFD_Thumbnail_Info* vThumbnail_Info) +{ + if (vThumbnail_Info) + { + GLuint texID = (GLuint)vThumbnail_Info->textureID; + glDeleteTextures(1, &texID); + glFinish(); + } +}); + +Example code : +// GPU Rendering Zone // To call for Create/ Destroy Textures +ImGuiFileDialog::Instance()->ManageGPUThumbnails(); + +----------------------------------------------------------------------------------------------------------------- +## C API +----------------------------------------------------------------------------------------------------------------- + +A C API is available let you include ImGuiFileDialog in your C project. +btw, ImGuiFileDialog depend of ImGui and dirent (for windows) + +Sample code with cimgui : + +// create ImGuiFileDialog +ImGuiFileDialog *cfileDialog = IGFD_Create(); + +// open dialog +if (igButton("Open File", buttonSize)) +{ + IGFD_OpenDialog(cfiledialog, + "filedlg", // dialog key (make it possible to have different treatment reagrding the dialog key + "Open a File", // dialog title + "c files(*.c *.h){.c,.h}", // dialog filter syntax : simple => .h,.c,.pp, etc and collections : text1{filter0,filter1,filter2}, text2{filter0,filter1,filter2}, etc.. + ".", // base directory for files scan + "", // base filename + 0, // a fucntion for display a right pane if you want + 0.0f, // base width of the pane + 0, // count selection : 0 infinite, 1 one file (default), n (n files) + "User data !", // some user datas + ImGuiFileDialogFlags_ConfirmOverwrite); // ImGuiFileDialogFlags +} + +ImGuiIO* ioptr = igGetIO(); +ImVec2 maxSize; +maxSize.x = ioptr->DisplaySize.x * 0.8f; +maxSize.y = ioptr->DisplaySize.y * 0.8f; +ImVec2 minSize; +minSize.x = maxSize.x * 0.25f; +minSize.y = maxSize.y * 0.25f; + +// display dialog +if (IGFD_DisplayDialog(cfiledialog, "filedlg", ImGuiWindowFlags_NoCollapse, minSize, maxSize)) +{ + if (IGFD_IsOk(cfiledialog)) // result ok + { + char* cfilePathName = IGFD_GetFilePathName(cfiledialog); + printf("GetFilePathName : %s\n", cfilePathName); + char* cfilePath = IGFD_GetCurrentPath(cfiledialog); + printf("GetCurrentPath : %s\n", cfilePath); + char* cfilter = IGFD_GetCurrentFilter(cfiledialog); + printf("GetCurrentFilter : %s\n", cfilter); + // here convert from string because a string was passed as a userDatas, but it can be what you want + void* cdatas = IGFD_GetUserDatas(cfiledialog); + if (cdatas) + printf("GetUserDatas : %s\n", (const char*)cdatas); + struct IGFD_Selection csel = IGFD_GetSelection(cfiledialog); // multi selection + printf("Selection :\n"); + for (int i = 0; i < (int)csel.count; i++) + { + printf("(%i) FileName %s => path %s\n", i, csel.table[i].fileName, csel.table[i].filePathName); + } + // action + + // destroy + if (cfilePathName) free(cfilePathName); + if (cfilePath) free(cfilePath); + if (cfilter) free(cfilter); + + IGFD_Selection_DestroyContent(&csel); + } + IGFD_CloseDialog(cfiledialog); +} + +// destroy ImGuiFileDialog +IGFD_Destroy(cfiledialog); + +----------------------------------------------------------------------------------------------------------------- +## Std::filesystem (c++17) can be used instead of dirent.h +----------------------------------------------------------------------------------------------------------------- + +you just need to uncomment that in the config file + +#define USE_STD_FILESYSTEM + +in this mode dirent is not more required + +----------------------------------------------------------------------------------------------------------------- +## How to Integrate ImGuiFileDialog in your project +----------------------------------------------------------------------------------------------------------------- + +### ImGuiFileDialog require : + +* dirent v1.23 (only when USE_STD_FILESYSTEM is not defined) (https://github.com/tronkko/dirent/tree/v1.23) lib, only for windows. Successfully tested with version v1.23 only +* Dear ImGui (https://github.com/ocornut/imgui/tree/master) (with/without tables widgets) + +### Customize ImGuiFileDialog : + +You just need to write your own config file by override the file : ImGuiFileDialog/ImGuiFileDialogConfig.h +like i do here with CustomImGuiFileDialogConfig.h + +After that, for let ImGuiFileDialog your own custom file, +you must define the preprocessor directive CUSTOM_IMGUIFILEDIALOG_CONFIG with the path of you custom config file. +This path must be relative to the directory where you put ImGuiFileDialog module. + +----------------------------------------------------------------------------------------------------------------- +----------------------------------------------------------------------------------------------------------------- + +Thats all. + +You can check by example in this repo with the file CustomImGuiFileDialogConfig.h : +- this trick was used for have custom icon font instead of labels for buttons or messages titles +- you can also use your custom imgui button, the button call stamp must be same by the way :) + +The Custom Icon Font (in CustomFont.cpp and CustomFont.h) was made with ImGuiFontStudio (https://github.com/aiekick/ImGuiFontStudio) i wrote for that :) +ImGuiFontStudio is using also ImGuiFileDialog. + +----------------------------------------------------------------------------------------------------------------- +----------------------------------------------------------------------------------------------------------------- +*/ + +#ifndef IMGUIFILEDIALOG_H +#define IMGUIFILEDIALOG_H + +#define IMGUIFILEDIALOG_VERSION "v0.6.4" + +#ifndef CUSTOM_IMGUIFILEDIALOG_CONFIG +#include "ImGuiFileDialogConfig.h" +#else // CUSTOM_IMGUIFILEDIALOG_CONFIG +#include CUSTOM_IMGUIFILEDIALOG_CONFIG +#endif // CUSTOM_IMGUIFILEDIALOG_CONFIG + +// file style enum for file display (color, icon, font) +typedef int IGFD_FileStyleFlags; // -> enum IGFD_FileStyleFlags_ +enum IGFD_FileStyleFlags_ // by evaluation / priority order +{ + IGFD_FileStyle_None = 0, // define none style + IGFD_FileStyleByTypeFile = (1 << 0), // define style for all files + IGFD_FileStyleByTypeDir = (1 << 1), // define style for all dir + IGFD_FileStyleByTypeLink = (1 << 2), // define style for all link + IGFD_FileStyleByExtention = (1 << 3), // define style by extention, for files or links + IGFD_FileStyleByFullName = (1 << 4), // define style for particular file/dir/link full name (filename + extention) + IGFD_FileStyleByContainedInFullName = (1 << 5), // define style for file/dir/link when criteria is contained in full name +}; + +typedef int ImGuiFileDialogFlags; // -> enum ImGuiFileDialogFlags_ +enum ImGuiFileDialogFlags_ +{ + ImGuiFileDialogFlags_None = 0, + ImGuiFileDialogFlags_ConfirmOverwrite = (1 << 0), // show confirm to overwrite dialog + ImGuiFileDialogFlags_DontShowHiddenFiles = (1 << 1), // dont show hidden file (file starting with a .) + ImGuiFileDialogFlags_DisableCreateDirectoryButton = (1 << 2), // disable the create directory button + ImGuiFileDialogFlags_HideColumnType = (1 << 3), // hide column file type + ImGuiFileDialogFlags_HideColumnSize = (1 << 4), // hide column file size + ImGuiFileDialogFlags_HideColumnDate = (1 << 5), // hide column file date +#ifdef USE_THUMBNAILS + ImGuiFileDialogFlags_DisableThumbnailMode = (1 << 6), // disable the thumbnail mode +#endif + ImGuiFileDialogFlags_Default = ImGuiFileDialogFlags_ConfirmOverwrite +}; + +#ifdef USE_THUMBNAILS +struct IGFD_Thumbnail_Info +{ + int isReadyToDisplay = 0; // ready to be rendered, so texture created + int isReadyToUpload = 0; // ready to upload to gpu + int isLoadingOrLoaded = 0; // was sent to laoding or loaded + void* textureID = 0; // 2d texture id (void* is like ImtextureID type) (GL, DX, VK, Etc..) + unsigned char* textureFileDatas = 0; // file texture datas, will be rested to null after gpu upload + int textureWidth = 0; // width of the texture to upload + int textureHeight = 0; // height of the texture to upload + int textureChannels = 0; // count channels of the texture to upload + void* userDatas = 0; // user datas +}; +#endif // USE_THUMBNAILS + +#ifdef __cplusplus + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +namespace IGFD +{ +#ifndef MAX_FILE_DIALOG_NAME_BUFFER +#define MAX_FILE_DIALOG_NAME_BUFFER 1024 +#endif // MAX_FILE_DIALOG_NAME_BUFFER + +#ifndef MAX_PATH_BUFFER_SIZE +#define MAX_PATH_BUFFER_SIZE 1024 +#endif // MAX_PATH_BUFFER_SIZE + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class FileDialogInternal; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class SearchManager + { + public: + std::string puSearchTag; + char puSearchBuffer[MAX_FILE_DIALOG_NAME_BUFFER] = ""; + bool puSearchInputIsActive = false; + + public: + void Clear(); // clear datas + void DrawSearchBar(FileDialogInternal& vFileDialogInternal); // draw the search bar + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class Utils + { + public: + struct PathStruct + { + std::string path; + std::string name; + std::string ext; + bool isOk = false; + }; + + public: + static bool Splitter(bool split_vertically, float thickness, float* size1, float* size2, float min_size1, float min_size2, float splitter_long_axis_size = -1.0f); + static bool ReplaceString(std::string& str, const std::string& oldStr, const std::string& newStr); + static bool IsDirectoryExist(const std::string& name); + static bool CreateDirectoryIfNotExist(const std::string& name); + static PathStruct ParsePathFileName(const std::string& vPathFileName); + static void AppendToBuffer(char* vBuffer, size_t vBufferLen, const std::string& vStr); + static void ResetBuffer(char* vBuffer); + static void SetBuffer(char* vBuffer, size_t vBufferLen, const std::string& vStr); +#ifdef WIN32 + static bool WReplaceString(std::wstring& str, const std::wstring& oldStr, const std::wstring& newStr); + static std::vector WSplitStringToVector(const std::wstring& text, char delimiter, bool pushEmpty); + static std::string wstring_to_string(const std::wstring& wstr); + static std::wstring string_to_wstring(const std::string& mbstr); +#endif + static std::vector SplitStringToVector(const std::string& text, char delimiter, bool pushEmpty); + static std::vector GetDrivesList(); + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class FileStyle + { + public: + ImVec4 color = ImVec4(0, 0, 0, 0); + std::string icon; + ImFont* font = nullptr; + IGFD_FileStyleFlags flags = 0; + + public: + FileStyle(); + FileStyle(const FileStyle& vStyle); + FileStyle(const ImVec4& vColor, const std::string& vIcon = "", ImFont* vFont = nullptr); + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class FileInfos; + class FilterManager + { + public: + class FilterInfos + { + public: + std::string filter; + std::set collectionfilters; + + public: + void clear(); // clear the datas + bool empty() const; // is filter empty + bool exist(const std::string& vFilter) const; // is filter exist + }; + + private: + std::vector prParsedFilters; + std::unordered_map>> prFilesStyle; // file infos for file extention only + FilterInfos prSelectedFilter; + + public: + std::string puDLGFilters; + std::string puDLGdefaultExt; + + public: + void ParseFilters(const char* vFilters); // Parse filter syntax, detect and parse filter collection + void SetSelectedFilterWithExt(const std::string& vFilter); // Select filter + + bool prFillFileStyle(std::shared_ptr vFileInfos) const; // fill with the good style + + void SetFileStyle( + const IGFD_FileStyleFlags& vFlags, + const char* vCriteria, + const FileStyle& vInfos); // Set FileStyle + void SetFileStyle( + const IGFD_FileStyleFlags& vFlags, + const char* vCriteria, + const ImVec4& vColor, + const std::string& vIcon, + ImFont* vFont); // link file style to Color and Icon and Font + bool GetFileStyle( + const IGFD_FileStyleFlags& vFlags, + const std::string& vCriteria, + ImVec4* vOutColor, + std::string* vOutIcon, + ImFont** vOutFont); // Get Color and Icon for Filter + void ClearFilesStyle(); // clear prFileStyle + + bool IsCoveredByFilters(const std::string& vTag) const; // check if current file extention (vTag) is covered by current filter + bool DrawFilterComboBox(FileDialogInternal& vFileDialogInternal); // draw the filter combobox + FilterInfos GetSelectedFilter(); // get the current selected filter + std::string ReplaceExtentionWithCurrentFilter(const std::string& vFile) const; // replace the extention of the current file by the selected filter + void SetDefaultFilterIfNotDefined(); // define the first filter if no filter is selected + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class FileInfos + { + public: + char fileType = ' '; // dirent fileType (f:file, d:directory, l:link) + std::string filePath; // path of the file + std::string fileNameExt; // filename of the file (file name + extention) (but no path) + std::string fileNameExt_optimized; // optimized for search => insensitivecase + std::string fileExt; // extention of the file + size_t fileSize = 0; // for sorting operations + std::string formatedFileSize; // file size formated (10 o, 10 ko, 10 mo, 10 go) + std::string fileModifDate; // file user defined format of the date (data + time by default) + std::shared_ptr fileStyle = nullptr; // style of the file +#ifdef USE_THUMBNAILS + IGFD_Thumbnail_Info thumbnailInfo; // structre for the display for image file tetxure +#endif // USE_THUMBNAILS + + public: + bool IsTagFound(const std::string& vTag) const; + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class FileManager + { + public: // types + enum class SortingFieldEnum // sorting for filetering of the file lsit + { + FIELD_NONE = 0, // no sorting preference, result indetermined haha.. + FIELD_FILENAME, // sorted by filename + FIELD_TYPE, // sorted by filetype + FIELD_SIZE, // sorted by filesize (formated file size) + FIELD_DATE, // sorted by filedate +#ifdef USE_THUMBNAILS + FIELD_THUMBNAILS, // sorted by thumbnails (comparaison by width then by height) +#endif // USE_THUMBNAILS + }; + + private: + std::string prCurrentPath; // current path (to be decomposed in prCurrentPathDecomposition + std::vector prCurrentPathDecomposition; // part words + std::vector> prFileList; // base container + std::vector> prFilteredFileList; // filtered container (search, sorting, etc..) + std::string prLastSelectedFileName; // for shift multi selection + std::set prSelectedFileNames; // the user selection of FilePathNames + bool prCreateDirectoryMode = false; // for create directory widget + + public: + char puVariadicBuffer[MAX_FILE_DIALOG_NAME_BUFFER] = ""; // called by prSelectableItem + bool puInputPathActivated = false; // show input for path edition + bool puDrivesClicked = false; // event when a drive button is clicked + bool puPathClicked = false; // event when a path button was clicked + char puInputPathBuffer[MAX_PATH_BUFFER_SIZE] = ""; // input path buffer for imgui widget input text (displayed in palce of composer) + char puFileNameBuffer[MAX_FILE_DIALOG_NAME_BUFFER] = ""; // file name buffer in footer for imgui widget input text + char puDirectoryNameBuffer[MAX_FILE_DIALOG_NAME_BUFFER] = ""; // directory name buffer in footer for imgui widget input text (when is directory mode) + std::string puHeaderFileName; // detail view name of column file + std::string puHeaderFileType; // detail view name of column type + std::string puHeaderFileSize; // detail view name of column size + std::string puHeaderFileDate; // detail view name of column date + time +#ifdef USE_THUMBNAILS + std::string puHeaderFileThumbnails; // detail view name of column thumbnails + bool puSortingDirection[5] = { true, true, true, true, true }; // detail view // true => Descending, false => Ascending +#else + bool puSortingDirection[4]; // detail view // true => Descending, false => Ascending +#endif + SortingFieldEnum puSortingField = SortingFieldEnum::FIELD_FILENAME; // detail view sorting column + bool puShowDrives = false; // drives are shown (only on os windows) + + std::string puDLGpath; // base path set by user when OpenDialog/OpenModal was called + std::string puDLGDefaultFileName; // base default file path name set by user when OpenDialog/OpenModal was called + size_t puDLGcountSelectionMax = 1U; // 0 for infinite // base max selection count set by user when OpenDialog/OpenModal was called + bool puDLGDirectoryMode = false; // is directory mode (defiend like : puDLGDirectoryMode = (filters.empty())) + + std::string puFsRoot; + + private: + static std::string prRoundNumber(double vvalue, int n); // custom rounding number + static std::string prFormatFileSize(size_t vByteSize); // format file size field + static std::string prOptimizeFilenameForSearchOperations(const std::string& vFileNameExt); // turn all text in lower case for search facilitie + static void prCompleteFileInfos(const std::shared_ptr& FileInfos); // set time and date infos of a file (detail view mode) + void prRemoveFileNameInSelection(const std::string& vFileName); // selection : remove a file name + void prAddFileNameInSelection(const std::string& vFileName, bool vSetLastSelectionFileName); // selection : add a file name + void AddFile(const FileDialogInternal& vFileDialogInternal, + const std::string& vPath, const std::string& vFileName, const char& vFileType); // add file called by scandir + + public: + FileManager(); + bool IsComposerEmpty(); + size_t GetComposerSize(); + bool IsFileListEmpty(); + bool IsFilteredListEmpty(); + size_t GetFullFileListSize(); + std::shared_ptr GetFullFileAt(size_t vIdx); + size_t GetFilteredListSize(); + std::shared_ptr GetFilteredFileAt(size_t vIdx); + bool IsFileNameSelected(const std::string& vFileName); + std::string GetBack(); + void ClearComposer(); + void ClearFileLists(); // clear file list, will destroy thumbnail textures + void ClearAll(); + void ApplyFilteringOnFileList(const FileDialogInternal& vFileDialogInternal); + void OpenCurrentPath(const FileDialogInternal& vFileDialogInternal); // set the path of the dialog, will launch the directory scan for populate the file listview + void SortFields(const FileDialogInternal& vFileDialogInternal, + const SortingFieldEnum& vSortingField, const bool vCanChangeOrder); // will sort a column + bool GetDrives(); // list drives on windows platform + bool CreateDir(const std::string& vPath); // create a directory on the file system + void ComposeNewPath(std::vector::iterator vIter); // compose a path from the compose path widget + bool SetPathOnParentDirectoryIfAny(); // compose paht on parent directory + std::string GetCurrentPath(); // get the current path + void SetCurrentPath(const std::string& vCurrentPath); // set the current path + static bool IsFileExist(const std::string& vFile); + void SetDefaultFileName(const std::string& vFileName); + bool SelectDirectory(const std::shared_ptr& vInfos); // enter directory + void SelectFileName(const FileDialogInternal& vFileDialogInternal, + const std::shared_ptr& vInfos); // select filename + + //depend of dirent.h + void SetCurrentDir(const std::string& vPath); // define current directory for scan + void ScanDir(const FileDialogInternal& vFileDialogInternal, const std::string& vPath); // scan the directory for retrieve the file list + + public: + std::string GetResultingPath(); + std::string GetResultingFileName(FileDialogInternal& vFileDialogInternal); + std::string GetResultingFilePathName(FileDialogInternal& vFileDialogInternal); + std::map GetResultingSelection(); + + public: + void DrawDirectoryCreation(const FileDialogInternal& vFileDialogInternal); // draw directory creation widget + void DrawPathComposer(const FileDialogInternal& vFileDialogInternal); // draw path composer widget + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + +#ifdef USE_THUMBNAILS + typedef std::function CreateThumbnailFun; // texture 2d creation function binding + typedef std::function DestroyThumbnailFun; // texture 2d destroy function binding +#endif + class ThumbnailFeature + { + protected: + ThumbnailFeature(); + ~ThumbnailFeature(); + + void NewThumbnailFrame(FileDialogInternal& vFileDialogInternal); + void EndThumbnailFrame(FileDialogInternal& vFileDialogInternal); + void QuitThumbnailFrame(FileDialogInternal& vFileDialogInternal); + +#ifdef USE_THUMBNAILS + protected: + enum class DisplayModeEnum + { + FILE_LIST = 0, + THUMBNAILS_LIST, + THUMBNAILS_GRID + }; + + private: + uint32_t prCountFiles = 0U; + bool prIsWorking = false; + std::shared_ptr prThumbnailGenerationThread = nullptr; + std::list> prThumbnailFileDatasToGet; // base container + std::mutex prThumbnailFileDatasToGetMutex; + std::list> prThumbnailToCreate; // base container + std::mutex prThumbnailToCreateMutex; + std::list prThumbnailToDestroy; // base container + std::mutex prThumbnailToDestroyMutex; + + CreateThumbnailFun prCreateThumbnailFun = nullptr; + DestroyThumbnailFun prDestroyThumbnailFun = nullptr; + + protected: + DisplayModeEnum prDisplayMode = DisplayModeEnum::FILE_LIST; + + protected: + // will be call in cpu zone (imgui computations, will call a texture file retrieval thread) + void prStartThumbnailFileDatasExtraction(); // start the thread who will get byte buffer from image files + bool prStopThumbnailFileDatasExtraction(); // stop the thread who will get byte buffer from image files + void prThreadThumbnailFileDatasExtractionFunc(); // the thread who will get byte buffer from image files + void prDrawThumbnailGenerationProgress(); // a little progressbar who will display the texture gen status + void prAddThumbnailToLoad(const std::shared_ptr& vFileInfos); // add texture to load in the thread + void prAddThumbnailToCreate(const std::shared_ptr& vFileInfos); + void prAddThumbnailToDestroy(const IGFD_Thumbnail_Info& vIGFD_Thumbnail_Info); + void prDrawDisplayModeToolBar(); // draw display mode toolbar (file list, thumbnails list, small thumbnails grid, big thumbnails grid) + void prClearThumbnails(FileDialogInternal& vFileDialogInternal); + + public: + void SetCreateThumbnailCallback(const CreateThumbnailFun& vCreateThumbnailFun); + void SetDestroyThumbnailCallback(const DestroyThumbnailFun& vCreateThumbnailFun); + + // must be call in gpu zone (rendering, possibly one rendering thread) + void ManageGPUThumbnails(); // in gpu rendering zone, whill create or destroy texture +#endif + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class BookMarkFeature + { + protected: + BookMarkFeature(); + +#ifdef USE_BOOKMARK + private: + struct BookmarkStruct + { + std::string name; // name of the bookmark + + // todo: the path could be relative, better if the app is movedn but bookmarked path can be outside of the app + std::string path; // absolute path of the bookmarked directory + }; + + private: + ImGuiListClipper prBookmarkClipper; + std::vector prBookmarks; + char prBookmarkEditBuffer[MAX_FILE_DIALOG_NAME_BUFFER] = ""; + + protected: + float prBookmarkWidth = 200.0f; + bool prBookmarkPaneShown = false; + + protected: + void prDrawBookmarkButton(); // draw bookmark button + bool prDrawBookmarkPane(FileDialogInternal& vFileDialogInternal, const ImVec2& vSize); // draw bookmark Pane + + public: + std::string SerializeBookmarks(); // serialize bookmarks : return bookmark buffer to save in a file + void DeserializeBookmarks( // deserialize bookmarks : load bookmark buffer to load in the dialog (saved from previous use with SerializeBookmarks()) + const std::string& vBookmarks); // bookmark buffer to load +#endif // USE_BOOKMARK + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + // file localization by input chat // widget flashing + class KeyExplorerFeature + { + protected: + KeyExplorerFeature(); + +#ifdef USE_EXPLORATION_BY_KEYS + private: + size_t prFlashedItem = 0; // flash when select by char + float prFlashAlpha = 0.0f; // flash when select by char + float prFlashAlphaAttenInSecs = 1.0f; // fps display dependant + size_t prLocateFileByInputChar_lastFileIdx = 0; + ImWchar prLocateFileByInputChar_lastChar = 0; + int prLocateFileByInputChar_InputQueueCharactersSize = 0; + bool prLocateFileByInputChar_lastFound = false; + + protected: + void prLocateByInputKey(FileDialogInternal& vFileDialogInternal); // select a file line in listview according to char key + bool prLocateItem_Loop(FileDialogInternal& vFileDialogInternal, ImWchar vC); // restrat for start of list view if not found a corresponding file + void prExploreWithkeys(FileDialogInternal& vFileDialogInternal, ImGuiID vListViewID); // select file/directory line in listview accroding to up/down enter/backspace keys + static bool prFlashableSelectable( // custom flashing selectable widgets, for flash the selected line in a short time + const char* label, bool selected = false, ImGuiSelectableFlags flags = 0, + bool vFlashing = false, const ImVec2& size = ImVec2(0, 0)); + void prStartFlashItem(size_t vIdx); // define than an item must be flashed + bool prBeginFlashItem(size_t vIdx); // start the flashing of a line in lsit view + static void prEndFlashItem(); // end the fleshing accrdoin to var prFlashAlphaAttenInSecs + + public: + void SetFlashingAttenuationInSeconds( // set the flashing time of the line in file list when use exploration keys + float vAttenValue); // set the attenuation (from flashed to not flashed) in seconds +#endif // USE_EXPLORATION_BY_KEYS + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + typedef void* UserDatas; + typedef std::function PaneFun; // side pane function binding + class FileDialogInternal + { + public: + FileManager puFileManager; + FilterManager puFilterManager; + SearchManager puSearchManager; + + public: + std::string puName; + bool puShowDialog = false; + ImVec2 puDialogCenterPos = ImVec2(0, 0); // center pos for display the confirm overwrite dialog + int puLastImGuiFrameCount = 0; // to be sure than only one dialog displayed per frame + float puFooterHeight = 0.0f; + bool puCanWeContinue = true; // events + bool puOkResultToConfirm = false; // to confim if ok for OverWrite + bool puIsOk = false; + bool puFileInputIsActive = false; // when input text for file or directory is active + bool puFileListViewIsActive = false; // when list view is active + std::string puDLGkey; + std::string puDLGtitle; + ImGuiFileDialogFlags puDLGflags = ImGuiFileDialogFlags_None; + UserDatas puDLGuserDatas = nullptr; + PaneFun puDLGoptionsPane = nullptr; + float puDLGoptionsPaneWidth = 0.0f; + bool puDLGmodal = false; + bool puNeedToExitDialog = false; + + bool puUseCustomLocale = false; + int puLocaleCategory = LC_ALL; // locale category to use + std::string puLocaleBegin; // the locale who will be applied at start of the display dialog + std::string puLocaleEnd; // the locale who will be applaied at end of the display dialog + + public: + void NewFrame(); // new frame, so maybe neded to do somethings, like reset events + void EndFrame(); // end frame, so maybe neded to do somethings fater all + void ResetForNewDialog(); // reset what is needed to reset for the openging of a new dialog + }; + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + + class FileDialog : + public BookMarkFeature, + public KeyExplorerFeature, + public ThumbnailFeature + { + private: + FileDialogInternal prFileDialogInternal; + ImGuiListClipper prFileListClipper; + + public: + bool puAnyWindowsHovered = false; // not remember why haha :) todo : to check if we can remove + + public: + static FileDialog* Instance() // Singleton for easier accces form anywhere but only one dialog at a time + { + static FileDialog _instance; + return &_instance; + } + + public: + FileDialog(); // ImGuiFileDialog Constructor. can be used for have many dialog at same tiem (not possible with singleton) + virtual ~FileDialog(); // ImGuiFileDialog Destructor + + // standard dialog + void OpenDialog( // open simple dialog (path and fileName can be specified) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + void OpenDialog( // open simple dialog (path and filename are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + // with pane + void OpenDialog( // open dialog with custom right pane (path and fileName can be specified) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + void OpenDialog( // open dialog with custom right pane (path and filename are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + // modal dialog + void OpenModal( // open simple modal (path and fileName can be specified) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + void OpenModal( // open simple modal (path and fielname are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + // with pane + void OpenModal( // open modal with custom right pane (path and filename are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + void OpenModal( // open modal with custom right pane (path and fielname are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + + // Display / Close dialog form + bool Display( // Display the dialog. return true if a result was obtained (Ok or not) + const std::string& vKey, // key dialog to display (if not the same key as defined by OpenDialog/Modal => no opening) + ImGuiWindowFlags vFlags = ImGuiWindowFlags_NoCollapse, // ImGuiWindowFlags + ImVec2 vMinSize = ImVec2(0, 0), // mininmal size contraint for the ImGuiWindow + ImVec2 vMaxSize = ImVec2(FLT_MAX, FLT_MAX)); // maximal size contraint for the ImGuiWindow + void Close(); // close dialog + + // queries + bool WasOpenedThisFrame(const std::string& vKey) const; // say if the dialog key was already opened this frame + bool WasOpenedThisFrame() const; // say if the dialog was already opened this frame + bool IsOpened(const std::string& vKey) const; // say if the key is opened + bool IsOpened() const; // say if the dialog is opened somewhere + std::string GetOpenedKey() const; // return the dialog key who is opened, return nothing if not opened + + // get result + bool IsOk() const; // true => Dialog Closed with Ok result / false : Dialog closed with cancel result + std::map GetSelection(); // Open File behavior : will return selection via a map + std::string GetFilePathName(); // Save File behavior : will always return the content of the field with current filter extention and current path + std::string GetCurrentFileName(); // Save File behavior : will always return the content of the field with current filter extention + std::string GetCurrentPath(); // will return current path + std::string GetCurrentFilter(); // will return selected filter + UserDatas GetUserDatas() const; // will return user datas send with Open Dialog/Modal + + // file style by extentions + void SetFileStyle( // SetExtention datas for have custom display of particular file type + const IGFD_FileStyleFlags& vFlags, // file style + const char* vCriteria, // extention filter to tune + const FileStyle& vInfos); // Filter Extention Struct who contain Color and Icon/Text for the display of the file with extention filter + void SetFileStyle( // SetExtention datas for have custom display of particular file type + const IGFD_FileStyleFlags& vFlags, // file style + const char* vCriteria, // extention filter to tune + const ImVec4& vColor, // wanted color for the display of the file with extention filter + const std::string& vIcon = "", // wanted text or icon of the file with extention filter + ImFont *vFont = nullptr); // wantes font + bool GetFileStyle( // GetExtention datas. return true is extention exist + const IGFD_FileStyleFlags& vFlags, // file style + const std::string& vCriteria, // extention filter (same as used in SetExtentionInfos) + ImVec4* vOutColor, // color to retrieve + std::string* vOutIcon = nullptr, // icon or text to retrieve + ImFont** vOutFont = nullptr); // font to retreive + void ClearFilesStyle(); // clear extentions setttings + + void SetLocales( // set locales to use before and after the dialog display + const int& vLocaleCategory, // set local category + const std::string& vLocaleBegin, // locale to use at begining of the dialog display + const std::string& vLocaleEnd); // locale to use at the end of the dialog display + + protected: + void NewFrame(); // new frame just at begining of display + void EndFrame(); // end frame just at end of display + void QuitFrame(); // quit frame when qui quit the dialog + + // others + bool prConfirm_Or_OpenOverWriteFileDialog_IfNeeded( + bool vLastAction, ImGuiWindowFlags vFlags); // treatment of the result, start the confirm to overwrite dialog if needed (if defined with flag) + + public: + // dialog parts + virtual void prDrawHeader(); // draw header part of the dialog (bookmark btn, dir creation, path composer, search bar) + virtual void prDrawContent(); // draw content part of the dialog (bookmark pane, file list, side pane) + virtual bool prDrawFooter(); // draw footer part of the dialog (file field, fitler combobox, ok/cancel btn's) + + // widgets components + virtual void prDrawSidePane(float vHeight); // draw side pane + virtual bool prSelectableItem(int vidx, + std::shared_ptr vInfos, + bool vSelected, const char* vFmt, ...); // draw a custom selectable behavior item + virtual void prDrawFileListView(ImVec2 vSize); // draw file list view (default mode) + +#ifdef USE_THUMBNAILS + virtual void prDrawThumbnailsListView(ImVec2 vSize); // draw file list view with small thumbnails on the same line + virtual void prDrawThumbnailsGridView(ImVec2 vSize); // draw a grid of small thumbnails +#endif + + // to be called only by these function and theirs overrides + // - prDrawFileListView + // - prDrawThumbnailsListView + // - prDrawThumbnailsGridView + void prBeginFileColorIconStyle( + std::shared_ptr vFileInfos, + bool& vOutShowColor, + std::string& vOutStr, + ImFont** vOutFont); // begin style apply of filter with color an icon if any + void prEndFileColorIconStyle( + const bool& vShowColor, + ImFont* vFont); // end style apply of filter + }; +} + +typedef IGFD::UserDatas IGFDUserDatas; +typedef IGFD::PaneFun IGFDPaneFun; +typedef IGFD::FileDialog ImGuiFileDialog; +#else // __cplusplus +typedef struct ImGuiFileDialog ImGuiFileDialog; +typedef struct IGFD_Selection_Pair IGFD_Selection_Pair; +typedef struct IGFD_Selection IGFD_Selection; +#endif // __cplusplus + +// C Interface + +#include + +#if defined _WIN32 || defined __CYGWIN__ +#ifdef IMGUIFILEDIALOG_NO_EXPORT +#define API +#else // IMGUIFILEDIALOG_NO_EXPORT +#define API __declspec(dllexport) +#endif // IMGUIFILEDIALOG_NO_EXPORT +#else // defined _WIN32 || defined __CYGWIN__ +#ifdef __GNUC__ +#define API __attribute__((__visibility__("default"))) +#else // __GNUC__ +#define API +#endif // __GNUC__ +#endif // defined _WIN32 || defined __CYGWIN__ + +#ifdef __cplusplus +#define IMGUIFILEDIALOG_API extern "C" API +#else // __cplusplus +#define IMGUIFILEDIALOG_API +#endif // __cplusplus + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +///// C API //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + +struct IGFD_Selection_Pair +{ + char* fileName; + char* filePathName; +}; + +IMGUIFILEDIALOG_API IGFD_Selection_Pair IGFD_Selection_Pair_Get(); // return an initialized IGFD_Selection_Pair +IMGUIFILEDIALOG_API void IGFD_Selection_Pair_DestroyContent(IGFD_Selection_Pair* vSelection_Pair); // destroy the content of a IGFD_Selection_Pair + +struct IGFD_Selection +{ + IGFD_Selection_Pair* table; // 0 + size_t count; // 0U +}; + +IMGUIFILEDIALOG_API IGFD_Selection IGFD_Selection_Get(); // return an initialized IGFD_Selection +IMGUIFILEDIALOG_API void IGFD_Selection_DestroyContent(IGFD_Selection* vSelection); // destroy the content of a IGFD_Selection + +// constructor / destructor +IMGUIFILEDIALOG_API ImGuiFileDialog* IGFD_Create(void); // create the filedialog context +IMGUIFILEDIALOG_API void IGFD_Destroy(ImGuiFileDialog* vContext); // destroy the filedialog context + +typedef void (*IGFD_PaneFun)(const char*, void*, bool*); // callback fucntion for display the pane + +#ifdef USE_THUMBNAILS +typedef void (*IGFD_CreateThumbnailFun)(IGFD_Thumbnail_Info*); // callback function for create thumbnail texture +typedef void (*IGFD_DestroyThumbnailFun)(IGFD_Thumbnail_Info*); // callback fucntion for destroy thumbnail texture +#endif // USE_THUMBNAILS + +IMGUIFILEDIALOG_API void IGFD_OpenDialog( // open a standard dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenDialog2( // open a standard dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file path name (path and filename witl be extracted from it) + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenPaneDialog( // open a standard dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenPaneDialog2( // open a standard dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file name (path and filename witl be extracted from it) + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenModal( // open a modal dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenModal2( // open a modal dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file name (path and filename witl be extracted from it) + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenPaneModal( // open a modal dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API void IGFD_OpenPaneModal2( // open a modal dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file name (path and filename witl be extracted from it) + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + +IMGUIFILEDIALOG_API bool IGFD_DisplayDialog( // Display the dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog to display (if not the same key as defined by OpenDialog/Modal => no opening) + ImGuiWindowFlags vFlags, // ImGuiWindowFlags + ImVec2 vMinSize, // mininmal size contraint for the ImGuiWindow + ImVec2 vMaxSize); // maximal size contraint for the ImGuiWindow + +IMGUIFILEDIALOG_API void IGFD_CloseDialog( // Close the dialog + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API bool IGFD_IsOk( // true => Dialog Closed with Ok result / false : Dialog closed with cancel result + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API bool IGFD_WasKeyOpenedThisFrame( // say if the dialog key was already opened this frame + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey); + +IMGUIFILEDIALOG_API bool IGFD_WasOpenedThisFrame( // say if the dialog was already opened this frame + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API bool IGFD_IsKeyOpened( // say if the dialog key is opened + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vCurrentOpenedKey); // the dialog key + +IMGUIFILEDIALOG_API bool IGFD_IsOpened( // say if the dialog is opened somewhere + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API IGFD_Selection IGFD_GetSelection( // Open File behavior : will return selection via a map + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API char* IGFD_GetFilePathName( // Save File behavior : will always return the content of the field with current filter extention and current path + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API char* IGFD_GetCurrentFileName( // Save File behavior : will always return the content of the field with current filter extention + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API char* IGFD_GetCurrentPath( // will return current path + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API char* IGFD_GetCurrentFilter( // will return selected filter + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API void* IGFD_GetUserDatas( // will return user datas send with Open Dialog/Modal + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API void IGFD_SetFileStyle( // SetExtention datas for have custom display of particular file type + ImGuiFileDialog* vContext, // ImGuiFileDialog context + IGFD_FileStyleFlags vFileStyleFlags, // file style type + const char* vFilter, // extention filter to tune + ImVec4 vColor, // wanted color for the display of the file with extention filter + const char* vIconText, // wanted text or icon of the file with extention filter (can be sued with font icon) + ImFont* vFont); // wanted font pointer + +IMGUIFILEDIALOG_API void IGFD_SetFileStyle2( // SetExtention datas for have custom display of particular file type + ImGuiFileDialog* vContext, // ImGuiFileDialog context + IGFD_FileStyleFlags vFileStyleFlags, // file style type + const char* vFilter, // extention filter to tune + float vR, float vG, float vB, float vA, // wanted color channels RGBA for the display of the file with extention filter + const char* vIconText, // wanted text or icon of the file with extention filter (can be sued with font icon) + ImFont* vFont); // wanted font pointer + +IMGUIFILEDIALOG_API bool IGFD_GetFileStyle( + ImGuiFileDialog* vContext, // ImGuiFileDialog context + IGFD_FileStyleFlags vFileStyleFlags, // file style type + const char* vFilter, // extention filter (same as used in SetExtentionInfos) + ImVec4* vOutColor, // color to retrieve + char** vOutIconText, // icon or text to retrieve + ImFont** vOutFont); // font pointer to retrived + +IMGUIFILEDIALOG_API void IGFD_ClearFilesStyle( // clear extentions setttings + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API void SetLocales( // set locales to use before and after display + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const int vCategory, // set local category + const char* vBeginLocale, // locale to use at begining of the dialog display + const char* vEndLocale); // locale to set at end of the dialog display + +#ifdef USE_EXPLORATION_BY_KEYS +IMGUIFILEDIALOG_API void IGFD_SetFlashingAttenuationInSeconds( // set the flashing time of the line in file list when use exploration keys + ImGuiFileDialog* vContext, // ImGuiFileDialog context + float vAttenValue); // set the attenuation (from flashed to not flashed) in seconds +#endif + +#ifdef USE_BOOKMARK +IMGUIFILEDIALOG_API char* IGFD_SerializeBookmarks( // serialize bookmarks : return bookmark buffer to save in a file + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +IMGUIFILEDIALOG_API void IGFD_DeserializeBookmarks( // deserialize bookmarks : load bookmar buffer to load in the dialog (saved from previous use with SerializeBookmarks()) + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vBookmarks); // bookmark buffer to load +#endif + +#ifdef USE_THUMBNAILS +IMGUIFILEDIALOG_API void SetCreateThumbnailCallback( // define the callback for create the thumbnails texture + ImGuiFileDialog* vContext, // ImGuiFileDialog context + IGFD_CreateThumbnailFun vCreateThumbnailFun); // the callback for create the thumbnails texture + +IMGUIFILEDIALOG_API void SetDestroyThumbnailCallback( // define the callback for destroy the thumbnails texture + ImGuiFileDialog* vContext, // ImGuiFileDialog context + IGFD_DestroyThumbnailFun vDestroyThumbnailFun); // the callback for destroy the thumbnails texture + +IMGUIFILEDIALOG_API void ManageGPUThumbnails( // must be call in gpu zone, possibly a thread, will call the callback for create / destroy the textures + ImGuiFileDialog* vContext); // ImGuiFileDialog context +#endif // USE_THUMBNAILS + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + +#endif // IMGUIFILEDIALOG_H diff --git a/extern/igfd/ImGuiFileDialogConfig.h b/extern/igfd/ImGuiFileDialogConfig.h new file mode 100644 index 00000000..3416b029 --- /dev/null +++ b/extern/igfd/ImGuiFileDialogConfig.h @@ -0,0 +1,97 @@ +#pragma once + +// uncomment and modify defines under for customize ImGuiFileDialog + +//this options need c++17 +//#define USE_STD_FILESYSTEM + +//#define MAX_FILE_DIALOG_NAME_BUFFER 1024 +//#define MAX_PATH_BUFFER_SIZE 1024 + +//#define USE_THUMBNAILS +//the thumbnail generation use the stb_image and stb_resize lib who need to define the implementation +//btw if you already use them in your app, you can have compiler error due to "implemntation found in double" +//so uncomment these line for prevent the creation of implementation of these libs again +//#define DONT_DEFINE_AGAIN__STB_IMAGE_IMPLEMENTATION +//#define DONT_DEFINE_AGAIN__STB_IMAGE_RESIZE_IMPLEMENTATION +//#define IMGUI_RADIO_BUTTON RadioButton +//#define DisplayMode_ThumbailsList_ImageHeight 32.0f +//#define tableHeaderFileThumbnailsString "Thumbnails" +//#define DisplayMode_FilesList_ButtonString "FL" +//#define DisplayMode_FilesList_ButtonHelp "File List" +//#define DisplayMode_ThumbailsList_ButtonString "TL" +//#define DisplayMode_ThumbailsList_ButtonHelp "Thumbnails List" +// todo +//#define DisplayMode_ThumbailsGrid_ButtonString "TG" +//#define DisplayMode_ThumbailsGrid_ButtonHelp "Thumbnails Grid" + + +//#define USE_EXPLORATION_BY_KEYS +// this mapping by default is for GLFW but you can use another +//#include +// Up key for explore to the top +//#define IGFD_KEY_UP GLFW_KEY_UP +// Down key for explore to the bottom +//#define IGFD_KEY_DOWN GLFW_KEY_DOWN +// Enter key for open directory +//#define IGFD_KEY_ENTER GLFW_KEY_ENTER +// BackSpace for comming back to the last directory +//#define IGFD_KEY_BACKSPACE GLFW_KEY_BACKSPACE + +// by ex you can quit the dialog by pressing the key excape +//#define USE_DIALOG_EXIT_WITH_KEY +//#define IGFD_EXIT_KEY GLFW_KEY_ESCAPE + +// widget +// filter combobox width +//#define FILTER_COMBO_WIDTH 120.0f +// button widget use for compose path +//#define IMGUI_PATH_BUTTON ImGui::Button +// standard button +//#define IMGUI_BUTTON ImGui::Button + +// locales string +//#define createDirButtonString "+" +//#define okButtonString " OK" +//#define cancelButtonString " Cancel" +//#define resetButtonString "R" +//#define drivesButtonString "Drives" +//#define editPathButtonString "E" +//#define searchString "Search" +//#define dirEntryString "[DIR] " +//#define linkEntryString "[LINK] " +//#define fileEntryString "[FILE] " +//#define fileNameString "File Name : " +//#define dirNameString "Directory Path :" +//#define buttonResetSearchString "Reset search" +//#define buttonDriveString "Drives" +//#define buttonEditPathString "Edit path\nYou can also right click on path buttons" +//#define buttonResetPathString "Reset to current directory" +//#define buttonCreateDirString "Create Directory" +//#define OverWriteDialogTitleString "The file Already Exist !" +//#define OverWriteDialogMessageString "Would you like to OverWrite it ?" +//#define OverWriteDialogConfirmButtonString "Confirm" +//#define OverWriteDialogCancelButtonString "Cancel" + +// DateTimeFormat +// see strftime functionin for customize +// "%Y/%m/%d %H:%M" give 2021:01:22 11:47 +// "%Y/%m/%d %i:%M%p" give 2021:01:22 11:45PM +//#define DateTimeFormat "%Y/%m/%d %i:%M%p" + +// theses icons will appear in table headers +//#define USE_CUSTOM_SORTING_ICON +//#define tableHeaderAscendingIcon "A|" +//#define tableHeaderDescendingIcon "D|" +//#define tableHeaderFileNameString " File name" +//#define tableHeaderFileTypeString " Type" +//#define tableHeaderFileSizeString " Size" +//#define tableHeaderFileDateTimeString " Date" + +//#define USE_BOOKMARK +//#define bookmarkPaneWith 150.0f +//#define IMGUI_TOGGLE_BUTTON ToggleButton +//#define bookmarksButtonString "Bookmark" +//#define bookmarksButtonHelpString "Bookmark" +//#define addBookmarkButtonString "+" +//#define removeBookmarkButtonString "-" diff --git a/extern/igfd/LICENSE b/extern/igfd/LICENSE new file mode 100644 index 00000000..bd17d951 --- /dev/null +++ b/extern/igfd/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2018-2020 Stephane Cuillerdier (aka Aiekick) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/extern/igfd/README.md b/extern/igfd/README.md new file mode 100644 index 00000000..f7634a38 --- /dev/null +++ b/extern/igfd/README.md @@ -0,0 +1,928 @@ +[](https://github.com/aiekick/ImGuiFileDialog/actions?query=workflow%3AWin) +[](https://github.com/aiekick/ImGuiFileDialog/actions?query=workflow%3ALinux) +[](https://github.com/aiekick/ImGuiFileDialog/actions?query=workflow%3AOsx) + +# ImGuiFileDialog + +## Purpose + +ImGuiFileDialog is a file selection dialog built for (and using only) [Dear ImGui](https://github.com/ocornut/imgui). + +My primary goal was to have a custom pane with widgets according to file extension. This was not possible using other +solutions. + +## Structure + +* The library is in [Lib_Only branch](https://github.com/aiekick/ImGuiFileDialog/tree/Lib_Only) +* A demo app can be found the [master branch](https://github.com/aiekick/ImGuiFileDialog/tree/master) + +This library is designed to be dropped into your source code rather than compiled separately. + +From your project directory: + +``` +mkdir lib +cd lib +git clone https://github.com/aiekick/ImGuiFileDialog.git +git checkout Lib_Only +``` + +These commands create a `lib` directory where you can store any third-party dependencies used in your project, downloads +the ImGuiFileDialog git repository and checks out the Lib_Only branch where the actual library code is located. + +Add `lib/ImGuiFileDialog/ImGuiFileDialog.cpp` to your build system and include +`lib/ImGuiFileDialog/ImGuiFileDialog.h` in your source code. ImGuiFileLib will compile with and be included directly in +your executable file. + +If, for example, your project uses cmake, look for a line like `add_executable(my_project_name main.cpp)` +and change it to `add_executable(my_project_name lib/ImGuiFileDialog/ImGuiFileDialog.cpp main.cpp)`. This tells the +compiler where to find the source code declared in `ImGuiFileDialog.h` which you included in your own source code. + +## Requirements: + +You must also, of course, have added [Dear ImGui](https://github.com/ocornut/imgui) to your project for this to work at +all. + +[dirent v1.23](https://github.com/tronkko/dirent/tree/v1.23) is required to use ImGuiFileDialog under Windows. It is +included in the Lib_Only branch for your convenience. + +## Features + +- Separate system for call and display + - Can have many function calls with different parameters for one display function, for example +- Can create a custom pane with any widgets via function binding + - This pane can block the validation of the dialog + - Can also display different things according to current filter and UserDatas +- Advanced file style for file/dir/link coloring / icons / font +- Multi-selection (ctrl/shift + click) : + - 0 => Infinite + - 1 => One file (default) + - n => n files +- Compatible with MacOs, Linux, Windows + - Windows version can list drives +- Supports modal or standard dialog types +- Select files or directories +- Filter groups and custom filter names +- Keyboard navigation (arrows, backspace, enter) +- Exploring by entering characters (case insensitive) +- Directory bookmarks +- Directory manual entry (right click on any path element) +- Optional 'Confirm to Overwrite" dialog if file exists +- Thumbnails Display (agnostic way for compatibility with any backend, sucessfully tested with OpenGl and Vulkan) +- C Api (succesfully tested with CimGui) + +## Singleton Pattern vs. Multiple Instances + +### Single Dialog : + +If you only need to display one file dialog at a time, use ImGuiFileDialog's singleton pattern to avoid explicitly +declaring an object: + +```cpp +ImGuiFileDialog::Instance()->method_of_your_choice(); +``` + +### Multiple Dialogs : + +If you need to have multiple file dialogs open at once, declare each dialog explicity: + +```cpp +ImGuiFileDialog instance_a; +instance_a.method_of_your_choice(); +ImGuiFileDialog instance_b; +instance_b.method_of_your_choice(); +``` + +## Simple Dialog : + +```cpp +void drawGui() +{ + // open Dialog Simple + if (ImGui::Button("Open File Dialog")) + ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".cpp,.h,.hpp", "."); + + // display + if (ImGuiFileDialog::Instance()->Display("ChooseFileDlgKey")) + { + // action if OK + if (ImGuiFileDialog::Instance()->IsOk()) + { + std::string filePathName = ImGuiFileDialog::Instance()->GetFilePathName(); + std::string filePath = ImGuiFileDialog::Instance()->GetCurrentPath(); + // action + } + + // close + ImGuiFileDialog::Instance()->Close(); + } +} +``` + +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/dlg_simple.gif) + +## Directory Chooser : + +To have a directory chooser, set the file extension filter to nullptr: + +```cpp +ImGuiFileDialog::Instance()->OpenDialog("ChooseDirDlgKey", "Choose a Directory", nullptr, "."); +``` + +In this mode you can select any directory with one click and open a directory with a double-click. + +![directoryChooser](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/directoryChooser.gif) + +## Dialog with Custom Pane : + +The signature of the custom pane callback is: + +### for C++ : + +```cpp +void(const char *vFilter, IGFDUserDatas vUserDatas, bool *vCantContinue) +``` + +### for C : + +```c +void(const char *vFilter, void* vUserDatas, bool *vCantContinue) +``` + +### Example : + +```cpp +static bool canValidateDialog = false; +inline void InfosPane(cosnt char *vFilter, IGFDUserDatas vUserDatas, bool *vCantContinue) // if vCantContinue is false, the user cant validate the dialog +{ + ImGui::TextColored(ImVec4(0, 1, 1, 1), "Infos Pane"); + ImGui::Text("Selected Filter : %s", vFilter.c_str()); + if (vUserDatas) + ImGui::Text("UserDatas : %s", vUserDatas); + ImGui::Checkbox("if not checked you cant validate the dialog", &canValidateDialog); + if (vCantContinue) + *vCantContinue = canValidateDialog; +} + +void drawGui() +{ + // open Dialog with Pane + if (ImGui::Button("Open File Dialog with a custom pane")) + ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".cpp,.h,.hpp", + ".", "", std::bind(&InfosPane, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), 350, 1, UserDatas("InfosPane")); + + // display and action if ok + if (ImGuiFileDialog::Instance()->Display("ChooseFileDlgKey")) + { + if (ImGuiFileDialog::Instance()->IsOk()) + { + std::string filePathName = ImGuiFileDialog::Instance()->GetFilePathName(); + std::string filePath = ImGuiFileDialog::Instance()->GetCurrentPath(); + std::string filter = ImGuiFileDialog::Instance()->GetCurrentFilter(); + // here convert from string because a string was passed as a userDatas, but it can be what you want + std::string userDatas; + if (ImGuiFileDialog::Instance()->GetUserDatas()) + userDatas = std::string((const char*)ImGuiFileDialog::Instance()->GetUserDatas()); + auto selection = ImGuiFileDialog::Instance()->GetSelection(); // multiselection + + // action + } + // close + ImGuiFileDialog::Instance()->Close(); + } +} +``` + +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/doc/dlg_with_pane.gif) + +## File Style : Custom icons and colors by extension + +You can define style for files/dirs/links in many ways : + +the style can be colors, icons and fonts + +the general form is : +```cpp +ImGuiFileDialog::Instance()->SetFileStyle(styleType, criteria, color, icon, font); + +styleType can be thoses : + +IGFD_FileStyleByTypeFile // define style for all files +IGFD_FileStyleByTypeDir // define style for all dir +IGFD_FileStyleByTypeLink // define style for all link +IGFD_FileStyleByExtention // define style by extention, for files or links +IGFD_FileStyleByFullName // define style for particular file/dir/link full name (filename + extention) +IGFD_FileStyleByContainedInFullName // define style for file/dir/link when criteria is contained in full name +``` + +ImGuiFileDialog accepts icon font macros as well as text tags for file types. + +[ImGuIFontStudio](https://github.com/aiekick/ImGuiFontStudio) is useful here. I wrote it to make it easy to create +custom icon sets for use with Dear ImGui. + +It is inspired by [IconFontCppHeaders](https://github.com/juliettef/IconFontCppHeaders), which can also be used with +ImGuiFileDialog. + +samples : + +```cpp +// define style by file extention and Add an icon for .png files +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".png", ImVec4(0.0f, 1.0f, 1.0f, 0.9f), ICON_IGFD_FILE_PIC, font1); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".gif", ImVec4(0.0f, 1.0f, 0.5f, 0.9f), "[GIF]"); + +// define style for all directories +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir, "", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FOLDER); +// can be for a specific directory +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir, ".git", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FOLDER); + +// define style for all files +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile, "", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FILE); +// can be for a specific file +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile, ".git", ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FILE); + +// define style for all links +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeLink, "", ImVec4(0.5f, 1.0f, 0.9f, 0.9f)); +// can be for a specific link +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeLink, "Readme.md", ImVec4(0.5f, 1.0f, 0.9f, 0.9f)); + +// define style for any files/dirs/links by fullname +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByFullName, "doc", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_FILE_PIC); + +// define style by file who are containing this string +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByContainedInFullName, ".git", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_BOOKMARK); + +all of theses can be miwed with IGFD_FileStyleByTypeDir / IGFD_FileStyleByTypeFile / IGFD_FileStyleByTypeLink +like theses by ex : +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir | IGFD_FileStyleByContainedInFullName, ".git", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_BOOKMARK); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile | IGFD_FileStyleByFullName, "cmake", ImVec4(0.5f, 0.8f, 0.5f, 0.9f), ICON_IGFD_SAVE); +``` + +this sample code of [master/main.cpp](https://github.com/aiekick/ImGuiFileDialog/blob/master/main.cpp) produce the picture above : + +```cpp +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".cpp", ImVec4(1.0f, 1.0f, 0.0f, 0.9f)); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".h", ImVec4(0.0f, 1.0f, 0.0f, 0.9f)); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".hpp", ImVec4(0.0f, 0.0f, 1.0f, 0.9f)); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".md", ImVec4(1.0f, 0.0f, 1.0f, 0.9f)); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".png", ImVec4(0.0f, 1.0f, 1.0f, 0.9f), ICON_IGFD_FILE_PIC); // add an icon for the filter type +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtention, ".gif", ImVec4(0.0f, 1.0f, 0.5f, 0.9f), "[GIF]"); // add an text for a filter type +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir, nullptr, ImVec4(0.5f, 1.0f, 0.9f, 0.9f), ICON_IGFD_FOLDER); // for all dirs +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile, "CMakeLists.txt", ImVec4(0.1f, 0.5f, 0.5f, 0.9f), ICON_IGFD_ADD); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByFullName, "doc", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_FILE_PIC); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir | IGFD_FileStyleByContainedInFullName, ".git", ImVec4(0.9f, 0.2f, 0.0f, 0.9f), ICON_IGFD_BOOKMARK); +ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile | IGFD_FileStyleByContainedInFullName, ".git", ImVec4(0.5f, 0.8f, 0.5f, 0.9f), ICON_IGFD_SAVE); +``` + +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/color_filter.png) + +## Filter Collections + +You can define a custom filter name that corresponds to a group of filters using this syntax: + +```custom_name1{filter1,filter2,filter3},custom_name2{filter1,filter2},filter1``` + +When you select custom_name1, filters 1 to 3 will be applied. The characters `{` and `}` are reserved. Don't use them +for filter names. + +this code : + +```cpp +const char *filters = "Source files (*.cpp *.h *.hpp){.cpp,.h,.hpp},Image files (*.png *.gif *.jpg *.jpeg){.png,.gif,.jpg,.jpeg},.md"; +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", ICON_IMFDLG_FOLDER_OPEN " Choose a File", filters, "."); +``` + +will produce : +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/collectionFilters.gif) + +## Multi Selection + +You can define in OpenDialog/OpenModal call the count file you want to select : + +- 0 => infinite +- 1 => one file only (default) +- n => n files only + +See the define at the end of these funcs after path. + +```cpp +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".*,.cpp,.h,.hpp", "."); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose 1 File", ".*,.cpp,.h,.hpp", ".", 1); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose 5 File", ".*,.cpp,.h,.hpp", ".", 5); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose many File", ".*,.cpp,.h,.hpp", ".", 0); +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".png,.jpg", + ".", "", std::bind(&InfosPane, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), 350, 1, "SaveFile"); // 1 file +``` + +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/multiSelection.gif) + +## File Dialog Constraints + +You can set the minimum and/or maximum size of the dialog: + +```cpp +ImVec2 maxSize = ImVec2((float)display_w, (float)display_h); // The full display area +ImVec2 minSize = maxSize * 0.5f; // Half the display area +ImGuiFileDialog::Instance()->Display("ChooseFileDlgKey", ImGuiWindowFlags_NoCollapse, minSize, maxSize); +``` + +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/dialog_constraints.gif) + +## Detail View Mode + +Dear ImGui just released an improved table API. If your downloaded version of Dear ImGui includes the beta version of +table support (included for some time now) you can enable table support by uncommenting `#define USE_IMGUI_TABLES` in +you custom config file (CustomImGuiFileDialogConfig.h) + +If your version of Dear ImGui has finalized tables support, it will be enabled by default. +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/imgui_tables_branch.gif) + +## Exploring by keys + +You can activate this feature by uncommenting `#define USE_EXPLORATION_BY_KEYS` +in your custom config file (CustomImGuiFileDialogConfig.h) + +You can also uncomment the next lines to define navigation keys: + +* IGFD_KEY_UP => Up key for explore to the top +* IGFD_KEY_DOWN => Down key for explore to the bottom +* IGFD_KEY_ENTER => Enter key for open directory +* IGFD_KEY_BACKSPACE => BackSpace for comming back to the last directory + +You can also jump to a point in the file list by pressing the corresponding key of the first filename character. + +![alt text](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/explore_ny_keys.gif) + +As you see the current item is flashed by default for 1 second. You can define the flashing lifetime with the function + +```cpp +ImGuiFileDialog::Instance()->SetFlashingAttenuationInSeconds(1.0f); +``` + +## Bookmarks + +You can create/edit/call path bookmarks and load/save them. + +Activate this feature by uncommenting: `#define USE_BOOKMARK` in your custom config file (CustomImGuiFileDialogConfig.h) + +More customization options: + +```cpp +#define bookmarkPaneWith 150.0f => width of the bookmark pane +#define IMGUI_TOGGLE_BUTTON ToggleButton => customize the Toggled button (button stamp must be : (const char* label, bool *toggle) +#define bookmarksButtonString "Bookmark" => the text in the toggle button +#define bookmarksButtonHelpString "Bookmark" => the helper text when mouse over the button +#define addBookmarkButtonString "+" => the button for add a bookmark +#define removeBookmarkButtonString "-" => the button for remove the selected bookmark +``` + +* You can select each bookmark to edit the displayed name corresponding to a path +* Double-click on the label to apply the bookmark + +![bookmarks.gif](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/bookmarks.gif) + +You can also serialize/deserialize bookmarks (for example to load/save from/to a file): +```cpp +Load => ImGuiFileDialog::Instance()->DeserializeBookmarks(bookmarString); +Save => std::string bookmarkString = ImGuiFileDialog::Instance()->SerializeBookmarks(); +``` +(please see example code for details) + +## Path Edition : + +Right clicking on any path element button allows the user to manually edit the path from that portion of the tree. +Pressing the completion key (GLFW uses `enter` by default) validates the new path. Pressing the cancel key (GLFW +uses`escape` by default) cancels the manual entry and restores the original path. + +Here's the manual entry operation in action: +![inputPathEdition.gif](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/inputPathEdition.gif) + +## Confirm Overwrite Dialog : + +If you want avoid overwriting files after selection, ImGuiFileDialog can show a dialog to confirm or cancel the +operation. + +To do so, define the flag ImGuiFileDialogFlags_ConfirmOverwrite in your call to OpenDialog/OpenModal. + +By default this flag is not set since there is no pre-defined way to define if a dialog will be for Open or Save +behavior. (by design! :) ) + +Example code For Standard Dialog : + +```cpp +ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", + ICON_IGFD_SAVE " Choose a File", filters, + ".", "", 1, nullptr, ImGuiFileDialogFlags_ConfirmOverwrite); +``` + +Example code For Modal Dialog : + +```cpp +ImGuiFileDialog::Instance()->OpenModal("ChooseFileDlgKey", + ICON_IGFD_SAVE " Choose a File", filters, + ".", "", 1, nullptr, ImGuiFileDialogFlags_ConfirmOverwrite); +``` + +This dialog will only verify the file in the file field, not with `GetSelection()`. + +The confirmation dialog will be a non-movable modal (input blocking) dialog displayed in the middle of the current +ImGuiFileDialog window. + +As usual, you can customize the dialog in your custom config file (CustomImGuiFileDialogConfig.h in this example) + +Uncomment these line for customization options: + +```cpp +//#define OverWriteDialogTitleString "The file Already Exist !" +//#define OverWriteDialogMessageString "Would you like to OverWrite it ?" +//#define OverWriteDialogConfirmButtonString "Confirm" +//#define OverWriteDialogCancelButtonString "Cancel" +``` + +See the result : + +![ConfirmToOverWrite.gif](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/ConfirmToOverWrite.gif) + +## Open / Save dialog Behavior : + +ImGuiFileDialog uses the same code internally for Open and Save dialogs. To distinguish between them access the various +data return functions depending on what the dialog is doing. + +When selecting an existing file (for example, a Load or Open dialog), use + +```cpp +std::map GetSelection(); // Returns selection via a map +UserDatas GetUserDatas(); // Get user data provided by the Open dialog +``` + +To selecting a new file (for example, a Save As... dialog), use: + +```cpp +std::string GetFilePathName(); // Returns the content of the selection field with current file extension and current path +std::string GetCurrentFileName(); // Returns the content of the selection field with current file extension but no path +std::string GetCurrentPath(); // Returns current path only +std::string GetCurrentFilter(); // The file extension +``` + +## Thumbnails Display + +You can now, display thumbnails of pictures. + +![thumbnails.gif](https://github.com/aiekick/ImGuiFileDialog/blob/master/doc/thumbnails.gif) + +The file resize use stb/image so the following files extentions are supported : + * .png (tested sucessfully) + * .bmp (tested sucessfully) + * .tga (tested sucessfully) + * .jpg (tested sucessfully) + * .jpeg (tested sucessfully) + * .gif (tested sucessfully_ but not animation just first frame) + * .psd (not tested) + * .pic (not tested) + * .ppm (not tested) + * .pgm (not tested) + +Corresponding to your backend (ex : OpenGl) you need to define two callbacks : +* the first is a callback who will be called by ImGuiFileDialog for create the backend texture +* the second is a callback who will be called by ImGuiFileDialog for destroy the backend texture + +After that you need to call the function who is responsible to create / destroy the textures. +this function must be called in your GPU Rendering zone for avoid destroying of used texture. +if you do that at the same place of your imgui code, some backend can crash your app, by ex with vulkan. + +ex, for opengl : + +```cpp +// Create thumbnails texture +ImGuiFileDialog::Instance()->SetCreateThumbnailCallback([](IGFD_Thumbnail_Info *vThumbnail_Info) -> void +{ + if (vThumbnail_Info && + vThumbnail_Info->isReadyToUpload && + vThumbnail_Info->textureFileDatas) + { + GLuint textureId = 0; + glGenTextures(1, &textureId); + vThumbnail_Info->textureID = (void*)textureId; + + glBindTexture(GL_TEXTURE_2D, textureId); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, + (GLsizei)vThumbnail_Info->textureWidth, (GLsizei)vThumbnail_Info->textureHeight, + 0, GL_RGBA, GL_UNSIGNED_BYTE, vThumbnail_Info->textureFileDatas); + glFinish(); + glBindTexture(GL_TEXTURE_2D, 0); + + delete[] vThumbnail_Info->textureFileDatas; + vThumbnail_Info->textureFileDatas = nullptr; + + vThumbnail_Info->isReadyToUpload = false; + vThumbnail_Info->isReadyToDisplay = true; + } +}); +``` + +```cpp +// Destroy thumbnails texture +ImGuiFileDialog::Instance()->SetDestroyThumbnailCallback([](IGFD_Thumbnail_Info* vThumbnail_Info) +{ + if (vThumbnail_Info) + { + GLuint texID = (GLuint)vThumbnail_Info->textureID; + glDeleteTextures(1, &texID); + glFinish(); + } +}); +``` + +```cpp +// GPU Rendering Zone // To call for Create/ Destroy Textures +ImGuiFileDialog::Instance()->ManageGPUThumbnails(); +``` + +## How to Integrate ImGuiFileDialog in your project + +### Customize ImGuiFileDialog : + +You can customize many aspects of ImGuiFileDialog by overriding `ImGuiFileDialogConfig.h`. + +To enable your customizations, define the preprocessor directive CUSTOM_IMGUIFILEDIALOG_CONFIG with the path of your +custom config file. This path must be relative to the directory where you put the ImGuiFileDialog module. + +This operation is demonstrated in `CustomImGuiFileDialog.h` in the example project to: + +* Have a custom icon font instead of labels for buttons or message titles +* Customize the button text (the button call signature must be the same, by the way! :) + +The custom icon font used in the example code ([CustomFont.cpp](CustomFont.cpp) and [CustomFont.h](CustomFont.h)) was made +with [ImGuiFontStudio](https://github.com/aiekick/ImGuiFontStudio), which I wrote. :) + +ImGuiFontStudio uses ImGuiFileDialog! Check it out. + +## Api's C/C++ : + +### C++. + +this is the base API : + +```cpp +static FileDialog* Instance() // Singleton for easier accces form anywhere but only one dialog at a time + +FileDialog(); // ImGuiFileDialog Constructor. can be used for have many dialog at same tiem (not possible with singleton) + +// standard dialog +void OpenDialog( // open simple dialog (path and fileName can be specified) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +void OpenDialog( // open simple dialog (path and filename are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +// with pane +void OpenDialog( // open dialog with custom right pane (path and fileName can be specified) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +void OpenDialog( // open dialog with custom right pane (path and filename are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +// modal dialog +void OpenModal( // open simple modal (path and fileName can be specified) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +void OpenModal( // open simple modal (path and fielname are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +// with pane +void OpenModal( // open modal with custom right pane (path and filename are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vPath, // path + const std::string& vFileName, // defaut file name + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +void OpenModal( // open modal with custom right pane (path and fielname are obtained from filePathName) + const std::string& vKey, // key dialog + const std::string& vTitle, // title + const char* vFilters, // filters + const std::string& vFilePathName, // file path name (will be decompsoed in path and fileName) + const PaneFun& vSidePane, // side pane + const float& vSidePaneWidth = 250.0f, // side pane width + const int& vCountSelectionMax = 1, // count selection max + UserDatas vUserDatas = nullptr, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags = 0); // ImGuiFileDialogFlags + +// Display / Close dialog form +bool Display( // Display the dialog. return true if a result was obtained (Ok or not) + const std::string& vKey, // key dialog to display (if not the same key as defined by OpenDialog/Modal => no opening) + ImGuiWindowFlags vFlags = ImGuiWindowFlags_NoCollapse, // ImGuiWindowFlags + ImVec2 vMinSize = ImVec2(0, 0), // mininmal size contraint for the ImGuiWindow + ImVec2 vMaxSize = ImVec2(FLT_MAX, FLT_MAX)); // maximal size contraint for the ImGuiWindow +void Close(); // close dialog + +// queries +bool WasOpenedThisFrame(const std::string& vKey); // say if the dialog key was already opened this frame +bool WasOpenedThisFrame(); // say if the dialog was already opened this frame +bool IsOpened(const std::string& vKey); // say if the key is opened +bool IsOpened(); // say if the dialog is opened somewhere +std::string GetOpenedKey(); // return the dialog key who is opened, return nothing if not opened + +// get result +bool IsOk(); // true => Dialog Closed with Ok result / false : Dialog closed with cancel result +std::map GetSelection(); // Open File behavior : will return selection via a map +std::string GetFilePathName(); // Save File behavior : will always return the content of the field with current filter extention and current path +std::string GetCurrentFileName(); // Save File behavior : will always return the content of the field with current filter extention +std::string GetCurrentPath(); // will return current path +std::string GetCurrentFilter(); // will return selected filter +UserDatas GetUserDatas(); // will return user datas send with Open Dialog/Modal + +// extentions displaying +void SetExtentionInfos( // SetExtention datas for have custom display of particular file type + const std::string& vFilter, // extention filter to tune + const FileExtentionInfosStruct& vInfos); // Filter Extention Struct who contain Color and Icon/Text for the display of the file with extention filter +void SetExtentionInfos( // SetExtention datas for have custom display of particular file type + const std::string& vFilter, // extention filter to tune + const ImVec4& vColor, // wanted color for the display of the file with extention filter + const std::string& vIcon = ""); // wanted text or icon of the file with extention filter +bool GetExtentionInfos( // GetExtention datas. return true is extention exist + const std::string& vFilter, // extention filter (same as used in SetExtentionInfos) + ImVec4 *vOutColor, // color to retrieve + std::string* vOutIcon = 0); // icon or text to retrieve +void ClearExtentionInfos(); // clear extentions setttings + +feature : USE_EXPLORATION_BY_KEYS +void SetFlashingAttenuationInSeconds( // set the flashing time of the line in file list when use exploration keys + float vAttenValue); // set the attenuation (from flashed to not flashed) in seconds + +feature : USE_BOOKMARK +std::string SerializeBookmarks(); // serialize bookmarks : return bookmark buffer to save in a file +void DeserializeBookmarks( // deserialize bookmarks : load bookmar buffer to load in the dialog (saved from previous use with SerializeBookmarks()) + const std::string& vBookmarks); // bookmark buffer to load + +feature : USE_THUMBNAILS +void SetCreateThumbnailCallback(const CreateThumbnailFun vCreateThumbnailFun); // define the texture creation callback +void SetDestroyThumbnailCallback(const DestroyThumbnailFun vCreateThumbnailFun); // define the texture destroy callback +void ManageGPUThumbnails(); // in gpu rendering zone, whill create or destroy textures +``` + +### C Api + +this api was sucessfully tested with CImGui + +```cpp + struct IGFD_Selection_Pair + { + char* fileName; + char* filePathName; + }; + + IMGUIFILEDIALOG_API IGFD_Selection_Pair IGFD_Selection_Pair_Get(); // return an initialized IGFD_Selection_Pair + IMGUIFILEDIALOG_API void IGFD_Selection_Pair_DestroyContent( + IGFD_Selection_Pair *vSelection_Pair); // destroy the content of a IGFD_Selection_Pair + + struct IGFD_Selection + { + IGFD_Selection_Pair* table; + size_t count; + }; + + IMGUIFILEDIALOG_API IGFD_Selection IGFD_Selection_Get(); // return an initialized IGFD_Selection + IMGUIFILEDIALOG_API void IGFD_Selection_DestroyContent( + IGFD_Selection* vSelection); // destroy the content of a IGFD_Selection + + // constructor / destructor + IMGUIFILEDIALOG_API ImGuiFileDialog* IGFD_Create(void); // create the filedialog context + IMGUIFILEDIALOG_API void IGFD_Destroy(ImGuiFileDialog *vContext); // destroy the filedialog context + + typedef void (*IGFD_PaneFun)(const char*, void*, bool*); // callback fucntion for display the pane + + IMGUIFILEDIALOG_API void IGFD_OpenDialog( // open a standard dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenDialog2( // open a standard dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file path name (path and filename witl be extracted from it) + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenPaneDialog( // open a standard dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenPaneDialog2( // open a standard dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file name (path and filename witl be extracted from it) + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenModal( // open a modal dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenModal2( // open a modal dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file name (path and filename witl be extracted from it) + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenPaneModal( // open a modal dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vPath, // path + const char* vFileName, // defaut file name + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API void IGFD_OpenPaneModal2( // open a modal dialog with pane + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog + const char* vTitle, // title + const char* vFilters, // filters/filter collections. set it to null for directory mode + const char* vFilePathName, // defaut file name (path and filename witl be extracted from it) + const IGFD_PaneFun vSidePane, // side pane + const float vSidePaneWidth, // side pane base width + const int vCountSelectionMax, // count selection max + void* vUserDatas, // user datas (can be retrieved in pane) + ImGuiFileDialogFlags vFlags); // ImGuiFileDialogFlags + + IMGUIFILEDIALOG_API bool IGFD_DisplayDialog( // Display the dialog + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey, // key dialog to display (if not the same key as defined by OpenDialog/Modal => no opening) + ImGuiWindowFlags vFlags, // ImGuiWindowFlags + ImVec2 vMinSize, // mininmal size contraint for the ImGuiWindow + ImVec2 vMaxSize); // maximal size contraint for the ImGuiWindow + + IMGUIFILEDIALOG_API void IGFD_CloseDialog( // Close the dialog + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API bool IGFD_IsOk( // true => Dialog Closed with Ok result / false : Dialog closed with cancel result + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API bool IGFD_WasKeyOpenedThisFrame( // say if the dialog key was already opened this frame + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vKey); + + IMGUIFILEDIALOG_API bool IGFD_WasOpenedThisFrame( // say if the dialog was already opened this frame + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API bool IGFD_IsKeyOpened( // say if the dialog key is opened + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vCurrentOpenedKey); // the dialog key + + IMGUIFILEDIALOG_API bool IGFD_IsOpened( // say if the dialog is opened somewhere + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API IGFD_Selection IGFD_GetSelection( // Open File behavior : will return selection via a map + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API char* IGFD_GetFilePathName( // Save File behavior : will always return the content of the field with current filter extention and current path + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API char* IGFD_GetCurrentFileName( // Save File behavior : will always return the content of the field with current filter extention + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API char* IGFD_GetCurrentPath( // will return current path + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API char* IGFD_GetCurrentFilter( // will return selected filter + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API void* IGFD_GetUserDatas( // will return user datas send with Open Dialog/Modal + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API void IGFD_SetExtentionInfos( // SetExtention datas for have custom display of particular file type + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vFilter, // extention filter to tune + ImVec4 vColor, // wanted color for the display of the file with extention filter + const char* vIconText); // wanted text or icon of the file with extention filter (can be sued with font icon) + + IMGUIFILEDIALOG_API void IGFD_SetExtentionInfos2( // SetExtention datas for have custom display of particular file type + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vFilter, // extention filter to tune + float vR, float vG, float vB, float vA, // wanted color channels RGBA for the display of the file with extention filter + const char* vIconText); // wanted text or icon of the file with extention filter (can be sued with font icon) + + IMGUIFILEDIALOG_API bool IGFD_GetExtentionInfos( + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vFilter, // extention filter (same as used in SetExtentionInfos) + ImVec4* vOutColor, // color to retrieve + char** vOutIconText); // icon or text to retrieve + + IMGUIFILEDIALOG_API void IGFD_ClearExtentionInfos( // clear extentions setttings + ImGuiFileDialog* vContext); // ImGuiFileDialog context + +feature : USE_EXPLORATION_BY_KEYS + IMGUIFILEDIALOG_API void IGFD_SetFlashingAttenuationInSeconds( // set the flashing time of the line in file list when use exploration keys + ImGuiFileDialog* vContext, // ImGuiFileDialog context + float vAttenValue); // set the attenuation (from flashed to not flashed) in seconds + +feature : USE_BOOKMARK + IMGUIFILEDIALOG_API char* IGFD_SerializeBookmarks( // serialize bookmarks : return bookmark buffer to save in a file + ImGuiFileDialog* vContext); // ImGuiFileDialog context + + IMGUIFILEDIALOG_API void IGFD_DeserializeBookmarks( // deserialize bookmarks : load bookmar buffer to load in the dialog (saved from previous use with SerializeBookmarks()) + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const char* vBookmarks); // bookmark buffer to load + +feature : USE_THUMBNAILS + IMGUIFILEDIALOG_API void SetCreateThumbnailCallback( // define the callback for create the thumbnails texture + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const IGFD_CreateThumbnailFun vCreateThumbnailFun); // the callback for create the thumbnails texture + + IMGUIFILEDIALOG_API void SetDestroyThumbnailCallback( // define the callback for destroy the thumbnails texture + ImGuiFileDialog* vContext, // ImGuiFileDialog context + const IGFD_DestroyThumbnailFun vDestroyThumbnailFun); // the callback for destroy the thumbnails texture + + IMGUIFILEDIALOG_API void ManageGPUThumbnails( // must be call in gpu zone, possibly a thread, will call the callback for create / destroy the textures + ImGuiFileDialog* vContext); // ImGuiFileDialog context +``` diff --git a/extern/igfd/dirent/ChangeLog b/extern/igfd/dirent/ChangeLog new file mode 100644 index 00000000..d79cea25 --- /dev/null +++ b/extern/igfd/dirent/ChangeLog @@ -0,0 +1,129 @@ +2018-05-08 Toni Rönkkö + + * Version 1.23.2: fixes bad scandir prototype. + +2017-08-27 Toni Rönkkö + + * Version 1.23: support readdir_r and scandir functions. + +2017-07-18 Toni Rönkkö + + * Created release branches v1.22 and v1.21 to Git. Published version + 1.22 at softagalleria.net. + +2016-09-11 Toni Rönkkö + + * Version 1.22: added support for CMake. Thanks to Paul Fultz II. + +2014-09-25 Toni Rönkkö + + * Version 1.21: compiles correctly under Open Watcom. Thanks to + Virgil Banowetz for a patch! + +2014-04-07 Toni Rönkkö + + * Version 1.20.1: the zip file from the previous version did not open + correctly with Microsoft's compressed folders. Thanks to Alexandre + for info! + +2014-03-17 Toni Ronkko + + * Version 1.20: dirent.h compiles correctly in 64-bit architecture. + Thanks to Aaron Simmons! + +2014-03-03 Toni Ronkko + + * Version 1.13.2: define DT_LNK for compatibility with Unix + programs. Thanks to Joel Bruick for suggestion! + +2013-01-27 Toni Ronkko + + * Version 1.13.1: patch from Edward Berner fixes set_errno() on + Windows NT 4.0. + + * Revised wcstombs() and mbstowcs() wrappers to make sure that they do + not write past their target string. + + * PATH_MAX from windows.h includes zero terminator so there is no + need to add one extra byte to variables and structures. + +2012-12-12 Toni Ronkko + + * Version 1.13: use the traditional 8+3 file naming scheme if a file + name cannot be represented in the default ANSI code page. Now + compiles again with MSVC 6.0. Thanks to Konstantin Khomoutov for + testing. + +2012-10-01 Toni Ronkko + + * Version 1.12.1: renamed wide-character DIR structure _wDIR to + _WDIR (with capital W) in order to maintain compatibility with MingW. + +2012-09-30 Toni Ronkko + + * Version 1.12: define PATH_MAX and NAME_MAX. Added wide-character + variants _wDIR, _wdirent, _wopendir(), _wreaddir(), _wclosedir() and + _wrewinddir(). Thanks to Edgar Buerkle and Jan Nijtmans for ideas + and code. + + * Now avoiding windows.h. This allows dirent.h to be integrated + more easily into programs using winsock. Thanks to Fernando + Azaldegui. + +2011-03-15 Toni Ronkko + + * Version 1.11: defined FILE_ATTRIBUTE_DEVICE for MSVC 6.0. + +2010-08-11 Toni Ronkko + + * Version 1.10: added d_type and d_namlen fields to dirent structure. + The former is especially useful for determining whether directory + entry represents a file or a directory. For more information, see + http://www.delorie.com/gnu/docs/glibc/libc_270.html + + * Improved conformance to the standards. For example, errno is now + set properly on failure and assert() is never used. Thanks to Peter + Brockam for suggestions. + + * Fixed a bug in rewinddir(): when using relative directory names, + change of working directory no longer causes rewinddir() to fail. + +2009-12-15 John Cunningham + + * Version 1.9: added rewinddir member function + +2008-01-18 Toni Ronkko + + * Version 1.8: Using FindFirstFileA and WIN32_FIND_DATAA to avoid + converting string between multi-byte and unicode representations. + This makes the code simpler and also allows the code to be compiled + under MingW. Thanks to Azriel Fasten for the suggestion. + +2007-03-04 Toni Ronkko + + * Bug fix: due to the strncpy_s() function this file only compiled in + Visual Studio 2005. Using the new string functions only when the + compiler version allows. + +2006-11-02 Toni Ronkko + + * Major update: removed support for Watcom C, MS-DOS and Turbo C to + simplify the file, updated the code to compile cleanly on Visual + Studio 2005 with both unicode and multi-byte character strings, + removed rewinddir() as it had a bug. + +2006-08-20 Toni Ronkko + + * Removed all remarks about MSVC 1.0, which is antiqued now. + Simplified comments by removing SGML tags. + +2002-05-14 Toni Ronkko + + * Embedded the function definitions directly to the header so that no + source modules need to be included in the Visual Studio project. + Removed all the dependencies to other projects so that this header + file can be used independently. + +1998-05-28 Toni Ronkko + + * First version. diff --git a/extern/igfd/dirent/LICENSE b/extern/igfd/dirent/LICENSE new file mode 100644 index 00000000..af043606 --- /dev/null +++ b/extern/igfd/dirent/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 1998-2019 Toni Ronkko + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/extern/igfd/dirent/README.md b/extern/igfd/dirent/README.md new file mode 100644 index 00000000..53cc9f72 --- /dev/null +++ b/extern/igfd/dirent/README.md @@ -0,0 +1,96 @@ +# Dirent +Dirent is a C/C++ programming interface that allows programmers to retrieve +information about files and directories under Linux/UNIX. This project +provides Linux compatible Dirent interface for Microsoft Windows. + + +# Installation + +Download the latest Dirent installation package from +[GitHub](https://github.com/tronkko/dirent/releases) and +unpack the installation file with 7-zip, for example. The installation +package contains dirent.h file as well as a few example programs and +tests. + + +## Install Dirent for All Programs + +To make dirent.h available for all C/C++ programs, simply copy the +``include/dirent.h`` file to the system include directory. System include +directory contains header files such as assert.h and windows.h. In Visual +Studio 2008, for example, the system include may be found at +``C:\Program Files\Microsoft Visual Studio 9.0\VC\include``. + +Everything you need is included in the single dirent.h file, and you can +start using Dirent immediately -- there is no need to add files to your +Visual Studio project. + + +## Embed Dirent into Your Own Project + +If you wish to distribute dirent.h alongside with your own source code, then +copy ``include/dirent.h`` file to a new sub-directory within your project and +add that directory to include path on Windows while omitting the directory +under Linux/UNIX. This allows your project to be compiled against native +dirent.h on Linux/UNIX while substituting the functionality on Microsoft +Windows. + + +## Examples + +The installation package contains four example programs: + +Program | Purpose +-------- | ----------------------------------------------------------------- +ls | List files in a directory, e.g. ls "c:\Program Files" +find | Find files in subdirectories, e.g. find "c:\Program Files\CMake" +updatedb | Build database of files in a drive, e.g. updatedb c:\ +locate | Locate a file from database, e.g. locate notepad.exe + +To build the example programs, first install [CMake](https://cmake.org/). +Then, with CMake installed, open command prompt and create a temporary +directory ``c:\temp\dirent`` for the build files as + +``` +c:\ +mkdir temp +mkdir temp\dirent +cd temp\dirent +``` + +Generate build files as + +``` +cmake d:\dirent +``` + +where ``d:\dirent`` is the root directory of the Dirent package (containing +this README.md and LICENSE file). + +Once CMake is finished, open Visual Studio, load the generated dirent.sln file +from the build directory and build the solution. Once the build completes, run +the example programs from the command prompt as + +``` +cd Debug +ls . +find . +updatedb c:\ +locate cmd.exe +``` + + +# Copying + +Dirent may be freely distributed under the MIT license. See the +[LICENSE](LICENSE) file for details. + + +# Alternatives to Dirent + +I ported Dirent to Microsoft Windows in 1998 when only a few alternatives +were available. However, the situation has changed since then and nowadays +both [Cygwin](http://www.cygwin.com) and [MingW](http://www.mingw.org) +allow you to compile a great number of UNIX programs in Microsoft Windows. +They both provide a full dirent API as well as many other UNIX APIs. MingW +can even be used for commercial applications! diff --git a/extern/igfd/dirent/dirent.h b/extern/igfd/dirent/dirent.h new file mode 100644 index 00000000..f7a46daf --- /dev/null +++ b/extern/igfd/dirent/dirent.h @@ -0,0 +1,1160 @@ +/* + * Dirent interface for Microsoft Visual Studio + * + * Copyright (C) 1998-2019 Toni Ronkko + * This file is part of dirent. Dirent may be freely distributed + * under the MIT license. For all details and documentation, see + * https://github.com/tronkko/dirent + */ +#ifndef DIRENT_H +#define DIRENT_H + +/* Hide warnings about unreferenced local functions */ +#if defined(__clang__) +# pragma clang diagnostic ignored "-Wunused-function" +#elif defined(_MSC_VER) +# pragma warning(disable:4505) +#elif defined(__GNUC__) +# pragma GCC diagnostic ignored "-Wunused-function" +#endif + +/* + * Include windows.h without Windows Sockets 1.1 to prevent conflicts with + * Windows Sockets 2.0. + */ +#ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +#endif +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Indicates that d_type field is available in dirent structure */ +#define _DIRENT_HAVE_D_TYPE + +/* Indicates that d_namlen field is available in dirent structure */ +#define _DIRENT_HAVE_D_NAMLEN + +/* Entries missing from MSVC 6.0 */ +#if !defined(FILE_ATTRIBUTE_DEVICE) +# define FILE_ATTRIBUTE_DEVICE 0x40 +#endif + +/* File type and permission flags for stat(), general mask */ +#if !defined(S_IFMT) +# define S_IFMT _S_IFMT +#endif + +/* Directory bit */ +#if !defined(S_IFDIR) +# define S_IFDIR _S_IFDIR +#endif + +/* Character device bit */ +#if !defined(S_IFCHR) +# define S_IFCHR _S_IFCHR +#endif + +/* Pipe bit */ +#if !defined(S_IFFIFO) +# define S_IFFIFO _S_IFFIFO +#endif + +/* Regular file bit */ +#if !defined(S_IFREG) +# define S_IFREG _S_IFREG +#endif + +/* Read permission */ +#if !defined(S_IREAD) +# define S_IREAD _S_IREAD +#endif + +/* Write permission */ +#if !defined(S_IWRITE) +# define S_IWRITE _S_IWRITE +#endif + +/* Execute permission */ +#if !defined(S_IEXEC) +# define S_IEXEC _S_IEXEC +#endif + +/* Pipe */ +#if !defined(S_IFIFO) +# define S_IFIFO _S_IFIFO +#endif + +/* Block device */ +#if !defined(S_IFBLK) +# define S_IFBLK 0 +#endif + +/* Link */ +#if !defined(S_IFLNK) +# define S_IFLNK 0 +#endif + +/* Socket */ +#if !defined(S_IFSOCK) +# define S_IFSOCK 0 +#endif + +/* Read user permission */ +#if !defined(S_IRUSR) +# define S_IRUSR S_IREAD +#endif + +/* Write user permission */ +#if !defined(S_IWUSR) +# define S_IWUSR S_IWRITE +#endif + +/* Execute user permission */ +#if !defined(S_IXUSR) +# define S_IXUSR 0 +#endif + +/* Read group permission */ +#if !defined(S_IRGRP) +# define S_IRGRP 0 +#endif + +/* Write group permission */ +#if !defined(S_IWGRP) +# define S_IWGRP 0 +#endif + +/* Execute group permission */ +#if !defined(S_IXGRP) +# define S_IXGRP 0 +#endif + +/* Read others permission */ +#if !defined(S_IROTH) +# define S_IROTH 0 +#endif + +/* Write others permission */ +#if !defined(S_IWOTH) +# define S_IWOTH 0 +#endif + +/* Execute others permission */ +#if !defined(S_IXOTH) +# define S_IXOTH 0 +#endif + +/* Maximum length of file name */ +#if !defined(PATH_MAX) +# define PATH_MAX MAX_PATH +#endif +#if !defined(FILENAME_MAX) +# define FILENAME_MAX MAX_PATH +#endif +#if !defined(NAME_MAX) +# define NAME_MAX FILENAME_MAX +#endif + +/* File type flags for d_type */ +#define DT_UNKNOWN 0 +#define DT_REG S_IFREG +#define DT_DIR S_IFDIR +#define DT_FIFO S_IFIFO +#define DT_SOCK S_IFSOCK +#define DT_CHR S_IFCHR +#define DT_BLK S_IFBLK +#define DT_LNK S_IFLNK + +/* Macros for converting between st_mode and d_type */ +#define IFTODT(mode) ((mode) & S_IFMT) +#define DTTOIF(type) (type) + +/* + * File type macros. Note that block devices, sockets and links cannot be + * distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are + * only defined for compatibility. These macros should always return false + * on Windows. + */ +#if !defined(S_ISFIFO) +# define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO) +#endif +#if !defined(S_ISDIR) +# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) +#endif +#if !defined(S_ISREG) +# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) +#endif +#if !defined(S_ISLNK) +# define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK) +#endif +#if !defined(S_ISSOCK) +# define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) +#endif +#if !defined(S_ISCHR) +# define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR) +#endif +#if !defined(S_ISBLK) +# define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK) +#endif + +/* Return the exact length of the file name without zero terminator */ +#define _D_EXACT_NAMLEN(p) ((p)->d_namlen) + +/* Return the maximum size of a file name */ +#define _D_ALLOC_NAMLEN(p) ((PATH_MAX)+1) + + +#ifdef __cplusplus +extern "C" { +#endif + + +/* Wide-character version */ +struct _wdirent { + /* Always zero */ + long d_ino; + + /* File position within stream */ + long d_off; + + /* Structure size */ + unsigned short d_reclen; + + /* Length of name without \0 */ + size_t d_namlen; + + /* File type */ + int d_type; + + /* File name */ + wchar_t d_name[PATH_MAX+1]; +}; +typedef struct _wdirent _wdirent; + +struct _WDIR { + /* Current directory entry */ + struct _wdirent ent; + + /* Private file data */ + WIN32_FIND_DATAW data; + + /* True if data is valid */ + int cached; + + /* Win32 search handle */ + HANDLE handle; + + /* Initial directory name */ + wchar_t *patt; +}; +typedef struct _WDIR _WDIR; + +/* Multi-byte character version */ +struct dirent { + /* Always zero */ + long d_ino; + + /* File position within stream */ + long d_off; + + /* Structure size */ + unsigned short d_reclen; + + /* Length of name without \0 */ + size_t d_namlen; + + /* File type */ + int d_type; + + /* File name */ + char d_name[PATH_MAX+1]; +}; +typedef struct dirent dirent; + +struct DIR { + struct dirent ent; + struct _WDIR *wdirp; +}; +typedef struct DIR DIR; + + +/* Dirent functions */ +static DIR *opendir (const char *dirname); +static _WDIR *_wopendir (const wchar_t *dirname); + +static struct dirent *readdir (DIR *dirp); +static struct _wdirent *_wreaddir (_WDIR *dirp); + +static int readdir_r( + DIR *dirp, struct dirent *entry, struct dirent **result); +static int _wreaddir_r( + _WDIR *dirp, struct _wdirent *entry, struct _wdirent **result); + +static int closedir (DIR *dirp); +static int _wclosedir (_WDIR *dirp); + +static void rewinddir (DIR* dirp); +static void _wrewinddir (_WDIR* dirp); + +static int scandir (const char *dirname, struct dirent ***namelist, + int (*filter)(const struct dirent*), + int (*compare)(const struct dirent**, const struct dirent**)); + +static int alphasort (const struct dirent **a, const struct dirent **b); + +static int versionsort (const struct dirent **a, const struct dirent **b); + + +/* For compatibility with Symbian */ +#define wdirent _wdirent +#define WDIR _WDIR +#define wopendir _wopendir +#define wreaddir _wreaddir +#define wclosedir _wclosedir +#define wrewinddir _wrewinddir + + +/* Internal utility functions */ +static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp); +static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp); + +static int dirent_mbstowcs_s( + size_t *pReturnValue, + wchar_t *wcstr, + size_t sizeInWords, + const char *mbstr, + size_t count); + +static int dirent_wcstombs_s( + size_t *pReturnValue, + char *mbstr, + size_t sizeInBytes, + const wchar_t *wcstr, + size_t count); + +static void dirent_set_errno (int error); + + +/* + * Open directory stream DIRNAME for read and return a pointer to the + * internal working area that is used to retrieve individual directory + * entries. + */ +static _WDIR* +_wopendir( + const wchar_t *dirname) +{ + _WDIR *dirp; + DWORD n; + wchar_t *p; + + /* Must have directory name */ + if (dirname == NULL || dirname[0] == '\0') { + dirent_set_errno (ENOENT); + return NULL; + } + + /* Allocate new _WDIR structure */ + dirp = (_WDIR*) malloc (sizeof (struct _WDIR)); + if (!dirp) { + return NULL; + } + + /* Reset _WDIR structure */ + dirp->handle = INVALID_HANDLE_VALUE; + dirp->patt = NULL; + dirp->cached = 0; + + /* + * Compute the length of full path plus zero terminator + * + * Note that on WinRT there's no way to convert relative paths + * into absolute paths, so just assume it is an absolute path. + */ +#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) + /* Desktop */ + n = GetFullPathNameW (dirname, 0, NULL, NULL); +#else + /* WinRT */ + n = wcslen (dirname); +#endif + + /* Allocate room for absolute directory name and search pattern */ + dirp->patt = (wchar_t*) malloc (sizeof (wchar_t) * n + 16); + if (dirp->patt == NULL) { + goto exit_closedir; + } + + /* + * Convert relative directory name to an absolute one. This + * allows rewinddir() to function correctly even when current + * working directory is changed between opendir() and rewinddir(). + * + * Note that on WinRT there's no way to convert relative paths + * into absolute paths, so just assume it is an absolute path. + */ +#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) + /* Desktop */ + n = GetFullPathNameW (dirname, n, dirp->patt, NULL); + if (n <= 0) { + goto exit_closedir; + } +#else + /* WinRT */ + wcsncpy_s (dirp->patt, n+1, dirname, n); +#endif + + /* Append search pattern \* to the directory name */ + p = dirp->patt + n; + switch (p[-1]) { + case '\\': + case '/': + case ':': + /* Directory ends in path separator, e.g. c:\temp\ */ + /*NOP*/; + break; + + default: + /* Directory name doesn't end in path separator */ + *p++ = '\\'; + } + *p++ = '*'; + *p = '\0'; + + /* Open directory stream and retrieve the first entry */ + if (!dirent_first (dirp)) { + goto exit_closedir; + } + + /* Success */ + return dirp; + + /* Failure */ +exit_closedir: + _wclosedir (dirp); + return NULL; +} + +/* + * Read next directory entry. + * + * Returns pointer to static directory entry which may be overwritten by + * subsequent calls to _wreaddir(). + */ +static struct _wdirent* +_wreaddir( + _WDIR *dirp) +{ + struct _wdirent *entry; + + /* + * Read directory entry to buffer. We can safely ignore the return value + * as entry will be set to NULL in case of error. + */ + (void) _wreaddir_r (dirp, &dirp->ent, &entry); + + /* Return pointer to statically allocated directory entry */ + return entry; +} + +/* + * Read next directory entry. + * + * Returns zero on success. If end of directory stream is reached, then sets + * result to NULL and returns zero. + */ +static int +_wreaddir_r( + _WDIR *dirp, + struct _wdirent *entry, + struct _wdirent **result) +{ + WIN32_FIND_DATAW *datap; + + /* Read next directory entry */ + datap = dirent_next (dirp); + if (datap) { + size_t n; + DWORD attr; + + /* + * Copy file name as wide-character string. If the file name is too + * long to fit in to the destination buffer, then truncate file name + * to PATH_MAX characters and zero-terminate the buffer. + */ + n = 0; + while (n < PATH_MAX && datap->cFileName[n] != 0) { + entry->d_name[n] = datap->cFileName[n]; + n++; + } + entry->d_name[n] = 0; + + /* Length of file name excluding zero terminator */ + entry->d_namlen = n; + + /* File type */ + attr = datap->dwFileAttributes; + if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) { + entry->d_type = DT_CHR; + } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) { + entry->d_type = DT_DIR; + } else { + entry->d_type = DT_REG; + } + + /* Reset dummy fields */ + entry->d_ino = 0; + entry->d_off = 0; + entry->d_reclen = sizeof (struct _wdirent); + + /* Set result address */ + *result = entry; + + } else { + + /* Return NULL to indicate end of directory */ + *result = NULL; + + } + + return /*OK*/0; +} + +/* + * Close directory stream opened by opendir() function. This invalidates the + * DIR structure as well as any directory entry read previously by + * _wreaddir(). + */ +static int +_wclosedir( + _WDIR *dirp) +{ + int ok; + if (dirp) { + + /* Release search handle */ + if (dirp->handle != INVALID_HANDLE_VALUE) { + FindClose (dirp->handle); + } + + /* Release search pattern */ + free (dirp->patt); + + /* Release directory structure */ + free (dirp); + ok = /*success*/0; + + } else { + + /* Invalid directory stream */ + dirent_set_errno (EBADF); + ok = /*failure*/-1; + + } + return ok; +} + +/* + * Rewind directory stream such that _wreaddir() returns the very first + * file name again. + */ +static void +_wrewinddir( + _WDIR* dirp) +{ + if (dirp) { + /* Release existing search handle */ + if (dirp->handle != INVALID_HANDLE_VALUE) { + FindClose (dirp->handle); + } + + /* Open new search handle */ + dirent_first (dirp); + } +} + +/* Get first directory entry (internal) */ +static WIN32_FIND_DATAW* +dirent_first( + _WDIR *dirp) +{ + WIN32_FIND_DATAW *datap; + DWORD error; + + /* Open directory and retrieve the first entry */ + dirp->handle = FindFirstFileExW( + dirp->patt, FindExInfoStandard, &dirp->data, + FindExSearchNameMatch, NULL, 0); + if (dirp->handle != INVALID_HANDLE_VALUE) { + + /* a directory entry is now waiting in memory */ + datap = &dirp->data; + dirp->cached = 1; + + } else { + + /* Failed to open directory: no directory entry in memory */ + dirp->cached = 0; + datap = NULL; + + /* Set error code */ + error = GetLastError (); + switch (error) { + case ERROR_ACCESS_DENIED: + /* No read access to directory */ + dirent_set_errno (EACCES); + break; + + case ERROR_DIRECTORY: + /* Directory name is invalid */ + dirent_set_errno (ENOTDIR); + break; + + case ERROR_PATH_NOT_FOUND: + default: + /* Cannot find the file */ + dirent_set_errno (ENOENT); + } + + } + return datap; +} + +/* + * Get next directory entry (internal). + * + * Returns + */ +static WIN32_FIND_DATAW* +dirent_next( + _WDIR *dirp) +{ + WIN32_FIND_DATAW *p; + + /* Get next directory entry */ + if (dirp->cached != 0) { + + /* A valid directory entry already in memory */ + p = &dirp->data; + dirp->cached = 0; + + } else if (dirp->handle != INVALID_HANDLE_VALUE) { + + /* Get the next directory entry from stream */ + if (FindNextFileW (dirp->handle, &dirp->data) != FALSE) { + /* Got a file */ + p = &dirp->data; + } else { + /* The very last entry has been processed or an error occurred */ + FindClose (dirp->handle); + dirp->handle = INVALID_HANDLE_VALUE; + p = NULL; + } + + } else { + + /* End of directory stream reached */ + p = NULL; + + } + + return p; +} + +/* + * Open directory stream using plain old C-string. + */ +static DIR* +opendir( + const char *dirname) +{ + struct DIR *dirp; + + /* Must have directory name */ + if (dirname == NULL || dirname[0] == '\0') { + dirent_set_errno (ENOENT); + return NULL; + } + + /* Allocate memory for DIR structure */ + dirp = (DIR*) malloc (sizeof (struct DIR)); + if (!dirp) { + return NULL; + } + { + int error; + wchar_t wname[PATH_MAX + 1]; + size_t n; + + /* Convert directory name to wide-character string */ + error = dirent_mbstowcs_s( + &n, wname, PATH_MAX + 1, dirname, PATH_MAX + 1); + if (error) { + /* + * Cannot convert file name to wide-character string. This + * occurs if the string contains invalid multi-byte sequences or + * the output buffer is too small to contain the resulting + * string. + */ + goto exit_free; + } + + + /* Open directory stream using wide-character name */ + dirp->wdirp = _wopendir (wname); + if (!dirp->wdirp) { + goto exit_free; + } + + } + + /* Success */ + return dirp; + + /* Failure */ +exit_free: + free (dirp); + return NULL; +} + +/* + * Read next directory entry. + */ +static struct dirent* +readdir( + DIR *dirp) +{ + struct dirent *entry; + + /* + * Read directory entry to buffer. We can safely ignore the return value + * as entry will be set to NULL in case of error. + */ + (void) readdir_r (dirp, &dirp->ent, &entry); + + /* Return pointer to statically allocated directory entry */ + return entry; +} + +/* + * Read next directory entry into called-allocated buffer. + * + * Returns zero on success. If the end of directory stream is reached, then + * sets result to NULL and returns zero. + */ +static int +readdir_r( + DIR *dirp, + struct dirent *entry, + struct dirent **result) +{ + WIN32_FIND_DATAW *datap; + + /* Read next directory entry */ + datap = dirent_next (dirp->wdirp); + if (datap) { + size_t n; + int error; + + /* Attempt to convert file name to multi-byte string */ + error = dirent_wcstombs_s( + &n, entry->d_name, PATH_MAX + 1, datap->cFileName, PATH_MAX + 1); + + /* + * If the file name cannot be represented by a multi-byte string, + * then attempt to use old 8+3 file name. This allows traditional + * Unix-code to access some file names despite of unicode + * characters, although file names may seem unfamiliar to the user. + * + * Be ware that the code below cannot come up with a short file + * name unless the file system provides one. At least + * VirtualBox shared folders fail to do this. + */ + if (error && datap->cAlternateFileName[0] != '\0') { + error = dirent_wcstombs_s( + &n, entry->d_name, PATH_MAX + 1, + datap->cAlternateFileName, PATH_MAX + 1); + } + + if (!error) { + DWORD attr; + + /* Length of file name excluding zero terminator */ + entry->d_namlen = n - 1; + + /* File attributes */ + attr = datap->dwFileAttributes; + if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) { + entry->d_type = DT_CHR; + } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) { + entry->d_type = DT_DIR; + } else { + entry->d_type = DT_REG; + } + + /* Reset dummy fields */ + entry->d_ino = 0; + entry->d_off = 0; + entry->d_reclen = sizeof (struct dirent); + + } else { + + /* + * Cannot convert file name to multi-byte string so construct + * an erroneous directory entry and return that. Note that + * we cannot return NULL as that would stop the processing + * of directory entries completely. + */ + entry->d_name[0] = '?'; + entry->d_name[1] = '\0'; + entry->d_namlen = 1; + entry->d_type = DT_UNKNOWN; + entry->d_ino = 0; + entry->d_off = -1; + entry->d_reclen = 0; + + } + + /* Return pointer to directory entry */ + *result = entry; + + } else { + + /* No more directory entries */ + *result = NULL; + + } + + return /*OK*/0; +} + +/* + * Close directory stream. + */ +static int +closedir( + DIR *dirp) +{ + int ok; + if (dirp) { + + /* Close wide-character directory stream */ + ok = _wclosedir (dirp->wdirp); + dirp->wdirp = NULL; + + /* Release multi-byte character version */ + free (dirp); + + } else { + + /* Invalid directory stream */ + dirent_set_errno (EBADF); + ok = /*failure*/-1; + + } + return ok; +} + +/* + * Rewind directory stream to beginning. + */ +static void +rewinddir( + DIR* dirp) +{ + /* Rewind wide-character string directory stream */ + _wrewinddir (dirp->wdirp); +} + +/* + * Scan directory for entries. + */ +static int +scandir( + const char *dirname, + struct dirent ***namelist, + int (*filter)(const struct dirent*), + int (*compare)(const struct dirent**, const struct dirent**)) +{ + struct dirent **files = NULL; + size_t size = 0; + size_t allocated = 0; + const size_t init_size = 1; + DIR *dir = NULL; + struct dirent *entry; + struct dirent *tmp = NULL; + size_t i; + int result = 0; + + /* Open directory stream */ + dir = opendir (dirname); + if (dir) { + + /* Read directory entries to memory */ + while (1) { + + /* Enlarge pointer table to make room for another pointer */ + if (size >= allocated) { + void *p; + size_t num_entries; + + /* Compute number of entries in the enlarged pointer table */ + if (size < init_size) { + /* Allocate initial pointer table */ + num_entries = init_size; + } else { + /* Double the size */ + num_entries = size * 2; + } + + /* Allocate first pointer table or enlarge existing table */ + p = realloc (files, sizeof (void*) * num_entries); + if (p != NULL) { + /* Got the memory */ + files = (dirent**) p; + allocated = num_entries; + } else { + /* Out of memory */ + result = -1; + break; + } + + } + + /* Allocate room for temporary directory entry */ + if (tmp == NULL) { + tmp = (struct dirent*) malloc (sizeof (struct dirent)); + if (tmp == NULL) { + /* Cannot allocate temporary directory entry */ + result = -1; + break; + } + } + + /* Read directory entry to temporary area */ + if (readdir_r (dir, tmp, &entry) == /*OK*/0) { + + /* Did we get an entry? */ + if (entry != NULL) { + int pass; + + /* Determine whether to include the entry in result */ + if (filter) { + /* Let the filter function decide */ + pass = filter (tmp); + } else { + /* No filter function, include everything */ + pass = 1; + } + + if (pass) { + /* Store the temporary entry to pointer table */ + files[size++] = tmp; + tmp = NULL; + + /* Keep up with the number of files */ + result++; + } + + } else { + + /* + * End of directory stream reached => sort entries and + * exit. + */ + qsort (files, size, sizeof (void*), + (int (*) (const void*, const void*)) compare); + break; + + } + + } else { + /* Error reading directory entry */ + result = /*Error*/ -1; + break; + } + + } + + } else { + /* Cannot open directory */ + result = /*Error*/ -1; + } + + /* Release temporary directory entry */ + free (tmp); + + /* Release allocated memory on error */ + if (result < 0) { + for (i = 0; i < size; i++) { + free (files[i]); + } + free (files); + files = NULL; + } + + /* Close directory stream */ + if (dir) { + closedir (dir); + } + + /* Pass pointer table to caller */ + if (namelist) { + *namelist = files; + } + return result; +} + +/* Alphabetical sorting */ +static int +alphasort( + const struct dirent **a, const struct dirent **b) +{ + return strcoll ((*a)->d_name, (*b)->d_name); +} + +/* Sort versions */ +static int +versionsort( + const struct dirent **a, const struct dirent **b) +{ + /* FIXME: implement strverscmp and use that */ + return alphasort (a, b); +} + +/* Convert multi-byte string to wide character string */ +static int +dirent_mbstowcs_s( + size_t *pReturnValue, + wchar_t *wcstr, + size_t sizeInWords, + const char *mbstr, + size_t count) +{ + int error; + +#if defined(_MSC_VER) && _MSC_VER >= 1400 + + /* Microsoft Visual Studio 2005 or later */ + error = mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count); + +#else + + /* Older Visual Studio or non-Microsoft compiler */ + size_t n; + + /* Convert to wide-character string (or count characters) */ + n = mbstowcs (wcstr, mbstr, sizeInWords); + if (!wcstr || n < count) { + + /* Zero-terminate output buffer */ + if (wcstr && sizeInWords) { + if (n >= sizeInWords) { + n = sizeInWords - 1; + } + wcstr[n] = 0; + } + + /* Length of resulting multi-byte string WITH zero terminator */ + if (pReturnValue) { + *pReturnValue = n + 1; + } + + /* Success */ + error = 0; + + } else { + + /* Could not convert string */ + error = 1; + + } + +#endif + return error; +} + +/* Convert wide-character string to multi-byte string */ +static int +dirent_wcstombs_s( + size_t *pReturnValue, + char *mbstr, + size_t sizeInBytes, /* max size of mbstr */ + const wchar_t *wcstr, + size_t count) +{ + int error; + +#if defined(_MSC_VER) && _MSC_VER >= 1400 + + /* Microsoft Visual Studio 2005 or later */ + error = wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count); + +#else + + /* Older Visual Studio or non-Microsoft compiler */ + size_t n; + + /* Convert to multi-byte string (or count the number of bytes needed) */ + n = wcstombs (mbstr, wcstr, sizeInBytes); + if (!mbstr || n < count) { + + /* Zero-terminate output buffer */ + if (mbstr && sizeInBytes) { + if (n >= sizeInBytes) { + n = sizeInBytes - 1; + } + mbstr[n] = '\0'; + } + + /* Length of resulting multi-bytes string WITH zero-terminator */ + if (pReturnValue) { + *pReturnValue = n + 1; + } + + /* Success */ + error = 0; + + } else { + + /* Cannot convert string */ + error = 1; + + } + +#endif + return error; +} + +/* Set errno variable */ +static void +dirent_set_errno( + int error) +{ +#if defined(_MSC_VER) && _MSC_VER >= 1400 + + /* Microsoft Visual Studio 2005 and later */ + _set_errno (error); + +#else + + /* Non-Microsoft compiler or older Microsoft compiler */ + errno = error; + +#endif +} + + +#ifdef __cplusplus +} +#endif +#endif /*DIRENT_H*/ diff --git a/extern/igfd/stb/LICENSE b/extern/igfd/stb/LICENSE new file mode 100644 index 00000000..a77ae91f --- /dev/null +++ b/extern/igfd/stb/LICENSE @@ -0,0 +1,37 @@ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/extern/igfd/stb/README.md b/extern/igfd/stb/README.md new file mode 100644 index 00000000..61bbd30d --- /dev/null +++ b/extern/igfd/stb/README.md @@ -0,0 +1,165 @@ + + +stb +=== + +single-file public domain (or MIT licensed) libraries for C/C++ + +Noteworthy: + +* image loader: [stb_image.h](stb_image.h) +* image writer: [stb_image_write.h](stb_image_write.h) +* image resizer: [stb_image_resize.h](stb_image_resize.h) +* font text rasterizer: [stb_truetype.h](stb_truetype.h) +* typesafe containers: [stb_ds.h](stb_ds.h) + +Most libraries by stb, except: stb_dxt by Fabian "ryg" Giesen, stb_image_resize +by Jorge L. "VinoBS" Rodriguez, and stb_sprintf by Jeff Roberts. + + + +library | lastest version | category | LoC | description +--------------------- | ---- | -------- | --- | -------------------------------- +**[stb_vorbis.c](stb_vorbis.c)** | 1.20 | audio | 5563 | decode ogg vorbis files from file/memory to float/16-bit signed output +**[stb_image.h](stb_image.h)** | 2.26 | graphics | 7762 | image loading/decoding from file/memory: JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC +**[stb_truetype.h](stb_truetype.h)** | 1.24 | graphics | 5011 | parse, decode, and rasterize characters from truetype fonts +**[stb_image_write.h](stb_image_write.h)** | 1.15 | graphics | 1690 | image writing to disk: PNG, TGA, BMP +**[stb_image_resize.h](stb_image_resize.h)** | 0.96 | graphics | 2631 | resize images larger/smaller with good quality +**[stb_rect_pack.h](stb_rect_pack.h)** | 1.00 | graphics | 628 | simple 2D rectangle packer with decent quality +**[stb_ds.h](stb_ds.h)** | 0.65 | utility | 1880 | typesafe dynamic array and hash tables for C, will compile in C++ +**[stb_sprintf.h](stb_sprintf.h)** | 1.09 | utility | 1879 | fast sprintf, snprintf for C/C++ +**[stretchy_buffer.h](stretchy_buffer.h)** | 1.04 | utility | 263 | typesafe dynamic array for C (i.e. approximation to vector<>), doesn't compile as C++ +**[stb_textedit.h](stb_textedit.h)** | 1.13 | user interface | 1404 | guts of a text editor for games etc implementing them from scratch +**[stb_voxel_render.h](stb_voxel_render.h)** | 0.89 | 3D graphics | 3807 | Minecraft-esque voxel rendering "engine" with many more features +**[stb_dxt.h](stb_dxt.h)** | 1.10 | 3D graphics | 753 | Fabian "ryg" Giesen's real-time DXT compressor +**[stb_perlin.h](stb_perlin.h)** | 0.5 | 3D graphics | 428 | revised Perlin noise (3D input, 1D output) +**[stb_easy_font.h](stb_easy_font.h)** | 1.1 | 3D graphics | 305 | quick-and-dirty easy-to-deploy bitmap font for printing frame rate, etc +**[stb_tilemap_editor.h](stb_tilemap_editor.h)** | 0.41 | game dev | 4161 | embeddable tilemap editor +**[stb_herringbone_wa...](stb_herringbone_wang_tile.h)** | 0.7 | game dev | 1221 | herringbone Wang tile map generator +**[stb_c_lexer.h](stb_c_lexer.h)** | 0.11 | parsing | 966 | simplify writing parsers for C-like languages +**[stb_divide.h](stb_divide.h)** | 0.93 | math | 430 | more useful 32-bit modulus e.g. "euclidean divide" +**[stb_connected_comp...](stb_connected_components.h)** | 0.96 | misc | 1049 | incrementally compute reachability on grids +**[stb.h](stb.h)** | 2.37 | misc | 14454 | helper functions for C, mostly redundant in C++; basically author's personal stuff +**[stb_leakcheck.h](stb_leakcheck.h)** | 0.6 | misc | 194 | quick-and-dirty malloc/free leak-checking +**[stb_include.h](stb_include.h)** | 0.02 | misc | 295 | implement recursive #include support, particularly for GLSL + +Total libraries: 22 +Total lines of C code: 56774 + + +FAQ +--- + +#### What's the license? + +These libraries are in the public domain. You can do anything you +want with them. You have no legal obligation +to do anything else, although I appreciate attribution. + +They are also licensed under the MIT open source license, if you have lawyers +who are unhappy with public domain. Every source file includes an explicit +dual-license for you to choose from. + +#### Are there other single-file public-domain/open source libraries with minimal dependencies out there? + +[Yes.](https://github.com/nothings/single_file_libs) + +#### If I wrap an stb library in a new library, does the new library have to be public domain/MIT? + +No, because it's public domain you can freely relicense it to whatever license your new +library wants to be. + +#### What's the deal with SSE support in GCC-based compilers? + +stb_image will either use SSE2 (if you compile with -msse2) or +will not use any SIMD at all, rather than trying to detect the +processor at runtime and handle it correctly. As I understand it, +the approved path in GCC for runtime-detection require +you to use multiple source files, one for each CPU configuration. +Because stb_image is a header-file library that compiles in only +one source file, there's no approved way to build both an +SSE-enabled and a non-SSE-enabled variation. + +While we've tried to work around it, we've had multiple issues over +the years due to specific versions of gcc breaking what we're doing, +so we've given up on it. See https://github.com/nothings/stb/issues/280 +and https://github.com/nothings/stb/issues/410 for examples. + +#### Some of these libraries seem redundant to existing open source libraries. Are they better somehow? + +Generally they're only better in that they're easier to integrate, +easier to use, and easier to release (single file; good API; no +attribution requirement). They may be less featureful, slower, +and/or use more memory. If you're already using an equivalent +library, there's probably no good reason to switch. + +#### Can I link directly to the table of stb libraries? + +You can use [this URL](https://github.com/nothings/stb#stb_libs) to link directly to that list. + +#### Why do you list "lines of code"? It's a terrible metric. + +Just to give you some idea of the internal complexity of the library, +to help you manage your expectations, or to let you know what you're +getting into. While not all the libraries are written in the same +style, they're certainly similar styles, and so comparisons between +the libraries are probably still meaningful. + +Note though that the lines do include both the implementation, the +part that corresponds to a header file, and the documentation. + +#### Why single-file headers? + +Windows doesn't have standard directories where libraries +live. That makes deploying libraries in Windows a lot more +painful than open source developers on Unix-derivates generally +realize. (It also makes library dependencies a lot worse in Windows.) + +There's also a common problem in Windows where a library was built +against a different version of the runtime library, which causes +link conflicts and confusion. Shipping the libs as headers means +you normally just compile them straight into your project without +making libraries, thus sidestepping that problem. + +Making them a single file makes it very easy to just +drop them into a project that needs them. (Of course you can +still put them in a proper shared library tree if you want.) + +Why not two files, one a header and one an implementation? +The difference between 10 files and 9 files is not a big deal, +but the difference between 2 files and 1 file is a big deal. +You don't need to zip or tar the files up, you don't have to +remember to attach *two* files, etc. + +#### Why "stb"? Is this something to do with Set-Top Boxes? + +No, they are just the initials for my name, Sean T. Barrett. +This was not chosen out of egomania, but as a moderately sane +way of namespacing the filenames and source function names. + +#### Will you add more image types to stb_image.h? + +No. As stb_image use has grown, it has become more important +for us to focus on security of the codebase. Adding new image +formats increases the amount of code we need to secure, so it +is no longer worth adding new formats. + +#### Do you have any advice on how to create my own single-file library? + +Yes. https://github.com/nothings/stb/blob/master/docs/stb_howto.txt + +#### Why public domain? + +I prefer it over GPL, LGPL, BSD, zlib, etc. for many reasons. +Some of them are listed here: +https://github.com/nothings/stb/blob/master/docs/why_public_domain.md + +#### Why C? + +Primarily, because I use C, not C++. But it does also make it easier +for other people to use them from other languages. + +#### Why not C99? stdint.h, declare-anywhere, etc. + +I still use MSVC 6 (1998) as my IDE because it has better human factors +for me than later versions of MSVC. diff --git a/extern/igfd/stb/stb_image.h b/extern/igfd/stb/stb_image.h new file mode 100644 index 00000000..accef483 --- /dev/null +++ b/extern/igfd/stb/stb_image.h @@ -0,0 +1,7762 @@ +/* stb_image - v2.26 - public domain image loader - http://nothings.org/stb + no warranty implied; use at your own risk + + Do this: + #define STB_IMAGE_IMPLEMENTATION + before you include this file in *one* C or C++ file to create the implementation. + + // i.e. it should look like this: + #include ... + #include ... + #include ... + #define STB_IMAGE_IMPLEMENTATION + #include "stb_image.h" + + You can #define STBI_ASSERT(x) before the #include to avoid using assert.h. + And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free + + + QUICK NOTES: + Primarily of interest to game developers and other people who can + avoid problematic images and only need the trivial interface + + JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib) + PNG 1/2/4/8/16-bit-per-channel + + TGA (not sure what subset, if a subset) + BMP non-1bpp, non-RLE + PSD (composited view only, no extra channels, 8/16 bit-per-channel) + + GIF (*comp always reports as 4-channel) + HDR (radiance rgbE format) + PIC (Softimage PIC) + PNM (PPM and PGM binary only) + + Animated GIF still needs a proper API, but here's one way to do it: + http://gist.github.com/urraka/685d9a6340b26b830d49 + + - decode from memory or through FILE (define STBI_NO_STDIO to remove code) + - decode from arbitrary I/O callbacks + - SIMD acceleration on x86/x64 (SSE2) and ARM (NEON) + + Full documentation under "DOCUMENTATION" below. + + +LICENSE + + See end of file for license information. + +RECENT REVISION HISTORY: + + 2.26 (2020-07-13) many minor fixes + 2.25 (2020-02-02) fix warnings + 2.24 (2020-02-02) fix warnings; thread-local failure_reason and flip_vertically + 2.23 (2019-08-11) fix clang static analysis warning + 2.22 (2019-03-04) gif fixes, fix warnings + 2.21 (2019-02-25) fix typo in comment + 2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) bugfix, 1-bit BMP, 16-bitness query, fix warnings + 2.16 (2017-07-23) all functions have 16-bit variants; optimizations; bugfixes + 2.15 (2017-03-18) fix png-1,2,4; all Imagenet JPGs; no runtime SSE detection on GCC + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-12-04) experimental 16-bit API, only for PNG so far; fixes + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) 16-bit PNGS; enable SSE2 in non-gcc x64 + RGB-format JPEG; remove white matting in PSD; + allocate large structures on the stack; + correct channel count for PNG & BMP + 2.10 (2016-01-22) avoid warning introduced in 2.09 + 2.09 (2016-01-16) 16-bit TGA; comments in PNM files; STBI_REALLOC_SIZED + + See end of file for full revision history. + + + ============================ Contributors ========================= + + Image formats Extensions, features + Sean Barrett (jpeg, png, bmp) Jetro Lauha (stbi_info) + Nicolas Schulz (hdr, psd) Martin "SpartanJ" Golini (stbi_info) + Jonathan Dummer (tga) James "moose2000" Brown (iPhone PNG) + Jean-Marc Lienher (gif) Ben "Disch" Wenger (io callbacks) + Tom Seddon (pic) Omar Cornut (1/2/4-bit PNG) + Thatcher Ulrich (psd) Nicolas Guillemot (vertical flip) + Ken Miller (pgm, ppm) Richard Mitton (16-bit PSD) + github:urraka (animated gif) Junggon Kim (PNM comments) + Christopher Forseth (animated gif) Daniel Gibson (16-bit TGA) + socks-the-fox (16-bit PNG) + Jeremy Sawicki (handle all ImageNet JPGs) + Optimizations & bugfixes Mikhail Morozov (1-bit BMP) + Fabian "ryg" Giesen Anael Seghezzi (is-16-bit query) + Arseny Kapoulkine + John-Mark Allen + Carmelo J Fdez-Aguera + + Bug & warning fixes + Marc LeBlanc David Woo Guillaume George Martins Mozeiko + Christpher Lloyd Jerry Jansson Joseph Thomson Blazej Dariusz Roszkowski + Phil Jordan Dave Moore Roy Eltham + Hayaki Saito Nathan Reed Won Chun + Luke Graham Johan Duparc Nick Verigakis the Horde3D community + Thomas Ruf Ronny Chevalier github:rlyeh + Janez Zemva John Bartholomew Michal Cichon github:romigrou + Jonathan Blow Ken Hamada Tero Hanninen github:svdijk + Laurent Gomila Cort Stratton github:snagar + Aruelien Pocheville Sergio Gonzalez Thibault Reuille github:Zelex + Cass Everitt Ryamond Barbiero github:grim210 + Paul Du Bois Engin Manap Aldo Culquicondor github:sammyhw + Philipp Wiesemann Dale Weiler Oriol Ferrer Mesia github:phprus + Josh Tobin Matthew Gregan github:poppolopoppo + Julian Raschke Gregory Mullen Christian Floisand github:darealshinji + Baldur Karlsson Kevin Schmidt JR Smith github:Michaelangel007 + Brad Weinberger Matvey Cherevko [reserved] + Luca Sas Alexander Veselov Zack Middleton [reserved] + Ryan C. Gordon [reserved] [reserved] + DO NOT ADD YOUR NAME HERE + + To add your name to the credits, pick a random blank space in the middle and fill it. + 80% of merge conflicts on stb PRs are due to people adding their name at the end + of the credits. +*/ + +#ifndef STBI_INCLUDE_STB_IMAGE_H +#define STBI_INCLUDE_STB_IMAGE_H + +// DOCUMENTATION +// +// Limitations: +// - no 12-bit-per-channel JPEG +// - no JPEGs with arithmetic coding +// - GIF always returns *comp=4 +// +// Basic usage (see HDR discussion below for HDR usage): +// int x,y,n; +// unsigned char *data = stbi_load(filename, &x, &y, &n, 0); +// // ... process data if not NULL ... +// // ... x = width, y = height, n = # 8-bit components per pixel ... +// // ... replace '0' with '1'..'4' to force that many components per pixel +// // ... but 'n' will always be the number that it would have been if you said 0 +// stbi_image_free(data) +// +// Standard parameters: +// int *x -- outputs image width in pixels +// int *y -- outputs image height in pixels +// int *channels_in_file -- outputs # of image components in image file +// int desired_channels -- if non-zero, # of image components requested in result +// +// The return value from an image loader is an 'unsigned char *' which points +// to the pixel data, or NULL on an allocation failure or if the image is +// corrupt or invalid. The pixel data consists of *y scanlines of *x pixels, +// with each pixel consisting of N interleaved 8-bit components; the first +// pixel pointed to is top-left-most in the image. There is no padding between +// image scanlines or between pixels, regardless of format. The number of +// components N is 'desired_channels' if desired_channels is non-zero, or +// *channels_in_file otherwise. If desired_channels is non-zero, +// *channels_in_file has the number of components that _would_ have been +// output otherwise. E.g. if you set desired_channels to 4, you will always +// get RGBA output, but you can check *channels_in_file to see if it's trivially +// opaque because e.g. there were only 3 channels in the source image. +// +// An output image with N components has the following components interleaved +// in this order in each pixel: +// +// N=#comp components +// 1 grey +// 2 grey, alpha +// 3 red, green, blue +// 4 red, green, blue, alpha +// +// If image loading fails for any reason, the return value will be NULL, +// and *x, *y, *channels_in_file will be unchanged. The function +// stbi_failure_reason() can be queried for an extremely brief, end-user +// unfriendly explanation of why the load failed. Define STBI_NO_FAILURE_STRINGS +// to avoid compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly +// more user-friendly ones. +// +// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. +// +// =========================================================================== +// +// UNICODE: +// +// If compiling for Windows and you wish to use Unicode filenames, compile +// with +// #define STBI_WINDOWS_UTF8 +// and pass utf8-encoded filenames. Call stbi_convert_wchar_to_utf8 to convert +// Windows wchar_t filenames to utf8. +// +// =========================================================================== +// +// Philosophy +// +// stb libraries are designed with the following priorities: +// +// 1. easy to use +// 2. easy to maintain +// 3. good performance +// +// Sometimes I let "good performance" creep up in priority over "easy to maintain", +// and for best performance I may provide less-easy-to-use APIs that give higher +// performance, in addition to the easy-to-use ones. Nevertheless, it's important +// to keep in mind that from the standpoint of you, a client of this library, +// all you care about is #1 and #3, and stb libraries DO NOT emphasize #3 above all. +// +// Some secondary priorities arise directly from the first two, some of which +// provide more explicit reasons why performance can't be emphasized. +// +// - Portable ("ease of use") +// - Small source code footprint ("easy to maintain") +// - No dependencies ("ease of use") +// +// =========================================================================== +// +// I/O callbacks +// +// I/O callbacks allow you to read from arbitrary sources, like packaged +// files or some other source. Data read from callbacks are processed +// through a small internal buffer (currently 128 bytes) to try to reduce +// overhead. +// +// The three functions you must define are "read" (reads some bytes of data), +// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). +// +// =========================================================================== +// +// SIMD support +// +// The JPEG decoder will try to automatically use SIMD kernels on x86 when +// supported by the compiler. For ARM Neon support, you must explicitly +// request it. +// +// (The old do-it-yourself SIMD API is no longer supported in the current +// code.) +// +// On x86, SSE2 will automatically be used when available based on a run-time +// test; if not, the generic C versions are used as a fall-back. On ARM targets, +// the typical path is to have separate builds for NEON and non-NEON devices +// (at least this is true for iOS and Android). Therefore, the NEON support is +// toggled by a build flag: define STBI_NEON to get NEON loops. +// +// If for some reason you do not want to use any of SIMD code, or if +// you have issues compiling it, you can disable it entirely by +// defining STBI_NO_SIMD. +// +// =========================================================================== +// +// HDR image support (disable by defining STBI_NO_HDR) +// +// stb_image supports loading HDR images in general, and currently the Radiance +// .HDR file format specifically. You can still load any file through the existing +// interface; if you attempt to load an HDR file, it will be automatically remapped +// to LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; +// both of these constants can be reconfigured through this interface: +// +// stbi_hdr_to_ldr_gamma(2.2f); +// stbi_hdr_to_ldr_scale(1.0f); +// +// (note, do not use _inverse_ constants; stbi_image will invert them +// appropriately). +// +// Additionally, there is a new, parallel interface for loading files as +// (linear) floats to preserve the full dynamic range: +// +// float *data = stbi_loadf(filename, &x, &y, &n, 0); +// +// If you load LDR images through this interface, those images will +// be promoted to floating point values, run through the inverse of +// constants corresponding to the above: +// +// stbi_ldr_to_hdr_scale(1.0f); +// stbi_ldr_to_hdr_gamma(2.2f); +// +// Finally, given a filename (or an open file or memory block--see header +// file for details) containing image data, you can query for the "most +// appropriate" interface to use (that is, whether the image is HDR or +// not), using: +// +// stbi_is_hdr(char *filename); +// +// =========================================================================== +// +// iPhone PNG support: +// +// By default we convert iphone-formatted PNGs back to RGB, even though +// they are internally encoded differently. You can disable this conversion +// by calling stbi_convert_iphone_png_to_rgb(0), in which case +// you will always just get the native iphone "format" through (which +// is BGR stored in RGB). +// +// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per +// pixel to remove any premultiplied alpha *only* if the image file explicitly +// says there's premultiplied data (currently only happens in iPhone images, +// and only if iPhone convert-to-rgb processing is on). +// +// =========================================================================== +// +// ADDITIONAL CONFIGURATION +// +// - You can suppress implementation of any of the decoders to reduce +// your code footprint by #defining one or more of the following +// symbols before creating the implementation. +// +// STBI_NO_JPEG +// STBI_NO_PNG +// STBI_NO_BMP +// STBI_NO_PSD +// STBI_NO_TGA +// STBI_NO_GIF +// STBI_NO_HDR +// STBI_NO_PIC +// STBI_NO_PNM (.ppm and .pgm) +// +// - You can request *only* certain decoders and suppress all other ones +// (this will be more forward-compatible, as addition of new decoders +// doesn't require you to disable them explicitly): +// +// STBI_ONLY_JPEG +// STBI_ONLY_PNG +// STBI_ONLY_BMP +// STBI_ONLY_PSD +// STBI_ONLY_TGA +// STBI_ONLY_GIF +// STBI_ONLY_HDR +// STBI_ONLY_PIC +// STBI_ONLY_PNM (.ppm and .pgm) +// +// - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still +// want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB +// +// - If you define STBI_MAX_DIMENSIONS, stb_image will reject images greater +// than that size (in either width or height) without further processing. +// This is to let programs in the wild set an upper bound to prevent +// denial-of-service attacks on untrusted data, as one could generate a +// valid image of gigantic dimensions and force stb_image to allocate a +// huge block of memory and spend disproportionate time decoding it. By +// default this is set to (1 << 24), which is 16777216, but that's still +// very big. + +#ifndef STBI_NO_STDIO +#include +#endif // STBI_NO_STDIO + +#define STBI_VERSION 1 + +enum +{ + STBI_default = 0, // only used for desired_channels + + STBI_grey = 1, + STBI_grey_alpha = 2, + STBI_rgb = 3, + STBI_rgb_alpha = 4 +}; + +#include +typedef unsigned char stbi_uc; +typedef unsigned short stbi_us; + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef STBIDEF +#ifdef STB_IMAGE_STATIC +#define STBIDEF static +#else +#define STBIDEF extern +#endif +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// PRIMARY API - works on images of any type +// + +// +// load image by filename, open file, or memory buffer +// + +typedef struct +{ + int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read + void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative + int (*eof) (void *user); // returns nonzero if we are at end of file/data +} stbi_io_callbacks; + +//////////////////////////////////// +// +// 8-bits-per-channel interface +// + +STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *channels_in_file, int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +// for stbi_load_from_file, file pointer is left pointing immediately after image +#endif + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +#endif + +#ifdef STBI_WINDOWS_UTF8 +STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); +#endif + +//////////////////////////////////// +// +// 16-bits-per-channel interface +// + +STBIDEF stbi_us *stbi_load_16_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_us *stbi_load_16 (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_from_file_16(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +#endif + +//////////////////////////////////// +// +// float-per-channel interface +// +#ifndef STBI_NO_LINEAR + STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); + STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); + + #ifndef STBI_NO_STDIO + STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); + STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); + #endif +#endif + +#ifndef STBI_NO_HDR + STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); + STBIDEF void stbi_hdr_to_ldr_scale(float scale); +#endif // STBI_NO_HDR + +#ifndef STBI_NO_LINEAR + STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); + STBIDEF void stbi_ldr_to_hdr_scale(float scale); +#endif // STBI_NO_LINEAR + +// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename); +STBIDEF int stbi_is_hdr_from_file(FILE *f); +#endif // STBI_NO_STDIO + + +// get a VERY brief reason for failure +// on most compilers (and ALL modern mainstream compilers) this is threadsafe +STBIDEF const char *stbi_failure_reason (void); + +// free the loaded image -- this is just free() +STBIDEF void stbi_image_free (void *retval_from_stbi_load); + +// get image dimensions & components without fully decoding +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len); +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *clbk, void *user); + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit (char const *filename); +STBIDEF int stbi_is_16_bit_from_file(FILE *f); +#endif + + + +// for image formats that explicitly notate that they have premultiplied alpha, +// we just return the colors as stored in the file. set this flag to force +// unpremultiplication. results are undefined if the unpremultiply overflow. +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); + +// indicate whether we should process iphone images back to canonical format, +// or just pass them through "as-is" +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); + +// flip the image vertically, so the first pixel in the output array is the bottom left +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); + +// as above, but only applies to images loaded on the thread that calls the function +// this function is only available if your compiler supports thread-local variables; +// calling it will fail to link if your compiler doesn't +STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip); + +// ZLIB client - used by PNG, available for other purposes + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); +STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + +STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + +#ifdef __cplusplus +} +#endif + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBI_INCLUDE_STB_IMAGE_H + +#ifdef STB_IMAGE_IMPLEMENTATION + +#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ + || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ + || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ + || defined(STBI_ONLY_ZLIB) + #ifndef STBI_ONLY_JPEG + #define STBI_NO_JPEG + #endif + #ifndef STBI_ONLY_PNG + #define STBI_NO_PNG + #endif + #ifndef STBI_ONLY_BMP + #define STBI_NO_BMP + #endif + #ifndef STBI_ONLY_PSD + #define STBI_NO_PSD + #endif + #ifndef STBI_ONLY_TGA + #define STBI_NO_TGA + #endif + #ifndef STBI_ONLY_GIF + #define STBI_NO_GIF + #endif + #ifndef STBI_ONLY_HDR + #define STBI_NO_HDR + #endif + #ifndef STBI_ONLY_PIC + #define STBI_NO_PIC + #endif + #ifndef STBI_ONLY_PNM + #define STBI_NO_PNM + #endif +#endif + +#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) +#define STBI_NO_ZLIB +#endif + + +#include +#include // ptrdiff_t on osx +#include +#include +#include + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +#include // ldexp, pow +#endif + +#ifndef STBI_NO_STDIO +#include +#endif + +#ifndef STBI_ASSERT +#include +#define STBI_ASSERT(x) assert(x) +#endif + +#ifdef __cplusplus +#define STBI_EXTERN extern "C" +#else +#define STBI_EXTERN extern +#endif + + +#ifndef _MSC_VER + #ifdef __cplusplus + #define stbi_inline inline + #else + #define stbi_inline + #endif +#else + #define stbi_inline __forceinline +#endif + +#ifndef STBI_NO_THREAD_LOCALS + #if defined(__cplusplus) && __cplusplus >= 201103L + #define STBI_THREAD_LOCAL thread_local + #elif defined(__GNUC__) && __GNUC__ < 5 + #define STBI_THREAD_LOCAL __thread + #elif defined(_MSC_VER) + #define STBI_THREAD_LOCAL __declspec(thread) + #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_THREADS__) + #define STBI_THREAD_LOCAL _Thread_local + #endif + + #ifndef STBI_THREAD_LOCAL + #if defined(__GNUC__) + #define STBI_THREAD_LOCAL __thread + #endif + #endif +#endif + +#ifdef _MSC_VER +typedef unsigned short stbi__uint16; +typedef signed short stbi__int16; +typedef unsigned int stbi__uint32; +typedef signed int stbi__int32; +#else +#include +typedef uint16_t stbi__uint16; +typedef int16_t stbi__int16; +typedef uint32_t stbi__uint32; +typedef int32_t stbi__int32; +#endif + +// should produce compiler error if size is wrong +typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBI_NOTUSED(v) (void)(v) +#else +#define STBI_NOTUSED(v) (void)sizeof(v) +#endif + +#ifdef _MSC_VER +#define STBI_HAS_LROTL +#endif + +#ifdef STBI_HAS_LROTL + #define stbi_lrot(x,y) _lrotl(x,y) +#else + #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) +#endif + +#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) +// ok +#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) +// ok +#else +#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." +#endif + +#ifndef STBI_MALLOC +#define STBI_MALLOC(sz) malloc(sz) +#define STBI_REALLOC(p,newsz) realloc(p,newsz) +#define STBI_FREE(p) free(p) +#endif + +#ifndef STBI_REALLOC_SIZED +#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) +#endif + +// x86/x64 detection +#if defined(__x86_64__) || defined(_M_X64) +#define STBI__X64_TARGET +#elif defined(__i386) || defined(_M_IX86) +#define STBI__X86_TARGET +#endif + +#if defined(__GNUC__) && defined(STBI__X86_TARGET) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) +// gcc doesn't support sse2 intrinsics unless you compile with -msse2, +// which in turn means it gets to use SSE2 everywhere. This is unfortunate, +// but previous attempts to provide the SSE2 functions with runtime +// detection caused numerous issues. The way architecture extensions are +// exposed in GCC/Clang is, sadly, not really suited for one-file libs. +// New behavior: if compiled with -msse2, we use SSE2 without any +// detection; if not, we don't use it at all. +#define STBI_NO_SIMD +#endif + +#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) +// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET +// +// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the +// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. +// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not +// simultaneously enabling "-mstackrealign". +// +// See https://github.com/nothings/stb/issues/81 for more information. +// +// So default to no SSE2 on 32-bit MinGW. If you've read this far and added +// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. +#define STBI_NO_SIMD +#endif + +#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) +#define STBI_SSE2 +#include + +#ifdef _MSC_VER + +#if _MSC_VER >= 1400 // not VC6 +#include // __cpuid +static int stbi__cpuid3(void) +{ + int info[4]; + __cpuid(info,1); + return info[3]; +} +#else +static int stbi__cpuid3(void) +{ + int res; + __asm { + mov eax,1 + cpuid + mov res,edx + } + return res; +} +#endif + +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name + +#if !defined(STBI_NO_JPEG) && defined(STBI_SSE2) +static int stbi__sse2_available(void) +{ + int info3 = stbi__cpuid3(); + return ((info3 >> 26) & 1) != 0; +} +#endif + +#else // assume GCC-style if not VC++ +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) + +#if !defined(STBI_NO_JPEG) && defined(STBI_SSE2) +static int stbi__sse2_available(void) +{ + // If we're even attempting to compile this on GCC/Clang, that means + // -msse2 is on, which means the compiler is allowed to use SSE2 + // instructions at will, and so are we. + return 1; +} +#endif + +#endif +#endif + +// ARM NEON +#if defined(STBI_NO_SIMD) && defined(STBI_NEON) +#undef STBI_NEON +#endif + +#ifdef STBI_NEON +#include +// assume GCC or Clang on ARM targets +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) +#endif + +#ifndef STBI_SIMD_ALIGN +#define STBI_SIMD_ALIGN(type, name) type name +#endif + +#ifndef STBI_MAX_DIMENSIONS +#define STBI_MAX_DIMENSIONS (1 << 24) +#endif + +/////////////////////////////////////////////// +// +// stbi__context struct and start_xxx functions + +// stbi__context structure is our basic context used by all images, so it +// contains all the IO context, plus some basic image information +typedef struct +{ + stbi__uint32 img_x, img_y; + int img_n, img_out_n; + + stbi_io_callbacks io; + void *io_user_data; + + int read_from_callbacks; + int buflen; + stbi_uc buffer_start[128]; + int callback_already_read; + + stbi_uc *img_buffer, *img_buffer_end; + stbi_uc *img_buffer_original, *img_buffer_original_end; +} stbi__context; + + +static void stbi__refill_buffer(stbi__context *s); + +// initialize a memory-decode context +static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) +{ + s->io.read = NULL; + s->read_from_callbacks = 0; + s->callback_already_read = 0; + s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; + s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; +} + +// initialize a callback-based context +static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) +{ + s->io = *c; + s->io_user_data = user; + s->buflen = sizeof(s->buffer_start); + s->read_from_callbacks = 1; + s->callback_already_read = 0; + s->img_buffer = s->img_buffer_original = s->buffer_start; + stbi__refill_buffer(s); + s->img_buffer_original_end = s->img_buffer_end; +} + +#ifndef STBI_NO_STDIO + +static int stbi__stdio_read(void *user, char *data, int size) +{ + return (int) fread(data,1,size,(FILE*) user); +} + +static void stbi__stdio_skip(void *user, int n) +{ + int ch; + fseek((FILE*) user, n, SEEK_CUR); + ch = fgetc((FILE*) user); /* have to read a byte to reset feof()'s flag */ + if (ch != EOF) { + ungetc(ch, (FILE *) user); /* push byte back onto stream if valid. */ + } +} + +static int stbi__stdio_eof(void *user) +{ + return feof((FILE*) user) || ferror((FILE *) user); +} + +static stbi_io_callbacks stbi__stdio_callbacks = +{ + stbi__stdio_read, + stbi__stdio_skip, + stbi__stdio_eof, +}; + +static void stbi__start_file(stbi__context *s, FILE *f) +{ + stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); +} + +//static void stop_file(stbi__context *s) { } + +#endif // !STBI_NO_STDIO + +static void stbi__rewind(stbi__context *s) +{ + // conceptually rewind SHOULD rewind to the beginning of the stream, + // but we just rewind to the beginning of the initial buffer, because + // we only use it after doing 'test', which only ever looks at at most 92 bytes + s->img_buffer = s->img_buffer_original; + s->img_buffer_end = s->img_buffer_original_end; +} + +enum +{ + STBI_ORDER_RGB, + STBI_ORDER_BGR +}; + +typedef struct +{ + int bits_per_channel; + int num_channels; + int channel_order; +} stbi__result_info; + +#ifndef STBI_NO_JPEG +static int stbi__jpeg_test(stbi__context *s); +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNG +static int stbi__png_test(stbi__context *s); +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__png_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_BMP +static int stbi__bmp_test(stbi__context *s); +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_TGA +static int stbi__tga_test(stbi__context *s); +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s); +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc); +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__psd_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_HDR +static int stbi__hdr_test(stbi__context *s); +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_test(stbi__context *s); +static void *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_GIF +static int stbi__gif_test(stbi__context *s); +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNM +static int stbi__pnm_test(stbi__context *s); +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +static +#ifdef STBI_THREAD_LOCAL +STBI_THREAD_LOCAL +#endif +const char *stbi__g_failure_reason; + +STBIDEF const char *stbi_failure_reason(void) +{ + return stbi__g_failure_reason; +} + +#ifndef STBI_NO_FAILURE_STRINGS +static int stbi__err(const char *str) +{ + stbi__g_failure_reason = str; + return 0; +} +#endif + +static void *stbi__malloc(size_t size) +{ + return STBI_MALLOC(size); +} + +// stb_image uses ints pervasively, including for offset calculations. +// therefore the largest decoded image size we can support with the +// current code, even on 64-bit targets, is INT_MAX. this is not a +// significant limitation for the intended use case. +// +// we do, however, need to make sure our size calculations don't +// overflow. hence a few helper functions for size calculations that +// multiply integers together, making sure that they're non-negative +// and no overflow occurs. + +// return 1 if the sum is valid, 0 on overflow. +// negative terms are considered invalid. +static int stbi__addsizes_valid(int a, int b) +{ + if (b < 0) return 0; + // now 0 <= b <= INT_MAX, hence also + // 0 <= INT_MAX - b <= INTMAX. + // And "a + b <= INT_MAX" (which might overflow) is the + // same as a <= INT_MAX - b (no overflow) + return a <= INT_MAX - b; +} + +// returns 1 if the product is valid, 0 on overflow. +// negative factors are considered invalid. +static int stbi__mul2sizes_valid(int a, int b) +{ + if (a < 0 || b < 0) return 0; + if (b == 0) return 1; // mul-by-0 is always safe + // portable way to check for no overflows in a*b + return a <= INT_MAX/b; +} + +#if !defined(STBI_NO_JPEG) || !defined(STBI_NO_PNG) || !defined(STBI_NO_TGA) || !defined(STBI_NO_HDR) +// returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow +static int stbi__mad2sizes_valid(int a, int b, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a*b, add); +} +#endif + +// returns 1 if "a*b*c + add" has no negative terms/factors and doesn't overflow +static int stbi__mad3sizes_valid(int a, int b, int c, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && + stbi__addsizes_valid(a*b*c, add); +} + +// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && + stbi__mul2sizes_valid(a*b*c, d) && stbi__addsizes_valid(a*b*c*d, add); +} +#endif + +#if !defined(STBI_NO_JPEG) || !defined(STBI_NO_PNG) || !defined(STBI_NO_TGA) || !defined(STBI_NO_HDR) +// mallocs with size overflow checking +static void *stbi__malloc_mad2(int a, int b, int add) +{ + if (!stbi__mad2sizes_valid(a, b, add)) return NULL; + return stbi__malloc(a*b + add); +} +#endif + +static void *stbi__malloc_mad3(int a, int b, int c, int add) +{ + if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; + return stbi__malloc(a*b*c + add); +} + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +static void *stbi__malloc_mad4(int a, int b, int c, int d, int add) +{ + if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL; + return stbi__malloc(a*b*c*d + add); +} +#endif + +// stbi__err - error +// stbi__errpf - error returning pointer to float +// stbi__errpuc - error returning pointer to unsigned char + +#ifdef STBI_NO_FAILURE_STRINGS + #define stbi__err(x,y) 0 +#elif defined(STBI_FAILURE_USERMSG) + #define stbi__err(x,y) stbi__err(y) +#else + #define stbi__err(x,y) stbi__err(x) +#endif + +#define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) +#define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) + +STBIDEF void stbi_image_free(void *retval_from_stbi_load) +{ + STBI_FREE(retval_from_stbi_load); +} + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); +#endif + +#ifndef STBI_NO_HDR +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); +#endif + +static int stbi__vertically_flip_on_load_global = 0; + +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load_global = flag_true_if_should_flip; +} + +#ifndef STBI_THREAD_LOCAL +#define stbi__vertically_flip_on_load stbi__vertically_flip_on_load_global +#else +static STBI_THREAD_LOCAL int stbi__vertically_flip_on_load_local, stbi__vertically_flip_on_load_set; + +STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load_local = flag_true_if_should_flip; + stbi__vertically_flip_on_load_set = 1; +} + +#define stbi__vertically_flip_on_load (stbi__vertically_flip_on_load_set \ + ? stbi__vertically_flip_on_load_local \ + : stbi__vertically_flip_on_load_global) +#endif // STBI_THREAD_LOCAL + +static void *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + memset(ri, 0, sizeof(*ri)); // make sure it's initialized if we add new fields + ri->bits_per_channel = 8; // default is 8 so most paths don't have to be changed + ri->channel_order = STBI_ORDER_RGB; // all current input & output are this, but this is here so we can add BGR order + ri->num_channels = 0; + + #ifndef STBI_NO_JPEG + if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PNG + if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_BMP + if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_GIF + if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PSD + if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp, ri, bpc); + #else + STBI_NOTUSED(bpc); + #endif + #ifndef STBI_NO_PIC + if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PNM + if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp, ri); + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr = stbi__hdr_load(s, x,y,comp,req_comp, ri); + return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); + } + #endif + + #ifndef STBI_NO_TGA + // test tga last because it's a crappy test! + if (stbi__tga_test(s)) + return stbi__tga_load(s,x,y,comp,req_comp, ri); + #endif + + return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); +} + +static stbi_uc *stbi__convert_16_to_8(stbi__uint16 *orig, int w, int h, int channels) +{ + int i; + int img_len = w * h * channels; + stbi_uc *reduced; + + reduced = (stbi_uc *) stbi__malloc(img_len); + if (reduced == NULL) return stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + reduced[i] = (stbi_uc)((orig[i] >> 8) & 0xFF); // top half of each byte is sufficient approx of 16->8 bit scaling + + STBI_FREE(orig); + return reduced; +} + +static stbi__uint16 *stbi__convert_8_to_16(stbi_uc *orig, int w, int h, int channels) +{ + int i; + int img_len = w * h * channels; + stbi__uint16 *enlarged; + + enlarged = (stbi__uint16 *) stbi__malloc(img_len*2); + if (enlarged == NULL) return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + enlarged[i] = (stbi__uint16)((orig[i] << 8) + orig[i]); // replicate to high and low byte, maps 0->0, 255->0xffff + + STBI_FREE(orig); + return enlarged; +} + +static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) +{ + int row; + size_t bytes_per_row = (size_t)w * bytes_per_pixel; + stbi_uc temp[2048]; + stbi_uc *bytes = (stbi_uc *)image; + + for (row = 0; row < (h>>1); row++) { + stbi_uc *row0 = bytes + row*bytes_per_row; + stbi_uc *row1 = bytes + (h - row - 1)*bytes_per_row; + // swap row0 with row1 + size_t bytes_left = bytes_per_row; + while (bytes_left) { + size_t bytes_copy = (bytes_left < sizeof(temp)) ? bytes_left : sizeof(temp); + memcpy(temp, row0, bytes_copy); + memcpy(row0, row1, bytes_copy); + memcpy(row1, temp, bytes_copy); + row0 += bytes_copy; + row1 += bytes_copy; + bytes_left -= bytes_copy; + } + } +} + +#ifndef STBI_NO_GIF +static void stbi__vertical_flip_slices(void *image, int w, int h, int z, int bytes_per_pixel) +{ + int slice; + int slice_size = w * h * bytes_per_pixel; + + stbi_uc *bytes = (stbi_uc *)image; + for (slice = 0; slice < z; ++slice) { + stbi__vertical_flip(bytes, w, h, bytes_per_pixel); + bytes += slice_size; + } +} +#endif + +static unsigned char *stbi__load_and_postprocess_8bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 8); + + if (result == NULL) + return NULL; + + // it is the responsibility of the loaders to make sure we get either 8 or 16 bit. + STBI_ASSERT(ri.bits_per_channel == 8 || ri.bits_per_channel == 16); + + if (ri.bits_per_channel != 8) { + result = stbi__convert_16_to_8((stbi__uint16 *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 8; + } + + // @TODO: move stbi__convert_format to here + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi_uc)); + } + + return (unsigned char *) result; +} + +static stbi__uint16 *stbi__load_and_postprocess_16bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 16); + + if (result == NULL) + return NULL; + + // it is the responsibility of the loaders to make sure we get either 8 or 16 bit. + STBI_ASSERT(ri.bits_per_channel == 8 || ri.bits_per_channel == 16); + + if (ri.bits_per_channel != 16) { + result = stbi__convert_8_to_16((stbi_uc *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 16; + } + + // @TODO: move stbi__convert_format16 to here + // @TODO: special case RGB-to-Y (and RGBA-to-YA) for 8-bit-to-16-bit case to keep more precision + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi__uint16)); + } + + return (stbi__uint16 *) result; +} + +#if !defined(STBI_NO_HDR) && !defined(STBI_NO_LINEAR) +static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) +{ + if (stbi__vertically_flip_on_load && result != NULL) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(float)); + } +} +#endif + +#ifndef STBI_NO_STDIO + +#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) +STBI_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide); +STBI_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default); +#endif + +#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) +STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) +{ + return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); +} +#endif + +static FILE *stbi__fopen(char const *filename, char const *mode) +{ + FILE *f; +#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) + wchar_t wMode[64]; + wchar_t wFilename[1024]; + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename))) + return 0; + + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode))) + return 0; + +#if _MSC_VER >= 1400 + if (0 != _wfopen_s(&f, wFilename, wMode)) + f = 0; +#else + f = _wfopen(wFilename, wMode); +#endif + +#elif defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + + +STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + unsigned char *result; + if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi__uint16 *stbi_load_from_file_16(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__uint16 *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_and_postprocess_16bit(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + stbi__uint16 *result; + if (!f) return (stbi_us *) stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file_16(f,x,y,comp,req_comp); + fclose(f); + return result; +} + + +#endif //!STBI_NO_STDIO + +STBIDEF stbi_us *stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); +} + +STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *)clbk, user); + return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); +} + +STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); +} + +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_mem(&s,buffer,len); + + result = (unsigned char*) stbi__load_gif_main(&s, delays, x, y, z, comp, req_comp); + if (stbi__vertically_flip_on_load) { + stbi__vertical_flip_slices( result, *x, *y, *z, *comp ); + } + + return result; +} +#endif + +#ifndef STBI_NO_LINEAR +static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *data; + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + stbi__result_info ri; + float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp, &ri); + if (hdr_data) + stbi__float_postprocess(hdr_data,x,y,comp,req_comp); + return hdr_data; + } + #endif + data = stbi__load_and_postprocess_8bit(s, x, y, comp, req_comp); + if (data) + return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); + return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); +} + +STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_STDIO +STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + float *result; + FILE *f = stbi__fopen(filename, "rb"); + if (!f) return stbi__errpf("can't fopen", "Unable to open file"); + result = stbi_loadf_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_file(&s,f); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} +#endif // !STBI_NO_STDIO + +#endif // !STBI_NO_LINEAR + +// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is +// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always +// reports false! + +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(buffer); + STBI_NOTUSED(len); + return 0; + #endif +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result=0; + if (f) { + result = stbi_is_hdr_from_file(f); + fclose(f); + } + return result; +} + +STBIDEF int stbi_is_hdr_from_file(FILE *f) +{ + #ifndef STBI_NO_HDR + long pos = ftell(f); + int res; + stbi__context s; + stbi__start_file(&s,f); + res = stbi__hdr_test(&s); + fseek(f, pos, SEEK_SET); + return res; + #else + STBI_NOTUSED(f); + return 0; + #endif +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(clbk); + STBI_NOTUSED(user); + return 0; + #endif +} + +#ifndef STBI_NO_LINEAR +static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; + +STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } +STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } +#endif + +static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; + +STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } +STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } + + +////////////////////////////////////////////////////////////////////////////// +// +// Common code used by all image loaders +// + +enum +{ + STBI__SCAN_load=0, + STBI__SCAN_type, + STBI__SCAN_header +}; + +static void stbi__refill_buffer(stbi__context *s) +{ + int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); + s->callback_already_read += (int) (s->img_buffer - s->img_buffer_original); + if (n == 0) { + // at end of file, treat same as if from memory, but need to handle case + // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file + s->read_from_callbacks = 0; + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start+1; + *s->img_buffer = 0; + } else { + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + n; + } +} + +stbi_inline static stbi_uc stbi__get8(stbi__context *s) +{ + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + if (s->read_from_callbacks) { + stbi__refill_buffer(s); + return *s->img_buffer++; + } + return 0; +} + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_HDR) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +stbi_inline static int stbi__at_eof(stbi__context *s) +{ + if (s->io.read) { + if (!(s->io.eof)(s->io_user_data)) return 0; + // if feof() is true, check if buffer = end + // special case: we've only got the special 0 character at the end + if (s->read_from_callbacks == 0) return 1; + } + + return s->img_buffer >= s->img_buffer_end; +} +#endif + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) +// nothing +#else +static void stbi__skip(stbi__context *s, int n) +{ + if (n == 0) return; // already there! + if (n < 0) { + s->img_buffer = s->img_buffer_end; + return; + } + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + s->img_buffer = s->img_buffer_end; + (s->io.skip)(s->io_user_data, n - blen); + return; + } + } + s->img_buffer += n; +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_TGA) && defined(STBI_NO_HDR) && defined(STBI_NO_PNM) +// nothing +#else +static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) +{ + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + int res, count; + + memcpy(buffer, s->img_buffer, blen); + + count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); + res = (count == (n-blen)); + s->img_buffer = s->img_buffer_end; + return res; + } + } + + if (s->img_buffer+n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} +#endif + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PIC) +// nothing +#else +static int stbi__get16be(stbi__context *s) +{ + int z = stbi__get8(s); + return (z << 8) + stbi__get8(s); +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PIC) +// nothing +#else +static stbi__uint32 stbi__get32be(stbi__context *s) +{ + stbi__uint32 z = stbi__get16be(s); + return (z << 16) + stbi__get16be(s); +} +#endif + +#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) +// nothing +#else +static int stbi__get16le(stbi__context *s) +{ + int z = stbi__get8(s); + return z + (stbi__get8(s) << 8); +} +#endif + +#ifndef STBI_NO_BMP +static stbi__uint32 stbi__get32le(stbi__context *s) +{ + stbi__uint32 z = stbi__get16le(s); + return z + (stbi__get16le(s) << 16); +} +#endif + +#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +////////////////////////////////////////////////////////////////////////////// +// +// generic converter from built-in img_n to req_comp +// individual types do this automatically as much as possible (e.g. jpeg +// does all cases internally since it needs to colorspace convert anyway, +// and it never has alpha, so very few cases ). png can automatically +// interleave an alpha=255 channel, but falls back to this for other cases +// +// assume data buffer is malloced, so malloc a new one and free that one +// only failure mode is malloc failing + +static stbi_uc stbi__compute_y(int r, int g, int b) +{ + return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); + if (good == NULL) { + STBI_FREE(data); + return stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n ; + unsigned char *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0]; dest[1]=255; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=255; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2];dest[3]=255; } break; + STBI__CASE(3,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); dest[1] = 255; } break; + STBI__CASE(4,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2]; } break; + default: STBI_ASSERT(0); STBI_FREE(data); STBI_FREE(good); return stbi__errpuc("unsupported", "Unsupported format conversion"); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) +// nothing +#else +static stbi__uint16 stbi__compute_y_16(int r, int g, int b) +{ + return (stbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) +// nothing +#else +static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + stbi__uint16 *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); + if (good == NULL) { + STBI_FREE(data); + return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + stbi__uint16 *src = data + j * x * img_n ; + stbi__uint16 *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0]; dest[1]=0xffff; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=0xffff; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2];dest[3]=0xffff; } break; + STBI__CASE(3,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); dest[1] = 0xffff; } break; + STBI__CASE(4,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2]; } break; + default: STBI_ASSERT(0); STBI_FREE(data); STBI_FREE(good); return (stbi__uint16*) stbi__errpuc("unsupported", "Unsupported format conversion"); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} +#endif + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) +{ + int i,k,n; + float *output; + if (!data) return NULL; + output = (float *) stbi__malloc_mad4(x, y, comp, sizeof(float), 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); + } + } + if (n < comp) { + for (i=0; i < x*y; ++i) { + output[i*comp + n] = data[i*comp + n]/255.0f; + } + } + STBI_FREE(data); + return output; +} +#endif + +#ifndef STBI_NO_HDR +#define stbi__float2int(x) ((int) (x)) +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) +{ + int i,k,n; + stbi_uc *output; + if (!data) return NULL; + output = (stbi_uc *) stbi__malloc_mad3(x, y, comp, 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + if (k < comp) { + float z = data[i*comp+k] * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + } + STBI_FREE(data); + return output; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// "baseline" JPEG/JFIF decoder +// +// simple implementation +// - doesn't support delayed output of y-dimension +// - simple interface (only one output format: 8-bit interleaved RGB) +// - doesn't try to recover corrupt jpegs +// - doesn't allow partial loading, loading multiple at once +// - still fast on x86 (copying globals into locals doesn't help x86) +// - allocates lots of intermediate memory (full size of all components) +// - non-interleaved case requires this anyway +// - allows good upsampling (see next) +// high-quality +// - upsampled channels are bilinearly interpolated, even across blocks +// - quality integer IDCT derived from IJG's 'slow' +// performance +// - fast huffman; reasonable integer IDCT +// - some SIMD kernels for common paths on targets with SSE2/NEON +// - uses a lot of intermediate memory, could cache poorly + +#ifndef STBI_NO_JPEG + +// huffman decoding acceleration +#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache + +typedef struct +{ + stbi_uc fast[1 << FAST_BITS]; + // weirdly, repacking this into AoS is a 10% speed loss, instead of a win + stbi__uint16 code[256]; + stbi_uc values[256]; + stbi_uc size[257]; + unsigned int maxcode[18]; + int delta[17]; // old 'firstsymbol' - old 'firstcode' +} stbi__huffman; + +typedef struct +{ + stbi__context *s; + stbi__huffman huff_dc[4]; + stbi__huffman huff_ac[4]; + stbi__uint16 dequant[4][64]; + stbi__int16 fast_ac[4][1 << FAST_BITS]; + +// sizes for components, interleaved MCUs + int img_h_max, img_v_max; + int img_mcu_x, img_mcu_y; + int img_mcu_w, img_mcu_h; + +// definition of jpeg image component + struct + { + int id; + int h,v; + int tq; + int hd,ha; + int dc_pred; + + int x,y,w2,h2; + stbi_uc *data; + void *raw_data, *raw_coeff; + stbi_uc *linebuf; + short *coeff; // progressive only + int coeff_w, coeff_h; // number of 8x8 coefficient blocks + } img_comp[4]; + + stbi__uint32 code_buffer; // jpeg entropy-coded buffer + int code_bits; // number of valid bits + unsigned char marker; // marker seen while filling entropy buffer + int nomore; // flag if we saw a marker so must stop + + int progressive; + int spec_start; + int spec_end; + int succ_high; + int succ_low; + int eob_run; + int jfif; + int app14_color_transform; // Adobe APP14 tag + int rgb; + + int scan_n, order[4]; + int restart_interval, todo; + +// kernels + void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); + void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); + stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); +} stbi__jpeg; + +static int stbi__build_huffman(stbi__huffman *h, int *count) +{ + int i,j,k=0; + unsigned int code; + // build size list for each symbol (from JPEG spec) + for (i=0; i < 16; ++i) + for (j=0; j < count[i]; ++j) + h->size[k++] = (stbi_uc) (i+1); + h->size[k] = 0; + + // compute actual symbols (from jpeg spec) + code = 0; + k = 0; + for(j=1; j <= 16; ++j) { + // compute delta to add to code to compute symbol id + h->delta[j] = k - code; + if (h->size[k] == j) { + while (h->size[k] == j) + h->code[k++] = (stbi__uint16) (code++); + if (code-1 >= (1u << j)) return stbi__err("bad code lengths","Corrupt JPEG"); + } + // compute largest code + 1 for this size, preshifted as needed later + h->maxcode[j] = code << (16-j); + code <<= 1; + } + h->maxcode[j] = 0xffffffff; + + // build non-spec acceleration table; 255 is flag for not-accelerated + memset(h->fast, 255, 1 << FAST_BITS); + for (i=0; i < k; ++i) { + int s = h->size[i]; + if (s <= FAST_BITS) { + int c = h->code[i] << (FAST_BITS-s); + int m = 1 << (FAST_BITS-s); + for (j=0; j < m; ++j) { + h->fast[c+j] = (stbi_uc) i; + } + } + } + return 1; +} + +// build a table that decodes both magnitude and value of small ACs in +// one go. +static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) +{ + int i; + for (i=0; i < (1 << FAST_BITS); ++i) { + stbi_uc fast = h->fast[i]; + fast_ac[i] = 0; + if (fast < 255) { + int rs = h->values[fast]; + int run = (rs >> 4) & 15; + int magbits = rs & 15; + int len = h->size[fast]; + + if (magbits && len + magbits <= FAST_BITS) { + // magnitude code followed by receive_extend code + int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); + int m = 1 << (magbits - 1); + if (k < m) k += (~0U << magbits) + 1; + // if the result is small enough, we can fit it in fast_ac table + if (k >= -128 && k <= 127) + fast_ac[i] = (stbi__int16) ((k * 256) + (run * 16) + (len + magbits)); + } + } + } +} + +static void stbi__grow_buffer_unsafe(stbi__jpeg *j) +{ + do { + unsigned int b = j->nomore ? 0 : stbi__get8(j->s); + if (b == 0xff) { + int c = stbi__get8(j->s); + while (c == 0xff) c = stbi__get8(j->s); // consume fill bytes + if (c != 0) { + j->marker = (unsigned char) c; + j->nomore = 1; + return; + } + } + j->code_buffer |= b << (24 - j->code_bits); + j->code_bits += 8; + } while (j->code_bits <= 24); +} + +// (1 << n) - 1 +static const stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; + +// decode a jpeg huffman value from the bitstream +stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) +{ + unsigned int temp; + int c,k; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + // look at the top FAST_BITS and determine what symbol ID it is, + // if the code is <= FAST_BITS + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + k = h->fast[c]; + if (k < 255) { + int s = h->size[k]; + if (s > j->code_bits) + return -1; + j->code_buffer <<= s; + j->code_bits -= s; + return h->values[k]; + } + + // naive test is to shift the code_buffer down so k bits are + // valid, then test against maxcode. To speed this up, we've + // preshifted maxcode left so that it has (16-k) 0s at the + // end; in other words, regardless of the number of bits, it + // wants to be compared against something shifted to have 16; + // that way we don't need to shift inside the loop. + temp = j->code_buffer >> 16; + for (k=FAST_BITS+1 ; ; ++k) + if (temp < h->maxcode[k]) + break; + if (k == 17) { + // error! code not found + j->code_bits -= 16; + return -1; + } + + if (k > j->code_bits) + return -1; + + // convert the huffman code to the symbol id + c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; + STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); + + // convert the id to a symbol + j->code_bits -= k; + j->code_buffer <<= k; + return h->values[c]; +} + +// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); + + sgn = (stbi__int32)j->code_buffer >> 31; // sign bit is always in MSB + k = stbi_lrot(j->code_buffer, n); + if (n < 0 || n >= (int) (sizeof(stbi__bmask)/sizeof(*stbi__bmask))) return 0; + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k + (stbi__jbias[n] & ~sgn); +} + +// get some unsigned bits +stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) +{ + unsigned int k; + if (j->code_bits < n) stbi__grow_buffer_unsafe(j); + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k; +} + +stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) +{ + unsigned int k; + if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); + k = j->code_buffer; + j->code_buffer <<= 1; + --j->code_bits; + return k & 0x80000000; +} + +// given a value that's at position X in the zigzag stream, +// where does it appear in the 8x8 matrix coded as row-major? +static const stbi_uc stbi__jpeg_dezigzag[64+15] = +{ + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63, + // let corrupt input sample past end + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63 +}; + +// decode one 64-entry block-- +static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi__uint16 *dequant) +{ + int diff,dc,k; + int t; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + + // 0 all the ac values now so we can do it 32-bits at a time + memset(data,0,64*sizeof(data[0])); + + diff = t ? stbi__extend_receive(j, t) : 0; + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) (dc * dequant[0]); + + // decode AC components, see JPEG spec + k = 1; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + j->code_buffer <<= s; + j->code_bits -= s; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * dequant[zig]); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (rs != 0xf0) break; // end block + k += 16; + } else { + k += r; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); + } + } + } while (k < 64); + return 1; +} + +static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) +{ + int diff,dc; + int t; + if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + if (j->succ_high == 0) { + // first scan for DC coefficient, must be first + memset(data,0,64*sizeof(data[0])); // 0 all the ac values now + t = stbi__jpeg_huff_decode(j, hdc); + if (t == -1) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + diff = t ? stbi__extend_receive(j, t) : 0; + + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) (dc << j->succ_low); + } else { + // refinement scan for DC coefficient + if (stbi__jpeg_get_bit(j)) + data[0] += (short) (1 << j->succ_low); + } + return 1; +} + +// @OPTIMIZE: store non-zigzagged during the decode passes, +// and only de-zigzag when dequantizing +static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) +{ + int k; + if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->succ_high == 0) { + int shift = j->succ_low; + + if (j->eob_run) { + --j->eob_run; + return 1; + } + + k = j->spec_start; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + j->code_buffer <<= s; + j->code_bits -= s; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) << shift); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r); + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + --j->eob_run; + break; + } + k += 16; + } else { + k += r; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) << shift); + } + } + } while (k <= j->spec_end); + } else { + // refinement scan for these AC coefficients + + short bit = (short) (1 << j->succ_low); + + if (j->eob_run) { + --j->eob_run; + for (k = j->spec_start; k <= j->spec_end; ++k) { + short *p = &data[stbi__jpeg_dezigzag[k]]; + if (*p != 0) + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } + } else { + k = j->spec_start; + do { + int r,s; + int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r) - 1; + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + r = 64; // force end of block + } else { + // r=15 s=0 should write 16 0s, so we just do + // a run of 15 0s and then write s (which is 0), + // so we don't have to do anything special here + } + } else { + if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); + // sign bit + if (stbi__jpeg_get_bit(j)) + s = bit; + else + s = -bit; + } + + // advance by r + while (k <= j->spec_end) { + short *p = &data[stbi__jpeg_dezigzag[k++]]; + if (*p != 0) { + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } else { + if (r == 0) { + *p = (short) s; + break; + } + --r; + } + } + } while (k <= j->spec_end); + } + } + return 1; +} + +// take a -128..127 value and stbi__clamp it and convert to 0..255 +stbi_inline static stbi_uc stbi__clamp(int x) +{ + // trick to use a single test to catch both cases + if ((unsigned int) x > 255) { + if (x < 0) return 0; + if (x > 255) return 255; + } + return (stbi_uc) x; +} + +#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) +#define stbi__fsh(x) ((x) * 4096) + +// derived from jidctint -- DCT_ISLOW +#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ + int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ + p2 = s2; \ + p3 = s6; \ + p1 = (p2+p3) * stbi__f2f(0.5411961f); \ + t2 = p1 + p3*stbi__f2f(-1.847759065f); \ + t3 = p1 + p2*stbi__f2f( 0.765366865f); \ + p2 = s0; \ + p3 = s4; \ + t0 = stbi__fsh(p2+p3); \ + t1 = stbi__fsh(p2-p3); \ + x0 = t0+t3; \ + x3 = t0-t3; \ + x1 = t1+t2; \ + x2 = t1-t2; \ + t0 = s7; \ + t1 = s5; \ + t2 = s3; \ + t3 = s1; \ + p3 = t0+t2; \ + p4 = t1+t3; \ + p1 = t0+t3; \ + p2 = t1+t2; \ + p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ + t0 = t0*stbi__f2f( 0.298631336f); \ + t1 = t1*stbi__f2f( 2.053119869f); \ + t2 = t2*stbi__f2f( 3.072711026f); \ + t3 = t3*stbi__f2f( 1.501321110f); \ + p1 = p5 + p1*stbi__f2f(-0.899976223f); \ + p2 = p5 + p2*stbi__f2f(-2.562915447f); \ + p3 = p3*stbi__f2f(-1.961570560f); \ + p4 = p4*stbi__f2f(-0.390180644f); \ + t3 += p1+p4; \ + t2 += p2+p3; \ + t1 += p2+p4; \ + t0 += p1+p3; + +static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) +{ + int i,val[64],*v=val; + stbi_uc *o; + short *d = data; + + // columns + for (i=0; i < 8; ++i,++d, ++v) { + // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing + if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 + && d[40]==0 && d[48]==0 && d[56]==0) { + // no shortcut 0 seconds + // (1|2|3|4|5|6|7)==0 0 seconds + // all separate -0.047 seconds + // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds + int dcterm = d[0]*4; + v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; + } else { + STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) + // constants scaled things up by 1<<12; let's bring them back + // down, but keep 2 extra bits of precision + x0 += 512; x1 += 512; x2 += 512; x3 += 512; + v[ 0] = (x0+t3) >> 10; + v[56] = (x0-t3) >> 10; + v[ 8] = (x1+t2) >> 10; + v[48] = (x1-t2) >> 10; + v[16] = (x2+t1) >> 10; + v[40] = (x2-t1) >> 10; + v[24] = (x3+t0) >> 10; + v[32] = (x3-t0) >> 10; + } + } + + for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { + // no fast case since the first 1D IDCT spread components out + STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) + // constants scaled things up by 1<<12, plus we had 1<<2 from first + // loop, plus horizontal and vertical each scale by sqrt(8) so together + // we've got an extra 1<<3, so 1<<17 total we need to remove. + // so we want to round that, which means adding 0.5 * 1<<17, + // aka 65536. Also, we'll end up with -128 to 127 that we want + // to encode as 0..255 by adding 128, so we'll add that before the shift + x0 += 65536 + (128<<17); + x1 += 65536 + (128<<17); + x2 += 65536 + (128<<17); + x3 += 65536 + (128<<17); + // tried computing the shifts into temps, or'ing the temps to see + // if any were out of range, but that was slower + o[0] = stbi__clamp((x0+t3) >> 17); + o[7] = stbi__clamp((x0-t3) >> 17); + o[1] = stbi__clamp((x1+t2) >> 17); + o[6] = stbi__clamp((x1-t2) >> 17); + o[2] = stbi__clamp((x2+t1) >> 17); + o[5] = stbi__clamp((x2-t1) >> 17); + o[3] = stbi__clamp((x3+t0) >> 17); + o[4] = stbi__clamp((x3-t0) >> 17); + } +} + +#ifdef STBI_SSE2 +// sse2 integer IDCT. not the fastest possible implementation but it +// produces bit-identical results to the generic C version so it's +// fully "transparent". +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + // This is constructed to match our regular (generic) integer IDCT exactly. + __m128i row0, row1, row2, row3, row4, row5, row6, row7; + __m128i tmp; + + // dot product constant: even elems=x, odd elems=y + #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) + + // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) + // out(1) = c1[even]*x + c1[odd]*y + #define dct_rot(out0,out1, x,y,c0,c1) \ + __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ + __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ + __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ + __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ + __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ + __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) + + // out = in << 12 (in 16-bit, out 32-bit) + #define dct_widen(out, in) \ + __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ + __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) + + // wide add + #define dct_wadd(out, a, b) \ + __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_add_epi32(a##_h, b##_h) + + // wide sub + #define dct_wsub(out, a, b) \ + __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) + + // butterfly a/b, add bias, then shift by "s" and pack + #define dct_bfly32o(out0, out1, a,b,bias,s) \ + { \ + __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ + __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ + dct_wadd(sum, abiased, b); \ + dct_wsub(dif, abiased, b); \ + out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ + out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ + } + + // 8-bit interleave step (for transposes) + #define dct_interleave8(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi8(a, b); \ + b = _mm_unpackhi_epi8(tmp, b) + + // 16-bit interleave step (for transposes) + #define dct_interleave16(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi16(a, b); \ + b = _mm_unpackhi_epi16(tmp, b) + + #define dct_pass(bias,shift) \ + { \ + /* even part */ \ + dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ + __m128i sum04 = _mm_add_epi16(row0, row4); \ + __m128i dif04 = _mm_sub_epi16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ + dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ + __m128i sum17 = _mm_add_epi16(row1, row7); \ + __m128i sum35 = _mm_add_epi16(row3, row5); \ + dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ + dct_wadd(x4, y0o, y4o); \ + dct_wadd(x5, y1o, y5o); \ + dct_wadd(x6, y2o, y5o); \ + dct_wadd(x7, y3o, y4o); \ + dct_bfly32o(row0,row7, x0,x7,bias,shift); \ + dct_bfly32o(row1,row6, x1,x6,bias,shift); \ + dct_bfly32o(row2,row5, x2,x5,bias,shift); \ + dct_bfly32o(row3,row4, x3,x4,bias,shift); \ + } + + __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); + __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); + __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); + __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); + __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); + __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); + __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); + __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); + + // rounding biases in column/row passes, see stbi__idct_block for explanation. + __m128i bias_0 = _mm_set1_epi32(512); + __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); + + // load + row0 = _mm_load_si128((const __m128i *) (data + 0*8)); + row1 = _mm_load_si128((const __m128i *) (data + 1*8)); + row2 = _mm_load_si128((const __m128i *) (data + 2*8)); + row3 = _mm_load_si128((const __m128i *) (data + 3*8)); + row4 = _mm_load_si128((const __m128i *) (data + 4*8)); + row5 = _mm_load_si128((const __m128i *) (data + 5*8)); + row6 = _mm_load_si128((const __m128i *) (data + 6*8)); + row7 = _mm_load_si128((const __m128i *) (data + 7*8)); + + // column pass + dct_pass(bias_0, 10); + + { + // 16bit 8x8 transpose pass 1 + dct_interleave16(row0, row4); + dct_interleave16(row1, row5); + dct_interleave16(row2, row6); + dct_interleave16(row3, row7); + + // transpose pass 2 + dct_interleave16(row0, row2); + dct_interleave16(row1, row3); + dct_interleave16(row4, row6); + dct_interleave16(row5, row7); + + // transpose pass 3 + dct_interleave16(row0, row1); + dct_interleave16(row2, row3); + dct_interleave16(row4, row5); + dct_interleave16(row6, row7); + } + + // row pass + dct_pass(bias_1, 17); + + { + // pack + __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 + __m128i p1 = _mm_packus_epi16(row2, row3); + __m128i p2 = _mm_packus_epi16(row4, row5); + __m128i p3 = _mm_packus_epi16(row6, row7); + + // 8bit 8x8 transpose pass 1 + dct_interleave8(p0, p2); // a0e0a1e1... + dct_interleave8(p1, p3); // c0g0c1g1... + + // transpose pass 2 + dct_interleave8(p0, p1); // a0c0e0g0... + dct_interleave8(p2, p3); // b0d0f0h0... + + // transpose pass 3 + dct_interleave8(p0, p2); // a0b0c0d0... + dct_interleave8(p1, p3); // a4b4c4d4... + + // store + _mm_storel_epi64((__m128i *) out, p0); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p2); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p1); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p3); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); + } + +#undef dct_const +#undef dct_rot +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_interleave8 +#undef dct_interleave16 +#undef dct_pass +} + +#endif // STBI_SSE2 + +#ifdef STBI_NEON + +// NEON integer IDCT. should produce bit-identical +// results to the generic C version. +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; + + int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); + int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); + int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); + int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); + int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); + int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); + int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); + int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); + int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); + int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); + int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); + int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); + +#define dct_long_mul(out, inq, coeff) \ + int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) + +#define dct_long_mac(out, acc, inq, coeff) \ + int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) + +#define dct_widen(out, inq) \ + int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ + int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) + +// wide add +#define dct_wadd(out, a, b) \ + int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vaddq_s32(a##_h, b##_h) + +// wide sub +#define dct_wsub(out, a, b) \ + int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vsubq_s32(a##_h, b##_h) + +// butterfly a/b, then shift using "shiftop" by "s" and pack +#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ + { \ + dct_wadd(sum, a, b); \ + dct_wsub(dif, a, b); \ + out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ + out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ + } + +#define dct_pass(shiftop, shift) \ + { \ + /* even part */ \ + int16x8_t sum26 = vaddq_s16(row2, row6); \ + dct_long_mul(p1e, sum26, rot0_0); \ + dct_long_mac(t2e, p1e, row6, rot0_1); \ + dct_long_mac(t3e, p1e, row2, rot0_2); \ + int16x8_t sum04 = vaddq_s16(row0, row4); \ + int16x8_t dif04 = vsubq_s16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + int16x8_t sum15 = vaddq_s16(row1, row5); \ + int16x8_t sum17 = vaddq_s16(row1, row7); \ + int16x8_t sum35 = vaddq_s16(row3, row5); \ + int16x8_t sum37 = vaddq_s16(row3, row7); \ + int16x8_t sumodd = vaddq_s16(sum17, sum35); \ + dct_long_mul(p5o, sumodd, rot1_0); \ + dct_long_mac(p1o, p5o, sum17, rot1_1); \ + dct_long_mac(p2o, p5o, sum35, rot1_2); \ + dct_long_mul(p3o, sum37, rot2_0); \ + dct_long_mul(p4o, sum15, rot2_1); \ + dct_wadd(sump13o, p1o, p3o); \ + dct_wadd(sump24o, p2o, p4o); \ + dct_wadd(sump23o, p2o, p3o); \ + dct_wadd(sump14o, p1o, p4o); \ + dct_long_mac(x4, sump13o, row7, rot3_0); \ + dct_long_mac(x5, sump24o, row5, rot3_1); \ + dct_long_mac(x6, sump23o, row3, rot3_2); \ + dct_long_mac(x7, sump14o, row1, rot3_3); \ + dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ + dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ + dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ + dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ + } + + // load + row0 = vld1q_s16(data + 0*8); + row1 = vld1q_s16(data + 1*8); + row2 = vld1q_s16(data + 2*8); + row3 = vld1q_s16(data + 3*8); + row4 = vld1q_s16(data + 4*8); + row5 = vld1q_s16(data + 5*8); + row6 = vld1q_s16(data + 6*8); + row7 = vld1q_s16(data + 7*8); + + // add DC bias + row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); + + // column pass + dct_pass(vrshrn_n_s32, 10); + + // 16bit 8x8 transpose + { +// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. +// whether compilers actually get this is another story, sadly. +#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } +#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } + + // pass 1 + dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 + dct_trn16(row2, row3); + dct_trn16(row4, row5); + dct_trn16(row6, row7); + + // pass 2 + dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 + dct_trn32(row1, row3); + dct_trn32(row4, row6); + dct_trn32(row5, row7); + + // pass 3 + dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 + dct_trn64(row1, row5); + dct_trn64(row2, row6); + dct_trn64(row3, row7); + +#undef dct_trn16 +#undef dct_trn32 +#undef dct_trn64 + } + + // row pass + // vrshrn_n_s32 only supports shifts up to 16, we need + // 17. so do a non-rounding shift of 16 first then follow + // up with a rounding shift by 1. + dct_pass(vshrn_n_s32, 16); + + { + // pack and round + uint8x8_t p0 = vqrshrun_n_s16(row0, 1); + uint8x8_t p1 = vqrshrun_n_s16(row1, 1); + uint8x8_t p2 = vqrshrun_n_s16(row2, 1); + uint8x8_t p3 = vqrshrun_n_s16(row3, 1); + uint8x8_t p4 = vqrshrun_n_s16(row4, 1); + uint8x8_t p5 = vqrshrun_n_s16(row5, 1); + uint8x8_t p6 = vqrshrun_n_s16(row6, 1); + uint8x8_t p7 = vqrshrun_n_s16(row7, 1); + + // again, these can translate into one instruction, but often don't. +#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } +#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } + + // sadly can't use interleaved stores here since we only write + // 8 bytes to each scan line! + + // 8x8 8-bit transpose pass 1 + dct_trn8_8(p0, p1); + dct_trn8_8(p2, p3); + dct_trn8_8(p4, p5); + dct_trn8_8(p6, p7); + + // pass 2 + dct_trn8_16(p0, p2); + dct_trn8_16(p1, p3); + dct_trn8_16(p4, p6); + dct_trn8_16(p5, p7); + + // pass 3 + dct_trn8_32(p0, p4); + dct_trn8_32(p1, p5); + dct_trn8_32(p2, p6); + dct_trn8_32(p3, p7); + + // store + vst1_u8(out, p0); out += out_stride; + vst1_u8(out, p1); out += out_stride; + vst1_u8(out, p2); out += out_stride; + vst1_u8(out, p3); out += out_stride; + vst1_u8(out, p4); out += out_stride; + vst1_u8(out, p5); out += out_stride; + vst1_u8(out, p6); out += out_stride; + vst1_u8(out, p7); + +#undef dct_trn8_8 +#undef dct_trn8_16 +#undef dct_trn8_32 + } + +#undef dct_long_mul +#undef dct_long_mac +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_pass +} + +#endif // STBI_NEON + +#define STBI__MARKER_none 0xff +// if there's a pending marker from the entropy stream, return that +// otherwise, fetch from the stream and get a marker. if there's no +// marker, return 0xff, which is never a valid marker value +static stbi_uc stbi__get_marker(stbi__jpeg *j) +{ + stbi_uc x; + if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } + x = stbi__get8(j->s); + if (x != 0xff) return STBI__MARKER_none; + while (x == 0xff) + x = stbi__get8(j->s); // consume repeated 0xff fill bytes + return x; +} + +// in each scan, we'll have scan_n components, and the order +// of the components is specified by order[] +#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) + +// after a restart interval, stbi__jpeg_reset the entropy decoder and +// the dc prediction +static void stbi__jpeg_reset(stbi__jpeg *j) +{ + j->code_bits = 0; + j->code_buffer = 0; + j->nomore = 0; + j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = j->img_comp[3].dc_pred = 0; + j->marker = STBI__MARKER_none; + j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; + j->eob_run = 0; + // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, + // since we don't even allow 1<<30 pixels +} + +static int stbi__parse_entropy_coded_data(stbi__jpeg *z) +{ + stbi__jpeg_reset(z); + if (!z->progressive) { + if (z->scan_n == 1) { + int i,j; + STBI_SIMD_ALIGN(short, data[64]); + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + STBI_SIMD_ALIGN(short, data[64]); + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x)*8; + int y2 = (j*z->img_comp[n].v + y)*8; + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } else { + if (z->scan_n == 1) { + int i,j; + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + if (z->spec_start == 0) { + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } else { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) + return 0; + } + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x); + int y2 = (j*z->img_comp[n].v + y); + short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } +} + +static void stbi__jpeg_dequantize(short *data, stbi__uint16 *dequant) +{ + int i; + for (i=0; i < 64; ++i) + data[i] *= dequant[i]; +} + +static void stbi__jpeg_finish(stbi__jpeg *z) +{ + if (z->progressive) { + // dequantize and idct the data + int i,j,n; + for (n=0; n < z->s->img_n; ++n) { + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + } + } + } + } +} + +static int stbi__process_marker(stbi__jpeg *z, int m) +{ + int L; + switch (m) { + case STBI__MARKER_none: // no marker found + return stbi__err("expected marker","Corrupt JPEG"); + + case 0xDD: // DRI - specify restart interval + if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); + z->restart_interval = stbi__get16be(z->s); + return 1; + + case 0xDB: // DQT - define quantization table + L = stbi__get16be(z->s)-2; + while (L > 0) { + int q = stbi__get8(z->s); + int p = q >> 4, sixteen = (p != 0); + int t = q & 15,i; + if (p != 0 && p != 1) return stbi__err("bad DQT type","Corrupt JPEG"); + if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); + + for (i=0; i < 64; ++i) + z->dequant[t][stbi__jpeg_dezigzag[i]] = (stbi__uint16)(sixteen ? stbi__get16be(z->s) : stbi__get8(z->s)); + L -= (sixteen ? 129 : 65); + } + return L==0; + + case 0xC4: // DHT - define huffman table + L = stbi__get16be(z->s)-2; + while (L > 0) { + stbi_uc *v; + int sizes[16],i,n=0; + int q = stbi__get8(z->s); + int tc = q >> 4; + int th = q & 15; + if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); + for (i=0; i < 16; ++i) { + sizes[i] = stbi__get8(z->s); + n += sizes[i]; + } + L -= 17; + if (tc == 0) { + if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; + v = z->huff_dc[th].values; + } else { + if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; + v = z->huff_ac[th].values; + } + for (i=0; i < n; ++i) + v[i] = stbi__get8(z->s); + if (tc != 0) + stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); + L -= n; + } + return L==0; + } + + // check for comment block or APP blocks + if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { + L = stbi__get16be(z->s); + if (L < 2) { + if (m == 0xFE) + return stbi__err("bad COM len","Corrupt JPEG"); + else + return stbi__err("bad APP len","Corrupt JPEG"); + } + L -= 2; + + if (m == 0xE0 && L >= 5) { // JFIF APP0 segment + static const unsigned char tag[5] = {'J','F','I','F','\0'}; + int ok = 1; + int i; + for (i=0; i < 5; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 5; + if (ok) + z->jfif = 1; + } else if (m == 0xEE && L >= 12) { // Adobe APP14 segment + static const unsigned char tag[6] = {'A','d','o','b','e','\0'}; + int ok = 1; + int i; + for (i=0; i < 6; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 6; + if (ok) { + stbi__get8(z->s); // version + stbi__get16be(z->s); // flags0 + stbi__get16be(z->s); // flags1 + z->app14_color_transform = stbi__get8(z->s); // color transform + L -= 6; + } + } + + stbi__skip(z->s, L); + return 1; + } + + return stbi__err("unknown marker","Corrupt JPEG"); +} + +// after we see SOS +static int stbi__process_scan_header(stbi__jpeg *z) +{ + int i; + int Ls = stbi__get16be(z->s); + z->scan_n = stbi__get8(z->s); + if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); + if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); + for (i=0; i < z->scan_n; ++i) { + int id = stbi__get8(z->s), which; + int q = stbi__get8(z->s); + for (which = 0; which < z->s->img_n; ++which) + if (z->img_comp[which].id == id) + break; + if (which == z->s->img_n) return 0; // no match + z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); + z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); + z->order[i] = which; + } + + { + int aa; + z->spec_start = stbi__get8(z->s); + z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 + aa = stbi__get8(z->s); + z->succ_high = (aa >> 4); + z->succ_low = (aa & 15); + if (z->progressive) { + if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) + return stbi__err("bad SOS", "Corrupt JPEG"); + } else { + if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); + if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); + z->spec_end = 63; + } + } + + return 1; +} + +static int stbi__free_jpeg_components(stbi__jpeg *z, int ncomp, int why) +{ + int i; + for (i=0; i < ncomp; ++i) { + if (z->img_comp[i].raw_data) { + STBI_FREE(z->img_comp[i].raw_data); + z->img_comp[i].raw_data = NULL; + z->img_comp[i].data = NULL; + } + if (z->img_comp[i].raw_coeff) { + STBI_FREE(z->img_comp[i].raw_coeff); + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].coeff = 0; + } + if (z->img_comp[i].linebuf) { + STBI_FREE(z->img_comp[i].linebuf); + z->img_comp[i].linebuf = NULL; + } + } + return why; +} + +static int stbi__process_frame_header(stbi__jpeg *z, int scan) +{ + stbi__context *s = z->s; + int Lf,p,i,q, h_max=1,v_max=1,c; + Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG + p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline + s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG + s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + c = stbi__get8(s); + if (c != 3 && c != 1 && c != 4) return stbi__err("bad component count","Corrupt JPEG"); + s->img_n = c; + for (i=0; i < c; ++i) { + z->img_comp[i].data = NULL; + z->img_comp[i].linebuf = NULL; + } + + if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); + + z->rgb = 0; + for (i=0; i < s->img_n; ++i) { + static const unsigned char rgb[3] = { 'R', 'G', 'B' }; + z->img_comp[i].id = stbi__get8(s); + if (s->img_n == 3 && z->img_comp[i].id == rgb[i]) + ++z->rgb; + q = stbi__get8(s); + z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); + z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); + z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); + } + + if (scan != STBI__SCAN_load) return 1; + + if (!stbi__mad3sizes_valid(s->img_x, s->img_y, s->img_n, 0)) return stbi__err("too large", "Image too large to decode"); + + for (i=0; i < s->img_n; ++i) { + if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; + if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; + } + + // compute interleaved mcu info + z->img_h_max = h_max; + z->img_v_max = v_max; + z->img_mcu_w = h_max * 8; + z->img_mcu_h = v_max * 8; + // these sizes can't be more than 17 bits + z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; + z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; + + for (i=0; i < s->img_n; ++i) { + // number of effective pixels (e.g. for non-interleaved MCU) + z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; + z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; + // to simplify generation, we'll allocate enough memory to decode + // the bogus oversized data from using interleaved MCUs and their + // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't + // discard the extra data until colorspace conversion + // + // img_mcu_x, img_mcu_y: <=17 bits; comp[i].h and .v are <=4 (checked earlier) + // so these muls can't overflow with 32-bit ints (which we require) + z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; + z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; + z->img_comp[i].coeff = 0; + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].linebuf = NULL; + z->img_comp[i].raw_data = stbi__malloc_mad2(z->img_comp[i].w2, z->img_comp[i].h2, 15); + if (z->img_comp[i].raw_data == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + // align blocks for idct using mmx/sse + z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); + if (z->progressive) { + // w2, h2 are multiples of 8 (see above) + z->img_comp[i].coeff_w = z->img_comp[i].w2 / 8; + z->img_comp[i].coeff_h = z->img_comp[i].h2 / 8; + z->img_comp[i].raw_coeff = stbi__malloc_mad3(z->img_comp[i].w2, z->img_comp[i].h2, sizeof(short), 15); + if (z->img_comp[i].raw_coeff == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); + } + } + + return 1; +} + +// use comparisons since in some cases we handle more than one case (e.g. SOF) +#define stbi__DNL(x) ((x) == 0xdc) +#define stbi__SOI(x) ((x) == 0xd8) +#define stbi__EOI(x) ((x) == 0xd9) +#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) +#define stbi__SOS(x) ((x) == 0xda) + +#define stbi__SOF_progressive(x) ((x) == 0xc2) + +static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) +{ + int m; + z->jfif = 0; + z->app14_color_transform = -1; // valid values are 0,1,2 + z->marker = STBI__MARKER_none; // initialize cached marker to empty + m = stbi__get_marker(z); + if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); + if (scan == STBI__SCAN_type) return 1; + m = stbi__get_marker(z); + while (!stbi__SOF(m)) { + if (!stbi__process_marker(z,m)) return 0; + m = stbi__get_marker(z); + while (m == STBI__MARKER_none) { + // some files have extra padding after their blocks, so ok, we'll scan + if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); + m = stbi__get_marker(z); + } + } + z->progressive = stbi__SOF_progressive(m); + if (!stbi__process_frame_header(z, scan)) return 0; + return 1; +} + +// decode image to YCbCr format +static int stbi__decode_jpeg_image(stbi__jpeg *j) +{ + int m; + for (m = 0; m < 4; m++) { + j->img_comp[m].raw_data = NULL; + j->img_comp[m].raw_coeff = NULL; + } + j->restart_interval = 0; + if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; + m = stbi__get_marker(j); + while (!stbi__EOI(m)) { + if (stbi__SOS(m)) { + if (!stbi__process_scan_header(j)) return 0; + if (!stbi__parse_entropy_coded_data(j)) return 0; + if (j->marker == STBI__MARKER_none ) { + // handle 0s at the end of image data from IP Kamera 9060 + while (!stbi__at_eof(j->s)) { + int x = stbi__get8(j->s); + if (x == 255) { + j->marker = stbi__get8(j->s); + break; + } + } + // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 + } + } else if (stbi__DNL(m)) { + int Ld = stbi__get16be(j->s); + stbi__uint32 NL = stbi__get16be(j->s); + if (Ld != 4) return stbi__err("bad DNL len", "Corrupt JPEG"); + if (NL != j->s->img_y) return stbi__err("bad DNL height", "Corrupt JPEG"); + } else { + if (!stbi__process_marker(j, m)) return 0; + } + m = stbi__get_marker(j); + } + if (j->progressive) + stbi__jpeg_finish(j); + return 1; +} + +// static jfif-centered resampling (across block boundaries) + +typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, + int w, int hs); + +#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) + +static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + STBI_NOTUSED(out); + STBI_NOTUSED(in_far); + STBI_NOTUSED(w); + STBI_NOTUSED(hs); + return in_near; +} + +static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples vertically for every one in input + int i; + STBI_NOTUSED(hs); + for (i=0; i < w; ++i) + out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); + return out; +} + +static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples horizontally for every one in input + int i; + stbi_uc *input = in_near; + + if (w == 1) { + // if only one sample, can't do any interpolation + out[0] = out[1] = input[0]; + return out; + } + + out[0] = input[0]; + out[1] = stbi__div4(input[0]*3 + input[1] + 2); + for (i=1; i < w-1; ++i) { + int n = 3*input[i]+2; + out[i*2+0] = stbi__div4(n+input[i-1]); + out[i*2+1] = stbi__div4(n+input[i+1]); + } + out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); + out[i*2+1] = input[w-1]; + + STBI_NOTUSED(in_far); + STBI_NOTUSED(hs); + + return out; +} + +#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) + +static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i,t0,t1; + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + out[0] = stbi__div4(t1+2); + for (i=1; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i=0,t0,t1; + + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + // process groups of 8 pixels for as long as we can. + // note we can't handle the last pixel in a row in this loop + // because we need to handle the filter boundary conditions. + for (; i < ((w-1) & ~7); i += 8) { +#if defined(STBI_SSE2) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + __m128i zero = _mm_setzero_si128(); + __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); + __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); + __m128i farw = _mm_unpacklo_epi8(farb, zero); + __m128i nearw = _mm_unpacklo_epi8(nearb, zero); + __m128i diff = _mm_sub_epi16(farw, nearw); + __m128i nears = _mm_slli_epi16(nearw, 2); + __m128i curr = _mm_add_epi16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + __m128i prv0 = _mm_slli_si128(curr, 2); + __m128i nxt0 = _mm_srli_si128(curr, 2); + __m128i prev = _mm_insert_epi16(prv0, t1, 0); + __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + __m128i bias = _mm_set1_epi16(8); + __m128i curs = _mm_slli_epi16(curr, 2); + __m128i prvd = _mm_sub_epi16(prev, curr); + __m128i nxtd = _mm_sub_epi16(next, curr); + __m128i curb = _mm_add_epi16(curs, bias); + __m128i even = _mm_add_epi16(prvd, curb); + __m128i odd = _mm_add_epi16(nxtd, curb); + + // interleave even and odd pixels, then undo scaling. + __m128i int0 = _mm_unpacklo_epi16(even, odd); + __m128i int1 = _mm_unpackhi_epi16(even, odd); + __m128i de0 = _mm_srli_epi16(int0, 4); + __m128i de1 = _mm_srli_epi16(int1, 4); + + // pack and write output + __m128i outv = _mm_packus_epi16(de0, de1); + _mm_storeu_si128((__m128i *) (out + i*2), outv); +#elif defined(STBI_NEON) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + uint8x8_t farb = vld1_u8(in_far + i); + uint8x8_t nearb = vld1_u8(in_near + i); + int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); + int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); + int16x8_t curr = vaddq_s16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + int16x8_t prv0 = vextq_s16(curr, curr, 7); + int16x8_t nxt0 = vextq_s16(curr, curr, 1); + int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); + int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + int16x8_t curs = vshlq_n_s16(curr, 2); + int16x8_t prvd = vsubq_s16(prev, curr); + int16x8_t nxtd = vsubq_s16(next, curr); + int16x8_t even = vaddq_s16(curs, prvd); + int16x8_t odd = vaddq_s16(curs, nxtd); + + // undo scaling and round, then store with even/odd phases interleaved + uint8x8x2_t o; + o.val[0] = vqrshrun_n_s16(even, 4); + o.val[1] = vqrshrun_n_s16(odd, 4); + vst2_u8(out + i*2, o); +#endif + + // "previous" value for next iter + t1 = 3*in_near[i+7] + in_far[i+7]; + } + + t0 = t1; + t1 = 3*in_near[i] + in_far[i]; + out[i*2] = stbi__div16(3*t1 + t0 + 8); + + for (++i; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} +#endif + +static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // resample with nearest-neighbor + int i,j; + STBI_NOTUSED(in_far); + for (i=0; i < w; ++i) + for (j=0; j < hs; ++j) + out[i*hs+j] = in_near[i]; + return out; +} + +// this is a reduced-precision calculation of YCbCr-to-RGB introduced +// to make sure the code produces the same results in both SIMD and scalar +#define stbi__float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + (cr*-stbi__float2fixed(0.71414f)) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) +{ + int i = 0; + +#ifdef STBI_SSE2 + // step == 3 is pretty ugly on the final interleave, and i'm not convinced + // it's useful in practice (you wouldn't use it for textures, for example). + // so just accelerate step == 4 case. + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + __m128i signflip = _mm_set1_epi8(-0x80); + __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); + __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); + __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); + __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); + __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); + __m128i xw = _mm_set1_epi16(255); // alpha channel + + for (; i+7 < count; i += 8) { + // load + __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); + __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); + __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); + __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 + __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 + + // unpack to short (and left-shift cr, cb by 8) + __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); + __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); + __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); + + // color transform + __m128i yws = _mm_srli_epi16(yw, 4); + __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); + __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); + __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); + __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); + __m128i rws = _mm_add_epi16(cr0, yws); + __m128i gwt = _mm_add_epi16(cb0, yws); + __m128i bws = _mm_add_epi16(yws, cb1); + __m128i gws = _mm_add_epi16(gwt, cr1); + + // descale + __m128i rw = _mm_srai_epi16(rws, 4); + __m128i bw = _mm_srai_epi16(bws, 4); + __m128i gw = _mm_srai_epi16(gws, 4); + + // back to byte, set up for transpose + __m128i brb = _mm_packus_epi16(rw, bw); + __m128i gxb = _mm_packus_epi16(gw, xw); + + // transpose to interleave channels + __m128i t0 = _mm_unpacklo_epi8(brb, gxb); + __m128i t1 = _mm_unpackhi_epi8(brb, gxb); + __m128i o0 = _mm_unpacklo_epi16(t0, t1); + __m128i o1 = _mm_unpackhi_epi16(t0, t1); + + // store + _mm_storeu_si128((__m128i *) (out + 0), o0); + _mm_storeu_si128((__m128i *) (out + 16), o1); + out += 32; + } + } +#endif + +#ifdef STBI_NEON + // in this version, step=3 support would be easy to add. but is there demand? + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + uint8x8_t signflip = vdup_n_u8(0x80); + int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); + int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); + int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); + int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); + + for (; i+7 < count; i += 8) { + // load + uint8x8_t y_bytes = vld1_u8(y + i); + uint8x8_t cr_bytes = vld1_u8(pcr + i); + uint8x8_t cb_bytes = vld1_u8(pcb + i); + int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); + int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); + + // expand to s16 + int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); + int16x8_t crw = vshll_n_s8(cr_biased, 7); + int16x8_t cbw = vshll_n_s8(cb_biased, 7); + + // color transform + int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); + int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); + int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); + int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); + int16x8_t rws = vaddq_s16(yws, cr0); + int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); + int16x8_t bws = vaddq_s16(yws, cb1); + + // undo scaling, round, convert to byte + uint8x8x4_t o; + o.val[0] = vqrshrun_n_s16(rws, 4); + o.val[1] = vqrshrun_n_s16(gws, 4); + o.val[2] = vqrshrun_n_s16(bws, 4); + o.val[3] = vdup_n_u8(255); + + // store, interleaving r/g/b/a + vst4_u8(out, o); + out += 8*4; + } + } +#endif + + for (; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + cr*-stbi__float2fixed(0.71414f) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#endif + +// set up the kernels +static void stbi__setup_jpeg(stbi__jpeg *j) +{ + j->idct_block_kernel = stbi__idct_block; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; + +#ifdef STBI_SSE2 + if (stbi__sse2_available()) { + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; + } +#endif + +#ifdef STBI_NEON + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; +#endif +} + +// clean up the temporary component buffers +static void stbi__cleanup_jpeg(stbi__jpeg *j) +{ + stbi__free_jpeg_components(j, j->s->img_n, 0); +} + +typedef struct +{ + resample_row_func resample; + stbi_uc *line0,*line1; + int hs,vs; // expansion factor in each axis + int w_lores; // horizontal pixels pre-expansion + int ystep; // how far through vertical expansion we are + int ypos; // which pre-expansion row we're on +} stbi__resample; + +// fast 0..255 * 0..255 => 0..255 rounded multiplication +static stbi_uc stbi__blinn_8x8(stbi_uc x, stbi_uc y) +{ + unsigned int t = x*y + 128; + return (stbi_uc) ((t + (t >>8)) >> 8); +} + +static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) +{ + int n, decode_n, is_rgb; + z->s->img_n = 0; // make stbi__cleanup_jpeg safe + + // validate req_comp + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + + // load a jpeg image from whichever source, but leave in YCbCr format + if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } + + // determine actual number of components to generate + n = req_comp ? req_comp : z->s->img_n >= 3 ? 3 : 1; + + is_rgb = z->s->img_n == 3 && (z->rgb == 3 || (z->app14_color_transform == 0 && !z->jfif)); + + if (z->s->img_n == 3 && n < 3 && !is_rgb) + decode_n = 1; + else + decode_n = z->s->img_n; + + // resample and color-convert + { + int k; + unsigned int i,j; + stbi_uc *output; + stbi_uc *coutput[4] = { NULL, NULL, NULL, NULL }; + + stbi__resample res_comp[4]; + + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + + // allocate line buffer big enough for upsampling off the edges + // with upsample factor of 4 + z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); + if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + r->hs = z->img_h_max / z->img_comp[k].h; + r->vs = z->img_v_max / z->img_comp[k].v; + r->ystep = r->vs >> 1; + r->w_lores = (z->s->img_x + r->hs-1) / r->hs; + r->ypos = 0; + r->line0 = r->line1 = z->img_comp[k].data; + + if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; + else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; + else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; + else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; + else r->resample = stbi__resample_row_generic; + } + + // can't error after this so, this is safe + output = (stbi_uc *) stbi__malloc_mad3(n, z->s->img_x, z->s->img_y, 1); + if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + // now go ahead and resample + for (j=0; j < z->s->img_y; ++j) { + stbi_uc *out = output + n * z->s->img_x * j; + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + int y_bot = r->ystep >= (r->vs >> 1); + coutput[k] = r->resample(z->img_comp[k].linebuf, + y_bot ? r->line1 : r->line0, + y_bot ? r->line0 : r->line1, + r->w_lores, r->hs); + if (++r->ystep >= r->vs) { + r->ystep = 0; + r->line0 = r->line1; + if (++r->ypos < z->img_comp[k].y) + r->line1 += z->img_comp[k].w2; + } + } + if (n >= 3) { + stbi_uc *y = coutput[0]; + if (z->s->img_n == 3) { + if (is_rgb) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = y[i]; + out[1] = coutput[1][i]; + out[2] = coutput[2][i]; + out[3] = 255; + out += n; + } + } else { + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else if (z->s->img_n == 4) { + if (z->app14_color_transform == 0) { // CMYK + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(coutput[0][i], m); + out[1] = stbi__blinn_8x8(coutput[1][i], m); + out[2] = stbi__blinn_8x8(coutput[2][i], m); + out[3] = 255; + out += n; + } + } else if (z->app14_color_transform == 2) { // YCCK + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(255 - out[0], m); + out[1] = stbi__blinn_8x8(255 - out[1], m); + out[2] = stbi__blinn_8x8(255 - out[2], m); + out += n; + } + } else { // YCbCr + alpha? Ignore the fourth channel for now + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else + for (i=0; i < z->s->img_x; ++i) { + out[0] = out[1] = out[2] = y[i]; + out[3] = 255; // not used if n==3 + out += n; + } + } else { + if (is_rgb) { + if (n == 1) + for (i=0; i < z->s->img_x; ++i) + *out++ = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + else { + for (i=0; i < z->s->img_x; ++i, out += 2) { + out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + out[1] = 255; + } + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 0) { + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + stbi_uc r = stbi__blinn_8x8(coutput[0][i], m); + stbi_uc g = stbi__blinn_8x8(coutput[1][i], m); + stbi_uc b = stbi__blinn_8x8(coutput[2][i], m); + out[0] = stbi__compute_y(r, g, b); + out[1] = 255; + out += n; + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 2) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = stbi__blinn_8x8(255 - coutput[0][i], coutput[3][i]); + out[1] = 255; + out += n; + } + } else { + stbi_uc *y = coutput[0]; + if (n == 1) + for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; + else + for (i=0; i < z->s->img_x; ++i) { *out++ = y[i]; *out++ = 255; } + } + } + } + stbi__cleanup_jpeg(z); + *out_x = z->s->img_x; + *out_y = z->s->img_y; + if (comp) *comp = z->s->img_n >= 3 ? 3 : 1; // report original components, not output + return output; + } +} + +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + unsigned char* result; + stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); + STBI_NOTUSED(ri); + j->s = s; + stbi__setup_jpeg(j); + result = load_jpeg_image(j, x,y,comp,req_comp); + STBI_FREE(j); + return result; +} + +static int stbi__jpeg_test(stbi__context *s) +{ + int r; + stbi__jpeg* j = (stbi__jpeg*)stbi__malloc(sizeof(stbi__jpeg)); + j->s = s; + stbi__setup_jpeg(j); + r = stbi__decode_jpeg_header(j, STBI__SCAN_type); + stbi__rewind(s); + STBI_FREE(j); + return r; +} + +static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) +{ + if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { + stbi__rewind( j->s ); + return 0; + } + if (x) *x = j->s->img_x; + if (y) *y = j->s->img_y; + if (comp) *comp = j->s->img_n >= 3 ? 3 : 1; + return 1; +} + +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) +{ + int result; + stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); + j->s = s; + result = stbi__jpeg_info_raw(j, x, y, comp); + STBI_FREE(j); + return result; +} +#endif + +// public domain zlib decode v0.2 Sean Barrett 2006-11-18 +// simple implementation +// - all input must be provided in an upfront buffer +// - all output is written to a single output buffer (can malloc/realloc) +// performance +// - fast huffman + +#ifndef STBI_NO_ZLIB + +// fast-way is faster to check than jpeg huffman, but slow way is slower +#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) + +// zlib-style huffman encoding +// (jpegs packs from left, zlib from right, so can't share code) +typedef struct +{ + stbi__uint16 fast[1 << STBI__ZFAST_BITS]; + stbi__uint16 firstcode[16]; + int maxcode[17]; + stbi__uint16 firstsymbol[16]; + stbi_uc size[288]; + stbi__uint16 value[288]; +} stbi__zhuffman; + +stbi_inline static int stbi__bitreverse16(int n) +{ + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +stbi_inline static int stbi__bit_reverse(int v, int bits) +{ + STBI_ASSERT(bits <= 16); + // to bit reverse n bits, reverse 16 and shift + // e.g. 11 bits, bit reverse and shift away 5 + return stbi__bitreverse16(v) >> (16-bits); +} + +static int stbi__zbuild_huffman(stbi__zhuffman *z, const stbi_uc *sizelist, int num) +{ + int i,k=0; + int code, next_code[16], sizes[17]; + + // DEFLATE spec for generating codes + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 0, sizeof(z->fast)); + for (i=0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i=1; i < 16; ++i) + if (sizes[i] > (1 << i)) + return stbi__err("bad sizes", "Corrupt PNG"); + code = 0; + for (i=1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (stbi__uint16) code; + z->firstsymbol[i] = (stbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); + z->maxcode[i] = code << (16-i); // preshift for inner loop + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; // sentinel + for (i=0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); + z->size [c] = (stbi_uc ) s; + z->value[c] = (stbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int j = stbi__bit_reverse(next_code[s],s); + while (j < (1 << STBI__ZFAST_BITS)) { + z->fast[j] = fastv; + j += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +// zlib-from-memory implementation for PNG reading +// because PNG allows splitting the zlib stream arbitrarily, +// and it's annoying structurally to have PNG call ZLIB call PNG, +// we require PNG read all the IDATs and combine them into a single +// memory buffer + +typedef struct +{ + stbi_uc *zbuffer, *zbuffer_end; + int num_bits; + stbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + stbi__zhuffman z_length, z_distance; +} stbi__zbuf; + +stbi_inline static int stbi__zeof(stbi__zbuf *z) +{ + return (z->zbuffer >= z->zbuffer_end); +} + +stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) +{ + return stbi__zeof(z) ? 0 : *z->zbuffer++; +} + +static void stbi__fill_bits(stbi__zbuf *z) +{ + do { + if (z->code_buffer >= (1U << z->num_bits)) { + z->zbuffer = z->zbuffer_end; /* treat this as EOF so we fail. */ + return; + } + z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) +{ + unsigned int k; + if (z->num_bits < n) stbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s,k; + // not resolved by fast table, so compute it the slow way + // use jpeg approach, which requires MSbits at top + k = stbi__bit_reverse(a->code_buffer, 16); + for (s=STBI__ZFAST_BITS+1; ; ++s) + if (k < z->maxcode[s]) + break; + if (s >= 16) return -1; // invalid code! + // code size is s, so: + b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; + if (b >= sizeof (z->size)) return -1; // some data was corrupt somewhere! + if (z->size[b] != s) return -1; // was originally an assert, but report failure instead. + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s; + if (a->num_bits < 16) { + if (stbi__zeof(a)) { + return -1; /* report error for unexpected end of data. */ + } + stbi__fill_bits(a); + } + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b) { + s = b >> 9; + a->code_buffer >>= s; + a->num_bits -= s; + return b & 511; + } + return stbi__zhuffman_decode_slowpath(a, z); +} + +static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes +{ + char *q; + unsigned int cur, limit, old_limit; + z->zout = zout; + if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); + cur = (unsigned int) (z->zout - z->zout_start); + limit = old_limit = (unsigned) (z->zout_end - z->zout_start); + if (UINT_MAX - cur < (unsigned) n) return stbi__err("outofmem", "Out of memory"); + while (cur + n > limit) { + if(limit > UINT_MAX / 2) return stbi__err("outofmem", "Out of memory"); + limit *= 2; + } + q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); + STBI_NOTUSED(old_limit); + if (q == NULL) return stbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static const int stbi__zlength_base[31] = { + 3,4,5,6,7,8,9,10,11,13, + 15,17,19,23,27,31,35,43,51,59, + 67,83,99,115,131,163,195,227,258,0,0 }; + +static const int stbi__zlength_extra[31]= +{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; + +static const int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, +257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; + +static const int stbi__zdist_extra[32] = +{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +static int stbi__parse_huffman_block(stbi__zbuf *a) +{ + char *zout = a->zout; + for(;;) { + int z = stbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes + if (zout >= a->zout_end) { + if (!stbi__zexpand(a, zout, 1)) return 0; + zout = a->zout; + } + *zout++ = (char) z; + } else { + stbi_uc *p; + int len,dist; + if (z == 256) { + a->zout = zout; + return 1; + } + z -= 257; + len = stbi__zlength_base[z]; + if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); + z = stbi__zhuffman_decode(a, &a->z_distance); + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); + dist = stbi__zdist_base[z]; + if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); + if (zout + len > a->zout_end) { + if (!stbi__zexpand(a, zout, len)) return 0; + zout = a->zout; + } + p = (stbi_uc *) (zout - dist); + if (dist == 1) { // run of one byte; common in images. + stbi_uc v = *p; + if (len) { do *zout++ = v; while (--len); } + } else { + if (len) { do *zout++ = *p++; while (--len); } + } + } + } +} + +static int stbi__compute_huffman_codes(stbi__zbuf *a) +{ + static const stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + stbi__zhuffman z_codelength; + stbi_uc lencodes[286+32+137];//padding for maximum single op + stbi_uc codelength_sizes[19]; + int i,n; + + int hlit = stbi__zreceive(a,5) + 257; + int hdist = stbi__zreceive(a,5) + 1; + int hclen = stbi__zreceive(a,4) + 4; + int ntot = hlit + hdist; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i=0; i < hclen; ++i) { + int s = stbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + } + if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < ntot) { + int c = stbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); + if (c < 16) + lencodes[n++] = (stbi_uc) c; + else { + stbi_uc fill = 0; + if (c == 16) { + c = stbi__zreceive(a,2)+3; + if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); + fill = lencodes[n-1]; + } else if (c == 17) { + c = stbi__zreceive(a,3)+3; + } else if (c == 18) { + c = stbi__zreceive(a,7)+11; + } else { + return stbi__err("bad codelengths", "Corrupt PNG"); + } + if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); + memset(lencodes+n, fill, c); + n += c; + } + } + if (n != ntot) return stbi__err("bad codelengths","Corrupt PNG"); + if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + return 1; +} + +static int stbi__parse_uncompressed_block(stbi__zbuf *a) +{ + stbi_uc header[4]; + int len,nlen,k; + if (a->num_bits & 7) + stbi__zreceive(a, a->num_bits & 7); // discard + // drain the bit-packed data into header + k = 0; + while (a->num_bits > 0) { + header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check + a->code_buffer >>= 8; + a->num_bits -= 8; + } + if (a->num_bits < 0) return stbi__err("zlib corrupt","Corrupt PNG"); + // now fill header the normal way + while (k < 4) + header[k++] = stbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!stbi__zexpand(a, a->zout, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int stbi__parse_zlib_header(stbi__zbuf *a) +{ + int cmf = stbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = stbi__zget8(a); + if (stbi__zeof(a)) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png + if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png + // window = 1 << (8 + cinfo)... but who cares, we fully buffer output + return 1; +} + +static const stbi_uc stbi__zdefault_length[288] = +{ + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8 +}; +static const stbi_uc stbi__zdefault_distance[32] = +{ + 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5 +}; +/* +Init algorithm: +{ + int i; // use <= to match clearly with spec + for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + + for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; +} +*/ + +static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) +{ + int final, type; + if (parse_header) + if (!stbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + do { + final = stbi__zreceive(a,1); + type = stbi__zreceive(a,2); + if (type == 0) { + if (!stbi__parse_uncompressed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + // use fixed code lengths + if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + } else { + if (!stbi__compute_huffman_codes(a)) return 0; + } + if (!stbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +{ + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + + return stbi__parse_zlib(a, parse_header); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) +{ + return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(16384); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer+len; + if (stbi__do_zlib(&a, p, 16384, 1, 0)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) + return (int) (a.zout - a.zout_start); + else + return -1; +} +#endif + +// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 +// simple implementation +// - only 8-bit samples +// - no CRC checking +// - allocates lots of intermediate memory +// - avoids problem of streaming data between subsystems +// - avoids explicit window management +// performance +// - uses stb_zlib, a PD zlib implementation with fast huffman decoding + +#ifndef STBI_NO_PNG +typedef struct +{ + stbi__uint32 length; + stbi__uint32 type; +} stbi__pngchunk; + +static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) +{ + stbi__pngchunk c; + c.length = stbi__get32be(s); + c.type = stbi__get32be(s); + return c; +} + +static int stbi__check_png_header(stbi__context *s) +{ + static const stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; + int i; + for (i=0; i < 8; ++i) + if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); + return 1; +} + +typedef struct +{ + stbi__context *s; + stbi_uc *idata, *expanded, *out; + int depth; +} stbi__png; + + +enum { + STBI__F_none=0, + STBI__F_sub=1, + STBI__F_up=2, + STBI__F_avg=3, + STBI__F_paeth=4, + // synthetic filters used for first scanline to avoid needing a dummy row of 0s + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static stbi_uc first_row_filter[5] = +{ + STBI__F_none, + STBI__F_sub, + STBI__F_none, + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static int stbi__paeth(int a, int b, int c) +{ + int p = a + b - c; + int pa = abs(p-a); + int pb = abs(p-b); + int pc = abs(p-c); + if (pa <= pb && pa <= pc) return a; + if (pb <= pc) return b; + return c; +} + +static const stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; + +// create the png data from post-deflated data +static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) +{ + int bytes = (depth == 16? 2 : 1); + stbi__context *s = a->s; + stbi__uint32 i,j,stride = x*out_n*bytes; + stbi__uint32 img_len, img_width_bytes; + int k; + int img_n = s->img_n; // copy it into a local for later + + int output_bytes = out_n*bytes; + int filter_bytes = img_n*bytes; + int width = x; + + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); + a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); // extra bytes to write off the end into + if (!a->out) return stbi__err("outofmem", "Out of memory"); + + if (!stbi__mad3sizes_valid(img_n, x, depth, 7)) return stbi__err("too large", "Corrupt PNG"); + img_width_bytes = (((img_n * x * depth) + 7) >> 3); + img_len = (img_width_bytes + 1) * y; + + // we used to check for exact match between raw_len and img_len on non-interlaced PNGs, + // but issue #276 reported a PNG in the wild that had extra data at the end (all zeros), + // so just check for raw_len < img_len always. + if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); + + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *prior; + int filter = *raw++; + + if (filter > 4) + return stbi__err("invalid filter","Corrupt PNG"); + + if (depth < 8) { + if (img_width_bytes > x) return stbi__err("invalid width","Corrupt PNG"); + cur += x*out_n - img_width_bytes; // store output to the rightmost img_len bytes, so we can decode in place + filter_bytes = 1; + width = img_width_bytes; + } + prior = cur - stride; // bugfix: need to compute this after 'cur +=' computation above + + // if first row, use special filter that doesn't sample previous row + if (j == 0) filter = first_row_filter[filter]; + + // handle first byte explicitly + for (k=0; k < filter_bytes; ++k) { + switch (filter) { + case STBI__F_none : cur[k] = raw[k]; break; + case STBI__F_sub : cur[k] = raw[k]; break; + case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; + case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; + case STBI__F_avg_first : cur[k] = raw[k]; break; + case STBI__F_paeth_first: cur[k] = raw[k]; break; + } + } + + if (depth == 8) { + if (img_n != out_n) + cur[img_n] = 255; // first pixel + raw += img_n; + cur += out_n; + prior += out_n; + } else if (depth == 16) { + if (img_n != out_n) { + cur[filter_bytes] = 255; // first pixel top byte + cur[filter_bytes+1] = 255; // first pixel bottom byte + } + raw += filter_bytes; + cur += output_bytes; + prior += output_bytes; + } else { + raw += 1; + cur += 1; + prior += 1; + } + + // this is a little gross, so that we don't switch per-pixel or per-component + if (depth < 8 || img_n == out_n) { + int nk = (width - 1)*filter_bytes; + #define STBI__CASE(f) \ + case f: \ + for (k=0; k < nk; ++k) + switch (filter) { + // "none" filter turns into a memcpy here; make that explicit. + case STBI__F_none: memcpy(cur, raw, nk); break; + STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break; + STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; + STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; + STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); } break; + } + #undef STBI__CASE + raw += nk; + } else { + STBI_ASSERT(img_n+1 == out_n); + #define STBI__CASE(f) \ + case f: \ + for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \ + for (k=0; k < filter_bytes; ++k) + switch (filter) { + STBI__CASE(STBI__F_none) { cur[k] = raw[k]; } break; + STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break; + STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; + STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; + STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],0,0)); } break; + } + #undef STBI__CASE + + // the loop above sets the high byte of the pixels' alpha, but for + // 16 bit png files we also need the low byte set. we'll do that here. + if (depth == 16) { + cur = a->out + stride*j; // start at the beginning of the row again + for (i=0; i < x; ++i,cur+=output_bytes) { + cur[filter_bytes+1] = 255; + } + } + } + } + + // we make a separate pass to expand bits to pixels; for performance, + // this could run two scanlines behind the above code, so it won't + // intefere with filtering but will still be in the cache. + if (depth < 8) { + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; + // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit + // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop + stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range + + // note that the final byte might overshoot and write more data than desired. + // we can allocate enough data that this never writes out of memory, but it + // could also overwrite the next scanline. can it overwrite non-empty data + // on the next scanline? yes, consider 1-pixel-wide scanlines with 1-bit-per-pixel. + // so we need to explicitly clamp the final ones + + if (depth == 4) { + for (k=x*img_n; k >= 2; k-=2, ++in) { + *cur++ = scale * ((*in >> 4) ); + *cur++ = scale * ((*in ) & 0x0f); + } + if (k > 0) *cur++ = scale * ((*in >> 4) ); + } else if (depth == 2) { + for (k=x*img_n; k >= 4; k-=4, ++in) { + *cur++ = scale * ((*in >> 6) ); + *cur++ = scale * ((*in >> 4) & 0x03); + *cur++ = scale * ((*in >> 2) & 0x03); + *cur++ = scale * ((*in ) & 0x03); + } + if (k > 0) *cur++ = scale * ((*in >> 6) ); + if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); + if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); + } else if (depth == 1) { + for (k=x*img_n; k >= 8; k-=8, ++in) { + *cur++ = scale * ((*in >> 7) ); + *cur++ = scale * ((*in >> 6) & 0x01); + *cur++ = scale * ((*in >> 5) & 0x01); + *cur++ = scale * ((*in >> 4) & 0x01); + *cur++ = scale * ((*in >> 3) & 0x01); + *cur++ = scale * ((*in >> 2) & 0x01); + *cur++ = scale * ((*in >> 1) & 0x01); + *cur++ = scale * ((*in ) & 0x01); + } + if (k > 0) *cur++ = scale * ((*in >> 7) ); + if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); + if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); + if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); + if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); + if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); + if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); + } + if (img_n != out_n) { + int q; + // insert alpha = 255 + cur = a->out + stride*j; + if (img_n == 1) { + for (q=x-1; q >= 0; --q) { + cur[q*2+1] = 255; + cur[q*2+0] = cur[q]; + } + } else { + STBI_ASSERT(img_n == 3); + for (q=x-1; q >= 0; --q) { + cur[q*4+3] = 255; + cur[q*4+2] = cur[q*3+2]; + cur[q*4+1] = cur[q*3+1]; + cur[q*4+0] = cur[q*3+0]; + } + } + } + } + } else if (depth == 16) { + // force the image data from big-endian to platform-native. + // this is done in a separate pass due to the decoding relying + // on the data being untouched, but could probably be done + // per-line during decode if care is taken. + stbi_uc *cur = a->out; + stbi__uint16 *cur16 = (stbi__uint16*)cur; + + for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { + *cur16 = (cur[0] << 8) | cur[1]; + } + } + + return 1; +} + +static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) +{ + int bytes = (depth == 16 ? 2 : 1); + int out_bytes = out_n * bytes; + stbi_uc *final; + int p; + if (!interlaced) + return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + + // de-interlacing + final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); + for (p=0; p < 7; ++p) { + int xorig[] = { 0,4,0,2,0,1,0 }; + int yorig[] = { 0,0,4,0,2,0,1 }; + int xspc[] = { 8,8,4,4,2,2,1 }; + int yspc[] = { 8,8,8,4,4,2,2 }; + int i,j,x,y; + // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 + x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; + if (x && y) { + stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + STBI_FREE(final); + return 0; + } + for (j=0; j < y; ++j) { + for (i=0; i < x; ++i) { + int out_y = j*yspc[p]+yorig[p]; + int out_x = i*xspc[p]+xorig[p]; + memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes, + a->out + (j*x+i)*out_bytes, out_bytes); + } + } + STBI_FREE(a->out); + image_data += img_len; + image_data_len -= img_len; + } + } + a->out = final; + + return 1; +} + +static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + // compute color-based transparency, assuming we've + // already got 255 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i=0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i=0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi__uint16 *p = (stbi__uint16*) z->out; + + // compute color-based transparency, assuming we've + // already got 65535 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 65535); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) +{ + stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + stbi_uc *p, *temp_out, *orig = a->out; + + p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + // between here and free(out) below, exitting would leak + temp_out = p; + + if (pal_img_n == 3) { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p += 3; + } + } else { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p[3] = palette[n+3]; + p += 4; + } + } + STBI_FREE(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +static int stbi__unpremultiply_on_load = 0; +static int stbi__de_iphone_flag = 0; + +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag = flag_true_if_should_convert; +} + +static void stbi__de_iphone(stbi__png *z) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + if (s->img_out_n == 3) { // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 3; + } + } else { + STBI_ASSERT(s->img_out_n == 4); + if (stbi__unpremultiply_on_load) { + // convert bgr to rgb and unpremultiply + for (i=0; i < pixel_count; ++i) { + stbi_uc a = p[3]; + stbi_uc t = p[0]; + if (a) { + stbi_uc half = a / 2; + p[0] = (p[2] * 255 + half) / a; + p[1] = (p[1] * 255 + half) / a; + p[2] = ( t * 255 + half) / a; + } else { + p[0] = p[2]; + p[2] = t; + } + p += 4; + } + } else { + // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 4; + } + } + } +} + +#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) + +static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) +{ + stbi_uc palette[1024], pal_img_n=0; + stbi_uc has_trans=0, tc[3]={0}; + stbi__uint16 tc16[3]; + stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, color=0, is_iphone=0; + stbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!stbi__check_png_header(s)) return 0; + + if (scan == STBI__SCAN_type) return 1; + + for (;;) { + stbi__pngchunk c = stbi__get_chunk_header(s); + switch (c.type) { + case STBI__PNG_TYPE('C','g','B','I'): + is_iphone = 1; + stbi__skip(s, c.length); + break; + case STBI__PNG_TYPE('I','H','D','R'): { + int comp,filter; + if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); + first = 0; + if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = stbi__get32be(s); + s->img_y = stbi__get32be(s); + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); + color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); + comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); + filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); + interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + if (scan == STBI__SCAN_header) return 1; + } else { + // if paletted, then pal_n is our final components, and + // img_n is # components to decompress/filter. + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); + // if SCAN_header, have to scan to see if we have a tRNS + } + break; + } + + case STBI__PNG_TYPE('P','L','T','E'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); + for (i=0; i < pal_len; ++i) { + palette[i*4+0] = stbi__get8(s); + palette[i*4+1] = stbi__get8(s); + palette[i*4+2] = stbi__get8(s); + palette[i*4+3] = 255; + } + break; + } + + case STBI__PNG_TYPE('t','R','N','S'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); + if (pal_img_n) { + if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } + if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); + pal_img_n = 4; + for (i=0; i < c.length; ++i) + palette[i*4+3] = stbi__get8(s); + } else { + if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); + has_trans = 1; + if (z->depth == 16) { + for (k = 0; k < s->img_n; ++k) tc16[k] = (stbi__uint16)stbi__get16be(s); // copy the values as-is + } else { + for (k = 0; k < s->img_n; ++k) tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger + } + } + break; + } + + case STBI__PNG_TYPE('I','D','A','T'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); + if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } + if ((int)(ioff + c.length) < (int)ioff) return 0; + if (ioff + c.length > idata_limit) { + stbi__uint32 idata_limit_old = idata_limit; + stbi_uc *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + STBI_NOTUSED(idata_limit_old); + p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); + ioff += c.length; + break; + } + + case STBI__PNG_TYPE('I','E','N','D'): { + stbi__uint32 raw_len, bpl; + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (scan != STBI__SCAN_load) return 1; + if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); + // initial guess for decoded data size to avoid unnecessary reallocs + bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component + raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; + z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); + if (z->expanded == NULL) return 0; // zlib should set error + STBI_FREE(z->idata); z->idata = NULL; + if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n+1; + else + s->img_out_n = s->img_n; + if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; + if (has_trans) { + if (z->depth == 16) { + if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + } else { + if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + } + } + if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) + stbi__de_iphone(z); + if (pal_img_n) { + // pal_img_n == 3 or 4 + s->img_n = pal_img_n; // record the actual colors we had + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } else if (has_trans) { + // non-paletted image with tRNS -> source image has (constant) alpha + ++s->img_n; + } + STBI_FREE(z->expanded); z->expanded = NULL; + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + return 1; + } + + default: + // if critical, fail + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { + #ifndef STBI_NO_FAILURE_STRINGS + // not threadsafe + static char invalid_chunk[] = "XXXX PNG chunk not known"; + invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); + invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); + invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); + invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); + #endif + return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); + } + stbi__skip(s, c.length); + break; + } + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + } +} + +static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) +{ + void *result=NULL; + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth <= 8) + ri->bits_per_channel = 8; + else if (p->depth == 16) + ri->bits_per_channel = 16; + else + return stbi__errpuc("bad bits_per_channel", "PNG not supported: unsupported color depth"); + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + if (ri->bits_per_channel == 8) + result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + else + result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + p->s->img_out_n = req_comp; + if (result == NULL) return result; + } + *x = p->s->img_x; + *y = p->s->img_y; + if (n) *n = p->s->img_n; + } + STBI_FREE(p->out); p->out = NULL; + STBI_FREE(p->expanded); p->expanded = NULL; + STBI_FREE(p->idata); p->idata = NULL; + + return result; +} + +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi__png p; + p.s = s; + return stbi__do_png(&p, x,y,comp,req_comp, ri); +} + +static int stbi__png_test(stbi__context *s) +{ + int r; + r = stbi__check_png_header(s); + stbi__rewind(s); + return r; +} + +static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) +{ + if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { + stbi__rewind( p->s ); + return 0; + } + if (x) *x = p->s->img_x; + if (y) *y = p->s->img_y; + if (comp) *comp = p->s->img_n; + return 1; +} + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__png p; + p.s = s; + return stbi__png_info_raw(&p, x, y, comp); +} + +static int stbi__png_is16(stbi__context *s) +{ + stbi__png p; + p.s = s; + if (!stbi__png_info_raw(&p, NULL, NULL, NULL)) + return 0; + if (p.depth != 16) { + stbi__rewind(p.s); + return 0; + } + return 1; +} +#endif + +// Microsoft/Windows BMP image + +#ifndef STBI_NO_BMP +static int stbi__bmp_test_raw(stbi__context *s) +{ + int r; + int sz; + if (stbi__get8(s) != 'B') return 0; + if (stbi__get8(s) != 'M') return 0; + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + stbi__get32le(s); // discard data offset + sz = stbi__get32le(s); + r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); + return r; +} + +static int stbi__bmp_test(stbi__context *s) +{ + int r = stbi__bmp_test_raw(s); + stbi__rewind(s); + return r; +} + + +// returns 0..31 for the highest set bit +static int stbi__high_bit(unsigned int z) +{ + int n=0; + if (z == 0) return -1; + if (z >= 0x10000) { n += 16; z >>= 16; } + if (z >= 0x00100) { n += 8; z >>= 8; } + if (z >= 0x00010) { n += 4; z >>= 4; } + if (z >= 0x00004) { n += 2; z >>= 2; } + if (z >= 0x00002) { n += 1;/* >>= 1;*/ } + return n; +} + +static int stbi__bitcount(unsigned int a) +{ + a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 + a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 + a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits + a = (a + (a >> 8)); // max 16 per 8 bits + a = (a + (a >> 16)); // max 32 per 8 bits + return a & 0xff; +} + +// extract an arbitrarily-aligned N-bit value (N=bits) +// from v, and then make it 8-bits long and fractionally +// extend it to full full range. +static int stbi__shiftsigned(unsigned int v, int shift, int bits) +{ + static unsigned int mul_table[9] = { + 0, + 0xff/*0b11111111*/, 0x55/*0b01010101*/, 0x49/*0b01001001*/, 0x11/*0b00010001*/, + 0x21/*0b00100001*/, 0x41/*0b01000001*/, 0x81/*0b10000001*/, 0x01/*0b00000001*/, + }; + static unsigned int shift_table[9] = { + 0, 0,0,1,0,2,4,6,0, + }; + if (shift < 0) + v <<= -shift; + else + v >>= shift; + STBI_ASSERT(v < 256); + v >>= (8-bits); + STBI_ASSERT(bits >= 0 && bits <= 8); + return (int) ((unsigned) v * mul_table[bits]) >> shift_table[bits]; +} + +typedef struct +{ + int bpp, offset, hsz; + unsigned int mr,mg,mb,ma, all_a; + int extra_read; +} stbi__bmp_data; + +static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) +{ + int hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + info->offset = stbi__get32le(s); + info->hsz = hsz = stbi__get32le(s); + info->mr = info->mg = info->mb = info->ma = 0; + info->extra_read = 14; + + if (info->offset < 0) return stbi__errpuc("bad BMP", "bad BMP"); + + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); + if (hsz == 12) { + s->img_x = stbi__get16le(s); + s->img_y = stbi__get16le(s); + } else { + s->img_x = stbi__get32le(s); + s->img_y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); + info->bpp = stbi__get16le(s); + if (hsz != 12) { + int compress = stbi__get32le(s); + if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); + stbi__get32le(s); // discard sizeof + stbi__get32le(s); // discard hres + stbi__get32le(s); // discard vres + stbi__get32le(s); // discard colorsused + stbi__get32le(s); // discard max important + if (hsz == 40 || hsz == 56) { + if (hsz == 56) { + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + } + if (info->bpp == 16 || info->bpp == 32) { + if (compress == 0) { + if (info->bpp == 32) { + info->mr = 0xffu << 16; + info->mg = 0xffu << 8; + info->mb = 0xffu << 0; + info->ma = 0xffu << 24; + info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 + } else { + info->mr = 31u << 10; + info->mg = 31u << 5; + info->mb = 31u << 0; + } + } else if (compress == 3) { + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->extra_read += 12; + // not documented, but generated by photoshop and handled by mspaint + if (info->mr == info->mg && info->mg == info->mb) { + // ?!?!? + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else { + int i; + if (hsz != 108 && hsz != 124) + return stbi__errpuc("bad BMP", "bad BMP"); + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->ma = stbi__get32le(s); + stbi__get32le(s); // discard color space + for (i=0; i < 12; ++i) + stbi__get32le(s); // discard color space parameters + if (hsz == 124) { + stbi__get32le(s); // discard rendering intent + stbi__get32le(s); // discard offset of profile data + stbi__get32le(s); // discard size of profile data + stbi__get32le(s); // discard reserved + } + } + } + return (void *) 1; +} + + +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + unsigned int mr=0,mg=0,mb=0,ma=0, all_a; + stbi_uc pal[256][4]; + int psize=0,i,j,width; + int flip_vertically, pad, target; + stbi__bmp_data info; + STBI_NOTUSED(ri); + + info.all_a = 255; + if (stbi__bmp_parse_header(s, &info) == NULL) + return NULL; // error code already set + + flip_vertically = ((int) s->img_y) > 0; + s->img_y = abs((int) s->img_y); + + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + mr = info.mr; + mg = info.mg; + mb = info.mb; + ma = info.ma; + all_a = info.all_a; + + if (info.hsz == 12) { + if (info.bpp < 24) + psize = (info.offset - info.extra_read - 24) / 3; + } else { + if (info.bpp < 16) + psize = (info.offset - info.extra_read - info.hsz) >> 2; + } + if (psize == 0) { + STBI_ASSERT(info.offset == s->callback_already_read + (int) (s->img_buffer - s->img_buffer_original)); + if (info.offset != s->callback_already_read + (s->img_buffer - s->buffer_start)) { + return stbi__errpuc("bad offset", "Corrupt BMP"); + } + } + + if (info.bpp == 24 && ma == 0xff000000) + s->img_n = 3; + else + s->img_n = ma ? 4 : 3; + if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 + target = req_comp; + else + target = s->img_n; // if they want monochrome, we'll post-convert + + // sanity-check size + if (!stbi__mad3sizes_valid(target, s->img_x, s->img_y, 0)) + return stbi__errpuc("too large", "Corrupt BMP"); + + out = (stbi_uc *) stbi__malloc_mad3(target, s->img_x, s->img_y, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (info.bpp < 16) { + int z=0; + if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } + for (i=0; i < psize; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + if (info.hsz != 12) stbi__get8(s); + pal[i][3] = 255; + } + stbi__skip(s, info.offset - info.extra_read - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); + if (info.bpp == 1) width = (s->img_x + 7) >> 3; + else if (info.bpp == 4) width = (s->img_x + 1) >> 1; + else if (info.bpp == 8) width = s->img_x; + else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } + pad = (-width)&3; + if (info.bpp == 1) { + for (j=0; j < (int) s->img_y; ++j) { + int bit_offset = 7, v = stbi__get8(s); + for (i=0; i < (int) s->img_x; ++i) { + int color = (v>>bit_offset)&0x1; + out[z++] = pal[color][0]; + out[z++] = pal[color][1]; + out[z++] = pal[color][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + if((--bit_offset) < 0) { + bit_offset = 7; + v = stbi__get8(s); + } + } + stbi__skip(s, pad); + } + } else { + for (j=0; j < (int) s->img_y; ++j) { + for (i=0; i < (int) s->img_x; i += 2) { + int v=stbi__get8(s),v2=0; + if (info.bpp == 4) { + v2 = v & 15; + v >>= 4; + } + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + v = (info.bpp == 8) ? stbi__get8(s) : v2; + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + } + stbi__skip(s, pad); + } + } + } else { + int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; + int z = 0; + int easy=0; + stbi__skip(s, info.offset - info.extra_read - info.hsz); + if (info.bpp == 24) width = 3 * s->img_x; + else if (info.bpp == 16) width = 2*s->img_x; + else /* bpp = 32 and pad = 0 */ width=0; + pad = (-width) & 3; + if (info.bpp == 24) { + easy = 1; + } else if (info.bpp == 32) { + if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) + easy = 2; + } + if (!easy) { + if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + // right shift amt to put high bit in position #7 + rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); + gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); + bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); + ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); + if (rcount > 8 || gcount > 8 || bcount > 8 || acount > 8) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + } + for (j=0; j < (int) s->img_y; ++j) { + if (easy) { + for (i=0; i < (int) s->img_x; ++i) { + unsigned char a; + out[z+2] = stbi__get8(s); + out[z+1] = stbi__get8(s); + out[z+0] = stbi__get8(s); + z += 3; + a = (easy == 2 ? stbi__get8(s) : 255); + all_a |= a; + if (target == 4) out[z++] = a; + } + } else { + int bpp = info.bpp; + for (i=0; i < (int) s->img_x; ++i) { + stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); + unsigned int a; + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); + a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); + all_a |= a; + if (target == 4) out[z++] = STBI__BYTECAST(a); + } + } + stbi__skip(s, pad); + } + } + + // if alpha channel is all 0s, replace with all 255s + if (target == 4 && all_a == 0) + for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) + out[i] = 255; + + if (flip_vertically) { + stbi_uc t; + for (j=0; j < (int) s->img_y>>1; ++j) { + stbi_uc *p1 = out + j *s->img_x*target; + stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; + for (i=0; i < (int) s->img_x*target; ++i) { + t = p1[i]; p1[i] = p2[i]; p2[i] = t; + } + } + } + + if (req_comp && req_comp != target) { + out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + return out; +} +#endif + +// Targa Truevision - TGA +// by Jonathan Dummer +#ifndef STBI_NO_TGA +// returns STBI_rgb or whatever, 0 on error +static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) +{ + // only RGB or RGBA (incl. 16bit) or grey allowed + if (is_rgb16) *is_rgb16 = 0; + switch(bits_per_pixel) { + case 8: return STBI_grey; + case 16: if(is_grey) return STBI_grey_alpha; + // fallthrough + case 15: if(is_rgb16) *is_rgb16 = 1; + return STBI_rgb; + case 24: // fallthrough + case 32: return bits_per_pixel/8; + default: return 0; + } +} + +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) +{ + int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; + int sz, tga_colormap_type; + stbi__get8(s); // discard Offset + tga_colormap_type = stbi__get8(s); // colormap type + if( tga_colormap_type > 1 ) { + stbi__rewind(s); + return 0; // only RGB or indexed allowed + } + tga_image_type = stbi__get8(s); // image type + if ( tga_colormap_type == 1 ) { // colormapped (paletted) image + if (tga_image_type != 1 && tga_image_type != 9) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip image x and y origin + tga_colormap_bpp = sz; + } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE + if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { + stbi__rewind(s); + return 0; // only RGB or grey allowed, +/- RLE + } + stbi__skip(s,9); // skip colormap specification and image x/y origin + tga_colormap_bpp = 0; + } + tga_w = stbi__get16le(s); + if( tga_w < 1 ) { + stbi__rewind(s); + return 0; // test width + } + tga_h = stbi__get16le(s); + if( tga_h < 1 ) { + stbi__rewind(s); + return 0; // test height + } + tga_bits_per_pixel = stbi__get8(s); // bits per pixel + stbi__get8(s); // ignore alpha bits + if (tga_colormap_bpp != 0) { + if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { + // when using a colormap, tga_bits_per_pixel is the size of the indexes + // I don't think anything but 8 or 16bit indexes makes sense + stbi__rewind(s); + return 0; + } + tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); + } else { + tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); + } + if(!tga_comp) { + stbi__rewind(s); + return 0; + } + if (x) *x = tga_w; + if (y) *y = tga_h; + if (comp) *comp = tga_comp; + return 1; // seems to have passed everything +} + +static int stbi__tga_test(stbi__context *s) +{ + int res = 0; + int sz, tga_color_type; + stbi__get8(s); // discard Offset + tga_color_type = stbi__get8(s); // color type + if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed + sz = stbi__get8(s); // image type + if ( tga_color_type == 1 ) { // colormapped (paletted) image + if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + stbi__skip(s,4); // skip image x and y origin + } else { // "normal" image w/o colormap + if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE + stbi__skip(s,9); // skip colormap specification and image x/y origin + } + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height + sz = stbi__get8(s); // bits per pixel + if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + + res = 1; // if we got this far, everything's good and we can return 1 instead of 0 + +errorEnd: + stbi__rewind(s); + return res; +} + +// read 16bit value and convert to 24bit RGB +static void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) +{ + stbi__uint16 px = (stbi__uint16)stbi__get16le(s); + stbi__uint16 fiveBitMask = 31; + // we have 3 channels with 5bits each + int r = (px >> 10) & fiveBitMask; + int g = (px >> 5) & fiveBitMask; + int b = px & fiveBitMask; + // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later + out[0] = (stbi_uc)((r * 255)/31); + out[1] = (stbi_uc)((g * 255)/31); + out[2] = (stbi_uc)((b * 255)/31); + + // some people claim that the most significant bit might be used for alpha + // (possibly if an alpha-bit is set in the "image descriptor byte") + // but that only made 16bit test images completely translucent.. + // so let's treat all 15 and 16bit TGAs as RGB with no alpha. +} + +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + // read in the TGA header stuff + int tga_offset = stbi__get8(s); + int tga_indexed = stbi__get8(s); + int tga_image_type = stbi__get8(s); + int tga_is_RLE = 0; + int tga_palette_start = stbi__get16le(s); + int tga_palette_len = stbi__get16le(s); + int tga_palette_bits = stbi__get8(s); + int tga_x_origin = stbi__get16le(s); + int tga_y_origin = stbi__get16le(s); + int tga_width = stbi__get16le(s); + int tga_height = stbi__get16le(s); + int tga_bits_per_pixel = stbi__get8(s); + int tga_comp, tga_rgb16=0; + int tga_inverted = stbi__get8(s); + // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) + // image data + unsigned char *tga_data; + unsigned char *tga_palette = NULL; + int i, j; + unsigned char raw_data[4] = {0}; + int RLE_count = 0; + int RLE_repeating = 0; + int read_next_pixel = 1; + STBI_NOTUSED(ri); + STBI_NOTUSED(tga_x_origin); // @TODO + STBI_NOTUSED(tga_y_origin); // @TODO + + if (tga_height > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (tga_width > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + // do a tiny bit of precessing + if ( tga_image_type >= 8 ) + { + tga_image_type -= 8; + tga_is_RLE = 1; + } + tga_inverted = 1 - ((tga_inverted >> 5) & 1); + + // If I'm paletted, then I'll use the number of bits from the palette + if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); + else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); + + if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency + return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); + + // tga info + *x = tga_width; + *y = tga_height; + if (comp) *comp = tga_comp; + + if (!stbi__mad3sizes_valid(tga_width, tga_height, tga_comp, 0)) + return stbi__errpuc("too large", "Corrupt TGA"); + + tga_data = (unsigned char*)stbi__malloc_mad3(tga_width, tga_height, tga_comp, 0); + if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); + + // skip to the data's starting position (offset usually = 0) + stbi__skip(s, tga_offset ); + + if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { + for (i=0; i < tga_height; ++i) { + int row = tga_inverted ? tga_height -i - 1 : i; + stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; + stbi__getn(s, tga_row, tga_width * tga_comp); + } + } else { + // do I need to load a palette? + if ( tga_indexed) + { + if (tga_palette_len == 0) { /* you have to have at least one entry! */ + STBI_FREE(tga_data); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + + // any data to skip? (offset usually = 0) + stbi__skip(s, tga_palette_start ); + // load the palette + tga_palette = (unsigned char*)stbi__malloc_mad2(tga_palette_len, tga_comp, 0); + if (!tga_palette) { + STBI_FREE(tga_data); + return stbi__errpuc("outofmem", "Out of memory"); + } + if (tga_rgb16) { + stbi_uc *pal_entry = tga_palette; + STBI_ASSERT(tga_comp == STBI_rgb); + for (i=0; i < tga_palette_len; ++i) { + stbi__tga_read_rgb16(s, pal_entry); + pal_entry += tga_comp; + } + } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { + STBI_FREE(tga_data); + STBI_FREE(tga_palette); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + } + // load the data + for (i=0; i < tga_width * tga_height; ++i) + { + // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? + if ( tga_is_RLE ) + { + if ( RLE_count == 0 ) + { + // yep, get the next byte as a RLE command + int RLE_cmd = stbi__get8(s); + RLE_count = 1 + (RLE_cmd & 127); + RLE_repeating = RLE_cmd >> 7; + read_next_pixel = 1; + } else if ( !RLE_repeating ) + { + read_next_pixel = 1; + } + } else + { + read_next_pixel = 1; + } + // OK, if I need to read a pixel, do it now + if ( read_next_pixel ) + { + // load however much data we did have + if ( tga_indexed ) + { + // read in index, then perform the lookup + int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); + if ( pal_idx >= tga_palette_len ) { + // invalid index + pal_idx = 0; + } + pal_idx *= tga_comp; + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = tga_palette[pal_idx+j]; + } + } else if(tga_rgb16) { + STBI_ASSERT(tga_comp == STBI_rgb); + stbi__tga_read_rgb16(s, raw_data); + } else { + // read in the data raw + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = stbi__get8(s); + } + } + // clear the reading flag for the next pixel + read_next_pixel = 0; + } // end of reading a pixel + + // copy data + for (j = 0; j < tga_comp; ++j) + tga_data[i*tga_comp+j] = raw_data[j]; + + // in case we're in RLE mode, keep counting down + --RLE_count; + } + // do I need to invert the image? + if ( tga_inverted ) + { + for (j = 0; j*2 < tga_height; ++j) + { + int index1 = j * tga_width * tga_comp; + int index2 = (tga_height - 1 - j) * tga_width * tga_comp; + for (i = tga_width * tga_comp; i > 0; --i) + { + unsigned char temp = tga_data[index1]; + tga_data[index1] = tga_data[index2]; + tga_data[index2] = temp; + ++index1; + ++index2; + } + } + } + // clear my palette, if I had one + if ( tga_palette != NULL ) + { + STBI_FREE( tga_palette ); + } + } + + // swap RGB - if the source data was RGB16, it already is in the right order + if (tga_comp >= 3 && !tga_rgb16) + { + unsigned char* tga_pixel = tga_data; + for (i=0; i < tga_width * tga_height; ++i) + { + unsigned char temp = tga_pixel[0]; + tga_pixel[0] = tga_pixel[2]; + tga_pixel[2] = temp; + tga_pixel += tga_comp; + } + } + + // convert to target component count + if (req_comp && req_comp != tga_comp) + tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); + + // the things I do to get rid of an error message, and yet keep + // Microsoft's C compilers happy... [8^( + tga_palette_start = tga_palette_len = tga_palette_bits = + tga_x_origin = tga_y_origin = 0; + STBI_NOTUSED(tga_palette_start); + // OK, done + return tga_data; +} +#endif + +// ************************************************************************************************* +// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s) +{ + int r = (stbi__get32be(s) == 0x38425053); + stbi__rewind(s); + return r; +} + +static int stbi__psd_decode_rle(stbi__context *s, stbi_uc *p, int pixelCount) +{ + int count, nleft, len; + + count = 0; + while ((nleft = pixelCount - count) > 0) { + len = stbi__get8(s); + if (len == 128) { + // No-op. + } else if (len < 128) { + // Copy next len+1 bytes literally. + len++; + if (len > nleft) return 0; // corrupt data + count += len; + while (len) { + *p = stbi__get8(s); + p += 4; + len--; + } + } else if (len > 128) { + stbi_uc val; + // Next -len+1 bytes in the dest are replicated from next source byte. + // (Interpret len as a negative 8-bit int.) + len = 257 - len; + if (len > nleft) return 0; // corrupt data + val = stbi__get8(s); + count += len; + while (len) { + *p = val; + p += 4; + len--; + } + } + } + + return 1; +} + +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + int pixelCount; + int channelCount, compression; + int channel, i; + int bitdepth; + int w,h; + stbi_uc *out; + STBI_NOTUSED(ri); + + // Check identifier + if (stbi__get32be(s) != 0x38425053) // "8BPS" + return stbi__errpuc("not PSD", "Corrupt PSD image"); + + // Check file type version. + if (stbi__get16be(s) != 1) + return stbi__errpuc("wrong version", "Unsupported version of PSD image"); + + // Skip 6 reserved bytes. + stbi__skip(s, 6 ); + + // Read the number of channels (R, G, B, A, etc). + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) + return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); + + // Read the rows and columns of the image. + h = stbi__get32be(s); + w = stbi__get32be(s); + + if (h > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (w > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + // Make sure the depth is 8 bits. + bitdepth = stbi__get16be(s); + if (bitdepth != 8 && bitdepth != 16) + return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); + + // Make sure the color mode is RGB. + // Valid options are: + // 0: Bitmap + // 1: Grayscale + // 2: Indexed color + // 3: RGB color + // 4: CMYK color + // 7: Multichannel + // 8: Duotone + // 9: Lab color + if (stbi__get16be(s) != 3) + return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); + + // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) + stbi__skip(s,stbi__get32be(s) ); + + // Skip the image resources. (resolution, pen tool paths, etc) + stbi__skip(s, stbi__get32be(s) ); + + // Skip the reserved data. + stbi__skip(s, stbi__get32be(s) ); + + // Find out if the data is compressed. + // Known values: + // 0: no compression + // 1: RLE compressed + compression = stbi__get16be(s); + if (compression > 1) + return stbi__errpuc("bad compression", "PSD has an unknown compression format"); + + // Check size + if (!stbi__mad3sizes_valid(4, w, h, 0)) + return stbi__errpuc("too large", "Corrupt PSD"); + + // Create the destination image. + + if (!compression && bitdepth == 16 && bpc == 16) { + out = (stbi_uc *) stbi__malloc_mad3(8, w, h, 0); + ri->bits_per_channel = 16; + } else + out = (stbi_uc *) stbi__malloc(4 * w*h); + + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + pixelCount = w*h; + + // Initialize the data to zero. + //memset( out, 0, pixelCount * 4 ); + + // Finally, the image data. + if (compression) { + // RLE as used by .PSD and .TIFF + // Loop until you get the number of unpacked bytes you are expecting: + // Read the next source byte into n. + // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. + // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. + // Else if n is 128, noop. + // Endloop + + // The RLE-compressed data is preceded by a 2-byte data count for each row in the data, + // which we're going to just skip. + stbi__skip(s, h * channelCount * 2 ); + + // Read the RLE data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out+channel; + if (channel >= channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++, p += 4) + *p = (channel == 3 ? 255 : 0); + } else { + // Read the RLE data. + if (!stbi__psd_decode_rle(s, p, pixelCount)) { + STBI_FREE(out); + return stbi__errpuc("corrupt", "bad RLE data"); + } + } + } + + } else { + // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) + // where each channel consists of an 8-bit (or 16-bit) value for each pixel in the image. + + // Read the data by channel. + for (channel = 0; channel < 4; channel++) { + if (channel >= channelCount) { + // Fill this channel with default data. + if (bitdepth == 16 && bpc == 16) { + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + stbi__uint16 val = channel == 3 ? 65535 : 0; + for (i = 0; i < pixelCount; i++, q += 4) + *q = val; + } else { + stbi_uc *p = out+channel; + stbi_uc val = channel == 3 ? 255 : 0; + for (i = 0; i < pixelCount; i++, p += 4) + *p = val; + } + } else { + if (ri->bits_per_channel == 16) { // output bpc + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + for (i = 0; i < pixelCount; i++, q += 4) + *q = (stbi__uint16) stbi__get16be(s); + } else { + stbi_uc *p = out+channel; + if (bitdepth == 16) { // input bpc + for (i = 0; i < pixelCount; i++, p += 4) + *p = (stbi_uc) (stbi__get16be(s) >> 8); + } else { + for (i = 0; i < pixelCount; i++, p += 4) + *p = stbi__get8(s); + } + } + } + } + } + + // remove weird white matte from PSD + if (channelCount >= 4) { + if (ri->bits_per_channel == 16) { + for (i=0; i < w*h; ++i) { + stbi__uint16 *pixel = (stbi__uint16 *) out + 4*i; + if (pixel[3] != 0 && pixel[3] != 65535) { + float a = pixel[3] / 65535.0f; + float ra = 1.0f / a; + float inv_a = 65535.0f * (1 - ra); + pixel[0] = (stbi__uint16) (pixel[0]*ra + inv_a); + pixel[1] = (stbi__uint16) (pixel[1]*ra + inv_a); + pixel[2] = (stbi__uint16) (pixel[2]*ra + inv_a); + } + } + } else { + for (i=0; i < w*h; ++i) { + unsigned char *pixel = out + 4*i; + if (pixel[3] != 0 && pixel[3] != 255) { + float a = pixel[3] / 255.0f; + float ra = 1.0f / a; + float inv_a = 255.0f * (1 - ra); + pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); + pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); + pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); + } + } + } + } + + // convert to desired output format + if (req_comp && req_comp != 4) { + if (ri->bits_per_channel == 16) + out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, 4, req_comp, w, h); + else + out = stbi__convert_format(out, 4, req_comp, w, h); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + if (comp) *comp = 4; + *y = h; + *x = w; + + return out; +} +#endif + +// ************************************************************************************************* +// Softimage PIC loader +// by Tom Seddon +// +// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format +// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ + +#ifndef STBI_NO_PIC +static int stbi__pic_is4(stbi__context *s,const char *str) +{ + int i; + for (i=0; i<4; ++i) + if (stbi__get8(s) != (stbi_uc)str[i]) + return 0; + + return 1; +} + +static int stbi__pic_test_core(stbi__context *s) +{ + int i; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) + return 0; + + for(i=0;i<84;++i) + stbi__get8(s); + + if (!stbi__pic_is4(s,"PICT")) + return 0; + + return 1; +} + +typedef struct +{ + stbi_uc size,type,channel; +} stbi__pic_packet; + +static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) +{ + int mask=0x80, i; + + for (i=0; i<4; ++i, mask>>=1) { + if (channel & mask) { + if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); + dest[i]=stbi__get8(s); + } + } + + return dest; +} + +static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) +{ + int mask=0x80,i; + + for (i=0;i<4; ++i, mask>>=1) + if (channel&mask) + dest[i]=src[i]; +} + +static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) +{ + int act_comp=0,num_packets=0,y,chained; + stbi__pic_packet packets[10]; + + // this will (should...) cater for even some bizarre stuff like having data + // for the same channel in multiple packets. + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return stbi__errpuc("bad format","too many packets"); + + packet = &packets[num_packets++]; + + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + + act_comp |= packet->channel; + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); + if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? + + for(y=0; ytype) { + default: + return stbi__errpuc("bad format","packet has bad compression type"); + + case 0: {//uncompressed + int x; + + for(x=0;xchannel,dest)) + return 0; + break; + } + + case 1://Pure RLE + { + int left=width, i; + + while (left>0) { + stbi_uc count,value[4]; + + count=stbi__get8(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); + + if (count > left) + count = (stbi_uc) left; + + if (!stbi__readval(s,packet->channel,value)) return 0; + + for(i=0; ichannel,dest,value); + left -= count; + } + } + break; + + case 2: {//Mixed RLE + int left=width; + while (left>0) { + int count = stbi__get8(s), i; + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); + + if (count >= 128) { // Repeated + stbi_uc value[4]; + + if (count==128) + count = stbi__get16be(s); + else + count -= 127; + if (count > left) + return stbi__errpuc("bad file","scanline overrun"); + + if (!stbi__readval(s,packet->channel,value)) + return 0; + + for(i=0;ichannel,dest,value); + } else { // Raw + ++count; + if (count>left) return stbi__errpuc("bad file","scanline overrun"); + + for(i=0;ichannel,dest)) + return 0; + } + left-=count; + } + break; + } + } + } + } + + return result; +} + +static void *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp, stbi__result_info *ri) +{ + stbi_uc *result; + int i, x,y, internal_comp; + STBI_NOTUSED(ri); + + if (!comp) comp = &internal_comp; + + for (i=0; i<92; ++i) + stbi__get8(s); + + x = stbi__get16be(s); + y = stbi__get16be(s); + + if (y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); + if (!stbi__mad3sizes_valid(x, y, 4, 0)) return stbi__errpuc("too large", "PIC image too large to decode"); + + stbi__get32be(s); //skip `ratio' + stbi__get16be(s); //skip `fields' + stbi__get16be(s); //skip `pad' + + // intermediate buffer is RGBA + result = (stbi_uc *) stbi__malloc_mad3(x, y, 4, 0); + memset(result, 0xff, x*y*4); + + if (!stbi__pic_load_core(s,x,y,comp, result)) { + STBI_FREE(result); + result=0; + } + *px = x; + *py = y; + if (req_comp == 0) req_comp = *comp; + result=stbi__convert_format(result,4,req_comp,x,y); + + return result; +} + +static int stbi__pic_test(stbi__context *s) +{ + int r = stbi__pic_test_core(s); + stbi__rewind(s); + return r; +} +#endif + +// ************************************************************************************************* +// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb + +#ifndef STBI_NO_GIF +typedef struct +{ + stbi__int16 prefix; + stbi_uc first; + stbi_uc suffix; +} stbi__gif_lzw; + +typedef struct +{ + int w,h; + stbi_uc *out; // output buffer (always 4 components) + stbi_uc *background; // The current "background" as far as a gif is concerned + stbi_uc *history; + int flags, bgindex, ratio, transparent, eflags; + stbi_uc pal[256][4]; + stbi_uc lpal[256][4]; + stbi__gif_lzw codes[8192]; + stbi_uc *color_table; + int parse, step; + int lflags; + int start_x, start_y; + int max_x, max_y; + int cur_x, cur_y; + int line_size; + int delay; +} stbi__gif; + +static int stbi__gif_test_raw(stbi__context *s) +{ + int sz; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; + sz = stbi__get8(s); + if (sz != '9' && sz != '7') return 0; + if (stbi__get8(s) != 'a') return 0; + return 1; +} + +static int stbi__gif_test(stbi__context *s) +{ + int r = stbi__gif_test_raw(s); + stbi__rewind(s); + return r; +} + +static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) +{ + int i; + for (i=0; i < num_entries; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + pal[i][3] = transp == i ? 0 : 255; + } +} + +static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) +{ + stbi_uc version; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') + return stbi__err("not GIF", "Corrupt GIF"); + + version = stbi__get8(s); + if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); + if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); + + stbi__g_failure_reason = ""; + g->w = stbi__get16le(s); + g->h = stbi__get16le(s); + g->flags = stbi__get8(s); + g->bgindex = stbi__get8(s); + g->ratio = stbi__get8(s); + g->transparent = -1; + + if (g->w > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (g->h > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + + if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments + + if (is_info) return 1; + + if (g->flags & 0x80) + stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); + + return 1; +} + +static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); + if (!stbi__gif_header(s, g, comp, 1)) { + STBI_FREE(g); + stbi__rewind( s ); + return 0; + } + if (x) *x = g->w; + if (y) *y = g->h; + STBI_FREE(g); + return 1; +} + +static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) +{ + stbi_uc *p, *c; + int idx; + + // recurse to decode the prefixes, since the linked-list is backwards, + // and working backwards through an interleaved image would be nasty + if (g->codes[code].prefix >= 0) + stbi__out_gif_code(g, g->codes[code].prefix); + + if (g->cur_y >= g->max_y) return; + + idx = g->cur_x + g->cur_y; + p = &g->out[idx]; + g->history[idx / 4] = 1; + + c = &g->color_table[g->codes[code].suffix * 4]; + if (c[3] > 128) { // don't render transparent pixels; + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } + g->cur_x += 4; + + if (g->cur_x >= g->max_x) { + g->cur_x = g->start_x; + g->cur_y += g->step; + + while (g->cur_y >= g->max_y && g->parse > 0) { + g->step = (1 << g->parse) * g->line_size; + g->cur_y = g->start_y + (g->step >> 1); + --g->parse; + } + } +} + +static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) +{ + stbi_uc lzw_cs; + stbi__int32 len, init_code; + stbi__uint32 first; + stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; + stbi__gif_lzw *p; + + lzw_cs = stbi__get8(s); + if (lzw_cs > 12) return NULL; + clear = 1 << lzw_cs; + first = 1; + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + bits = 0; + valid_bits = 0; + for (init_code = 0; init_code < clear; init_code++) { + g->codes[init_code].prefix = -1; + g->codes[init_code].first = (stbi_uc) init_code; + g->codes[init_code].suffix = (stbi_uc) init_code; + } + + // support no starting clear code + avail = clear+2; + oldcode = -1; + + len = 0; + for(;;) { + if (valid_bits < codesize) { + if (len == 0) { + len = stbi__get8(s); // start new block + if (len == 0) + return g->out; + } + --len; + bits |= (stbi__int32) stbi__get8(s) << valid_bits; + valid_bits += 8; + } else { + stbi__int32 code = bits & codemask; + bits >>= codesize; + valid_bits -= codesize; + // @OPTIMIZE: is there some way we can accelerate the non-clear path? + if (code == clear) { // clear code + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + avail = clear + 2; + oldcode = -1; + first = 0; + } else if (code == clear + 1) { // end of stream code + stbi__skip(s, len); + while ((len = stbi__get8(s)) > 0) + stbi__skip(s,len); + return g->out; + } else if (code <= avail) { + if (first) { + return stbi__errpuc("no clear code", "Corrupt GIF"); + } + + if (oldcode >= 0) { + p = &g->codes[avail++]; + if (avail > 8192) { + return stbi__errpuc("too many codes", "Corrupt GIF"); + } + + p->prefix = (stbi__int16) oldcode; + p->first = g->codes[oldcode].first; + p->suffix = (code == avail) ? p->first : g->codes[code].first; + } else if (code == avail) + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + + stbi__out_gif_code(g, (stbi__uint16) code); + + if ((avail & codemask) == 0 && avail <= 0x0FFF) { + codesize++; + codemask = (1 << codesize) - 1; + } + + oldcode = code; + } else { + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + } + } + } +} + +// this function is designed to support animated gifs, although stb_image doesn't support it +// two back is the image from two frames ago, used for a very specific disposal format +static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp, stbi_uc *two_back) +{ + int dispose; + int first_frame; + int pi; + int pcount; + STBI_NOTUSED(req_comp); + + // on first frame, any non-written pixels get the background colour (non-transparent) + first_frame = 0; + if (g->out == 0) { + if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header + if (!stbi__mad3sizes_valid(4, g->w, g->h, 0)) + return stbi__errpuc("too large", "GIF image is too large"); + pcount = g->w * g->h; + g->out = (stbi_uc *) stbi__malloc(4 * pcount); + g->background = (stbi_uc *) stbi__malloc(4 * pcount); + g->history = (stbi_uc *) stbi__malloc(pcount); + if (!g->out || !g->background || !g->history) + return stbi__errpuc("outofmem", "Out of memory"); + + // image is treated as "transparent" at the start - ie, nothing overwrites the current background; + // background colour is only used for pixels that are not rendered first frame, after that "background" + // color refers to the color that was there the previous frame. + memset(g->out, 0x00, 4 * pcount); + memset(g->background, 0x00, 4 * pcount); // state of the background (starts transparent) + memset(g->history, 0x00, pcount); // pixels that were affected previous frame + first_frame = 1; + } else { + // second frame - how do we dispose of the previous one? + dispose = (g->eflags & 0x1C) >> 2; + pcount = g->w * g->h; + + if ((dispose == 3) && (two_back == 0)) { + dispose = 2; // if I don't have an image to revert back to, default to the old background + } + + if (dispose == 3) { // use previous graphic + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &two_back[pi * 4], 4 ); + } + } + } else if (dispose == 2) { + // restore what was changed last frame to background before that frame; + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &g->background[pi * 4], 4 ); + } + } + } else { + // This is a non-disposal case eithe way, so just + // leave the pixels as is, and they will become the new background + // 1: do not dispose + // 0: not specified. + } + + // background is what out is after the undoing of the previou frame; + memcpy( g->background, g->out, 4 * g->w * g->h ); + } + + // clear my history; + memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame + + for (;;) { + int tag = stbi__get8(s); + switch (tag) { + case 0x2C: /* Image Descriptor */ + { + stbi__int32 x, y, w, h; + stbi_uc *o; + + x = stbi__get16le(s); + y = stbi__get16le(s); + w = stbi__get16le(s); + h = stbi__get16le(s); + if (((x + w) > (g->w)) || ((y + h) > (g->h))) + return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); + + g->line_size = g->w * 4; + g->start_x = x * 4; + g->start_y = y * g->line_size; + g->max_x = g->start_x + w * 4; + g->max_y = g->start_y + h * g->line_size; + g->cur_x = g->start_x; + g->cur_y = g->start_y; + + // if the width of the specified rectangle is 0, that means + // we may not see *any* pixels or the image is malformed; + // to make sure this is caught, move the current y down to + // max_y (which is what out_gif_code checks). + if (w == 0) + g->cur_y = g->max_y; + + g->lflags = stbi__get8(s); + + if (g->lflags & 0x40) { + g->step = 8 * g->line_size; // first interlaced spacing + g->parse = 3; + } else { + g->step = g->line_size; + g->parse = 0; + } + + if (g->lflags & 0x80) { + stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); + g->color_table = (stbi_uc *) g->lpal; + } else if (g->flags & 0x80) { + g->color_table = (stbi_uc *) g->pal; + } else + return stbi__errpuc("missing color table", "Corrupt GIF"); + + o = stbi__process_gif_raster(s, g); + if (!o) return NULL; + + // if this was the first frame, + pcount = g->w * g->h; + if (first_frame && (g->bgindex > 0)) { + // if first frame, any pixel not drawn to gets the background color + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi] == 0) { + g->pal[g->bgindex][3] = 255; // just in case it was made transparent, undo that; It will be reset next frame if need be; + memcpy( &g->out[pi * 4], &g->pal[g->bgindex], 4 ); + } + } + } + + return o; + } + + case 0x21: // Comment Extension. + { + int len; + int ext = stbi__get8(s); + if (ext == 0xF9) { // Graphic Control Extension. + len = stbi__get8(s); + if (len == 4) { + g->eflags = stbi__get8(s); + g->delay = 10 * stbi__get16le(s); // delay - 1/100th of a second, saving as 1/1000ths. + + // unset old transparent + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 255; + } + if (g->eflags & 0x01) { + g->transparent = stbi__get8(s); + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 0; + } + } else { + // don't need transparent + stbi__skip(s, 1); + g->transparent = -1; + } + } else { + stbi__skip(s, len); + break; + } + } + while ((len = stbi__get8(s)) != 0) { + stbi__skip(s, len); + } + break; + } + + case 0x3B: // gif stream termination code + return (stbi_uc *) s; // using '1' causes warning on some compilers + + default: + return stbi__errpuc("unknown code", "Corrupt GIF"); + } + } +} + +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + if (stbi__gif_test(s)) { + int layers = 0; + stbi_uc *u = 0; + stbi_uc *out = 0; + stbi_uc *two_back = 0; + stbi__gif g; + int stride; + int out_size = 0; + int delays_size = 0; + memset(&g, 0, sizeof(g)); + if (delays) { + *delays = 0; + } + + do { + u = stbi__gif_load_next(s, &g, comp, req_comp, two_back); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + + if (u) { + *x = g.w; + *y = g.h; + ++layers; + stride = g.w * g.h * 4; + + if (out) { + void *tmp = (stbi_uc*) STBI_REALLOC_SIZED( out, out_size, layers * stride ); + if (NULL == tmp) { + STBI_FREE(g.out); + STBI_FREE(g.history); + STBI_FREE(g.background); + return stbi__errpuc("outofmem", "Out of memory"); + } + else { + out = (stbi_uc*) tmp; + out_size = layers * stride; + } + + if (delays) { + *delays = (int*) STBI_REALLOC_SIZED( *delays, delays_size, sizeof(int) * layers ); + delays_size = layers * sizeof(int); + } + } else { + out = (stbi_uc*)stbi__malloc( layers * stride ); + out_size = layers * stride; + if (delays) { + *delays = (int*) stbi__malloc( layers * sizeof(int) ); + delays_size = layers * sizeof(int); + } + } + memcpy( out + ((layers - 1) * stride), u, stride ); + if (layers >= 2) { + two_back = out - 2 * stride; + } + + if (delays) { + (*delays)[layers - 1U] = g.delay; + } + } + } while (u != 0); + + // free temp buffer; + STBI_FREE(g.out); + STBI_FREE(g.history); + STBI_FREE(g.background); + + // do the final conversion after loading everything; + if (req_comp && req_comp != 4) + out = stbi__convert_format(out, 4, req_comp, layers * g.w, g.h); + + *z = layers; + return out; + } else { + return stbi__errpuc("not GIF", "Image was not as a gif type."); + } +} + +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *u = 0; + stbi__gif g; + memset(&g, 0, sizeof(g)); + STBI_NOTUSED(ri); + + u = stbi__gif_load_next(s, &g, comp, req_comp, 0); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + if (u) { + *x = g.w; + *y = g.h; + + // moved conversion to after successful load so that the same + // can be done for multiple frames. + if (req_comp && req_comp != 4) + u = stbi__convert_format(u, 4, req_comp, g.w, g.h); + } else if (g.out) { + // if there was an error and we allocated an image buffer, free it! + STBI_FREE(g.out); + } + + // free buffers needed for multiple frame loading; + STBI_FREE(g.history); + STBI_FREE(g.background); + + return u; +} + +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) +{ + return stbi__gif_info_raw(s,x,y,comp); +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR loader +// originally by Nicolas Schulz +#ifndef STBI_NO_HDR +static int stbi__hdr_test_core(stbi__context *s, const char *signature) +{ + int i; + for (i=0; signature[i]; ++i) + if (stbi__get8(s) != signature[i]) + return 0; + stbi__rewind(s); + return 1; +} + +static int stbi__hdr_test(stbi__context* s) +{ + int r = stbi__hdr_test_core(s, "#?RADIANCE\n"); + stbi__rewind(s); + if(!r) { + r = stbi__hdr_test_core(s, "#?RGBE\n"); + stbi__rewind(s); + } + return r; +} + +#define STBI__HDR_BUFLEN 1024 +static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) +{ + int len=0; + char c = '\0'; + + c = (char) stbi__get8(z); + + while (!stbi__at_eof(z) && c != '\n') { + buffer[len++] = c; + if (len == STBI__HDR_BUFLEN-1) { + // flush to end of line + while (!stbi__at_eof(z) && stbi__get8(z) != '\n') + ; + break; + } + c = (char) stbi__get8(z); + } + + buffer[len] = 0; + return buffer; +} + +static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) +{ + if ( input[3] != 0 ) { + float f1; + // Exponent + f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); + if (req_comp <= 2) + output[0] = (input[0] + input[1] + input[2]) * f1 / 3; + else { + output[0] = input[0] * f1; + output[1] = input[1] * f1; + output[2] = input[2] * f1; + } + if (req_comp == 2) output[1] = 1; + if (req_comp == 4) output[3] = 1; + } else { + switch (req_comp) { + case 4: output[3] = 1; /* fallthrough */ + case 3: output[0] = output[1] = output[2] = 0; + break; + case 2: output[1] = 1; /* fallthrough */ + case 1: output[0] = 0; + break; + } + } +} + +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int width, height; + stbi_uc *scanline; + float *hdr_data; + int len; + unsigned char count, value; + int i, j, k, c1,c2, z; + const char *headerToken; + STBI_NOTUSED(ri); + + // Check identifier + headerToken = stbi__hdr_gettoken(s,buffer); + if (strcmp(headerToken, "#?RADIANCE") != 0 && strcmp(headerToken, "#?RGBE") != 0) + return stbi__errpf("not HDR", "Corrupt HDR image"); + + // Parse header + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); + + // Parse width and height + // can't use sscanf() if we're not using stdio! + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + height = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + width = (int) strtol(token, NULL, 10); + + if (height > STBI_MAX_DIMENSIONS) return stbi__errpf("too large","Very large image (corrupt?)"); + if (width > STBI_MAX_DIMENSIONS) return stbi__errpf("too large","Very large image (corrupt?)"); + + *x = width; + *y = height; + + if (comp) *comp = 3; + if (req_comp == 0) req_comp = 3; + + if (!stbi__mad4sizes_valid(width, height, req_comp, sizeof(float), 0)) + return stbi__errpf("too large", "HDR image is too large"); + + // Read data + hdr_data = (float *) stbi__malloc_mad4(width, height, req_comp, sizeof(float), 0); + if (!hdr_data) + return stbi__errpf("outofmem", "Out of memory"); + + // Load image data + // image data is stored as some number of sca + if ( width < 8 || width >= 32768) { + // Read flat data + for (j=0; j < height; ++j) { + for (i=0; i < width; ++i) { + stbi_uc rgbe[4]; + main_decode_loop: + stbi__getn(s, rgbe, 4); + stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); + } + } + } else { + // Read RLE-encoded data + scanline = NULL; + + for (j = 0; j < height; ++j) { + c1 = stbi__get8(s); + c2 = stbi__get8(s); + len = stbi__get8(s); + if (c1 != 2 || c2 != 2 || (len & 0x80)) { + // not run-length encoded, so we have to actually use THIS data as a decoded + // pixel (note this can't be a valid pixel--one of RGB must be >= 128) + stbi_uc rgbe[4]; + rgbe[0] = (stbi_uc) c1; + rgbe[1] = (stbi_uc) c2; + rgbe[2] = (stbi_uc) len; + rgbe[3] = (stbi_uc) stbi__get8(s); + stbi__hdr_convert(hdr_data, rgbe, req_comp); + i = 1; + j = 0; + STBI_FREE(scanline); + goto main_decode_loop; // yes, this makes no sense + } + len <<= 8; + len |= stbi__get8(s); + if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } + if (scanline == NULL) { + scanline = (stbi_uc *) stbi__malloc_mad2(width, 4, 0); + if (!scanline) { + STBI_FREE(hdr_data); + return stbi__errpf("outofmem", "Out of memory"); + } + } + + for (k = 0; k < 4; ++k) { + int nleft; + i = 0; + while ((nleft = width - i) > 0) { + count = stbi__get8(s); + if (count > 128) { + // Run + value = stbi__get8(s); + count -= 128; + if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = value; + } else { + // Dump + if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = stbi__get8(s); + } + } + } + for (i=0; i < width; ++i) + stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); + } + if (scanline) + STBI_FREE(scanline); + } + + return hdr_data; +} + +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int dummy; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (stbi__hdr_test(s) == 0) { + stbi__rewind( s ); + return 0; + } + + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) { + stbi__rewind( s ); + return 0; + } + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *y = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *x = (int) strtol(token, NULL, 10); + *comp = 3; + return 1; +} +#endif // STBI_NO_HDR + +#ifndef STBI_NO_BMP +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) +{ + void *p; + stbi__bmp_data info; + + info.all_a = 255; + p = stbi__bmp_parse_header(s, &info); + stbi__rewind( s ); + if (p == NULL) + return 0; + if (x) *x = s->img_x; + if (y) *y = s->img_y; + if (comp) { + if (info.bpp == 24 && info.ma == 0xff000000) + *comp = 3; + else + *comp = info.ma ? 4 : 3; + } + return 1; +} +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) +{ + int channelCount, dummy, depth; + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + *y = stbi__get32be(s); + *x = stbi__get32be(s); + depth = stbi__get16be(s); + if (depth != 8 && depth != 16) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 3) { + stbi__rewind( s ); + return 0; + } + *comp = 4; + return 1; +} + +static int stbi__psd_is16(stbi__context *s) +{ + int channelCount, depth; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + (void) stbi__get32be(s); + (void) stbi__get32be(s); + depth = stbi__get16be(s); + if (depth != 16) { + stbi__rewind( s ); + return 0; + } + return 1; +} +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) +{ + int act_comp=0,num_packets=0,chained,dummy; + stbi__pic_packet packets[10]; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { + stbi__rewind(s); + return 0; + } + + stbi__skip(s, 88); + + *x = stbi__get16be(s); + *y = stbi__get16be(s); + if (stbi__at_eof(s)) { + stbi__rewind( s); + return 0; + } + if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { + stbi__rewind( s ); + return 0; + } + + stbi__skip(s, 8); + + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return 0; + + packet = &packets[num_packets++]; + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + act_comp |= packet->channel; + + if (stbi__at_eof(s)) { + stbi__rewind( s ); + return 0; + } + if (packet->size != 8) { + stbi__rewind( s ); + return 0; + } + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); + + return 1; +} +#endif + +// ************************************************************************************************* +// Portable Gray Map and Portable Pixel Map loader +// by Ken Miller +// +// PGM: http://netpbm.sourceforge.net/doc/pgm.html +// PPM: http://netpbm.sourceforge.net/doc/ppm.html +// +// Known limitations: +// Does not support comments in the header section +// Does not support ASCII image data (formats P2 and P3) +// Does not support 16-bit-per-channel + +#ifndef STBI_NO_PNM + +static int stbi__pnm_test(stbi__context *s) +{ + char p, t; + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind( s ); + return 0; + } + return 1; +} + +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + STBI_NOTUSED(ri); + + if (!stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n)) + return 0; + + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + + if (!stbi__mad3sizes_valid(s->img_n, s->img_x, s->img_y, 0)) + return stbi__errpuc("too large", "PNM too large"); + + out = (stbi_uc *) stbi__malloc_mad3(s->img_n, s->img_x, s->img_y, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + stbi__getn(s, out, s->img_n * s->img_x * s->img_y); + + if (req_comp && req_comp != s->img_n) { + out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + return out; +} + +static int stbi__pnm_isspace(char c) +{ + return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; +} + +static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) +{ + for (;;) { + while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) + *c = (char) stbi__get8(s); + + if (stbi__at_eof(s) || *c != '#') + break; + + while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) + *c = (char) stbi__get8(s); + } +} + +static int stbi__pnm_isdigit(char c) +{ + return c >= '0' && c <= '9'; +} + +static int stbi__pnm_getinteger(stbi__context *s, char *c) +{ + int value = 0; + + while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { + value = value*10 + (*c - '0'); + *c = (char) stbi__get8(s); + } + + return value; +} + +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) +{ + int maxv, dummy; + char c, p, t; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + stbi__rewind(s); + + // Get identifier + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind(s); + return 0; + } + + *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm + + c = (char) stbi__get8(s); + stbi__pnm_skip_whitespace(s, &c); + + *x = stbi__pnm_getinteger(s, &c); // read width + stbi__pnm_skip_whitespace(s, &c); + + *y = stbi__pnm_getinteger(s, &c); // read height + stbi__pnm_skip_whitespace(s, &c); + + maxv = stbi__pnm_getinteger(s, &c); // read max value + + if (maxv > 255) + return stbi__err("max value > 255", "PPM image not 8-bit"); + else + return 1; +} +#endif + +static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) +{ + #ifndef STBI_NO_JPEG + if (stbi__jpeg_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNG + if (stbi__png_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_GIF + if (stbi__gif_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_BMP + if (stbi__bmp_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PIC + if (stbi__pic_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNM + if (stbi__pnm_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_info(s, x, y, comp)) return 1; + #endif + + // test tga last because it's a crappy test! + #ifndef STBI_NO_TGA + if (stbi__tga_info(s, x, y, comp)) + return 1; + #endif + return stbi__err("unknown image type", "Image not of any known type, or corrupt"); +} + +static int stbi__is_16_main(stbi__context *s) +{ + #ifndef STBI_NO_PNG + if (stbi__png_is16(s)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_is16(s)) return 1; + #endif + + return 0; +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_info_from_file(f, x, y, comp); + fclose(f); + return result; +} + +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__info_main(&s,x,y,comp); + fseek(f,pos,SEEK_SET); + return r; +} + +STBIDEF int stbi_is_16_bit(char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_is_16_bit_from_file(f); + fclose(f); + return result; +} + +STBIDEF int stbi_is_16_bit_from_file(FILE *f) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__is_16_main(&s); + fseek(f,pos,SEEK_SET); + return r; +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__is_16_main(&s); +} + +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *c, void *user) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__is_16_main(&s); +} + +#endif // STB_IMAGE_IMPLEMENTATION + +/* + revision history: + 2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) change sbti__shiftsigned to avoid clang -O2 bug + 1-bit BMP + *_is_16_bit api + avoid warnings + 2.16 (2017-07-23) all functions have 16-bit variants; + STBI_NO_STDIO works again; + compilation fixes; + fix rounding in unpremultiply; + optimize vertical flip; + disable raw_len validation; + documentation fixes + 2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode; + warning fixes; disable run-time SSE detection on gcc; + uniform handling of optional "return" values; + thread-safe initialization of zlib tables + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-11-29) add 16-bit API, only supported for PNG right now + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) allocate large structures on the stack + remove white matting for transparent PSD + fix reported channel count for PNG & BMP + re-enable SSE2 in non-gcc 64-bit + support RGB-formatted JPEG + read 16-bit PNGs (only as 8-bit) + 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED + 2.09 (2016-01-16) allow comments in PNM files + 16-bit-per-pixel TGA (not bit-per-component) + info() for TGA could break due to .hdr handling + info() for BMP to shares code instead of sloppy parse + can use STBI_REALLOC_SIZED if allocator doesn't support realloc + code cleanup + 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA + 2.07 (2015-09-13) fix compiler warnings + partial animated GIF support + limited 16-bpc PSD support + #ifdef unused functions + bug with < 92 byte PIC,PNM,HDR,TGA + 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value + 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning + 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit + 2.03 (2015-04-12) extra corruption checking (mmozeiko) + stbi_set_flip_vertically_on_load (nguillemot) + fix NEON support; fix mingw support + 2.02 (2015-01-19) fix incorrect assert, fix warning + 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 + 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG + 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) + progressive JPEG (stb) + PGM/PPM support (Ken Miller) + STBI_MALLOC,STBI_REALLOC,STBI_FREE + GIF bugfix -- seemingly never worked + STBI_NO_*, STBI_ONLY_* + 1.48 (2014-12-14) fix incorrectly-named assert() + 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) + optimize PNG (ryg) + fix bug in interlaced PNG with user-specified channel count (stb) + 1.46 (2014-08-26) + fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG + 1.45 (2014-08-16) + fix MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) + various warning fixes from Ronny Chevalier + 1.43 (2014-07-15) + fix MSVC-only compiler problem in code changed in 1.42 + 1.42 (2014-07-09) + don't define _CRT_SECURE_NO_WARNINGS (affects user code) + fixes to stbi__cleanup_jpeg path + added STBI_ASSERT to avoid requiring assert.h + 1.41 (2014-06-25) + fix search&replace from 1.36 that messed up comments/error messages + 1.40 (2014-06-22) + fix gcc struct-initialization warning + 1.39 (2014-06-15) + fix to TGA optimization when req_comp != number of components in TGA; + fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) + add support for BMP version 5 (more ignored fields) + 1.38 (2014-06-06) + suppress MSVC warnings on integer casts truncating values + fix accidental rename of 'skip' field of I/O + 1.37 (2014-06-04) + remove duplicate typedef + 1.36 (2014-06-03) + convert to header file single-file library + if de-iphone isn't set, load iphone images color-swapped instead of returning NULL + 1.35 (2014-05-27) + various warnings + fix broken STBI_SIMD path + fix bug where stbi_load_from_file no longer left file pointer in correct place + fix broken non-easy path for 32-bit BMP (possibly never used) + TGA optimization by Arseny Kapoulkine + 1.34 (unknown) + use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case + 1.33 (2011-07-14) + make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements + 1.32 (2011-07-13) + support for "info" function for all supported filetypes (SpartanJ) + 1.31 (2011-06-20) + a few more leak fixes, bug in PNG handling (SpartanJ) + 1.30 (2011-06-11) + added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) + removed deprecated format-specific test/load functions + removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway + error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) + fix inefficiency in decoding 32-bit BMP (David Woo) + 1.29 (2010-08-16) + various warning fixes from Aurelien Pocheville + 1.28 (2010-08-01) + fix bug in GIF palette transparency (SpartanJ) + 1.27 (2010-08-01) + cast-to-stbi_uc to fix warnings + 1.26 (2010-07-24) + fix bug in file buffering for PNG reported by SpartanJ + 1.25 (2010-07-17) + refix trans_data warning (Won Chun) + 1.24 (2010-07-12) + perf improvements reading from files on platforms with lock-heavy fgetc() + minor perf improvements for jpeg + deprecated type-specific functions so we'll get feedback if they're needed + attempt to fix trans_data warning (Won Chun) + 1.23 fixed bug in iPhone support + 1.22 (2010-07-10) + removed image *writing* support + stbi_info support from Jetro Lauha + GIF support from Jean-Marc Lienher + iPhone PNG-extensions from James Brown + warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) + 1.21 fix use of 'stbi_uc' in header (reported by jon blow) + 1.20 added support for Softimage PIC, by Tom Seddon + 1.19 bug in interlaced PNG corruption check (found by ryg) + 1.18 (2008-08-02) + fix a threading bug (local mutable static) + 1.17 support interlaced PNG + 1.16 major bugfix - stbi__convert_format converted one too many pixels + 1.15 initialize some fields for thread safety + 1.14 fix threadsafe conversion bug + header-file-only version (#define STBI_HEADER_FILE_ONLY before including) + 1.13 threadsafe + 1.12 const qualifiers in the API + 1.11 Support installable IDCT, colorspace conversion routines + 1.10 Fixes for 64-bit (don't use "unsigned long") + optimized upsampling by Fabian "ryg" Giesen + 1.09 Fix format-conversion for PSD code (bad global variables!) + 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz + 1.07 attempt to fix C++ warning/errors again + 1.06 attempt to fix C++ warning/errors again + 1.05 fix TGA loading to return correct *comp and use good luminance calc + 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free + 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR + 1.02 support for (subset of) HDR files, float interface for preferred access to them + 1.01 fix bug: possible bug in handling right-side up bmps... not sure + fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all + 1.00 interface to zlib that skips zlib header + 0.99 correct handling of alpha in palette + 0.98 TGA loader by lonesock; dynamically add loaders (untested) + 0.97 jpeg errors on too large a file; also catch another malloc failure + 0.96 fix detection of invalid v value - particleman@mollyrocket forum + 0.95 during header scan, seek to markers in case of padding + 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same + 0.93 handle jpegtran output; verbose errors + 0.92 read 4,8,16,24,32-bit BMP files of several formats + 0.91 output 24-bit Windows 3.0 BMP files + 0.90 fix a few more warnings; bump version number to approach 1.0 + 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd + 0.60 fix compiling as c++ + 0.59 fix warnings: merge Dave Moore's -Wall fixes + 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian + 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available + 0.56 fix bug: zlib uncompressed mode len vs. nlen + 0.55 fix bug: restart_interval not initialized to 0 + 0.54 allow NULL for 'int *comp' + 0.53 fix bug in png 3->4; speedup png decoding + 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments + 0.51 obey req_comp requests, 1-component jpegs return as 1-component, + on 'test' only check type, not whether we support this variant + 0.50 (2006-11-19) + first released version +*/ + + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/extern/igfd/stb/stb_image_resize.h b/extern/igfd/stb/stb_image_resize.h new file mode 100644 index 00000000..42a8efb1 --- /dev/null +++ b/extern/igfd/stb/stb_image_resize.h @@ -0,0 +1,2631 @@ +/* stb_image_resize - v0.96 - public domain image resizing + by Jorge L Rodriguez (@VinoBS) - 2014 + http://github.com/nothings/stb + + Written with emphasis on usability, portability, and efficiency. (No + SIMD or threads, so it be easily outperformed by libs that use those.) + Only scaling and translation is supported, no rotations or shears. + Easy API downsamples w/Mitchell filter, upsamples w/cubic interpolation. + + COMPILING & LINKING + In one C/C++ file that #includes this file, do this: + #define STB_IMAGE_RESIZE_IMPLEMENTATION + before the #include. That will create the implementation in that file. + + QUICKSTART + stbir_resize_uint8( input_pixels , in_w , in_h , 0, + output_pixels, out_w, out_h, 0, num_channels) + stbir_resize_float(...) + stbir_resize_uint8_srgb( input_pixels , in_w , in_h , 0, + output_pixels, out_w, out_h, 0, + num_channels , alpha_chan , 0) + stbir_resize_uint8_srgb_edgemode( + input_pixels , in_w , in_h , 0, + output_pixels, out_w, out_h, 0, + num_channels , alpha_chan , 0, STBIR_EDGE_CLAMP) + // WRAP/REFLECT/ZERO + + FULL API + See the "header file" section of the source for API documentation. + + ADDITIONAL DOCUMENTATION + + SRGB & FLOATING POINT REPRESENTATION + The sRGB functions presume IEEE floating point. If you do not have + IEEE floating point, define STBIR_NON_IEEE_FLOAT. This will use + a slower implementation. + + MEMORY ALLOCATION + The resize functions here perform a single memory allocation using + malloc. To control the memory allocation, before the #include that + triggers the implementation, do: + + #define STBIR_MALLOC(size,context) ... + #define STBIR_FREE(ptr,context) ... + + Each resize function makes exactly one call to malloc/free, so to use + temp memory, store the temp memory in the context and return that. + + ASSERT + Define STBIR_ASSERT(boolval) to override assert() and not use assert.h + + OPTIMIZATION + Define STBIR_SATURATE_INT to compute clamp values in-range using + integer operations instead of float operations. This may be faster + on some platforms. + + DEFAULT FILTERS + For functions which don't provide explicit control over what filters + to use, you can change the compile-time defaults with + + #define STBIR_DEFAULT_FILTER_UPSAMPLE STBIR_FILTER_something + #define STBIR_DEFAULT_FILTER_DOWNSAMPLE STBIR_FILTER_something + + See stbir_filter in the header-file section for the list of filters. + + NEW FILTERS + A number of 1D filter kernels are used. For a list of + supported filters see the stbir_filter enum. To add a new filter, + write a filter function and add it to stbir__filter_info_table. + + PROGRESS + For interactive use with slow resize operations, you can install + a progress-report callback: + + #define STBIR_PROGRESS_REPORT(val) some_func(val) + + The parameter val is a float which goes from 0 to 1 as progress is made. + + For example: + + static void my_progress_report(float progress); + #define STBIR_PROGRESS_REPORT(val) my_progress_report(val) + + #define STB_IMAGE_RESIZE_IMPLEMENTATION + #include "stb_image_resize.h" + + static void my_progress_report(float progress) + { + printf("Progress: %f%%\n", progress*100); + } + + MAX CHANNELS + If your image has more than 64 channels, define STBIR_MAX_CHANNELS + to the max you'll have. + + ALPHA CHANNEL + Most of the resizing functions provide the ability to control how + the alpha channel of an image is processed. The important things + to know about this: + + 1. The best mathematically-behaved version of alpha to use is + called "premultiplied alpha", in which the other color channels + have had the alpha value multiplied in. If you use premultiplied + alpha, linear filtering (such as image resampling done by this + library, or performed in texture units on GPUs) does the "right + thing". While premultiplied alpha is standard in the movie CGI + industry, it is still uncommon in the videogame/real-time world. + + If you linearly filter non-premultiplied alpha, strange effects + occur. (For example, the 50/50 average of 99% transparent bright green + and 1% transparent black produces 50% transparent dark green when + non-premultiplied, whereas premultiplied it produces 50% + transparent near-black. The former introduces green energy + that doesn't exist in the source image.) + + 2. Artists should not edit premultiplied-alpha images; artists + want non-premultiplied alpha images. Thus, art tools generally output + non-premultiplied alpha images. + + 3. You will get best results in most cases by converting images + to premultiplied alpha before processing them mathematically. + + 4. If you pass the flag STBIR_FLAG_ALPHA_PREMULTIPLIED, the + resizer does not do anything special for the alpha channel; + it is resampled identically to other channels. This produces + the correct results for premultiplied-alpha images, but produces + less-than-ideal results for non-premultiplied-alpha images. + + 5. If you do not pass the flag STBIR_FLAG_ALPHA_PREMULTIPLIED, + then the resizer weights the contribution of input pixels + based on their alpha values, or, equivalently, it multiplies + the alpha value into the color channels, resamples, then divides + by the resultant alpha value. Input pixels which have alpha=0 do + not contribute at all to output pixels unless _all_ of the input + pixels affecting that output pixel have alpha=0, in which case + the result for that pixel is the same as it would be without + STBIR_FLAG_ALPHA_PREMULTIPLIED. However, this is only true for + input images in integer formats. For input images in float format, + input pixels with alpha=0 have no effect, and output pixels + which have alpha=0 will be 0 in all channels. (For float images, + you can manually achieve the same result by adding a tiny epsilon + value to the alpha channel of every image, and then subtracting + or clamping it at the end.) + + 6. You can suppress the behavior described in #5 and make + all-0-alpha pixels have 0 in all channels by #defining + STBIR_NO_ALPHA_EPSILON. + + 7. You can separately control whether the alpha channel is + interpreted as linear or affected by the colorspace. By default + it is linear; you almost never want to apply the colorspace. + (For example, graphics hardware does not apply sRGB conversion + to the alpha channel.) + + CONTRIBUTORS + Jorge L Rodriguez: Implementation + Sean Barrett: API design, optimizations + Aras Pranckevicius: bugfix + Nathan Reed: warning fixes + + REVISIONS + 0.97 (2020-02-02) fixed warning + 0.96 (2019-03-04) fixed warnings + 0.95 (2017-07-23) fixed warnings + 0.94 (2017-03-18) fixed warnings + 0.93 (2017-03-03) fixed bug with certain combinations of heights + 0.92 (2017-01-02) fix integer overflow on large (>2GB) images + 0.91 (2016-04-02) fix warnings; fix handling of subpixel regions + 0.90 (2014-09-17) first released version + + LICENSE + See end of file for license information. + + TODO + Don't decode all of the image data when only processing a partial tile + Don't use full-width decode buffers when only processing a partial tile + When processing wide images, break processing into tiles so data fits in L1 cache + Installable filters? + Resize that respects alpha test coverage + (Reference code: FloatImage::alphaTestCoverage and FloatImage::scaleAlphaToCoverage: + https://code.google.com/p/nvidia-texture-tools/source/browse/trunk/src/nvimage/FloatImage.cpp ) +*/ + +#ifndef STBIR_INCLUDE_STB_IMAGE_RESIZE_H +#define STBIR_INCLUDE_STB_IMAGE_RESIZE_H + +#ifdef _MSC_VER +typedef unsigned char stbir_uint8; +typedef unsigned short stbir_uint16; +typedef unsigned int stbir_uint32; +#else +#include +typedef uint8_t stbir_uint8; +typedef uint16_t stbir_uint16; +typedef uint32_t stbir_uint32; +#endif + +#ifndef STBIRDEF +#ifdef STB_IMAGE_RESIZE_STATIC +#define STBIRDEF static +#else +#ifdef __cplusplus +#define STBIRDEF extern "C" +#else +#define STBIRDEF extern +#endif +#endif +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// Easy-to-use API: +// +// * "input pixels" points to an array of image data with 'num_channels' channels (e.g. RGB=3, RGBA=4) +// * input_w is input image width (x-axis), input_h is input image height (y-axis) +// * stride is the offset between successive rows of image data in memory, in bytes. you can +// specify 0 to mean packed continuously in memory +// * alpha channel is treated identically to other channels. +// * colorspace is linear or sRGB as specified by function name +// * returned result is 1 for success or 0 in case of an error. +// #define STBIR_ASSERT() to trigger an assert on parameter validation errors. +// * Memory required grows approximately linearly with input and output size, but with +// discontinuities at input_w == output_w and input_h == output_h. +// * These functions use a "default" resampling filter defined at compile time. To change the filter, +// you can change the compile-time defaults by #defining STBIR_DEFAULT_FILTER_UPSAMPLE +// and STBIR_DEFAULT_FILTER_DOWNSAMPLE, or you can use the medium-complexity API. + +STBIRDEF int stbir_resize_uint8( const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels); + +STBIRDEF int stbir_resize_float( const float *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + float *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels); + + +// The following functions interpret image data as gamma-corrected sRGB. +// Specify STBIR_ALPHA_CHANNEL_NONE if you have no alpha channel, +// or otherwise provide the index of the alpha channel. Flags value +// of 0 will probably do the right thing if you're not sure what +// the flags mean. + +#define STBIR_ALPHA_CHANNEL_NONE -1 + +// Set this flag if your texture has premultiplied alpha. Otherwise, stbir will +// use alpha-weighted resampling (effectively premultiplying, resampling, +// then unpremultiplying). +#define STBIR_FLAG_ALPHA_PREMULTIPLIED (1 << 0) +// The specified alpha channel should be handled as gamma-corrected value even +// when doing sRGB operations. +#define STBIR_FLAG_ALPHA_USES_COLORSPACE (1 << 1) + +STBIRDEF int stbir_resize_uint8_srgb(const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags); + + +typedef enum +{ + STBIR_EDGE_CLAMP = 1, + STBIR_EDGE_REFLECT = 2, + STBIR_EDGE_WRAP = 3, + STBIR_EDGE_ZERO = 4, +} stbir_edge; + +// This function adds the ability to specify how requests to sample off the edge of the image are handled. +STBIRDEF int stbir_resize_uint8_srgb_edgemode(const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode); + +////////////////////////////////////////////////////////////////////////////// +// +// Medium-complexity API +// +// This extends the easy-to-use API as follows: +// +// * Alpha-channel can be processed separately +// * If alpha_channel is not STBIR_ALPHA_CHANNEL_NONE +// * Alpha channel will not be gamma corrected (unless flags&STBIR_FLAG_GAMMA_CORRECT) +// * Filters will be weighted by alpha channel (unless flags&STBIR_FLAG_ALPHA_PREMULTIPLIED) +// * Filter can be selected explicitly +// * uint16 image type +// * sRGB colorspace available for all types +// * context parameter for passing to STBIR_MALLOC + +typedef enum +{ + STBIR_FILTER_DEFAULT = 0, // use same filter type that easy-to-use API chooses + STBIR_FILTER_BOX = 1, // A trapezoid w/1-pixel wide ramps, same result as box for integer scale ratios + STBIR_FILTER_TRIANGLE = 2, // On upsampling, produces same results as bilinear texture filtering + STBIR_FILTER_CUBICBSPLINE = 3, // The cubic b-spline (aka Mitchell-Netrevalli with B=1,C=0), gaussian-esque + STBIR_FILTER_CATMULLROM = 4, // An interpolating cubic spline + STBIR_FILTER_MITCHELL = 5, // Mitchell-Netrevalli filter with B=1/3, C=1/3 +} stbir_filter; + +typedef enum +{ + STBIR_COLORSPACE_LINEAR, + STBIR_COLORSPACE_SRGB, + + STBIR_MAX_COLORSPACES, +} stbir_colorspace; + +// The following functions are all identical except for the type of the image data + +STBIRDEF int stbir_resize_uint8_generic( const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space, + void *alloc_context); + +STBIRDEF int stbir_resize_uint16_generic(const stbir_uint16 *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + stbir_uint16 *output_pixels , int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space, + void *alloc_context); + +STBIRDEF int stbir_resize_float_generic( const float *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + float *output_pixels , int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space, + void *alloc_context); + + + +////////////////////////////////////////////////////////////////////////////// +// +// Full-complexity API +// +// This extends the medium API as follows: +// +// * uint32 image type +// * not typesafe +// * separate filter types for each axis +// * separate edge modes for each axis +// * can specify scale explicitly for subpixel correctness +// * can specify image source tile using texture coordinates + +typedef enum +{ + STBIR_TYPE_UINT8 , + STBIR_TYPE_UINT16, + STBIR_TYPE_UINT32, + STBIR_TYPE_FLOAT , + + STBIR_MAX_TYPES +} stbir_datatype; + +STBIRDEF int stbir_resize( const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + void *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + stbir_datatype datatype, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical, + stbir_filter filter_horizontal, stbir_filter filter_vertical, + stbir_colorspace space, void *alloc_context); + +STBIRDEF int stbir_resize_subpixel(const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + void *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + stbir_datatype datatype, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical, + stbir_filter filter_horizontal, stbir_filter filter_vertical, + stbir_colorspace space, void *alloc_context, + float x_scale, float y_scale, + float x_offset, float y_offset); + +STBIRDEF int stbir_resize_region( const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + void *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + stbir_datatype datatype, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical, + stbir_filter filter_horizontal, stbir_filter filter_vertical, + stbir_colorspace space, void *alloc_context, + float s0, float t0, float s1, float t1); +// (s0, t0) & (s1, t1) are the top-left and bottom right corner (uv addressing style: [0, 1]x[0, 1]) of a region of the input image to use. + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBIR_INCLUDE_STB_IMAGE_RESIZE_H + + + + + +#ifdef STB_IMAGE_RESIZE_IMPLEMENTATION + +#ifndef STBIR_ASSERT +#include +#define STBIR_ASSERT(x) assert(x) +#endif + +// For memset +#include + +#include + +#ifndef STBIR_MALLOC +#include +// use comma operator to evaluate c, to avoid "unused parameter" warnings +#define STBIR_MALLOC(size,c) ((void)(c), malloc(size)) +#define STBIR_FREE(ptr,c) ((void)(c), free(ptr)) +#endif + +#ifndef _MSC_VER +#ifdef __cplusplus +#define stbir__inline inline +#else +#define stbir__inline +#endif +#else +#define stbir__inline __forceinline +#endif + + +// should produce compiler error if size is wrong +typedef unsigned char stbir__validate_uint32[sizeof(stbir_uint32) == 4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBIR__NOTUSED(v) (void)(v) +#else +#define STBIR__NOTUSED(v) (void)sizeof(v) +#endif + +#define STBIR__ARRAY_SIZE(a) (sizeof((a))/sizeof((a)[0])) + +#ifndef STBIR_DEFAULT_FILTER_UPSAMPLE +#define STBIR_DEFAULT_FILTER_UPSAMPLE STBIR_FILTER_CATMULLROM +#endif + +#ifndef STBIR_DEFAULT_FILTER_DOWNSAMPLE +#define STBIR_DEFAULT_FILTER_DOWNSAMPLE STBIR_FILTER_MITCHELL +#endif + +#ifndef STBIR_PROGRESS_REPORT +#define STBIR_PROGRESS_REPORT(float_0_to_1) +#endif + +#ifndef STBIR_MAX_CHANNELS +#define STBIR_MAX_CHANNELS 64 +#endif + +#if STBIR_MAX_CHANNELS > 65536 +#error "Too many channels; STBIR_MAX_CHANNELS must be no more than 65536." +// because we store the indices in 16-bit variables +#endif + +// This value is added to alpha just before premultiplication to avoid +// zeroing out color values. It is equivalent to 2^-80. If you don't want +// that behavior (it may interfere if you have floating point images with +// very small alpha values) then you can define STBIR_NO_ALPHA_EPSILON to +// disable it. +#ifndef STBIR_ALPHA_EPSILON +#define STBIR_ALPHA_EPSILON ((float)1 / (1 << 20) / (1 << 20) / (1 << 20) / (1 << 20)) +#endif + + + +#ifdef _MSC_VER +#define STBIR__UNUSED_PARAM(v) (void)(v) +#else +#define STBIR__UNUSED_PARAM(v) (void)sizeof(v) +#endif + +// must match stbir_datatype +static unsigned char stbir__type_size[] = { + 1, // STBIR_TYPE_UINT8 + 2, // STBIR_TYPE_UINT16 + 4, // STBIR_TYPE_UINT32 + 4, // STBIR_TYPE_FLOAT +}; + +// Kernel function centered at 0 +typedef float (stbir__kernel_fn)(float x, float scale); +typedef float (stbir__support_fn)(float scale); + +typedef struct +{ + stbir__kernel_fn* kernel; + stbir__support_fn* support; +} stbir__filter_info; + +// When upsampling, the contributors are which source pixels contribute. +// When downsampling, the contributors are which destination pixels are contributed to. +typedef struct +{ + int n0; // First contributing pixel + int n1; // Last contributing pixel +} stbir__contributors; + +typedef struct +{ + const void* input_data; + int input_w; + int input_h; + int input_stride_bytes; + + void* output_data; + int output_w; + int output_h; + int output_stride_bytes; + + float s0, t0, s1, t1; + + float horizontal_shift; // Units: output pixels + float vertical_shift; // Units: output pixels + float horizontal_scale; + float vertical_scale; + + int channels; + int alpha_channel; + stbir_uint32 flags; + stbir_datatype type; + stbir_filter horizontal_filter; + stbir_filter vertical_filter; + stbir_edge edge_horizontal; + stbir_edge edge_vertical; + stbir_colorspace colorspace; + + stbir__contributors* horizontal_contributors; + float* horizontal_coefficients; + + stbir__contributors* vertical_contributors; + float* vertical_coefficients; + + int decode_buffer_pixels; + float* decode_buffer; + + float* horizontal_buffer; + + // cache these because ceil/floor are inexplicably showing up in profile + int horizontal_coefficient_width; + int vertical_coefficient_width; + int horizontal_filter_pixel_width; + int vertical_filter_pixel_width; + int horizontal_filter_pixel_margin; + int vertical_filter_pixel_margin; + int horizontal_num_contributors; + int vertical_num_contributors; + + int ring_buffer_length_bytes; // The length of an individual entry in the ring buffer. The total number of ring buffers is stbir__get_filter_pixel_width(filter) + int ring_buffer_num_entries; // Total number of entries in the ring buffer. + int ring_buffer_first_scanline; + int ring_buffer_last_scanline; + int ring_buffer_begin_index; // first_scanline is at this index in the ring buffer + float* ring_buffer; + + float* encode_buffer; // A temporary buffer to store floats so we don't lose precision while we do multiply-adds. + + int horizontal_contributors_size; + int horizontal_coefficients_size; + int vertical_contributors_size; + int vertical_coefficients_size; + int decode_buffer_size; + int horizontal_buffer_size; + int ring_buffer_size; + int encode_buffer_size; +} stbir__info; + + +static const float stbir__max_uint8_as_float = 255.0f; +static const float stbir__max_uint16_as_float = 65535.0f; +static const double stbir__max_uint32_as_float = 4294967295.0; + + +static stbir__inline int stbir__min(int a, int b) +{ + return a < b ? a : b; +} + +static stbir__inline float stbir__saturate(float x) +{ + if (x < 0) + return 0; + + if (x > 1) + return 1; + + return x; +} + +#ifdef STBIR_SATURATE_INT +static stbir__inline stbir_uint8 stbir__saturate8(int x) +{ + if ((unsigned int) x <= 255) + return x; + + if (x < 0) + return 0; + + return 255; +} + +static stbir__inline stbir_uint16 stbir__saturate16(int x) +{ + if ((unsigned int) x <= 65535) + return x; + + if (x < 0) + return 0; + + return 65535; +} +#endif + +static float stbir__srgb_uchar_to_linear_float[256] = { + 0.000000f, 0.000304f, 0.000607f, 0.000911f, 0.001214f, 0.001518f, 0.001821f, 0.002125f, 0.002428f, 0.002732f, 0.003035f, + 0.003347f, 0.003677f, 0.004025f, 0.004391f, 0.004777f, 0.005182f, 0.005605f, 0.006049f, 0.006512f, 0.006995f, 0.007499f, + 0.008023f, 0.008568f, 0.009134f, 0.009721f, 0.010330f, 0.010960f, 0.011612f, 0.012286f, 0.012983f, 0.013702f, 0.014444f, + 0.015209f, 0.015996f, 0.016807f, 0.017642f, 0.018500f, 0.019382f, 0.020289f, 0.021219f, 0.022174f, 0.023153f, 0.024158f, + 0.025187f, 0.026241f, 0.027321f, 0.028426f, 0.029557f, 0.030713f, 0.031896f, 0.033105f, 0.034340f, 0.035601f, 0.036889f, + 0.038204f, 0.039546f, 0.040915f, 0.042311f, 0.043735f, 0.045186f, 0.046665f, 0.048172f, 0.049707f, 0.051269f, 0.052861f, + 0.054480f, 0.056128f, 0.057805f, 0.059511f, 0.061246f, 0.063010f, 0.064803f, 0.066626f, 0.068478f, 0.070360f, 0.072272f, + 0.074214f, 0.076185f, 0.078187f, 0.080220f, 0.082283f, 0.084376f, 0.086500f, 0.088656f, 0.090842f, 0.093059f, 0.095307f, + 0.097587f, 0.099899f, 0.102242f, 0.104616f, 0.107023f, 0.109462f, 0.111932f, 0.114435f, 0.116971f, 0.119538f, 0.122139f, + 0.124772f, 0.127438f, 0.130136f, 0.132868f, 0.135633f, 0.138432f, 0.141263f, 0.144128f, 0.147027f, 0.149960f, 0.152926f, + 0.155926f, 0.158961f, 0.162029f, 0.165132f, 0.168269f, 0.171441f, 0.174647f, 0.177888f, 0.181164f, 0.184475f, 0.187821f, + 0.191202f, 0.194618f, 0.198069f, 0.201556f, 0.205079f, 0.208637f, 0.212231f, 0.215861f, 0.219526f, 0.223228f, 0.226966f, + 0.230740f, 0.234551f, 0.238398f, 0.242281f, 0.246201f, 0.250158f, 0.254152f, 0.258183f, 0.262251f, 0.266356f, 0.270498f, + 0.274677f, 0.278894f, 0.283149f, 0.287441f, 0.291771f, 0.296138f, 0.300544f, 0.304987f, 0.309469f, 0.313989f, 0.318547f, + 0.323143f, 0.327778f, 0.332452f, 0.337164f, 0.341914f, 0.346704f, 0.351533f, 0.356400f, 0.361307f, 0.366253f, 0.371238f, + 0.376262f, 0.381326f, 0.386430f, 0.391573f, 0.396755f, 0.401978f, 0.407240f, 0.412543f, 0.417885f, 0.423268f, 0.428691f, + 0.434154f, 0.439657f, 0.445201f, 0.450786f, 0.456411f, 0.462077f, 0.467784f, 0.473532f, 0.479320f, 0.485150f, 0.491021f, + 0.496933f, 0.502887f, 0.508881f, 0.514918f, 0.520996f, 0.527115f, 0.533276f, 0.539480f, 0.545725f, 0.552011f, 0.558340f, + 0.564712f, 0.571125f, 0.577581f, 0.584078f, 0.590619f, 0.597202f, 0.603827f, 0.610496f, 0.617207f, 0.623960f, 0.630757f, + 0.637597f, 0.644480f, 0.651406f, 0.658375f, 0.665387f, 0.672443f, 0.679543f, 0.686685f, 0.693872f, 0.701102f, 0.708376f, + 0.715694f, 0.723055f, 0.730461f, 0.737911f, 0.745404f, 0.752942f, 0.760525f, 0.768151f, 0.775822f, 0.783538f, 0.791298f, + 0.799103f, 0.806952f, 0.814847f, 0.822786f, 0.830770f, 0.838799f, 0.846873f, 0.854993f, 0.863157f, 0.871367f, 0.879622f, + 0.887923f, 0.896269f, 0.904661f, 0.913099f, 0.921582f, 0.930111f, 0.938686f, 0.947307f, 0.955974f, 0.964686f, 0.973445f, + 0.982251f, 0.991102f, 1.0f +}; + +static float stbir__srgb_to_linear(float f) +{ + if (f <= 0.04045f) + return f / 12.92f; + else + return (float)pow((f + 0.055f) / 1.055f, 2.4f); +} + +static float stbir__linear_to_srgb(float f) +{ + if (f <= 0.0031308f) + return f * 12.92f; + else + return 1.055f * (float)pow(f, 1 / 2.4f) - 0.055f; +} + +#ifndef STBIR_NON_IEEE_FLOAT +// From https://gist.github.com/rygorous/2203834 + +typedef union +{ + stbir_uint32 u; + float f; +} stbir__FP32; + +static const stbir_uint32 fp32_to_srgb8_tab4[104] = { + 0x0073000d, 0x007a000d, 0x0080000d, 0x0087000d, 0x008d000d, 0x0094000d, 0x009a000d, 0x00a1000d, + 0x00a7001a, 0x00b4001a, 0x00c1001a, 0x00ce001a, 0x00da001a, 0x00e7001a, 0x00f4001a, 0x0101001a, + 0x010e0033, 0x01280033, 0x01410033, 0x015b0033, 0x01750033, 0x018f0033, 0x01a80033, 0x01c20033, + 0x01dc0067, 0x020f0067, 0x02430067, 0x02760067, 0x02aa0067, 0x02dd0067, 0x03110067, 0x03440067, + 0x037800ce, 0x03df00ce, 0x044600ce, 0x04ad00ce, 0x051400ce, 0x057b00c5, 0x05dd00bc, 0x063b00b5, + 0x06970158, 0x07420142, 0x07e30130, 0x087b0120, 0x090b0112, 0x09940106, 0x0a1700fc, 0x0a9500f2, + 0x0b0f01cb, 0x0bf401ae, 0x0ccb0195, 0x0d950180, 0x0e56016e, 0x0f0d015e, 0x0fbc0150, 0x10630143, + 0x11070264, 0x1238023e, 0x1357021d, 0x14660201, 0x156601e9, 0x165a01d3, 0x174401c0, 0x182401af, + 0x18fe0331, 0x1a9602fe, 0x1c1502d2, 0x1d7e02ad, 0x1ed4028d, 0x201a0270, 0x21520256, 0x227d0240, + 0x239f0443, 0x25c003fe, 0x27bf03c4, 0x29a10392, 0x2b6a0367, 0x2d1d0341, 0x2ebe031f, 0x304d0300, + 0x31d105b0, 0x34a80555, 0x37520507, 0x39d504c5, 0x3c37048b, 0x3e7c0458, 0x40a8042a, 0x42bd0401, + 0x44c20798, 0x488e071e, 0x4c1c06b6, 0x4f76065d, 0x52a50610, 0x55ac05cc, 0x5892058f, 0x5b590559, + 0x5e0c0a23, 0x631c0980, 0x67db08f6, 0x6c55087f, 0x70940818, 0x74a007bd, 0x787d076c, 0x7c330723, +}; + +static stbir_uint8 stbir__linear_to_srgb_uchar(float in) +{ + static const stbir__FP32 almostone = { 0x3f7fffff }; // 1-eps + static const stbir__FP32 minval = { (127-13) << 23 }; + stbir_uint32 tab,bias,scale,t; + stbir__FP32 f; + + // Clamp to [2^(-13), 1-eps]; these two values map to 0 and 1, respectively. + // The tests are carefully written so that NaNs map to 0, same as in the reference + // implementation. + if (!(in > minval.f)) // written this way to catch NaNs + in = minval.f; + if (in > almostone.f) + in = almostone.f; + + // Do the table lookup and unpack bias, scale + f.f = in; + tab = fp32_to_srgb8_tab4[(f.u - minval.u) >> 20]; + bias = (tab >> 16) << 9; + scale = tab & 0xffff; + + // Grab next-highest mantissa bits and perform linear interpolation + t = (f.u >> 12) & 0xff; + return (unsigned char) ((bias + scale*t) >> 16); +} + +#else +// sRGB transition values, scaled by 1<<28 +static int stbir__srgb_offset_to_linear_scaled[256] = +{ + 0, 40738, 122216, 203693, 285170, 366648, 448125, 529603, + 611080, 692557, 774035, 855852, 942009, 1033024, 1128971, 1229926, + 1335959, 1447142, 1563542, 1685229, 1812268, 1944725, 2082664, 2226148, + 2375238, 2529996, 2690481, 2856753, 3028870, 3206888, 3390865, 3580856, + 3776916, 3979100, 4187460, 4402049, 4622919, 4850123, 5083710, 5323731, + 5570236, 5823273, 6082892, 6349140, 6622065, 6901714, 7188133, 7481369, + 7781466, 8088471, 8402427, 8723380, 9051372, 9386448, 9728650, 10078021, + 10434603, 10798439, 11169569, 11548036, 11933879, 12327139, 12727857, 13136073, + 13551826, 13975156, 14406100, 14844697, 15290987, 15745007, 16206795, 16676389, + 17153826, 17639142, 18132374, 18633560, 19142734, 19659934, 20185196, 20718552, + 21260042, 21809696, 22367554, 22933648, 23508010, 24090680, 24681686, 25281066, + 25888850, 26505076, 27129772, 27762974, 28404716, 29055026, 29713942, 30381490, + 31057708, 31742624, 32436272, 33138682, 33849884, 34569912, 35298800, 36036568, + 36783260, 37538896, 38303512, 39077136, 39859796, 40651528, 41452360, 42262316, + 43081432, 43909732, 44747252, 45594016, 46450052, 47315392, 48190064, 49074096, + 49967516, 50870356, 51782636, 52704392, 53635648, 54576432, 55526772, 56486700, + 57456236, 58435408, 59424248, 60422780, 61431036, 62449032, 63476804, 64514376, + 65561776, 66619028, 67686160, 68763192, 69850160, 70947088, 72053992, 73170912, + 74297864, 75434880, 76581976, 77739184, 78906536, 80084040, 81271736, 82469648, + 83677792, 84896192, 86124888, 87363888, 88613232, 89872928, 91143016, 92423512, + 93714432, 95015816, 96327688, 97650056, 98982952, 100326408, 101680440, 103045072, + 104420320, 105806224, 107202800, 108610064, 110028048, 111456776, 112896264, 114346544, + 115807632, 117279552, 118762328, 120255976, 121760536, 123276016, 124802440, 126339832, + 127888216, 129447616, 131018048, 132599544, 134192112, 135795792, 137410592, 139036528, + 140673648, 142321952, 143981456, 145652208, 147334208, 149027488, 150732064, 152447968, + 154175200, 155913792, 157663776, 159425168, 161197984, 162982240, 164777968, 166585184, + 168403904, 170234160, 172075968, 173929344, 175794320, 177670896, 179559120, 181458992, + 183370528, 185293776, 187228736, 189175424, 191133888, 193104112, 195086128, 197079968, + 199085648, 201103184, 203132592, 205173888, 207227120, 209292272, 211369392, 213458480, + 215559568, 217672656, 219797792, 221934976, 224084240, 226245600, 228419056, 230604656, + 232802400, 235012320, 237234432, 239468736, 241715280, 243974080, 246245120, 248528464, + 250824112, 253132064, 255452368, 257785040, 260130080, 262487520, 264857376, 267239664, +}; + +static stbir_uint8 stbir__linear_to_srgb_uchar(float f) +{ + int x = (int) (f * (1 << 28)); // has headroom so you don't need to clamp + int v = 0; + int i; + + // Refine the guess with a short binary search. + i = v + 128; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 64; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 32; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 16; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 8; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 4; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 2; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + i = v + 1; if (x >= stbir__srgb_offset_to_linear_scaled[i]) v = i; + + return (stbir_uint8) v; +} +#endif + +static float stbir__filter_trapezoid(float x, float scale) +{ + float halfscale = scale / 2; + float t = 0.5f + halfscale; + STBIR_ASSERT(scale <= 1); + + x = (float)fabs(x); + + if (x >= t) + return 0; + else + { + float r = 0.5f - halfscale; + if (x <= r) + return 1; + else + return (t - x) / scale; + } +} + +static float stbir__support_trapezoid(float scale) +{ + STBIR_ASSERT(scale <= 1); + return 0.5f + scale / 2; +} + +static float stbir__filter_triangle(float x, float s) +{ + STBIR__UNUSED_PARAM(s); + + x = (float)fabs(x); + + if (x <= 1.0f) + return 1 - x; + else + return 0; +} + +static float stbir__filter_cubic(float x, float s) +{ + STBIR__UNUSED_PARAM(s); + + x = (float)fabs(x); + + if (x < 1.0f) + return (4 + x*x*(3*x - 6))/6; + else if (x < 2.0f) + return (8 + x*(-12 + x*(6 - x)))/6; + + return (0.0f); +} + +static float stbir__filter_catmullrom(float x, float s) +{ + STBIR__UNUSED_PARAM(s); + + x = (float)fabs(x); + + if (x < 1.0f) + return 1 - x*x*(2.5f - 1.5f*x); + else if (x < 2.0f) + return 2 - x*(4 + x*(0.5f*x - 2.5f)); + + return (0.0f); +} + +static float stbir__filter_mitchell(float x, float s) +{ + STBIR__UNUSED_PARAM(s); + + x = (float)fabs(x); + + if (x < 1.0f) + return (16 + x*x*(21 * x - 36))/18; + else if (x < 2.0f) + return (32 + x*(-60 + x*(36 - 7*x)))/18; + + return (0.0f); +} + +static float stbir__support_zero(float s) +{ + STBIR__UNUSED_PARAM(s); + return 0; +} + +static float stbir__support_one(float s) +{ + STBIR__UNUSED_PARAM(s); + return 1; +} + +static float stbir__support_two(float s) +{ + STBIR__UNUSED_PARAM(s); + return 2; +} + +static stbir__filter_info stbir__filter_info_table[] = { + { NULL, stbir__support_zero }, + { stbir__filter_trapezoid, stbir__support_trapezoid }, + { stbir__filter_triangle, stbir__support_one }, + { stbir__filter_cubic, stbir__support_two }, + { stbir__filter_catmullrom, stbir__support_two }, + { stbir__filter_mitchell, stbir__support_two }, +}; + +stbir__inline static int stbir__use_upsampling(float ratio) +{ + return ratio > 1; +} + +stbir__inline static int stbir__use_width_upsampling(stbir__info* stbir_info) +{ + return stbir__use_upsampling(stbir_info->horizontal_scale); +} + +stbir__inline static int stbir__use_height_upsampling(stbir__info* stbir_info) +{ + return stbir__use_upsampling(stbir_info->vertical_scale); +} + +// This is the maximum number of input samples that can affect an output sample +// with the given filter +static int stbir__get_filter_pixel_width(stbir_filter filter, float scale) +{ + STBIR_ASSERT(filter != 0); + STBIR_ASSERT(filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); + + if (stbir__use_upsampling(scale)) + return (int)ceil(stbir__filter_info_table[filter].support(1/scale) * 2); + else + return (int)ceil(stbir__filter_info_table[filter].support(scale) * 2 / scale); +} + +// This is how much to expand buffers to account for filters seeking outside +// the image boundaries. +static int stbir__get_filter_pixel_margin(stbir_filter filter, float scale) +{ + return stbir__get_filter_pixel_width(filter, scale) / 2; +} + +static int stbir__get_coefficient_width(stbir_filter filter, float scale) +{ + if (stbir__use_upsampling(scale)) + return (int)ceil(stbir__filter_info_table[filter].support(1 / scale) * 2); + else + return (int)ceil(stbir__filter_info_table[filter].support(scale) * 2); +} + +static int stbir__get_contributors(float scale, stbir_filter filter, int input_size, int output_size) +{ + if (stbir__use_upsampling(scale)) + return output_size; + else + return (input_size + stbir__get_filter_pixel_margin(filter, scale) * 2); +} + +static int stbir__get_total_horizontal_coefficients(stbir__info* info) +{ + return info->horizontal_num_contributors + * stbir__get_coefficient_width (info->horizontal_filter, info->horizontal_scale); +} + +static int stbir__get_total_vertical_coefficients(stbir__info* info) +{ + return info->vertical_num_contributors + * stbir__get_coefficient_width (info->vertical_filter, info->vertical_scale); +} + +static stbir__contributors* stbir__get_contributor(stbir__contributors* contributors, int n) +{ + return &contributors[n]; +} + +// For perf reasons this code is duplicated in stbir__resample_horizontal_upsample/downsample, +// if you change it here change it there too. +static float* stbir__get_coefficient(float* coefficients, stbir_filter filter, float scale, int n, int c) +{ + int width = stbir__get_coefficient_width(filter, scale); + return &coefficients[width*n + c]; +} + +static int stbir__edge_wrap_slow(stbir_edge edge, int n, int max) +{ + switch (edge) + { + case STBIR_EDGE_ZERO: + return 0; // we'll decode the wrong pixel here, and then overwrite with 0s later + + case STBIR_EDGE_CLAMP: + if (n < 0) + return 0; + + if (n >= max) + return max - 1; + + return n; // NOTREACHED + + case STBIR_EDGE_REFLECT: + { + if (n < 0) + { + if (n < max) + return -n; + else + return max - 1; + } + + if (n >= max) + { + int max2 = max * 2; + if (n >= max2) + return 0; + else + return max2 - n - 1; + } + + return n; // NOTREACHED + } + + case STBIR_EDGE_WRAP: + if (n >= 0) + return (n % max); + else + { + int m = (-n) % max; + + if (m != 0) + m = max - m; + + return (m); + } + // NOTREACHED + + default: + STBIR_ASSERT(!"Unimplemented edge type"); + return 0; + } +} + +stbir__inline static int stbir__edge_wrap(stbir_edge edge, int n, int max) +{ + // avoid per-pixel switch + if (n >= 0 && n < max) + return n; + return stbir__edge_wrap_slow(edge, n, max); +} + +// What input pixels contribute to this output pixel? +static void stbir__calculate_sample_range_upsample(int n, float out_filter_radius, float scale_ratio, float out_shift, int* in_first_pixel, int* in_last_pixel, float* in_center_of_out) +{ + float out_pixel_center = (float)n + 0.5f; + float out_pixel_influence_lowerbound = out_pixel_center - out_filter_radius; + float out_pixel_influence_upperbound = out_pixel_center + out_filter_radius; + + float in_pixel_influence_lowerbound = (out_pixel_influence_lowerbound + out_shift) / scale_ratio; + float in_pixel_influence_upperbound = (out_pixel_influence_upperbound + out_shift) / scale_ratio; + + *in_center_of_out = (out_pixel_center + out_shift) / scale_ratio; + *in_first_pixel = (int)(floor(in_pixel_influence_lowerbound + 0.5)); + *in_last_pixel = (int)(floor(in_pixel_influence_upperbound - 0.5)); +} + +// What output pixels does this input pixel contribute to? +static void stbir__calculate_sample_range_downsample(int n, float in_pixels_radius, float scale_ratio, float out_shift, int* out_first_pixel, int* out_last_pixel, float* out_center_of_in) +{ + float in_pixel_center = (float)n + 0.5f; + float in_pixel_influence_lowerbound = in_pixel_center - in_pixels_radius; + float in_pixel_influence_upperbound = in_pixel_center + in_pixels_radius; + + float out_pixel_influence_lowerbound = in_pixel_influence_lowerbound * scale_ratio - out_shift; + float out_pixel_influence_upperbound = in_pixel_influence_upperbound * scale_ratio - out_shift; + + *out_center_of_in = in_pixel_center * scale_ratio - out_shift; + *out_first_pixel = (int)(floor(out_pixel_influence_lowerbound + 0.5)); + *out_last_pixel = (int)(floor(out_pixel_influence_upperbound - 0.5)); +} + +static void stbir__calculate_coefficients_upsample(stbir_filter filter, float scale, int in_first_pixel, int in_last_pixel, float in_center_of_out, stbir__contributors* contributor, float* coefficient_group) +{ + int i; + float total_filter = 0; + float filter_scale; + + STBIR_ASSERT(in_last_pixel - in_first_pixel <= (int)ceil(stbir__filter_info_table[filter].support(1/scale) * 2)); // Taken directly from stbir__get_coefficient_width() which we can't call because we don't know if we're horizontal or vertical. + + contributor->n0 = in_first_pixel; + contributor->n1 = in_last_pixel; + + STBIR_ASSERT(contributor->n1 >= contributor->n0); + + for (i = 0; i <= in_last_pixel - in_first_pixel; i++) + { + float in_pixel_center = (float)(i + in_first_pixel) + 0.5f; + coefficient_group[i] = stbir__filter_info_table[filter].kernel(in_center_of_out - in_pixel_center, 1 / scale); + + // If the coefficient is zero, skip it. (Don't do the <0 check here, we want the influence of those outside pixels.) + if (i == 0 && !coefficient_group[i]) + { + contributor->n0 = ++in_first_pixel; + i--; + continue; + } + + total_filter += coefficient_group[i]; + } + + STBIR_ASSERT(stbir__filter_info_table[filter].kernel((float)(in_last_pixel + 1) + 0.5f - in_center_of_out, 1/scale) == 0); + + STBIR_ASSERT(total_filter > 0.9); + STBIR_ASSERT(total_filter < 1.1f); // Make sure it's not way off. + + // Make sure the sum of all coefficients is 1. + filter_scale = 1 / total_filter; + + for (i = 0; i <= in_last_pixel - in_first_pixel; i++) + coefficient_group[i] *= filter_scale; + + for (i = in_last_pixel - in_first_pixel; i >= 0; i--) + { + if (coefficient_group[i]) + break; + + // This line has no weight. We can skip it. + contributor->n1 = contributor->n0 + i - 1; + } +} + +static void stbir__calculate_coefficients_downsample(stbir_filter filter, float scale_ratio, int out_first_pixel, int out_last_pixel, float out_center_of_in, stbir__contributors* contributor, float* coefficient_group) +{ + int i; + + STBIR_ASSERT(out_last_pixel - out_first_pixel <= (int)ceil(stbir__filter_info_table[filter].support(scale_ratio) * 2)); // Taken directly from stbir__get_coefficient_width() which we can't call because we don't know if we're horizontal or vertical. + + contributor->n0 = out_first_pixel; + contributor->n1 = out_last_pixel; + + STBIR_ASSERT(contributor->n1 >= contributor->n0); + + for (i = 0; i <= out_last_pixel - out_first_pixel; i++) + { + float out_pixel_center = (float)(i + out_first_pixel) + 0.5f; + float x = out_pixel_center - out_center_of_in; + coefficient_group[i] = stbir__filter_info_table[filter].kernel(x, scale_ratio) * scale_ratio; + } + + STBIR_ASSERT(stbir__filter_info_table[filter].kernel((float)(out_last_pixel + 1) + 0.5f - out_center_of_in, scale_ratio) == 0); + + for (i = out_last_pixel - out_first_pixel; i >= 0; i--) + { + if (coefficient_group[i]) + break; + + // This line has no weight. We can skip it. + contributor->n1 = contributor->n0 + i - 1; + } +} + +static void stbir__normalize_downsample_coefficients(stbir__contributors* contributors, float* coefficients, stbir_filter filter, float scale_ratio, int input_size, int output_size) +{ + int num_contributors = stbir__get_contributors(scale_ratio, filter, input_size, output_size); + int num_coefficients = stbir__get_coefficient_width(filter, scale_ratio); + int i, j; + int skip; + + for (i = 0; i < output_size; i++) + { + float scale; + float total = 0; + + for (j = 0; j < num_contributors; j++) + { + if (i >= contributors[j].n0 && i <= contributors[j].n1) + { + float coefficient = *stbir__get_coefficient(coefficients, filter, scale_ratio, j, i - contributors[j].n0); + total += coefficient; + } + else if (i < contributors[j].n0) + break; + } + + STBIR_ASSERT(total > 0.9f); + STBIR_ASSERT(total < 1.1f); + + scale = 1 / total; + + for (j = 0; j < num_contributors; j++) + { + if (i >= contributors[j].n0 && i <= contributors[j].n1) + *stbir__get_coefficient(coefficients, filter, scale_ratio, j, i - contributors[j].n0) *= scale; + else if (i < contributors[j].n0) + break; + } + } + + // Optimize: Skip zero coefficients and contributions outside of image bounds. + // Do this after normalizing because normalization depends on the n0/n1 values. + for (j = 0; j < num_contributors; j++) + { + int range, max, width; + + skip = 0; + while (*stbir__get_coefficient(coefficients, filter, scale_ratio, j, skip) == 0) + skip++; + + contributors[j].n0 += skip; + + while (contributors[j].n0 < 0) + { + contributors[j].n0++; + skip++; + } + + range = contributors[j].n1 - contributors[j].n0 + 1; + max = stbir__min(num_coefficients, range); + + width = stbir__get_coefficient_width(filter, scale_ratio); + for (i = 0; i < max; i++) + { + if (i + skip >= width) + break; + + *stbir__get_coefficient(coefficients, filter, scale_ratio, j, i) = *stbir__get_coefficient(coefficients, filter, scale_ratio, j, i + skip); + } + + continue; + } + + // Using min to avoid writing into invalid pixels. + for (i = 0; i < num_contributors; i++) + contributors[i].n1 = stbir__min(contributors[i].n1, output_size - 1); +} + +// Each scan line uses the same kernel values so we should calculate the kernel +// values once and then we can use them for every scan line. +static void stbir__calculate_filters(stbir__contributors* contributors, float* coefficients, stbir_filter filter, float scale_ratio, float shift, int input_size, int output_size) +{ + int n; + int total_contributors = stbir__get_contributors(scale_ratio, filter, input_size, output_size); + + if (stbir__use_upsampling(scale_ratio)) + { + float out_pixels_radius = stbir__filter_info_table[filter].support(1 / scale_ratio) * scale_ratio; + + // Looping through out pixels + for (n = 0; n < total_contributors; n++) + { + float in_center_of_out; // Center of the current out pixel in the in pixel space + int in_first_pixel, in_last_pixel; + + stbir__calculate_sample_range_upsample(n, out_pixels_radius, scale_ratio, shift, &in_first_pixel, &in_last_pixel, &in_center_of_out); + + stbir__calculate_coefficients_upsample(filter, scale_ratio, in_first_pixel, in_last_pixel, in_center_of_out, stbir__get_contributor(contributors, n), stbir__get_coefficient(coefficients, filter, scale_ratio, n, 0)); + } + } + else + { + float in_pixels_radius = stbir__filter_info_table[filter].support(scale_ratio) / scale_ratio; + + // Looping through in pixels + for (n = 0; n < total_contributors; n++) + { + float out_center_of_in; // Center of the current out pixel in the in pixel space + int out_first_pixel, out_last_pixel; + int n_adjusted = n - stbir__get_filter_pixel_margin(filter, scale_ratio); + + stbir__calculate_sample_range_downsample(n_adjusted, in_pixels_radius, scale_ratio, shift, &out_first_pixel, &out_last_pixel, &out_center_of_in); + + stbir__calculate_coefficients_downsample(filter, scale_ratio, out_first_pixel, out_last_pixel, out_center_of_in, stbir__get_contributor(contributors, n), stbir__get_coefficient(coefficients, filter, scale_ratio, n, 0)); + } + + stbir__normalize_downsample_coefficients(contributors, coefficients, filter, scale_ratio, input_size, output_size); + } +} + +static float* stbir__get_decode_buffer(stbir__info* stbir_info) +{ + // The 0 index of the decode buffer starts after the margin. This makes + // it okay to use negative indexes on the decode buffer. + return &stbir_info->decode_buffer[stbir_info->horizontal_filter_pixel_margin * stbir_info->channels]; +} + +#define STBIR__DECODE(type, colorspace) ((int)(type) * (STBIR_MAX_COLORSPACES) + (int)(colorspace)) + +static void stbir__decode_scanline(stbir__info* stbir_info, int n) +{ + int c; + int channels = stbir_info->channels; + int alpha_channel = stbir_info->alpha_channel; + int type = stbir_info->type; + int colorspace = stbir_info->colorspace; + int input_w = stbir_info->input_w; + size_t input_stride_bytes = stbir_info->input_stride_bytes; + float* decode_buffer = stbir__get_decode_buffer(stbir_info); + stbir_edge edge_horizontal = stbir_info->edge_horizontal; + stbir_edge edge_vertical = stbir_info->edge_vertical; + size_t in_buffer_row_offset = stbir__edge_wrap(edge_vertical, n, stbir_info->input_h) * input_stride_bytes; + const void* input_data = (char *) stbir_info->input_data + in_buffer_row_offset; + int max_x = input_w + stbir_info->horizontal_filter_pixel_margin; + int decode = STBIR__DECODE(type, colorspace); + + int x = -stbir_info->horizontal_filter_pixel_margin; + + // special handling for STBIR_EDGE_ZERO because it needs to return an item that doesn't appear in the input, + // and we want to avoid paying overhead on every pixel if not STBIR_EDGE_ZERO + if (edge_vertical == STBIR_EDGE_ZERO && (n < 0 || n >= stbir_info->input_h)) + { + for (; x < max_x; x++) + for (c = 0; c < channels; c++) + decode_buffer[x*channels + c] = 0; + return; + } + + switch (decode) + { + case STBIR__DECODE(STBIR_TYPE_UINT8, STBIR_COLORSPACE_LINEAR): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = ((float)((const unsigned char*)input_data)[input_pixel_index + c]) / stbir__max_uint8_as_float; + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT8, STBIR_COLORSPACE_SRGB): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = stbir__srgb_uchar_to_linear_float[((const unsigned char*)input_data)[input_pixel_index + c]]; + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + decode_buffer[decode_pixel_index + alpha_channel] = ((float)((const unsigned char*)input_data)[input_pixel_index + alpha_channel]) / stbir__max_uint8_as_float; + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT16, STBIR_COLORSPACE_LINEAR): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = ((float)((const unsigned short*)input_data)[input_pixel_index + c]) / stbir__max_uint16_as_float; + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT16, STBIR_COLORSPACE_SRGB): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = stbir__srgb_to_linear(((float)((const unsigned short*)input_data)[input_pixel_index + c]) / stbir__max_uint16_as_float); + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + decode_buffer[decode_pixel_index + alpha_channel] = ((float)((const unsigned short*)input_data)[input_pixel_index + alpha_channel]) / stbir__max_uint16_as_float; + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT32, STBIR_COLORSPACE_LINEAR): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = (float)(((double)((const unsigned int*)input_data)[input_pixel_index + c]) / stbir__max_uint32_as_float); + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT32, STBIR_COLORSPACE_SRGB): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = stbir__srgb_to_linear((float)(((double)((const unsigned int*)input_data)[input_pixel_index + c]) / stbir__max_uint32_as_float)); + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + decode_buffer[decode_pixel_index + alpha_channel] = (float)(((double)((const unsigned int*)input_data)[input_pixel_index + alpha_channel]) / stbir__max_uint32_as_float); + } + break; + + case STBIR__DECODE(STBIR_TYPE_FLOAT, STBIR_COLORSPACE_LINEAR): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = ((const float*)input_data)[input_pixel_index + c]; + } + break; + + case STBIR__DECODE(STBIR_TYPE_FLOAT, STBIR_COLORSPACE_SRGB): + for (; x < max_x; x++) + { + int decode_pixel_index = x * channels; + int input_pixel_index = stbir__edge_wrap(edge_horizontal, x, input_w) * channels; + for (c = 0; c < channels; c++) + decode_buffer[decode_pixel_index + c] = stbir__srgb_to_linear(((const float*)input_data)[input_pixel_index + c]); + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + decode_buffer[decode_pixel_index + alpha_channel] = ((const float*)input_data)[input_pixel_index + alpha_channel]; + } + + break; + + default: + STBIR_ASSERT(!"Unknown type/colorspace/channels combination."); + break; + } + + if (!(stbir_info->flags & STBIR_FLAG_ALPHA_PREMULTIPLIED)) + { + for (x = -stbir_info->horizontal_filter_pixel_margin; x < max_x; x++) + { + int decode_pixel_index = x * channels; + + // If the alpha value is 0 it will clobber the color values. Make sure it's not. + float alpha = decode_buffer[decode_pixel_index + alpha_channel]; +#ifndef STBIR_NO_ALPHA_EPSILON + if (stbir_info->type != STBIR_TYPE_FLOAT) { + alpha += STBIR_ALPHA_EPSILON; + decode_buffer[decode_pixel_index + alpha_channel] = alpha; + } +#endif + for (c = 0; c < channels; c++) + { + if (c == alpha_channel) + continue; + + decode_buffer[decode_pixel_index + c] *= alpha; + } + } + } + + if (edge_horizontal == STBIR_EDGE_ZERO) + { + for (x = -stbir_info->horizontal_filter_pixel_margin; x < 0; x++) + { + for (c = 0; c < channels; c++) + decode_buffer[x*channels + c] = 0; + } + for (x = input_w; x < max_x; x++) + { + for (c = 0; c < channels; c++) + decode_buffer[x*channels + c] = 0; + } + } +} + +static float* stbir__get_ring_buffer_entry(float* ring_buffer, int index, int ring_buffer_length) +{ + return &ring_buffer[index * ring_buffer_length]; +} + +static float* stbir__add_empty_ring_buffer_entry(stbir__info* stbir_info, int n) +{ + int ring_buffer_index; + float* ring_buffer; + + stbir_info->ring_buffer_last_scanline = n; + + if (stbir_info->ring_buffer_begin_index < 0) + { + ring_buffer_index = stbir_info->ring_buffer_begin_index = 0; + stbir_info->ring_buffer_first_scanline = n; + } + else + { + ring_buffer_index = (stbir_info->ring_buffer_begin_index + (stbir_info->ring_buffer_last_scanline - stbir_info->ring_buffer_first_scanline)) % stbir_info->ring_buffer_num_entries; + STBIR_ASSERT(ring_buffer_index != stbir_info->ring_buffer_begin_index); + } + + ring_buffer = stbir__get_ring_buffer_entry(stbir_info->ring_buffer, ring_buffer_index, stbir_info->ring_buffer_length_bytes / sizeof(float)); + memset(ring_buffer, 0, stbir_info->ring_buffer_length_bytes); + + return ring_buffer; +} + + +static void stbir__resample_horizontal_upsample(stbir__info* stbir_info, float* output_buffer) +{ + int x, k; + int output_w = stbir_info->output_w; + int channels = stbir_info->channels; + float* decode_buffer = stbir__get_decode_buffer(stbir_info); + stbir__contributors* horizontal_contributors = stbir_info->horizontal_contributors; + float* horizontal_coefficients = stbir_info->horizontal_coefficients; + int coefficient_width = stbir_info->horizontal_coefficient_width; + + for (x = 0; x < output_w; x++) + { + int n0 = horizontal_contributors[x].n0; + int n1 = horizontal_contributors[x].n1; + + int out_pixel_index = x * channels; + int coefficient_group = coefficient_width * x; + int coefficient_counter = 0; + + STBIR_ASSERT(n1 >= n0); + STBIR_ASSERT(n0 >= -stbir_info->horizontal_filter_pixel_margin); + STBIR_ASSERT(n1 >= -stbir_info->horizontal_filter_pixel_margin); + STBIR_ASSERT(n0 < stbir_info->input_w + stbir_info->horizontal_filter_pixel_margin); + STBIR_ASSERT(n1 < stbir_info->input_w + stbir_info->horizontal_filter_pixel_margin); + + switch (channels) { + case 1: + for (k = n0; k <= n1; k++) + { + int in_pixel_index = k * 1; + float coefficient = horizontal_coefficients[coefficient_group + coefficient_counter++]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + } + break; + case 2: + for (k = n0; k <= n1; k++) + { + int in_pixel_index = k * 2; + float coefficient = horizontal_coefficients[coefficient_group + coefficient_counter++]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient; + } + break; + case 3: + for (k = n0; k <= n1; k++) + { + int in_pixel_index = k * 3; + float coefficient = horizontal_coefficients[coefficient_group + coefficient_counter++]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient; + output_buffer[out_pixel_index + 2] += decode_buffer[in_pixel_index + 2] * coefficient; + } + break; + case 4: + for (k = n0; k <= n1; k++) + { + int in_pixel_index = k * 4; + float coefficient = horizontal_coefficients[coefficient_group + coefficient_counter++]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient; + output_buffer[out_pixel_index + 2] += decode_buffer[in_pixel_index + 2] * coefficient; + output_buffer[out_pixel_index + 3] += decode_buffer[in_pixel_index + 3] * coefficient; + } + break; + default: + for (k = n0; k <= n1; k++) + { + int in_pixel_index = k * channels; + float coefficient = horizontal_coefficients[coefficient_group + coefficient_counter++]; + int c; + STBIR_ASSERT(coefficient != 0); + for (c = 0; c < channels; c++) + output_buffer[out_pixel_index + c] += decode_buffer[in_pixel_index + c] * coefficient; + } + break; + } + } +} + +static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, float* output_buffer) +{ + int x, k; + int input_w = stbir_info->input_w; + int channels = stbir_info->channels; + float* decode_buffer = stbir__get_decode_buffer(stbir_info); + stbir__contributors* horizontal_contributors = stbir_info->horizontal_contributors; + float* horizontal_coefficients = stbir_info->horizontal_coefficients; + int coefficient_width = stbir_info->horizontal_coefficient_width; + int filter_pixel_margin = stbir_info->horizontal_filter_pixel_margin; + int max_x = input_w + filter_pixel_margin * 2; + + STBIR_ASSERT(!stbir__use_width_upsampling(stbir_info)); + + switch (channels) { + case 1: + for (x = 0; x < max_x; x++) + { + int n0 = horizontal_contributors[x].n0; + int n1 = horizontal_contributors[x].n1; + + int in_x = x - filter_pixel_margin; + int in_pixel_index = in_x * 1; + int max_n = n1; + int coefficient_group = coefficient_width * x; + + for (k = n0; k <= max_n; k++) + { + int out_pixel_index = k * 1; + float coefficient = horizontal_coefficients[coefficient_group + k - n0]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + } + } + break; + + case 2: + for (x = 0; x < max_x; x++) + { + int n0 = horizontal_contributors[x].n0; + int n1 = horizontal_contributors[x].n1; + + int in_x = x - filter_pixel_margin; + int in_pixel_index = in_x * 2; + int max_n = n1; + int coefficient_group = coefficient_width * x; + + for (k = n0; k <= max_n; k++) + { + int out_pixel_index = k * 2; + float coefficient = horizontal_coefficients[coefficient_group + k - n0]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient; + } + } + break; + + case 3: + for (x = 0; x < max_x; x++) + { + int n0 = horizontal_contributors[x].n0; + int n1 = horizontal_contributors[x].n1; + + int in_x = x - filter_pixel_margin; + int in_pixel_index = in_x * 3; + int max_n = n1; + int coefficient_group = coefficient_width * x; + + for (k = n0; k <= max_n; k++) + { + int out_pixel_index = k * 3; + float coefficient = horizontal_coefficients[coefficient_group + k - n0]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient; + output_buffer[out_pixel_index + 2] += decode_buffer[in_pixel_index + 2] * coefficient; + } + } + break; + + case 4: + for (x = 0; x < max_x; x++) + { + int n0 = horizontal_contributors[x].n0; + int n1 = horizontal_contributors[x].n1; + + int in_x = x - filter_pixel_margin; + int in_pixel_index = in_x * 4; + int max_n = n1; + int coefficient_group = coefficient_width * x; + + for (k = n0; k <= max_n; k++) + { + int out_pixel_index = k * 4; + float coefficient = horizontal_coefficients[coefficient_group + k - n0]; + STBIR_ASSERT(coefficient != 0); + output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient; + output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient; + output_buffer[out_pixel_index + 2] += decode_buffer[in_pixel_index + 2] * coefficient; + output_buffer[out_pixel_index + 3] += decode_buffer[in_pixel_index + 3] * coefficient; + } + } + break; + + default: + for (x = 0; x < max_x; x++) + { + int n0 = horizontal_contributors[x].n0; + int n1 = horizontal_contributors[x].n1; + + int in_x = x - filter_pixel_margin; + int in_pixel_index = in_x * channels; + int max_n = n1; + int coefficient_group = coefficient_width * x; + + for (k = n0; k <= max_n; k++) + { + int c; + int out_pixel_index = k * channels; + float coefficient = horizontal_coefficients[coefficient_group + k - n0]; + STBIR_ASSERT(coefficient != 0); + for (c = 0; c < channels; c++) + output_buffer[out_pixel_index + c] += decode_buffer[in_pixel_index + c] * coefficient; + } + } + break; + } +} + +static void stbir__decode_and_resample_upsample(stbir__info* stbir_info, int n) +{ + // Decode the nth scanline from the source image into the decode buffer. + stbir__decode_scanline(stbir_info, n); + + // Now resample it into the ring buffer. + if (stbir__use_width_upsampling(stbir_info)) + stbir__resample_horizontal_upsample(stbir_info, stbir__add_empty_ring_buffer_entry(stbir_info, n)); + else + stbir__resample_horizontal_downsample(stbir_info, stbir__add_empty_ring_buffer_entry(stbir_info, n)); + + // Now it's sitting in the ring buffer ready to be used as source for the vertical sampling. +} + +static void stbir__decode_and_resample_downsample(stbir__info* stbir_info, int n) +{ + // Decode the nth scanline from the source image into the decode buffer. + stbir__decode_scanline(stbir_info, n); + + memset(stbir_info->horizontal_buffer, 0, stbir_info->output_w * stbir_info->channels * sizeof(float)); + + // Now resample it into the horizontal buffer. + if (stbir__use_width_upsampling(stbir_info)) + stbir__resample_horizontal_upsample(stbir_info, stbir_info->horizontal_buffer); + else + stbir__resample_horizontal_downsample(stbir_info, stbir_info->horizontal_buffer); + + // Now it's sitting in the horizontal buffer ready to be distributed into the ring buffers. +} + +// Get the specified scan line from the ring buffer. +static float* stbir__get_ring_buffer_scanline(int get_scanline, float* ring_buffer, int begin_index, int first_scanline, int ring_buffer_num_entries, int ring_buffer_length) +{ + int ring_buffer_index = (begin_index + (get_scanline - first_scanline)) % ring_buffer_num_entries; + return stbir__get_ring_buffer_entry(ring_buffer, ring_buffer_index, ring_buffer_length); +} + + +static void stbir__encode_scanline(stbir__info* stbir_info, int num_pixels, void *output_buffer, float *encode_buffer, int channels, int alpha_channel, int decode) +{ + int x; + int n; + int num_nonalpha; + stbir_uint16 nonalpha[STBIR_MAX_CHANNELS]; + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_PREMULTIPLIED)) + { + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + float alpha = encode_buffer[pixel_index + alpha_channel]; + float reciprocal_alpha = alpha ? 1.0f / alpha : 0; + + // unrolling this produced a 1% slowdown upscaling a large RGBA linear-space image on my machine - stb + for (n = 0; n < channels; n++) + if (n != alpha_channel) + encode_buffer[pixel_index + n] *= reciprocal_alpha; + + // We added in a small epsilon to prevent the color channel from being deleted with zero alpha. + // Because we only add it for integer types, it will automatically be discarded on integer + // conversion, so we don't need to subtract it back out (which would be problematic for + // numeric precision reasons). + } + } + + // build a table of all channels that need colorspace correction, so + // we don't perform colorspace correction on channels that don't need it. + for (x = 0, num_nonalpha = 0; x < channels; ++x) + { + if (x != alpha_channel || (stbir_info->flags & STBIR_FLAG_ALPHA_USES_COLORSPACE)) + { + nonalpha[num_nonalpha++] = (stbir_uint16)x; + } + } + + #define STBIR__ROUND_INT(f) ((int) ((f)+0.5)) + #define STBIR__ROUND_UINT(f) ((stbir_uint32) ((f)+0.5)) + + #ifdef STBIR__SATURATE_INT + #define STBIR__ENCODE_LINEAR8(f) stbir__saturate8 (STBIR__ROUND_INT((f) * stbir__max_uint8_as_float )) + #define STBIR__ENCODE_LINEAR16(f) stbir__saturate16(STBIR__ROUND_INT((f) * stbir__max_uint16_as_float)) + #else + #define STBIR__ENCODE_LINEAR8(f) (unsigned char ) STBIR__ROUND_INT(stbir__saturate(f) * stbir__max_uint8_as_float ) + #define STBIR__ENCODE_LINEAR16(f) (unsigned short) STBIR__ROUND_INT(stbir__saturate(f) * stbir__max_uint16_as_float) + #endif + + switch (decode) + { + case STBIR__DECODE(STBIR_TYPE_UINT8, STBIR_COLORSPACE_LINEAR): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < channels; n++) + { + int index = pixel_index + n; + ((unsigned char*)output_buffer)[index] = STBIR__ENCODE_LINEAR8(encode_buffer[index]); + } + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT8, STBIR_COLORSPACE_SRGB): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < num_nonalpha; n++) + { + int index = pixel_index + nonalpha[n]; + ((unsigned char*)output_buffer)[index] = stbir__linear_to_srgb_uchar(encode_buffer[index]); + } + + if (!(stbir_info->flags & STBIR_FLAG_ALPHA_USES_COLORSPACE)) + ((unsigned char *)output_buffer)[pixel_index + alpha_channel] = STBIR__ENCODE_LINEAR8(encode_buffer[pixel_index+alpha_channel]); + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT16, STBIR_COLORSPACE_LINEAR): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < channels; n++) + { + int index = pixel_index + n; + ((unsigned short*)output_buffer)[index] = STBIR__ENCODE_LINEAR16(encode_buffer[index]); + } + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT16, STBIR_COLORSPACE_SRGB): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < num_nonalpha; n++) + { + int index = pixel_index + nonalpha[n]; + ((unsigned short*)output_buffer)[index] = (unsigned short)STBIR__ROUND_INT(stbir__linear_to_srgb(stbir__saturate(encode_buffer[index])) * stbir__max_uint16_as_float); + } + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + ((unsigned short*)output_buffer)[pixel_index + alpha_channel] = STBIR__ENCODE_LINEAR16(encode_buffer[pixel_index + alpha_channel]); + } + + break; + + case STBIR__DECODE(STBIR_TYPE_UINT32, STBIR_COLORSPACE_LINEAR): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < channels; n++) + { + int index = pixel_index + n; + ((unsigned int*)output_buffer)[index] = (unsigned int)STBIR__ROUND_UINT(((double)stbir__saturate(encode_buffer[index])) * stbir__max_uint32_as_float); + } + } + break; + + case STBIR__DECODE(STBIR_TYPE_UINT32, STBIR_COLORSPACE_SRGB): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < num_nonalpha; n++) + { + int index = pixel_index + nonalpha[n]; + ((unsigned int*)output_buffer)[index] = (unsigned int)STBIR__ROUND_UINT(((double)stbir__linear_to_srgb(stbir__saturate(encode_buffer[index]))) * stbir__max_uint32_as_float); + } + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + ((unsigned int*)output_buffer)[pixel_index + alpha_channel] = (unsigned int)STBIR__ROUND_INT(((double)stbir__saturate(encode_buffer[pixel_index + alpha_channel])) * stbir__max_uint32_as_float); + } + break; + + case STBIR__DECODE(STBIR_TYPE_FLOAT, STBIR_COLORSPACE_LINEAR): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < channels; n++) + { + int index = pixel_index + n; + ((float*)output_buffer)[index] = encode_buffer[index]; + } + } + break; + + case STBIR__DECODE(STBIR_TYPE_FLOAT, STBIR_COLORSPACE_SRGB): + for (x=0; x < num_pixels; ++x) + { + int pixel_index = x*channels; + + for (n = 0; n < num_nonalpha; n++) + { + int index = pixel_index + nonalpha[n]; + ((float*)output_buffer)[index] = stbir__linear_to_srgb(encode_buffer[index]); + } + + if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE)) + ((float*)output_buffer)[pixel_index + alpha_channel] = encode_buffer[pixel_index + alpha_channel]; + } + break; + + default: + STBIR_ASSERT(!"Unknown type/colorspace/channels combination."); + break; + } +} + +static void stbir__resample_vertical_upsample(stbir__info* stbir_info, int n) +{ + int x, k; + int output_w = stbir_info->output_w; + stbir__contributors* vertical_contributors = stbir_info->vertical_contributors; + float* vertical_coefficients = stbir_info->vertical_coefficients; + int channels = stbir_info->channels; + int alpha_channel = stbir_info->alpha_channel; + int type = stbir_info->type; + int colorspace = stbir_info->colorspace; + int ring_buffer_entries = stbir_info->ring_buffer_num_entries; + void* output_data = stbir_info->output_data; + float* encode_buffer = stbir_info->encode_buffer; + int decode = STBIR__DECODE(type, colorspace); + int coefficient_width = stbir_info->vertical_coefficient_width; + int coefficient_counter; + int contributor = n; + + float* ring_buffer = stbir_info->ring_buffer; + int ring_buffer_begin_index = stbir_info->ring_buffer_begin_index; + int ring_buffer_first_scanline = stbir_info->ring_buffer_first_scanline; + int ring_buffer_length = stbir_info->ring_buffer_length_bytes/sizeof(float); + + int n0,n1, output_row_start; + int coefficient_group = coefficient_width * contributor; + + n0 = vertical_contributors[contributor].n0; + n1 = vertical_contributors[contributor].n1; + + output_row_start = n * stbir_info->output_stride_bytes; + + STBIR_ASSERT(stbir__use_height_upsampling(stbir_info)); + + memset(encode_buffer, 0, output_w * sizeof(float) * channels); + + // I tried reblocking this for better cache usage of encode_buffer + // (using x_outer, k, x_inner), but it lost speed. -- stb + + coefficient_counter = 0; + switch (channels) { + case 1: + for (k = n0; k <= n1; k++) + { + int coefficient_index = coefficient_counter++; + float* ring_buffer_entry = stbir__get_ring_buffer_scanline(k, ring_buffer, ring_buffer_begin_index, ring_buffer_first_scanline, ring_buffer_entries, ring_buffer_length); + float coefficient = vertical_coefficients[coefficient_group + coefficient_index]; + for (x = 0; x < output_w; ++x) + { + int in_pixel_index = x * 1; + encode_buffer[in_pixel_index + 0] += ring_buffer_entry[in_pixel_index + 0] * coefficient; + } + } + break; + case 2: + for (k = n0; k <= n1; k++) + { + int coefficient_index = coefficient_counter++; + float* ring_buffer_entry = stbir__get_ring_buffer_scanline(k, ring_buffer, ring_buffer_begin_index, ring_buffer_first_scanline, ring_buffer_entries, ring_buffer_length); + float coefficient = vertical_coefficients[coefficient_group + coefficient_index]; + for (x = 0; x < output_w; ++x) + { + int in_pixel_index = x * 2; + encode_buffer[in_pixel_index + 0] += ring_buffer_entry[in_pixel_index + 0] * coefficient; + encode_buffer[in_pixel_index + 1] += ring_buffer_entry[in_pixel_index + 1] * coefficient; + } + } + break; + case 3: + for (k = n0; k <= n1; k++) + { + int coefficient_index = coefficient_counter++; + float* ring_buffer_entry = stbir__get_ring_buffer_scanline(k, ring_buffer, ring_buffer_begin_index, ring_buffer_first_scanline, ring_buffer_entries, ring_buffer_length); + float coefficient = vertical_coefficients[coefficient_group + coefficient_index]; + for (x = 0; x < output_w; ++x) + { + int in_pixel_index = x * 3; + encode_buffer[in_pixel_index + 0] += ring_buffer_entry[in_pixel_index + 0] * coefficient; + encode_buffer[in_pixel_index + 1] += ring_buffer_entry[in_pixel_index + 1] * coefficient; + encode_buffer[in_pixel_index + 2] += ring_buffer_entry[in_pixel_index + 2] * coefficient; + } + } + break; + case 4: + for (k = n0; k <= n1; k++) + { + int coefficient_index = coefficient_counter++; + float* ring_buffer_entry = stbir__get_ring_buffer_scanline(k, ring_buffer, ring_buffer_begin_index, ring_buffer_first_scanline, ring_buffer_entries, ring_buffer_length); + float coefficient = vertical_coefficients[coefficient_group + coefficient_index]; + for (x = 0; x < output_w; ++x) + { + int in_pixel_index = x * 4; + encode_buffer[in_pixel_index + 0] += ring_buffer_entry[in_pixel_index + 0] * coefficient; + encode_buffer[in_pixel_index + 1] += ring_buffer_entry[in_pixel_index + 1] * coefficient; + encode_buffer[in_pixel_index + 2] += ring_buffer_entry[in_pixel_index + 2] * coefficient; + encode_buffer[in_pixel_index + 3] += ring_buffer_entry[in_pixel_index + 3] * coefficient; + } + } + break; + default: + for (k = n0; k <= n1; k++) + { + int coefficient_index = coefficient_counter++; + float* ring_buffer_entry = stbir__get_ring_buffer_scanline(k, ring_buffer, ring_buffer_begin_index, ring_buffer_first_scanline, ring_buffer_entries, ring_buffer_length); + float coefficient = vertical_coefficients[coefficient_group + coefficient_index]; + for (x = 0; x < output_w; ++x) + { + int in_pixel_index = x * channels; + int c; + for (c = 0; c < channels; c++) + encode_buffer[in_pixel_index + c] += ring_buffer_entry[in_pixel_index + c] * coefficient; + } + } + break; + } + stbir__encode_scanline(stbir_info, output_w, (char *) output_data + output_row_start, encode_buffer, channels, alpha_channel, decode); +} + +static void stbir__resample_vertical_downsample(stbir__info* stbir_info, int n) +{ + int x, k; + int output_w = stbir_info->output_w; + stbir__contributors* vertical_contributors = stbir_info->vertical_contributors; + float* vertical_coefficients = stbir_info->vertical_coefficients; + int channels = stbir_info->channels; + int ring_buffer_entries = stbir_info->ring_buffer_num_entries; + float* horizontal_buffer = stbir_info->horizontal_buffer; + int coefficient_width = stbir_info->vertical_coefficient_width; + int contributor = n + stbir_info->vertical_filter_pixel_margin; + + float* ring_buffer = stbir_info->ring_buffer; + int ring_buffer_begin_index = stbir_info->ring_buffer_begin_index; + int ring_buffer_first_scanline = stbir_info->ring_buffer_first_scanline; + int ring_buffer_length = stbir_info->ring_buffer_length_bytes/sizeof(float); + int n0,n1; + + n0 = vertical_contributors[contributor].n0; + n1 = vertical_contributors[contributor].n1; + + STBIR_ASSERT(!stbir__use_height_upsampling(stbir_info)); + + for (k = n0; k <= n1; k++) + { + int coefficient_index = k - n0; + int coefficient_group = coefficient_width * contributor; + float coefficient = vertical_coefficients[coefficient_group + coefficient_index]; + + float* ring_buffer_entry = stbir__get_ring_buffer_scanline(k, ring_buffer, ring_buffer_begin_index, ring_buffer_first_scanline, ring_buffer_entries, ring_buffer_length); + + switch (channels) { + case 1: + for (x = 0; x < output_w; x++) + { + int in_pixel_index = x * 1; + ring_buffer_entry[in_pixel_index + 0] += horizontal_buffer[in_pixel_index + 0] * coefficient; + } + break; + case 2: + for (x = 0; x < output_w; x++) + { + int in_pixel_index = x * 2; + ring_buffer_entry[in_pixel_index + 0] += horizontal_buffer[in_pixel_index + 0] * coefficient; + ring_buffer_entry[in_pixel_index + 1] += horizontal_buffer[in_pixel_index + 1] * coefficient; + } + break; + case 3: + for (x = 0; x < output_w; x++) + { + int in_pixel_index = x * 3; + ring_buffer_entry[in_pixel_index + 0] += horizontal_buffer[in_pixel_index + 0] * coefficient; + ring_buffer_entry[in_pixel_index + 1] += horizontal_buffer[in_pixel_index + 1] * coefficient; + ring_buffer_entry[in_pixel_index + 2] += horizontal_buffer[in_pixel_index + 2] * coefficient; + } + break; + case 4: + for (x = 0; x < output_w; x++) + { + int in_pixel_index = x * 4; + ring_buffer_entry[in_pixel_index + 0] += horizontal_buffer[in_pixel_index + 0] * coefficient; + ring_buffer_entry[in_pixel_index + 1] += horizontal_buffer[in_pixel_index + 1] * coefficient; + ring_buffer_entry[in_pixel_index + 2] += horizontal_buffer[in_pixel_index + 2] * coefficient; + ring_buffer_entry[in_pixel_index + 3] += horizontal_buffer[in_pixel_index + 3] * coefficient; + } + break; + default: + for (x = 0; x < output_w; x++) + { + int in_pixel_index = x * channels; + + int c; + for (c = 0; c < channels; c++) + ring_buffer_entry[in_pixel_index + c] += horizontal_buffer[in_pixel_index + c] * coefficient; + } + break; + } + } +} + +static void stbir__buffer_loop_upsample(stbir__info* stbir_info) +{ + int y; + float scale_ratio = stbir_info->vertical_scale; + float out_scanlines_radius = stbir__filter_info_table[stbir_info->vertical_filter].support(1/scale_ratio) * scale_ratio; + + STBIR_ASSERT(stbir__use_height_upsampling(stbir_info)); + + for (y = 0; y < stbir_info->output_h; y++) + { + float in_center_of_out = 0; // Center of the current out scanline in the in scanline space + int in_first_scanline = 0, in_last_scanline = 0; + + stbir__calculate_sample_range_upsample(y, out_scanlines_radius, scale_ratio, stbir_info->vertical_shift, &in_first_scanline, &in_last_scanline, &in_center_of_out); + + STBIR_ASSERT(in_last_scanline - in_first_scanline + 1 <= stbir_info->ring_buffer_num_entries); + + if (stbir_info->ring_buffer_begin_index >= 0) + { + // Get rid of whatever we don't need anymore. + while (in_first_scanline > stbir_info->ring_buffer_first_scanline) + { + if (stbir_info->ring_buffer_first_scanline == stbir_info->ring_buffer_last_scanline) + { + // We just popped the last scanline off the ring buffer. + // Reset it to the empty state. + stbir_info->ring_buffer_begin_index = -1; + stbir_info->ring_buffer_first_scanline = 0; + stbir_info->ring_buffer_last_scanline = 0; + break; + } + else + { + stbir_info->ring_buffer_first_scanline++; + stbir_info->ring_buffer_begin_index = (stbir_info->ring_buffer_begin_index + 1) % stbir_info->ring_buffer_num_entries; + } + } + } + + // Load in new ones. + if (stbir_info->ring_buffer_begin_index < 0) + stbir__decode_and_resample_upsample(stbir_info, in_first_scanline); + + while (in_last_scanline > stbir_info->ring_buffer_last_scanline) + stbir__decode_and_resample_upsample(stbir_info, stbir_info->ring_buffer_last_scanline + 1); + + // Now all buffers should be ready to write a row of vertical sampling. + stbir__resample_vertical_upsample(stbir_info, y); + + STBIR_PROGRESS_REPORT((float)y / stbir_info->output_h); + } +} + +static void stbir__empty_ring_buffer(stbir__info* stbir_info, int first_necessary_scanline) +{ + int output_stride_bytes = stbir_info->output_stride_bytes; + int channels = stbir_info->channels; + int alpha_channel = stbir_info->alpha_channel; + int type = stbir_info->type; + int colorspace = stbir_info->colorspace; + int output_w = stbir_info->output_w; + void* output_data = stbir_info->output_data; + int decode = STBIR__DECODE(type, colorspace); + + float* ring_buffer = stbir_info->ring_buffer; + int ring_buffer_length = stbir_info->ring_buffer_length_bytes/sizeof(float); + + if (stbir_info->ring_buffer_begin_index >= 0) + { + // Get rid of whatever we don't need anymore. + while (first_necessary_scanline > stbir_info->ring_buffer_first_scanline) + { + if (stbir_info->ring_buffer_first_scanline >= 0 && stbir_info->ring_buffer_first_scanline < stbir_info->output_h) + { + int output_row_start = stbir_info->ring_buffer_first_scanline * output_stride_bytes; + float* ring_buffer_entry = stbir__get_ring_buffer_entry(ring_buffer, stbir_info->ring_buffer_begin_index, ring_buffer_length); + stbir__encode_scanline(stbir_info, output_w, (char *) output_data + output_row_start, ring_buffer_entry, channels, alpha_channel, decode); + STBIR_PROGRESS_REPORT((float)stbir_info->ring_buffer_first_scanline / stbir_info->output_h); + } + + if (stbir_info->ring_buffer_first_scanline == stbir_info->ring_buffer_last_scanline) + { + // We just popped the last scanline off the ring buffer. + // Reset it to the empty state. + stbir_info->ring_buffer_begin_index = -1; + stbir_info->ring_buffer_first_scanline = 0; + stbir_info->ring_buffer_last_scanline = 0; + break; + } + else + { + stbir_info->ring_buffer_first_scanline++; + stbir_info->ring_buffer_begin_index = (stbir_info->ring_buffer_begin_index + 1) % stbir_info->ring_buffer_num_entries; + } + } + } +} + +static void stbir__buffer_loop_downsample(stbir__info* stbir_info) +{ + int y; + float scale_ratio = stbir_info->vertical_scale; + int output_h = stbir_info->output_h; + float in_pixels_radius = stbir__filter_info_table[stbir_info->vertical_filter].support(scale_ratio) / scale_ratio; + int pixel_margin = stbir_info->vertical_filter_pixel_margin; + int max_y = stbir_info->input_h + pixel_margin; + + STBIR_ASSERT(!stbir__use_height_upsampling(stbir_info)); + + for (y = -pixel_margin; y < max_y; y++) + { + float out_center_of_in; // Center of the current out scanline in the in scanline space + int out_first_scanline, out_last_scanline; + + stbir__calculate_sample_range_downsample(y, in_pixels_radius, scale_ratio, stbir_info->vertical_shift, &out_first_scanline, &out_last_scanline, &out_center_of_in); + + STBIR_ASSERT(out_last_scanline - out_first_scanline + 1 <= stbir_info->ring_buffer_num_entries); + + if (out_last_scanline < 0 || out_first_scanline >= output_h) + continue; + + stbir__empty_ring_buffer(stbir_info, out_first_scanline); + + stbir__decode_and_resample_downsample(stbir_info, y); + + // Load in new ones. + if (stbir_info->ring_buffer_begin_index < 0) + stbir__add_empty_ring_buffer_entry(stbir_info, out_first_scanline); + + while (out_last_scanline > stbir_info->ring_buffer_last_scanline) + stbir__add_empty_ring_buffer_entry(stbir_info, stbir_info->ring_buffer_last_scanline + 1); + + // Now the horizontal buffer is ready to write to all ring buffer rows. + stbir__resample_vertical_downsample(stbir_info, y); + } + + stbir__empty_ring_buffer(stbir_info, stbir_info->output_h); +} + +static void stbir__setup(stbir__info *info, int input_w, int input_h, int output_w, int output_h, int channels) +{ + info->input_w = input_w; + info->input_h = input_h; + info->output_w = output_w; + info->output_h = output_h; + info->channels = channels; +} + +static void stbir__calculate_transform(stbir__info *info, float s0, float t0, float s1, float t1, float *transform) +{ + info->s0 = s0; + info->t0 = t0; + info->s1 = s1; + info->t1 = t1; + + if (transform) + { + info->horizontal_scale = transform[0]; + info->vertical_scale = transform[1]; + info->horizontal_shift = transform[2]; + info->vertical_shift = transform[3]; + } + else + { + info->horizontal_scale = ((float)info->output_w / info->input_w) / (s1 - s0); + info->vertical_scale = ((float)info->output_h / info->input_h) / (t1 - t0); + + info->horizontal_shift = s0 * info->output_w / (s1 - s0); + info->vertical_shift = t0 * info->output_h / (t1 - t0); + } +} + +static void stbir__choose_filter(stbir__info *info, stbir_filter h_filter, stbir_filter v_filter) +{ + if (h_filter == 0) + h_filter = stbir__use_upsampling(info->horizontal_scale) ? STBIR_DEFAULT_FILTER_UPSAMPLE : STBIR_DEFAULT_FILTER_DOWNSAMPLE; + if (v_filter == 0) + v_filter = stbir__use_upsampling(info->vertical_scale) ? STBIR_DEFAULT_FILTER_UPSAMPLE : STBIR_DEFAULT_FILTER_DOWNSAMPLE; + info->horizontal_filter = h_filter; + info->vertical_filter = v_filter; +} + +static stbir_uint32 stbir__calculate_memory(stbir__info *info) +{ + int pixel_margin = stbir__get_filter_pixel_margin(info->horizontal_filter, info->horizontal_scale); + int filter_height = stbir__get_filter_pixel_width(info->vertical_filter, info->vertical_scale); + + info->horizontal_num_contributors = stbir__get_contributors(info->horizontal_scale, info->horizontal_filter, info->input_w, info->output_w); + info->vertical_num_contributors = stbir__get_contributors(info->vertical_scale , info->vertical_filter , info->input_h, info->output_h); + + // One extra entry because floating point precision problems sometimes cause an extra to be necessary. + info->ring_buffer_num_entries = filter_height + 1; + + info->horizontal_contributors_size = info->horizontal_num_contributors * sizeof(stbir__contributors); + info->horizontal_coefficients_size = stbir__get_total_horizontal_coefficients(info) * sizeof(float); + info->vertical_contributors_size = info->vertical_num_contributors * sizeof(stbir__contributors); + info->vertical_coefficients_size = stbir__get_total_vertical_coefficients(info) * sizeof(float); + info->decode_buffer_size = (info->input_w + pixel_margin * 2) * info->channels * sizeof(float); + info->horizontal_buffer_size = info->output_w * info->channels * sizeof(float); + info->ring_buffer_size = info->output_w * info->channels * info->ring_buffer_num_entries * sizeof(float); + info->encode_buffer_size = info->output_w * info->channels * sizeof(float); + + STBIR_ASSERT(info->horizontal_filter != 0); + STBIR_ASSERT(info->horizontal_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); // this now happens too late + STBIR_ASSERT(info->vertical_filter != 0); + STBIR_ASSERT(info->vertical_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); // this now happens too late + + if (stbir__use_height_upsampling(info)) + // The horizontal buffer is for when we're downsampling the height and we + // can't output the result of sampling the decode buffer directly into the + // ring buffers. + info->horizontal_buffer_size = 0; + else + // The encode buffer is to retain precision in the height upsampling method + // and isn't used when height downsampling. + info->encode_buffer_size = 0; + + return info->horizontal_contributors_size + info->horizontal_coefficients_size + + info->vertical_contributors_size + info->vertical_coefficients_size + + info->decode_buffer_size + info->horizontal_buffer_size + + info->ring_buffer_size + info->encode_buffer_size; +} + +static int stbir__resize_allocated(stbir__info *info, + const void* input_data, int input_stride_in_bytes, + void* output_data, int output_stride_in_bytes, + int alpha_channel, stbir_uint32 flags, stbir_datatype type, + stbir_edge edge_horizontal, stbir_edge edge_vertical, stbir_colorspace colorspace, + void* tempmem, size_t tempmem_size_in_bytes) +{ + size_t memory_required = stbir__calculate_memory(info); + + int width_stride_input = input_stride_in_bytes ? input_stride_in_bytes : info->channels * info->input_w * stbir__type_size[type]; + int width_stride_output = output_stride_in_bytes ? output_stride_in_bytes : info->channels * info->output_w * stbir__type_size[type]; + +#ifdef STBIR_DEBUG_OVERWRITE_TEST +#define OVERWRITE_ARRAY_SIZE 8 + unsigned char overwrite_output_before_pre[OVERWRITE_ARRAY_SIZE]; + unsigned char overwrite_tempmem_before_pre[OVERWRITE_ARRAY_SIZE]; + unsigned char overwrite_output_after_pre[OVERWRITE_ARRAY_SIZE]; + unsigned char overwrite_tempmem_after_pre[OVERWRITE_ARRAY_SIZE]; + + size_t begin_forbidden = width_stride_output * (info->output_h - 1) + info->output_w * info->channels * stbir__type_size[type]; + memcpy(overwrite_output_before_pre, &((unsigned char*)output_data)[-OVERWRITE_ARRAY_SIZE], OVERWRITE_ARRAY_SIZE); + memcpy(overwrite_output_after_pre, &((unsigned char*)output_data)[begin_forbidden], OVERWRITE_ARRAY_SIZE); + memcpy(overwrite_tempmem_before_pre, &((unsigned char*)tempmem)[-OVERWRITE_ARRAY_SIZE], OVERWRITE_ARRAY_SIZE); + memcpy(overwrite_tempmem_after_pre, &((unsigned char*)tempmem)[tempmem_size_in_bytes], OVERWRITE_ARRAY_SIZE); +#endif + + STBIR_ASSERT(info->channels >= 0); + STBIR_ASSERT(info->channels <= STBIR_MAX_CHANNELS); + + if (info->channels < 0 || info->channels > STBIR_MAX_CHANNELS) + return 0; + + STBIR_ASSERT(info->horizontal_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); + STBIR_ASSERT(info->vertical_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); + + if (info->horizontal_filter >= STBIR__ARRAY_SIZE(stbir__filter_info_table)) + return 0; + if (info->vertical_filter >= STBIR__ARRAY_SIZE(stbir__filter_info_table)) + return 0; + + if (alpha_channel < 0) + flags |= STBIR_FLAG_ALPHA_USES_COLORSPACE | STBIR_FLAG_ALPHA_PREMULTIPLIED; + + if (!(flags&STBIR_FLAG_ALPHA_USES_COLORSPACE) || !(flags&STBIR_FLAG_ALPHA_PREMULTIPLIED)) { + STBIR_ASSERT(alpha_channel >= 0 && alpha_channel < info->channels); + } + + if (alpha_channel >= info->channels) + return 0; + + STBIR_ASSERT(tempmem); + + if (!tempmem) + return 0; + + STBIR_ASSERT(tempmem_size_in_bytes >= memory_required); + + if (tempmem_size_in_bytes < memory_required) + return 0; + + memset(tempmem, 0, tempmem_size_in_bytes); + + info->input_data = input_data; + info->input_stride_bytes = width_stride_input; + + info->output_data = output_data; + info->output_stride_bytes = width_stride_output; + + info->alpha_channel = alpha_channel; + info->flags = flags; + info->type = type; + info->edge_horizontal = edge_horizontal; + info->edge_vertical = edge_vertical; + info->colorspace = colorspace; + + info->horizontal_coefficient_width = stbir__get_coefficient_width (info->horizontal_filter, info->horizontal_scale); + info->vertical_coefficient_width = stbir__get_coefficient_width (info->vertical_filter , info->vertical_scale ); + info->horizontal_filter_pixel_width = stbir__get_filter_pixel_width (info->horizontal_filter, info->horizontal_scale); + info->vertical_filter_pixel_width = stbir__get_filter_pixel_width (info->vertical_filter , info->vertical_scale ); + info->horizontal_filter_pixel_margin = stbir__get_filter_pixel_margin(info->horizontal_filter, info->horizontal_scale); + info->vertical_filter_pixel_margin = stbir__get_filter_pixel_margin(info->vertical_filter , info->vertical_scale ); + + info->ring_buffer_length_bytes = info->output_w * info->channels * sizeof(float); + info->decode_buffer_pixels = info->input_w + info->horizontal_filter_pixel_margin * 2; + +#define STBIR__NEXT_MEMPTR(current, newtype) (newtype*)(((unsigned char*)current) + current##_size) + + info->horizontal_contributors = (stbir__contributors *) tempmem; + info->horizontal_coefficients = STBIR__NEXT_MEMPTR(info->horizontal_contributors, float); + info->vertical_contributors = STBIR__NEXT_MEMPTR(info->horizontal_coefficients, stbir__contributors); + info->vertical_coefficients = STBIR__NEXT_MEMPTR(info->vertical_contributors, float); + info->decode_buffer = STBIR__NEXT_MEMPTR(info->vertical_coefficients, float); + + if (stbir__use_height_upsampling(info)) + { + info->horizontal_buffer = NULL; + info->ring_buffer = STBIR__NEXT_MEMPTR(info->decode_buffer, float); + info->encode_buffer = STBIR__NEXT_MEMPTR(info->ring_buffer, float); + + STBIR_ASSERT((size_t)STBIR__NEXT_MEMPTR(info->encode_buffer, unsigned char) == (size_t)tempmem + tempmem_size_in_bytes); + } + else + { + info->horizontal_buffer = STBIR__NEXT_MEMPTR(info->decode_buffer, float); + info->ring_buffer = STBIR__NEXT_MEMPTR(info->horizontal_buffer, float); + info->encode_buffer = NULL; + + STBIR_ASSERT((size_t)STBIR__NEXT_MEMPTR(info->ring_buffer, unsigned char) == (size_t)tempmem + tempmem_size_in_bytes); + } + +#undef STBIR__NEXT_MEMPTR + + // This signals that the ring buffer is empty + info->ring_buffer_begin_index = -1; + + stbir__calculate_filters(info->horizontal_contributors, info->horizontal_coefficients, info->horizontal_filter, info->horizontal_scale, info->horizontal_shift, info->input_w, info->output_w); + stbir__calculate_filters(info->vertical_contributors, info->vertical_coefficients, info->vertical_filter, info->vertical_scale, info->vertical_shift, info->input_h, info->output_h); + + STBIR_PROGRESS_REPORT(0); + + if (stbir__use_height_upsampling(info)) + stbir__buffer_loop_upsample(info); + else + stbir__buffer_loop_downsample(info); + + STBIR_PROGRESS_REPORT(1); + +#ifdef STBIR_DEBUG_OVERWRITE_TEST + STBIR_ASSERT(memcmp(overwrite_output_before_pre, &((unsigned char*)output_data)[-OVERWRITE_ARRAY_SIZE], OVERWRITE_ARRAY_SIZE) == 0); + STBIR_ASSERT(memcmp(overwrite_output_after_pre, &((unsigned char*)output_data)[begin_forbidden], OVERWRITE_ARRAY_SIZE) == 0); + STBIR_ASSERT(memcmp(overwrite_tempmem_before_pre, &((unsigned char*)tempmem)[-OVERWRITE_ARRAY_SIZE], OVERWRITE_ARRAY_SIZE) == 0); + STBIR_ASSERT(memcmp(overwrite_tempmem_after_pre, &((unsigned char*)tempmem)[tempmem_size_in_bytes], OVERWRITE_ARRAY_SIZE) == 0); +#endif + + return 1; +} + + +static int stbir__resize_arbitrary( + void *alloc_context, + const void* input_data, int input_w, int input_h, int input_stride_in_bytes, + void* output_data, int output_w, int output_h, int output_stride_in_bytes, + float s0, float t0, float s1, float t1, float *transform, + int channels, int alpha_channel, stbir_uint32 flags, stbir_datatype type, + stbir_filter h_filter, stbir_filter v_filter, + stbir_edge edge_horizontal, stbir_edge edge_vertical, stbir_colorspace colorspace) +{ + stbir__info info; + int result; + size_t memory_required; + void* extra_memory; + + stbir__setup(&info, input_w, input_h, output_w, output_h, channels); + stbir__calculate_transform(&info, s0,t0,s1,t1,transform); + stbir__choose_filter(&info, h_filter, v_filter); + memory_required = stbir__calculate_memory(&info); + extra_memory = STBIR_MALLOC(memory_required, alloc_context); + + if (!extra_memory) + return 0; + + result = stbir__resize_allocated(&info, input_data, input_stride_in_bytes, + output_data, output_stride_in_bytes, + alpha_channel, flags, type, + edge_horizontal, edge_vertical, + colorspace, extra_memory, memory_required); + + STBIR_FREE(extra_memory, alloc_context); + + return result; +} + +STBIRDEF int stbir_resize_uint8( const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels) +{ + return stbir__resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,-1,0, STBIR_TYPE_UINT8, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT, + STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR); +} + +STBIRDEF int stbir_resize_float( const float *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + float *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels) +{ + return stbir__resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,-1,0, STBIR_TYPE_FLOAT, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT, + STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR); +} + +STBIRDEF int stbir_resize_uint8_srgb(const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags) +{ + return stbir__resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT8, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT, + STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB); +} + +STBIRDEF int stbir_resize_uint8_srgb_edgemode(const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode) +{ + return stbir__resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT8, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT, + edge_wrap_mode, edge_wrap_mode, STBIR_COLORSPACE_SRGB); +} + +STBIRDEF int stbir_resize_uint8_generic( const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space, + void *alloc_context) +{ + return stbir__resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT8, filter, filter, + edge_wrap_mode, edge_wrap_mode, space); +} + +STBIRDEF int stbir_resize_uint16_generic(const stbir_uint16 *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + stbir_uint16 *output_pixels , int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space, + void *alloc_context) +{ + return stbir__resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT16, filter, filter, + edge_wrap_mode, edge_wrap_mode, space); +} + + +STBIRDEF int stbir_resize_float_generic( const float *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + float *output_pixels , int output_w, int output_h, int output_stride_in_bytes, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space, + void *alloc_context) +{ + return stbir__resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_FLOAT, filter, filter, + edge_wrap_mode, edge_wrap_mode, space); +} + + +STBIRDEF int stbir_resize( const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + void *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + stbir_datatype datatype, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical, + stbir_filter filter_horizontal, stbir_filter filter_vertical, + stbir_colorspace space, void *alloc_context) +{ + return stbir__resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,NULL,num_channels,alpha_channel,flags, datatype, filter_horizontal, filter_vertical, + edge_mode_horizontal, edge_mode_vertical, space); +} + + +STBIRDEF int stbir_resize_subpixel(const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + void *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + stbir_datatype datatype, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical, + stbir_filter filter_horizontal, stbir_filter filter_vertical, + stbir_colorspace space, void *alloc_context, + float x_scale, float y_scale, + float x_offset, float y_offset) +{ + float transform[4]; + transform[0] = x_scale; + transform[1] = y_scale; + transform[2] = x_offset; + transform[3] = y_offset; + return stbir__resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + 0,0,1,1,transform,num_channels,alpha_channel,flags, datatype, filter_horizontal, filter_vertical, + edge_mode_horizontal, edge_mode_vertical, space); +} + +STBIRDEF int stbir_resize_region( const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes, + void *output_pixels, int output_w, int output_h, int output_stride_in_bytes, + stbir_datatype datatype, + int num_channels, int alpha_channel, int flags, + stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical, + stbir_filter filter_horizontal, stbir_filter filter_vertical, + stbir_colorspace space, void *alloc_context, + float s0, float t0, float s1, float t1) +{ + return stbir__resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes, + output_pixels, output_w, output_h, output_stride_in_bytes, + s0,t0,s1,t1,NULL,num_channels,alpha_channel,flags, datatype, filter_horizontal, filter_vertical, + edge_mode_horizontal, edge_mode_vertical, space); +} + +#endif // STB_IMAGE_RESIZE_IMPLEMENTATION + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/extern/imgui b/extern/imgui new file mode 160000 index 00000000..8a9fe268 --- /dev/null +++ b/extern/imgui @@ -0,0 +1 @@ +Subproject commit 8a9fe268662292ed9495048d942d8d0341c03185 diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp new file mode 100644 index 00000000..4432deab --- /dev/null +++ b/src/gui/gui.cpp @@ -0,0 +1,9 @@ +#include "gui.h" + +void FurnaceGUI::bindEngine(DivEngine* eng) { + e=eng; +} + +FurnaceGUI::FurnaceGUI(): + e(NULL) { +} \ No newline at end of file diff --git a/src/gui/gui.h b/src/gui/gui.h new file mode 100644 index 00000000..f6dced3c --- /dev/null +++ b/src/gui/gui.h @@ -0,0 +1,9 @@ +#include "../engine/engine.h" + +class FurnaceGUI { + DivEngine* e; + + public: + void bindEngine(DivEngine* eng); + FurnaceGUI(); +}; \ No newline at end of file