mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-11-24 04:15:11 +00:00
107 lines
3.5 KiB
C++
107 lines
3.5 KiB
C++
// Copyright (c) 2020 Michael Fabian Dirks <info@xaymar.com>
|
|
//
|
|
// 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 "util-library.hpp"
|
|
#include <unordered_map>
|
|
#include "util-platform.hpp"
|
|
|
|
#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__) // Windows
|
|
#define ST_WINDOWS
|
|
#else
|
|
#define ST_UNIX
|
|
#endif
|
|
|
|
#if defined(ST_WINDOWS)
|
|
#include <Windows.h>
|
|
#elif defined(ST_UNIX)
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
streamfx::util::library::library(std::filesystem::path file) : _library(nullptr)
|
|
{
|
|
#if defined(ST_WINDOWS)
|
|
SetLastError(ERROR_SUCCESS);
|
|
file = ::streamfx::util::platform::utf8_to_native(file);
|
|
_library = reinterpret_cast<void*>(LoadLibraryW(file.wstring().c_str()));
|
|
if (!_library) {
|
|
DWORD error = GetLastError();
|
|
if (error != ERROR_PROC_NOT_FOUND) {
|
|
PSTR message = NULL;
|
|
std::string ex = "Failed to load library.";
|
|
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_ALLOCATE_BUFFER,
|
|
NULL, error, MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), (LPSTR)&message, 0, NULL);
|
|
if (message) {
|
|
ex = message;
|
|
LocalFree(message);
|
|
throw std::runtime_error(ex);
|
|
}
|
|
}
|
|
throw std::runtime_error("Failed to load library.");
|
|
}
|
|
#elif defined(ST_UNIX)
|
|
_library = dlopen(file.u8string().c_str(), RTLD_LAZY);
|
|
if (!_library) {
|
|
if (char* error = dlerror(); error)
|
|
throw std::runtime_error(error);
|
|
else
|
|
throw std::runtime_error("Failed to load library.");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
streamfx::util::library::~library()
|
|
{
|
|
#if defined(ST_WINDOWS)
|
|
FreeLibrary(reinterpret_cast<HMODULE>(_library));
|
|
#elif defined(ST_UNIX)
|
|
dlclose(_library);
|
|
#endif
|
|
}
|
|
|
|
void* streamfx::util::library::load_symbol(std::string_view name)
|
|
{
|
|
#if defined(ST_WINDOWS)
|
|
return reinterpret_cast<void*>(GetProcAddress(reinterpret_cast<HMODULE>(_library), name.data()));
|
|
#elif defined(ST_UNIX)
|
|
return reinterpret_cast<void*>(dlsym(_library, name.data()));
|
|
#endif
|
|
}
|
|
|
|
static std::unordered_map<std::string, std::weak_ptr<::streamfx::util::library>> libraries;
|
|
|
|
std::shared_ptr<::streamfx::util::library> streamfx::util::library::load(std::filesystem::path file)
|
|
{
|
|
auto kv = libraries.find(file.u8string());
|
|
if (kv != libraries.end()) {
|
|
if (auto ptr = kv->second.lock(); ptr)
|
|
return ptr;
|
|
libraries.erase(kv);
|
|
}
|
|
|
|
auto ptr = std::make_shared<::streamfx::util::library>(file);
|
|
libraries.emplace(file.u8string(), ptr);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
std::shared_ptr<::streamfx::util::library> streamfx::util::library::load(std::string_view name)
|
|
{
|
|
return load(std::filesystem::u8path(name));
|
|
}
|