obs-StreamFX/source/gfx/shader/gfx-shader-param-texture.cpp

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// Modern effects for a modern Streamer
// Copyright (C) 2019 Michael Fabian Dirks
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#include "gfx-shader-param-texture.hpp"
#include "strings.hpp"
#include "gfx-shader.hpp"
#include "gfx/gfx-debug.hpp"
#include "obs/gs/gs-helper.hpp"
#include "obs/obs-source-tracker.hpp"
#include "util/util-platform.hpp"
#include "warning-disable.hpp"
#include <map>
#include <sstream>
#include <stdexcept>
#include "warning-enable.hpp"
// TODO:
// - FFT Audio Conversion
// - FFT Variable Size...
// UI:
// Name/Key {
// Type = File/Source/Sink
// File = ...
// Source = ...
// }
#define ST_I18N "Shader.Parameter.Texture"
#define ST_KEY_TYPE ".Type"
#define ST_I18N_TYPE ST_I18N ".Type"
#define ST_I18N_TYPE_FILE ST_I18N_TYPE ".File"
#define ST_I18N_TYPE_SOURCE ST_I18N_TYPE ".Source"
#define ST_KEY_FILE ".File"
#define ST_I18N_FILE ST_I18N ".File"
#define ST_KEY_SOURCE ".Source"
#define ST_I18N_SOURCE ST_I18N ".Source"
static constexpr std::string_view _annotation_field_type = "field_type";
static constexpr std::string_view _annotation_default = "default";
static constexpr std::string_view _annotation_enum_entry = "enum_%zu";
static constexpr std::string_view _annotation_enum_entry_name = "enum_%zu_name";
streamfx::gfx::shader::texture_field_type streamfx::gfx::shader::get_texture_field_type_from_string(std::string_view v)
{
std::map<std::string, texture_field_type> matches = {
{"input", texture_field_type::Input},
{"enum", texture_field_type::Enum},
{"enumeration", texture_field_type::Enum},
};
auto fnd = matches.find(v.data());
if (fnd != matches.end())
return fnd->second;
return texture_field_type::Input;
}
streamfx::gfx::shader::texture_parameter::texture_parameter(streamfx::gfx::shader::shader* parent,
streamfx::obs::gs::effect_parameter param,
std::string prefix)
: parameter(parent, param, prefix), _field_type(texture_field_type::Input), _keys(), _values(),
_type(texture_type::File), _active(false), _visible(false), _dirty(true),
_dirty_ts(std::chrono::high_resolution_clock::now()), _file_path(), _file_texture(), _source_name(), _source(),
_source_child(), _source_active(), _source_visible(), _source_rendertarget()
{
char string_buffer[256];
// Build keys and names.
{
_keys.reserve(3);
{ // Type
snprintf(string_buffer, sizeof(string_buffer), "%s%s", get_key().data(), ST_KEY_TYPE);
_keys.emplace_back(string_buffer);
}
{ // File
snprintf(string_buffer, sizeof(string_buffer), "%s%s", get_key().data(), ST_KEY_FILE);
_keys.emplace_back(string_buffer);
}
{ // Source
snprintf(string_buffer, sizeof(string_buffer), "%s%s", get_key().data(), ST_KEY_SOURCE);
_keys.emplace_back(string_buffer);
}
}
// Detect Field Types
if (auto anno = get_parameter().get_annotation(_annotation_field_type); anno) {
_field_type = get_texture_field_type_from_string(anno.get_default_string());
}
if (auto anno = get_parameter().get_annotation(_annotation_default); anno) {
_default = std::filesystem::path(anno.get_default_string());
}
if (field_type() == texture_field_type::Enum) {
for (std::size_t idx = 0; idx < std::numeric_limits<std::size_t>::max(); idx++) {
// Build key.
std::string key_name;
std::string key_value;
{
snprintf(string_buffer, sizeof(string_buffer), _annotation_enum_entry.data(), idx);
key_value = std::string(string_buffer);
snprintf(string_buffer, sizeof(string_buffer), _annotation_enum_entry_name.data(), idx);
key_name = std::string(string_buffer);
}
// Value must be given, name is optional.
if (auto eanno = get_parameter().get_annotation(key_value);
eanno
&& (get_type_from_effect_type(eanno.get_type()) == streamfx::gfx::shader::parameter_type::String)) {
texture_enum_data entry;
entry.data.file = std::filesystem::path(eanno.get_default_string());
if (auto nanno = get_parameter().get_annotation(key_name);
nanno && (nanno.get_type() == streamfx::obs::gs::effect_parameter::type::String)) {
entry.name = nanno.get_default_string();
} else {
entry.name = "Unnamed Entry";
}
_values.push_back(entry);
} else {
break;
}
}
if (_values.size() == 0) {
_field_type = texture_field_type::Input;
} else {
_keys[1] = get_key();
}
}
if (field_type() == texture_field_type::Input) {
// Special code for Input-only fields.
}
}
streamfx::gfx::shader::texture_parameter::~texture_parameter() {}
void streamfx::gfx::shader::texture_parameter::defaults(obs_data_t* settings)
{
if (field_type() == texture_field_type::Input) {
obs_data_set_default_int(settings, _keys[0].c_str(), static_cast<long long>(texture_type::File));
obs_data_set_default_string(settings, _keys[1].c_str(), _default.generic_u8string().c_str());
obs_data_set_default_string(settings, _keys[2].c_str(), "");
} else {
obs_data_set_default_string(settings, _keys[1].c_str(), _default.generic_u8string().c_str());
}
}
bool streamfx::gfx::shader::texture_parameter::modified_type(void* priv, obs_properties_t* props, obs_property_t*,
obs_data_t* settings)
{
auto self = reinterpret_cast<streamfx::gfx::shader::texture_parameter*>(priv);
if (self->field_type() == texture_field_type::Input) {
auto type = static_cast<texture_type>(obs_data_get_int(settings, self->_keys[0].c_str()));
obs_property_set_visible(obs_properties_get(props, self->_keys[1].c_str()), type == texture_type::File);
obs_property_set_visible(obs_properties_get(props, self->_keys[2].c_str()), type == texture_type::Source);
return true;
}
return false;
}
void streamfx::gfx::shader::texture_parameter::properties(obs_properties_t* props, obs_data_t* settings)
{
if (!is_visible())
return;
if (field_type() == texture_field_type::Enum) {
auto p = obs_properties_add_list(props, get_key().data(), has_name() ? get_name().data() : get_key().data(),
OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_STRING);
for (auto v : _values) {
obs_property_list_add_string(p, v.name.c_str(), v.data.file.generic_u8string().c_str());
}
} else {
obs_properties_t* pr = obs_properties_create();
{
auto p = obs_properties_add_group(props, get_key().data(),
has_name() ? get_name().data() : get_key().data(), OBS_GROUP_NORMAL, pr);
if (has_description())
obs_property_set_long_description(p, get_description().data());
}
{
auto p = obs_properties_add_list(pr, _keys[0].c_str(), D_TRANSLATE(ST_I18N_TYPE), OBS_COMBO_TYPE_LIST,
OBS_COMBO_FORMAT_INT);
obs_property_set_modified_callback2(p, modified_type, this);
obs_property_list_add_int(p, D_TRANSLATE(ST_I18N_TYPE_FILE), static_cast<int64_t>(texture_type::File));
obs_property_list_add_int(p, D_TRANSLATE(ST_I18N_TYPE_SOURCE), static_cast<int64_t>(texture_type::Source));
}
{
// ToDo: Filter and Default Path.
auto p = obs_properties_add_path(pr, _keys[1].c_str(), D_TRANSLATE(ST_I18N_FILE), OBS_PATH_FILE, "* (*.*)",
nullptr);
}
{
auto p = obs_properties_add_list(pr, _keys[2].c_str(), D_TRANSLATE(ST_I18N_SOURCE), OBS_COMBO_TYPE_LIST,
OBS_COMBO_FORMAT_STRING);
obs_property_list_add_string(p, "", "");
obs::source_tracker::get()->enumerate(
[&p](std::string name, obs_source_t*) {
std::stringstream sstr;
sstr << name << " (" << D_TRANSLATE(S_SOURCETYPE_SOURCE) << ")";
obs_property_list_add_string(p, sstr.str().c_str(), name.c_str());
return false;
},
obs::source_tracker::filter_video_sources);
obs::source_tracker::get()->enumerate(
[&p](std::string name, obs_source_t*) {
std::stringstream sstr;
sstr << name << " (" << D_TRANSLATE(S_SOURCETYPE_SCENE) << ")";
obs_property_list_add_string(p, sstr.str().c_str(), name.c_str());
return false;
},
obs::source_tracker::filter_scenes);
}
modified_type(this, props, nullptr, settings);
}
}
std::filesystem::path make_absolute_to(const std::filesystem::path& origin, const std::filesystem::path& destination)
{
return std::filesystem::absolute(destination / origin);
}
void streamfx::gfx::shader::texture_parameter::update(obs_data_t* settings)
{
// Value is assigned elsewhere.
if (is_automatic())
return;
if (field_type() == texture_field_type::Input) {
_type = static_cast<texture_type>(obs_data_get_int(settings, _keys[0].c_str()));
} else {
_type = texture_type::File;
}
if (_type == texture_type::File) {
auto file_path = std::filesystem::path(obs_data_get_string(settings, _keys[1].c_str()));
if (file_path.is_relative()) {
file_path = make_absolute_to(file_path, get_parent()->get_shader_file());
}
if (_file_path != file_path) {
_file_path = file_path;
_dirty = true;
_dirty_ts = std::chrono::high_resolution_clock::now() - std::chrono::milliseconds(1);
}
} else if (_type == texture_type::Source) {
const char* source_name = obs_data_get_string(settings, _keys[2].c_str());
if (_source_name != source_name) {
_source_name = source_name;
_dirty = true;
_dirty_ts = std::chrono::high_resolution_clock::now() - std::chrono::milliseconds(1);
}
}
}
void streamfx::gfx::shader::texture_parameter::assign()
{
if (is_automatic())
return;
// If the data has been marked dirty, and the future timestamp minus the now is smaller than 0ms.
if (_dirty && ((_dirty_ts - std::chrono::high_resolution_clock::now()) < std::chrono::milliseconds(0))) {
// Reload or Reacquire everything necessary.
try {
// Remove now unused references.
_source.reset();
_source_child.reset();
_source_active.reset();
_source_visible.reset();
_source_rendertarget.reset();
_file_texture.reset();
if (((field_type() == texture_field_type::Input) && (_type == texture_type::File))
|| (field_type() == texture_field_type::Enum)) {
if (!_file_path.empty()) {
_file_texture = std::make_shared<streamfx::obs::gs::texture>(
streamfx::util::platform::native_to_utf8(_file_path).generic_u8string().c_str());
}
} else if ((field_type() == texture_field_type::Input) && (_type == texture_type::Source)) {
// Try and grab the source itself.
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auto source = ::streamfx::obs::source(_source_name);
if (!source) {
throw std::runtime_error("Specified Source does not exist.");
}
// Attach the child to our parent.
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auto child = std::make_shared<::streamfx::obs::source_active_child>(source, get_parent()->get());
// Create necessary visible and active objects.
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decltype(_source_active) active;
decltype(_source_visible) visible;
if (_active) {
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active = ::streamfx::obs::source_active_reference::add_active_reference(source);
}
if (_visible) {
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visible = ::streamfx::obs::source_showing_reference::add_showing_reference(source);
}
// Create the necessary render target to capture the source.
auto rt = std::make_shared<streamfx::obs::gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
// Propagate all of this into the storage.
_source_rendertarget = rt;
_source_visible = std::move(visible);
_source_active = std::move(active);
_source_child = child;
_source = source;
}
_dirty = false;
} catch (const std::exception&) {
_dirty_ts = std::chrono::high_resolution_clock::now() + std::chrono::milliseconds(5000);
} catch (...) {
_dirty_ts = std::chrono::high_resolution_clock::now() + std::chrono::milliseconds(5000);
}
}
// If this is a source and active or visible, capture it.
if ((_type == texture_type::Source) && (_active || _visible) && _source_rendertarget) {
auto source = _source.lock();
#ifdef ENABLE_PROFILING
::streamfx::obs::gs::debug_marker profiler1{::streamfx::obs::gs::debug_color_capture, "Parameter '%s'",
get_key().data()};
::streamfx::obs::gs::debug_marker profiler2{::streamfx::obs::gs::debug_color_capture, "Capture '%s'",
source.name().data()};
#endif
uint32_t width = source.width();
uint32_t height = source.height();
auto op = _source_rendertarget->render(width, height);
gs_matrix_push();
gs_ortho(0, static_cast<float>(width), 0, static_cast<float>(height), 0, 1);
// ToDo: Figure out if this breaks some sources.
gs_blend_state_push();
gs_blend_function(GS_BLEND_ONE, GS_BLEND_ZERO);
gs_enable_blending(false);
gs_enable_color(true, true, true, true);
obs_source_video_render(source.get());
gs_blend_state_pop();
gs_matrix_pop();
}
if (_type == texture_type::Source) {
if (_source_rendertarget) {
auto tex = _source_rendertarget->get_texture();
if (tex) {
get_parameter().set_texture(_source_rendertarget->get_texture(), false);
} else {
get_parameter().set_texture(nullptr, false);
}
} else {
get_parameter().set_texture(nullptr, false);
}
} else if (_type == texture_type::File) {
if (_file_texture) {
// Loaded files are always linear.
get_parameter().set_texture(_file_texture, false);
} else {
get_parameter().set_texture(nullptr, false);
}
}
}
void streamfx::gfx::shader::texture_parameter::visible(bool visible)
{
_visible = visible;
if (visible) {
auto source = _source.lock();
if (source) {
_source_visible = ::streamfx::obs::source_showing_reference::add_showing_reference(source);
}
} else {
_source_visible.reset();
}
}
void streamfx::gfx::shader::texture_parameter::active(bool active)
{
_active = active;
if (active) {
auto source = _source.lock();
if (source) {
_source_active = ::streamfx::obs::source_active_reference::add_active_reference(source);
}
} else {
_source_active.reset();
}
}