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ffmpeg/tools: Helpers for easily populating OBS property lists

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This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2022-02-17 01:50:46 +01:00
parent 881c7d920a
commit 7f6047f43f
2 changed files with 88 additions and 0 deletions
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77
source/ffmpeg/tools.cpp
View file

@ -183,6 +183,83 @@ AVColorTransferCharacteristic streamfx::ffmpeg::tools::obs_to_av_color_transfer_
}
}
const char* tools::avoption_name_from_unit_value(const void* obj, std::string_view unit, int64_t value)
{
for (const AVOption* opt = nullptr; (opt = av_opt_next(obj, opt)) != nullptr;) {
// Skip all irrelevant options.
if (!opt->unit)
continue;
if (opt->unit != unit)
continue;
if (opt->name == unit)
continue;
if (opt->default_val.i64 == value)
return opt->name;
}
return nullptr;
}
bool tools::avoption_exists(const void* obj, std::string_view name)
{
for (const AVOption* opt = nullptr; (opt = av_opt_next(obj, opt)) != nullptr;) {
if (name == opt->name)
return true;
}
return false;
}
void tools::avoption_list_add_entries_unnamed(const void* obj, std::string_view unit, obs_property_t* prop,
std::function<bool(const AVOption*)> filter)
{
for (const AVOption* opt = nullptr; (opt = av_opt_next(obj, opt)) != nullptr;) {
// Skip all irrelevant options.
if (!opt->unit)
continue;
if (opt->unit != unit)
continue;
if (opt->name == unit)
continue;
// Skip any deprecated options.
if (opt->flags & AV_OPT_FLAG_DEPRECATED)
continue;
if (filter && filter(opt))
continue;
// Generate name and add to list.
obs_property_list_add_int(prop, opt->name, opt->default_val.i64);
}
}
void tools::avoption_list_add_entries(const void* obj, std::string_view unit, obs_property_t* prop,
std::string_view prefix, std::function<bool(const AVOption*)> filter)
{
for (const AVOption* opt = nullptr; (opt = av_opt_next(obj, opt)) != nullptr;) {
// Skip all irrelevant options.
if (!opt->unit)
continue;
if (opt->unit != unit)
continue;
if (opt->name == unit)
continue;
// Skip any deprecated options.
if (opt->flags & AV_OPT_FLAG_DEPRECATED)
continue;
// Skip based on filter function.
if (filter && filter(opt))
continue;
// Generate name and add to list.
char buffer[1024];
snprintf(buffer, sizeof(buffer), "%s.%s\0", prefix.data(), opt->name);
obs_property_list_add_int(prop, D_TRANSLATE(buffer), opt->default_val.i64);
}
}
bool tools::can_hardware_encode(const AVCodec* codec)
{
AVPixelFormat hardware_formats[] = {AV_PIX_FMT_D3D11};

11
source/ffmpeg/tools.hpp
View file

@ -29,6 +29,7 @@ extern "C" {
#pragma warning(disable : 4242 4244 4365)
#endif
#include <libavcodec/avcodec.h>
#include <libavutil/opt.h>
#include <libavutil/pixfmt.h>
#ifdef _MSC_VER
#pragma warning(pop)
@ -80,4 +81,14 @@ namespace streamfx::ffmpeg::tools {
void print_av_option_string2(AVCodecContext* ctx_codec, void* ctx_option, std::string_view option,
std::string_view text, std::function<std::string(int64_t, std::string_view)> decoder);
bool avoption_exists(const void* obj, std::string_view name);
const char* avoption_name_from_unit_value(const void* obj, std::string_view unit, int64_t value);
void avoption_list_add_entries_unnamed(const void* obj, std::string_view unit, obs_property_t* prop,
std::function<bool(const AVOption*)> filter = nullptr);
void avoption_list_add_entries(const void* obj, std::string_view unit, obs_property_t* prop,
std::string_view prefix, std::function<bool(const AVOption*)> filter = nullptr);
} // namespace streamfx::ffmpeg::tools