obs-StreamFX/source/encoders/ffmpeg-encoder.hpp

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// FFMPEG Video Encoder Integration for OBS Studio
// Copyright (c) 2019 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.
#pragma once
#include "common.hpp"
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#include <condition_variable>
#include <map>
#include <mutex>
#include <queue>
#include <stack>
#include <thread>
#include <vector>
#include "ffmpeg/avframe-queue.hpp"
#include "ffmpeg/hwapi/base.hpp"
#include "ffmpeg/swscale.hpp"
#include "handlers/handler.hpp"
extern "C" {
#ifdef _MSC_VER
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#pragma warning(push)
#pragma warning(disable : 4242 4244 4365)
#endif
#include <obs-properties.h>
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#include <libavcodec/avcodec.h>
#include <libavutil/frame.h>
#ifdef _MSC_VER
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#pragma warning(pop)
#endif
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}
namespace encoder::ffmpeg {
class ffmpeg_factory;
class ffmpeg_manager {
static ::std::shared_ptr<ffmpeg_manager> _instance;
public: // Singleton
static void initialize()
{
_instance = ::std::make_shared<ffmpeg_manager>();
_instance->register_encoders();
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}
static void finalize()
{
_instance.reset();
}
static std::shared_ptr<ffmpeg_manager> get()
{
return _instance;
}
private:
std::map<const AVCodec*, std::shared_ptr<ffmpeg_factory>> _factories;
std::map<std::string, std::shared_ptr<handler::handler>> _handlers;
std::shared_ptr<handler::handler> _debug_handler;
public:
ffmpeg_manager();
~ffmpeg_manager();
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void register_handler(std::string codec, std::shared_ptr<handler::handler> handler);
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std::shared_ptr<handler::handler> get_handler(std::string codec);
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bool has_handler(std::string codec);
void register_encoders();
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};
struct ffmpeg_info {
std::string uid;
std::string codec;
std::string readable_name;
obs_encoder_info oei = {0};
};
class ffmpeg_factory {
ffmpeg_info info;
ffmpeg_info info_fallback;
const AVCodec* avcodec_ptr;
std::shared_ptr<handler::handler> _handler;
public:
ffmpeg_factory(const AVCodec* codec);
virtual ~ffmpeg_factory();
void register_encoder();
void get_defaults(obs_data_t* settings, bool hw_encoder = false);
void get_properties(obs_properties_t* props, bool hw_encoder = false);
const AVCodec* get_avcodec();
const ffmpeg_info& get_info();
const ffmpeg_info& get_fallback();
};
class ffmpeg_instance {
obs_encoder_t* _self;
ffmpeg_factory* _factory;
const AVCodec* _codec;
AVCodecContext* _context;
std::shared_ptr<handler::handler> _handler;
std::shared_ptr<::ffmpeg::hwapi::base> _hwapi;
std::shared_ptr<::ffmpeg::hwapi::instance> _hwinst;
::ffmpeg::swscale _swscale;
AVPacket _current_packet;
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std::size_t _lag_in_frames;
std::size_t _count_send_frames;
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// Extra Data
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bool _have_first_frame;
std::vector<std::uint8_t> _extra_data;
std::vector<std::uint8_t> _sei_data;
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// Frame Stack and Queue
std::stack<std::shared_ptr<AVFrame>> _free_frames;
std::queue<std::shared_ptr<AVFrame>> _used_frames;
std::chrono::high_resolution_clock::time_point _free_frames_last_used;
void initialize_sw(obs_data_t* settings);
void initialize_hw(obs_data_t* settings);
void push_free_frame(std::shared_ptr<AVFrame> frame);
std::shared_ptr<AVFrame> pop_free_frame();
void push_used_frame(std::shared_ptr<AVFrame> frame);
std::shared_ptr<AVFrame> pop_used_frame();
public:
ffmpeg_instance(obs_data_t* settings, obs_encoder_t* encoder, bool is_texture_encode = false);
virtual ~ffmpeg_instance();
public: // OBS API
// Shared
void get_properties(obs_properties_t* props, bool hw_encode = false);
bool update(obs_data_t* settings);
// Audio only
void get_audio_info(struct audio_convert_info* info);
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std::size_t get_frame_size();
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bool audio_encode(struct encoder_frame* frame, struct encoder_packet* packet, bool* received_packet);
// Video only
void get_video_info(struct video_scale_info* info);
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bool get_sei_data(std::uint8_t** sei_data, size_t* size);
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bool get_extra_data(std::uint8_t** extra_data, size_t* size);
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bool video_encode(struct encoder_frame* frame, struct encoder_packet* packet, bool* received_packet);
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bool video_encode_texture(std::uint32_t handle, std::int64_t pts, std::uint64_t lock_key,
std::uint64_t* next_key, struct encoder_packet* packet, bool* received_packet);
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int receive_packet(bool* received_packet, struct encoder_packet* packet);
int send_frame(std::shared_ptr<AVFrame> frame);
bool encode_avframe(std::shared_ptr<AVFrame> frame, struct encoder_packet* packet, bool* received_packet);
public: // Handler API
bool is_hardware_encode();
const AVCodec* get_avcodec();
const AVCodecContext* get_avcodeccontext();
void parse_ffmpeg_commandline(std::string text);
};
} // namespace encoder::ffmpeg