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

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// FFMPEG Video Encoder Integration for OBS Studio
// Copyright (c) 2019-2022 Michael Fabian Dirks <info@xaymar.com>
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//
// 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"
#include "ffmpeg/avframe-queue.hpp"
#include "ffmpeg/hwapi/base.hpp"
#include "ffmpeg/swscale.hpp"
#include "handlers/handler.hpp"
#include "obs/obs-encoder-factory.hpp"
#include "warning-disable.hpp"
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#include <condition_variable>
#include <map>
#include <mutex>
#include <queue>
#include <stack>
#include <thread>
#include <vector>
#include "warning-enable.hpp"
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extern "C" {
#include "warning-disable.hpp"
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#include <libavcodec/avcodec.h>
#include <libavutil/frame.h>
#include "warning-enable.hpp"
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}
namespace streamfx::encoder::ffmpeg {
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class ffmpeg_factory;
class ffmpeg_instance : public obs::encoder_instance {
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ffmpeg_factory* _factory;
const AVCodec* _codec;
AVCodecContext* _context;
std::shared_ptr<handler::handler> _handler;
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::streamfx::ffmpeg::swscale _scaler;
std::shared_ptr<AVPacket> _packet;
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std::shared_ptr<::streamfx::ffmpeg::hwapi::base> _hwapi;
std::shared_ptr<::streamfx::ffmpeg::hwapi::instance> _hwinst;
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std::size_t _lag_in_frames;
std::size_t _sent_frames;
std::size_t _framerate_divisor;
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// Extra Data
bool _have_first_frame;
std::vector<uint8_t> _extra_data;
std::vector<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;
public:
ffmpeg_instance(obs_data_t* settings, obs_encoder_t* self, bool is_hw);
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virtual ~ffmpeg_instance();
public:
void get_properties(obs_properties_t* props);
void migrate(obs_data_t* settings, uint64_t version) override;
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bool update(obs_data_t* settings) override;
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bool encode_audio(struct encoder_frame* frame, struct encoder_packet* packet, bool* received_packet) override;
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bool encode_video(struct encoder_frame* frame, struct encoder_packet* packet, bool* received_packet) override;
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bool encode_video(uint32_t handle, int64_t pts, uint64_t lock_key, uint64_t* next_key,
struct encoder_packet* packet, bool* received_packet) override;
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bool get_extra_data(uint8_t** extra_data, size_t* size) override;
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bool get_sei_data(uint8_t** sei_data, size_t* size) override;
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void get_video_info(struct video_scale_info* info) override;
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public:
void initialize_sw(obs_data_t* settings);
void initialize_hw(obs_data_t* settings);
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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();
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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_view text);
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};
class ffmpeg_factory : public obs::encoder_factory<ffmpeg_factory, ffmpeg_instance> {
std::string _id;
std::string _codec;
std::string _name;
const AVCodec* _avcodec;
std::shared_ptr<handler::handler> _handler;
public:
ffmpeg_factory(const AVCodec* codec);
virtual ~ffmpeg_factory();
const char* get_name() override;
void get_defaults2(obs_data_t* data) override;
void migrate(obs_data_t* data, uint64_t version) override;
obs_properties_t* get_properties2(instance_t* data) override;
#ifdef ENABLE_FRONTEND
static bool on_manual_open(obs_properties_t* props, obs_property_t* property, void* data);
#endif
public:
const AVCodec* get_avcodec();
obs_encoder_info* get_info();
};
class ffmpeg_manager {
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();
void register_encoders();
void register_handler(std::string codec, std::shared_ptr<handler::handler> handler);
std::shared_ptr<handler::handler> get_handler(std::string codec);
bool has_handler(std::string_view codec);
public: // Singleton
static void initialize();
static void finalize();
static std::shared_ptr<ffmpeg_manager> get();
};
} // namespace streamfx::encoder::ffmpeg