mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-30 07:26:53 +08:00
119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
|
|
*
|
|
* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
|
|
*
|
|
* Use of this source code is governed by MIT license that can be found in the
|
|
* LICENSE file in the root of the source tree. All contributing project authors
|
|
* may be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef FFMpegDecoder_H_
|
|
#define FFMpegDecoder_H_
|
|
|
|
#include "Util/TimeTicker.h"
|
|
#include "Common/MediaSink.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
#include "libavcodec/avcodec.h"
|
|
#include "libswresample/swresample.h"
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
class FFmpegFrame {
|
|
public:
|
|
using Ptr = std::shared_ptr<FFmpegFrame>;
|
|
|
|
FFmpegFrame(std::shared_ptr<AVFrame> frame = nullptr);
|
|
~FFmpegFrame();
|
|
|
|
AVFrame *get() const;
|
|
|
|
private:
|
|
char *_data = nullptr;
|
|
std::shared_ptr<AVFrame> _frame;
|
|
};
|
|
|
|
class FFmpegSwr {
|
|
public:
|
|
using Ptr = std::shared_ptr<FFmpegSwr>;
|
|
|
|
FFmpegSwr(AVSampleFormat output, int channel, int channel_layout, int samplerate);
|
|
~FFmpegSwr();
|
|
|
|
FFmpegFrame::Ptr inputFrame(const FFmpegFrame::Ptr &frame);
|
|
|
|
private:
|
|
int _target_channels;
|
|
int _target_channel_layout;
|
|
int _target_samplerate;
|
|
AVSampleFormat _target_format;
|
|
SwrContext *_ctx = nullptr;
|
|
};
|
|
|
|
class TaskManager {
|
|
public:
|
|
TaskManager() = default;
|
|
~TaskManager();
|
|
|
|
protected:
|
|
void startThread(const string &name);
|
|
void stopThread();
|
|
|
|
void addEncodeTask(function<void()> task);
|
|
void addDecodeTask(bool key_frame, function<void()> task);
|
|
bool isEnabled() const;
|
|
|
|
private:
|
|
void onThreadRun(const string &name);
|
|
void pushExit();
|
|
|
|
private:
|
|
class ThreadExitException : public std::runtime_error {
|
|
public:
|
|
ThreadExitException() : std::runtime_error("exit") {}
|
|
~ThreadExitException() = default;
|
|
};
|
|
|
|
private:
|
|
bool _decode_drop_start = false;
|
|
bool _exit = false;
|
|
mutex _task_mtx;
|
|
semaphore _sem;
|
|
List<function<void()> > _task;
|
|
std::shared_ptr<thread> _thread;
|
|
};
|
|
|
|
class FFmpegDecoder : private TaskManager {
|
|
public:
|
|
using Ptr = std::shared_ptr<FFmpegDecoder>;
|
|
using onDec = function<void(const FFmpegFrame::Ptr &)>;
|
|
|
|
FFmpegDecoder(const Track::Ptr &track);
|
|
~FFmpegDecoder();
|
|
|
|
bool inputFrame(const Frame::Ptr &frame, bool may_async = true);
|
|
void setOnDecode(onDec cb);
|
|
void flush();
|
|
const AVCodecContext *getContext() const;
|
|
|
|
private:
|
|
void onDecode(const FFmpegFrame::Ptr &frame);
|
|
bool inputFrame_l(const Frame::Ptr &frame);
|
|
bool decodeFrame(const char *data, size_t size, uint32_t dts, uint32_t pts);
|
|
|
|
private:
|
|
bool _do_merger = false;
|
|
Ticker _ticker;
|
|
onDec _cb;
|
|
std::shared_ptr<AVCodecContext> _context;
|
|
FrameMerger _merger{FrameMerger::h264_prefix};
|
|
};
|
|
|
|
#endif /* FFMpegDecoder_H_ */
|
|
|
|
|