mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-06 12:13:49 +08:00
119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef FFMpegDecoder_H_
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#define FFMpegDecoder_H_
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#include "Util/TimeTicker.h"
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#include "Common/MediaSink.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "libavcodec/avcodec.h"
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#include "libswresample/swresample.h"
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#ifdef __cplusplus
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}
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#endif
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class FFmpegFrame {
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public:
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using Ptr = std::shared_ptr<FFmpegFrame>;
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FFmpegFrame(std::shared_ptr<AVFrame> frame = nullptr);
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~FFmpegFrame();
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AVFrame *get() const;
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private:
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char *_data = nullptr;
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std::shared_ptr<AVFrame> _frame;
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};
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class FFmpegSwr {
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public:
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using Ptr = std::shared_ptr<FFmpegSwr>;
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FFmpegSwr(AVSampleFormat output, int channel, int channel_layout, int samplerate);
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~FFmpegSwr();
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FFmpegFrame::Ptr inputFrame(const FFmpegFrame::Ptr &frame);
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private:
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int _target_channels;
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int _target_channel_layout;
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int _target_samplerate;
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AVSampleFormat _target_format;
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SwrContext *_ctx = nullptr;
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};
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class TaskManager {
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public:
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TaskManager() = default;
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~TaskManager();
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protected:
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void startThread(const string &name);
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void stopThread();
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void addEncodeTask(function<void()> task);
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void addDecodeTask(bool key_frame, function<void()> task);
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bool isEnabled() const;
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private:
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void onThreadRun(const string &name);
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void pushExit();
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private:
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class ThreadExitException : public std::runtime_error {
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public:
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ThreadExitException() : std::runtime_error("exit") {}
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~ThreadExitException() = default;
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};
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private:
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bool _decode_drop_start = false;
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bool _exit = false;
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mutex _task_mtx;
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semaphore _sem;
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List<function<void()> > _task;
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std::shared_ptr<thread> _thread;
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};
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class FFmpegDecoder : public FrameWriterInterface, private TaskManager {
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public:
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using Ptr = std::shared_ptr<FFmpegDecoder>;
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using onDec = function<void(const FFmpegFrame::Ptr &)>;
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FFmpegDecoder(const Track::Ptr &track);
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~FFmpegDecoder();
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void inputFrame(const Frame::Ptr &frame) override;
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void setOnDecode(onDec cb);
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void flush();
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const AVCodecContext *getContext() const;
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private:
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void onDecode(const FFmpegFrame::Ptr &frame);
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void inputFrame_l(const Frame::Ptr &frame);
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void decodeFrame(const char *data, size_t size, uint32_t dts, uint32_t pts);
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private:
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bool _do_merger = false;
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Ticker _ticker;
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onDec _cb;
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std::shared_ptr<AVCodecContext> _context;
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FrameMerger _merger{FrameMerger::h264_prefix};
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};
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#endif /* FFMpegDecoder_H_ */
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