mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
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133 lines
3.5 KiB
C++
133 lines
3.5 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/xiongziliang/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 ZLMEDIAKIT_MEDIASINK_H
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#define ZLMEDIAKIT_MEDIASINK_H
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#include <mutex>
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#include <memory>
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#include "Util/TimeTicker.h"
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#include "Extension/Frame.h"
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#include "Extension/Track.h"
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using namespace std;
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using namespace toolkit;
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namespace mediakit{
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class MediaSinkInterface : public FrameWriterInterface {
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public:
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typedef std::shared_ptr<MediaSinkInterface> Ptr;
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MediaSinkInterface(){};
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virtual ~MediaSinkInterface(){};
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/**
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* 添加track，内部会调用Track的clone方法
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* 只会克隆sps pps这些信息 ，而不会克隆Delegate相关关系
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* @param track
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*/
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virtual void addTrack(const Track::Ptr & track) = 0;
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/**
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* 添加所有Track完毕
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*/
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virtual void addTrackCompleted() {}
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/**
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* 重置track
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*/
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virtual void resetTracks() = 0;
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};
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/**
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* 该类的作用是等待Track ready()返回true也就是就绪后再通知派生类进行下一步的操作
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* 目的是输入Frame前由Track截取处理下，以便获取有效的信息（譬如sps pps aa_cfg）
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*/
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class MediaSink : public MediaSinkInterface , public TrackSource{
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public:
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typedef std::shared_ptr<MediaSink> Ptr;
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MediaSink(){}
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virtual ~MediaSink(){}
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/**
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* 输入frame
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* @param frame
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*/
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void inputFrame(const Frame::Ptr &frame) override;
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/**
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* 添加track，内部会调用Track的clone方法
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* 只会克隆sps pps这些信息 ，而不会克隆Delegate相关关系
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* @param track
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*/
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void addTrack(const Track::Ptr & track) override;
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/**
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* 添加Track完毕，如果是单Track，会最多等待3秒才会触发onAllTrackReady
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* 这样会增加生成流的延时，如果添加了音视频双Track，那么可以不调用此方法
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* 否则为了降低流注册延时，请手动调用此方法
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*/
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void addTrackCompleted() override;
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/**
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* 重置track
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*/
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void resetTracks() override;
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/**
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* 获取所有Track
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* @param trackReady 是否获取已经准备好的Track
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*/
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vector<Track::Ptr> getTracks(bool trackReady = true) const override ;
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protected:
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/**
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* 某track已经准备好，其ready()状态返回true，
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* 此时代表可以获取其例如sps pps等相关信息了
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* @param track
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*/
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virtual void onTrackReady(const Track::Ptr & track) {};
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/**
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* 所有Track已经准备好，
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*/
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virtual void onAllTrackReady() {};
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/**
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* 某Track输出frame，在onAllTrackReady触发后才会调用此方法
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* @param frame
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*/
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virtual void onTrackFrame(const Frame::Ptr &frame) {};
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private:
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/**
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* 触发onAllTrackReady事件
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*/
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void emitAllTrackReady();
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/**
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* 检查track是否准备完毕
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*/
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void checkTrackIfReady(const Track::Ptr &track);
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void checkTrackIfReady_l(const Track::Ptr &track);
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private:
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mutable recursive_mutex _mtx;
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unordered_map<int,Track::Ptr> _track_map;
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unordered_map<int,List<Frame::Ptr> > _frame_unread;
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unordered_map<int,function<void()> > _track_ready_callback;
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bool _all_track_ready = false;
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Ticker _ticker;
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int _max_track_size = 2;
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};
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}//namespace mediakit
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#endif //ZLMEDIAKIT_MEDIASINK_H
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