mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-27 13:49:01 +08:00
257 lines
7.8 KiB
C++
257 lines
7.8 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/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_MEDIASOURCE_H
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#define ZLMEDIAKIT_MEDIASOURCE_H
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#include <mutex>
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#include <string>
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#include <memory>
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#include <functional>
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#include <unordered_map>
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#include "Common/config.h"
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#include "Common/Parser.h"
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#include "Util/logger.h"
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#include "Util/TimeTicker.h"
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#include "Util/NoticeCenter.h"
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#include "Util/List.h"
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#include "Rtsp/Rtsp.h"
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#include "Rtmp/Rtmp.h"
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#include "Extension/Track.h"
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#include "Record/Recorder.h"
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using namespace std;
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using namespace toolkit;
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namespace toolkit{
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class TcpSession;
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}// namespace toolkit
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namespace mediakit {
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class MediaSource;
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class MediaSourceEvent{
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public:
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friend class MediaSource;
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MediaSourceEvent(){};
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virtual ~MediaSourceEvent(){};
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// 通知拖动进度条
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virtual bool seekTo(MediaSource &sender, uint32_t stamp) { return false; }
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// 通知其停止产生流
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virtual bool close(MediaSource &sender, bool force) { return false; }
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// 获取观看总人数
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virtual int totalReaderCount(MediaSource &sender) = 0;
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// 通知无人观看
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virtual void onNoneReader(MediaSource &sender);
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//流注册或注销事件
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virtual void onRegist(MediaSource &sender, bool regist) {};
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////////////////////////仅供MultiMediaSourceMuxer对象继承////////////////////////
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// 开启或关闭录制
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virtual bool setupRecord(MediaSource &sender, Recorder::type type, bool start, const string &custom_path) { return false; };
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// 获取录制状态
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virtual bool isRecording(MediaSource &sender, Recorder::type type) { return false; };
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// 获取所有track相关信息
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virtual vector<Track::Ptr> getTracks(MediaSource &sender, bool trackReady = true) const { return vector<Track::Ptr>(); };
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private:
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Timer::Ptr _async_close_timer;
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};
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//该对象用于拦截感兴趣的MediaSourceEvent事件
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class MediaSourceEventInterceptor : public MediaSourceEvent{
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public:
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MediaSourceEventInterceptor(){}
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~MediaSourceEventInterceptor() override {}
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bool seekTo(MediaSource &sender, uint32_t stamp) override;
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bool close(MediaSource &sender, bool force) override;
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int totalReaderCount(MediaSource &sender) override;
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void onNoneReader(MediaSource &sender) override;
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void onRegist(MediaSource &sender, bool regist) override;
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bool setupRecord(MediaSource &sender, Recorder::type type, bool start, const string &custom_path) override;
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bool isRecording(MediaSource &sender, Recorder::type type) override;
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vector<Track::Ptr> getTracks(MediaSource &sender, bool trackReady = true) const override;
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protected:
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std::weak_ptr<MediaSourceEvent> _listener;
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};
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/**
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* 解析url获取媒体相关信息
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*/
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class MediaInfo{
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public:
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~MediaInfo() {}
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MediaInfo() {}
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MediaInfo(const string &url) { parse(url); }
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void parse(const string &url);
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public:
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string _schema;
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string _host;
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string _port;
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string _vhost;
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string _app;
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string _streamid;
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string _param_strs;
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};
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/**
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* 媒体源，任何rtsp/rtmp的直播流都源自该对象
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*/
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class MediaSource: public TrackSource, public enable_shared_from_this<MediaSource> {
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public:
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typedef std::shared_ptr<MediaSource> Ptr;
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typedef unordered_map<string, weak_ptr<MediaSource> > StreamMap;
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typedef unordered_map<string, StreamMap > AppStreamMap;
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typedef unordered_map<string, AppStreamMap > VhostAppStreamMap;
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typedef unordered_map<string, VhostAppStreamMap > SchemaVhostAppStreamMap;
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MediaSource(const string &schema, const string &vhost, const string &app, const string &stream_id) ;
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virtual ~MediaSource() ;
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////////////////获取MediaSource相关信息////////////////
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// 获取协议类型
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const string& getSchema() const;
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// 虚拟主机
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const string& getVhost() const;
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// 应用名
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const string& getApp() const;
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// 流id
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const string& getId() const;
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// 获取所有Track
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vector<Track::Ptr> getTracks(bool ready = true) const override;
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// 获取流当前时间戳
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virtual uint32_t getTimeStamp(TrackType type) { return 0; };
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// 设置时间戳
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virtual void setTimeStamp(uint32_t stamp) {};
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////////////////MediaSourceEvent相关接口实现////////////////
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// 设置监听者
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void setListener(const std::weak_ptr<MediaSourceEvent> &listener);
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// 获取监听者
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const std::weak_ptr<MediaSourceEvent>& getListener() const;
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// 本协议获取观看者个数，可能返回本协议的观看人数，也可能返回总人数
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virtual int readerCount() = 0;
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// 观看者个数，包括(hls/rtsp/rtmp)
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virtual int totalReaderCount();
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// 拖动进度条
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bool seekTo(uint32_t stamp);
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// 关闭该流
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bool close(bool force);
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// 该流无人观看
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void onNoneReader();
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// 开启或关闭录制
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bool setupRecord(Recorder::type type, bool start, const string &custom_path);
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// 获取录制状态
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bool isRecording(Recorder::type type);
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////////////////static方法，查找或生成MediaSource////////////////
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// 同步查找流
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static Ptr find(const string &schema, const string &vhost, const string &app, const string &id);
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// 异步查找流
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static void findAsync(const MediaInfo &info, const std::shared_ptr<TcpSession> &session, const function<void(const Ptr &src)> &cb);
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// 遍历所有流
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static void for_each_media(const function<void(const Ptr &src)> &cb);
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// 从mp4文件生成MediaSource
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static MediaSource::Ptr createFromMP4(const string &schema, const string &vhost, const string &app, const string &stream, const string &file_path = "", bool check_app = true);
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protected:
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//媒体注册
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void regist();
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private:
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//媒体注销
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bool unregist();
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//触发媒体事件
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void emitEvent(bool regist);
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private:
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string _schema;
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string _vhost;
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string _app;
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string _stream_id;
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std::weak_ptr<MediaSourceEvent> _listener;
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};
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///缓存刷新策略类
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class FlushPolicy {
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public:
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FlushPolicy() = default;
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~FlushPolicy() = default;
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uint32_t getStamp(const RtpPacket::Ptr &packet) {
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return packet->timeStamp;
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}
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uint32_t getStamp(const RtmpPacket::Ptr &packet) {
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return packet->time_stamp;
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}
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bool isFlushAble(bool is_video, bool is_key, uint32_t new_stamp, int cache_size);
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private:
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uint32_t _last_stamp[2] = {0, 0};
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};
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/// 合并写缓存模板
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/// \tparam packet 包类型
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/// \tparam policy 刷新缓存策略
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/// \tparam packet_list 包缓存类型
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template<typename packet, typename policy = FlushPolicy, typename packet_list = List<std::shared_ptr<packet> > >
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class PacketCache {
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public:
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PacketCache(){
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_cache = std::make_shared<packet_list>();
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}
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virtual ~PacketCache() = default;
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void inputPacket(bool is_video, const std::shared_ptr<packet> &pkt, bool key_pos) {
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if (_policy.isFlushAble(is_video, key_pos, _policy.getStamp(pkt), _cache->size())) {
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flushAll();
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}
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//追加数据到最后
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_cache->emplace_back(pkt);
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if (key_pos) {
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_key_pos = key_pos;
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}
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}
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virtual void onFlush(std::shared_ptr<packet_list> &, bool key_pos) = 0;
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private:
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void flushAll() {
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if (_cache->empty()) {
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return;
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}
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onFlush(_cache, _key_pos);
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_cache = std::make_shared<packet_list>();
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_key_pos = false;
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}
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private:
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bool _key_pos = false;
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policy _policy;
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std::shared_ptr<packet_list> _cache;
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};
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} /* namespace mediakit */
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#endif //ZLMEDIAKIT_MEDIASOURCE_H
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