ZLMediaKit/src/Rtsp/RtspPlayerImp.h
2020-08-30 11:40:03 +08:00

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/*
* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/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 SRC_RTP_RTPPARSERTESTER_H_
#define SRC_RTP_RTPPARSERTESTER_H_
#include <memory>
#include <algorithm>
#include <functional>
#include "Common/config.h"
#include "RtspPlayer.h"
#include "RtspDemuxer.h"
#include "Poller/Timer.h"
#include "Util/TimeTicker.h"
using namespace std;
using namespace toolkit;
namespace mediakit {
class RtspPlayerImp : public PlayerImp<RtspPlayer,RtspDemuxer> {
public:
typedef std::shared_ptr<RtspPlayerImp> Ptr;
RtspPlayerImp(const EventPoller::Ptr &poller) : PlayerImp<RtspPlayer, RtspDemuxer>(poller) {}
~RtspPlayerImp() override{
DebugL << endl;
}
float getProgress() const override {
if (getDuration() > 0) {
return getProgressMilliSecond() / (getDuration() * 1000);
}
return PlayerBase::getProgress();
}
void seekTo(float fProgress) override {
fProgress = MAX(float(0), MIN(fProgress, float(1.0)));
seekToMilliSecond(fProgress * getDuration() * 1000);
}
private:
//派生类回调函数
bool onCheckSDP(const string &sdp) override {
_rtsp_media_src = dynamic_pointer_cast<RtspMediaSource>(_pMediaSrc);
if (_rtsp_media_src) {
_rtsp_media_src->setSdp(sdp);
}
_delegate.reset(new RtspDemuxer);
_delegate->loadSdp(sdp);
return true;
}
void onRecvRTP(const RtpPacket::Ptr &rtp, const SdpTrack::Ptr &track) override {
if (_rtsp_media_src) {
// rtsp直接代理是无法判断该rtp是否是I帧所以GOP缓存基本是无效的
// 为了减少内存使用那么我们设置为一直关键帧以便清空GOP缓存
_rtsp_media_src->onWrite(rtp, true);
}
_delegate->inputRtp(rtp);
if (_max_analysis_ms && _delegate->isInited(_max_analysis_ms)) {
PlayerImp<RtspPlayer, RtspDemuxer>::onPlayResult(SockException(Err_success, "play rtsp success"));
_max_analysis_ms = 0;
}
}
//在RtspPlayer中触发onPlayResult事件只是代表收到play回复了
//并不代表所有track初始化成功了(这跟rtmp播放器不一样)
//如果sdp里面信息不完整只能尝试延后从rtp中恢复关键信息并初始化track
//如果超过这个时间还未获取成功那么会强制触发onPlayResult事件(虽然此时有些track还未初始化成功)
void onPlayResult(const SockException &ex) override {
//isInited判断条件无超时
if (ex || _delegate->isInited(0)) {
//已经初始化成功说明sdp里面有完善的信息
PlayerImp<RtspPlayer, RtspDemuxer>::onPlayResult(ex);
} else {
//还没初始化成功说明sdp里面信息不完善还有一些track未初始化成功
_max_analysis_ms = (*this)[Client::kMaxAnalysisMS];
}
}
private:
int _max_analysis_ms = 0;
RtspMediaSource::Ptr _rtsp_media_src;
};
} /* namespace mediakit */
#endif /* SRC_RTP_RTPPARSERTESTER_H_ */