PlayerProxy.cpp

/*
 * MIT License
 *
 * Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
 *
 * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "Common/config.h"
#include "PlayerProxy.h"
#include "Util/mini.h"
#include "Util/MD5.h"
#include "Util/logger.h"
#include "Extension/AAC.h"

using namespace toolkit;

namespace mediakit {

static uint8_t s_mute_adts[] = {0xff, 0xf1, 0x6c, 0x40, 0x2d, 0x3f, 0xfc, 0x00, 0xe0, 0x34, 0x20, 0xad, 0xf2, 0x3f, 0xb5, 0xdd,
                                0x73, 0xac, 0xbd, 0xca, 0xd7, 0x7d, 0x4a, 0x13, 0x2d, 0x2e, 0xa2, 0x62, 0x02, 0x70, 0x3c, 0x1c,
                                0xc5, 0x63, 0x55, 0x69, 0x94, 0xb5, 0x8d, 0x70, 0xd7, 0x24, 0x6a, 0x9e, 0x2e, 0x86, 0x24, 0xea,
                                0x4f, 0xd4, 0xf8, 0x10, 0x53, 0xa5, 0x4a, 0xb2, 0x9a, 0xf0, 0xa1, 0x4f, 0x2f, 0x66, 0xf9, 0xd3,
                                0x8c, 0xa6, 0x97, 0xd5, 0x84, 0xac, 0x09, 0x25, 0x98, 0x0b, 0x1d, 0x77, 0x04, 0xb8, 0x55, 0x49,
                                0x85, 0x27, 0x06, 0x23, 0x58, 0xcb, 0x22, 0xc3, 0x20, 0x3a, 0x12, 0x09, 0x48, 0x24, 0x86, 0x76,
                                0x95, 0xe3, 0x45, 0x61, 0x43, 0x06, 0x6b, 0x4a, 0x61, 0x14, 0x24, 0xa9, 0x16, 0xe0, 0x97, 0x34,
                                0xb6, 0x58, 0xa4, 0x38, 0x34, 0x90, 0x19, 0x5d, 0x00, 0x19, 0x4a, 0xc2, 0x80, 0x4b, 0xdc, 0xb7,
                                0x00, 0x18, 0x12, 0x3d, 0xd9, 0x93, 0xee, 0x74, 0x13, 0x95, 0xad, 0x0b, 0x59, 0x51, 0x0e, 0x99,
                                0xdf, 0x49, 0x98, 0xde, 0xa9, 0x48, 0x4b, 0xa5, 0xfb, 0xe8, 0x79, 0xc9, 0xe2, 0xd9, 0x60, 0xa5,
                                0xbe, 0x74, 0xa6, 0x6b, 0x72, 0x0e, 0xe3, 0x7b, 0x28, 0xb3, 0x0e, 0x52, 0xcc, 0xf6, 0x3d, 0x39,
                                0xb7, 0x7e, 0xbb, 0xf0, 0xc8, 0xce, 0x5c, 0x72, 0xb2, 0x89, 0x60, 0x33, 0x7b, 0xc5, 0xda, 0x49,
                                0x1a, 0xda, 0x33, 0xba, 0x97, 0x9e, 0xa8, 0x1b, 0x6d, 0x5a, 0x77, 0xb6, 0xf1, 0x69, 0x5a, 0xd1,
                                0xbd, 0x84, 0xd5, 0x4e, 0x58, 0xa8, 0x5e, 0x8a, 0xa0, 0xc2, 0xc9, 0x22, 0xd9, 0xa5, 0x53, 0x11,
                                0x18, 0xc8, 0x3a, 0x39, 0xcf, 0x3f, 0x57, 0xb6, 0x45, 0x19, 0x1e, 0x8a, 0x71, 0xa4, 0x46, 0x27,
                                0x9e, 0xe9, 0xa4, 0x86, 0xdd, 0x14, 0xd9, 0x4d, 0xe3, 0x71, 0xe3, 0x26, 0xda, 0xaa, 0x17, 0xb4,
                                0xac, 0xe1, 0x09, 0xc1, 0x0d, 0x75, 0xba, 0x53, 0x0a, 0x37, 0x8b, 0xac, 0x37, 0x39, 0x41, 0x27,
                                0x6a, 0xf0, 0xe9, 0xb4, 0xc2, 0xac, 0xb0, 0x39, 0x73, 0x17, 0x64, 0x95, 0xf4, 0xdc, 0x33, 0xbb,
                                0x84, 0x94, 0x3e, 0xf8, 0x65, 0x71, 0x60, 0x7b, 0xd4, 0x5f, 0x27, 0x79, 0x95, 0x6a, 0xba, 0x76,
                                0xa6, 0xa5, 0x9a, 0xec, 0xae, 0x55, 0x3a, 0x27, 0x48, 0x23, 0xcf, 0x5c, 0x4d, 0xbc, 0x0b, 0x35,
                                0x5c, 0xa7, 0x17, 0xcf, 0x34, 0x57, 0xc9, 0x58, 0xc5, 0x20, 0x09, 0xee, 0xa5, 0xf2, 0x9c, 0x6c,
                                0x39, 0x1a, 0x77, 0x92, 0x9b, 0xff, 0xc6, 0xae, 0xf8, 0x36, 0xba, 0xa8, 0xaa, 0x6b, 0x1e, 0x8c,
                                0xc5, 0x97, 0x39, 0x6a, 0xb8, 0xa2, 0x55, 0xa8, 0xf8};
#define MUTE_ADTS_DATA s_mute_adts
#define MUTE_ADTS_DATA_LEN sizeof(s_mute_adts)
#define MUTE_ADTS_DATA_MS 130

PlayerProxy::PlayerProxy(const string &strVhost,
                         const string &strApp,
                         const string &strSrc,
                         bool bEnableHls,
                         bool bEnableMp4,
                         int iRetryCount,
						 const EventPoller::Ptr &poller) : MediaPlayer(poller){
	_strVhost = strVhost;
	_strApp = strApp;
	_strSrc = strSrc;
    _bEnableHls = bEnableHls;
    _bEnableMp4 = bEnableMp4;
    _iRetryCount = iRetryCount;
}

void PlayerProxy::setPlayCallbackOnce(const function<void(const SockException &ex)> &cb){
    _playCB = cb;
}

void PlayerProxy::setOnClose(const function<void()> &cb){
    _onClose = cb;
}

void PlayerProxy::play(const string &strUrlTmp) {
	weak_ptr<PlayerProxy> weakSelf = shared_from_this();
	std::shared_ptr<int> piFailedCnt(new int(0)); //连续播放失败次数
	setOnPlayResult([weakSelf,strUrlTmp,piFailedCnt](const SockException &err) {
		auto strongSelf = weakSelf.lock();
		if(!strongSelf) {
			return;
		}

		if(strongSelf->_playCB) {
            strongSelf->_playCB(err);
            strongSelf->_playCB = nullptr;
        }

		if(!err) {
			// 播放成功
			*piFailedCnt = 0;//连续播放失败次数清0
			strongSelf->onPlaySuccess();
		}else if(*piFailedCnt < strongSelf->_iRetryCount || strongSelf->_iRetryCount < 0) {
			// 播放失败，延时重试播放
			strongSelf->rePlay(strUrlTmp,(*piFailedCnt)++);
		}
	});
	setOnShutdown([weakSelf,strUrlTmp,piFailedCnt](const SockException &err) {
		auto strongSelf = weakSelf.lock();
		if(!strongSelf) {
			return;
		}
		if(strongSelf->_mediaMuxer) {
			auto tracks = strongSelf->getTracks(false);
			for (auto & track : tracks){
				track->delDelegate(strongSelf->_mediaMuxer.get());
			}
			strongSelf->_mediaMuxer.reset();
		}
		//播放异常中断，延时重试播放
		if(*piFailedCnt < strongSelf->_iRetryCount || strongSelf->_iRetryCount < 0) {
			strongSelf->rePlay(strUrlTmp,(*piFailedCnt)++);
		}
	});
	MediaPlayer::play(strUrlTmp);

	MediaSource::Ptr mediaSource;
	if(dynamic_pointer_cast<RtspPlayer>(_parser)){
		//rtsp拉流
		GET_CONFIG(bool,directProxy,Rtsp::kDirectProxy);
		if(directProxy){
			mediaSource = std::make_shared<RtspMediaSource>(_strVhost,_strApp,_strSrc);
		}
	}else if(dynamic_pointer_cast<RtmpPlayer>(_parser)){
		//rtmp拉流
		mediaSource = std::make_shared<RtmpMediaSource>(_strVhost,_strApp,_strSrc);
	}
	if(mediaSource){
		setMediaSouce(mediaSource);
		mediaSource->setListener(shared_from_this());
	}
}

PlayerProxy::~PlayerProxy() {
	_timer.reset();
}
void PlayerProxy::rePlay(const string &strUrl,int iFailedCnt){
	auto iDelay = MAX(2 * 1000, MIN(iFailedCnt * 3000,60*1000));
	weak_ptr<PlayerProxy> weakSelf = shared_from_this();
	_timer = std::make_shared<Timer>(iDelay / 1000.0f,[weakSelf,strUrl,iFailedCnt]() {
		//播放失败次数越多，则延时越长
		auto strongPlayer = weakSelf.lock();
		if(!strongPlayer) {
			return false;
		}
		WarnL << "重试播放[" << iFailedCnt << "]:"  << strUrl;
		strongPlayer->MediaPlayer::play(strUrl);
		return false;
	}, getPoller());
}

int PlayerProxy::readerCount(){
	return (_mediaMuxer ? _mediaMuxer->readerCount() : 0) + (_pMediaSrc ? _pMediaSrc->readerCount() : 0);
}

bool PlayerProxy::close(MediaSource &sender,bool force) {
    if(!force && readerCount() != 0){
        return false;
    }

	//通知其停止推流
	weak_ptr<PlayerProxy> weakSlef = dynamic_pointer_cast<PlayerProxy>(shared_from_this());
	getPoller()->async_first([weakSlef]() {
		auto stronSelf = weakSlef.lock();
		if (stronSelf) {
			stronSelf->_mediaMuxer.reset();
			stronSelf->setMediaSouce(nullptr);
			stronSelf->teardown();
			if(stronSelf->_onClose){
                stronSelf->_onClose();
			}
		}
	});
    WarnL << sender.getSchema() << "/" << sender.getVhost() << "/" << sender.getApp() << "/" << sender.getId() << " " << force;
    return true;
}

void PlayerProxy::onNoneReader(MediaSource &sender) {
    if(!_mediaMuxer || _mediaMuxer->readerCount() != 0){
        return;
    }
    MediaSourceEvent::onNoneReader(sender);
}

class MuteAudioMaker : public FrameRingInterfaceDelegate{
public:
	typedef std::shared_ptr<MuteAudioMaker> Ptr;

	MuteAudioMaker(){};
	virtual ~MuteAudioMaker(){}
	void inputFrame(const Frame::Ptr &frame) override {
		if(frame->getTrackType() == TrackVideo){
			auto iAudioIndex = frame->stamp() / MUTE_ADTS_DATA_MS;
			if(_iAudioIndex != iAudioIndex){
				_iAudioIndex = iAudioIndex;
				auto aacFrame = std::make_shared<AACFrameNoCopyAble>((char *)MUTE_ADTS_DATA,
																	 MUTE_ADTS_DATA_LEN,
																	  _iAudioIndex * MUTE_ADTS_DATA_MS);
				FrameRingInterfaceDelegate::inputFrame(aacFrame);
			}
		}
	}
private:
	int _iAudioIndex = 0;
};

void PlayerProxy::onPlaySuccess() {
	if (dynamic_pointer_cast<RtspMediaSource>(_pMediaSrc)) {
		//rtsp拉流代理
		_mediaMuxer.reset(new MultiMediaSourceMuxer(_strVhost, _strApp, _strSrc, getDuration(), _bEnableHls, _bEnableMp4 , true, false));
	} else if (dynamic_pointer_cast<RtmpMediaSource>(_pMediaSrc)) {
		//rtmp拉流代理
		_mediaMuxer.reset(new MultiMediaSourceMuxer(_strVhost, _strApp, _strSrc, getDuration(), _bEnableHls, _bEnableMp4 , false, true));
	} else {
		//其他拉流代理
		_mediaMuxer.reset(new MultiMediaSourceMuxer(_strVhost, _strApp, _strSrc, getDuration(), _bEnableHls, _bEnableMp4 , true, true));
	}
	_mediaMuxer->setListener(shared_from_this());

	auto videoTrack = getTrack(TrackVideo,false);
	if(videoTrack){
		//添加视频
		_mediaMuxer->addTrack(videoTrack);
		//视频数据写入_mediaMuxer
		videoTrack->addDelegate(_mediaMuxer);
	}

	auto audioTrack = getTrack(TrackAudio, false);
	if(audioTrack){
		//添加音频
		_mediaMuxer->addTrack(audioTrack);
		//音频数据写入_mediaMuxer
        audioTrack->addDelegate(_mediaMuxer);
    }else if(videoTrack){
		//没有音频信息，产生一个静音音频
		MuteAudioMaker::Ptr audioMaker = std::make_shared<MuteAudioMaker>();
		//videoTrack把数据写入MuteAudioMaker
		videoTrack->addDelegate(audioMaker);
		//添加一个静音Track至_mediaMuxer
		_mediaMuxer->addTrack(std::make_shared<AACTrack>());
		//MuteAudioMaker生成静音音频然后写入_mediaMuxer；
		audioMaker->addDelegate(_mediaMuxer);
	}
}


} /* namespace mediakit */