ZLMediaKit/src/RtspMuxer/RtspMuxer.cpp
2018-10-30 14:59:42 +08:00

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/*
* MIT License
*
* Copyright (c) 2016 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 "RtspMuxer.h"
#include "Extension/Factory.h"
namespace mediakit {
RtspMuxer::RtspMuxer(const TitleSdp::Ptr &title){
if(!title){
_sdp = std::make_shared<TitleSdp>()->getSdp();
} else{
_sdp = title->getSdp();
}
_rtpRing = std::make_shared<RtpRingInterface::RingType>();
}
void RtspMuxer::onTrackReady(const Track::Ptr &track) {
//根据track生产sdp
Sdp::Ptr sdp = Factory::getSdpByTrack(track);
if (!sdp) {
return;
}
uint32_t ssrc = ((uint64_t) sdp.get()) & 0xFFFFFFFF;
auto mtu = (track->getTrackType() == TrackVideo ? 1400 : 600);
// 根据sdp生成rtp编码器ssrc
auto encoder = sdp->createRtpEncoder(ssrc, mtu);
if (!encoder) {
return;
}
//添加其sdp
_sdp.append(sdp->getSdp());
//设置Track的代理这样输入frame至Track时最终数据将输出到RtpEncoder中
track->addDelegate(encoder);
//rtp编码器共用同一个环形缓存
encoder->setRtpRing(_rtpRing);
}
string RtspMuxer::getSdp() {
if(!isAllTrackReady()){
//尚未就绪
return "";
}
return _sdp;
}
RtpRingInterface::RingType::Ptr RtspMuxer::getRtpRing() const {
return _rtpRing;
}
} /* namespace mediakit */