ZLMediaKit/src/Rtmp/RtmpMuxer.cpp

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/*
* 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 "RtmpMuxer.h"
#include "Extension/Factory.h"
namespace mediakit {
RtmpMuxer::RtmpMuxer(const TitleMeta::Ptr &title) {
if(!title){
_metadata = std::make_shared<TitleMeta>()->getMetadata();
}else{
_metadata = title->getMetadata();
}
_rtmpRing = std::make_shared<RtmpRingInterface::RingType>();
}
void RtmpMuxer::onTrackReady(const Track::Ptr &track) {
//生成rtmp编码器
//克隆该Track防止循环引用
auto encoder = Factory::getRtmpCodecByTrack(track->clone());
if (!encoder) {
return;
}
//根据track生产metadata
Metadata::Ptr metadata;
switch (track->getTrackType()){
case TrackVideo:{
metadata = std::make_shared<VideoMeta>(dynamic_pointer_cast<VideoTrack>(track));
}
break;
case TrackAudio:{
metadata = std::make_shared<AudioMeta>(dynamic_pointer_cast<AudioTrack>(track));
}
break;
default:
return;;
}
//添加其metadata
metadata->getMetadata().object_for_each([&](const std::string &key, const AMFValue &value){
_metadata.set(key,value);
});
//设置Track的代理这样输入frame至Track时最终数据将输出到RtmpEncoder中
track->addDelegate(encoder);
//Rtmp编码器共用同一个环形缓存
encoder->setRtmpRing(_rtmpRing);
}
const AMFValue &RtmpMuxer::getMetadata() const {
if(!isAllTrackReady()){
//尚未就绪
static AMFValue s_amf;
return s_amf;
}
return _metadata;
}
RtmpRingInterface::RingType::Ptr RtmpMuxer::getRtmpRing() const {
return _rtmpRing;
}
}/* namespace mediakit */