mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-02 09:31:34 +08:00
150 lines
3.9 KiB
C++
150 lines
3.9 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016 xiongziliang <771730766@qq.com>
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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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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <cctype>
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#include <algorithm>
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#include "RtspDemuxer.h"
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#include "Util/base64.h"
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#include "H264/SPSParser.h"
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#include "Extension/Factory.h"
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using namespace std;
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namespace mediakit {
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RtspDemuxer::RtspDemuxer(const string& sdp) {
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loadSdp(SdpAttr(sdp));
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}
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RtspDemuxer::RtspDemuxer(const SdpAttr &attr) {
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loadSdp(attr);
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}
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void RtspDemuxer::loadSdp(const SdpAttr &attr) {
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auto tracks = attr.getAvailableTrack();
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for (auto &track : tracks){
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switch (track->_type) {
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case TrackVideo: {
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makeVideoTrack(track);
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}
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break;
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case TrackAudio: {
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makeAudioTrack(track);
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}
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break;
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default:
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break;
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}
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}
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auto titleTrack = attr.getTrack(TrackTitle);
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if(titleTrack){
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_fDuration = titleTrack->_duration;
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}
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}
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bool RtspDemuxer::inputRtp(const RtpPacket::Ptr & rtp) {
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switch (rtp->type) {
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case TrackVideo:{
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if(_videoRtpDecoder){
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return _videoRtpDecoder->inputRtp(rtp, true);
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}
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return false;
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}
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case TrackAudio:{
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if(_audioRtpDecoder){
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_audioRtpDecoder->inputRtp(rtp, false);
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return false;
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}
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return false;
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}
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default:
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return false;
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}
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}
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void RtspDemuxer::makeAudioTrack(const SdpTrack::Ptr &audio) {
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//生成Track对象
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_audioTrack = dynamic_pointer_cast<AudioTrack>(Factory::getTrackBySdp(audio));
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if(_audioTrack){
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//生成RtpCodec对象以便解码rtp
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_audioRtpDecoder = Factory::getRtpDecoderById(_audioTrack->getCodecId());
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if(_audioRtpDecoder){
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//设置rtp解码器代理，生成的frame写入该Track
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_audioRtpDecoder->addDelegate(_audioTrack);
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} else{
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//找不到相应的rtp解码器，该track无效
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_audioTrack.reset();
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}
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}
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}
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void RtspDemuxer::makeVideoTrack(const SdpTrack::Ptr &video) {
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//生成Track对象
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_videoTrack = dynamic_pointer_cast<VideoTrack>(Factory::getTrackBySdp(video));
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if(_videoTrack){
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//生成RtpCodec对象以便解码rtp
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_videoRtpDecoder = Factory::getRtpDecoderById(_videoTrack->getCodecId());
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if(_videoRtpDecoder){
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//设置rtp解码器代理，生成的frame写入该Track
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_videoRtpDecoder->addDelegate(_videoTrack);
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}else{
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//找不到相应的rtp解码器，该track无效
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_videoTrack.reset();
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}
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}
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}
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vector<Track::Ptr> RtspDemuxer::getTracks() const {
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vector<Track::Ptr> ret;
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if(_videoTrack){
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ret.emplace_back(_videoTrack);
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}
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if(_audioTrack){
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ret.emplace_back(_audioTrack);
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}
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return ret;
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}
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bool RtspDemuxer::isInited() const {
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bool videoReady = true ,auidoReady = true;
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if(_videoTrack){
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videoReady = _videoTrack->ready();
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}
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if(_audioTrack){
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auidoReady = _audioTrack->ready();
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}
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return videoReady && auidoReady;
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}
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float RtspDemuxer::getDuration() const {
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return _fDuration;
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}
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} /* namespace mediakit */
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