mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 19:20:53 +08:00
232 lines
7.8 KiB
C++
232 lines
7.8 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016-2019 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 "Factory.h"
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#include "H264Rtmp.h"
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#include "AACRtmp.h"
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#include "H264Rtp.h"
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#include "AACRtp.h"
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#include "H265Rtp.h"
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#include "Common/Parser.h"
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namespace mediakit{
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Track::Ptr Factory::getTrackBySdp(const SdpTrack::Ptr &track) {
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if (strcasecmp(track->_codec.data(), "mpeg4-generic") == 0) {
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string aac_cfg_str = FindField(track->_fmtp.data(), "config=", nullptr);
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if (aac_cfg_str.empty()) {
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aac_cfg_str = FindField(track->_fmtp.data(), "config=", ";");
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}
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if (aac_cfg_str.empty()) {
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//如果sdp中获取不到aac config信息，那么在rtp也无法获取，那么忽略该Track
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return nullptr;
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}
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string aac_cfg;
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unsigned int cfg1;
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sscanf(aac_cfg_str.substr(0, 2).data(), "%02X", &cfg1);
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cfg1 &= 0x00FF;
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aac_cfg.push_back(cfg1);
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unsigned int cfg2;
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sscanf(aac_cfg_str.substr(2, 2).data(), "%02X", &cfg2);
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cfg2 &= 0x00FF;
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aac_cfg.push_back(cfg2);
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return std::make_shared<AACTrack>(aac_cfg);
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}
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if (strcasecmp(track->_codec.data(), "h264") == 0) {
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//a=fmtp:96 packetization-mode=1;profile-level-id=42C01F;sprop-parameter-sets=Z0LAH9oBQBboQAAAAwBAAAAPI8YMqA==,aM48gA==
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auto map = Parser::parseArgs(FindField(track->_fmtp.data()," ", nullptr),";","=");
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auto sps_pps = map["sprop-parameter-sets"];
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string base64_SPS = FindField(sps_pps.data(), NULL, ",");
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string base64_PPS = FindField(sps_pps.data(), ",", NULL);
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auto sps = decodeBase64(base64_SPS);
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auto pps = decodeBase64(base64_PPS);
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if(sps.empty() || pps.empty()){
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//如果sdp里面没有sps/pps,那么可能在后续的rtp里面恢复出sps/pps
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return std::make_shared<H264Track>();
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}
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return std::make_shared<H264Track>(sps,pps,0,0);
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}
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if (strcasecmp(track->_codec.data(), "h265") == 0) {
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//a=fmtp:96 sprop-sps=QgEBAWAAAAMAsAAAAwAAAwBdoAKAgC0WNrkky/AIAAADAAgAAAMBlQg=; sprop-pps=RAHA8vA8kAA=
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auto map = Parser::parseArgs(FindField(track->_fmtp.data()," ", nullptr),";","=");
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auto vps = decodeBase64(map["sprop-vps"]);
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auto sps = decodeBase64(map["sprop-sps"]);
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auto pps = decodeBase64(map["sprop-pps"]);
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if(sps.empty() || pps.empty()){
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//如果sdp里面没有sps/pps,那么可能在后续的rtp里面恢复出sps/pps
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return std::make_shared<H265Track>();
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}
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return std::make_shared<H265Track>(vps,sps,pps,0,0,0);
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}
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WarnL << "暂不支持该sdp:" << track->_codec << " " << track->_fmtp;
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return nullptr;
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}
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Track::Ptr Factory::getTrackByCodecId(CodecId codecId) {
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switch (codecId){
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case CodecH264:{
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return std::make_shared<H264Track>();
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}
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case CodecH265:{
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return std::make_shared<H265Track>();
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}
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case CodecAAC:{
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return std::make_shared<AACTrack>();
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}
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default:
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WarnL << "暂不支持该CodecId:" << codecId;
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return nullptr;
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}
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}
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RtpCodec::Ptr Factory::getRtpEncoderBySdp(const Sdp::Ptr &sdp) {
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GET_CONFIG(uint32_t,audio_mtu,Rtp::kAudioMtuSize);
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GET_CONFIG(uint32_t,video_mtu,Rtp::kVideoMtuSize);
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// ssrc不冲突即可,可以为任意的32位整形
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static atomic<uint32_t> s_ssrc(0);
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uint32_t ssrc = s_ssrc++;
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if(!ssrc){
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//ssrc不能为0
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ssrc = 1;
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}
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if(sdp->getTrackType() == TrackVideo){
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//视频的ssrc是偶数，方便调试
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ssrc = 2 * ssrc;
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}else{
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//音频ssrc是奇数
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ssrc = 2 * ssrc + 1;
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}
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auto mtu = (sdp->getTrackType() == TrackVideo ? video_mtu : audio_mtu);
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auto sample_rate = sdp->getSampleRate();
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auto pt = sdp->getPlayloadType();
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auto interleaved = sdp->getTrackType() * 2;
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auto codec_id = sdp->getCodecId();
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switch (codec_id){
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case CodecH264:
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return std::make_shared<H264RtpEncoder>(ssrc,mtu,sample_rate,pt,interleaved);
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case CodecH265:
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return std::make_shared<H265RtpEncoder>(ssrc,mtu,sample_rate,pt,interleaved);
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case CodecAAC:
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return std::make_shared<AACRtpEncoder>(ssrc,mtu,sample_rate,pt,interleaved);
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default:
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WarnL << "暂不支持该CodecId:" << codec_id;
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return nullptr;
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}
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}
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RtpCodec::Ptr Factory::getRtpDecoderByTrack(const Track::Ptr &track) {
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switch (track->getCodecId()){
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case CodecH264:
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return std::make_shared<H264RtpDecoder>();
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case CodecH265:
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return std::make_shared<H265RtpDecoder>();
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case CodecAAC:
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return std::make_shared<AACRtpDecoder>(track->clone());
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default:
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WarnL << "暂不支持该CodecId:" << track->getCodecName();
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return nullptr;
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}
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}
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/////////////////////////////rtmp相关///////////////////////////////////////////
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Track::Ptr Factory::getTrackByAmf(const AMFValue &amf) {
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CodecId codecId = getCodecIdByAmf(amf);
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if(codecId == CodecInvalid){
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return nullptr;
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}
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return getTrackByCodecId(codecId);
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}
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CodecId Factory::getCodecIdByAmf(const AMFValue &val){
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if (val.type() == AMF_STRING){
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auto str = val.as_string();
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if(str == "avc1"){
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return CodecH264;
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}
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if(str == "mp4a"){
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return CodecAAC;
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}
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if(str == "hev1" || str == "hvc1"){
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return CodecH265;
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}
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WarnL << "暂不支持该Amf:" << str;
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return CodecInvalid;
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}
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if (val.type() != AMF_NULL){
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auto type_id = val.as_integer();
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switch (type_id){
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case 7: return CodecH264;
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case 10: return CodecAAC;
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case 12: return CodecH265;
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default:
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WarnL << "暂不支持该Amf:" << type_id;
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return CodecInvalid;
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}
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}else{
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WarnL << "Metadata不存在相应的Track";
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}
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return CodecInvalid;
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}
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RtmpCodec::Ptr Factory::getRtmpCodecByTrack(const Track::Ptr &track) {
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switch (track->getCodecId()){
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case CodecH264:
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return std::make_shared<H264RtmpEncoder>(track);
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case CodecAAC:
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return std::make_shared<AACRtmpEncoder>(track);
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default:
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WarnL << "暂不支持该CodecId:" << track->getCodecName();
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return nullptr;
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}
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}
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AMFValue Factory::getAmfByCodecId(CodecId codecId) {
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switch (codecId){
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case CodecAAC: return AMFValue("mp4a");
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case CodecH264: return AMFValue("avc1");
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case CodecH265: return AMFValue(12);
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default: return AMFValue(AMF_NULL);
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}
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}
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}//namespace mediakit
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