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替换sdp解析逻辑

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This commit is contained in:
xiongziliang
2018-10-26 09:56:29 +08:00
parent a69d7d0f71
commit 6fe90fe4ba
12 changed files with 147 additions and 179 deletions
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73
src/Rtsp/Rtsp.cpp
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@@ -110,13 +110,13 @@ void SdpAttr::load(const string &sdp) {
for (auto &pr : _track_map) {
auto &track = *pr.second;
if (pr.first == "") {
track._type = TrackTitle;
track.type = TrackTitle;
} else if (pr.first == "video") {
track._type = TrackVideo;
track.type = TrackVideo;
} else if (pr.first == "audio") {
track._type = TrackAudio;
track.type = TrackAudio;
} else {
track._type = TrackInvalid;
track.type = TrackInvalid;
}
auto it = track._attr.find("range");
@@ -153,6 +153,8 @@ void SdpAttr::load(const string &sdp) {
it = track._attr.find("control");
if(it != track._attr.end()) {
track._control = it->second;
auto surffix = string("/") + track._control;
track._control_surffix = surffix.substr(1 + surffix.rfind('/'));
}
}
}
@@ -163,64 +165,25 @@ bool SdpAttr::available() const {
SdpTrack::Ptr SdpAttr::getTrack(TrackType type) const {
for (auto &pr : _track_map){
if(pr.second->_type == type){
if(pr.second->type == type){
return pr.second;
}
}
return nullptr;
}
int parserSDP(const string& sdp, RtspTrack Track[2]) {
int track_cnt = 0;
string::size_type pos_head = 0;
while ((pos_head = sdp.find("m=",pos_head)) != string::npos ) {
auto pos_end = sdp.find("m=", pos_head + 2);
if (pos_end == string::npos) {
pos_end = sdp.size();
}
auto sdp_mid = sdp.substr(pos_head, pos_end - pos_head);
pos_head = pos_end;
Track[track_cnt].trackSdp = sdp_mid;
Track[track_cnt].inited = false;
Track[track_cnt].PT = atoi(FindField(sdp_mid.c_str(), "a=rtpmap:", " ").c_str());
auto control = string("/") + trim(FindField(sdp_mid.c_str(), "a=control:", "\n"));
Track[track_cnt].controlSuffix = control.substr(1 + control.rfind('/'));
if (sdp_mid.find("m=video") != string::npos) {
//视频通道
Track[track_cnt].type = TrackVideo;
} else if (sdp_mid.find("m=audio") != string::npos) {
//音频通道
Track[track_cnt].type = TrackAudio;
} else {
//不识别的track
continue;
}
track_cnt++;
vector<SdpTrack::Ptr> SdpAttr::getAvailableTrack() const {
vector<SdpTrack::Ptr> ret;
auto video = getTrack(TrackVideo);
if(video){
ret.emplace_back(video);
}
return track_cnt;
auto audio = getTrack(TrackAudio);
if(audio){
ret.emplace_back(audio);
}
return ret;
}
static onceToken s_token([](){
string str = "v=0\n"
"o=- 1001 1 IN IP4 192.168.0.22\n"
"s=VCP IPC Realtime stream\n"
"a=range:npt=0-\n"
"m=video 0 RTP/AVP 105\n"
"c=IN IP4 192.168.0.22\n"
"a=control:rtsp://192.168.0.22/media/video1/video\n"
"a=rtpmap:105 H264/90000\n"
"a=fmtp:105 profile-level-id=64001f; packetization-mode=1; sprop-parameter-sets=Z2QAH6wrUCgC3QgAAB9AAAYahCAA,aO4xsg==\n"
"a=recvonly\n"
"m=application 0 RTP/AVP 107\n"
"c=IN IP4 192.168.0.22\n"
"a=control:rtsp://192.168.0.22/media/video1/metadata\n"
"a=rtpmap:107 vnd.onvif.metadata/90000\n"
"a=fmtp:107 DecoderTag=h3c-v3 RTCP=0\n"
"a=recvonly";
RtspTrack track[2];
parserSDP(str,track);
SdpAttr attr(str);
track[0].inited=true;
});