#include "sdp.h"
#include "adts.h"
#include "defines.h"
#include "encode.h"
#include "h264.h"
#include "h265.h"
#include "http_parser.h"
#include "util.h"
namespace SDP{
static State *snglState = 0;
static void snglStateInitCallback(const uint64_t track, const std::string &initData){
snglState->updateInit(track, initData);
}
Track::Track(){
rtcpSent = 0;
channel = -1;
firstTime = 0;
packCount = 0;
fpsTime = 0;
fpsMeta = 0;
fps = 0;
mySSRC = rand();
portA = portB = 0;
cPortA = cPortB = 0;
}
/// Extracts a particular parameter from the fmtp string. fmtp member must be set before calling.
std::string Track::getParamString(const std::string ¶m) const{
if (!fmtp.size()){return "";}
size_t pos = fmtp.find(param);
if (pos == std::string::npos){return "";}
pos += param.size() + 1;
size_t ePos = fmtp.find_first_of(" ;", pos);
return fmtp.substr(pos, ePos - pos);
}
/// Extracts a particular parameter from the fmtp string as an integer. fmtp member must be set
/// before calling.
uint64_t Track::getParamInt(const std::string ¶m) const{
return atoll(getParamString(param).c_str());
}
/// Gets the SDP contents for sending out a particular given DTSC::Track.
std::string mediaDescription(const DTSC::Track &trk){
std::stringstream mediaDesc;
if (trk.codec == "H264"){
MP4::AVCC avccbox;
avccbox.setPayload(trk.init);
mediaDesc << "m=video 0 RTP/AVP 97\r\n"
"a=rtpmap:97 H264/90000\r\n"
"a=cliprect:0,0,"
<< trk.height << "," << trk.width
<< "\r\n"
"a=framesize:97 "
<< trk.width << '-' << trk.height
<< "\r\n"
"a=fmtp:97 packetization-mode=1;profile-level-id="
<< std::hex << std::setw(2) << std::setfill('0') << (int)trk.init.data()[1]
<< std::dec << "E0" << std::hex << std::setw(2) << std::setfill('0')
<< (int)trk.init.data()[3] << std::dec << ";"
<< "sprop-parameter-sets=";
size_t count = avccbox.getSPSCount();
for (size_t i = 0; i < count; ++i){
mediaDesc << (i ? "," : "")
<< Encodings::Base64::encode(
std::string(avccbox.getSPS(i), avccbox.getSPSLen(i)));
}
mediaDesc << ",";
count = avccbox.getPPSCount();
for (size_t i = 0; i < count; ++i){
mediaDesc << (i ? "," : "")
<< Encodings::Base64::encode(
std::string(avccbox.getPPS(i), avccbox.getPPSLen(i)));
}
mediaDesc << "\r\n"
<< "a=framerate:" << ((double)trk.fpks) / 1000.0
<< "\r\n"
"a=control:track"
<< trk.trackID << "\r\n";
}else if (trk.codec == "HEVC"){
h265::initData iData(trk.init);
mediaDesc << "m=video 0 RTP/AVP 104\r\n"
"a=rtpmap:104 H265/90000\r\n"
"a=cliprect:0,0,"
<< trk.height << "," << trk.width
<< "\r\n"
"a=framesize:104 "
<< trk.width << '-' << trk.height << "\r\n"
<< "a=fmtp:104 sprop-vps=";
const std::set<std::string> &vps = iData.getVPS();
if (vps.size()){
for (std::set<std::string>::iterator it = vps.begin(); it != vps.end(); it++){
if (it != vps.begin()){mediaDesc << ",";}
mediaDesc << Encodings::Base64::encode(*it);
}
}
mediaDesc << "; sprop-sps=";
const std::set<std::string> &sps = iData.getSPS();
if (sps.size()){
for (std::set<std::string>::iterator it = sps.begin(); it != sps.end(); it++){
if (it != sps.begin()){mediaDesc << ",";}
mediaDesc << Encodings::Base64::encode(*it);
}
}
mediaDesc << "; sprop-pps=";
const std::set<std::string> &pps = iData.getPPS();
if (pps.size()){
for (std::set<std::string>::iterator it = pps.begin(); it != pps.end(); it++){
if (it != pps.begin()){mediaDesc << ",";}
mediaDesc << Encodings::Base64::encode(*it);
}
}
mediaDesc << "\r\na=framerate:" << ((double)trk.fpks) / 1000.0
<< "\r\n"
"a=control:track"
<< trk.trackID << "\r\n";
}else if (trk.codec == "MPEG2"){
mediaDesc << "m=video 0 RTP/AVP 32\r\n"
"a=cliprect:0,0,"
<< trk.height << "," << trk.width
<< "\r\n"
"a=framesize:32 "
<< trk.width << '-' << trk.height << "\r\n"
<< "a=framerate:" << ((double)trk.fpks) / 1000.0 << "\r\n"
<< "a=control:track" << trk.trackID << "\r\n";
}else if (trk.codec == "AAC"){
mediaDesc << "m=audio 0 RTP/AVP 96"
<< "\r\n"
"a=rtpmap:96 mpeg4-generic/"
<< trk.rate << "/" << trk.channels
<< "\r\n"
"a=fmtp:96 streamtype=5; profile-level-id=15; config=";
for (unsigned int i = 0; i < trk.init.size(); i++){
mediaDesc << std::hex << std::setw(2) << std::setfill('0') << (int)trk.init[i] << std::dec;
}
// these values are described in RFC 3640
mediaDesc << "; mode=AAC-hbr; SizeLength=13; IndexLength=3; IndexDeltaLength=3;\r\n"
"a=control:track"
<< trk.trackID << "\r\n";
}else if (trk.codec == "MP3" || trk.codec == "MP2"){
mediaDesc << "m=" << trk.type << " 0 RTP/AVP 14"
<< "\r\n"
"a=rtpmap:14 MPA/90000/"
<< trk.channels
<< "\r\n"
"a=control:track"
<< trk.trackID << "\r\n";
}else if (trk.codec == "AC3"){
mediaDesc << "m=audio 0 RTP/AVP 100"
<< "\r\n"
"a=rtpmap:100 AC3/"
<< trk.rate << "/" << trk.channels
<< "\r\n"
"a=control:track"
<< trk.trackID << "\r\n";
}else if (trk.codec == "ALAW"){
if (trk.channels == 1 && trk.rate == 8000){
mediaDesc << "m=audio 0 RTP/AVP 8"
<< "\r\n";
}else{
mediaDesc << "m=audio 0 RTP/AVP 101"
<< "\r\n";
mediaDesc << "a=rtpmap:101 PCMA/" << trk.rate << "/" << trk.channels << "\r\n";
}
mediaDesc << "a=control:track" << trk.trackID << "\r\n";
}else if (trk.codec == "ULAW"){
if (trk.channels == 1 && trk.rate == 8000){
mediaDesc << "m=audio 0 RTP/AVP 0"
<< "\r\n";
}else{
mediaDesc << "m=audio 0 RTP/AVP 104"
<< "\r\n";
mediaDesc << "a=rtpmap:104 PCMU/" << trk.rate << "/" << trk.channels << "\r\n";
}
mediaDesc << "a=control:track" << trk.trackID << "\r\n";
}else if (trk.codec == "PCM"){
if (trk.size == 16 && trk.channels == 2 && trk.rate == 44100){
mediaDesc << "m=audio 0 RTP/AVP 10"
<< "\r\n";
}else if (trk.size == 16 && trk.channels == 1 && trk.rate == 44100){
mediaDesc << "m=audio 0 RTP/AVP 11"
<< "\r\n";
}else{
mediaDesc << "m=audio 0 RTP/AVP 103"
<< "\r\n";
mediaDesc << "a=rtpmap:103 L" << trk.size << "/" << trk.rate << "/" << trk.channels
<< "\r\n";
}
mediaDesc << "a=control:track" << trk.trackID << "\r\n";
}else if (trk.codec == "opus"){
mediaDesc << "m=audio 0 RTP/AVP 102"
<< "\r\n"
"a=rtpmap:102 opus/"
<< trk.rate << "/" << trk.channels
<< "\r\n"
"a=control:track"
<< trk.trackID << "\r\n";
}
return mediaDesc.str();
}
/// Generates a transport string suitable for in a SETUP request.
/// By default generates a TCP mode string.
/// Expects parseTransport to be called with the response from the server.
std::string Track::generateTransport(uint32_t trackNo, const std::string &dest, bool TCPmode){
if (TCPmode){
// We simply request interleaved delivery over a trackNo-based identifier.
// No need to set any internal state, parseTransport will handle it all.
std::stringstream tStr;
tStr << "RTP/AVP/TCP;unicast;interleaved=" << ((trackNo - 1) * 2) << "-"
<< ((trackNo - 1) * 2 + 1);
return tStr.str();
}else{
// A little more tricky: we need to find free ports and remember them.
data.SetDestination(dest, 1337);
rtcp.SetDestination(dest, 1337);
portA = portB = 0;
int retries = 0;
while (portB != portA + 1 && retries < 10){
portA = data.bind(0);
portB = rtcp.bind(portA + 1);
}
std::stringstream tStr;
tStr << "RTP/AVP/UDP;unicast;client_port=" << portA << "-" << portB;
return tStr.str();
}
}
/// Sets the TCP/UDP connection details from a given transport string.
/// Sets the transportString member to the current transport string on success.
/// \param host The host connecting to us.
/// \source The source identifier.
/// \return True if successful, false otherwise.
bool Track::parseTransport(const std::string &transport, const std::string &host,
const std::string &source, const DTSC::Track &trk){
if (trk.codec == "H264"){
pack = RTP::Packet(97, 1, 0, mySSRC);
}else if (trk.codec == "HEVC"){
pack = RTP::Packet(104, 1, 0, mySSRC);
}else if (trk.codec == "MPEG2"){
pack = RTP::Packet(32, 1, 0, mySSRC);
}else if (trk.codec == "AAC"){
pack = RTP::Packet(96, 1, 0, mySSRC);
}else if (trk.codec == "AC3"){
pack = RTP::Packet(100, 1, 0, mySSRC);
}else if (trk.codec == "MP3" || trk.codec == "MP2"){
pack = RTP::Packet(14, 1, 0, mySSRC);
}else if (trk.codec == "ALAW"){
if (trk.channels == 1 && trk.rate == 8000){
pack = RTP::Packet(8, 1, 0, mySSRC);
}else{
pack = RTP::Packet(101, 1, 0, mySSRC);
}
}else if (trk.codec == "ULAW"){
if (trk.channels == 1 && trk.rate == 8000){
pack = RTP::Packet(0, 1, 0, mySSRC);
}else{
pack = RTP::Packet(104, 1, 0, mySSRC);
}
}else if (trk.codec == "PCM"){
if (trk.size == 16 && trk.channels == 2 && trk.rate == 44100){
pack = RTP::Packet(10, 1, 0, mySSRC);
}else if (trk.size == 16 && trk.channels == 1 && trk.rate == 44100){
pack = RTP::Packet(11, 1, 0, mySSRC);
}else{
pack = RTP::Packet(103, 1, 0, mySSRC);
}
}else if (trk.codec == "opus"){
pack = RTP::Packet(102, 1, 0, mySSRC);
}else{
ERROR_MSG("Unsupported codec %s for RTSP on track %u", trk.codec.c_str(), trk.trackID);
return false;
}
if (transport.find("TCP") != std::string::npos){
std::string chanE =
transport.substr(transport.find("interleaved=") + 12,
(transport.size() - transport.rfind('-') - 1)); // extract channel ID
channel = atol(chanE.c_str());
rtcpSent = 0;
transportString = transport;
}else{
channel = -1;
uint32_t sPortA = 0, sPortB = 0;
cPortA = cPortB = 0;
size_t sPort_loc = transport.rfind("server_port=") + 12;
if (sPort_loc != std::string::npos){
sPortA =
atol(transport.substr(sPort_loc, transport.find('-', sPort_loc) - sPort_loc).c_str());
sPortB = atol(transport.substr(transport.find('-', sPort_loc) + 1).c_str());
}
size_t port_loc = transport.rfind("client_port=") + 12;
if (port_loc != std::string::npos){
cPortA = atol(transport.substr(port_loc, transport.find('-', port_loc) - port_loc).c_str());
cPortB = atol(transport.substr(transport.find('-', port_loc) + 1).c_str());
}
INFO_MSG("UDP ports: server %d/%d, client %d/%d", sPortA, sPortB, cPortA, cPortB);
int sendbuff = 4 * 1024 * 1024;
if (!sPortA || !sPortB){
// Server mode - find server ports
data.SetDestination(host, cPortA);
setsockopt(data.getSock(), SOL_SOCKET, SO_SNDBUF, &sendbuff, sizeof(sendbuff));
rtcp.SetDestination(host, cPortB);
setsockopt(rtcp.getSock(), SOL_SOCKET, SO_SNDBUF, &sendbuff, sizeof(sendbuff));
portA = data.bind(0);
portB = rtcp.bind(0);
std::stringstream tStr;
tStr << "RTP/AVP/UDP;unicast;client_port=" << cPortA << '-' << cPortB << ";";
if (source.size()){tStr << "source=" << source << ";";}
tStr << "server_port=" << portA << "-" << portB << ";ssrc=" << std::hex << mySSRC
<< std::dec;
transportString = tStr.str();
}else{
// Client mode - check ports and/or obey given ports if possible
data.SetDestination(host, sPortA);
setsockopt(data.getSock(), SOL_SOCKET, SO_SNDBUF, &sendbuff, sizeof(sendbuff));
rtcp.SetDestination(host, sPortB);
setsockopt(rtcp.getSock(), SOL_SOCKET, SO_SNDBUF, &sendbuff, sizeof(sendbuff));
if (portA != cPortA){
portA = data.bind(cPortA);
if (portA != cPortA){
FAIL_MSG("Server requested port %d, which we couldn't bind", cPortA);
return false;
}
}
if (portB != cPortB){
portB = data.bind(cPortB);
if (portB != cPortB){
FAIL_MSG("Server requested port %d, which we couldn't bind", cPortB);
return false;
}
}
transportString = transport;
}
INFO_MSG("Transport string: %s", transportString.c_str());
}
return true;
}
/// Gets the rtpInfo for a given DTSC::Track, source identifier and timestamp (in millis).
std::string Track::rtpInfo(const DTSC::Track &trk, const std::string &source,
uint64_t currentTime){
std::stringstream rInfo;
rInfo << "url=" << source << "/track" << trk.trackID
<< ";"; // get the current url, not localhost
rInfo << "sequence=" << pack.getSequence() << ";rtptime=" << currentTime * getMultiplier(trk);
return rInfo.str();
}
State::State(){
incomingPacketCallback = 0;
myMeta = 0;
snglState = this;
}
void State::parseSDP(const std::string &sdp){
DONTEVEN_MSG("Parsing %llu-byte SDP", sdp.size());
std::stringstream ss(sdp);
std::string to;
uint64_t trackNo = 0;
bool nope = true; // true if we have no valid track to fill
DTSC::Track *thisTrack = 0;
while (std::getline(ss, to, '\n')){
if (!to.empty() && *to.rbegin() == '\r'){to.erase(to.size() - 1, 1);}
if (to.empty()){continue;}
DONTEVEN_MSG("Parsing SDP line: %s", to.c_str());
// All tracks start with a media line
if (to.substr(0, 2) == "m="){
nope = true;
++trackNo;
thisTrack = &(myMeta->tracks[trackNo]);
std::stringstream words(to.substr(2));
std::string item;
if (getline(words, item, ' ') && (item == "audio" || item == "video")){
thisTrack->type = item;
thisTrack->trackID = trackNo;
}else{
WARN_MSG("Media type not supported: %s", item.c_str());
myMeta->tracks.erase(trackNo);
tracks.erase(trackNo);
continue;
}
getline(words, item, ' ');
if (!getline(words, item, ' ') || item.substr(0, 7) != "RTP/AVP"){
WARN_MSG("Media transport not supported: %s", item.c_str());
myMeta->tracks.erase(trackNo);
tracks.erase(trackNo);
continue;
}
if (getline(words, item, ' ')){
uint64_t avp_type = JSON::Value(item).asInt();
switch (avp_type){
case 0: // PCM Mu-law
INFO_MSG("PCM Mu-law payload type");
nope = false;
thisTrack->codec = "ULAW";
thisTrack->rate = 8000;
thisTrack->channels = 1;
break;
case 8: // PCM A-law
INFO_MSG("PCM A-law payload type");
nope = false;
thisTrack->codec = "ALAW";
thisTrack->rate = 8000;
thisTrack->channels = 1;
break;
case 10: // PCM Stereo, 44.1kHz
INFO_MSG("Linear PCM stereo 44.1kHz payload type");
nope = false;
thisTrack->codec = "PCM";
thisTrack->size = 16;
thisTrack->rate = 44100;
thisTrack->channels = 2;
break;
case 11: // PCM Mono, 44.1kHz
INFO_MSG("Linear PCM mono 44.1kHz payload type");
nope = false;
thisTrack->codec = "PCM";
thisTrack->rate = 44100;
thisTrack->size = 16;
thisTrack->channels = 1;
break;
case 14: // MPA
INFO_MSG("MPA payload type");
nope = false;
thisTrack->codec = "MP3";
thisTrack->rate = 0;
thisTrack->size = 0;
thisTrack->channels = 0;
break;
case 32: // MPV
INFO_MSG("MPV payload type");
nope = false;
thisTrack->codec = "MPEG2";
break;
default:
// dynamic type
if (avp_type >= 96 && avp_type <= 127){
HIGH_MSG("Dynamic payload type (%llu) detected", avp_type);
nope = false;
continue;
}else{
FAIL_MSG("Payload type %llu not supported!", avp_type);
myMeta->tracks.erase(trackNo);
tracks.erase(trackNo);
continue;
}
}
}
tConv[trackNo].setProperties(*thisTrack);
HIGH_MSG("Incoming track %s", thisTrack->getIdentifier().c_str());
continue;
}
if (nope){continue;}// ignore lines if we have no valid track
// RTP mapping
if (to.substr(0, 8) == "a=rtpmap"){
std::string mediaType = to.substr(to.find(' ', 8) + 1);
std::string trCodec = mediaType.substr(0, mediaType.find('/'));
// convert to fullcaps
for (unsigned int i = 0; i < trCodec.size(); ++i){
if (trCodec[i] <= 122 && trCodec[i] >= 97){trCodec[i] -= 32;}
}
if (thisTrack->type == "audio"){
std::string extraInfo = mediaType.substr(mediaType.find('/') + 1);
if (extraInfo.find('/') != std::string::npos){
size_t lastSlash = extraInfo.find('/');
thisTrack->rate = atoll(extraInfo.substr(0, lastSlash).c_str());
thisTrack->channels = atoll(extraInfo.substr(lastSlash + 1).c_str());
}else{
thisTrack->rate = atoll(extraInfo.c_str());
thisTrack->channels = 1;
}
}
if (trCodec == "H264"){
thisTrack->codec = "H264";
thisTrack->rate = 90000;
}
if (trCodec == "H265"){
thisTrack->codec = "HEVC";
thisTrack->rate = 90000;
}
if (trCodec == "OPUS"){
thisTrack->codec = "opus";
thisTrack->init = std::string("OpusHead\001\002\170\000\200\273\000\000\000\000\000", 19);
}
if (trCodec == "PCMA"){thisTrack->codec = "ALAW";}
if (trCodec == "PCMU"){thisTrack->codec = "ULAW";}
if (trCodec == "L8"){
thisTrack->codec = "PCM";
thisTrack->size = 8;
}
if (trCodec == "L16"){
thisTrack->codec = "PCM";
thisTrack->size = 16;
}
if (trCodec == "L20"){
thisTrack->codec = "PCM";
thisTrack->size = 20;
}
if (trCodec == "L24"|| trCodec == "PCM"){
thisTrack->codec = "PCM";
thisTrack->size = 24;
}
if (trCodec == "MPEG4-GENERIC"){thisTrack->codec = "AAC";}
if (!thisTrack->codec.size()){
ERROR_MSG("Unsupported RTP mapping: %s", mediaType.c_str());
}else{
tConv[trackNo].setProperties(*thisTrack);
HIGH_MSG("Incoming track %s", thisTrack->getIdentifier().c_str());
}
continue;
}
if (to.substr(0, 10) == "a=control:"){
tracks[trackNo].control = to.substr(10);
continue;
}
if (to.substr(0, 12) == "a=framerate:"){
if (!thisTrack->rate){thisTrack->rate = atof(to.c_str() + 12) * 1000;}
continue;
}
if (to.substr(0, 12) == "a=framesize:"){
// Ignored for now.
/// \TODO Maybe implement?
continue;
}
if (to.substr(0, 11) == "a=cliprect:"){
// Ignored for now.
/// \TODO Maybe implement?
continue;
}
if (to.substr(0, 7) == "a=fmtp:"){
tracks[trackNo].fmtp = to.substr(7);
if (thisTrack->codec == "AAC"){
if (tracks[trackNo].getParamString("mode") != "AAC-hbr"){
// a=fmtp:97
// profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;
// config=120856E500
FAIL_MSG("AAC transport mode not supported: %s",
tracks[trackNo].getParamString("mode").c_str());
nope = true;
myMeta->tracks.erase(trackNo);
tracks.erase(trackNo);
continue;
}
thisTrack->init = Encodings::Hex::decode(tracks[trackNo].getParamString("config"));
// myMeta.tracks[trackNo].rate = aac::AudSpecConf::rate(myMeta.tracks[trackNo].init);
}
if (thisTrack->codec == "H264"){
// a=fmtp:96 packetization-mode=1;
// sprop-parameter-sets=Z0LAHtkA2D3m//AUABqxAAADAAEAAAMAMg8WLkg=,aMuDyyA=;
// profile-level-id=42C01E
std::string sprop = tracks[trackNo].getParamString("sprop-parameter-sets");
size_t comma = sprop.find(',');
tracks[trackNo].spsData = Encodings::Base64::decode(sprop.substr(0, comma));
tracks[trackNo].ppsData = Encodings::Base64::decode(sprop.substr(comma + 1));
updateH264Init(trackNo);
}
if (thisTrack->codec == "HEVC"){
tracks[trackNo].hevcInfo.addUnit(
Encodings::Base64::decode(tracks[trackNo].getParamString("sprop-vps")));
tracks[trackNo].hevcInfo.addUnit(
Encodings::Base64::decode(tracks[trackNo].getParamString("sprop-sps")));
tracks[trackNo].hevcInfo.addUnit(
Encodings::Base64::decode(tracks[trackNo].getParamString("sprop-pps")));
updateH265Init(trackNo);
}
continue;
}
// We ignore bandwidth lines
if (to.substr(0, 2) == "b="){continue;}
// we ignore everything before the first media line.
if (!trackNo){continue;}
// at this point, the data is definitely for a track
INFO_MSG("Unhandled SDP line for track %llu: %s", trackNo, to.c_str());
}
for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta->tracks.begin();
it != myMeta->tracks.end(); ++it){
INFO_MSG("Detected track %s", it->second.getIdentifier().c_str());
}
}
/// Calculates H265 track metadata from sps and pps data stored in tracks[trackNo]
void State::updateH265Init(uint64_t trackNo){
DTSC::Track &Trk = myMeta->tracks[trackNo];
SDP::Track &RTrk = tracks[trackNo];
if (!RTrk.hevcInfo.haveRequired()){
MEDIUM_MSG("Aborted meta fill for hevc track %lu: no info nal unit", trackNo);
return;
}
Trk.init = RTrk.hevcInfo.generateHVCC();
h265::metaInfo MI = tracks[trackNo].hevcInfo.getMeta();
RTrk.fpsMeta = MI.fps;
Trk.width = MI.width;
Trk.height = MI.height;
Trk.fpks = RTrk.fpsMeta * 1000;
tConv[trackNo].setProperties(Trk);
}
/// Calculates H264 track metadata from vps, sps and pps data stored in tracks[trackNo]
void State::updateH264Init(uint64_t trackNo){
DTSC::Track &Trk = myMeta->tracks[trackNo];
SDP::Track &RTrk = tracks[trackNo];
h264::sequenceParameterSet sps(RTrk.spsData.data(), RTrk.spsData.size());
h264::SPSMeta hMeta = sps.getCharacteristics();
MP4::AVCC avccBox;
avccBox.setVersion(1);
avccBox.setProfile(RTrk.spsData[1]);
avccBox.setCompatibleProfiles(RTrk.spsData[2]);
avccBox.setLevel(RTrk.spsData[3]);
avccBox.setSPSCount(1);
avccBox.setSPS(RTrk.spsData);
avccBox.setPPSCount(1);
avccBox.setPPS(RTrk.ppsData);
RTrk.fpsMeta = hMeta.fps;
Trk.width = hMeta.width;
Trk.height = hMeta.height;
Trk.fpks = hMeta.fps * 1000;
Trk.init = std::string(avccBox.payload(), avccBox.payloadSize());
tConv[trackNo].setProperties(Trk);
}
uint32_t State::getTrackNoForChannel(uint8_t chan){
for (std::map<uint32_t, Track>::iterator it = tracks.begin(); it != tracks.end(); ++it){
if (chan == it->second.channel){return it->first;}
}
return 0;
}
uint32_t State::parseSetup(HTTP::Parser &H, const std::string &cH, const std::string &src){
static uint32_t trackCounter = 0;
if (H.url == "200"){
++trackCounter;
if (!tracks.count(trackCounter)){return 0;}
if (!tracks[trackCounter].parseTransport(H.GetHeader("Transport"), cH, src,
myMeta->tracks[trackCounter])){
return 0;
}
return trackCounter;
}
HTTP::URL url(H.url);
std::string urlString = url.getBareUrl();
std::string pw = H.GetVar("pass");
bool loop = true;
while (loop){
if (tracks.size()){
for (std::map<uint32_t, Track>::iterator it = tracks.begin(); it != tracks.end(); ++it){
if (!it->second.control.size()){
it->second.control = "/track" + JSON::Value((long long)it->first).asString();
INFO_MSG("Control track: %s", it->second.control.c_str());
}
if ((urlString.size() >= it->second.control.size() &&
urlString.substr(urlString.size() - it->second.control.size()) ==
it->second.control) ||
(pw.size() >= it->second.control.size() &&
pw.substr(pw.size() - it->second.control.size()) == it->second.control)){
INFO_MSG("Parsing SETUP against track %lu", it->first);
if (!it->second.parseTransport(H.GetHeader("Transport"), cH, src,
myMeta->tracks[it->first])){
return 0;
}
return it->first;
}
}
}
if (H.url.find("/track") != std::string::npos){
uint32_t trackNo = atoi(H.url.c_str() + H.url.find("/track") + 6);
if (trackNo){
INFO_MSG("Parsing SETUP against track %lu", trackNo);
if (!tracks[trackNo].parseTransport(H.GetHeader("Transport"), cH, src,
myMeta->tracks[trackNo])){
return 0;
}
return trackNo;
}
}
if (urlString != url.path){
urlString = url.path;
}else{
loop = false;
}
}
return 0;
}
/// Returns the multiplier to use to get milliseconds from the RTP payload type for the given
/// track
double getMultiplier(const DTSC::Track &Trk){
if (Trk.type == "video" || Trk.codec == "MP2" || Trk.codec == "MP3"){return 90.0;}
return ((double)Trk.rate / 1000.0);
}
void State::updateInit(const uint64_t trackNo, const std::string &initData){
if (myMeta->tracks.count(trackNo)){
myMeta->tracks[trackNo].init = initData;
}
}
/// Handles RTP packets generically, for both TCP and UDP-based connections.
/// In case of UDP, expects packets to be pre-sorted.
void State::handleIncomingRTP(const uint64_t track, const RTP::Packet &pkt){
tConv[track].setCallbacks(incomingPacketCallback, snglStateInitCallback);
tConv[track].addRTP(pkt);
}
}// namespace SDP