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Working live support once more.

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This commit is contained in:
Thulinma 2013-07-08 16:03:23 +02:00
parent 593805f0ef
commit 68b74997fc
1 changed files with 32 additions and 14 deletions
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44
lib/dtsc.cpp
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@ -176,6 +176,9 @@ void DTSC::Stream::addPacket(JSON::Value & newPack){
livePos newPos;
newPos.trackID = newPack["trackid"].asInt();
newPos.seekTime = newPack["time"].asInt();
while (buffers.count(newPos) > 0){
newPos.seekTime++;
}
buffers[newPos] = newPack;
buffers[newPos].toNetPacked();//make sure package is packed and ready
datapointertype = INVALID;
@ -224,21 +227,18 @@ void DTSC::Stream::addPacket(JSON::Value & newPack){
}
metadata["live"] = 1ll;
}
unsigned int timeBuffered = 0;
if (keySize > 1){
//increase buffer size if no keyframes available or too little time available
timeBuffered = buffers.rbegin()->second["time"].asInt() - buffers.begin()->second["time"].asInt();
}
//increase buffer size if too little time available
unsigned int timeBuffered = buffers.rbegin()->second["time"].asInt() - buffers.begin()->second["time"].asInt();
if (buffercount > 1 && timeBuffered < buffertime){
buffercount++;
buffercount = buffers.size();
if (buffercount < 2){buffercount = 2;}
}
//std::cout << buffers.size() << " - " << buffercount << std::endl;
while (buffers.size() > buffercount){
if (keyframes[buffers.begin()->first.trackID].count(buffers.begin()->first)){
//if there are < 3 keyframes, throwing one away would mean less than 2 left.
if (keyframes[buffers.begin()->first.trackID].size() < 3){
//so, we don't throw it away but instead increase the buffer size
buffercount++;
break;
std::cout << "Warning - track " << buffers.begin()->first.trackID << " doesn't have enough keyframes to be reliably served." << std::endl;
}
std::string track = trackMapping[buffers.begin()->first.trackID];
keyframes[buffers.begin()->first.trackID].erase(buffers.begin()->first);
@ -332,7 +332,14 @@ DTSC::Ring::Ring(livePos v){
/// This Ring will be kept updated so it always points to valid data or has the starved boolean set.
/// Don't forget to call dropRing() for all requested Ring classes that are no longer neccessary!
DTSC::Ring * DTSC::Stream::getRing(){
return new DTSC::Ring(buffers.begin()->first);
livePos tmp = buffers.begin()->first;
std::map<int,std::set<livePos> >::iterator it;
for (it = keyframes.begin(); it != keyframes.end(); it++){
if ((*it->second.begin()).seekTime > tmp.seekTime){
tmp = *it->second.begin();
}
}
return new DTSC::Ring(tmp);
}
/// Deletes a given out Ring class from memory and internal Ring list.
@ -355,13 +362,24 @@ int DTSC::Stream::canSeekms(unsigned int ms){
}
DTSC::livePos DTSC::Stream::msSeek(unsigned int ms, std::set<int> & allowedTracks){
std::set<int> seekTracks = allowedTracks;
livePos result = buffers.begin()->first;
for (std::map<livePos,JSON::Value>::iterator bIt = buffers.begin(); bIt != buffers.end(); bIt++){
if (allowedTracks.find(bIt->first.trackID) != allowedTracks.end()){
if (bIt->first.seekTime > ms){
for (std::set<int>::iterator it = allowedTracks.begin(); it != allowedTracks.end(); it++){
if (getTrackById(*it).isMember("type") && getTrackById(*it)["type"].asString() == "video"){
int trackNo = *it;
seekTracks.clear();
seekTracks.insert(trackNo);
break;
}
}
for (std::map<livePos,JSON::Value>::iterator bIt = buffers.begin(); bIt != buffers.end(); bIt++){
if (seekTracks.find(bIt->first.trackID) != seekTracks.end()){
if (bIt->second.isMember("keyframe")){
result = bIt->first;
if (bIt->first.seekTime >= ms){
return result;
}
}
}
}
return result;