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Added ability for outputs to elect to only receive completed (i.e.: whole) keyframes, by Oswald de Bruin.

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This commit is contained in:
Thulinma 2015-09-03 20:18:12 +02:00
parent c254085579
commit 17f3a37454
2 changed files with 45 additions and 0 deletions
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43
src/output/output.cpp
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@ -39,10 +39,12 @@ namespace Mist {
sought = false;
isInitialized = false;
isBlocking = false;
completeKeysOnly = false;
lastStats = 0;
maxSkipAhead = 7500;
minSkipAhead = 5000;
realTime = 1000;
completeKeyReadyTimeOut = false;
if (myConn){
setBlocking(true);
}else{
@ -584,6 +586,47 @@ namespace Mist {
Util::sleep(nxt.time - (((Util::getMS() - firstTime)*1000)+minSkipAhead)/realTime);
}
}
//delay the stream until its current keyframe is complete
if (completeKeysOnly){
bool completeKeyReady = false;
int timeoutTries = 40;//attempts to updateMeta before timeOut and moving on; default is approximately 10 seconds
for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin(); it != myMeta.tracks.end(); it++){
if (it->second.keys.size() >1){
int thisTimeoutTries = ((it->second.lastms - it->second.firstms) / (it->second.keys.size()-1)) / 125;
if (thisTimeoutTries > timeoutTries) timeoutTries = thisTimeoutTries;
}
}
while(!completeKeyReady && timeoutTries>0){
completeKeyReady = true;
for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin(); it != myMeta.tracks.end(); it++){
if (!it->second.keys.size() || it->second.keys.rbegin()->getTime() + it->second.keys.rbegin()->getLength() <= nxt.time ){
completeKeyReady = false;
break;
}
}
if (!completeKeyReady){
if (completeKeyReadyTimeOut){
INSANE_MSG("Complete Key not ready and time-out is being skipped");
timeoutTries = 0;
}else{
INSANE_MSG("Timeout: %d",timeoutTries);
timeoutTries--;//we count down
stats();
Util::wait(250);
updateMeta();
}
}
}
if (timeoutTries<=0){
if (!completeKeyReadyTimeOut){
INFO_MSG("Wait for keyframe Timeout triggered! Ended to avoid endless loops");
}
completeKeyReadyTimeOut = true;
}else{
//untimeout handling
completeKeyReadyTimeOut = false;
}
}
if (curPage[nxt.tid]){
if (nxt.offset < curPage[nxt.tid].len){
unsigned long long nextTime = getDTSCTime(curPage[nxt.tid].mapped, nxt.offset);