void OBS::EncodeLoop()
{
QWORD streamTimeStart = GetQPCTimeNS();
QWORD frameTimeNS = 1000000000/fps;
bool bufferedFrames = true; //to avoid constantly polling number of frames
int numTotalDuplicatedFrames = 0, numTotalFrames = 0, numFramesSkipped = 0;
bufferedTimes.Clear();
bool bUsingQSV = videoEncoder->isQSV();//GlobalConfig->GetInt(TEXT("Video Encoding"), TEXT("UseQSV")) != 0;
QWORD sleepTargetTime = streamTimeStart+frameTimeNS;
latestVideoTime = firstSceneTimestamp = streamTimeStart/1000000;
latestVideoTimeNS = streamTimeStart;
firstFrameTimestamp = 0;
UINT encoderInfo = 0;
QWORD messageTime = 0;
EncoderPicture *lastPic = NULL;
UINT skipThreshold = encoderSkipThreshold*2;
UINT no_sleep_counter = 0;
CircularList<QWORD> bufferedTimes;
while(!bShutdownEncodeThread || (bufferedFrames && !bTestStream)) {
if (!SleepToNS(sleepTargetTime += (frameTimeNS/2)))
no_sleep_counter++;
else
no_sleep_counter = 0;
latestVideoTime = sleepTargetTime/1000000;
latestVideoTimeNS = sleepTargetTime;
if (no_sleep_counter < skipThreshold) {
SetEvent(hVideoEvent);
if (encoderInfo) {
if (messageTime == 0) {
messageTime = latestVideoTime+3000;
} else if (latestVideoTime >= messageTime) {
RemoveStreamInfo(encoderInfo);
encoderInfo = 0;
messageTime = 0;
}
}
} else {
numFramesSkipped++;
if (!encoderInfo)
encoderInfo = AddStreamInfo(Str("EncoderLag"), StreamInfoPriority_Critical);
messageTime = 0;
}
if (!SleepToNS(sleepTargetTime += (frameTimeNS/2)))
no_sleep_counter++;
else
no_sleep_counter = 0;
bufferedTimes << latestVideoTime;
if (curFramePic && firstFrameTimestamp) {
while (bufferedTimes[0] < firstFrameTimestamp)
bufferedTimes.Remove(0);
DWORD curFrameTimestamp = DWORD(bufferedTimes[0] - firstFrameTimestamp);
bufferedTimes.Remove(0);
profileIn("encoder thread frame");
FrameProcessInfo frameInfo;
frameInfo.firstFrameTime = firstFrameTimestamp;
frameInfo.frameTimestamp = curFrameTimestamp;
frameInfo.pic = curFramePic;
if (lastPic == frameInfo.pic)
numTotalDuplicatedFrames++;
if(bUsingQSV)
curFramePic->mfxOut->Data.TimeStamp = curFrameTimestamp;
else
curFramePic->picOut->i_pts = curFrameTimestamp;
ProcessFrame(frameInfo);
if (bShutdownEncodeThread)
bufferedFrames = videoEncoder->HasBufferedFrames();
lastPic = frameInfo.pic;
profileOut;
numTotalFrames++;
}
}
//flush all video frames in the "scene buffering time" buffer
if (firstFrameTimestamp && bufferedVideo.Num())
{
QWORD startTime = GetQPCTimeMS();
DWORD baseTimestamp = bufferedVideo[0].timestamp;
for(UINT i=0; i<bufferedVideo.Num(); i++)
{
//we measure our own time rather than sleep between frames due to potential sleep drift
QWORD curTime;
do
{
curTime = GetQPCTimeMS();
OSSleep (1);
} while (curTime - startTime < bufferedVideo[i].timestamp - baseTimestamp);
SendFrame(bufferedVideo[i], firstFrameTimestamp);
bufferedVideo[i].Clear();
numTotalFrames++;
}
bufferedVideo.Clear();
}
Log(TEXT("Total frames encoded: %d, total frames duplicated: %d (%0.2f%%)"), numTotalFrames, numTotalDuplicatedFrames, (numTotalFrames > 0) ? (double(numTotalDuplicatedFrames)/double(numTotalFrames))*100.0 : 0.0f);
if (numFramesSkipped)
Log(TEXT("Number of frames skipped due to encoder lag: %d (%0.2f%%)"), numFramesSkipped, (numTotalFrames > 0) ? (double(numFramesSkipped)/double(numTotalFrames))*100.0 : 0.0f);
SetEvent(hVideoEvent);
bShutdownVideoThread = true;
}
void OBS::EncodeLoop()
{
QWORD streamTimeStart = GetQPCTimeNS();
QWORD frameTimeNS = 1000000000/fps;
bool bufferedFrames = true; //to avoid constantly polling number of frames
int numTotalDuplicatedFrames = 0, numTotalFrames = 0;
bufferedTimes.Clear();
bool bUsingQSV = videoEncoder->isQSV();//GlobalConfig->GetInt(TEXT("Video Encoding"), TEXT("UseQSV")) != 0;
QWORD sleepTargetTime = streamTimeStart+frameTimeNS;
latestVideoTime = firstSceneTimestamp = streamTimeStart/1000000;
latestVideoTimeNS = streamTimeStart;
firstFrameTimestamp = 0;
EncoderPicture *lastPic = NULL;
CircularList<QWORD> bufferedTimes;
while(!bShutdownEncodeThread || (bufferedFrames && !bTestStream)) {
SetEvent(hVideoEvent);
SleepToNS(sleepTargetTime);
latestVideoTime = sleepTargetTime/1000000;
latestVideoTimeNS = sleepTargetTime;
bufferedTimes << latestVideoTime;
if (curFramePic && firstFrameTimestamp) {
while (bufferedTimes[0] < firstFrameTimestamp)
bufferedTimes.Remove(0);
DWORD curFrameTimestamp = DWORD(bufferedTimes[0] - firstFrameTimestamp);
bufferedTimes.Remove(0);
profileIn("encoder thread frame");
FrameProcessInfo frameInfo;
frameInfo.firstFrameTime = firstFrameTimestamp;
frameInfo.frameTimestamp = curFrameTimestamp;
frameInfo.pic = curFramePic;
if (lastPic == frameInfo.pic)
numTotalDuplicatedFrames++;
if(bUsingQSV)
curFramePic->mfxOut->Data.TimeStamp = curFrameTimestamp;
else
curFramePic->picOut->i_pts = curFrameTimestamp;
ProcessFrame(frameInfo);
if (bShutdownEncodeThread)
bufferedFrames = videoEncoder->HasBufferedFrames();
lastPic = frameInfo.pic;
profileOut;
numTotalFrames++;
}
sleepTargetTime += frameTimeNS;
}
//flush all video frames in the "scene buffering time" buffer
if (firstFrameTimestamp && bufferedVideo.Num())
{
QWORD startTime = GetQPCTimeMS();
DWORD baseTimestamp = bufferedVideo[0].timestamp;
for(UINT i=0; i<bufferedVideo.Num(); i++)
{
//we measure our own time rather than sleep between frames due to potential sleep drift
QWORD curTime;
do
{
curTime = GetQPCTimeMS();
OSSleep (1);
} while (curTime - startTime < bufferedVideo[i].timestamp - baseTimestamp);
SendFrame(bufferedVideo[i], firstFrameTimestamp);
bufferedVideo[i].Clear();
numTotalFrames++;
}
bufferedVideo.Clear();
}
Log(TEXT("Total frames encoded: %d, total frames duplicated %d (%0.2f%%)"), numTotalFrames, numTotalDuplicatedFrames, (double(numTotalDuplicatedFrames)/double(numTotalFrames))*100.0);
SetEvent(hVideoEvent);
bShutdownVideoThread = true;
}
