void DemuxerThr::seek(bool doDemuxerSeek)
{
if (!doDemuxerSeek && skipBufferSeek)
return;
if (playC.seekTo >= 0 || playC.seekTo == SEEK_STREAM_RELOAD)
{
AVThread *aThr = (AVThread *)playC.aThr, *vThr = (AVThread *)playC.vThr;
emit playC.chText(tr("Seeking"));
playC.canUpdatePos = false;
bool seekInBuffer = !skipBufferSeek;
if (playC.seekTo == SEEK_STREAM_RELOAD) //po zmianie strumienia audio, wideo lub napisów lub po ponownym uruchomieniu odtwarzania
{
playC.seekTo = playC.pos;
seekInBuffer = false;
}
const bool backward = playC.seekTo < (int)playC.pos;
bool flush = false, aLocked = false, vLocked = false;
skipBufferSeek = false;
if (seekInBuffer && (!localStream || !backward))
{
playC.vPackets.lock();
playC.aPackets.lock();
playC.sPackets.lock();
if
(
(playC.vPackets.packetsCount() || playC.aPackets.packetsCount()) &&
playC.vPackets.seekTo(playC.seekTo, backward) &&
playC.aPackets.seekTo(playC.seekTo, backward) &&
playC.sPackets.seekTo(playC.seekTo, backward)
)
{
doDemuxerSeek = false;
flush = true;
time = Functions::gettime() - updateBufferedTime; //zapewni, że updateBuffered będzie na "true";
if (aThr)
aLocked = aThr->lock();
if (vThr)
vLocked = vThr->lock();
}
else
{
emit playC.updateBufferedRange(-1, -1);
updateBufferedTime = 0.0;
}
playC.vPackets.unlock();
playC.aPackets.unlock();
playC.sPackets.unlock();
}
if (doDemuxerSeek && demuxer->seek(playC.seekTo, backward))
flush = true;
else if (!doDemuxerSeek && !flush)
{
skipBufferSeek = true;
if (!localStream && !unknownLength)
demuxer->abort(); //Abort only the Demuxer, not IOController
}
if (flush)
{
playC.endOfStream = false;
if (doDemuxerSeek)
clearBuffers();
else
playC.flushAssEvents();
if (!aLocked && aThr)
aLocked = aThr->lock();
if (!vLocked && vThr)
vLocked = vThr->lock();
playC.skipAudioFrame = playC.audio_current_pts = 0.0;
playC.flushVideo = playC.flushAudio = true;
if (playC.pos < 0.0) //skok po rozpoczęciu odtwarzania po uruchomieniu programu
emit playC.updatePos(playC.seekTo); //uaktualnia suwak na pasku do wskazanej pozycji
if (aLocked)
aThr->unlock();
if (vLocked)
vThr->unlock();
}
if (!skipBufferSeek)
{
playC.canUpdatePos = true;
playC.seekTo = SEEK_NOWHERE;
if (!playC.paused)
emit playC.chText(tr("Playback"));
else
playC.paused = false;
}
}
}
