void AVDemuxThread::nextFrame()
{
// clock type will be wrong if no lock because slot frameDeliveredNextFrame() is in video thread
QMutexLocker locker(&next_frame_mutex);
Q_UNUSED(locker);
pause(true); // must pause AVDemuxThread (set user_paused true)
AVThread* av[] = {video_thread, audio_thread};
bool connected = false;
for (size_t i = 0; i < sizeof(av)/sizeof(av[0]); ++i) {
AVThread *t = av[i];
if (!t)
continue;
// set clock first
if (clock_type < 0)
clock_type = (int)t->clock()->isClockAuto() + 2*(int)t->clock()->clockType();
t->clock()->setClockType(AVClock::VideoClock);
t->scheduleFrameDrop(false);
t->pause(false);
t->packetQueue()->blockFull(false);
if (!connected) {
connect(t, SIGNAL(frameDelivered()), this, SLOT(frameDeliveredNextFrame()), Qt::DirectConnection);
connected = true;
}
}
emit requestClockPause(false);
nb_next_frame.ref();
pauseInternal(false);
}
void AVDemuxThread::frameDeliveredNextFrame()
{
AVThread *thread = video_thread ? video_thread : audio_thread;
Q_ASSERT(thread);
if (nb_next_frame.deref()) {
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) || QT_VERSION >= QT_VERSION_CHECK(5, 3, 0)
Q_ASSERT_X((int)nb_next_frame > 0, "frameDeliveredNextFrame", "internal error. frameDeliveredNextFrame must be > 0");
#else
Q_ASSERT_X((int)nb_next_frame.load() > 0, "frameDeliveredNextFrame", "internal error. frameDeliveredNextFrame must be > 0");
#endif
return;
}
QMutexLocker locker(&next_frame_mutex);
Q_UNUSED(locker);
disconnect(thread, SIGNAL(frameDelivered()), this, SLOT(frameDeliveredNextFrame()));
if (user_paused) {
pause(true); // restore pause state
emit requestClockPause(true); // need direct connection
// pause both video and audio thread
if (video_thread)
video_thread->pause(true);
if (audio_thread)
audio_thread->pause(true);
}
if (clock_type >= 0) {
thread->clock()->setClockAuto(clock_type & 1);
thread->clock()->setClockType(AVClock::ClockType(clock_type/2));
clock_type = -1;
}
}
void AVDemuxThread::frameDeliveredNextFrame()
{
AVThread *thread = video_thread ? video_thread : audio_thread;
Q_ASSERT(thread);
QMutexLocker locker(&next_frame_mutex);
Q_UNUSED(locker);
disconnect(thread, SIGNAL(frameDelivered()), this, SLOT(frameDeliveredNextFrame()));
if (user_paused) {
pause(true); // restore pause state
emit requestClockPause(true); // need direct connection
// pause both video and audio thread
if (video_thread)
video_thread->pause(true);
if (audio_thread)
audio_thread->pause(true);
}
if (clock_type >= 0) {
thread->clock()->setClockAuto(clock_type & 1);
thread->clock()->setClockType(AVClock::ClockType(clock_type/2));
clock_type = -1;
}
}
