本文整理汇总了C++中PacketQueue::setBlocking方法的典型用法代码示例。如果您正苦于以下问题：C++ PacketQueue::setBlocking方法的具体用法？C++ PacketQueue::setBlocking怎么用？C++ PacketQueue::setBlocking使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PacketQueue的用法示例。
在下文中一共展示了PacketQueue::setBlocking方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: run
void AVDemuxThread::run()
{
end = false;
if (audio_thread && !audio_thread->isRunning())
audio_thread->start(QThread::HighPriority);
if (video_thread && !video_thread->isRunning())
video_thread->start();
int running_threads = 0;
if (audio_thread)
++running_threads;
if (video_thread)
++running_threads;
qDebug("demux thread start running...%d avthreads", running_threads);
audio_stream = demuxer->audioStream();
video_stream = demuxer->videoStream();
int index = 0;
Packet pkt;
pause(false);
qDebug("get av queue a/v thread = %p %p", audio_thread, video_thread);
PacketQueue *aqueue = audio_thread ? audio_thread->packetQueue() : 0;
PacketQueue *vqueue = video_thread ? video_thread->packetQueue() : 0;
if (aqueue) {
aqueue->clear();
aqueue->setBlocking(true);
}
if (vqueue) {
vqueue->clear();
vqueue->setBlocking(true);
}
while (!end) {
processNextSeekTask();
#if RESUME_ONCE_ON_SEEK
// resume once is not enough. readFrame() failed after seek (why?) and we need video packet
processNextPauseTask();
if (tryPause()) {
#else
if (tryPause(ULONG_MAX)) {
#endif
continue; //the queue is empty and will block
}
running_threads = (audio_thread && audio_thread->isRunning()) + (video_thread && video_thread->isRunning());
if (!running_threads) {
qDebug("no running avthreads. exit demuxer thread");
break;
}
QMutexLocker locker(&buffer_mutex);
Q_UNUSED(locker);
if (end) {
break;
}
if (!demuxer->readFrame()) {
continue;
}
index = demuxer->stream();
pkt = *demuxer->packet(); //TODO: how to avoid additional copy?
//connect to stop is ok too
if (pkt.isEnd()) {
qDebug("read end packet %d A:%d V:%d", index, audio_stream, video_stream);
end = true;
//avthread can stop. do not clear queue, make sure all data are played
if (audio_thread) {
audio_thread->setDemuxEnded(true);
}
if (video_thread) {
video_thread->setDemuxEnded(true);
}
break;
}
/*1 is empty but another is enough, then do not block to
ensure the empty one can put packets immediatly.
But usually it will not happen, why?
*/
/* demux thread will be blocked only when 1 queue is full and still put
* if vqueue is full and aqueue becomes empty, then demux thread
* will be blocked. so we should wake up another queue when empty(or threshold?).
* TODO: the video stream and audio stream may be group by group. provide it
* stream data: aaaaaaavvvvvvvaaaaaaaavvvvvvvvvaaaaaa, it happens
* stream data: aavavvavvavavavavavavavavvvaavavavava, it's ok
*/
//TODO: use cache queue, take from cache queue if not empty?
if (index == audio_stream) {
/* if vqueue if not blocked and full, and aqueue is empty, then put to
* vqueue will block demuex thread
*/
if (aqueue) {
if (!audio_thread || !audio_thread->isRunning()) {
aqueue->clear();
continue;
}
if (vqueue)
aqueue->blockFull(vqueue->isEnough() || demuxer->hasAttacedPicture());
aqueue->put(pkt); //affect video_thread
}
} else if (index == video_stream) {
if (!video_thread || !video_thread->isRunning()) {
vqueue->clear();
continue;
}
//.........这里部分代码省略.........