コード例 #1
0
ファイル: AVPlayer.cpp プロジェクト: 383530895/QtAV
void AVPlayer::setSpeed(qreal speed)
{
    if (speed == mSpeed)
        return;
    mSpeed = speed;
    //TODO: check clock type?
    if (_audio && _audio->isAvailable()) {
        qDebug("set speed %.2f", mSpeed);
        _audio->setSpeed(mSpeed);
    } else {
        masterClock()->setSpeed(mSpeed);
    }
    emit speedChanged(mSpeed);
}
コード例 #2
0
ファイル: AVPlayer.cpp プロジェクト: tianqizi/QtAV
void AVPlayer::setupAudioThread()
{
    if (aCodecCtx) {
        qDebug("has audio");
        if (!audio_dec) {
            audio_dec = new AudioDecoder();
        }
        qDebug("setCodecContext");
        audio_dec->setCodecContext(aCodecCtx);
        //TODO: setAudioOutput() like vo
        if (!_audio) {
            qDebug("new audio output");
#if HAVE_OPENAL
            _audio = new AOOpenAL();
#elif HAVE_PORTAUDIO
            _audio = new AOPortAudio();
#endif
        }
        if (!_audio) {
            masterClock()->setClockType(AVClock::ExternalClock);
            return;
        }
        _audio->setSampleRate(aCodecCtx->sample_rate);
        _audio->setChannels(aCodecCtx->channels);
        if (!_audio->open()) {
            //return; //audio not ready
        }
        if (!audio_thread) {
            qDebug("new audio thread");
            audio_thread = new AudioThread(this);
            audio_thread->setClock(clock);
            audio_thread->setDecoder(audio_dec);
            audio_thread->setStatistics(&mStatistics);
            qDebug("demux thread setAudioThread");
            demuxer_thread->setAudioThread(audio_thread);
            //reconnect if disconnected
        }
        setAudioOutput(_audio);
        /*if has video, connect video's only to avoid emitting stopped() mulltiple times
         *otherwise connect audio's. but if video exists previously and now is null.
         *audio thread will not change. so connection should be here
         */
        if (!vCodecCtx) {
            disconnect(audio_thread, SIGNAL(finished()), this, SIGNAL(stopped()));
            connect(audio_thread, SIGNAL(finished()), this, SIGNAL(stopped()), Qt::DirectConnection);
        }
        int queue_min = 0.61803*qMax<qreal>(24.0, mStatistics.video.fps);
        int queue_max = int(1.61803*(qreal)queue_min); //about 1 second
        audio_thread->packetQueue()->setThreshold(queue_min);
        audio_thread->packetQueue()->setCapacity(queue_max);
    } else {
        //set 0 before delete because demux thread will use the address
        //TODO: use avthread** ?
        demuxer_thread->setAudioThread(0);
        if (audio_thread) {
            qDebug("release audio thread.");
            delete audio_thread;
            audio_thread = 0; //shared ptr?
        }
        if (audio_dec) {
            delete audio_dec;
            audio_dec = 0;
        }
        //DO NOT delete AVOutput. it is setted by user
    }
}