Exemplos de QMediaContent::canonicalRequest em C++ (Cpp)

Exemplo n.º 1

Arquivo: qgstreamerplayercontrol.cpp Projeto: bavanisp/qtmobility-1.1.0

void QGstreamerPlayerControl::setMedia(const QMediaContent &content, QIODevice *stream)
{
    QMediaPlayer::State oldState = m_state;
    m_state = QMediaPlayer::StoppedState;    
    m_session->stop();

    if (m_bufferProgress != -1) {
        m_bufferProgress = -1;
        emit bufferStatusChanged(0);
    }

    if (m_stream) {
        closeFifo();

        disconnect(m_stream, SIGNAL(readyRead()), this, SLOT(writeFifo()));
        m_stream = 0;
    }

    m_currentResource = content;
    m_stream = stream;
    m_seekToStartPending = false;

    QNetworkRequest request;

    if (m_stream) {
        if (m_stream->isReadable() && openFifo()) {
            request = QNetworkRequest(QUrl(QString(QLatin1String("fd://%1")).arg(m_fifoFd[0])));
        }
    } else if (!content.isNull()) {
        request = content.canonicalRequest();
    }

    m_session->load(request);    

    if (m_fifoFd[1] >= 0) {
        m_fifoCanWrite = true;

        writeFifo();
    }

    if (!request.url().isEmpty()) {
        if (m_mediaStatus != QMediaPlayer::LoadingMedia)
            emit mediaStatusChanged(m_mediaStatus = QMediaPlayer::LoadingMedia);
        m_session->pause();
    } else {
        if (m_mediaStatus != QMediaPlayer::NoMedia)
            emit mediaStatusChanged(m_mediaStatus = QMediaPlayer::NoMedia);
        setBufferProgress(0);
    }

    emit mediaChanged(m_currentResource);
    if (m_state != oldState)
        emit stateChanged(m_state);
}

Exemplo n.º 2

Arquivo: qgstreamerplayercontrol.cpp Projeto: venkatarajasekhar/Qt

void QGstreamerPlayerControl::setMedia(const QMediaContent &content, QIODevice *stream)
{
#ifdef DEBUG_PLAYBIN
    qDebug() << Q_FUNC_INFO;
#endif

    pushState();

    m_currentState = QMediaPlayer::StoppedState;
    QMediaContent oldMedia = m_currentResource;
    m_pendingSeekPosition = 0;
    m_session->showPrerollFrames(false); // do not show prerolled frames until pause() or play() explicitly called
    m_setMediaPending = false;

    if (!content.isNull() || stream) {
        if (!m_resources->isGranted())
            m_resources->acquire();
    } else {
        m_resources->release();
    }

    m_session->stop();

    bool userStreamValid = false;

    if (m_bufferProgress != -1) {
        m_bufferProgress = -1;
        emit bufferStatusChanged(0);
    }

    if (m_stream && m_stream != stream) {
        if (m_ownStream)
            delete m_stream;
        m_stream = 0;
        m_ownStream = false;
    }

    // If the canonical URL refers to a Qt resource, open with QFile and use
    // the stream playback capability to play.
    if (stream == 0 && content.canonicalUrl().scheme() == QLatin1String("qrc")) {
        stream = new QFile(QLatin1Char(':') + content.canonicalUrl().path(), this);
        if (!stream->open(QIODevice::ReadOnly)) {
            delete stream;
            m_mediaStatus = QMediaPlayer::InvalidMedia;
            m_currentResource = content;
            emit mediaChanged(m_currentResource);
            emit error(QMediaPlayer::FormatError, tr("Attempting to play invalid Qt resource"));
            if (m_currentState != QMediaPlayer::PlayingState)
                m_resources->release();
            popAndNotifyState();
            return;
        }
        m_ownStream = true;
    }

    m_currentResource = content;
    m_stream = stream;

    QNetworkRequest request;

    if (m_stream) {
        userStreamValid = stream->isOpen() && m_stream->isReadable();
        request = content.canonicalRequest();
    } else if (!content.isNull()) {
        request = content.canonicalRequest();
    }

#if !defined(HAVE_GST_APPSRC)
    m_session->loadFromUri(request);
#else
    if (m_stream) {
        if (userStreamValid){
            m_session->loadFromStream(request, m_stream);
        } else {
            m_mediaStatus = QMediaPlayer::InvalidMedia;
            emit error(QMediaPlayer::FormatError, tr("Attempting to play invalid user stream"));
            if (m_currentState != QMediaPlayer::PlayingState)
                m_resources->release();
            popAndNotifyState();
            return;
        }
    } else
        m_session->loadFromUri(request);
#endif


#if defined(HAVE_GST_APPSRC)
    if (!request.url().isEmpty() || userStreamValid) {
#else
    if (!request.url().isEmpty()) {
#endif
        m_mediaStatus = QMediaPlayer::LoadingMedia;
        m_session->pause();
    } else {
        m_mediaStatus = QMediaPlayer::NoMedia;
        setBufferProgress(0);
    }

    if (m_currentResource != oldMedia)
        emit mediaChanged(m_currentResource);

    emit positionChanged(position());

    if (content.isNull() && !stream)
        m_resources->release();

    popAndNotifyState();
}

void QGstreamerPlayerControl::setVideoOutput(QObject *output)
{
    m_session->setVideoRenderer(output);
}