mediaplayerprivategstreamer.cpp

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}

void MediaPlayerPrivate::setVolume(float volume)
{
    m_volume = volume;
    LOG_VERBOSE(Media, "Volume to %f", volume);
    setMuted(false);
}

void MediaPlayerPrivate::setMuted(bool b)
{
    if (!m_playBin)
        return;

    if (b) {
        g_object_get(G_OBJECT(m_playBin), "volume", &m_volume, NULL);
        g_object_set(G_OBJECT(m_playBin), "volume", (double)0.0, NULL);
    } else {
        g_object_set(G_OBJECT(m_playBin), "volume", m_volume, NULL);
    }
}

void MediaPlayerPrivate::setRate(float rate)
{
    if (rate == 0.0) {
        gst_element_set_state(m_playBin, GST_STATE_PAUSED);
        return;
    }
    if (m_isStreaming)
        return;

    m_rate = rate;
    LOG_VERBOSE(Media, "Set Rate to %f", rate);
    if (!gst_element_seek(m_playBin, rate,
            GST_FORMAT_TIME,
            (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE),
            GST_SEEK_TYPE_SET, (GstClockTime) (currentTime() * GST_SECOND),
            GST_SEEK_TYPE_SET, (GstClockTime) (m_endTime * GST_SECOND)))
        LOG_VERBOSE(Media, "Set Rate to %f failed", rate);
}

int MediaPlayerPrivate::dataRate() const
{
    notImplemented();
    return 1;
}

MediaPlayer::NetworkState MediaPlayerPrivate::networkState() const
{
    return m_networkState;
}

MediaPlayer::ReadyState MediaPlayerPrivate::readyState() const
{
    return m_readyState;
}

float MediaPlayerPrivate::maxTimeBuffered() const
{
    notImplemented();
    LOG_VERBOSE(Media, "maxTimeBuffered");
    // rtsp streams are not buffered
    return m_isStreaming ? 0 : maxTimeLoaded();
}

float MediaPlayerPrivate::maxTimeSeekable() const
{
    // TODO
    LOG_VERBOSE(Media, "maxTimeSeekable");
    if (m_isStreaming)
        return numeric_limits<float>::infinity();
    // infinite duration means live stream
    return maxTimeLoaded();
}

float MediaPlayerPrivate::maxTimeLoaded() const
{
    // TODO
    LOG_VERBOSE(Media, "maxTimeLoaded");
    notImplemented();
    return duration();
}

unsigned MediaPlayerPrivate::bytesLoaded() const
{
    notImplemented();
    LOG_VERBOSE(Media, "bytesLoaded");
    /*if (!m_playBin)
        return 0;
    float dur = duration();
    float maxTime = maxTimeLoaded();
    if (!dur)
        return 0;*/
    return 1;//totalBytes() * maxTime / dur;
}

bool MediaPlayerPrivate::totalBytesKnown() const
{
    notImplemented();
    LOG_VERBOSE(Media, "totalBytesKnown");
    return totalBytes() > 0;
}

unsigned MediaPlayerPrivate::totalBytes() const
{
    notImplemented();
    LOG_VERBOSE(Media, "totalBytes");
    if (!m_playBin)
        return 0;

    if (!m_source)
        return 0;

    // Do something with m_source to get the total bytes of the media

    return 100;
}

void MediaPlayerPrivate::cancelLoad()
{
    notImplemented();
}

void MediaPlayerPrivate::updateStates()
{
    // There is no (known) way to get such level of information about
    // the state of GStreamer, therefore, when in PAUSED state,
    // we are sure we can display the first frame and go to play

    MediaPlayer::NetworkState oldNetworkState = m_networkState;
    MediaPlayer::ReadyState oldReadyState = m_readyState;
    GstState state;
    GstState pending;

    if (!m_playBin)
        return;

    GstStateChangeReturn ret = gst_element_get_state (m_playBin,
        &state, &pending, 250 * GST_NSECOND);

    switch(ret) {
    case GST_STATE_CHANGE_SUCCESS:
        LOG_VERBOSE(Media, "State: %s, pending: %s",
            gst_element_state_get_name(state),
            gst_element_state_get_name(pending));

        if (state == GST_STATE_READY) {
            m_readyState = MediaPlayer::CanPlayThrough;
        } else if (state == GST_STATE_PAUSED) {
            m_readyState = MediaPlayer::CanPlayThrough;
        }
        if (m_networkState < MediaPlayer::Loaded)
            m_networkState = MediaPlayer::Loaded;

        g_object_get(m_playBin, "source", &m_source, NULL);
        if (!m_source)
            LOG_VERBOSE(Media, "m_source is NULL");
        break;
    case GST_STATE_CHANGE_ASYNC:
        LOG_VERBOSE(Media, "Async: State: %s, pending: %s",
            gst_element_state_get_name(state),
            gst_element_state_get_name(pending));
        // Change in progress
        return;
        break;
    case GST_STATE_CHANGE_NO_PREROLL:
        LOG_VERBOSE(Media, "No preroll: State: %s, pending: %s",
            gst_element_state_get_name(state),
            gst_element_state_get_name(pending));
        if (state == GST_STATE_READY) {
            m_readyState = MediaPlayer::CanPlay;
        } else if (state == GST_STATE_PAUSED) {
            m_readyState = MediaPlayer::CanPlay;
        }
        if (m_networkState < MediaPlayer::LoadedMetaData)
            m_networkState = MediaPlayer::LoadedMetaData;
        break;
    default:
        LOG_VERBOSE(Media, "Else : %d", ret);
        break;
    }

    if (seeking())
        m_readyState = MediaPlayer::DataUnavailable;

    if (m_networkState != oldNetworkState) {
        LOG_VERBOSE(Media, "Network State Changed from %u to %u",
            oldNetworkState, m_networkState);
        m_player->networkStateChanged();
    }
    if (m_readyState != oldReadyState) {
        LOG_VERBOSE(Media, "Ready State Changed from %u to %u",
            oldReadyState, m_readyState);
        m_player->readyStateChanged();
    }
}

void MediaPlayerPrivate::loadStateChanged()
{
    updateStates();
}

void MediaPlayerPrivate::rateChanged()
{
    updateStates();
}

void MediaPlayerPrivate::sizeChanged()
{
    notImplemented();
}

void MediaPlayerPrivate::timeChanged()
{
    updateStates();
    m_player->timeChanged();
}

void MediaPlayerPrivate::volumeChanged()
{
    m_player->volumeChanged();
}

void MediaPlayerPrivate::didEnd()
{
    m_isEndReached = true;
    pause();
    timeChanged();
}

void MediaPlayerPrivate::loadingFailed()
{
    if (m_networkState != MediaPlayer::LoadFailed) {
        m_networkState = MediaPlayer::LoadFailed;
        m_player->networkStateChanged();
    }
    if (m_readyState != MediaPlayer::DataUnavailable) {
        m_readyState = MediaPlayer::DataUnavailable;
        m_player->readyStateChanged();
    }
}

void MediaPlayerPrivate::setSize(const IntSize& size)
{
    m_size = size;
}

void MediaPlayerPrivate::setVisible(bool visible)
{
    m_visible = visible;
}

void MediaPlayerPrivate::repaint()
{
    m_player->repaint();
}

void MediaPlayerPrivate::paint(GraphicsContext* context, const IntRect& rect)
{
    if (context->paintingDisabled())
        return;

    if (!m_visible)
        return;

    //TODO: m_size vs rect?
    cairo_t* cr = context->platformContext();

    cairo_save(cr);
    cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
    cairo_translate(cr, rect.x(), rect.y());
    cairo_rectangle(cr, 0, 0, rect.width(), rect.height());
    cairo_set_source_surface(cr, m_surface, 0, 0);
    cairo_fill(cr);
    cairo_restore(cr);
}

void MediaPlayerPrivate::getSupportedTypes(HashSet<String>& types)
{
    // FIXME: query the engine to see what types are supported
    notImplemented();
    types.add(String("video/x-theora+ogg"));
}

MediaPlayer::SupportsType MediaPlayerPrivate::supportsType(const String& type, const String& codecs)
{
    // FIXME: query the engine to see what types are supported
    notImplemented();
    return type == "video/x-theora+ogg" ? (!codecs.isEmpty() ? MediaPlayer::MayBeSupported : MediaPlayer::IsSupported) : MediaPlayer::IsNotSupported;
}

void MediaPlayerPrivate::createGSTPlayBin(String url)
{
    ASSERT(!m_playBin);
    m_playBin = gst_element_factory_make("playbin", "play");

    GstBus* bus = gst_pipeline_get_bus(GST_PIPELINE(m_playBin));
    gst_bus_add_signal_watch(bus);
    g_signal_connect(bus, "message::error", G_CALLBACK(mediaPlayerPrivateErrorCallback), this);
    g_signal_connect(bus, "message::eos", G_CALLBACK(mediaPlayerPrivateEOSCallback), this);
    g_signal_connect(bus, "message::state-changed", G_CALLBACK(mediaPlayerPrivateStateCallback), this);
    g_signal_connect(bus, "message::buffering", G_CALLBACK(mediaPlayerPrivateBufferingCallback), this);
    gst_object_unref(bus);

    g_object_set(G_OBJECT(m_playBin), "uri", url.utf8().data(), NULL);

    GstElement* audioSink = gst_element_factory_make("gconfaudiosink", NULL);
    m_videoSink = webkit_video_sink_new(m_surface);

    g_object_set(m_playBin, "audio-sink", audioSink, NULL);
    g_object_set(m_playBin, "video-sink", m_videoSink, NULL);

    setVolume(m_volume);
}

}

#endif