qtmultimedia/src/plugins/gstreamer/mediaplayer/qgstreamerplayerservice.cpp

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** Contact: http://www.qt-project.org/
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#include <QtCore/qvariant.h>
#include <QtCore/qdebug.h>

#if defined(HAVE_WIDGETS)
#include <QtWidgets/qwidget.h>
#endif

#include "qgstreamerplayerservice.h"
#include "qgstreamerplayercontrol.h"
#include "qgstreamerplayersession.h"
#include "qgstreamermetadataprovider.h"
#include "qgstreameravailabilitycontrol.h"

#if defined(HAVE_WIDGETS)
#include <private/qgstreamervideooverlay_p.h>
#include <private/qgstreamervideowindow_p.h>
#include <private/qgstreamervideowidget_p.h>
#endif

#include <private/qgstreamervideorenderer_p.h>

#if defined(Q_WS_MAEMO_6) && defined(__arm__)
#include "qgstreamergltexturerenderer.h"
#endif

#include "qgstreamerstreamscontrol.h"
#include <private/qgstreameraudioprobecontrol_p.h>
#include <private/qgstreamervideoprobecontrol_p.h>

#include <private/qmediaplaylistnavigator_p.h>
#include <qmediaplaylist.h>
#include <private/qmediaresourceset_p.h>

QT_BEGIN_NAMESPACE

QGstreamerPlayerService::QGstreamerPlayerService(QObject *parent):
     QMediaService(parent)
     , m_videoOutput(0)
     , m_videoRenderer(0)
#if defined(HAVE_XVIDEO) && defined(HAVE_WIDGETS)
     , m_videoWindow(0)
     , m_videoWidget(0)
#endif
     , m_videoReferenceCount(0)
{
    m_session = new QGstreamerPlayerSession(this);
    m_control = new QGstreamerPlayerControl(m_session, this);
    m_metaData = new QGstreamerMetaDataProvider(m_session, this);
    m_streamsControl = new QGstreamerStreamsControl(m_session,this);
    m_availabilityControl = new QGStreamerAvailabilityControl(m_control->resources(), this);

#if defined(Q_WS_MAEMO_6) && defined(__arm__)
    m_videoRenderer = new QGstreamerGLTextureRenderer(this);
#else
    m_videoRenderer = new QGstreamerVideoRenderer(this);
#endif

#if defined(HAVE_XVIDEO) && defined(HAVE_WIDGETS)
#ifdef Q_WS_MAEMO_6
    m_videoWindow = new QGstreamerVideoWindow(this, "omapxvsink");
#else
    m_videoWindow = new QGstreamerVideoOverlay(this);
#endif
    m_videoWidget = new QGstreamerVideoWidgetControl(this);
#endif
}

QGstreamerPlayerService::~QGstreamerPlayerService()
{
}

QMediaControl *QGstreamerPlayerService::requestControl(const char *name)
{
    if (qstrcmp(name,QMediaPlayerControl_iid) == 0)
        return m_control;

    if (qstrcmp(name,QMetaDataReaderControl_iid) == 0)
        return m_metaData;

    if (qstrcmp(name,QMediaStreamsControl_iid) == 0)
        return m_streamsControl;

    if (qstrcmp(name, QMediaAvailabilityControl_iid) == 0)
        return m_availabilityControl;

    if (qstrcmp(name,QMediaVideoProbeControl_iid) == 0) {
        if (m_session) {
            QGstreamerVideoProbeControl *probe = new QGstreamerVideoProbeControl(this);
            increaseVideoRef();
            m_session->addProbe(probe);
            return probe;
        }
        return 0;
    }

    if (qstrcmp(name,QMediaAudioProbeControl_iid) == 0) {
        if (m_session) {
            QGstreamerAudioProbeControl *probe = new QGstreamerAudioProbeControl(this);
            m_session->addProbe(probe);
            return probe;
        }
        return 0;
    }

    if (!m_videoOutput) {
        if (qstrcmp(name, QVideoRendererControl_iid) == 0)
            m_videoOutput = m_videoRenderer;
#if defined(HAVE_XVIDEO) && defined(HAVE_WIDGETS)
        else if (qstrcmp(name, QVideoWidgetControl_iid) == 0)
            m_videoOutput = m_videoWidget;
        else  if (qstrcmp(name, QVideoWindowControl_iid) == 0)
            m_videoOutput = m_videoWindow;
#endif

        if (m_videoOutput) {
            increaseVideoRef();
            m_control->setVideoOutput(m_videoOutput);
            return m_videoOutput;
        }
    }

    return 0;
}

void QGstreamerPlayerService::releaseControl(QMediaControl *control)
{
    if (control == m_videoOutput) {
        m_videoOutput = 0;
        m_control->setVideoOutput(0);
        decreaseVideoRef();
    }

    QGstreamerVideoProbeControl* videoProbe = qobject_cast<QGstreamerVideoProbeControl*>(control);
    if (videoProbe) {
        if (m_session) {
            m_session->removeProbe(videoProbe);
            decreaseVideoRef();
        }
        delete videoProbe;
        return;
    }

    QGstreamerAudioProbeControl* audioProbe = qobject_cast<QGstreamerAudioProbeControl*>(control);
    if (audioProbe) {
        if (m_session)
            m_session->removeProbe(audioProbe);
        delete audioProbe;
        return;
    }
}

void QGstreamerPlayerService::increaseVideoRef()
{
    m_videoReferenceCount++;
    if (m_videoReferenceCount == 1) {
        m_control->resources()->setVideoEnabled(true);
    }
}

void QGstreamerPlayerService::decreaseVideoRef()
{
    m_videoReferenceCount--;
    if (m_videoReferenceCount == 0) {
        m_control->resources()->setVideoEnabled(false);
    }
}

QT_END_NAMESPACE