Implemented availability control for gstreamer player backend

Change-Id: I6d736b90ad59e258eb6f20befea8cfe1afce423a
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

src/plugins/gstreamer/mediaplayer/mediaplayer.pri

@@ -7,13 +7,15 @@ HEADERS += \
     $$PWD/qgstreamerplayerservice.h \
     $$PWD/qgstreamerplayersession.h \
     $$PWD/qgstreamerstreamscontrol.h \
-    $$PWD/qgstreamermetadataprovider.h
+    $$PWD/qgstreamermetadataprovider.h \
+    $$PWD/qgstreameravailabilitycontrol.h
 
 SOURCES += \
     $$PWD/qgstreamerplayercontrol.cpp \
     $$PWD/qgstreamerplayerservice.cpp \
     $$PWD/qgstreamerplayersession.cpp \
     $$PWD/qgstreamerstreamscontrol.cpp \
-    $$PWD/qgstreamermetadataprovider.cpp
+    $$PWD/qgstreamermetadataprovider.cpp \
+    $$PWD/qgstreameravailabilitycontrol.cpp
 
 

src/plugins/gstreamer/mediaplayer/qgstreameravailabilitycontrol.cpp

@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgstreameravailabilitycontrol.h"
+#include <private/qmediaresourceset_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QGStreamerAvailabilityControl::QGStreamerAvailabilityControl(
+        QMediaPlayerResourceSetInterface *resources, QObject *parent)
+    : QMediaAvailabilityControl(parent)
+    , m_resources(resources)
+{
+    Q_ASSERT(m_resources);
+    connect(m_resources, SIGNAL(availabilityChanged(bool)), this, SLOT(handleAvailabilityChanged()));
+}
+
+void QGStreamerAvailabilityControl::handleAvailabilityChanged()
+{
+    emit availabilityChanged(this->availability());
+}
+
+QtMultimedia::AvailabilityError QGStreamerAvailabilityControl::availability() const
+{
+    return m_resources->isAvailable() ? QtMultimedia::NoError : QtMultimedia::BusyError;
+}
+
+QT_END_NAMESPACE

src/plugins/gstreamer/mediaplayer/qgstreameravailabilitycontrol.h

@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGSTREAMERAVAILABILITYCONTROL_H
+#define QGSTREAMERAVAILABILITYCONTROL_H
+
+#include <QObject>
+#include <qmediaavailabilitycontrol.h>
+
+QT_BEGIN_NAMESPACE
+
+class QMediaPlayerResourceSetInterface;
+class QGStreamerAvailabilityControl : public QMediaAvailabilityControl
+{
+    Q_OBJECT
+public:
+    QGStreamerAvailabilityControl(QMediaPlayerResourceSetInterface *resources, QObject *parent = 0);
+    QtMultimedia::AvailabilityError availability() const;
+
+private Q_SLOTS:
+    void handleAvailabilityChanged();
+
+private:
+    QMediaPlayerResourceSetInterface *m_resources;
+};
+
+QT_END_NAMESPACE
+
+#endif // QGSTREAMERAVAILABILITYCONTROL_H

src/plugins/gstreamer/mediaplayer/qgstreamerplayercontrol.cpp

@@ -127,6 +127,11 @@ QGstreamerPlayerControl::~QGstreamerPlayerControl()
     }
 }
 
+QMediaPlayerResourceSetInterface* QGstreamerPlayerControl::resources() const
+{
+    return m_resources;
+}
+
 qint64 QGstreamerPlayerControl::position() const
 {
     return m_seekToStartPending ? 0 : m_session->position();

src/plugins/gstreamer/mediaplayer/qgstreamerplayercontrol.h

@@ -97,6 +97,8 @@ public:
     bool isMediaDownloadEnabled() const;
     void setMediaDownloadEnabled(bool enabled);
 
+    QMediaPlayerResourceSetInterface* resources() const;
+
 public Q_SLOTS:
     void setPosition(qint64 pos);
 

src/plugins/gstreamer/mediaplayer/qgstreamerplayerservice.cpp

@@ -50,6 +50,7 @@
 #include "qgstreamerplayercontrol.h"
 #include "qgstreamerplayersession.h"
 #include "qgstreamermetadataprovider.h"
+#include "qgstreameravailabilitycontrol.h"
 
 #if defined(HAVE_WIDGETS)
 #include "qgstreamervideooverlay.h"
@@ -85,6 +86,7 @@ QGstreamerPlayerService::QGstreamerPlayerService(QObject *parent):
     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);
@@ -117,6 +119,9 @@ QMediaControl *QGstreamerPlayerService::requestControl(const char *name)
     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);

src/plugins/gstreamer/mediaplayer/qgstreamerplayerservice.h

@@ -61,6 +61,7 @@ class QGstreamerStreamsControl;
 class QGstreamerVideoRenderer;
 class QGstreamerVideoOverlay;
 class QGstreamerVideoWidgetControl;
+class QGStreamerAvailabilityControl;
 
 class QGstreamerPlayerService : public QMediaService
 {
@@ -77,6 +78,7 @@ private:
     QGstreamerPlayerSession *m_session;
     QGstreamerMetaDataProvider *m_metaData;
     QGstreamerStreamsControl *m_streamsControl;
+    QGStreamerAvailabilityControl *m_availabilityControl;
 
     QMediaControl *m_videoOutput;
     QMediaControl *m_videoRenderer;