Added volume property to QMediaRecorder

Change-Id: I19f727107651c9f640ca1c010a3764f05aef8820
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

src/plugins/gstreamer/mediacapture/qgstreamercapturesession.cpp

@@ -86,6 +86,7 @@ QGstreamerCaptureSession::QGstreamerCaptureSession(QGstreamerCaptureSession::Cap
      m_audioPreview(0),
      m_audioVolume(0),
      m_muted(false),
+     m_volume(1.0),
      m_videoSrc(0),
      m_videoTee(0),
      m_videoPreviewQueue(0),
@@ -163,7 +164,8 @@ GstElement *QGstreamerCaptureSession::buildEncodeBin()
             return 0;
         }
 
-        g_object_set(G_OBJECT(m_audioVolume), "volume", (m_muted ? 0.0 : 1.0), NULL);
+        g_object_set(G_OBJECT(m_audioVolume), "mute", m_muted, NULL);
+        g_object_set(G_OBJECT(m_audioVolume), "volume", m_volume, NULL);
 
         // add ghostpads
         GstPad *pad = gst_element_get_static_pad(audioConvert, "sink");
@@ -1012,14 +1014,26 @@ bool QGstreamerCaptureSession::processBusMessage(const QGstreamerMessage &messag
 
 void QGstreamerCaptureSession::setMuted(bool muted)
 {
-    if (m_muted != muted) {
+    if (bool(m_muted) != muted) {
         m_muted = muted;
         if (m_audioVolume)
-            g_object_set(G_OBJECT(m_audioVolume), "volume", (m_muted ? 0.0 : 1.0), NULL);
+            g_object_set(G_OBJECT(m_audioVolume), "mute", m_muted, NULL);
+
         emit mutedChanged(muted);
     }
 }
 
+void QGstreamerCaptureSession::setVolume(qreal volume)
+{
+    if (!qFuzzyCompare(volume, m_volume)) {
+        m_volume = volume;
+        if (m_audioVolume)
+            g_object_set(G_OBJECT(m_audioVolume), "volume", m_volume, NULL);
+
+        emit volumeChanged(volume);
+    }
+}
+
 void QGstreamerCaptureSession::addProbe(QGstreamerAudioProbeControl* probe)
 {
     QMutexLocker locker(&m_audioProbeMutex);

src/plugins/gstreamer/mediacapture/qgstreamercapturesession.h

@@ -131,6 +131,7 @@ public:
 
     qint64 duration() const;
     bool isMuted() const { return m_muted; }
+    qreal volume() const { return m_volume; }
 
     bool isReady() const;
 
@@ -148,6 +149,7 @@ signals:
     void imageCaptured(int requestId, const QImage &img);
     void imageSaved(int requestId, const QString &path);
     void mutedChanged(bool);
+    void volumeChanged(qreal);
     void readyChanged(bool);
     void viewfinderChanged();
 
@@ -159,6 +161,7 @@ public slots:
 
     void setMetaData(const QMap<QByteArray, QVariant>&);
     void setMuted(bool);
+    void setVolume(qreal volume);
 
 private:
     enum PipelineMode { EmptyPipeline, PreviewPipeline, RecordingPipeline, PreviewAndRecordingPipeline };
@@ -210,7 +213,8 @@ private:
     GstElement *m_audioPreviewQueue;
     GstElement *m_audioPreview;
     GstElement *m_audioVolume;
-    bool m_muted;
+    gboolean m_muted;
+    double m_volume;
 
     GstElement *m_videoSrc;
     GstElement *m_videoTee;

src/plugins/gstreamer/mediacapture/qgstreamerrecordercontrol.cpp

@@ -56,6 +56,7 @@ QGstreamerRecorderControl::QGstreamerRecorderControl(QGstreamerCaptureSession *s
     connect(m_session, SIGNAL(error(int,QString)), SLOT(handleSessionError(int,QString)));
     connect(m_session, SIGNAL(durationChanged(qint64)), SIGNAL(durationChanged(qint64)));
     connect(m_session, SIGNAL(mutedChanged(bool)), SIGNAL(mutedChanged(bool)));
+    connect(m_session, SIGNAL(volumeChanged(qreal)), SIGNAL(volumeChanged(qreal)));
     m_hasPreviewState = m_session->captureMode() != QGstreamerCaptureSession::Audio;
 }
 
@@ -309,11 +310,21 @@ bool QGstreamerRecorderControl::isMuted() const
     return m_session->isMuted();
 }
 
+qreal QGstreamerRecorderControl::volume() const
+{
+    return m_session->volume();
+}
+
 void QGstreamerRecorderControl::setMuted(bool muted)
 {
     m_session->setMuted(muted);
 }
 
+void QGstreamerRecorderControl::setVolume(qreal volume)
+{
+    m_session->setVolume(volume);
+}
+
 QDir QGstreamerRecorderControl::defaultDir() const
 {
     QStringList dirCandidates;

src/plugins/gstreamer/mediacapture/qgstreamerrecordercontrol.h

@@ -67,6 +67,7 @@ public:
     qint64 duration() const;
 
     bool isMuted() const;
+    qreal volume() const;
 
     void applySettings();
 
@@ -76,6 +77,7 @@ public slots:
     void pause();
     void stop();
     void setMuted(bool);
+    void setVolume(qreal volume);
 
 private slots:
     void updateStatus();