1 files changed, 12 insertions, 0 deletions
diff --git a/src/imports/multimedia/qdeclarativemultimediaglobal_p.h b/src/imports/multimedia/qdeclarativemultimediaglobal_p.h
index 2374b560c..101bd899a 100644
--- a/src/imports/multimedia/qdeclarativemultimediaglobal_p.h
+++ b/src/imports/multimedia/qdeclarativemultimediaglobal_p.h
@@ -53,6 +53,7 @@
 
 #include <QtQml/qqml.h>
 #include <QtQml/qjsvalue.h>
+#include <QtMultimedia/qaudio.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -63,12 +64,23 @@ class QDeclarativeMultimediaGlobal : public QObject
     Q_PROPERTY(QJSValue defaultCamera READ defaultCamera NOTIFY defaultCameraChanged)
     Q_PROPERTY(QJSValue availableCameras READ availableCameras NOTIFY availableCamerasChanged)
 
+    Q_ENUMS(VolumeScale)
+
 public:
+    enum VolumeScale {
+        LinearVolumeScale = QAudio::LinearVolumeScale,
+        CubicVolumeScale = QAudio::CubicVolumeScale,
+        LogarithmicVolumeScale = QAudio::LogarithmicVolumeScale,
+        DecibelVolumeScale = QAudio::DecibelVolumeScale
+    };
+
     explicit QDeclarativeMultimediaGlobal(QJSEngine *engine, QObject *parent = 0);
 
     QJSValue defaultCamera() const;
     QJSValue availableCameras() const;
 
+    Q_INVOKABLE qreal convertVolume(qreal volume, VolumeScale from, VolumeScale to) const;
+
 Q_SIGNALS:
     // Unused at the moment. QCameraInfo doesn't notify when cameras are added or removed,
     // but it might change in the future.