From Stephan Huber, OSX and iOS Video support via a QTKit plugin from OSX 10.7 and before, and an AVFoundation plugin for iOS and OSX10.8 and later.

include/osg/Image

@@ -442,12 +442,31 @@ class OSG_EXPORT Image : public BufferData
 
         /** Pass frame information to the custom Image classes, to be called only when objects associated with imagery are not culled.*/
         virtual void setFrameLastRendered(const osg::FrameStamp* /*frameStamp*/) {}
+        
+        class DimensionsChangedCallback : public osg::Referenced {
+        public:
+            DimensionsChangedCallback() : osg::Referenced() {}
+            virtual void operator()(osg::Image* image) = 0;
+        };
+        
+        typedef std::vector< osg::ref_ptr<DimensionsChangedCallback> > DimensionsChangedCallbackVector;
+        
+        void addDimensionsChangedCallback(DimensionsChangedCallback* cb);
+        void removeDimensionsChangedCallback(DimensionsChangedCallback* cb);
 
     protected :
 
         virtual ~Image();
 
         Image& operator = (const Image&) { return *this; }
+        
+        void handleDimensionsChangedCallbacks() 
+        {
+            for(DimensionsChangedCallbackVector::iterator i = _dimensionsChangedCallbacks.begin(); i != _dimensionsChangedCallbacks.end(); ++i)
+            {
+                (*i)->operator()(this);
+            }
+        }
 
         std::string _fileName;
         WriteHint   _writeHint;
@@ -473,6 +492,8 @@ class OSG_EXPORT Image : public BufferData
         MipmapDataType _mipmapData;
 
         ref_ptr<PixelBufferObject> _bufferObject;
+        
+        DimensionsChangedCallbackVector _dimensionsChangedCallbacks;
 };
 
 class Geode;

include/osg/ImageStream

@@ -57,7 +57,7 @@ class OSG_EXPORT ImageStream : public Image
 
         virtual void quit(bool /*waitForThreadToExit*/ = true) {}
 
-        StreamStatus getStatus() { return _status; }
+        StreamStatus getStatus() const { return _status; }
 
 
         enum LoopingMode
@@ -89,6 +89,10 @@ class OSG_EXPORT ImageStream : public Image
 
         virtual void setVolume(float) {}
         virtual float getVolume() const { return 0.0f; }
+        
+        /// set the balance of the audio: -1 = left, 0 = center,  1 = right
+        virtual float getAudioBalance() { return 0.0f; }
+        virtual void setAudioBalance(float b) {}
 
         typedef std::vector< osg::ref_ptr<osg::AudioStream> > AudioStreams;
         void setAudioStreams(const AudioStreams& asl) { _audioStreams = asl; }