From Brad Christiansen, "Attached are some small changes to the ImageStream interface and the DirectShow and FFMPEG plugins to provide the current time being displayed in the image stream.

I don’t have access to an OSX or Linux dev machine to make the changes required to the quick time plugin. This plugin will just default to returning 0."

include/osg/ImageStream

@@ -79,6 +79,7 @@ class OSG_EXPORT ImageStream : public Image
         virtual double getCreationTime() const { return HUGE_VAL; }
         virtual double getLength() const { return 0.0; }
         virtual double getFrameRate() const { return 0.0; } 
+        virtual double getCurrentTime() const { return 0.0; }
 
         virtual void setReferenceTime(double) {}
         virtual double getReferenceTime() const { return 0.0; }

src/osgPlugins/directshow/DirectShowTexture

@@ -58,6 +58,7 @@ public:
     void rewind();
     osg::ImageStream::StreamStatus getStatus();
     void seek(double time);
+    double getCurrentTime() const;
     double getLength() const;
     double getFrameRate() const;
     void setTimeMultiplier(double rate);

src/osgPlugins/directshow/DirectShowTexture.cpp

@@ -1809,6 +1809,29 @@ void DirectShowImageStream::seek(double time)
     }
 
 }
+
+double DirectShowImageStream::getCurrentTime() const 
+{
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
+    double currentTime = -1;
+    if (_renderer.valid() && _renderer->_mediaSeeking)
+    {      
+       
+       LONGLONG curTimeLL = 0;
+       HRESULT hr = _renderer->_mediaSeeking->GetCurrentPosition(&curTimeLL);
+       if (FAILED(hr))
+       {
+            OSG_NOTICE << this << " " << getErrorMessage(hr) << std::endl;            
+       } 
+       else 
+       {
+           currentTime = static_cast<double>(curTimeLL);
+           currentTime = currentTime * (100.0 * 1e-9); // default unit in directshow IMediaSeeking 
+       }
+    }
+    return currentTime;
+}
+
 void DirectShowImageStream::setOptions(const Options& map)
 {
     for (Options::const_iterator it = map.begin(); it != map.end(); it++)

src/osgPlugins/ffmpeg/FFmpegImageStream.cpp

@@ -179,6 +179,11 @@ double FFmpegImageStream::getReferenceTime () const
     return m_decoder->reference();
 }
 
+double FFmpegImageStream::getCurrentTime() const
+{
+    return m_decoder->reference();
+}
+
 
 
 double FFmpegImageStream::getFrameRate() const

src/osgPlugins/ffmpeg/FFmpegImageStream.hpp

@@ -41,6 +41,7 @@ namespace osgFFmpeg
         virtual double getCreationTime() const;
         virtual double getLength() const;
         virtual double getReferenceTime () const; 
+        virtual double getCurrentTime() const;
         virtual double getFrameRate() const;
 
         virtual bool isImageTranslucent() const;