ossimVideoSource.h

Go to the documentation of this file.

//**************************************************************************************************
//                          OSSIM -- Open Source Software Image Map
//
// LICENSE: See top level LICENSE.txt file.
//
// AUTHOR: Oscar Kramer, GeoEye Inc.
//
// DESCRIPTION: 
// 
//**************************************************************************************************
//  $Id: ossimVideoSource.h 2695 2011-06-08 21:12:15Z oscar.kramer $

#ifndef ossimVideoSource_HEADER
#define ossimVideoSource_HEADER

#include <ossim/base/ossimRefPtr.h>
#include <ossim/base/ossimSource.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/base/ossimIpt.h>

class ossimVideoGeometry;
class ossimVideoImageHandler;

//*************************************************************************************************
//*************************************************************************************************
class OSSIMDLLEXPORT ossimVideoSource : public ossimSource
{
public:
   
   enum SeekType
   {
      SEEK_NONE     = 0,
      SEEK_RELATIVE = 1,
      SEEK_ABSOLUTE = 2
   };

   //**********************************************************************************************
   // The following are first declared in ossimVideoSource (and derived types).
   // Generally implemented as pass-through calls to this objects video source input.
   //**********************************************************************************************
   virtual void rewind();

   virtual bool seek(ossim_float64 reference_time_sec, SeekType seekType);

   virtual bool nextFrame();

   virtual ossim_float64 duration() const;

   virtual ossim_uint32 getNumberOfFrames() const;

   virtual ossim_float64 currentFrameTime() const;
   
   virtual ossim_float64 videoFrameRate() const;
   
   int computeFrameNumber(double seconds_from_start) const;

   double computeFrameTime(ossim_uint32 frame_count)  const;

   virtual const ossimRefPtr<ossimVideoGeometry> getVideoGeometry() const;

   virtual const ossimRefPtr<ossimVideoImageHandler> getCurrentFrame() const;

   const ossimIpt& frameSize() const { return m_frameSize; }

   //**********************************************************************************************
   // The following are implementations of ossimConnectableObject virtuals:
   //**********************************************************************************************
   virtual bool canConnectMyInputTo(ossim_int32 index, const ossimConnectableObject* object) const;
   
   virtual bool canConnectMyOutputTo(ossim_int32 index, const ossimConnectableObject* object) const;
   
protected:
   ossimVideoSource();

   ossimIpt m_frameSize;        

   TYPE_DATA

};
#endif