ossimBitMaskTileSource.h

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//*******************************************************************
//
// License:  MIT
//
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  Oscar Kramer
//
//*******************************************************************
//  $Id: ossimBitMaskTileSource.h 2644 2011-05-26 15:20:11Z oscar.kramer $

#ifndef ossimBitMaskTileSource_HEADER
#define ossimBitMaskTileSource_HEADER

#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/imaging/ossimBitMaskWriter.h>

class ossimImageGeometry;

//*************************************************************************************************
//*************************************************************************************************

class OSSIM_DLL ossimBitMaskTileSource : public ossimImageHandler
{
public:

   ossimBitMaskTileSource();

   virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& tile_rect, ossim_uint32 rLevel=0);
   
   virtual bool         isValidRLevel     (ossim_uint32 res_level)   const;
   virtual ossim_uint32 getNumberOfLines  (ossim_uint32 res_level=0) const;
   virtual ossim_uint32 getNumberOfSamples(ossim_uint32 res_level=0) const;

   virtual ossim_uint32    getNumberOfInputBands()  const { return 1; }
   virtual ossim_uint32    getNumberOfOutputBands() const { return 1; }
   virtual ossimScalarType getOutputScalarType()    const { return OSSIM_UINT8; }
   virtual ossim_uint32    getImageTileWidth()      const { return 0; }
   virtual ossim_uint32    getImageTileHeight()     const { return 0; }   

   virtual bool isOpen() const;
   virtual bool open();
   virtual void close();

   virtual double getNullPixelValue(ossim_uint32 /*band=0*/) const { return 0; }
   virtual double getMinPixelValue (ossim_uint32 /*band=0*/) const { return 0; }
   virtual double getMaxPixelValue (ossim_uint32 /*band=0*/) const { return 1.0; }

   virtual ossimRefPtr<ossimImageGeometry> getImageGeometry();

   virtual ossim_uint32 getNumberOfDecimationLevels() const;

   void setAssociatedImageHandler(ossimImageHandler* handler);

   void setAssociatedMaskWriter(ossimBitMaskWriter* maskWriter);

protected:
   virtual ~ossimBitMaskTileSource();
   
   bool isSupportedExtension();

   virtual void establishDecimationFactors();

   ossimRefPtr<ossimImageData>  m_tile;
   vector<ossim_uint8*>         m_buffers;
   vector<ossimIpt>             m_bufferSizes;
   
   ossimRefPtr<ossimImageHandler>  m_handler;

   ossimRefPtr<ossimBitMaskWriter>  m_maskWriter;

   TYPE_DATA
};

#endif