ossimJpeg12NitfReader.h

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//----------------------------------------------------------------------------
//
// License: MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author: Refactor from Mingjie Su's ossimNitfTileSource_12.
//
// Description:
//
// Class declaration for reader of NITF images with 12 bit jpeg compressed
// blocks using libjpeg-turbo library compiled specifically with
// "--with-12bit" compiler option.
//
//----------------------------------------------------------------------------
// $Id

#ifndef ossimJpeg12NitfReader_HEADER
#define ossimJpeg12NitfReader_HEADER 1

#include <ossim/plugin/ossimPluginConstants.h>
#include <ossim/imaging/ossimNitfTileSource.h>

class ossimImageData;
class ossimNitfImageHeader;
struct jpeg12_decompress_struct;

class OSSIM_PLUGINS_DLL ossimJpeg12NitfReader : public ossimNitfTileSource
{
public:


protected:
   virtual bool canUncompress(const ossimNitfImageHeader* hdr) const;

   virtual bool uncompressJpegBlock(ossim_uint32 x, ossim_uint32 y);

   bool loadJpeg12QuantizationTables(jpeg12_decompress_struct& cinfo) const;

   bool loadJpeg12HuffmanTables(jpeg12_decompress_struct& cinfo) const;
   

TYPE_DATA   
};

#endif /* #ifndef ossimJpeg12NitfReader_HEADER */