/src/FreeImage/Source/OpenEXR/IlmImf/ImfPizCompressor.h

  1///////////////////////////////////////////////////////////////////////////
  2//
  3// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
  4// Digital Ltd. LLC
  5// 
  6// All rights reserved.
  7// 
  8// Redistribution and use in source and binary forms, with or without
  9// modification, are permitted provided that the following conditions are
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 12// notice, this list of conditions and the following disclaimer.
 13// *       Redistributions in binary form must reproduce the above
 14// copyright notice, this list of conditions and the following disclaimer
 15// in the documentation and/or other materials provided with the
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 18// its contributors may be used to endorse or promote products derived
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 33///////////////////////////////////////////////////////////////////////////
 34
 35
 36#ifndef INCLUDED_IMF_PIZ_COMPRESSOR_H
 37#define INCLUDED_IMF_PIZ_COMPRESSOR_H
 38
 39//-----------------------------------------------------------------------------
 40//
 41//	class PizCompressor -- uses Wavelet and Huffman encoding.
 42//
 43//-----------------------------------------------------------------------------
 44
 45#include <ImfCompressor.h>
 46
 47namespace Imf {
 48
 49class ChannelList;
 50
 51
 52class PizCompressor: public Compressor
 53{
 54  public:
 55
 56    PizCompressor (const Header &hdr,
 57                   size_t maxScanLineSize,
 58                   size_t numScanLines);
 59
 60    virtual ~PizCompressor ();
 61
 62    virtual int		numScanLines () const;
 63
 64    virtual Format	format () const;
 65
 66    virtual int		compress (const char *inPtr,
 67				  int inSize,
 68				  int minY,
 69				  const char *&outPtr);                  
 70                  
 71    virtual int		compressTile (const char *inPtr,
 72				      int inSize,
 73				      Imath::Box2i range,
 74				      const char *&outPtr);
 75
 76    virtual int		uncompress (const char *inPtr,
 77				    int inSize,
 78				    int minY,
 79				    const char *&outPtr);
 80                    
 81    virtual int		uncompressTile (const char *inPtr,
 82					int inSize,
 83					Imath::Box2i range,
 84					const char *&outPtr);
 85  private:
 86
 87    struct ChannelData;
 88    
 89    int			compress (const char *inPtr,
 90				  int inSize,
 91				  Imath::Box2i range,
 92				  const char *&outPtr);
 93 
 94    int			uncompress (const char *inPtr,
 95				    int inSize,
 96				    Imath::Box2i range,
 97				    const char *&outPtr);
 98
 99    int			_maxScanLineSize;
100    Format		_format;
101    int			_numScanLines;
102    unsigned short *	_tmpBuffer;
103    char *		_outBuffer;
104    int			_numChans;
105    const ChannelList &	_channels;
106    ChannelData *	_channelData;
107    int			_minX;
108    int			_maxX;
109    int			_maxY;
110};
111
112
113} // namespace Imf
114
115#endif