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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 #include "ImfNamespace.h"
47 #include "ImfExport.h"
48 #include "ImfForward.h"
49 
50 
51 OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
52 
53 
54 class IMF_EXPORT PizCompressor: public Compressor
55 {
56   public:
57 
58     PizCompressor (const Header &hdr,
59                    size_t maxScanLineSize,
60                    size_t numScanLines);
61 
62     virtual ~PizCompressor ();
63 
64     virtual int		numScanLines () const;
65 
66     virtual Format	format () const;
67 
68     virtual int		compress (const char *inPtr,
69 				  int inSize,
70 				  int minY,
71 				  const char *&outPtr);
72 
73     virtual int		compressTile (const char *inPtr,
74 				      int inSize,
75 				      IMATH_NAMESPACE::Box2i range,
76 				      const char *&outPtr);
77 
78     virtual int		uncompress (const char *inPtr,
79 				    int inSize,
80 				    int minY,
81 				    const char *&outPtr);
82 
83     virtual int		uncompressTile (const char *inPtr,
84 					int inSize,
85 					IMATH_NAMESPACE::Box2i range,
86 					const char *&outPtr);
87   private:
88 
89     struct ChannelData;
90 
91     int			compress (const char *inPtr,
92 				  int inSize,
93 				  IMATH_NAMESPACE::Box2i range,
94 				  const char *&outPtr);
95 
96     int			uncompress (const char *inPtr,
97 				    int inSize,
98 				    IMATH_NAMESPACE::Box2i range,
99 				    const char *&outPtr);
100 
101     int			_maxScanLineSize;
102     Format		_format;
103     int			_numScanLines;
104     unsigned short *	_tmpBuffer;
105     char *		_outBuffer;
106     int			_numChans;
107     const ChannelList &	_channels;
108     ChannelData *	_channelData;
109     int			_minX;
110     int			_maxX;
111     int			_maxY;
112 };
113 
114 
115 OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
116 
117 #endif
118