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34 
35 
36 
37 #ifndef INCLUDED_IMF_COMPRESSION_H
38 #define INCLUDED_IMF_COMPRESSION_H
39 
40 //-----------------------------------------------------------------------------
41 //
42 //	enum Compression
43 //
44 //-----------------------------------------------------------------------------
45 
46 namespace Imf {
47 
48 
49 enum Compression
50 {
51     NO_COMPRESSION  = 0,	// no compression
52 
53     RLE_COMPRESSION = 1,	// run length encoding
54 
55     ZIPS_COMPRESSION = 2,	// zlib compression, one scan line at a time
56 
57     ZIP_COMPRESSION = 3,	// zlib compression, in blocks of 16 scan lines
58 
59     PIZ_COMPRESSION = 4,	// piz-based wavelet compression
60 
61     PXR24_COMPRESSION = 5,	// lossy 24-bit float compression
62 
63     B44_COMPRESSION = 6,	// lossy 4-by-4 pixel block compression,
64                     // fixed compression rate
65 
66     B44A_COMPRESSION = 7,	// lossy 4-by-4 pixel block compression,
67                     // flat fields are compressed more
68 
69     NUM_COMPRESSION_METHODS	// number of different compression methods
70 };
71 
72 
73 } // namespace Imf
74 
75 #endif
76