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148 lines
5.4 KiB
C
148 lines
5.4 KiB
C
/*
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* jaricom.c
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*
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* Developed 1997 by Guido Vollbeding.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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*
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* This file contains probability estimation tables for common use in
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* arithmetic entropy encoding and decoding routines.
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*
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* This data represents Table D.2 in the JPEG spec (ISO/IEC IS 10918-1
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* and CCITT Recommendation ITU-T T.81) and Table 24 in the JBIG spec
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* (ISO/IEC IS 11544 and CCITT Recommendation ITU-T T.82).
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*/
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#define JPEG_INTERNALS
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#include "jinclude.h"
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#include "jpeglib.h"
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/* The following #define specifies the packing of the four components
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* into the compact INT32 representation.
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* Note that this formula must match the actual arithmetic encoder
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* and decoder implementation. The implementation has to be changed
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* if this formula is changed.
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* The current organization is leaned on Markus Kuhn's JBIG
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* implementation (jbig_tab.c).
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*/
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#define V(a,b,c,d) (((INT32)a << 16) | ((INT32)c << 8) | ((INT32)d << 7) | b)
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const INT32 jaritab[113] = {
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/*
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* Index, Qe_Value, Next_Index_LPS, Next_Index_MPS, Switch_MPS
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*/
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/* 0 */ V( 0x5a1d, 1, 1, 1 ),
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/* 1 */ V( 0x2586, 14, 2, 0 ),
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/* 2 */ V( 0x1114, 16, 3, 0 ),
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/* 3 */ V( 0x080b, 18, 4, 0 ),
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/* 4 */ V( 0x03d8, 20, 5, 0 ),
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/* 5 */ V( 0x01da, 23, 6, 0 ),
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/* 6 */ V( 0x00e5, 25, 7, 0 ),
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/* 7 */ V( 0x006f, 28, 8, 0 ),
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/* 8 */ V( 0x0036, 30, 9, 0 ),
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/* 9 */ V( 0x001a, 33, 10, 0 ),
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/* 10 */ V( 0x000d, 35, 11, 0 ),
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/* 11 */ V( 0x0006, 9, 12, 0 ),
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/* 12 */ V( 0x0003, 10, 13, 0 ),
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/* 13 */ V( 0x0001, 12, 13, 0 ),
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/* 14 */ V( 0x5a7f, 15, 15, 1 ),
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/* 15 */ V( 0x3f25, 36, 16, 0 ),
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/* 16 */ V( 0x2cf2, 38, 17, 0 ),
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/* 17 */ V( 0x207c, 39, 18, 0 ),
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/* 18 */ V( 0x17b9, 40, 19, 0 ),
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/* 19 */ V( 0x1182, 42, 20, 0 ),
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/* 20 */ V( 0x0cef, 43, 21, 0 ),
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/* 21 */ V( 0x09a1, 45, 22, 0 ),
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/* 22 */ V( 0x072f, 46, 23, 0 ),
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/* 23 */ V( 0x055c, 48, 24, 0 ),
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/* 24 */ V( 0x0406, 49, 25, 0 ),
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/* 25 */ V( 0x0303, 51, 26, 0 ),
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/* 26 */ V( 0x0240, 52, 27, 0 ),
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/* 27 */ V( 0x01b1, 54, 28, 0 ),
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/* 28 */ V( 0x0144, 56, 29, 0 ),
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/* 29 */ V( 0x00f5, 57, 30, 0 ),
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/* 30 */ V( 0x00b7, 59, 31, 0 ),
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/* 31 */ V( 0x008a, 60, 32, 0 ),
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/* 32 */ V( 0x0068, 62, 33, 0 ),
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/* 33 */ V( 0x004e, 63, 34, 0 ),
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/* 34 */ V( 0x003b, 32, 35, 0 ),
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/* 35 */ V( 0x002c, 33, 9, 0 ),
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/* 36 */ V( 0x5ae1, 37, 37, 1 ),
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/* 37 */ V( 0x484c, 64, 38, 0 ),
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/* 38 */ V( 0x3a0d, 65, 39, 0 ),
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/* 39 */ V( 0x2ef1, 67, 40, 0 ),
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/* 40 */ V( 0x261f, 68, 41, 0 ),
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/* 41 */ V( 0x1f33, 69, 42, 0 ),
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/* 42 */ V( 0x19a8, 70, 43, 0 ),
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/* 43 */ V( 0x1518, 72, 44, 0 ),
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/* 44 */ V( 0x1177, 73, 45, 0 ),
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/* 45 */ V( 0x0e74, 74, 46, 0 ),
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/* 46 */ V( 0x0bfb, 75, 47, 0 ),
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/* 47 */ V( 0x09f8, 77, 48, 0 ),
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/* 48 */ V( 0x0861, 78, 49, 0 ),
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/* 49 */ V( 0x0706, 79, 50, 0 ),
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/* 50 */ V( 0x05cd, 48, 51, 0 ),
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/* 51 */ V( 0x04de, 50, 52, 0 ),
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/* 52 */ V( 0x040f, 50, 53, 0 ),
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/* 53 */ V( 0x0363, 51, 54, 0 ),
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/* 54 */ V( 0x02d4, 52, 55, 0 ),
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/* 55 */ V( 0x025c, 53, 56, 0 ),
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/* 56 */ V( 0x01f8, 54, 57, 0 ),
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/* 57 */ V( 0x01a4, 55, 58, 0 ),
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/* 58 */ V( 0x0160, 56, 59, 0 ),
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/* 59 */ V( 0x0125, 57, 60, 0 ),
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/* 60 */ V( 0x00f6, 58, 61, 0 ),
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/* 61 */ V( 0x00cb, 59, 62, 0 ),
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/* 62 */ V( 0x00ab, 61, 63, 0 ),
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/* 63 */ V( 0x008f, 61, 32, 0 ),
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/* 64 */ V( 0x5b12, 65, 65, 1 ),
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/* 65 */ V( 0x4d04, 80, 66, 0 ),
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/* 66 */ V( 0x412c, 81, 67, 0 ),
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/* 67 */ V( 0x37d8, 82, 68, 0 ),
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/* 68 */ V( 0x2fe8, 83, 69, 0 ),
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/* 69 */ V( 0x293c, 84, 70, 0 ),
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/* 70 */ V( 0x2379, 86, 71, 0 ),
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/* 71 */ V( 0x1edf, 87, 72, 0 ),
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/* 72 */ V( 0x1aa9, 87, 73, 0 ),
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/* 73 */ V( 0x174e, 72, 74, 0 ),
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/* 74 */ V( 0x1424, 72, 75, 0 ),
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/* 75 */ V( 0x119c, 74, 76, 0 ),
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/* 76 */ V( 0x0f6b, 74, 77, 0 ),
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/* 77 */ V( 0x0d51, 75, 78, 0 ),
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/* 78 */ V( 0x0bb6, 77, 79, 0 ),
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/* 79 */ V( 0x0a40, 77, 48, 0 ),
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/* 80 */ V( 0x5832, 80, 81, 1 ),
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/* 81 */ V( 0x4d1c, 88, 82, 0 ),
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/* 82 */ V( 0x438e, 89, 83, 0 ),
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/* 83 */ V( 0x3bdd, 90, 84, 0 ),
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/* 84 */ V( 0x34ee, 91, 85, 0 ),
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/* 85 */ V( 0x2eae, 92, 86, 0 ),
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/* 86 */ V( 0x299a, 93, 87, 0 ),
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/* 87 */ V( 0x2516, 86, 71, 0 ),
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/* 88 */ V( 0x5570, 88, 89, 1 ),
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/* 89 */ V( 0x4ca9, 95, 90, 0 ),
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/* 90 */ V( 0x44d9, 96, 91, 0 ),
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/* 91 */ V( 0x3e22, 97, 92, 0 ),
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/* 92 */ V( 0x3824, 99, 93, 0 ),
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/* 93 */ V( 0x32b4, 99, 94, 0 ),
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/* 94 */ V( 0x2e17, 93, 86, 0 ),
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/* 95 */ V( 0x56a8, 95, 96, 1 ),
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/* 96 */ V( 0x4f46, 101, 97, 0 ),
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/* 97 */ V( 0x47e5, 102, 98, 0 ),
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/* 98 */ V( 0x41cf, 103, 99, 0 ),
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/* 99 */ V( 0x3c3d, 104, 100, 0 ),
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/* 100 */ V( 0x375e, 99, 93, 0 ),
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/* 101 */ V( 0x5231, 105, 102, 0 ),
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/* 102 */ V( 0x4c0f, 106, 103, 0 ),
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/* 103 */ V( 0x4639, 107, 104, 0 ),
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/* 104 */ V( 0x415e, 103, 99, 0 ),
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/* 105 */ V( 0x5627, 105, 106, 1 ),
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/* 106 */ V( 0x50e7, 108, 107, 0 ),
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/* 107 */ V( 0x4b85, 109, 103, 0 ),
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/* 108 */ V( 0x5597, 110, 109, 0 ),
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/* 109 */ V( 0x504f, 111, 107, 0 ),
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/* 110 */ V( 0x5a10, 110, 111, 1 ),
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/* 111 */ V( 0x5522, 112, 109, 0 ),
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/* 112 */ V( 0x59eb, 112, 111, 1 )
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};
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