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