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158 lines
5.8 KiB
C
158 lines
5.8 KiB
C
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/*!
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***************************************************************************
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* \file
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* biaridecod.h
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*
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* \brief
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* Headerfile for binary arithmetic decoder routines
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*
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* \author
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* Detlev Marpe,
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* Gabi Bl<EFBFBD>ttermann
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* Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
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*
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* \date
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* 21. Oct 2000
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**************************************************************************
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*/
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#ifndef _BIARIDECOD_H_
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#define _BIARIDECOD_H_
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/************************************************************************
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* D e f i n i t i o n s
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***********************************************************************
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*/
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/* Range table for LPS */
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/*
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static const byte rLPS_table_64x4[64][4]=
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{
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{ 128, 176, 208, 240},
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{ 128, 167, 197, 227},
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{ 128, 158, 187, 216},
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{ 123, 150, 178, 205},
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{ 116, 142, 169, 195},
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{ 111, 135, 160, 185},
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{ 105, 128, 152, 175},
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{ 100, 122, 144, 166},
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{ 95, 116, 137, 158},
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{ 90, 110, 130, 150},
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{ 85, 104, 123, 142},
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{ 81, 99, 117, 135},
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{ 77, 94, 111, 128},
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{ 73, 89, 105, 122},
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{ 69, 85, 100, 116},
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{ 66, 80, 95, 110},
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{ 62, 76, 90, 104},
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{ 59, 72, 86, 99},
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{ 56, 69, 81, 94},
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{ 53, 65, 77, 89},
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{ 51, 62, 73, 85},
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{ 48, 59, 69, 80},
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{ 46, 56, 66, 76},
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{ 43, 53, 63, 72},
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{ 41, 50, 59, 69},
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{ 39, 48, 56, 65},
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{ 37, 45, 54, 62},
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{ 35, 43, 51, 59},
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{ 33, 41, 48, 56},
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{ 32, 39, 46, 53},
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{ 30, 37, 43, 50},
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{ 29, 35, 41, 48},
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{ 27, 33, 39, 45},
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{ 26, 31, 37, 43},
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{ 24, 30, 35, 41},
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{ 23, 28, 33, 39},
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{ 22, 27, 32, 37},
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{ 21, 26, 30, 35},
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{ 20, 24, 29, 33},
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{ 19, 23, 27, 31},
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{ 18, 22, 26, 30},
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{ 17, 21, 25, 28},
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{ 16, 20, 23, 27},
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{ 15, 19, 22, 25},
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{ 14, 18, 21, 24},
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{ 14, 17, 20, 23},
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{ 13, 16, 19, 22},
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{ 12, 15, 18, 21},
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{ 12, 14, 17, 20},
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{ 11, 14, 16, 19},
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{ 11, 13, 15, 18},
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{ 10, 12, 15, 17},
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{ 10, 12, 14, 16},
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{ 9, 11, 13, 15},
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{ 9, 11, 12, 14},
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{ 8, 10, 12, 14},
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{ 8, 9, 11, 13},
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{ 7, 9, 11, 12},
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{ 7, 9, 10, 12},
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{ 7, 8, 10, 11},
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{ 6, 8, 9, 11},
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{ 6, 7, 9, 10},
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{ 6, 7, 8, 9},
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{ 2, 2, 2, 2}
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};*/
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static const byte rLPS_table_64x4[4][64]={
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{128, 128, 128, 123, 116, 111, 105, 100, 95, 90, 85, 81, 77, 73, 69, 66,
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62, 59, 56, 53, 51, 48, 46, 43, 41, 39, 37, 35, 33, 32, 30, 29,
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27, 26, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 14, 13, 12,
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12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 2,
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},
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{176, 167, 158, 150, 142, 135, 128, 122, 116, 110, 104, 99, 94, 89, 85, 80,
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76, 72, 69, 65, 62, 59, 56, 53, 50, 48, 45, 43, 41, 39, 37, 35,
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33, 31, 30, 28, 27, 26, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15,
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14, 14, 13, 12, 12, 11, 11, 10, 9, 9, 9, 8, 8, 7, 7, 2,
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},
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{208, 197, 187, 178, 169, 160, 152, 144, 137, 130, 123, 117, 111, 105, 100, 95,
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90, 86, 81, 77, 73, 69, 66, 63, 59, 56, 54, 51, 48, 46, 43, 41,
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39, 37, 35, 33, 32, 30, 29, 27, 26, 25, 23, 22, 21, 20, 19, 18,
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17, 16, 15, 15, 14, 13, 12, 12, 11, 11, 10, 10, 9, 9, 8, 2,
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},
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{240, 227, 216, 205, 195, 185, 175, 166, 158, 150, 142, 135, 128, 122, 116, 110,
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104, 99, 94, 89, 85, 80, 76, 72, 69, 65, 62, 59, 56, 53, 50, 48,
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45, 43, 41, 39, 37, 35, 33, 31, 30, 28, 27, 25, 24, 23, 22, 21,
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20, 19, 18, 17, 16, 15, 14, 14, 13, 12, 12, 11, 11, 10, 9, 2,
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}};
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// make uint16 to match biari_decode_symbol
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static const byte AC_next_state_MPS_64[64] =
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{
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1,2,3,4,5,6,7,8,9,10,
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11,12,13,14,15,16,17,18,19,20,
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21,22,23,24,25,26,27,28,29,30,
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31,32,33,34,35,36,37,38,39,40,
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41,42,43,44,45,46,47,48,49,50,
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51,52,53,54,55,56,57,58,59,60,
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61,62,62,63
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};
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// make uint16 to match biari_decode_symbol
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static const byte AC_next_state_LPS_64[64] =
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{
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0, 0, 1, 2, 2, 4, 4, 5, 6, 7,
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8, 9, 9,11,11,12,13,13,15,15,
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16,16,18,18,19,19,21,21,22,22,
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23,24,24,25,26,26,27,27,28,29,
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29,30,30,30,31,32,32,33,33,33,
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34,34,35,35,35,36,36,36,37,37,
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37,38,38,63
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};
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static const byte renorm_table_32[32]={6,5,4,4,3,3,3,3,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
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static const byte renorm_table_256[256]={6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, };
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extern void arideco_start_decoding(DecodingEnvironmentPtr eep, unsigned char *code_buffer, int firstbyte, int *code_len);
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//extern int arideco_bits_read(const DecodingEnvironmentPtr dep);
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extern void arideco_done_decoding(DecodingEnvironmentPtr dep);
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extern void biari_init_context (int qp, BiContextTypePtr ctx, const char* ini);
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extern unsigned int biari_decode_symbol(DecodingEnvironmentPtr dep, BiContextTypePtr bi_ct );
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extern unsigned int biari_decode_symbol_eq_prob(DecodingEnvironmentPtr dep);
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extern unsigned int biari_decode_final(DecodingEnvironmentPtr dep);
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extern unsigned int getbyte(DecodingEnvironmentPtr dep);
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extern unsigned int getword(DecodingEnvironmentPtr dep);
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#endif // BIARIDECOD_H_
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