mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-18 18:05:52 +01:00
158 lines
5.8 KiB
C
158 lines
5.8 KiB
C
|
|
/*!
|
|
***************************************************************************
|
|
* \file
|
|
* biaridecod.h
|
|
*
|
|
* \brief
|
|
* Headerfile for binary arithmetic decoder routines
|
|
*
|
|
* \author
|
|
* Detlev Marpe,
|
|
* Gabi Blättermann
|
|
* Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
|
|
*
|
|
* \date
|
|
* 21. Oct 2000
|
|
**************************************************************************
|
|
*/
|
|
|
|
#ifndef _BIARIDECOD_H_
|
|
#define _BIARIDECOD_H_
|
|
|
|
|
|
/************************************************************************
|
|
* D e f i n i t i o n s
|
|
***********************************************************************
|
|
*/
|
|
|
|
/* Range table for LPS */
|
|
/*
|
|
static const byte rLPS_table_64x4[64][4]=
|
|
{
|
|
{ 128, 176, 208, 240},
|
|
{ 128, 167, 197, 227},
|
|
{ 128, 158, 187, 216},
|
|
{ 123, 150, 178, 205},
|
|
{ 116, 142, 169, 195},
|
|
{ 111, 135, 160, 185},
|
|
{ 105, 128, 152, 175},
|
|
{ 100, 122, 144, 166},
|
|
{ 95, 116, 137, 158},
|
|
{ 90, 110, 130, 150},
|
|
{ 85, 104, 123, 142},
|
|
{ 81, 99, 117, 135},
|
|
{ 77, 94, 111, 128},
|
|
{ 73, 89, 105, 122},
|
|
{ 69, 85, 100, 116},
|
|
{ 66, 80, 95, 110},
|
|
{ 62, 76, 90, 104},
|
|
{ 59, 72, 86, 99},
|
|
{ 56, 69, 81, 94},
|
|
{ 53, 65, 77, 89},
|
|
{ 51, 62, 73, 85},
|
|
{ 48, 59, 69, 80},
|
|
{ 46, 56, 66, 76},
|
|
{ 43, 53, 63, 72},
|
|
{ 41, 50, 59, 69},
|
|
{ 39, 48, 56, 65},
|
|
{ 37, 45, 54, 62},
|
|
{ 35, 43, 51, 59},
|
|
{ 33, 41, 48, 56},
|
|
{ 32, 39, 46, 53},
|
|
{ 30, 37, 43, 50},
|
|
{ 29, 35, 41, 48},
|
|
{ 27, 33, 39, 45},
|
|
{ 26, 31, 37, 43},
|
|
{ 24, 30, 35, 41},
|
|
{ 23, 28, 33, 39},
|
|
{ 22, 27, 32, 37},
|
|
{ 21, 26, 30, 35},
|
|
{ 20, 24, 29, 33},
|
|
{ 19, 23, 27, 31},
|
|
{ 18, 22, 26, 30},
|
|
{ 17, 21, 25, 28},
|
|
{ 16, 20, 23, 27},
|
|
{ 15, 19, 22, 25},
|
|
{ 14, 18, 21, 24},
|
|
{ 14, 17, 20, 23},
|
|
{ 13, 16, 19, 22},
|
|
{ 12, 15, 18, 21},
|
|
{ 12, 14, 17, 20},
|
|
{ 11, 14, 16, 19},
|
|
{ 11, 13, 15, 18},
|
|
{ 10, 12, 15, 17},
|
|
{ 10, 12, 14, 16},
|
|
{ 9, 11, 13, 15},
|
|
{ 9, 11, 12, 14},
|
|
{ 8, 10, 12, 14},
|
|
{ 8, 9, 11, 13},
|
|
{ 7, 9, 11, 12},
|
|
{ 7, 9, 10, 12},
|
|
{ 7, 8, 10, 11},
|
|
{ 6, 8, 9, 11},
|
|
{ 6, 7, 9, 10},
|
|
{ 6, 7, 8, 9},
|
|
{ 2, 2, 2, 2}
|
|
};*/
|
|
static const byte rLPS_table_64x4[4][64]={
|
|
{128, 128, 128, 123, 116, 111, 105, 100, 95, 90, 85, 81, 77, 73, 69, 66,
|
|
62, 59, 56, 53, 51, 48, 46, 43, 41, 39, 37, 35, 33, 32, 30, 29,
|
|
27, 26, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 14, 13, 12,
|
|
12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 2,
|
|
},
|
|
{176, 167, 158, 150, 142, 135, 128, 122, 116, 110, 104, 99, 94, 89, 85, 80,
|
|
76, 72, 69, 65, 62, 59, 56, 53, 50, 48, 45, 43, 41, 39, 37, 35,
|
|
33, 31, 30, 28, 27, 26, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15,
|
|
14, 14, 13, 12, 12, 11, 11, 10, 9, 9, 9, 8, 8, 7, 7, 2,
|
|
},
|
|
{208, 197, 187, 178, 169, 160, 152, 144, 137, 130, 123, 117, 111, 105, 100, 95,
|
|
90, 86, 81, 77, 73, 69, 66, 63, 59, 56, 54, 51, 48, 46, 43, 41,
|
|
39, 37, 35, 33, 32, 30, 29, 27, 26, 25, 23, 22, 21, 20, 19, 18,
|
|
17, 16, 15, 15, 14, 13, 12, 12, 11, 11, 10, 10, 9, 9, 8, 2,
|
|
},
|
|
{240, 227, 216, 205, 195, 185, 175, 166, 158, 150, 142, 135, 128, 122, 116, 110,
|
|
104, 99, 94, 89, 85, 80, 76, 72, 69, 65, 62, 59, 56, 53, 50, 48,
|
|
45, 43, 41, 39, 37, 35, 33, 31, 30, 28, 27, 25, 24, 23, 22, 21,
|
|
20, 19, 18, 17, 16, 15, 14, 14, 13, 12, 12, 11, 11, 10, 9, 2,
|
|
}};
|
|
|
|
// make uint16 to match biari_decode_symbol
|
|
static const byte AC_next_state_MPS_64[64] =
|
|
{
|
|
1,2,3,4,5,6,7,8,9,10,
|
|
11,12,13,14,15,16,17,18,19,20,
|
|
21,22,23,24,25,26,27,28,29,30,
|
|
31,32,33,34,35,36,37,38,39,40,
|
|
41,42,43,44,45,46,47,48,49,50,
|
|
51,52,53,54,55,56,57,58,59,60,
|
|
61,62,62,63
|
|
};
|
|
|
|
// make uint16 to match biari_decode_symbol
|
|
static const byte AC_next_state_LPS_64[64] =
|
|
{
|
|
0, 0, 1, 2, 2, 4, 4, 5, 6, 7,
|
|
8, 9, 9,11,11,12,13,13,15,15,
|
|
16,16,18,18,19,19,21,21,22,22,
|
|
23,24,24,25,26,26,27,27,28,29,
|
|
29,30,30,30,31,32,32,33,33,33,
|
|
34,34,35,35,35,36,36,36,37,37,
|
|
37,38,38,63
|
|
};
|
|
|
|
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};
|
|
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, };
|
|
|
|
extern void arideco_start_decoding(DecodingEnvironmentPtr eep, unsigned char *code_buffer, int firstbyte, int *code_len);
|
|
//extern int arideco_bits_read(const DecodingEnvironmentPtr dep);
|
|
extern void arideco_done_decoding(DecodingEnvironmentPtr dep);
|
|
extern void biari_init_context (int qp, BiContextTypePtr ctx, const char* ini);
|
|
extern unsigned int biari_decode_symbol(DecodingEnvironmentPtr dep, BiContextTypePtr bi_ct );
|
|
extern unsigned int biari_decode_symbol_eq_prob(DecodingEnvironmentPtr dep);
|
|
extern unsigned int biari_decode_final(DecodingEnvironmentPtr dep);
|
|
extern unsigned int getbyte(DecodingEnvironmentPtr dep);
|
|
extern unsigned int getword(DecodingEnvironmentPtr dep);
|
|
#endif // BIARIDECOD_H_
|
|
|