| |
| /*! |
| *************************************************************************** |
| * \file |
| * biariencode.h |
| * |
| * \brief |
| * Headerfile for binary arithmetic encoding routines |
| * |
| * \author |
| * Detlev Marpe, |
| * Gabi Blaettermann |
| * Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved. |
| * |
| * \date |
| * 21. Oct 2000 |
| ************************************************************************** |
| */ |
| |
| |
| #ifndef _BIARIENCOD_H_ |
| #define _BIARIENCOD_H_ |
| |
| |
| /************************************************************************ |
| * D e f i n i t i o n s |
| *********************************************************************** |
| */ |
| |
| // some definitions to increase the readability of the source code |
| |
| #define Elow (eep->Elow) |
| #define Erange (eep->Erange) |
| #define Ebits_to_follow (eep->Ebits_to_follow) |
| #define Ebuffer (eep->Ebuffer) |
| #define Ebits_to_go (eep->Ebits_to_go) |
| #define Ecodestrm (eep->Ecodestrm) |
| #define Ecodestrm_len (eep->Ecodestrm_len) |
| #define Ecodestrm_laststartcode (eep->Ecodestrm_laststartcode) |
| #define B_BITS 10 // Number of bits to represent the whole coding interval |
| #define ONE (1 << B_BITS) |
| #define HALF (1 << (B_BITS-1)) |
| #define QUARTER (1 << (B_BITS-2)) |
| |
| // Range table for LPS |
| 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} |
| }; |
| |
| const unsigned short 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 |
| }; |
| |
| const unsigned short 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 |
| }; |
| |
| |
| #endif // BIARIENCOD_H |
| |
