H.264/AVC Reference Software Encoder: cabac.h Source File

00001 
00002 /*!
00003  ***************************************************************************
00004  * \file
00005  *    cabac.h
00006  *
00007  * \brief
00008  *    Headerfile for entropy coding routines
00009  *
00010  * \author
00011  *    Detlev Marpe                                                         \n
00012  *    Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
00013  *
00014  * \date
00015  *    21. Oct 2000 (Changes by Tobias Oelbaum 28.08.2001)
00016  ***************************************************************************
00017  */
00018 
00019 
00020 #ifndef _CABAC_H_
00021 #define _CABAC_H_
00022 
00023 static const byte maxpos       [] = {15, 14, 63, 31, 31, 15,  3, 14,  7, 15, 15, 14, 63, 31, 31, 15, 15, 14, 63, 31, 31, 15};
00024 static const byte c1isdc       [] = { 1,  0,  1,  1,  1,  1,  1,  0,  1,  1,  1,  0,  1,  1,  1,  1,  1,  0,  1,  1,  1,  1};
00025 
00026 static const byte type2ctx_bcbp[] = { 0,  1,  2,  3,  3,  4,  5,  6,  5,  5, 10, 11, 12, 13, 13, 14, 16, 17, 18, 19, 19, 20};
00027 static const byte type2ctx_map [] = { 0,  1,  2,  3,  4,  5,  6,  7,  6,  6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21}; // 8
00028 static const byte type2ctx_last[] = { 0,  1,  2,  3,  4,  5,  6,  7,  6,  6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21}; // 8
00029 static const byte type2ctx_one [] = { 0,  1,  2,  3,  3,  4,  5,  6,  5,  5, 10, 11, 12, 13, 13, 14, 16, 17, 18, 19, 19, 20}; // 7
00030 static const byte type2ctx_abs [] = { 0,  1,  2,  3,  3,  4,  5,  6,  5,  5, 10, 11, 12, 13, 13, 14, 16, 17, 18, 19, 19, 20}; // 7
00031 static const byte max_c2       [] = { 4,  4,  4,  4,  4,  4,  3,  4,  3,  3,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4}; // 9
00032 
00033 
00034 extern const byte* pos2ctx_map     [];
00035 extern const byte* pos2ctx_map_int [];
00036 extern const byte* pos2ctx_last    [];
00037 
00038 // CABAC
00039 extern MotionInfoContexts* create_contexts_MotionInfo  (void);
00040 extern TextureInfoContexts* create_contexts_TextureInfo(void);
00041 
00042 extern void delete_contexts_MotionInfo  (MotionInfoContexts *enco_ctx);
00043 extern void delete_contexts_TextureInfo (TextureInfoContexts *enco_ctx);
00044 extern void writeMB_I_typeInfo_CABAC    (Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00045 extern void writeMB_B_typeInfo_CABAC    (Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00046 extern void writeMB_P_typeInfo_CABAC    (Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00047 extern void writeIntraPredMode_CABAC  (SyntaxElement *se, DataPartition *dp);
00048 extern void writeB8_typeInfo_CABAC    (SyntaxElement *se, DataPartition *dp);
00049 extern void writeB8_B_typeInfo_CABAC  (SyntaxElement *se, DataPartition *dp);
00050 
00051 extern void writeRefPic_B_CABAC       (SyntaxElement *se, DataPartition *dp);
00052 extern void writeRefPic_P_CABAC       (SyntaxElement *se, DataPartition *dp);
00053 
00054 extern void writeMVD_CABAC             (Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00055 extern void writeCBP_CABAC             (Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00056 extern void writeDquant_CABAC          (Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00057 extern void writeRunLevel_CABAC        (Macroblock* currMB, SyntaxElement *se, DataPartition *dp);
00058 extern void writeCIPredMode_CABAC      (Macroblock* currMB, SyntaxElement *se, DataPartition *dp);
00059 extern void print_ctx_TextureInfo      (TextureInfoContexts *enco_ctx);
00060 extern void writeMB_Pskip_flagInfo_CABAC(Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00061 extern void writeMB_Bskip_flagInfo_CABAC(Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00062 extern void writeFieldModeInfo_CABAC   (Macroblock *currMB, SyntaxElement *se, DataPartition *dp); //GB
00063 extern void writeCBP_BIT_CABAC         (Macroblock *currMB, int b8, int bit, int cbp, EncodingEnvironmentPtr eep_dp, TextureInfoContexts *ctx);
00064 
00065 extern void CheckAvailabilityOfNeighborsCABAC (Macroblock* currMB);
00066 extern void writeMB_transform_size_CABAC(Macroblock *currMB, SyntaxElement *se, DataPartition *dp);
00067 
00068 extern void write_and_store_CBP_block_bit_444 (Macroblock* currMB, EncodingEnvironmentPtr eep_dp, int type, int cbp_bit, TextureInfoContexts*  tex_ctx);
00069 extern void write_and_store_CBP_block_bit     (Macroblock* currMB, EncodingEnvironmentPtr eep_dp, int type, int cbp_bit, TextureInfoContexts*  tex_ctx);
00070 
00071 
00072 #endif  // CABAC_H
00073