cabac.c File Reference

CABAC entropy coding routines. More...

#include "global.h"
#include "cabac.h"
#include "biariencode.h"
#include "image.h"
#include "mb_access.h"

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Functions

static void unary_bin_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx, int ctx_offset)

static void unary_bin_max_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx, int ctx_offset, unsigned int max_symbol)

static void unary_exp_golomb_level_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx)

static void unary_exp_golomb_mv_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx, unsigned int max_bin)

void CheckAvailabilityOfNeighborsCABAC (Macroblock *currMB)

MotionInfoContexts * create_contexts_MotionInfo (void)

TextureInfoContexts * create_contexts_TextureInfo (void)

void delete_contexts_MotionInfo (MotionInfoContexts *enco_ctx)

void delete_contexts_TextureInfo (TextureInfoContexts *enco_ctx)

void writeFieldModeInfo_CABAC (SyntaxElement *se, DataPartition *dp)

void writeMB_skip_flagInfo_CABAC (Macroblock *currMB, SyntaxElement *se, DataPartition *dp)

void writeMB_transform_size_CABAC (SyntaxElement *se, DataPartition *dp)

void writeMB_typeInfo_CABAC (SyntaxElement *se, DataPartition *dp)

void writeB8_typeInfo_CABAC (SyntaxElement *se, DataPartition *dp)

void writeIntraPredMode_CABAC (SyntaxElement *se, DataPartition *dp)

void writeRefFrame_CABAC (SyntaxElement *se, DataPartition *dp)

void writeDquant_CABAC (SyntaxElement *se, DataPartition *dp)

void writeMVD_CABAC (SyntaxElement *se, DataPartition *dp)

void writeCIPredMode_CABAC (SyntaxElement *se, DataPartition *dp)

void writeCBP_BIT_CABAC (Macroblock *currMB, int b8, int bit, int cbp, int inter, EncodingEnvironmentPtr eep_dp, TextureInfoContexts *ctx)

void writeCBP_CABAC (Macroblock *currMB, SyntaxElement *se, DataPartition *dp)

void write_and_store_CBP_block_bit (Macroblock *currMB, EncodingEnvironmentPtr eep_dp, int type, int cbp_bit, TextureInfoContexts *tex_ctx)

void write_significance_map (Macroblock *currMB, EncodingEnvironmentPtr eep_dp, int type, int coeff[], int coeff_ctr, TextureInfoContexts *tex_ctx)

void write_significant_coefficients (Macroblock *currMB, EncodingEnvironmentPtr eep_dp, int type, int coeff[], TextureInfoContexts *tex_ctx)

void writeRunLevel_CABAC (Macroblock *currMB, SyntaxElement *se, DataPartition *dp)

void exp_golomb_encode_eq_prob (EncodingEnvironmentPtr eep_dp, unsigned int symbol, int k)

Variables

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}

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}

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}

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}

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}

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}

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}

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}

const byte pos2ctx_map8x8 []

const byte pos2ctx_map8x4 []

const byte pos2ctx_map4x4 []

const byte pos2ctx_map2x4c []

const byte pos2ctx_map4x4c []

const byte * pos2ctx_map []

const byte pos2ctx_map8x8i []

const byte pos2ctx_map8x4i []

const byte pos2ctx_map4x8i []

const byte * pos2ctx_map_int []

const byte pos2ctx_last8x8 []

const byte pos2ctx_last8x4 []

const byte pos2ctx_last4x4 []

const byte pos2ctx_last2x4c []

const byte pos2ctx_last4x4c []

const byte * pos2ctx_last []

Detailed Description

CABAC entropy coding routines.

Author:

Main contributors (see contributors.h for copyright, address and affiliation details)

Detlev Marpe <marpe@hhi.de>

Definition in file cabac.c.

Function Documentation

void CheckAvailabilityOfNeighborsCABAC ( Macroblock * currMB )

Check for available neighbouring blocks and set pointers in current macroblock.

Definition at line 180 of file cabac.c.

References pix_pos::available, pix_pos::mb_addr, macroblock::mb_available_left, macroblock::mb_available_up, ImageParameters::mb_data, and ImageParameters::mb_size.

Referenced by start_macroblock(), and writeMBLayer().

MotionInfoContexts* create_contexts_MotionInfo ( void )

Allocation of contexts models for the motion info used for arithmetic encoding.

Definition at line 206 of file cabac.c.

References no_mem_exit().

Referenced by create_coding_state(), and malloc_slice().

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TextureInfoContexts* create_contexts_TextureInfo ( void )

Allocates of contexts models for the texture info used for arithmetic encoding.

Definition at line 225 of file cabac.c.

References no_mem_exit().

Referenced by create_coding_state(), and malloc_slice().

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void delete_contexts_MotionInfo ( MotionInfoContexts * enco_ctx )

Frees the memory of the contexts models used for arithmetic encoding of the motion info.

Definition at line 244 of file cabac.c.

Referenced by delete_coding_state(), and free_slice().

void delete_contexts_TextureInfo ( TextureInfoContexts * enco_ctx )

Frees the memory of the contexts models used for arithmetic encoding of the texture info.

Definition at line 259 of file cabac.c.

Referenced by delete_coding_state(), and free_slice().

void exp_golomb_encode_eq_prob	(	EncodingEnvironmentPtr	eep_dp,
		unsigned int	symbol,
		int	k
	)

Exp Golomb binarization and encoding.

Definition at line 1554 of file cabac.c.

References biari_encode_symbol_eq_prob().

Referenced by unary_exp_golomb_level_encode(), and unary_exp_golomb_mv_encode().

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static void unary_bin_encode	(	EncodingEnvironmentPtr	eep_frame,
		unsigned int	symbol,
		BiContextTypePtr	ctx,
		int	ctx_offset
	)			`[static]`

Unary binarization and encoding of a symbol by using one or two distinct models for the first two and all remaining bins.

Definition at line 1494 of file cabac.c.

References biari_encode_symbol().

Referenced by writeDquant_CABAC(), and writeRefFrame_CABAC().

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static void unary_bin_max_encode	(	EncodingEnvironmentPtr	eep_frame,
		unsigned int	symbol,
		BiContextTypePtr	ctx,
		int	ctx_offset,
		unsigned int	max_symbol
	)			`[static]`

Unary binarization and encoding of a symbol by using one or two distinct models for the first two and all remaining bins; no terminating "0" for max_symbol (finite symbol alphabet).

Definition at line 1523 of file cabac.c.

References biari_encode_symbol().

Referenced by writeCIPredMode_CABAC().

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static void unary_exp_golomb_level_encode	(	EncodingEnvironmentPtr	eep_dp,
		unsigned int	symbol,
		BiContextTypePtr	ctx
	)			`[static]`

Exp-Golomb for Level Encoding.

Definition at line 1582 of file cabac.c.

References biari_encode_symbol(), and exp_golomb_encode_eq_prob().

Referenced by write_significant_coefficients().

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static void unary_exp_golomb_mv_encode	(	EncodingEnvironmentPtr	eep_dp,
		unsigned int	symbol,
		BiContextTypePtr	ctx,
		unsigned int	max_bin
	)			`[static]`

Exp-Golomb for MV Encoding.

Definition at line 1613 of file cabac.c.

References biari_encode_symbol(), and exp_golomb_encode_eq_prob().

Referenced by writeMVD_CABAC().

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void write_and_store_CBP_block_bit	(	Macroblock *	currMB,
		EncodingEnvironmentPtr	eep_dp,
		int	type,
		int	cbp_bit,
		TextureInfoContexts *	tex_ctx
	)

Write CBP4-BIT.

Definition at line 1118 of file cabac.c.

References pix_pos::available, biari_encode_symbol(), macroblock::cbp_bits, macroblock::cbp_bits_8x8, storable_picture::chroma_format_idc, get4x4Neighbour(), ImageParameters::is_intra_block, ImageParameters::is_v_block, pix_pos::mb_addr, ImageParameters::mb_data, ImageParameters::mb_size, macroblock::mb_type, ImageParameters::subblock_x, ImageParameters::subblock_y, pix_pos::x, pix_pos::y, and YUV444.

Referenced by writeRunLevel_CABAC().

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void write_significance_map	(	Macroblock *	currMB,
		EncodingEnvironmentPtr	eep_dp,
		int	type,
		int	coeff[],
		int	coeff_ctr,
		TextureInfoContexts *	tex_ctx
	)

Write Significance MAP.

Definition at line 1343 of file cabac.c.

References biari_encode_symbol(), macroblock::mb_field, and ImageParameters::structure.

Referenced by writeRunLevel_CABAC().

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void write_significant_coefficients	(	Macroblock *	currMB,
		EncodingEnvironmentPtr	eep_dp,
		int	type,
		int	coeff[],
		TextureInfoContexts *	tex_ctx
	)

Write Levels.

Definition at line 1387 of file cabac.c.

References biari_encode_symbol(), biari_encode_symbol_eq_prob(), and unary_exp_golomb_level_encode().

Referenced by writeRunLevel_CABAC().

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void writeB8_typeInfo_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the 8x8 block type info.

Definition at line 621 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, ImageParameters::type, syntaxelement::value1, and Bitstream::write_flag.

Referenced by init_slice().

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void writeCBP_BIT_CABAC	(	Macroblock *	currMB,
		int	b8,
		int	bit,
		int	cbp,
		int	inter,
		EncodingEnvironmentPtr	eep_dp,
		TextureInfoContexts *	ctx
	)

This function is used to arithmetically encode the coded block pattern of an 8x8 block.

Definition at line 1006 of file cabac.c.

References pix_pos::available, biari_encode_symbol(), macroblock::cbp, get4x4Neighbour(), pix_pos::mb_addr, macroblock::mb_available_up, ImageParameters::mb_data, ImageParameters::mb_size, macroblock::mb_type, and pix_pos::y.

Referenced by RDCost_for_8x8blocks(), and writeCBP_CABAC().

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void writeCBP_CABAC	(	Macroblock *	currMB,
		SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the coded block pattern of a macroblock.

Definition at line 1048 of file cabac.c.

References arienco_bits_written(), macroblock::b8mode, biari_encode_symbol(), datapartition::bitstream, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, macroblock::mb_available_left, macroblock::mb_available_up, Slice::tex_ctx, syntaxelement::value1, Bitstream::write_flag, writeCBP_BIT_CABAC(), YUV400, YUV444, and ImageParameters::yuv_format.

Referenced by init_slice().

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void writeCIPredMode_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the chroma intra prediction mode of an 8x8 block.

Definition at line 969 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, macroblock::c_ipred_mode, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, macroblock::mb_available_left, macroblock::mb_available_up, ImageParameters::mb_data, macroblock::mb_type, Slice::tex_ctx, unary_bin_max_encode(), syntaxelement::value1, and Bitstream::write_flag.

Referenced by init_slice().

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void writeDquant_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the coded block pattern of a given delta quant.

Definition at line 839 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, ImageParameters::mb_data, Slice::mot_ctx, macroblock::prev_dqp, unary_bin_encode(), syntaxelement::value1, and Bitstream::write_flag.

Referenced by init_slice().

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void writeFieldModeInfo_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the field mode info of a given MB in the case of mb-based frame/field decision.

Definition at line 275 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, syntaxelement::context, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, ImageParameters::mb_data, macroblock::mb_field, macroblock::mbAddrA, macroblock::mbAddrB, macroblock::mbAvailA, macroblock::mbAvailB, syntaxelement::value1, and Bitstream::write_flag.

Referenced by init_slice().

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void writeIntraPredMode_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode a pair of intra prediction modes of a given MB.

Definition at line 722 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, syntaxelement::value1, and Bitstream::write_flag.

Referenced by init_slice().

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void writeMB_skip_flagInfo_CABAC	(	Macroblock *	currMB,
		SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the mb_skip_flag.

Definition at line 304 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, syntaxelement::context, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, macroblock::mb_available_left, macroblock::mb_available_up, macroblock::skip_flag, ImageParameters::type, syntaxelement::value1, syntaxelement::value2, and Bitstream::write_flag.

Referenced by writeMBLayer().

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void writeMB_transform_size_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the macroblock intra_pred_size flag info of a given MB.

Definition at line 350 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), datapartition::bitstream, syntaxelement::context, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, macroblock::luma_transform_size_8x8_flag, macroblock::mb_available_left, macroblock::mb_available_up, ImageParameters::mb_data, and Bitstream::write_flag.

Referenced by init_slice().

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void writeMB_typeInfo_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the macroblock type info of a given MB.

Definition at line 380 of file cabac.c.

References arienco_bits_written(), biari_encode_symbol(), biari_encode_symbol_final(), datapartition::bitstream, syntaxelement::context, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, macroblock::mb_available_left, macroblock::mb_available_up, ImageParameters::mb_data, macroblock::mb_type, ImageParameters::type, syntaxelement::value1, and Bitstream::write_flag.

Referenced by init_slice().

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void writeMVD_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the motion vector data of a B-frame MB.

Definition at line 876 of file cabac.c.

References arienco_bits_written(), pix_pos::available, biari_encode_symbol(), biari_encode_symbol_eq_prob(), datapartition::bitstream, syntaxelement::context, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, get4x4Neighbour(), syntaxelement::len, pix_pos::mb_addr, ImageParameters::mb_data, macroblock::mb_field, ImageParameters::mb_size, ImageParameters::MbaffFrameFlag, Slice::mot_ctx, macroblock::mvd, ImageParameters::subblock_x, ImageParameters::subblock_y, unary_exp_golomb_mv_encode(), syntaxelement::value1, syntaxelement::value2, Bitstream::write_flag, pix_pos::x, and pix_pos::y.

Referenced by init_slice().

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void writeRefFrame_CABAC	(	SyntaxElement *	se,
		DataPartition *	dp
	)

This function is used to arithmetically encode the reference parameter of a given MB.

Definition at line 753 of file cabac.c.

References arienco_bits_written(), pix_pos::available, macroblock::b8mode, biari_encode_symbol(), datapartition::bitstream, syntaxelement::context, ImageParameters::current_mb_nr, ImageParameters::currentSlice, datapartition::ee_cabac, get4x4Neighbour(), syntaxelement::len, pix_pos::mb_addr, ImageParameters::mb_data, macroblock::mb_field, ImageParameters::mb_size, ImageParameters::MbaffFrameFlag, Slice::mot_ctx, storable_picture::motion, pix_pos::pos_x, pix_pos::pos_y, pic_motion_params::ref_idx, ImageParameters::subblock_x, ImageParameters::subblock_y, ImageParameters::type, unary_bin_encode(), syntaxelement::value1, syntaxelement::value2, Bitstream::write_flag, pix_pos::x, and pix_pos::y.

Referenced by init_slice().

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void writeRunLevel_CABAC	(	Macroblock *	currMB,
		SyntaxElement *	se,
		DataPartition *	dp
	)

Write Block-Transform Coefficients.

Definition at line 1443 of file cabac.c.

References arienco_bits_written(), datapartition::bitstream, syntaxelement::context, ImageParameters::currentSlice, datapartition::ee_cabac, syntaxelement::len, Slice::tex_ctx, syntaxelement::value1, syntaxelement::value2, write_and_store_CBP_block_bit(), Bitstream::write_flag, write_significance_map(), and write_significant_coefficients().

Referenced by writeChromaCoeff(), writeCoeff16x16(), writeCoeff4x4_CABAC(), and writeCoeff8x8_CABAC().

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Variable Documentation

const byte* pos2ctx_last[]

Initial value:

 {
  pos2ctx_last4x4, pos2ctx_last4x4, pos2ctx_last8x8, pos2ctx_last8x4,
  pos2ctx_last8x4, pos2ctx_last4x4, pos2ctx_last4x4, pos2ctx_last4x4,
  pos2ctx_last2x4c, pos2ctx_last4x4c,
  pos2ctx_last4x4, pos2ctx_last4x4, pos2ctx_last8x8,pos2ctx_last8x4,
  pos2ctx_last8x4, pos2ctx_last4x4,  
  pos2ctx_last4x4, pos2ctx_last4x4, pos2ctx_last8x8,pos2ctx_last8x4,
  pos2ctx_last8x4, pos2ctx_last4x4 
}

Definition at line 135 of file cabac.c.

const byte pos2ctx_last2x4c[]

Initial value:

 {
  0,  0,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2
}

Definition at line 127 of file cabac.c.

const byte pos2ctx_last4x4[]

Initial value:

 {
  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15
}

Definition at line 123 of file cabac.c.

const byte pos2ctx_last4x4c[]

Initial value:

 { 
  0,  0,  0,  0,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2
}

Definition at line 131 of file cabac.c.

const byte pos2ctx_last8x4[]

Initial value:

 {
  0,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2,
  3,  3,  3,  3,  4,  4,  4,  4,  5,  5,  6,  6,  7,  7,  8,  8
}

Definition at line 118 of file cabac.c.

const byte pos2ctx_last8x8[]

Initial value:

 {
  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
  3,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,  4,  4,
  5,  5,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8
}

Definition at line 111 of file cabac.c.

const byte* pos2ctx_map[]

Initial value:

 {
  pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map8x8, pos2ctx_map8x4,
  pos2ctx_map8x4, pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map4x4,
  pos2ctx_map2x4c, pos2ctx_map4x4c, 
  pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map8x8,pos2ctx_map8x4,
  pos2ctx_map8x4, pos2ctx_map4x4,  
  pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map8x8,pos2ctx_map8x4,
  pos2ctx_map8x4,pos2ctx_map4x4  
}

Definition at line 69 of file cabac.c.

const byte pos2ctx_map2x4c[]

Initial value:

 {
  0,  0,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2
}

Definition at line 61 of file cabac.c.

const byte pos2ctx_map4x4[]

Initial value:

 {
  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 14
}

Definition at line 57 of file cabac.c.

const byte pos2ctx_map4x4c[]

Initial value:

 {
  0,  0,  0,  0,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2
}

Definition at line 65 of file cabac.c.

const byte pos2ctx_map4x8i[]

Initial value:

 {
  0,  1,  1,  1,  2,  3,  3,  4,  4,  4,  5,  6,  2,  7,  7,  8,
  8,  8,  5,  6,  9, 10, 10, 11, 11, 11, 12, 13, 13, 14, 14, 14
}

Definition at line 93 of file cabac.c.

const byte pos2ctx_map8x4[]

Initial value:

 {
  0,  1,  2,  3,  4,  5,  7,  8,  9, 10, 11,  9,  8,  6,  7,  8,
  9, 10, 11,  9,  8,  6, 12,  8,  9, 10, 11,  9, 13, 13, 14, 14
}

Definition at line 52 of file cabac.c.

const byte pos2ctx_map8x4i[]

Initial value:

 { 
  0,  1,  2,  3,  4,  5,  6,  3,  4,  5,  6,  3,  4,  7,  6,  8,
  9,  7,  6,  8,  9, 10, 11, 12, 12, 10, 11, 13, 13, 14, 14, 14
}

Definition at line 88 of file cabac.c.

const byte pos2ctx_map8x8[]

Initial value:

 {
  0,  1,  2,  3,  4,  5,  5,  4,  4,  3,  3,  4,  4,  4,  5,  5,
  4,  4,  4,  4,  3,  3,  6,  7,  7,  7,  8,  9, 10,  9,  8,  7,
  7,  6, 11, 12, 13, 11,  6,  7,  8,  9, 14, 10,  9,  8,  6, 11,
  12, 13, 11,  6,  9, 14, 10,  9, 11, 12, 13, 11 ,14, 10, 12, 14
}

Definition at line 45 of file cabac.c.

const byte pos2ctx_map8x8i[]

Initial value:

 {
  0,  1,  1,  2,  2,  3,  3,  4,  5,  6,  7,  7,  7,  8,  4,  5,
  6,  9, 10, 10,  8, 11, 12, 11,  9,  9, 10, 10,  8, 11, 12, 11,
  9,  9, 10, 10,  8, 11, 12, 11,  9,  9, 10, 10,  8, 13, 13,  9,
  9, 10, 10,  8, 13, 13,  9,  9, 10, 10, 14, 14, 14, 14, 14, 14
}

Definition at line 81 of file cabac.c.

const byte* pos2ctx_map_int[]

Initial value:

 {
  pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map8x8i,pos2ctx_map8x4i,
  pos2ctx_map4x8i,pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map4x4,
  pos2ctx_map2x4c, pos2ctx_map4x4c,
  
  pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map8x8i,pos2ctx_map8x4i,
  pos2ctx_map8x4i,pos2ctx_map4x4, 
  pos2ctx_map4x4, pos2ctx_map4x4, pos2ctx_map8x8i,pos2ctx_map8x4i,
  pos2ctx_map8x4i,pos2ctx_map4x4  
}

Definition at line 98 of file cabac.c.


Functions
static void	unary_bin_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx, int ctx_offset)
static void	unary_bin_max_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx, int ctx_offset, unsigned int max_symbol)
static void	unary_exp_golomb_level_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx)
static void	unary_exp_golomb_mv_encode (EncodingEnvironmentPtr eep_dp, unsigned int symbol, BiContextTypePtr ctx, unsigned int max_bin)
void	CheckAvailabilityOfNeighborsCABAC (Macroblock *currMB)
MotionInfoContexts *	create_contexts_MotionInfo (void)
TextureInfoContexts *	create_contexts_TextureInfo (void)
void	delete_contexts_MotionInfo (MotionInfoContexts *enco_ctx)
void	delete_contexts_TextureInfo (TextureInfoContexts *enco_ctx)
void	writeFieldModeInfo_CABAC (SyntaxElement se, DataPartition dp)
void	writeMB_skip_flagInfo_CABAC (Macroblock currMB, SyntaxElement se, DataPartition *dp)
void	writeMB_transform_size_CABAC (SyntaxElement se, DataPartition dp)
void	writeMB_typeInfo_CABAC (SyntaxElement se, DataPartition dp)
void	writeB8_typeInfo_CABAC (SyntaxElement se, DataPartition dp)
void	writeIntraPredMode_CABAC (SyntaxElement se, DataPartition dp)
void	writeRefFrame_CABAC (SyntaxElement se, DataPartition dp)
void	writeDquant_CABAC (SyntaxElement se, DataPartition dp)
void	writeMVD_CABAC (SyntaxElement se, DataPartition dp)
void	writeCIPredMode_CABAC (SyntaxElement se, DataPartition dp)
void	writeCBP_BIT_CABAC (Macroblock currMB, int b8, int bit, int cbp, int inter, EncodingEnvironmentPtr eep_dp, TextureInfoContexts ctx)
void	writeCBP_CABAC (Macroblock currMB, SyntaxElement se, DataPartition *dp)
void	write_and_store_CBP_block_bit (Macroblock currMB, EncodingEnvironmentPtr eep_dp, int type, int cbp_bit, TextureInfoContexts tex_ctx)
void	write_significance_map (Macroblock currMB, EncodingEnvironmentPtr eep_dp, int type, int coeff[], int coeff_ctr, TextureInfoContexts tex_ctx)
void	write_significant_coefficients (Macroblock currMB, EncodingEnvironmentPtr eep_dp, int type, int coeff[], TextureInfoContexts tex_ctx)
void	writeRunLevel_CABAC (Macroblock currMB, SyntaxElement se, DataPartition *dp)
void	exp_golomb_encode_eq_prob (EncodingEnvironmentPtr eep_dp, unsigned int symbol, int k)
Variables
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}
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}
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}
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}
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}
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}
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}
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}
const byte	pos2ctx_map8x8 []
const byte	pos2ctx_map8x4 []
const byte	pos2ctx_map4x4 []
const byte	pos2ctx_map2x4c []
const byte	pos2ctx_map4x4c []
const byte *	pos2ctx_map []
const byte	pos2ctx_map8x8i []
const byte	pos2ctx_map8x4i []
const byte	pos2ctx_map4x8i []
const byte *	pos2ctx_map_int []
const byte	pos2ctx_last8x8 []
const byte	pos2ctx_last8x4 []
const byte	pos2ctx_last4x4 []
const byte	pos2ctx_last2x4c []
const byte	pos2ctx_last4x4c []
const byte *	pos2ctx_last []