cabac.h File Reference

Headerfile for entropy coding routines. More...

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Functions
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	writeHeaderToBuffer (void)
void	writeMB_typeInfo_CABAC (SyntaxElement *se, DataPartition *dp)
void	writeIntraPredMode_CABAC (SyntaxElement *se, DataPartition *dp)
void	writeB8_typeInfo_CABAC (SyntaxElement *se, DataPartition *dp)
void	writeRefFrame_CABAC (SyntaxElement *se, DataPartition *dp)
void	writeMVD_CABAC (SyntaxElement *se, DataPartition *dp)
void	writeCBP_CABAC (Macroblock *currMB, SyntaxElement *se, DataPartition *dp)
void	writeDquant_CABAC (SyntaxElement *se, DataPartition *dp)
void	writeRunLevel_CABAC (Macroblock *currMB, SyntaxElement *se, DataPartition *dp)
void	writeCIPredMode_CABAC (SyntaxElement *se, DataPartition *dp)
void	print_ctx_TextureInfo (TextureInfoContexts *enco_ctx)
void	writeMB_skip_flagInfo_CABAC (Macroblock *currMB, SyntaxElement *se, DataPartition *dp)
void	writeFieldModeInfo_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	cabac_new_slice (void)
void	CheckAvailabilityOfNeighborsCABAC (Macroblock *currMB)
void	writeMB_transform_size_CABAC (SyntaxElement *se, DataPartition *dp)
Variables
const byte	maxpos []
const byte	c1isdc []
const byte	type2ctx_bcbp []
const byte	type2ctx_map []
const byte	type2ctx_last []
const byte	type2ctx_one []
const byte	type2ctx_abs []
const byte	max_c2 []
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

Headerfile for entropy coding routines.

cabac.h

Author:

Detlev Marpe
Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.

Date:

21. Oct 2000 (Changes by Tobias Oelbaum 28.08.2001)

Definition in file cabac.h.

---

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 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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