cabac.h File Reference

Context Adaptive Binary Arithmetic Coder. More...

#include <stdint.h>
#include "put_bits.h"

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Data Structures
struct	CABACContext

Macros
#define	H264_NORM_SHIFT_OFFSET   0
#define	H264_LPS_RANGE_OFFSET   512
#define	H264_MLPS_STATE_OFFSET   1024
#define	H264_LAST_COEFF_FLAG_OFFSET_8x8_OFFSET   1280
#define	CABAC_BITS   16
#define	CABAC_MASK   ((1<<CABAC_BITS)-1)

Typedefs
typedef struct CABACContext	CABACContext

Functions
void	ff_init_cabac_encoder (CABACContext *c, uint8_t *buf, int buf_size)
void	ff_init_cabac_decoder (CABACContext *c, const uint8_t *buf, int buf_size)
void	ff_init_cabac_states (void)

Detailed Description

Context Adaptive Binary Arithmetic Coder.

Definition in file cabac.h.

Macro Definition Documentation

#define CABAC_BITS   16

Definition at line 39 of file cabac.h.

Referenced by ff_h264_decode_mb_cabac(), get_cabac_bypass(), get_cabac_bypass_sign(), get_cabac_inline(), get_cabac_terminate(), refill(), and refill2().

#define CABAC_MASK   ((1<<CABAC_BITS)-1)

Definition at line 40 of file cabac.h.

Referenced by get_cabac_bypass(), get_cabac_bypass_sign(), get_cabac_inline(), refill(), refill2(), and renorm_cabac_decoder_once().

#define H264_LAST_COEFF_FLAG_OFFSET_8x8_OFFSET   1280

Definition at line 37 of file cabac.h.

#define H264_LPS_RANGE_OFFSET   512

Definition at line 35 of file cabac.h.

#define H264_MLPS_STATE_OFFSET   1024

Definition at line 36 of file cabac.h.

#define H264_NORM_SHIFT_OFFSET   0

Definition at line 34 of file cabac.h.

Typedef Documentation

typedef struct CABACContext CABACContext

Function Documentation

void ff_init_cabac_decoder	(	CABACContext *	c,
		const uint8_t *	buf,
		int	buf_size
	)

Parameters

buf_size

size of buf in bits

Definition at line 125 of file cabac.c.

Referenced by decode_slice(), ff_h264_decode_mb_cabac(), and ff_init_cabac_states().

void ff_init_cabac_encoder	(	CABACContext *	c,
		uint8_t *	buf,
		int	buf_size
	)

Parameters

buf_size

size of buf in bits

Definition at line 112 of file cabac.c.

Referenced by ff_init_cabac_states().

void ff_init_cabac_states

(

void

)

Definition at line 140 of file cabac.c.

Referenced by ff_h264_decode_init(), and ff_init_cabac_states().