cabac_functions.h File Reference

#include <stddef.h>
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/intmath.h"
#include "cabac.h"
#include "config.h"

Go to the source code of this file.

Macros
#define	UNCHECKED_BITSTREAM_READER   !CONFIG_SAFE_BITSTREAM_READER

Functions
static void	refill (CABACContext *c)
static void	renorm_cabac_decoder_once (CABACContext *c)
static void	refill2 (CABACContext *c)
static av_always_inline int	get_cabac_inline (CABACContext *c, uint8_t *const state)
static int av_noinline av_unused	get_cabac_noinline (CABACContext *c, uint8_t *const state)
static int av_unused	get_cabac (CABACContext *c, uint8_t *const state)
static int av_unused	get_cabac_bypass (CABACContext *c)
static av_always_inline int	get_cabac_bypass_sign (CABACContext *c, int val)
static int av_unused	get_cabac_terminate (CABACContext *c)
static const av_unused uint8_t *	skip_bytes (CABACContext *c, int n)
	Skip n bytes and reset the decoder. More...

Variables
static const uint8_t *const	ff_h264_norm_shift = ff_h264_cabac_tables + H264_NORM_SHIFT_OFFSET
static const uint8_t *const	ff_h264_lps_range = ff_h264_cabac_tables + H264_LPS_RANGE_OFFSET
static const uint8_t *const	ff_h264_mlps_state = ff_h264_cabac_tables + H264_MLPS_STATE_OFFSET
static const uint8_t *const	ff_h264_last_coeff_flag_offset_8x8 = ff_h264_cabac_tables + H264_LAST_COEFF_FLAG_OFFSET_8x8_OFFSET

Detailed Description

Context Adaptive Binary Arithmetic Coder inline functions

Definition in file cabac_functions.h.

Macro Definition Documentation

UNCHECKED_BITSTREAM_READER

#define UNCHECKED_BITSTREAM_READER   !CONFIG_SAFE_BITSTREAM_READER

Definition at line 39 of file cabac_functions.h.

Function Documentation

refill()

static void refill ( CABACContext *  c )

static

Definition at line 64 of file cabac_functions.h.

Referenced by get_cabac_bypass(), get_cabac_bypass_sign(), and renorm_cabac_decoder_once().

renorm_cabac_decoder_once()

static void renorm_cabac_decoder_once ( CABACContext *  c )

inlinestatic

Definition at line 79 of file cabac_functions.h.

Referenced by get_cabac_terminate().

refill2()

static void refill2 ( CABACContext *  c )

static

Definition at line 89 of file cabac_functions.h.

Referenced by get_cabac_inline().

get_cabac_inline()

static av_always_inline int get_cabac_inline ( CABACContext *  c, uint8_t *const  state  )

static

Definition at line 116 of file cabac_functions.h.

Referenced by get_cabac(), and get_cabac_noinline().

get_cabac_noinline()

static int av_noinline av_unused get_cabac_noinline ( CABACContext *  c, uint8_t *const  state  )

static

Definition at line 140 of file cabac_functions.h.

Referenced by decode_cabac_field_decoding_flag(), decode_cabac_intra_mb_type(), decode_cabac_mb_cbp_chroma(), decode_cabac_mb_cbp_luma(), decode_cabac_mb_chroma_pre_mode(), decode_cabac_mb_skip(), ff_h264_decode_mb_cabac(), and main().

get_cabac()

static int av_unused get_cabac ( CABACContext *  c, uint8_t *const  state  )

static

Definition at line 144 of file cabac_functions.h.

Referenced by decode_cabac_b_mb_sub_type(), decode_cabac_mb_intra4x4_pred_mode(), decode_cabac_mb_mvd(), decode_cabac_mb_ref(), decode_cabac_p_mb_sub_type(), decode_cabac_residual_dc(), decode_cabac_residual_dc_422(), and decode_cabac_residual_nondc().

get_cabac_bypass()

static int av_unused get_cabac_bypass ( CABACContext *  c )

static

Definition at line 149 of file cabac_functions.h.

get_cabac_bypass_sign()

static av_always_inline int get_cabac_bypass_sign ( CABACContext *  c, int  val  )

static

Definition at line 167 of file cabac_functions.h.

get_cabac_terminate()

static int av_unused get_cabac_terminate ( CABACContext *  c )

static

Returns

the number of bytes read or 0 if no end

Definition at line 187 of file cabac_functions.h.

Referenced by decode_cabac_intra_mb_type(), decode_slice(), ff_hevc_cabac_init(), ff_hevc_end_of_slice_flag_decode(), ff_hevc_pcm_flag_decode(), ff_vvc_end_of_slice_flag_decode(), ff_vvc_end_of_subset_one_bit(), ff_vvc_end_of_tile_one_bit(), and main().

skip_bytes()

static const av_unused uint8_t* skip_bytes ( CABACContext *  c, int  n  )

static

Skip n bytes and reset the decoder.

Returns

the address of the first skipped byte or NULL if there's less than n bytes left

Definition at line 203 of file cabac_functions.h.

Referenced by cabac_reinit(), ff_mms_asf_header_parser(), get_slice_data_byte_offset(), hls_pcm_sample(), main(), read_header(), and run_psnr().

Variable Documentation

ff_h264_norm_shift

const uint8_t* const ff_h264_norm_shift = ff_h264_cabac_tables + H264_NORM_SHIFT_OFFSET

static

Definition at line 58 of file cabac_functions.h.

Referenced by get_cabac_inline(), refill2(), vvc_get_cabac(), and vvc_refill2().

ff_h264_lps_range

const uint8_t* const ff_h264_lps_range = ff_h264_cabac_tables + H264_LPS_RANGE_OFFSET

static

Definition at line 59 of file cabac_functions.h.

Referenced by get_cabac_inline(), and put_cabac().

ff_h264_mlps_state

const uint8_t* const ff_h264_mlps_state = ff_h264_cabac_tables + H264_MLPS_STATE_OFFSET

static

Definition at line 60 of file cabac_functions.h.

Referenced by get_cabac_inline(), and put_cabac().

ff_h264_last_coeff_flag_offset_8x8

const uint8_t* const ff_h264_last_coeff_flag_offset_8x8 = ff_h264_cabac_tables + H264_LAST_COEFF_FLAG_OFFSET_8x8_OFFSET

static

Definition at line 61 of file cabac_functions.h.

Referenced by decode_cabac_residual_internal().