cavs_aec.h File Reference

Chinese AVS video (AVS1-P16, Broadcasting profile) AEC decoder. More...

#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/error.h"
#include "libavutil/macros.h"
#include "get_bits.h"

Go to the source code of this file.

Data Structures
struct	CAVSAECModel
struct	CAVSAECContext

Macros
#define	CAVS_AEC_NUM_CTX   323
#define	CAVS_AEC_LGPMPS_INIT   1023
#define	CAVS_AEC_LGPMPS_MAX   1023
#define	CAVS_AEC_LGPMPS_REFLECT   2047
#define	CAVS_AEC_LGPMPS_BYPASS   1023
#define	CAVS_AEC_LGPMPS_STUFF   4
#define	CAVS_AEC_RT1_INIT   0xFF

Functions
static int	ff_cavs_aec_ctx_idx (int start, int span, int inc)
	Table 51 start index + ctxIdxInc, or AVERROR_INVALIDDATA/AVERROR_BUG.
static void	cavs_aec_update_ctx (CAVSAECModel *m, int bin)
	Adapt one context model after a bin has been decoded, 8.4.4.3.5.
static av_always_inline int	cavs_aec_decode_bin (CAVSAECContext *aec, int pred_mps, int lg_pmps)
	Decode one bin (8.4.4.3.2); the caller supplies predMps and lgPmps.
void	ff_cavs_aec_init (CAVSAECContext *aec, GetBitContext *gb)
	Reset all contexts and start the decoder on byte aligned gb (8.4.1).
static int	ff_cavs_aec_decode_decision (CAVSAECContext *aec, int ctx_idx)
	Decode a bin with one context model (8.4.4.3.2).
static int	ff_cavs_aec_decode_decision_w (CAVSAECContext *aec, int ctx_idx, int ctx_idx_w)
	Decode a bin with two weighted context models (8.4.4.3.2).
static int	ff_cavs_aec_decode_bypass (CAVSAECContext *aec)
	Decode a bypass bin, fixed lgPmps (8.4.4.3.3).
static int	ff_cavs_aec_decode_stuffing_bit (CAVSAECContext *aec)
	Decode aec_mb_stuffing_bit, fixed lgPmps (8.4.4.3.4).

Detailed Description

Chinese AVS video (AVS1-P16, Broadcasting profile) AEC decoder.

Definition in file cavs_aec.h.

Macro Definition Documentation

CAVS_AEC_NUM_CTX

#define CAVS_AEC_NUM_CTX   323

Definition at line 40 of file cavs_aec.h.

Referenced by ff_cavs_aec_ctx_idx(), ff_cavs_aec_decode_decision(), ff_cavs_aec_decode_decision_w(), and ff_cavs_aec_init().

CAVS_AEC_LGPMPS_INIT

#define CAVS_AEC_LGPMPS_INIT   1023

Definition at line 69 of file cavs_aec.h.

Referenced by ff_cavs_aec_init().

CAVS_AEC_LGPMPS_MAX

#define CAVS_AEC_LGPMPS_MAX   1023

Definition at line 70 of file cavs_aec.h.

Referenced by cavs_aec_update_ctx(), and ff_cavs_aec_decode_decision_w().

CAVS_AEC_LGPMPS_REFLECT

#define CAVS_AEC_LGPMPS_REFLECT   2047

Definition at line 71 of file cavs_aec.h.

Referenced by cavs_aec_update_ctx().

CAVS_AEC_LGPMPS_BYPASS

#define CAVS_AEC_LGPMPS_BYPASS   1023

Definition at line 72 of file cavs_aec.h.

Referenced by ff_cavs_aec_decode_bypass().

CAVS_AEC_LGPMPS_STUFF

#define CAVS_AEC_LGPMPS_STUFF   4

Definition at line 73 of file cavs_aec.h.

Referenced by ff_cavs_aec_decode_stuffing_bit().

CAVS_AEC_RT1_INIT

#define CAVS_AEC_RT1_INIT   0xFF

Definition at line 74 of file cavs_aec.h.

Referenced by ff_cavs_aec_init().

Function Documentation

ff_cavs_aec_ctx_idx()

static int ff_cavs_aec_ctx_idx ( int start, int span, int inc )

inlinestatic

Table 51 start index + ctxIdxInc, or AVERROR_INVALIDDATA/AVERROR_BUG.

Definition at line 43 of file cavs_aec.h.

Referenced by decode_residual_block_aec().

cavs_aec_update_ctx()

static void cavs_aec_update_ctx ( CAVSAECModel * m, int bin )

inlinestatic

Adapt one context model after a bin has been decoded, 8.4.4.3.5.

Definition at line 77 of file cavs_aec.h.

Referenced by ff_cavs_aec_decode_decision(), and ff_cavs_aec_decode_decision_w().

cavs_aec_decode_bin()

static av_always_inline int cavs_aec_decode_bin ( CAVSAECContext * aec, int pred_mps, int lg_pmps )

static

Decode one bin (8.4.4.3.2); the caller supplies predMps and lgPmps.

Definition at line 101 of file cavs_aec.h.

Referenced by ff_cavs_aec_decode_bypass(), ff_cavs_aec_decode_decision(), ff_cavs_aec_decode_decision_w(), and ff_cavs_aec_decode_stuffing_bit().

ff_cavs_aec_init()

void ff_cavs_aec_init	(	CAVSAECContext *	aec,
		GetBitContext *	gb )

Reset all contexts and start the decoder on byte aligned gb (8.4.1).

Definition at line 36 of file cavs_aec.c.

Referenced by check_for_slice().

ff_cavs_aec_decode_decision()

static int ff_cavs_aec_decode_decision ( CAVSAECContext * aec, int ctx_idx )

inlinestatic

Decode a bin with one context model (8.4.4.3.2).

Definition at line 157 of file cavs_aec.h.

Referenced by aec_cbp(), aec_intra_chroma_pred_mode(), aec_intra_luma_pred_mode(), aec_mb_part_type(), aec_mb_qp_delta(), aec_mb_skip_run(), aec_mb_type_b(), aec_mb_type_p(), aec_mv_diff(), aec_ref_index(), and decode_residual_block_aec().

ff_cavs_aec_decode_decision_w()

static int ff_cavs_aec_decode_decision_w ( CAVSAECContext * aec, int ctx_idx, int ctx_idx_w )

inlinestatic

Decode a bin with two weighted context models (8.4.4.3.2).

Definition at line 172 of file cavs_aec.h.

Referenced by decode_residual_block_aec().

ff_cavs_aec_decode_bypass()

static int ff_cavs_aec_decode_bypass ( CAVSAECContext * aec )

inlinestatic

Decode a bypass bin, fixed lgPmps (8.4.4.3.3).

Definition at line 203 of file cavs_aec.h.

Referenced by aec_mv_diff(), and decode_residual_block_aec().

ff_cavs_aec_decode_stuffing_bit()

static int ff_cavs_aec_decode_stuffing_bit ( CAVSAECContext * aec )

inlinestatic

Decode aec_mb_stuffing_bit, fixed lgPmps (8.4.4.3.4).

Definition at line 209 of file cavs_aec.h.

Referenced by decode_mb_pb_layer(), and decode_pic().