libavcodec/cavs.h File Reference

MV_FWD_D3
MV_FWD_B2
MV_FWD_B3
MV_FWD_C2
MV_FWD_A1
MV_FWD_X0
MV_FWD_X1
MV_FWD_A3
MV_FWD_X2
MV_FWD_X3
MV_BWD_D3
MV_BWD_B2
MV_BWD_B3
MV_BWD_C2
MV_BWD_A1
MV_BWD_X0
MV_BWD_X1
MV_BWD_A3
MV_BWD_X2
MV_BWD_X3

Definition at line 117 of file cavs.h.

enum cavs_mv_pred

Enumerator:

MV_PRED_MEDIAN
MV_PRED_LEFT
MV_PRED_TOP
MV_PRED_TOPRIGHT
MV_PRED_PSKIP
MV_PRED_BSKIP

Definition at line 101 of file cavs.h.

enum cavs_sub_mb

Enumerator:

B_SUB_DIRECT
B_SUB_FWD
B_SUB_BWD
B_SUB_SYM

Definition at line 73 of file cavs.h.

Function Documentation

int ff_cavs_end ( AVCodecContext * avctx )

Definition at line 739 of file cavs.c.

void ff_cavs_filter	(	AVSContext *	h,
		enum cavs_mb	mb_type
	)

in-loop deblocking filter for a single macroblock

boundary strength (bs) mapping:

--4---5-- 0 2 | | 6 | 7 | 1 3 | ---------

Definition at line 104 of file cavs.c.

Referenced by decode_mb_b(), decode_mb_i(), and decode_mb_p().

int ff_cavs_init ( AVCodecContext * avctx )

Definition at line 707 of file cavs.c.

void ff_cavs_init_mb ( AVSContext * h )

initialise predictors for motion vectors and intra prediction

Definition at line 574 of file cavs.c.

Referenced by decode_mb_b(), decode_mb_i(), and decode_mb_p().

void ff_cavs_init_pic ( AVSContext * h )

Definition at line 658 of file cavs.c.

Referenced by decode_pic().

void ff_cavs_init_top_lines ( AVSContext * h )

some predictions require data from the top-neighbouring macroblock.

this data has to be stored for one complete row of macroblocks and this storage space is allocated here

Definition at line 691 of file cavs.c.

Referenced by decode_seq_header().

void ff_cavs_inter	(	AVSContext *	h,
		enum cavs_mb	mb_type
	)

Definition at line 451 of file cavs.c.

Referenced by decode_mb_b(), and decode_mb_p().

void ff_cavs_load_intra_pred_chroma ( AVSContext * h )

Definition at line 226 of file cavs.c.

Referenced by decode_mb_i().

void ff_cavs_load_intra_pred_luma	(	AVSContext *	h,
		uint8_t *	top,
		uint8_t **	left,
		int	block
	)

Definition at line 176 of file cavs.c.

Referenced by decode_mb_i().

void ff_cavs_modify_mb_i	(	AVSContext *	h,
		int *	pred_mode_uv
	)

Definition at line 339 of file cavs.c.

Referenced by decode_mb_i().

void ff_cavs_mv	(	AVSContext *	h,
		enum cavs_mv_loc	nP,
		enum cavs_mv_loc	nC,
		enum cavs_mv_pred	mode,
		enum cavs_block	size,
		int	ref
	)

Definition at line 521 of file cavs.c.

Referenced by decode_mb_b(), and decode_mb_p().

int ff_cavs_next_mb ( AVSContext * h )

save predictors for later macroblocks and increase macroblock address

Returns:: 0 if end of frame is reached, 1 otherwise

Definition at line 614 of file cavs.c.

Referenced by decode_pic().

static void set_mvs	(	cavs_vector *	mv,
		enum cavs_block	size
	)			`[inline, static]`

Definition at line 232 of file cavs.h.

Referenced by decode_mb_b(), ff_cavs_init_pic(), ff_cavs_mv(), mv_pred_sym(), and set_mv_intra().

Variable Documentation

const cavs_vector ff_cavs_dir_mv

mark block as "no prediction from this direction" e.g.

forward motion vector in BWD partition

Definition at line 59 of file cavsdata.c.

Referenced by decode_mb_b(), and ff_cavs_init_pic().

const cavs_vector ff_cavs_intra_mv

mark block as using intra prediction

Definition at line 62 of file cavsdata.c.

Referenced by set_mv_intra().

const uint8_t ff_cavs_partition_flags[30]

Definition at line 24 of file cavsdata.c.

Referenced by decode_mb_b(), ff_cavs_filter(), and ff_cavs_inter().


Data Structures
struct	cavs_vector
struct	dec_2dvlc
struct	AVSContext
Defines
#define	SLICE_MAX_START_CODE 0x000001af
#define	EXT_START_CODE 0x000001b5
#define	USER_START_CODE 0x000001b2
#define	CAVS_START_CODE 0x000001b0
#define	PIC_I_START_CODE 0x000001b3
#define	PIC_PB_START_CODE 0x000001b6
#define	A_AVAIL 1
#define	B_AVAIL 2
#define	C_AVAIL 4
#define	D_AVAIL 8
#define	NOT_AVAIL -1
#define	REF_INTRA -2
#define	REF_DIR -3
#define	ESCAPE_CODE 59
#define	FWD0 0x01
#define	FWD1 0x02
#define	BWD0 0x04
#define	BWD1 0x08
#define	SYM0 0x10
#define	SYM1 0x20
#define	SPLITH 0x40
#define	SPLITV 0x80
#define	MV_BWD_OFFS 12
#define	MV_STRIDE 4
Enumerations
enum	cavs_mb { I_8X8 = 0, P_SKIP, P_16X16, P_16X8, P_8X16, P_8X8, B_SKIP, B_DIRECT, B_FWD_16X16, B_BWD_16X16, B_SYM_16X16, B_8X8 = 29 }
enum	cavs_sub_mb { B_SUB_DIRECT, B_SUB_FWD, B_SUB_BWD, B_SUB_SYM }
enum	cavs_intra_luma { INTRA_L_VERT, INTRA_L_HORIZ, INTRA_L_LP, INTRA_L_DOWN_LEFT, INTRA_L_DOWN_RIGHT, INTRA_L_LP_LEFT, INTRA_L_LP_TOP, INTRA_L_DC_128 }
enum	cavs_intra_chroma { INTRA_C_LP, INTRA_C_HORIZ, INTRA_C_VERT, INTRA_C_PLANE, INTRA_C_LP_LEFT, INTRA_C_LP_TOP, INTRA_C_DC_128 }
enum	cavs_mv_pred { MV_PRED_MEDIAN, MV_PRED_LEFT, MV_PRED_TOP, MV_PRED_TOPRIGHT, MV_PRED_PSKIP, MV_PRED_BSKIP }
enum	cavs_block { BLK_16X16, BLK_16X8, BLK_8X16, BLK_8X8 }
enum	cavs_mv_loc { MV_FWD_D3 = 0, MV_FWD_B2, MV_FWD_B3, MV_FWD_C2, MV_FWD_A1, MV_FWD_X0, MV_FWD_X1, MV_FWD_A3 = 8, MV_FWD_X2, MV_FWD_X3, MV_BWD_D3 = MV_BWD_OFFS, MV_BWD_B2, MV_BWD_B3, MV_BWD_C2, MV_BWD_A1, MV_BWD_X0, MV_BWD_X1, MV_BWD_A3 = MV_BWD_OFFS+8, MV_BWD_X2, MV_BWD_X3 }
Functions
static void	set_mvs (cavs_vector *mv, enum cavs_block size)
void	ff_cavs_filter (AVSContext *h, enum cavs_mb mb_type)
	in-loop deblocking filter for a single macroblock
void	ff_cavs_load_intra_pred_luma (AVSContext h, uint8_t top, uint8_t **left, int block)
void	ff_cavs_load_intra_pred_chroma (AVSContext *h)
void	ff_cavs_modify_mb_i (AVSContext h, int pred_mode_uv)
void	ff_cavs_inter (AVSContext *h, enum cavs_mb mb_type)
void	ff_cavs_mv (AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC, enum cavs_mv_pred mode, enum cavs_block size, int ref)
void	ff_cavs_init_mb (AVSContext *h)
	initialise predictors for motion vectors and intra prediction
int	ff_cavs_next_mb (AVSContext *h)
	save predictors for later macroblocks and increase macroblock address
void	ff_cavs_init_pic (AVSContext *h)
void	ff_cavs_init_top_lines (AVSContext *h)
	some predictions require data from the top-neighbouring macroblock.
int	ff_cavs_init (AVCodecContext *avctx)
int	ff_cavs_end (AVCodecContext *avctx)
Variables
const uint8_t	ff_cavs_partition_flags [30]
const cavs_vector	ff_cavs_intra_mv
	mark block as using intra prediction
const cavs_vector	ff_cavs_dir_mv
	mark block as "no prediction from this direction" e.g.