#include <stddef.h>
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/frame.h"
#include "libavutil/mem_internal.h"
#include "avcodec.h"
#include "cavsdsp.h"
#include "blockdsp.h"
#include "h264chroma.h"
#include "get_bits.h"
#include "videodsp.h"

Data Structures
struct	cavs_vector

struct	dec_2dvlc

struct	AVSFrame

struct	AVSContext

Macros
#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

#define	CAVS_DIR_MV (cavs_vector){ 0, 0, 1, REF_DIR }
	mark block as using intra prediction

#define	CAVS_INTRA_MV (cavs_vector){ 0, 0, 1, REF_INTRA }
	mark block as "no prediction from this direction" e.g.

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

int	ff_cavs_init_pic (AVSContext *h)

int	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_chroma_qp [64]

const uint8_t	ff_cavs_partition_flags [30]

Macro Definition Documentation

◆ SLICE_MAX_START_CODE

#define SLICE_MAX_START_CODE 0x000001af

Definition at line 39 of file cavs.h.

Referenced by cavs_decode_frame(), decode_chunks(), mpeg1_find_frame_end(), mpegvideo_extract_headers(), and slice_decode_thread().

◆ EXT_START_CODE

#define EXT_START_CODE 0x000001b5

Definition at line 40 of file cavs.h.

Referenced by cavs_decode_frame(), decode_chunks(), mpeg1_find_frame_end(), and mpegvideo_extract_headers().

◆ USER_START_CODE

#define USER_START_CODE 0x000001b2

Definition at line 41 of file cavs.h.

Referenced by cavs_decode_frame(), and decode_chunks().

◆ CAVS_START_CODE

#define CAVS_START_CODE 0x000001b0

Definition at line 42 of file cavs.h.

Referenced by cavs_decode_frame(), cavs_find_frame_end(), and cavs_parse_frame().

◆ PIC_I_START_CODE

#define PIC_I_START_CODE 0x000001b3

Definition at line 43 of file cavs.h.

Referenced by cavs_decode_frame(), cavs_find_frame_end(), and cavs_parse_frame().

◆ PIC_PB_START_CODE

#define PIC_PB_START_CODE 0x000001b6

Definition at line 44 of file cavs.h.

Referenced by cavs_decode_frame(), cavs_find_frame_end(), and decode_pic().

◆ A_AVAIL

#define A_AVAIL 1

Definition at line 46 of file cavs.h.

Referenced by ff_cavs_filter(), ff_cavs_load_intra_pred_chroma(), ff_cavs_load_intra_pred_luma(), ff_cavs_modify_mb_i(), and ff_cavs_next_mb().

◆ B_AVAIL

#define B_AVAIL 2

Definition at line 47 of file cavs.h.

Referenced by decode_slice_header(), ff_cavs_filter(), ff_cavs_init_mb(), ff_cavs_load_intra_pred_chroma(), ff_cavs_load_intra_pred_luma(), ff_cavs_modify_mb_i(), and ff_cavs_next_mb().

◆ C_AVAIL

#define C_AVAIL 4

Definition at line 48 of file cavs.h.

Referenced by decode_slice_header(), ff_cavs_init_mb(), ff_cavs_load_intra_pred_chroma(), ff_cavs_load_intra_pred_luma(), and ff_cavs_next_mb().

◆ D_AVAIL

#define D_AVAIL 8

Definition at line 49 of file cavs.h.

Referenced by ff_cavs_init_mb().

◆ NOT_AVAIL

#define NOT_AVAIL -1

Definition at line 50 of file cavs.h.

Referenced by decode_mb_i(), ff_cavs_init_mb(), ff_cavs_init_pic(), ff_cavs_mv(), ff_cavs_next_mb(), and set_intra_mode_default().

◆ REF_INTRA

#define REF_INTRA -2

Definition at line 51 of file cavs.h.

Referenced by get_bs().

◆ REF_DIR

#define REF_DIR -3

Definition at line 52 of file cavs.h.

◆ ESCAPE_CODE

#define ESCAPE_CODE 59

Definition at line 54 of file cavs.h.

Referenced by decode_residual_block().

◆ FWD0

#define FWD0 0x01

Definition at line 56 of file cavs.h.

Referenced by decode_mb_b().

◆ FWD1

#define FWD1 0x02

Definition at line 57 of file cavs.h.

Referenced by decode_mb_b().

◆ BWD0

#define BWD0 0x04

Definition at line 58 of file cavs.h.

Referenced by decode_mb_b().

◆ BWD1

#define BWD1 0x08

Definition at line 59 of file cavs.h.

Referenced by decode_mb_b().

◆ SYM0

#define SYM0 0x10

Definition at line 60 of file cavs.h.

Referenced by decode_mb_b().

◆ SYM1

#define SYM1 0x20

Definition at line 61 of file cavs.h.

Referenced by decode_mb_b().

◆ SPLITH

#define SPLITH 0x40

Definition at line 62 of file cavs.h.

Referenced by ff_cavs_filter().

◆ SPLITV

#define SPLITV 0x80

Definition at line 63 of file cavs.h.

Referenced by ff_cavs_filter().

◆ MV_BWD_OFFS

#define MV_BWD_OFFS 12

Definition at line 65 of file cavs.h.

Referenced by decode_mb_b(), get_bs(), mc_part_std(), mv_pred_direct(), and mv_pred_sym().

◆ MV_STRIDE

#define MV_STRIDE 4

Definition at line 66 of file cavs.h.

Referenced by set_mvs().

◆ CAVS_DIR_MV

#define CAVS_DIR_MV (cavs_vector){ 0, 0, 1, REF_DIR }

mark block as using intra prediction

Definition at line 255 of file cavs.h.

Referenced by decode_mb_b(), and ff_cavs_init_pic().

◆ CAVS_INTRA_MV

#define CAVS_INTRA_MV (cavs_vector){ 0, 0, 1, REF_INTRA }

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

forward motion vector in BWD partition

Definition at line 258 of file cavs.h.

Referenced by set_mv_intra().

Enumeration Type Documentation

◆ cavs_mb

enum cavs_mb

Enumerator
I_8X8
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

Definition at line 68 of file cavs.h.

◆ cavs_sub_mb

enum cavs_sub_mb

Enumerator
B_SUB_DIRECT
B_SUB_FWD
B_SUB_BWD
B_SUB_SYM

Definition at line 83 of file cavs.h.

◆ cavs_intra_luma

enum cavs_intra_luma

Enumerator
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

Definition at line 90 of file cavs.h.

◆ cavs_intra_chroma

enum cavs_intra_chroma

Enumerator
INTRA_C_LP
INTRA_C_HORIZ
INTRA_C_VERT
INTRA_C_PLANE
INTRA_C_LP_LEFT
INTRA_C_LP_TOP
INTRA_C_DC_128

Definition at line 101 of file cavs.h.

◆ cavs_mv_pred

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 111 of file cavs.h.

◆ cavs_block

enum cavs_block

Enumerator
BLK_16X16
BLK_16X8
BLK_8X16
BLK_8X8

Definition at line 120 of file cavs.h.

◆ cavs_mv_loc

enum cavs_mv_loc

Enumerator
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 127 of file cavs.h.

Function Documentation

◆ set_mvs()

static void set_mvs	(	cavs_vector *	mv,
		enum cavs_block	size )

inlinestatic

Definition at line 260 of file cavs.h.

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

◆ ff_cavs_filter()

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 108 of file cavs.c.

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

◆ ff_cavs_load_intra_pred_luma()

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

Definition at line 184 of file cavs.c.

Referenced by decode_mb_i().

◆ ff_cavs_load_intra_pred_chroma()

void ff_cavs_load_intra_pred_chroma ( AVSContext * h )

Definition at line 235 of file cavs.c.

Referenced by decode_mb_i().

◆ ff_cavs_modify_mb_i()

void ff_cavs_modify_mb_i	(	AVSContext *	h,
		int *	pred_mode_uv )

Definition at line 362 of file cavs.c.

Referenced by decode_mb_i().

◆ ff_cavs_inter()

void ff_cavs_inter	(	AVSContext *	h,
		enum cavs_mb	mb_type )

Definition at line 493 of file cavs.c.

Referenced by decode_mb_b(), and decode_mb_p().

◆ ff_cavs_mv()

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 574 of file cavs.c.

Referenced by decode_mb_b(), and decode_mb_p().

◆ ff_cavs_init_mb()

void ff_cavs_init_mb ( AVSContext * h )

initialise predictors for motion vectors and intra prediction

Definition at line 636 of file cavs.c.

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

◆ ff_cavs_next_mb()

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 677 of file cavs.c.

Referenced by decode_pic().

◆ ff_cavs_init_pic()

int ff_cavs_init_pic ( AVSContext * h )

Definition at line 722 of file cavs.c.

Referenced by decode_pic().

◆ ff_cavs_init_top_lines()

int 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 758 of file cavs.c.

Referenced by decode_seq_header().

◆ ff_cavs_init()

int ff_cavs_init ( AVCodecContext * avctx )

Definition at line 791 of file cavs.c.

◆ ff_cavs_end()

int ff_cavs_end ( AVCodecContext * avctx )

Definition at line 834 of file cavs.c.

Variable Documentation

◆ ff_cavs_chroma_qp

const uint8_t ff_cavs_chroma_qp[64]

extern

Definition at line 57 of file cavsdata.c.

Referenced by decode_residual_chroma(), and ff_cavs_filter().

◆ ff_cavs_partition_flags

const uint8_t ff_cavs_partition_flags[30]

extern

Definition at line 24 of file cavsdata.c.

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

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ SLICE_MAX_START_CODE

◆ EXT_START_CODE

◆ USER_START_CODE

◆ CAVS_START_CODE

◆ PIC_I_START_CODE

◆ PIC_PB_START_CODE

◆ A_AVAIL

◆ B_AVAIL

◆ C_AVAIL

◆ D_AVAIL

◆ NOT_AVAIL

◆ REF_INTRA

◆ REF_DIR

◆ ESCAPE_CODE

◆ FWD0

◆ FWD1

◆ BWD0

◆ BWD1

◆ SYM0

◆ SYM1

◆ SPLITH

◆ SPLITV

◆ MV_BWD_OFFS

◆ MV_STRIDE

◆ CAVS_DIR_MV

◆ CAVS_INTRA_MV

Enumeration Type Documentation

◆ cavs_mb

◆ cavs_sub_mb

◆ cavs_intra_luma

◆ cavs_intra_chroma

◆ cavs_mv_pred

◆ cavs_block

◆ cavs_mv_loc

Function Documentation

◆ set_mvs()

◆ ff_cavs_filter()

1 3 |

◆ ff_cavs_load_intra_pred_luma()

◆ ff_cavs_load_intra_pred_chroma()

◆ ff_cavs_modify_mb_i()

◆ ff_cavs_inter()

◆ ff_cavs_mv()

◆ ff_cavs_init_mb()

◆ ff_cavs_next_mb()

◆ ff_cavs_init_pic()

◆ ff_cavs_init_top_lines()

◆ ff_cavs_init()

◆ ff_cavs_end()

Variable Documentation

◆ ff_cavs_chroma_qp

◆ ff_cavs_partition_flags