cavs.c File Reference

Chinese AVS video (AVS1-P2, JiZhun profile) decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "h264chroma.h"
#include "idctdsp.h"
#include "internal.h"
#include "mathops.h"
#include "qpeldsp.h"
#include "cavs.h"

Go to the source code of this file.

Macros
#define	SET_PARAMS
#define	LOWPASS(ARRAY, INDEX)   ((ARRAY[(INDEX) - 1] + 2 * ARRAY[(INDEX)] + ARRAY[(INDEX) + 1] + 2) >> 2)

Functions
static int	get_bs (cavs_vector *mvP, cavs_vector *mvQ, int b)
void	ff_cavs_filter (AVSContext *h, enum cavs_mb mb_type)
	in-loop deblocking filter for a single macroblock More...
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)
static void	intra_pred_vert (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_horiz (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_dc_128 (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_plane (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_lp (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_down_left (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_down_right (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_lp_left (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	intra_pred_lp_top (uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
static void	modify_pred (const int8_t *mod_table, int *mode)
void	ff_cavs_modify_mb_i (AVSContext *h, int *pred_mode_uv)
static void	mc_dir_part (AVSContext *h, AVFrame *pic, int chroma_height, int delta, int list, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int src_x_offset, int src_y_offset, qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op, cavs_vector *mv)
static void	mc_part_std (AVSContext *h, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg, cavs_vector *mv)
void	ff_cavs_inter (AVSContext *h, enum cavs_mb mb_type)
static void	scale_mv (AVSContext *h, int *d_x, int *d_y, cavs_vector *src, int distp)
static void	mv_pred_median (AVSContext *h, cavs_vector *mvP, cavs_vector *mvA, cavs_vector *mvB, cavs_vector *mvC)
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 More...
int	ff_cavs_next_mb (AVSContext *h)
	save predictors for later macroblocks and increase macroblock address More...
int	ff_cavs_init_pic (AVSContext *h)
int	ff_cavs_init_top_lines (AVSContext *h)
	some predictions require data from the top-neighbouring macroblock. More...
av_cold int	ff_cavs_init (AVCodecContext *avctx)
av_cold int	ff_cavs_end (AVCodecContext *avctx)

Variables
static const uint8_t	alpha_tab [64]
static const uint8_t	beta_tab [64]
static const uint8_t	tc_tab [64]
static const cavs_vector	un_mv = { 0, 0, 1, NOT_AVAIL }
	mark block as unavailable, i.e. More...
static const int8_t	left_modifier_l [8] = { 0, -1, 6, -1, -1, 7, 6, 7 }
static const int8_t	top_modifier_l [8] = { -1, 1, 5, -1, -1, 5, 7, 7 }
static const int8_t	left_modifier_c [7] = { 5, -1, 2, -1, 6, 5, 6 }
static const int8_t	top_modifier_c [7] = { 4, 1, -1, -1, 4, 6, 6 }

Detailed Description

Chinese AVS video (AVS1-P2, JiZhun profile) decoder.

Author

Stefan Gehrer stefa.nosp@m.n.ge.nosp@m.hrer@.nosp@m.gmx..nosp@m.de

Definition in file cavs.c.

Macro Definition Documentation

SET_PARAMS

#define SET_PARAMS

Value:

alpha = alpha_tab[av_clip_uintp2(qp_avg + h->alpha_offset, 6)];  \
    beta  =  beta_tab[av_clip_uintp2(qp_avg + h->beta_offset,  6)];  \
    tc    =    tc_tab[av_clip_uintp2(qp_avg + h->alpha_offset, 6)];

Definition at line 93 of file cavs.c.

Referenced by ff_cavs_filter().

LOWPASS

#define LOWPASS	(		ARRAY,
			INDEX
	)		((ARRAY[(INDEX) - 1] + 2 * ARRAY[(INDEX)] + ARRAY[(INDEX) + 1] + 2) >> 2)

Definition at line 304 of file cavs.c.

Referenced by intra_pred_down_left(), intra_pred_down_right(), intra_pred_lp(), intra_pred_lp_left(), and intra_pred_lp_top().

Function Documentation

get_bs()

static int get_bs ( cavs_vector *  mvP, cavs_vector *  mvQ, int  b  )

inlinestatic

Definition at line 74 of file cavs.c.

Referenced by ff_cavs_filter().

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 109 of file cavs.c.

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

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 185 of file cavs.c.

Referenced by decode_mb_i(), and set_mvs().

ff_cavs_load_intra_pred_chroma()

void ff_cavs_load_intra_pred_chroma

(

AVSContext *

h

)

Definition at line 236 of file cavs.c.

Referenced by decode_mb_i(), and set_mvs().

intra_pred_vert()

static void intra_pred_vert ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 259 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_horiz()

static void intra_pred_horiz ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 267 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_dc_128()

static void intra_pred_dc_128 ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 277 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_plane()

static void intra_pred_plane ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 285 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_lp()

static void intra_pred_lp ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 307 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_down_left()

static void intra_pred_down_left ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 315 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_down_right()

static void intra_pred_down_right ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 323 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_lp_left()

static void intra_pred_lp_left ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 336 of file cavs.c.

Referenced by ff_cavs_init().

intra_pred_lp_top()

static void intra_pred_lp_top ( uint8_t *  d, uint8_t *  top, uint8_t *  left, ptrdiff_t  stride  )

static

Definition at line 344 of file cavs.c.

Referenced by ff_cavs_init().

modify_pred()

static void modify_pred ( const int8_t *  mod_table, int *  mode  )

inlinestatic

Definition at line 354 of file cavs.c.

Referenced by ff_cavs_modify_mb_i().

ff_cavs_modify_mb_i()

void ff_cavs_modify_mb_i	(	AVSContext *	h,
		int *	pred_mode_uv
	)

Definition at line 363 of file cavs.c.

Referenced by decode_mb_i(), and set_mvs().

mc_dir_part()

static void mc_dir_part ( AVSContext *  h, AVFrame *  pic, int  chroma_height, int  delta, int  list, uint8_t *  dest_y, uint8_t *  dest_cb, uint8_t *  dest_cr, int  src_x_offset, int  src_y_offset, qpel_mc_func *  qpix_op, h264_chroma_mc_func  chroma_op, cavs_vector *  mv  )

inlinestatic

Definition at line 390 of file cavs.c.

Referenced by mc_part_std().

mc_part_std()

static void mc_part_std ( AVSContext *  h, int  chroma_height, int  delta, uint8_t *  dest_y, uint8_t *  dest_cb, uint8_t *  dest_cr, int  x_offset, int  y_offset, qpel_mc_func *  qpix_put, h264_chroma_mc_func  chroma_put, qpel_mc_func *  qpix_avg, h264_chroma_mc_func  chroma_avg, cavs_vector *  mv  )

inlinestatic

Definition at line 456 of file cavs.c.

Referenced by ff_cavs_inter(), and mc_part().

ff_cavs_inter()

void ff_cavs_inter	(	AVSContext *	h,
		enum cavs_mb	mb_type
	)

Definition at line 494 of file cavs.c.

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

scale_mv()

static void scale_mv ( AVSContext *  h, int *  d_x, int *  d_y, cavs_vector *  src, int  distp  )

inlinestatic

Definition at line 537 of file cavs.c.

Referenced by mv_pred_median().

mv_pred_median()

static void mv_pred_median ( AVSContext *  h, cavs_vector *  mvP, cavs_vector *  mvA, cavs_vector *  mvB, cavs_vector *  mvC  )

inlinestatic

Definition at line 545 of file cavs.c.

Referenced by ff_cavs_mv().

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 575 of file cavs.c.

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

ff_cavs_init_mb()

void ff_cavs_init_mb

(

AVSContext *

h

)

initialise predictors for motion vectors and intra prediction

Definition at line 637 of file cavs.c.

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

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 678 of file cavs.c.

Referenced by decode_pic(), and set_mvs().

ff_cavs_init_pic()

int ff_cavs_init_pic

(

AVSContext *

h

)

Definition at line 723 of file cavs.c.

Referenced by decode_pic(), and set_mvs().

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 759 of file cavs.c.

Referenced by decode_seq_header(), and set_mvs().

ff_cavs_init()

av_cold int ff_cavs_init

(

AVCodecContext *

avctx

)

Definition at line 794 of file cavs.c.

Referenced by set_mvs().

ff_cavs_end()

av_cold int ff_cavs_end

(

AVCodecContext *

avctx

)

Definition at line 840 of file cavs.c.

Referenced by ff_cavs_init(), and set_mvs().

Variable Documentation

alpha_tab

const uint8_t alpha_tab[64]

static

Initial value:

= {
     0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  2,  2,  2,  3,  3,
     4,  4,  5,  5,  6,  7,  8,  9, 10, 11, 12, 13, 15, 16, 18, 20,
    22, 24, 26, 28, 30, 33, 33, 35, 35, 36, 37, 37, 39, 39, 42, 44,
    46, 48, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
}

Definition at line 38 of file cavs.c.

Referenced by ps_tableinit().

beta_tab

const uint8_t beta_tab[64]

static

Initial value:

= {
     0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,
     2,  2,  3,  3,  3,  3,  4,  4,  4,  4,  5,  5,  5,  5,  6,  6,
     6,  7,  7,  7,  8,  8,  8,  9,  9, 10, 10, 11, 11, 12, 13, 14,
    15, 16, 17, 18, 19, 20, 21, 22, 23, 23, 24, 24, 25, 25, 26, 27
}

Definition at line 45 of file cavs.c.

tc_tab

const uint8_t tc_tab[64]

static

Initial value:

= {
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
    2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4,
    5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9
}

Definition at line 52 of file cavs.c.

un_mv

const cavs_vector un_mv = { 0, 0, 1, NOT_AVAIL }

static

mark block as unavailable, i.e.

out of picture or not yet decoded

Definition at line 61 of file cavs.c.

Referenced by ff_cavs_init(), ff_cavs_init_mb(), and ff_cavs_mv().

left_modifier_l

const int8_t left_modifier_l[8] = { 0, -1, 6, -1, -1, 7, 6, 7 }

static

Definition at line 63 of file cavs.c.

Referenced by ff_cavs_modify_mb_i().

top_modifier_l

const int8_t top_modifier_l[8] = { -1, 1, 5, -1, -1, 5, 7, 7 }

static

Definition at line 64 of file cavs.c.

Referenced by ff_cavs_modify_mb_i().

left_modifier_c

const int8_t left_modifier_c[7] = { 5, -1, 2, -1, 6, 5, 6 }

static

Definition at line 65 of file cavs.c.

Referenced by ff_cavs_modify_mb_i().

top_modifier_c

const int8_t top_modifier_c[7] = { 4, 1, -1, -1, 4, 6, 6 }

static

Definition at line 66 of file cavs.c.

Referenced by ff_cavs_modify_mb_i().