mirror of https://git.ffmpeg.org/ffmpeg.git
274 lines
7.1 KiB
C
274 lines
7.1 KiB
C
/*
|
|
* Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
|
|
* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_CAVS_H
|
|
#define AVCODEC_CAVS_H
|
|
|
|
#include "cavsdsp.h"
|
|
#include "dsputil.h"
|
|
#include "get_bits.h"
|
|
#include "videodsp.h"
|
|
|
|
#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
|
|
|
|
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
|
|
};
|
|
|
|
DECLARE_ALIGNED(8, typedef, struct) {
|
|
int16_t x;
|
|
int16_t y;
|
|
int16_t dist;
|
|
int16_t ref;
|
|
} cavs_vector;
|
|
|
|
struct dec_2dvlc {
|
|
int8_t rltab[59][3];
|
|
int8_t level_add[27];
|
|
int8_t golomb_order;
|
|
int inc_limit;
|
|
int8_t max_run;
|
|
};
|
|
|
|
typedef struct AVSFrame {
|
|
AVFrame *f;
|
|
int poc;
|
|
} AVSFrame;
|
|
|
|
typedef struct AVSContext {
|
|
AVCodecContext *avctx;
|
|
DSPContext dsp;
|
|
VideoDSPContext vdsp;
|
|
CAVSDSPContext cdsp;
|
|
GetBitContext gb;
|
|
AVSFrame cur; ///< currently decoded frame
|
|
AVSFrame DPB[2]; ///< reference frames
|
|
int dist[2]; ///< temporal distances from current frame to ref frames
|
|
int low_delay;
|
|
int profile, level;
|
|
int aspect_ratio;
|
|
int mb_width, mb_height;
|
|
int width, height;
|
|
int stream_revision; ///<0 for samples from 2006, 1 for rm52j encoder
|
|
int progressive;
|
|
int pic_structure;
|
|
int skip_mode_flag; ///< select between skip_count or one skip_flag per MB
|
|
int loop_filter_disable;
|
|
int alpha_offset, beta_offset;
|
|
int ref_flag;
|
|
int mbx, mby, mbidx; ///< macroblock coordinates
|
|
int flags; ///< availability flags of neighbouring macroblocks
|
|
int stc; ///< last start code
|
|
uint8_t *cy, *cu, *cv; ///< current MB sample pointers
|
|
int left_qp;
|
|
uint8_t *top_qp;
|
|
|
|
/** mv motion vector cache
|
|
0: D3 B2 B3 C2
|
|
4: A1 X0 X1 -
|
|
8: A3 X2 X3 -
|
|
|
|
X are the vectors in the current macroblock (5,6,9,10)
|
|
A is the macroblock to the left (4,8)
|
|
B is the macroblock to the top (1,2)
|
|
C is the macroblock to the top-right (3)
|
|
D is the macroblock to the top-left (0)
|
|
|
|
the same is repeated for backward motion vectors */
|
|
cavs_vector mv[2*4*3];
|
|
cavs_vector *top_mv[2];
|
|
cavs_vector *col_mv;
|
|
|
|
/** luma pred mode cache
|
|
0: -- B2 B3
|
|
3: A1 X0 X1
|
|
6: A3 X2 X3 */
|
|
int pred_mode_Y[3*3];
|
|
int *top_pred_Y;
|
|
int l_stride, c_stride;
|
|
int luma_scan[4];
|
|
int qp;
|
|
int qp_fixed;
|
|
int cbp;
|
|
ScanTable scantable;
|
|
|
|
/** intra prediction is done with un-deblocked samples
|
|
they are saved here before deblocking the MB */
|
|
uint8_t *top_border_y, *top_border_u, *top_border_v;
|
|
uint8_t left_border_y[26], left_border_u[10], left_border_v[10];
|
|
uint8_t intern_border_y[26];
|
|
uint8_t topleft_border_y, topleft_border_u, topleft_border_v;
|
|
|
|
void (*intra_pred_l[8])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
|
|
void (*intra_pred_c[7])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
|
|
uint8_t *col_type_base;
|
|
|
|
/* scaling factors for MV prediction */
|
|
int sym_factor; ///< for scaling in symmetrical B block
|
|
int direct_den[2]; ///< for scaling in direct B block
|
|
int scale_den[2]; ///< for scaling neighbouring MVs
|
|
|
|
uint8_t *edge_emu_buffer;
|
|
|
|
int got_keyframe;
|
|
int16_t *block;
|
|
} AVSContext;
|
|
|
|
extern const uint8_t ff_cavs_partition_flags[30];
|
|
extern const cavs_vector ff_cavs_intra_mv;
|
|
extern const cavs_vector ff_cavs_dir_mv;
|
|
|
|
static inline void set_mvs(cavs_vector *mv, enum cavs_block size) {
|
|
switch(size) {
|
|
case BLK_16X16:
|
|
mv[MV_STRIDE ] = mv[0];
|
|
mv[MV_STRIDE+1] = mv[0];
|
|
case BLK_16X8:
|
|
mv[1] = mv[0];
|
|
break;
|
|
case BLK_8X16:
|
|
mv[MV_STRIDE] = mv[0];
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type);
|
|
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);
|
|
int ff_cavs_next_mb(AVSContext *h);
|
|
int ff_cavs_init_pic(AVSContext *h);
|
|
void ff_cavs_init_top_lines(AVSContext *h);
|
|
int ff_cavs_init(AVCodecContext *avctx);
|
|
int ff_cavs_end (AVCodecContext *avctx);
|
|
|
|
#endif /* AVCODEC_CAVS_H */
|