mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
130 lines
4.5 KiB
130 lines
4.5 KiB
/* |
|
* Motion estimation |
|
* |
|
* 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_MOTIONEST_H |
|
#define AVCODEC_MOTIONEST_H |
|
|
|
#include <stdint.h> |
|
|
|
#include "avcodec.h" |
|
#include "hpeldsp.h" |
|
#include "qpeldsp.h" |
|
|
|
struct MpegEncContext; |
|
|
|
#define MAX_MV 4096 |
|
#define ME_MAP_SIZE 64 |
|
|
|
#define FF_ME_ZERO 0 |
|
#define FF_ME_EPZS 1 |
|
#define FF_ME_XONE 2 |
|
|
|
/** |
|
* Motion estimation context. |
|
*/ |
|
typedef struct MotionEstContext { |
|
AVCodecContext *avctx; |
|
int skip; ///< set if ME is skipped for the current MB |
|
int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME |
|
int direct_basis_mv[4][2]; |
|
uint8_t *scratchpad; /**< data area for the ME algo, so that |
|
* the ME does not need to malloc/free. */ |
|
uint8_t *best_mb; |
|
uint8_t *temp_mb[2]; |
|
uint8_t *temp; |
|
int best_bits; |
|
uint32_t *map; ///< map to avoid duplicate evaluations |
|
uint32_t *score_map; ///< map to store the scores |
|
unsigned map_generation; |
|
int pre_penalty_factor; |
|
int penalty_factor; /**< an estimate of the bits required to |
|
* code a given mv value, e.g. (1,0) takes |
|
* more bits than (0,0). We have to |
|
* estimate whether any reduction in |
|
* residual is worth the extra bits. */ |
|
int sub_penalty_factor; |
|
int mb_penalty_factor; |
|
int flags; |
|
int sub_flags; |
|
int mb_flags; |
|
int pre_pass; ///< = 1 for the pre pass |
|
int dia_size; |
|
int xmin; |
|
int xmax; |
|
int ymin; |
|
int ymax; |
|
int pred_x; |
|
int pred_y; |
|
uint8_t *src[4][4]; |
|
uint8_t *ref[4][4]; |
|
int stride; |
|
int uvstride; |
|
/* temp variables for picture complexity calculation */ |
|
int64_t mc_mb_var_sum_temp; |
|
int64_t mb_var_sum_temp; |
|
int scene_change_score; |
|
|
|
op_pixels_func(*hpel_put)[4]; |
|
op_pixels_func(*hpel_avg)[4]; |
|
qpel_mc_func(*qpel_put)[16]; |
|
qpel_mc_func(*qpel_avg)[16]; |
|
uint8_t (*mv_penalty)[MAX_MV * 2 + 1]; ///< bit amount needed to encode a MV |
|
uint8_t *current_mv_penalty; |
|
int (*sub_motion_search)(struct MpegEncContext *s, |
|
int *mx_ptr, int *my_ptr, int dmin, |
|
int src_index, int ref_index, |
|
int size, int h); |
|
} MotionEstContext; |
|
|
|
static inline int ff_h263_round_chroma(int x) |
|
{ |
|
//FIXME static or not? |
|
static const uint8_t h263_chroma_roundtab[16] = { |
|
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
|
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, |
|
}; |
|
return h263_chroma_roundtab[x & 0xf] + (x >> 3); |
|
} |
|
|
|
int ff_init_me(struct MpegEncContext *s); |
|
|
|
void ff_estimate_p_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y); |
|
void ff_estimate_b_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y); |
|
|
|
int ff_pre_estimate_p_frame_motion(struct MpegEncContext *s, |
|
int mb_x, int mb_y); |
|
|
|
int ff_epzs_motion_search(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, |
|
int P[10][2], int src_index, int ref_index, |
|
int16_t (*last_mv)[2], int ref_mv_scale, int size, |
|
int h); |
|
|
|
int ff_get_mb_score(struct MpegEncContext *s, int mx, int my, int src_index, |
|
int ref_index, int size, int h, int add_rate); |
|
|
|
int ff_get_best_fcode(struct MpegEncContext *s, |
|
int16_t (*mv_table)[2], int type); |
|
|
|
void ff_fix_long_p_mvs(struct MpegEncContext *s); |
|
void ff_fix_long_mvs(struct MpegEncContext *s, uint8_t *field_select_table, |
|
int field_select, int16_t (*mv_table)[2], int f_code, |
|
int type, int truncate); |
|
|
|
#endif /* AVCODEC_MOTIONEST_H */
|
|
|