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- /*
- * Motion estimation
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; 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 2048
- #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 */
- int mc_mb_var_sum_temp;
- int 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 */
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