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Diffstat (limited to 'media/ffvpx/libavcodec/motion_est.h')
| -rw-r--r-- | media/ffvpx/libavcodec/motion_est.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/motion_est.h b/media/ffvpx/libavcodec/motion_est.h new file mode 100644 index 000000000..3b3a8d734 --- /dev/null +++ b/media/ffvpx/libavcodec/motion_est.h @@ -0,0 +1,135 @@ +/* + * 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_MOTION_EST_H +#define AVCODEC_MOTION_EST_H + +#include <stdint.h> + +#include "avcodec.h" +#include "hpeldsp.h" +#include "qpeldsp.h" + +struct MpegEncContext; + +#if ARCH_IA64 // Limit static arrays to avoid gcc failing "short data segment overflowed" +#define MAX_MV 1024 +#else +#define MAX_MV 4096 +#endif +#define MAX_DMV (2*MAX_MV) +#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_DMV * 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_MOTION_EST_H */ |