| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Motion estimation | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #ifndef AVCODEC_MOTION_EST_H | ||
| 22 | #define AVCODEC_MOTION_EST_H | ||
| 23 | |||
| 24 | #include <stdint.h> | ||
| 25 | |||
| 26 | #include "avcodec.h" | ||
| 27 | #include "hpeldsp.h" | ||
| 28 | #include "me_cmp.h" | ||
| 29 | #include "qpeldsp.h" | ||
| 30 | |||
| 31 | struct MpegEncContext; | ||
| 32 | |||
| 33 | #if ARCH_IA64 // Limit static arrays to avoid gcc failing "short data segment overflowed" | ||
| 34 | #define MAX_MV 1024 | ||
| 35 | #else | ||
| 36 | #define MAX_MV 4096 | ||
| 37 | #endif | ||
| 38 | #define MAX_DMV (2*MAX_MV) | ||
| 39 | #define ME_MAP_SIZE 64 | ||
| 40 | |||
| 41 | #define FF_ME_ZERO 0 | ||
| 42 | #define FF_ME_EPZS 1 | ||
| 43 | #define FF_ME_XONE 2 | ||
| 44 | |||
| 45 | /** | ||
| 46 | * Motion estimation context. | ||
| 47 | */ | ||
| 48 | typedef struct MotionEstContext { | ||
| 49 | AVCodecContext *avctx; | ||
| 50 | int skip; ///< set if ME is skipped for the current MB | ||
| 51 | int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME | ||
| 52 | int direct_basis_mv[4][2]; | ||
| 53 | uint8_t *scratchpad; /**< data area for the ME algo, so that | ||
| 54 | * the ME does not need to malloc/free. */ | ||
| 55 | uint8_t *temp; | ||
| 56 | uint32_t *map; ///< map to avoid duplicate evaluations | ||
| 57 | uint32_t *score_map; ///< map to store the scores | ||
| 58 | unsigned map_generation; | ||
| 59 | int pre_penalty_factor; | ||
| 60 | int penalty_factor; /**< an estimate of the bits required to | ||
| 61 | * code a given mv value, e.g. (1,0) takes | ||
| 62 | * more bits than (0,0). We have to | ||
| 63 | * estimate whether any reduction in | ||
| 64 | * residual is worth the extra bits. */ | ||
| 65 | int sub_penalty_factor; | ||
| 66 | int mb_penalty_factor; | ||
| 67 | int flags; | ||
| 68 | int sub_flags; | ||
| 69 | int mb_flags; | ||
| 70 | int pre_pass; ///< = 1 for the pre pass | ||
| 71 | int dia_size; | ||
| 72 | int xmin; | ||
| 73 | int xmax; | ||
| 74 | int ymin; | ||
| 75 | int ymax; | ||
| 76 | int pred_x; | ||
| 77 | int pred_y; | ||
| 78 | const uint8_t *src[4][4]; | ||
| 79 | const uint8_t *ref[4][4]; | ||
| 80 | int stride; | ||
| 81 | int uvstride; | ||
| 82 | /* temp variables for picture complexity calculation */ | ||
| 83 | int64_t mc_mb_var_sum_temp; | ||
| 84 | int64_t mb_var_sum_temp; | ||
| 85 | int scene_change_score; | ||
| 86 | |||
| 87 | me_cmp_func me_pre_cmp[6]; | ||
| 88 | me_cmp_func me_cmp[6]; | ||
| 89 | me_cmp_func me_sub_cmp[6]; | ||
| 90 | me_cmp_func mb_cmp[6]; | ||
| 91 | |||
| 92 | me_cmp_func pix_abs[2][4]; | ||
| 93 | me_cmp_func sse; | ||
| 94 | |||
| 95 | op_pixels_func(*hpel_put)[4]; | ||
| 96 | op_pixels_func(*hpel_avg)[4]; | ||
| 97 | qpel_mc_func(*qpel_put)[16]; | ||
| 98 | qpel_mc_func(*qpel_avg)[16]; | ||
| 99 | const uint8_t (*mv_penalty)[MAX_DMV * 2 + 1]; ///< bit amount needed to encode a MV | ||
| 100 | const uint8_t *current_mv_penalty; | ||
| 101 | int (*sub_motion_search)(struct MpegEncContext *s, | ||
| 102 | int *mx_ptr, int *my_ptr, int dmin, | ||
| 103 | int src_index, int ref_index, | ||
| 104 | int size, int h); | ||
| 105 | } MotionEstContext; | ||
| 106 | |||
| 107 | 1433182 | static inline int ff_h263_round_chroma(int x) | |
| 108 | { | ||
| 109 | //FIXME static or not? | ||
| 110 | static const uint8_t h263_chroma_roundtab[16] = { | ||
| 111 | // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ||
| 112 | 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, | ||
| 113 | }; | ||
| 114 | 1433182 | return h263_chroma_roundtab[x & 0xf] + (x >> 3); | |
| 115 | } | ||
| 116 | |||
| 117 | /** | ||
| 118 | * Performs one-time initialization of the MotionEstContext. | ||
| 119 | */ | ||
| 120 | int ff_me_init(MotionEstContext *c, struct AVCodecContext *avctx, | ||
| 121 | const struct MECmpContext *mecc, int mpvenc); | ||
| 122 | |||
| 123 | void ff_me_init_pic(struct MpegEncContext *s); | ||
| 124 | |||
| 125 | void ff_estimate_p_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y); | ||
| 126 | void ff_estimate_b_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y); | ||
| 127 | |||
| 128 | int ff_pre_estimate_p_frame_motion(struct MpegEncContext *s, | ||
| 129 | int mb_x, int mb_y); | ||
| 130 | |||
| 131 | int ff_epzs_motion_search(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, | ||
| 132 | int P[10][2], int src_index, int ref_index, | ||
| 133 | const int16_t (*last_mv)[2], int ref_mv_scale, | ||
| 134 | int size, int h); | ||
| 135 | |||
| 136 | int ff_get_mb_score(struct MpegEncContext *s, int mx, int my, int src_index, | ||
| 137 | int ref_index, int size, int h, int add_rate); | ||
| 138 | |||
| 139 | int ff_get_best_fcode(struct MpegEncContext *s, | ||
| 140 | const int16_t (*mv_table)[2], int type); | ||
| 141 | |||
| 142 | void ff_fix_long_p_mvs(struct MpegEncContext *s, int type); | ||
| 143 | void ff_fix_long_mvs(struct MpegEncContext *s, uint8_t *field_select_table, | ||
| 144 | int field_select, int16_t (*mv_table)[2], int f_code, | ||
| 145 | int type, int truncate); | ||
| 146 | |||
| 147 | #endif /* AVCODEC_MOTION_EST_H */ | ||
| 148 |