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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Motion estimation |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVCODEC_MOTIONEST_H |
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| 22 | #define AVCODEC_MOTIONEST_H |
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| 23 | |||
| 24 | #include |
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| 25 | |||
| 26 | #include "avcodec.h" |
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| 27 | #include "hpeldsp.h" |
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| 28 | #include "qpeldsp.h" |
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| 29 | |||
| 30 | struct MpegEncContext; |
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| 31 | |||
| 32 | #define MAX_MV 4096 |
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| 33 | #define MAX_DMV (2*MAX_MV) |
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| 34 | |||
| 35 | #define FF_ME_ZERO 0 |
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| 36 | #define FF_ME_EPZS 1 |
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| 37 | #define FF_ME_XONE 2 |
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| 38 | |||
| 39 | /** |
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| 40 | * Motion estimation context. |
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| 41 | */ |
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| 42 | typedef struct MotionEstContext { |
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| 43 | AVCodecContext *avctx; |
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| 44 | int skip; ///< set if ME is skipped for the current MB |
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| 45 | int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME |
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| 46 | int direct_basis_mv[4][2]; |
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| 47 | uint8_t *scratchpad; /**< data area for the ME algo, so that |
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| 48 | * the ME does not need to malloc/free. */ |
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| 49 | uint8_t *best_mb; |
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| 50 | uint8_t *temp_mb[2]; |
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| 51 | uint8_t *temp; |
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| 52 | int best_bits; |
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| 53 | uint32_t *map; ///< map to avoid duplicate evaluations |
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| 54 | uint32_t *score_map; ///< map to store the scores |
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| 55 | unsigned map_generation; |
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| 56 | int pre_penalty_factor; |
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| 57 | int penalty_factor; /**< an estimate of the bits required to |
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| 58 | * code a given mv value, e.g. (1,0) takes |
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| 59 | * more bits than (0,0). We have to |
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| 60 | * estimate whether any reduction in |
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| 61 | * residual is worth the extra bits. */ |
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| 62 | int sub_penalty_factor; |
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| 63 | int mb_penalty_factor; |
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| 64 | int flags; |
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| 65 | int sub_flags; |
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| 66 | int mb_flags; |
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| 67 | int pre_pass; ///< = 1 for the pre pass |
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| 68 | int dia_size; |
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| 69 | int xmin; |
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| 70 | int xmax; |
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| 71 | int ymin; |
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| 72 | int ymax; |
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| 73 | int pred_x; |
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| 74 | int pred_y; |
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| 75 | uint8_t *src[4][4]; |
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| 76 | uint8_t *ref[4][4]; |
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| 77 | int stride; |
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| 78 | int uvstride; |
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| 79 | /* temp variables for picture complexity calculation */ |
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| 80 | int64_t mc_mb_var_sum_temp; |
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| 81 | int64_t mb_var_sum_temp; |
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| 82 | int scene_change_score; |
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| 83 | |||
| 84 | op_pixels_func(*hpel_put)[4]; |
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| 85 | op_pixels_func(*hpel_avg)[4]; |
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| 86 | qpel_mc_func(*qpel_put)[16]; |
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| 87 | qpel_mc_func(*qpel_avg)[16]; |
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| 88 | uint8_t (*mv_penalty)[MAX_DMV * 2 + 1]; ///< bit amount needed to encode a MV |
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| 89 | uint8_t *current_mv_penalty; |
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| 90 | int (*sub_motion_search)(struct MpegEncContext *s, |
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| 91 | int *mx_ptr, int *my_ptr, int dmin, |
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| 92 | int src_index, int ref_index, |
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| 93 | int size, int h); |
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| 94 | } MotionEstContext; |
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| 95 | |||
| 96 | static inline int ff_h263_round_chroma(int x) |
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| 97 | { |
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| 98 | //FIXME static or not? |
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| 99 | static const uint8_t h263_chroma_roundtab[16] = { |
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| 100 | // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
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| 101 | 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, |
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| 102 | }; |
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| 103 | return h263_chroma_roundtab[x & 0xf] + (x >> 3); |
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| 104 | } |
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| 105 | |||
| 106 | int ff_init_me(struct MpegEncContext *s); |
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| 107 | |||
| 108 | void ff_estimate_p_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y); |
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| 109 | void ff_estimate_b_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y); |
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| 110 | |||
| 111 | int ff_pre_estimate_p_frame_motion(struct MpegEncContext *s, |
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| 112 | int mb_x, int mb_y); |
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| 113 | |||
| 114 | int ff_epzs_motion_search(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, |
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| 115 | int P[10][2], int src_index, int ref_index, |
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| 116 | int16_t (*last_mv)[2], int ref_mv_scale, int size, |
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| 117 | int h); |
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| 118 | |||
| 119 | int ff_get_mb_score(struct MpegEncContext *s, int mx, int my, int src_index, |
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| 120 | int ref_index, int size, int h, int add_rate); |
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| 121 | |||
| 122 | int ff_get_best_fcode(struct MpegEncContext *s, |
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| 123 | int16_t (*mv_table)[2], int type); |
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| 124 | |||
| 125 | void ff_fix_long_p_mvs(struct MpegEncContext *s); |
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| 126 | void ff_fix_long_mvs(struct MpegEncContext *s, uint8_t *field_select_table, |
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| 127 | int field_select, int16_t (*mv_table)[2], int f_code, |
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| 128 | int type, int truncate); |
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| 129 | |||
| 130 | #endif /* AVCODEC_MOTIONEST_H */ |