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
29
31
32 #if ARCH_IA64 // Limit static arrays to avoid gcc failing "short data segment overflowed"
33 #define MAX_MV 1024
34 #else
36 #endif
37 #define MAX_DMV (2*MAX_MV)
38 #define ME_MAP_SIZE 64
39
43
44 /**
45 * Motion estimation context.
46 */
49 int skip;
///< set if ME is skipped for the current MB
52 uint8_t *
scratchpad;
/**< data area for the ME algo, so that
53 * the ME does not need to malloc/free. */
55 uint32_t *
map;
///< map to avoid duplicate evaluations
60 * code a given mv value, e.g. (1,0) takes
61 * more bits than (0,0). We have to
62 * estimate whether any reduction in
63 * residual is worth the extra bits. */
77 const uint8_t *
src[4][4];
78 const uint8_t *
ref[4][4];
81 /* temp variables for picture complexity calculation */
85
93 int *mx_ptr, int *my_ptr, int dmin,
94 int src_index, int ref_index,
97
99 {
100 //FIXME static or not?
101 static const uint8_t h263_chroma_roundtab[16] = {
102 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
103 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
104 };
105 return h263_chroma_roundtab[x & 0xf] + (x >> 3);
106 }
107
109
112
115
117 int P[10][2],
int src_index,
int ref_index,
118 const int16_t (*
last_mv)[2],
int ref_mv_scale,
120
122 int ref_index,
int size,
int h,
int add_rate);
123
125 const int16_t (*mv_table)[2],
int type);
126
130 int type,
int truncate);
131
132 #endif /* AVCODEC_MOTION_EST_H */