xref: /third_party/ffmpeg/libavcodec/me_cmp.h (revision cabdff1a) 
1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#ifndef AVCODEC_ME_CMP_H
20#define AVCODEC_ME_CMP_H
21
22#include <stdint.h>
23
24#include "avcodec.h"
25
26extern const uint32_t ff_square_tab[512];
27
28
29/* minimum alignment rules ;)
30 * If you notice errors in the align stuff, need more alignment for some ASM code
31 * for some CPU or need to use a function with less aligned data then send a mail
32 * to the ffmpeg-devel mailing list, ...
33 *
34 * !warning These alignments might not match reality, (missing attribute((align))
35 * stuff somewhere possible).
36 * I (Michael) did not check them, these are just the alignments which I think
37 * could be reached easily ...
38 *
39 * !future video codecs might need functions with less strict alignment
40 */
41
42struct MpegEncContext;
43/* Motion estimation:
44 * h is limited to { width / 2, width, 2 * width },
45 * but never larger than 16 and never smaller than 2.
46 * Although currently h < 4 is not used as functions with
47 * width < 8 are neither used nor implemented. */
48typedef int (*me_cmp_func)(struct MpegEncContext *c,
49                           uint8_t *blk1 /* align width (8 or 16) */,
50                           uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
51                           int h);
52
53typedef struct MECmpContext {
54    int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
55
56    me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
57    me_cmp_func sse[6];
58    me_cmp_func hadamard8_diff[6];
59    me_cmp_func dct_sad[6];
60    me_cmp_func quant_psnr[6];
61    me_cmp_func bit[6];
62    me_cmp_func rd[6];
63    me_cmp_func vsad[6];
64    me_cmp_func vsse[6];
65    me_cmp_func nsse[6];
66    me_cmp_func w53[6];
67    me_cmp_func w97[6];
68    me_cmp_func dct_max[6];
69    me_cmp_func dct264_sad[6];
70
71    me_cmp_func me_pre_cmp[6];
72    me_cmp_func me_cmp[6];
73    me_cmp_func me_sub_cmp[6];
74    me_cmp_func mb_cmp[6];
75    me_cmp_func ildct_cmp[6]; // only width 16 used
76    me_cmp_func frame_skip_cmp[6]; // only width 8 used
77
78    me_cmp_func pix_abs[2][4];
79    me_cmp_func median_sad[6];
80} MECmpContext;
81
82void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx);
83void ff_me_cmp_init_aarch64(MECmpContext *c, AVCodecContext *avctx);
84void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx);
85void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx);
86void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx);
87void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx);
88void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx);
89
90int ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type);
91
92void ff_dsputil_init_dwt(MECmpContext *c);
93
94#endif /* AVCODEC_ME_CMP_H */
95