3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #ifndef AVCODEC_DSPUTIL_H
30 #define AVCODEC_DSPUTIL_H
38 /* minimum alignment rules ;)
39 * If you notice errors in the align stuff, need more alignment for some ASM code
40 * for some CPU or need to use a function with less aligned data then send a mail
41 * to the ffmpeg-devel mailing list, ...
43 * !warning These alignments might not match reality, (missing attribute((align))
44 * stuff somewhere possible).
45 * I (Michael) did not check them, these are just the alignments which I think
46 * could be reached easily ...
48 * !future video codecs might need functions with less strict alignment
51 struct MpegEncContext;
56 typedef struct DSPContext {
57 int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
59 me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
61 me_cmp_func hadamard8_diff[6];
62 me_cmp_func dct_sad[6];
63 me_cmp_func quant_psnr[6];
71 me_cmp_func dct_max[6];
72 me_cmp_func dct264_sad[6];
74 me_cmp_func me_pre_cmp[6];
75 me_cmp_func me_cmp[6];
76 me_cmp_func me_sub_cmp[6];
77 me_cmp_func mb_cmp[6];
78 me_cmp_func ildct_cmp[6]; // only width 16 used
79 me_cmp_func frame_skip_cmp[6]; // only width 8 used
81 me_cmp_func pix_abs[2][4];
84 attribute_deprecated void avpriv_dsputil_init(DSPContext* p, AVCodecContext *avctx);
87 #endif /* AVCODEC_DSPUTIL_H */