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
25
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
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. */
49 uint8_t *blk1
/* align width (8 or 16) */,
52
55
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93
95
96 #endif /* AVCODEC_ME_CMP_H */
me_cmp_func frame_skip_cmp[6]
void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx)
me_cmp_func me_pre_cmp[6]
me_cmp_func hadamard8_diff[6]
void ff_me_cmp_init_static(void)
me_cmp_func dct264_sad[6]
void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx)
void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx)
me_cmp_func pix_abs[2][4]
void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
static av_always_inline int cmp(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
compares a block (either a full macroblock or a partition thereof) against a proposed motion-compensa...
int(* me_cmp_func)(struct MpegEncContext *c, uint8_t *blk1, uint8_t *blk2, ptrdiff_t stride, int h)
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Libavcodec external API header.
main external API structure.
int ff_check_alignment(void)
me_cmp_func me_sub_cmp[6]
void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx)
int(* sum_abs_dctelem)(int16_t *block)
me_cmp_func quant_psnr[6]
void ff_dsputil_init_dwt(MECmpContext *c)
uint32_t ff_square_tab[512]
void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx)