Commit | Line | Data |
---|---|---|
2ba45a60 DM |
1 | /* |
2 | * Copyright (C) 2012 Ronald S. Bultje | |
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 | /** | |
22 | * @file | |
23 | * Core video DSP helper functions | |
24 | */ | |
25 | ||
26 | #ifndef AVCODEC_VIDEODSP_H | |
27 | #define AVCODEC_VIDEODSP_H | |
28 | ||
29 | #include <stddef.h> | |
30 | #include <stdint.h> | |
31 | ||
32 | #define EMULATED_EDGE(depth) \ | |
33 | void ff_emulated_edge_mc_ ## depth(uint8_t *dst, const uint8_t *src, \ | |
34 | ptrdiff_t dst_stride, ptrdiff_t src_stride, \ | |
35 | int block_w, int block_h,\ | |
36 | int src_x, int src_y, int w, int h); | |
37 | ||
38 | EMULATED_EDGE(8) | |
39 | EMULATED_EDGE(16) | |
40 | ||
41 | typedef struct VideoDSPContext { | |
42 | /** | |
43 | * Copy a rectangular area of samples to a temporary buffer and replicate | |
44 | * the border samples. | |
45 | * | |
46 | * @param dst destination buffer | |
47 | * @param dst_stride number of bytes between 2 vertically adjacent samples | |
48 | * in destination buffer | |
49 | * @param src source buffer | |
50 | * @param dst_linesize number of bytes between 2 vertically adjacent | |
51 | * samples in the destination buffer | |
52 | * @param src_linesize number of bytes between 2 vertically adjacent | |
53 | * samples in both the source buffer | |
54 | * @param block_w width of block | |
55 | * @param block_h height of block | |
56 | * @param src_x x coordinate of the top left sample of the block in the | |
57 | * source buffer | |
58 | * @param src_y y coordinate of the top left sample of the block in the | |
59 | * source buffer | |
60 | * @param w width of the source buffer | |
61 | * @param h height of the source buffer | |
62 | */ | |
63 | void (*emulated_edge_mc)(uint8_t *dst, const uint8_t *src, | |
64 | ptrdiff_t dst_linesize, | |
65 | ptrdiff_t src_linesize, | |
66 | int block_w, int block_h, | |
67 | int src_x, int src_y, int w, int h); | |
68 | ||
69 | /** | |
70 | * Prefetch memory into cache (if supported by hardware). | |
71 | * | |
72 | * @param buf pointer to buffer to prefetch memory from | |
73 | * @param stride distance between two lines of buf (in bytes) | |
74 | * @param h number of lines to prefetch | |
75 | */ | |
76 | void (*prefetch)(uint8_t *buf, ptrdiff_t stride, int h); | |
77 | } VideoDSPContext; | |
78 | ||
79 | void ff_videodsp_init(VideoDSPContext *ctx, int bpc); | |
80 | ||
81 | /* for internal use only (i.e. called by ff_videodsp_init() */ | |
82 | void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc); | |
83 | void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc); | |
84 | void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc); | |
85 | void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc); | |
86 | ||
87 | #endif /* AVCODEC_VIDEODSP_H */ |