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1 | /* |
2 | * S3 Texture Compression (S3TC) decoding functions | |
3 | * Copyright (c) 2007 by Ivo van Poorten | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #ifndef AVCODEC_S3TC_H | |
23 | #define AVCODEC_S3TC_H | |
24 | ||
25 | #include <stdint.h> | |
26 | ||
27 | #include "bytestream.h" | |
28 | ||
29 | #define FF_S3TC_DXT1 0x31545844 | |
30 | #define FF_S3TC_DXT3 0x33545844 | |
31 | ||
32 | /** | |
33 | * Decode DXT1 encoded data to RGB32 | |
34 | * @param gb GetByteContext | |
35 | * @param dst destination buffer | |
36 | * @param w width of output image | |
37 | * @param h height of output image | |
38 | * @param stride line size of output image | |
39 | */ | |
40 | void ff_decode_dxt1(GetByteContext *gb, uint8_t *dst, | |
41 | const unsigned int w, const unsigned int h, | |
42 | const unsigned int stride); | |
43 | /** | |
44 | * Decode DXT3 encoded data to RGB32 | |
45 | * @param gb GetByteContext | |
46 | * @param dst destination buffer | |
47 | * @param w width of output image | |
48 | * @param h height of output image | |
49 | * @param stride line size of output image | |
50 | */ | |
51 | void ff_decode_dxt3(GetByteContext *gb, uint8_t *dst, | |
52 | const unsigned int w, const unsigned int h, | |
53 | const unsigned int stride); | |
54 | ||
55 | #endif /* AVCODEC_S3TC_H */ |