25237b95bdd5ed58af998031003e63893a63a72e
[libav.git] / libavcodec / s3tc.h
1 /*
2 * S3 Texture Compression (S3TC) decoding functions
3 * Copyright (c) 2007 by Ivo van Poorten
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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 */