d368c5b80555a761ce895badbf564b99bd756528
[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 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 FF_S3TC_H
23 #define FF_S3TC_H
24
25 #include <stdint.h>
26
27 #define FF_S3TC_DXT1 0x31545844
28 #define FF_S3TC_DXT3 0x33545844
29
30 /**
31 * Decode DXT1 encoded data to RGB32
32 * @param *src source buffer, has to be aligned on a 4-byte boundary
33 * @param *dst destination buffer
34 * @param w width of output image
35 * @param h height of output image
36 * @param stride line size of output image
37 */
38 void ff_decode_dxt1(const uint8_t *src, uint8_t *dst,
39 const unsigned int w, const unsigned int h,
40 const unsigned int stride);
41 /**
42 * Decode DXT3 encoded data to RGB32
43 * @param *src source buffer, has to be aligned on a 4-byte boundary
44 * @param *dst destination buffer
45 * @param w width of output image
46 * @param h height of output image
47 * @param stride line size of output image
48 */
49 void ff_decode_dxt3(const uint8_t *src, uint8_t *dst,
50 const unsigned int w, const unsigned int h,
51 const unsigned int stride);
52
53 #endif