2 * S3 Texture Compression (S3TC) decoding functions
3 * Copyright (c) 2007 by Ivo van Poorten
5 * This file is part of FFmpeg.
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.
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.
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
28 #define FF_S3TC_DXT1 0x31545844
29 #define FF_S3TC_DXT3 0x33545844
32 * Decode DXT1 encoded data to RGB32
33 * @param *src source buffer, has to be aligned on a 4-byte boundary
34 * @param *dst destination buffer
35 * @param w width of output image
36 * @param h height of output image
37 * @param stride line size of output image
39 void ff_decode_dxt1(const uint8_t *src, uint8_t *dst,
40 const unsigned int w, const unsigned int h,
41 const unsigned int stride);
43 * Decode DXT3 encoded data to RGB32
44 * @param *src source buffer, has to be aligned on a 4-byte boundary
45 * @param *dst destination buffer
46 * @param w width of output image
47 * @param h height of output image
48 * @param stride line size of output image
50 void ff_decode_dxt3(const uint8_t *src, uint8_t *dst,
51 const unsigned int w, const unsigned int h,
52 const unsigned int stride);