s3tc.h
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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  */
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  */
52  const unsigned int w, const unsigned int h,
53  const unsigned int stride);
54 
55 #endif /* AVCODEC_S3TC_H */
int stride
Definition: mace.c:144
output residual component w
uint8_t
void ff_decode_dxt1(GetByteContext *gb, uint8_t *dst, const unsigned int w, const unsigned int h, const unsigned int stride)
Decode DXT1 encoded data to RGB32.
Definition: s3tc.c:77
void ff_decode_dxt3(GetByteContext *gb, uint8_t *dst, const unsigned int w, const unsigned int h, const unsigned int stride)
Decode DXT3 encoded data to RGB32.
Definition: s3tc.c:88
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160