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 FFMPEG_S3TC_H
  23 #define FFMPEG_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 /* FFMPEG_S3TC_H */