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 */ 40void 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 */ 51void 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 */ 56