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/*
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 * S3 Texture Compression (S3TC) decoding functions
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 * Copyright (c) 2007 by Ivo van Poorten
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVCODEC_S3TC_H
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#define AVCODEC_S3TC_H
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#include <stdint.h>
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#define FF_S3TC_DXT1    0x31545844
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#define FF_S3TC_DXT3    0x33545844
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/**
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 * Decode DXT1 encoded data to RGB32
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 * @param *src source buffer, has to be aligned on a 4-byte boundary
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 * @param *dst destination buffer
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 * @param w width of output image
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 * @param h height of output image
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 * @param stride line size of output image
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 */
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void ff_decode_dxt1(const uint8_t *src, uint8_t *dst,
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                    const unsigned int w, const unsigned int h,
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                    const unsigned int stride);
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/**
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 * Decode DXT3 encoded data to RGB32
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 * @param *src source buffer, has to be aligned on a 4-byte boundary
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 * @param *dst destination buffer
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 * @param w width of output image
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 * @param h height of output image
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 * @param stride line size of output image
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 */
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void ff_decode_dxt3(const uint8_t *src, uint8_t *dst,
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                    const unsigned int w, const unsigned int h,
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                    const unsigned int stride);
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#endif /* AVCODEC_S3TC_H */