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https://gitee.com/openharmony/third_party_ffmpeg
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54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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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 */
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