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60 lines
1.9 KiB
60 lines
1.9 KiB
/* |
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* Snappy module |
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* Copyright (c) Luca Barbato |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/** |
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* @file |
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* Snappy decompression |
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* |
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* Snappy is a compression/decompression algorithm that does not aim for |
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* maximum compression, but rather for very high speeds and reasonable |
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* compression. |
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* |
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* http://en.wikipedia.org/wiki/Snappy_%28software%29 |
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*/ |
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#ifndef AVCODEC_SNAPPY_H |
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#define AVCODEC_SNAPPY_H |
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#include <stdint.h> |
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#include "bytestream.h" |
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/** |
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* Get the uncompressed length of an input buffer compressed using the Snappy |
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* algorithm. The GetByteContext is not advanced. |
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* |
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* @param gb input GetByteContext. |
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* @return A positive length on success, AVERROR otherwise. |
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*/ |
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int64_t ff_snappy_peek_uncompressed_length(GetByteContext *gb); |
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/** |
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* Decompress an input buffer using Snappy algorithm. |
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* |
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* @param gb input GetByteContext. |
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* @param buf input buffer pointer. |
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* @param size input/output on input, the size of buffer, on output, the size |
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* of the uncompressed data. |
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* @return 0 if success, AVERROR otherwise. |
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*/ |
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int ff_snappy_uncompress(GetByteContext *gb, uint8_t *buf, int64_t *size); |
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#endif /* AVCODEC_SNAPPY_H */
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