3 * Copyright (c) Luca Barbato
5 * This file is part of FFmpeg.
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.
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.
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
24 * Snappy decompression
26 * Snappy is a compression/decompression algorithm that does not aim for
27 * maximum compression, but rather for very high speeds and reasonable
30 * http://en.wikipedia.org/wiki/Snappy_%28software%29
33 #ifndef AVCODEC_SNAPPY_H
34 #define AVCODEC_SNAPPY_H
38 #include "bytestream.h"
41 * Get the uncompressed length of an input buffer compressed using the Snappy
42 * algorithm. The GetByteContext is not advanced.
44 * @param gb input GetByteContext.
45 * @return A positive length on success, AVERROR otherwise.
47 int64_t ff_snappy_peek_uncompressed_length(GetByteContext *gb);
50 * Decompress an input buffer using Snappy algorithm.
52 * @param gb input GetByteContext.
53 * @param buf input buffer pointer.
54 * @param size input/output on input, the size of buffer, on output, the size
55 * of the uncompressed data.
56 * @return 0 if success, AVERROR otherwise.
58 int ff_snappy_uncompress(GetByteContext *gb, uint8_t *buf, int64_t *size);
60 #endif /* AVCODEC_SNAPPY_H */