FFmpeg
snappy.h
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1 /*
2  * Snappy module
3  * Copyright (c) Luca Barbato
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 /**
23  * @file
24  * Snappy decompression
25  *
26  * Snappy is a compression/decompression algorithm that does not aim for
27  * maximum compression, but rather for very high speeds and reasonable
28  * compression.
29  *
30  * http://en.wikipedia.org/wiki/Snappy_%28software%29
31  */
32 
33 #ifndef AVCODEC_SNAPPY_H
34 #define AVCODEC_SNAPPY_H
35 
36 #include <stdint.h>
37 
38 #include "bytestream.h"
39 
40 /**
41  * Get the uncompressed length of an input buffer compressed using the Snappy
42  * algorithm. The GetByteContext is not advanced.
43  *
44  * @param gb input GetByteContext.
45  * @return A positive length on success, AVERROR otherwise.
46  */
48 
49 /**
50  * Decompress an input buffer using Snappy algorithm.
51  *
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.
57  */
58 int ff_snappy_uncompress(GetByteContext *gb, uint8_t *buf, int64_t *size);
59 
60 #endif /* AVCODEC_SNAPPY_H */
uint8_t
int64_t ff_snappy_peek_uncompressed_length(GetByteContext *gb)
Get the uncompressed length of an input buffer compressed using the Snappy algorithm.
Definition: snappy.c:133
ptrdiff_t size
Definition: opengl_enc.c:100
int ff_snappy_uncompress(GetByteContext *gb, uint8_t *buf, int64_t *size)
Decompress an input buffer using Snappy algorithm.
Definition: snappy.c:143