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comparison lib/libavutil/base64.h @ 2134:992d2e6f907d

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preparation for libavcodec
author zipi
date Tue, 31 Dec 2013 14:52:14 +0000
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2133:e378232bfd36 2134:992d2e6f907d
1 /*
2 * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVUTIL_BASE64_H
22 #define AVUTIL_BASE64_H
23
24 #include <stdint.h>
25
26 /**
27 * @defgroup lavu_base64 Base64
28 * @ingroup lavu_crypto
29 * @{
30 */
31
32
33 /**
34 * Decode a base64-encoded string.
35 *
36 * @param out buffer for decoded data
37 * @param in null-terminated input string
38 * @param out_size size in bytes of the out buffer, must be at
39 * least 3/4 of the length of in
40 * @return number of bytes written, or a negative value in case of
41 * invalid input
42 */
43 int av_base64_decode(uint8_t *out, const char *in, int out_size);
44
45 /**
46 * Encode data to base64 and null-terminate.
47 *
48 * @param out buffer for encoded data
49 * @param out_size size in bytes of the out buffer (including the
50 * null terminator), must be at least AV_BASE64_SIZE(in_size)
51 * @param in input buffer containing the data to encode
52 * @param in_size size in bytes of the in buffer
53 * @return out or NULL in case of error
54 */
55 char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);
56
57 /**
58 * Calculate the output size needed to base64-encode x bytes to a
59 * null-terminated string.
60 */
61 #define AV_BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1)
62
63 /**
64 * @}
65 */
66
67 #endif /* AVUTIL_BASE64_H */