2 * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
4 * This file is part of FFmpeg.
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.
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.
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
21 #ifndef AVUTIL_BASE64_H
22 #define AVUTIL_BASE64_H
27 * @defgroup lavu_base64 Base64
28 * @ingroup lavu_crypto
33 * Decode a base64-encoded string.
35 * @param out buffer for decoded data
36 * @param in null-terminated input string
37 * @param out_size size in bytes of the out buffer, must be at
38 * least 3/4 of the length of in, that is AV_BASE64_DECODE_SIZE(strlen(in))
39 * @return number of bytes written, or a negative value in case of
42 int av_base64_decode(uint8_t *out
, const char *in
, int out_size
);
45 * Calculate the output size in bytes needed to decode a base64 string
46 * with length x to a data buffer.
48 #define AV_BASE64_DECODE_SIZE(x) ((x) * 3LL / 4)
51 * Encode data to base64 and null-terminate.
53 * @param out buffer for encoded data
54 * @param out_size size in bytes of the out buffer (including the
55 * null terminator), must be at least AV_BASE64_SIZE(in_size)
56 * @param in input buffer containing the data to encode
57 * @param in_size size in bytes of the in buffer
58 * @return out or NULL in case of error
60 char *av_base64_encode(char *out
, int out_size
, const uint8_t *in
, int in_size
);
63 * Calculate the output size needed to base64-encode x bytes to a
64 * null-terminated string.
66 #define AV_BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1)
72 #endif /* AVUTIL_BASE64_H */