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