base64.h (1957B)
1 /* 2 * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com) 3 * 4 * This file is part of Libav. 5 * 6 * Libav 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 * Libav 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 Libav; 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 output buffer, must be at 50 * least AV_BASE64_SIZE(in_size) 51 * @param in_size size in bytes of the 'in' buffer 52 * @return 'out' or NULL in case of error 53 */ 54 char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size); 55 56 /** 57 * Calculate the output size needed to base64-encode x bytes. 58 */ 59 #define AV_BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1) 60 61 /** 62 * @} 63 */ 64 65 #endif /* AVUTIL_BASE64_H */