yading@11: /*
yading@11:  * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVUTIL_BASE64_H
yading@11: #define AVUTIL_BASE64_H
yading@11: 
yading@11: #include <stdint.h>
yading@11: 
yading@11: /**
yading@11:  * @defgroup lavu_base64 Base64
yading@11:  * @ingroup lavu_crypto
yading@11:  * @{
yading@11:  */
yading@11: 
yading@11: 
yading@11: /**
yading@11:  * Decode a base64-encoded string.
yading@11:  *
yading@11:  * @param out      buffer for decoded data
yading@11:  * @param in       null-terminated input string
yading@11:  * @param out_size size in bytes of the out buffer, must be at
yading@11:  *                 least 3/4 of the length of in
yading@11:  * @return         number of bytes written, or a negative value in case of
yading@11:  *                 invalid input
yading@11:  */
yading@11: int av_base64_decode(uint8_t *out, const char *in, int out_size);
yading@11: 
yading@11: /**
yading@11:  * Encode data to base64 and null-terminate.
yading@11:  *
yading@11:  * @param out      buffer for encoded data
yading@11:  * @param out_size size in bytes of the out buffer (including the
yading@11:  *                 null terminator), must be at least AV_BASE64_SIZE(in_size)
yading@11:  * @param in       input buffer containing the data to encode
yading@11:  * @param in_size  size in bytes of the in buffer
yading@11:  * @return         out or NULL in case of error
yading@11:  */
yading@11: char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);
yading@11: 
yading@11: /**
yading@11:  * Calculate the output size needed to base64-encode x bytes to a
yading@11:  * null-terminated string.
yading@11:  */
yading@11: #define AV_BASE64_SIZE(x)  (((x)+2) / 3 * 4 + 1)
yading@11: 
yading@11:  /**
yading@11:   * @}
yading@11:   */
yading@11: 
yading@11: #endif /* AVUTIL_BASE64_H */