/*

 * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)

 *

 * This file is part of Libav.

 *

 * Libav is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * Libav is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with Libav; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#ifndef AVUTIL_BASE64_H

#define AVUTIL_BASE64_H

#include <stdint.h>

/**

 * @defgroup lavu_base64 Base64

 * @ingroup lavu_crypto

 * @{

 */

/**

 * Decode a base64-encoded string.

 *

 * @param out      buffer for decoded data

 * @param in       null-terminated input string

 * @param out_size size in bytes of the out buffer, must be at

 *                 least 3/4 of the length of in

 * @return         number of bytes written, or a negative value in case of

 *                 invalid input

 */

int av_base64_decode(uint8_t *out, const char *in, int out_size);

/**

 * Encode data to base64 and null-terminate.

 *

 * @param out      buffer for encoded data

 * @param out_size size in bytes of the output buffer, must be at

 *                 least AV_BASE64_SIZE(in_size)

 * @param in_size  size in bytes of the 'in' buffer

 * @return         'out' or NULL in case of error

 */

char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);

/**

 * Calculate the output size needed to base64-encode x bytes.

 */

#define AV_BASE64_SIZE(x)  (((x)+2) / 3 * 4 + 1)

 /**

  * @}

  */

#endif /* AVUTIL_BASE64_H */