configure: Add check_cc/require_cc helper functions to simplify some expressions

[ffmpeg] / libavutil / base64.h

diff --git a/libavutil/base64.h b/libavutil/base64.h
index 68429366c1b6c3b6912f64fd2ec6b467701b6140..4750cf5c724aeea26a3940fb8ba9ffe6264507df 100644 (file)
--- a/libavutil/base64.h
+++ b/libavutil/base64.h
@@ -1,20 +1,20 @@
 /*
  * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -24,25 +24,32 @@
 #include <stdint.h>
 
 /**
- * Decode the base64-encoded string in in and put the decoded
- * data in out.
+ * @defgroup lavu_base64 Base64
+ * @ingroup lavu_crypto
+ * @{
+ */
+
+
+/**
+ * Decode a base64-encoded string.
  *
- * @param out_size size in bytes of the out buffer, it should be at
- * least 3/4 of the length of in
- * @return the number of bytes written, or a negative value in case of
- * error
+ * @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 in base64 the data in in and put the resulting string
- * in out.
+ * Encode data to base64 and null-terminate.
  *
- * @param out_size size in bytes of the out string, it should be at
- * least ((in_size + 2) / 3) * 4 + 1
- * @param in_size size in bytes of the in buffer
- * @return the string containing the encoded data, or NULL in case of
- * error
+ * @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);
 
@@ -51,4 +58,8 @@ char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);
  */
 #define AV_BASE64_SIZE(x)  (((x)+2) / 3 * 4 + 1)
 
+ /**
+  * @}
+  */
+
 #endif /* AVUTIL_BASE64_H */