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base64: improve documentation 

Originally committed as revision 23905 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-06-30 20:09:32 +00:00
parent 49bd8e4b84
commit ffd31cfef3
1 changed files with 13 additions and 13 deletions
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24
libavutil/base64.h
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@ -24,25 +24,25 @@
#include <stdint.h>
/**
* Decode the base64-encoded string in in and put the decoded
* data in out.
* Decode a base64-encoded string.
*
* @param out_size size in bytes of the out buffer, it should be at
* @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 the number of bytes written, or a negative value in case of
* error
* @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);