mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-24 08:12:44 +00:00
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
|
/*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg 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,
|
||
|
|
* 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
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Based on libavutil/base64.c
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
static const char b64[] =
|
||
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
||
|
|
unsigned i_bits = 0;
|
||
|
|
int i_shift = 0;
|
||
|
|
int out_len = 0;
|
||
|
|
int in;
|
||
|
|
|
||
|
|
#define putb64() do { \
|
||
|
|
putchar(b64[(i_bits << 6 >> i_shift) & 0x3f]); \
|
||
|
|
out_len++; \
|
||
|
|
i_shift -= 6; \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
while ((in = getchar()) != EOF) {
|
||
|
|
i_bits = (i_bits << 8) + in;
|
||
|
|
i_shift += 8;
|
||
|
|
while (i_shift > 6)
|
||
|
|
putb64();
|
||
|
|
}
|
||
|
|
while (i_shift > 0)
|
||
|
|
putb64();
|
||
|
|
while (out_len++ & 3)
|
||
|
|
putchar('=');
|
||
|
|
putchar('\n');
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|