FFmpeg
adler32.c
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 // LCOV_EXCL_START
20 
21 #include "libavutil/timer.h"
22 
23 #include <string.h>
24 
25 #include "libavutil/log.h"
26 #include "libavutil/adler32.h"
27 
28 #define LEN 7001
29 
30 int main(int argc, char **argv)
31 {
32  int i;
33  uint8_t data[LEN];
34  AVAdler checksum;
35 
37 
38  for (i = 0; i < LEN; i++)
39  data[i] = ((i * i) >> 3) + 123 * i;
40 
41  if (argc > 1 && !strcmp(argv[1], "-t")) {
42  for (i = 0; i < 1000; i++) {
44  checksum = av_adler32_update(1, data, LEN);
45  STOP_TIMER("adler");
46  }
47  } else {
48  checksum = av_adler32_update(1, data, LEN);
49  }
50 
51  av_log(NULL, AV_LOG_DEBUG, "%X (expected 50E6E508)\n", checksum);
52  return checksum == 0x50e6e508 ? 0 : 1;
53 }
54 // LCOV_EXCL_STOP
data
const char data[16]
Definition: mxf.c:148
START_TIMER
#define START_TIMER
Definition: timer.h:154
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
LEN
#define LEN
Definition: adler32.c:28
NULL
#define NULL
Definition: coverity.c:32
timer.h
adler32.h
av_adler32_update
AVAdler av_adler32_update(AVAdler adler, const uint8_t *buf, size_t len)
Calculate the Adler32 checksum of a buffer.
Definition: adler32.c:44
main
int main(int argc, char **argv)
Definition: adler32.c:30
av_log_set_level
void av_log_set_level(int level)
Set the log level.
Definition: log.c:442
log.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:255
AVAdler
uint32_t AVAdler
Definition: adler32.h:42
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
STOP_TIMER
#define STOP_TIMER(id)
Definition: timer.h:155