FFmpeg
libavutil
tests
crc.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
#include <stdint.h>
20
#include <stdio.h>
21
22
#include "
libavutil/crc.h
"
23
24
int
main
(
void
)
25
{
26
uint8_t buf[1999];
27
int
i
;
28
static
const
unsigned
p[7][3] = {
29
{
AV_CRC_32_IEEE_LE
, 0xEDB88320, 0x3D5CDD04 },
30
{
AV_CRC_32_IEEE
, 0x04C11DB7, 0xC0F5BAE0 },
31
{
AV_CRC_24_IEEE
, 0x864CFB , 0xB704CE },
32
{
AV_CRC_16_ANSI_LE
, 0xA001 , 0xBFD8 },
33
{
AV_CRC_16_ANSI
, 0x8005 , 0x1FBB },
34
{
AV_CRC_8_ATM
, 0x07 , 0xE3 },
35
{
AV_CRC_8_EBU
, 0x1D , 0xD6 },
36
};
37
const
AVCRC
*
ctx
;
38
39
for
(
i
= 0;
i
<
sizeof
(buf);
i
++)
40
buf[
i
] =
i
+
i
*
i
;
41
42
for
(
i
= 0;
i
< 7;
i
++) {
43
ctx
=
av_crc_get_table
(p[
i
][0]);
44
printf
(
"crc %08X = %X\n"
, p[
i
][1],
av_crc
(
ctx
, 0, buf,
sizeof
(buf)));
45
}
46
return
0;
47
}
AV_CRC_8_EBU
@ AV_CRC_8_EBU
Definition:
crc.h:56
AVCRC
uint32_t AVCRC
Definition:
crc.h:46
AV_CRC_24_IEEE
@ AV_CRC_24_IEEE
Definition:
crc.h:55
crc.h
AV_CRC_16_ANSI_LE
@ AV_CRC_16_ANSI_LE
Definition:
crc.h:54
ctx
AVFormatContext * ctx
Definition:
movenc.c:49
AV_CRC_16_ANSI
@ AV_CRC_16_ANSI
Definition:
crc.h:50
printf
printf("static const uint8_t my_array[100] = {\n")
av_crc_get_table
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition:
crc.c:374
i
#define i(width, name, range_min, range_max)
Definition:
cbs_h2645.c:256
main
int main(void)
Definition:
crc.c:24
AV_CRC_32_IEEE
@ AV_CRC_32_IEEE
Definition:
crc.h:52
av_crc
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition:
crc.c:392
AV_CRC_32_IEEE_LE
@ AV_CRC_32_IEEE_LE
Definition:
crc.h:53
AV_CRC_8_ATM
@ AV_CRC_8_ATM
Definition:
crc.h:49
Generated on Sat Oct 5 2024 19:22:49 for FFmpeg by
1.8.17