FFmpeg  4.0
file.c
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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 "libavutil/file.c"
20 
21 #undef printf
22 
23 int main(void)
24 {
25  uint8_t *buf;
26  size_t size;
27  if (av_file_map("file.c", &buf, &size, 0, NULL) < 0)
28  return 1;
29 
30  buf[0] = 's';
31  printf("%s", buf);
32  av_file_unmap(buf, size);
33  return 0;
34 }
#define NULL
Definition: coverity.c:32
int size
int main(void)
Definition: file.c:23
uint8_t
void av_file_unmap(uint8_t *bufptr, size_t size)
Unmap or free the buffer bufptr created by av_file_map().
Definition: file.c:133
int av_file_map(const char *filename, uint8_t **bufptr, size_t *size, int log_offset, void *log_ctx)
Read the file with name filename, and put its content in a newly allocated buffer or map it with mmap...
Definition: file.c:53
void * buf
Definition: avisynth_c.h:690