FFmpeg
libavutil
file.h
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
#ifndef AVUTIL_FILE_H
20
#define AVUTIL_FILE_H
21
22
#include <stddef.h>
23
#include <stdint.h>
24
25
#include "
attributes.h
"
26
27
/**
28
* @file
29
* Misc file utilities.
30
*/
31
32
/**
33
* Read the file with name filename, and put its content in a newly
34
* allocated buffer or map it with mmap() when available.
35
* In case of success set *bufptr to the read or mmapped buffer, and
36
* *size to the size in bytes of the buffer in *bufptr.
37
* Unlike mmap this function succeeds with zero sized files, in this
38
* case *bufptr will be set to NULL and *size will be set to 0.
39
* The returned buffer must be released with av_file_unmap().
40
*
41
* @param filename path to the file
42
* @param[out] bufptr pointee is set to the mapped or allocated buffer
43
* @param[out] size pointee is set to the size in bytes of the buffer
44
* @param log_offset loglevel offset used for logging
45
* @param log_ctx context used for logging
46
* @return a non negative number in case of success, a negative value
47
* corresponding to an AVERROR error code in case of failure
48
*/
49
av_warn_unused_result
50
int
av_file_map
(
const
char
*filename, uint8_t **bufptr,
size_t
*
size
,
51
int
log_offset,
void
*log_ctx);
52
53
/**
54
* Unmap or free the buffer bufptr created by av_file_map().
55
*
56
* @param bufptr the buffer previously created with av_file_map()
57
* @param size size in bytes of bufptr, must be the same as returned
58
* by av_file_map()
59
*/
60
void
av_file_unmap
(uint8_t *bufptr,
size_t
size
);
61
62
#endif
/* AVUTIL_FILE_H */
av_file_map
av_warn_unused_result 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:55
av_file_unmap
void av_file_unmap(uint8_t *bufptr, size_t size)
Unmap or free the buffer bufptr created by av_file_map().
Definition:
file.c:142
size
int size
Definition:
twinvq_data.h:10344
attributes.h
av_warn_unused_result
#define av_warn_unused_result
Definition:
attributes.h:64
Generated on Sat Dec 7 2024 19:22:58 for FFmpeg by
1.8.17