mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-28 03:44:07 +00:00
72 lines
2.6 KiB
C
72 lines
2.6 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef AVUTIL_FILE_H
|
||
|
|
#define AVUTIL_FILE_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#include "avutil.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
* Misc file utilities.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read the file with name filename, and put its content in a newly
|
||
|
|
* allocated buffer or map it with mmap() when available.
|
||
|
|
* In case of success set *bufptr to the read or mmapped buffer, and
|
||
|
|
* *size to the size in bytes of the buffer in *bufptr.
|
||
|
|
* Unlike mmap this function succeeds with zero sized files, in this
|
||
|
|
* case *bufptr will be set to NULL and *size will be set to 0.
|
||
|
|
* The returned buffer must be released with av_file_unmap().
|
||
|
|
*
|
||
|
|
* @param log_offset loglevel offset used for logging
|
||
|
|
* @param log_ctx context used for logging
|
||
|
|
* @return a non negative number in case of success, a negative value
|
||
|
|
* corresponding to an AVERROR error code in case of failure
|
||
|
|
*/
|
||
|
|
av_warn_unused_result
|
||
|
|
int av_file_map(const char *filename, uint8_t **bufptr, size_t *size,
|
||
|
|
int log_offset, void *log_ctx);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Unmap or free the buffer bufptr created by av_file_map().
|
||
|
|
*
|
||
|
|
* @param size size in bytes of bufptr, must be the same as returned
|
||
|
|
* by av_file_map()
|
||
|
|
*/
|
||
|
|
void av_file_unmap(uint8_t *bufptr, size_t size);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Wrapper to work around the lack of mkstemp() on mingw.
|
||
|
|
* Also, tries to create file in /tmp first, if possible.
|
||
|
|
* *prefix can be a character constant; *filename will be allocated internally.
|
||
|
|
* @return file descriptor of opened file (or negative value corresponding to an
|
||
|
|
* AVERROR code on error)
|
||
|
|
* and opened file name in **filename.
|
||
|
|
* @note On very old libcs it is necessary to set a secure umask before
|
||
|
|
* calling this, av_tempfile() can't call umask itself as it is used in
|
||
|
|
* libraries and could interfere with the calling application.
|
||
|
|
* @deprecated as fd numbers cannot be passed saftely between libs on some platforms
|
||
|
|
*/
|
||
|
|
int av_tempfile(const char *prefix, char **filename, int log_offset, void *log_ctx);
|
||
|
|
|
||
|
|
#endif /* AVUTIL_FILE_H */
|