libavutil/file.c File Reference

#include "file.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>

Go to the source code of this file.

Data Structures
struct	FileLogContext
Functions
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() when available.
void	av_file_unmap (uint8_t *bufptr, size_t size)
	Unmap or free the buffer bufptr created by av_file_map().
Variables
static const AVClass	file_log_ctx_class

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Function Documentation

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() 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. The returned buffer must be released with av_file_unmap().

Parameters:

	log_offset	loglevel offset used for logging
	log_ctx	context used for logging

Returns:

a non negative number in case of success, a negative value corresponding to an AVERROR error code in case of failure

Definition at line 41 of file file.c.

Referenced by init(), and read_shape_from_file().

void av_file_unmap	(	uint8_t *	bufptr,
		size_t	size
	)

Unmap or free the buffer bufptr created by av_file_map().

Parameters:

size

size in bytes of bufptr, must be the same as returned by av_file_map()

Definition at line 121 of file file.c.

Referenced by init(), and read_shape_from_file().

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Variable Documentation

const AVClass file_log_ctx_class [static]

Initial value:

 {
    "FILE", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT,
    0x42, 0x42
}

Definition at line 36 of file file.c.