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/*
*
* (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include "device.h"
#define SECTOR_SIZE (2048)
#define ISO_BLOCKS(X) (((X) / SECTOR_SIZE) + (((X)%SECTOR_SIZE)?1:0))
static const char *filename = "/dev/cdrom";
int device_read_sector(void *data,off_t offset, void* buffer, size_t size)
{
FILE* file = (FILE*)data;
lseek(fileno(file), offset << 11, SEEK_SET);
return read(fileno(file), buffer, ISO_BLOCKS(size) << 11);
}
void device_close(void *data)
{
FILE* file = (FILE*)data;
if (file)
fclose(file);
}
FILE *device_open(void)
{
FILE* file;
file = fopen(filename, "rb");
if (file == NULL)
return NULL;
return file;
}
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