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/*
*
* (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#ifndef __LIBSTREAM_H__
#define __LIBSTREAM_H__
#include <sys/types.h>
#include <unistd.h>
struct stream_stat {
off_t st_size;
};
typedef int (*stream_read_sector_t)(void *data,off_t offset, void* buffer, size_t size);
typedef ssize_t (*stream_read_t)(void *data, void *buf, size_t count);
typedef int (*stream_lseek_t)(void *data, long offset, int whence);
typedef int (*stream_close_t)(void *data);
typedef int (*stream_umount_t)(void *data);
typedef int (*stream_fstat_t)(void *data, struct stream_stat *buf);
typedef int (*stream_get_blocksize_t)(void *data);
typedef struct {
void *data;
stream_read_sector_t read_sector;
stream_close_t close;
stream_get_blocksize_t get_blocksize;
} device_io_t;
typedef struct {
void *volume;
void *file;
stream_read_t read;
stream_lseek_t lseek;
stream_close_t close;
stream_umount_t umount;
stream_fstat_t fstat;
} filesystem_io_t;
typedef struct {
/* device interface */
device_io_t device;
/* filesystem interface */
filesystem_io_t fs;
} stream_t;
extern stream_t *stream_open(char *dev);
extern int stream_read_sector(stream_t *stream,
off_t offset, void* buffer, size_t size);
extern int stream_read(stream_t *stream, void *buf, size_t count);
extern int stream_lseek(stream_t *stream, long offset, int whence);
extern int stream_close(stream_t *stream);
extern int stream_uncompress(stream_t *stream);
extern int stream_fstat(stream_t *stream, struct stream_stat *buf);
#endif /* __LIBSTREAM_H__ */
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