io.h

00001 /*
00002  * libopenraw - io.h
00003  *
00004  * Copyright (C) 2005 Hubert Figuiere
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  */
00020 
00021 #ifndef __LIBOPENRAW_IO_H
00022 #define __LIBOPENRAW_IO_H
00023 
00024 #include <sys/types.h>
00025 #include <unistd.h>
00026 #include <fcntl.h>
00027 
00028 #ifdef __cplusplus
00029 extern "C" {
00030 #endif
00031 
00032 
00034 typedef struct _IOFile *IOFileRef;
00035     
00036     
00038 struct io_methods {
00042     IOFileRef (*open)(const char *path, int mode);
00044     int (*close) (IOFileRef f);
00046     int (*seek) (IOFileRef f, off_t offset, int whence);
00048     int (*read) (IOFileRef f, void *buf, size_t count);
00049 
00050     off_t (*filesize) (IOFileRef f);
00051     void* (*mmap) (IOFileRef f, size_t l, off_t offset);
00052     int   (*munmap) (IOFileRef f, void *addr, size_t l);
00053 };
00054 
00055 extern struct io_methods* get_default_io_methods(void);
00056 
00057 extern IOFileRef raw_open(struct io_methods * methods, const char *path, 
00058                   int mode);
00059 extern int raw_close(IOFileRef f);
00060 extern int raw_seek(IOFileRef f, off_t offset, int whence);
00061 extern int raw_read(IOFileRef f, void *buf, size_t count);
00062 extern off_t raw_filesize(IOFileRef f);
00063 extern void *raw_mmap(IOFileRef f, size_t l, off_t offset);
00064 extern int raw_munmap(IOFileRef f, void *addr, size_t l);
00065 
00066 extern int raw_get_error(IOFileRef f);
00067 extern char *raw_get_path(IOFileRef f);
00068 
00069 
00070 #ifdef __cplusplus
00071 }
00072 #endif
00073 
00074 
00075 
00076 #endif

Generated on Sat Jan 27 11:36:13 2007 for libopenraw by  doxygen 1.4.7