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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2006-2007 Dave Chapman
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#ifndef __SANSAIO_H
23#define __SANSAIO_H
24
25#include <stdint.h>
26#if !defined(_MSC_VER)
27#include <unistd.h> /* not available on MSVC */
28#endif
29
30#if defined(__WIN32__) || defined(_WIN32)
31#include <windows.h>
32#define loff_t int64_t
33#else
34#define HANDLE int
35#define O_BINARY 0
36
37/* Only Linux seems to need lseek64 and loff_t */
38#if !defined(linux) && !defined (__linux)
39#define loff_t off_t
40#define lseek64 lseek
41#endif
42
43#endif
44
45#ifdef __cplusplus
46extern "C" {
47#endif
48
49struct sansa_partinfo_t {
50 unsigned long start; /* first sector (LBA) */
51 unsigned long size; /* number of sectors */
52 int type;
53};
54
55struct mi4header_t {
56 uint32_t version;
57 uint32_t length;
58 uint32_t crc32;
59 uint32_t enctype;
60 uint32_t mi4size;
61 uint32_t plaintext;
62};
63
64struct sansa_t {
65 HANDLE dh;
66 unsigned char* sectorbuf;
67 char diskname[4096];
68 int sector_size;
69 struct sansa_partinfo_t pinfo[4];
70 int hasoldbootloader;
71 char* targetname; /* "e200" or "c200" */
72 loff_t start; /* Offset in bytes of firmware partition from start of disk */
73};
74
75void sansa_print_error(char* msg);
76int sansa_open(struct sansa_t* sansa, int silent);
77int sansa_reopen_rw(struct sansa_t* sansa);
78int sansa_close(struct sansa_t* sansa);
79int sansa_seek(struct sansa_t* sansa, loff_t pos);
80int sansa_read(struct sansa_t* sansa, unsigned char* buf, int nbytes);
81int sansa_write(struct sansa_t* sansa, int nbytes);
82int sansa_alloc_buffer(struct sansa_t* sansa, int bufsize);
83int sansa_dealloc_buffer(struct sansa_t* sansa);
84
85#ifdef __cplusplus
86}
87#endif
88#endif