1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/* Copyright (C) 2010-2015 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (dir_list.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __LIBRETRO_SDK_NBIO_H
#define __LIBRETRO_SDK_NBIO_H
#include <stddef.h>
#include <boolean.h>
#ifndef NBIO_READ
#define NBIO_READ 0
#endif
#ifndef NBIO_WRITE
#define NBIO_WRITE 1
#endif
#ifndef NBIO_UPDATE
#define NBIO_UPDATE 2
#endif
#ifndef BIO_READ
#define BIO_READ 3
#endif
#ifndef BIO_WRITE
#define BIO_WRITE 4
#endif
struct nbio_t;
/*
* Creates an nbio structure for performing the given operation on the given file.
*/
struct nbio_t* nbio_open(const char * filename, unsigned mode);
/*
* Starts reading the given file. When done, it will be available in nbio_get_ptr.
* Can not be done if the structure was created with nbio_write.
*/
void nbio_begin_read(struct nbio_t* handle);
/*
* Starts writing to the given file. Before this, you should've copied the data to nbio_get_ptr.
* Can not be done if the structure was created with nbio_read.
*/
void nbio_begin_write(struct nbio_t* handle);
/*
* Performs part of the requested operation, or checks how it's going.
* When it returns true, it's done.
*/
bool nbio_iterate(struct nbio_t* handle);
/*
* Resizes the file up to the given size; cannot shrink.
* Can not be done if the structure was created with nbio_read.
*/
void nbio_resize(struct nbio_t* handle, size_t len);
/*
* Returns a pointer to the file data. Writable only if structure was not created with nbio_read.
* If any operation is in progress, the pointer will be NULL, but len will still be correct.
*/
void* nbio_get_ptr(struct nbio_t* handle, size_t* len);
/*
* Stops any pending operation, allowing the object to be freed.
*/
void nbio_cancel(struct nbio_t* handle);
/*
* Deletes the nbio structure and its associated pointer.
*/
void nbio_free(struct nbio_t* handle);
#endif
|
