Mercurial > sdl-ios-xcode

annotate include/SDL_rwops.h @ 3126:395e0c7a78a3 gsoc2009_IME

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Creating GSoC 2009 code branch
author Sam Lantinga <slouken@libsdl.org>
date Sat, 23 May 2009 22:48:40 +0000
parents 99210400e8b9
children 5d7ef5970073
rev   line source
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
2859
99210400e8b9 Updated copyright date
Sam Lantinga <slouken@libsdl.org>
parents: 2161
diff changeset
3 Copyright (C) 1997-2009 Sam Lantinga
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 930
diff changeset
6 modify it under the terms of the GNU Lesser General Public
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 930
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
9
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 930
diff changeset
13 Lesser General Public License for more details.
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
14
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 930
diff changeset
15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 930
diff changeset
16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 930
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
18
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
19 Sam Lantinga
251
b8688cfdc232 Updated the headers with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
20 slouken@libsdl.org
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
21 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
22
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
23 /**
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
24 * \file SDL_rwops.h
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
25 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
26 * This file provides a general interface for SDL to read and write
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
27 * data sources. It can easily be extended to files, memory, etc.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
28 */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
29
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
30 #ifndef _SDL_rwops_h
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
31 #define _SDL_rwops_h
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
32
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
33 #include "SDL_stdinc.h"
1358
c71e05b4dc2e More header massaging... works great on Windows. ;-)
Sam Lantinga <slouken@libsdl.org>
parents: 1356
diff changeset
34 #include "SDL_error.h"
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
35
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
36 #include "begin_code.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
37 /* Set up for C function definitions, even when using C++ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
38 #ifdef __cplusplus
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
39 /* *INDENT-OFF* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
40 extern "C" {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
41 /* *INDENT-ON* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
42 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
43
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
44 /* This is the read/write operation structure -- very basic */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
45
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
46 typedef struct SDL_RWops
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
47 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
48 /* Seek to 'offset' relative to whence, one of stdio's whence values:
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
49 RW_SEEK_SET, RW_SEEK_CUR, RW_SEEK_END
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
50 Returns the final offset in the data source.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
51 */
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
52 long (SDLCALL * seek) (struct SDL_RWops * context, long offset,
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
53 int whence);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
54
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
55 /* Read up to 'num' objects each of size 'objsize' from the data
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
56 source to the area pointed at by 'ptr'.
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
57 Returns the number of objects read, or 0 at error or end of file.
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
58 */
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
59 size_t(SDLCALL * read) (struct SDL_RWops * context, void *ptr,
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
60 size_t size, size_t maxnum);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
61
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
62 /* Write exactly 'num' objects each of size 'objsize' from the area
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
63 pointed at by 'ptr' to data source.
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
64 Returns the number of objects written, or 0 at error or end of file.
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
65 */
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
66 size_t(SDLCALL * write) (struct SDL_RWops * context, const void *ptr,
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
67 size_t size, size_t num);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
68
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
69 /* Close and free an allocated SDL_RWops structure.
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
70 Returns 0 if successful or -1 on write error when flushing data.
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
71 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
72 int (SDLCALL * close) (struct SDL_RWops * context);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
73
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
74 Uint32 type;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
75 union
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
76 {
1447
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops
Sam Lantinga <slouken@libsdl.org>
parents: 1446
diff changeset
77 #ifdef __WIN32__
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
78 struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
79 {
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
80 SDL_bool append;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
81 void *h;
2159
dd4753e47ed4 Merged read-ahead support for Win32 file I/O from SDL 1.2 revision 3183
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
82 struct
dd4753e47ed4 Merged read-ahead support for Win32 file I/O from SDL 1.2 revision 3183
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
83 {
dd4753e47ed4 Merged read-ahead support for Win32 file I/O from SDL 1.2 revision 3183
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
84 void *data;
dd4753e47ed4 Merged read-ahead support for Win32 file I/O from SDL 1.2 revision 3183
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
85 int size;
dd4753e47ed4 Merged read-ahead support for Win32 file I/O from SDL 1.2 revision 3183
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
86 int left;
dd4753e47ed4 Merged read-ahead support for Win32 file I/O from SDL 1.2 revision 3183
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
87 } buffer;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
88 } win32io;
1447
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops
Sam Lantinga <slouken@libsdl.org>
parents: 1446
diff changeset
89 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
90 #ifdef HAVE_STDIO_H
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
91 struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
92 {
2160
00adbaed3910 Updated to use size_t instead of int for amounts of data.
Sam Lantinga <slouken@libsdl.org>
parents: 2159
diff changeset
93 SDL_bool autoclose;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
94 FILE *fp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
95 } stdio;
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
96 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
97 struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
98 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
99 Uint8 *base;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
100 Uint8 *here;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
101 Uint8 *stop;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
102 } mem;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
103 struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
104 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
105 void *data1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
106 } unknown;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
107 } hidden;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
108
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
109 } SDL_RWops;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
110
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
111
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
112 /* Functions to create SDL_RWops structures from various data sources */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
113
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
114 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFile(const char *file,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
115 const char *mode);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
116
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
117 #ifdef HAVE_STDIO_H
2161
e635db5b45ef Oh yeah, they're boolean values...
Sam Lantinga <slouken@libsdl.org>
parents: 2160
diff changeset
118 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(FILE * fp,
e635db5b45ef Oh yeah, they're boolean values...
Sam Lantinga <slouken@libsdl.org>
parents: 2160
diff changeset
119 SDL_bool autoclose);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
120 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
121
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
122 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromMem(void *mem, int size);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
123 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromConstMem(const void *mem,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
124 int size);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
125
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
126 extern DECLSPEC SDL_RWops *SDLCALL SDL_AllocRW(void);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
127 extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops * area);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
128
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
129 #define RW_SEEK_SET 0 /* Seek from the beginning of data */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
130 #define RW_SEEK_CUR 1 /* Seek relative to current read point */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
131 #define RW_SEEK_END 2 /* Seek relative to the end of data */
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
132
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
133 /* Macros to easily read and write from an SDL_RWops structure */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
134 #define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence)
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
135 #define SDL_RWtell(ctx) (ctx)->seek(ctx, 0, RW_SEEK_CUR)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
136 #define SDL_RWread(ctx, ptr, size, n) (ctx)->read(ctx, ptr, size, n)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
137 #define SDL_RWwrite(ctx, ptr, size, n) (ctx)->write(ctx, ptr, size, n)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
138 #define SDL_RWclose(ctx) (ctx)->close(ctx)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
139
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
140
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
141 /* Read an item of the specified endianness and return in native format */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
142 extern DECLSPEC Uint16 SDLCALL SDL_ReadLE16(SDL_RWops * src);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
143 extern DECLSPEC Uint16 SDLCALL SDL_ReadBE16(SDL_RWops * src);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
144 extern DECLSPEC Uint32 SDLCALL SDL_ReadLE32(SDL_RWops * src);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
145 extern DECLSPEC Uint32 SDLCALL SDL_ReadBE32(SDL_RWops * src);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
146 extern DECLSPEC Uint64 SDLCALL SDL_ReadLE64(SDL_RWops * src);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
147 extern DECLSPEC Uint64 SDLCALL SDL_ReadBE64(SDL_RWops * src);
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
148
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
149 /* Write an item of native format to the specified endianness */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
150 extern DECLSPEC int SDLCALL SDL_WriteLE16(SDL_RWops * dst, Uint16 value);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
151 extern DECLSPEC int SDLCALL SDL_WriteBE16(SDL_RWops * dst, Uint16 value);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
152 extern DECLSPEC int SDLCALL SDL_WriteLE32(SDL_RWops * dst, Uint32 value);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
153 extern DECLSPEC int SDLCALL SDL_WriteBE32(SDL_RWops * dst, Uint32 value);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
154 extern DECLSPEC int SDLCALL SDL_WriteLE64(SDL_RWops * dst, Uint64 value);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
155 extern DECLSPEC int SDLCALL SDL_WriteBE64(SDL_RWops * dst, Uint64 value);
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
156
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
157
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
158 /* Ends C function definitions when using C++ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
159 #ifdef __cplusplus
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
160 /* *INDENT-OFF* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
161 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
162 /* *INDENT-ON* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
163 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164 #include "close_code.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
165
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
166 #endif /* _SDL_rwops_h */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
167
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1453
diff changeset
168 /* vi: set ts=4 sw=4 expandtab: */