WebSVN – Kolibri OS – Diff – /contrib/sdk/sources/SDL-1.2.2_newlib/include/SDL_rwops.h


/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    Sam Lantinga
    slouken@devolution.com
*/
 
#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id: SDL_rwops.h,v 1.2 2001/04/26 16:50:17 hercules Exp $";
#endif
 
/* This file provides a general interface for SDL to read and write
   data sources.  It can easily be extended to files, memory, etc.
*/
 
#ifndef _SDL_RWops_h
#define _SDL_RWops_h
 
#include 
 
#include "SDL_types.h"
 
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
 
/* This is the read/write operation structure -- very basic */
 
typedef struct SDL_RWops {
	/* Seek to 'offset' relative to whence, one of stdio's whence values:
		SEEK_SET, SEEK_CUR, SEEK_END
	   Returns the final offset in the data source.
	 */
	int (*seek)(struct SDL_RWops *context, int offset, int whence);
 
	/* Read up to 'num' objects each of size 'objsize' from the data
	   source to the area pointed at by 'ptr'.
	   Returns the number of objects read, or -1 if the read failed.
	 */
	int (*read)(struct SDL_RWops *context, void *ptr, int size, int maxnum);
 
	/* Write exactly 'num' objects each of size 'objsize' from the area
	   pointed at by 'ptr' to data source.
	   Returns 'num', or -1 if the write failed.
	 */
	int (*write)(struct SDL_RWops *context, const void *ptr, int size, int num);
 
	/* Close and free an allocated SDL_FSops structure */
	int (*close)(struct SDL_RWops *context);
 
	Uint32 type;
	union {
	    struct {
		int autoclose;
	 	FILE *fp;
	    } stdio;
	    struct {
		Uint8 *base;
	 	Uint8 *here;
		Uint8 *stop;
	    } mem;
	    struct {
		void *data1;
	    } unknown;
	} hidden;
 
} SDL_RWops;
 
 
/* Functions to create SDL_RWops structures from various data sources */
 
extern DECLSPEC SDL_RWops * SDL_RWFromFile(const char *file, const char *mode);
 
extern DECLSPEC SDL_RWops * SDL_RWFromFP(FILE *fp, int autoclose);
 
extern DECLSPEC SDL_RWops * SDL_RWFromMem(void *mem, int size);
 
extern DECLSPEC SDL_RWops * SDL_AllocRW(void);
extern DECLSPEC void SDL_FreeRW(SDL_RWops *area);
 
#define RW_SEEK_SET	SEEK_SET	/**< Seek from the beginning of data */
#define RW_SEEK_CUR	SEEK_CUR	/**< Seek relative to current read point */
#define RW_SEEK_END	SEEK_END	/**< Seek relative to the end of data */
 
/* Macros to easily read and write from an SDL_RWops structure */
#define SDL_RWseek(ctx, offset, whence)	(ctx)->seek(ctx, offset, whence)
#define SDL_RWtell(ctx)			(ctx)->seek(ctx, 0, SEEK_CUR)
#define SDL_RWread(ctx, ptr, size, n)	(ctx)->read(ctx, ptr, size, n)
#define SDL_RWwrite(ctx, ptr, size, n)	(ctx)->write(ctx, ptr, size, n)
#define SDL_RWclose(ctx)		(ctx)->close(ctx)
 
 
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
 
#endif /* _SDL_RWops_h */

Rev 8209	Rev 9561
1	/*	1	/*
2	SDL - Simple DirectMedia Layer	2	SDL - Simple DirectMedia Layer
3	Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga	3	Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4		4
5	This library is free software; you can redistribute it and/or	5	This library is free software; you can redistribute it and/or
6	modify it under the terms of the GNU Library General Public	6	modify it under the terms of the GNU Library General Public
7	License as published by the Free Software Foundation; either	7	License as published by the Free Software Foundation; either
8	version 2 of the License, or (at your option) any later version.	8	version 2 of the License, or (at your option) any later version.
9		9
10	This library is distributed in the hope that it will be useful,	10	This library is distributed in the hope that it will be useful,
11	but WITHOUT ANY WARRANTY; without even the implied warranty of	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13	Library General Public License for more details.	13	Library General Public License for more details.
14		14
15	You should have received a copy of the GNU Library General Public	15	You should have received a copy of the GNU Library General Public
16	License along with this library; if not, write to the Free	16	License along with this library; if not, write to the Free
17	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA	17	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18		18
19	Sam Lantinga	19	Sam Lantinga
20	slouken@devolution.com	20	slouken@devolution.com
21	*/	21	*/
22		22
23	#ifdef SAVE_RCSID	23	#ifdef SAVE_RCSID
24	static char rcsid =	24	static char rcsid =
25	"@(#) $Id: SDL_rwops.h,v 1.2 2001/04/26 16:50:17 hercules Exp $";	25	"@(#) $Id: SDL_rwops.h,v 1.2 2001/04/26 16:50:17 hercules Exp $";
26	#endif	26	#endif
27		27
28	/* This file provides a general interface for SDL to read and write	28	/* This file provides a general interface for SDL to read and write
29	data sources. It can easily be extended to files, memory, etc.	29	data sources. It can easily be extended to files, memory, etc.
30	*/	30	*/
31		31
32	#ifndef _SDL_RWops_h	32	#ifndef _SDL_RWops_h
33	#define _SDL_RWops_h	33	#define _SDL_RWops_h
34		34
35	#include	35	#include
36		36
37	#include "SDL_types.h"	37	#include "SDL_types.h"
38		38
39	#include "begin_code.h"	39	#include "begin_code.h"
40	/* Set up for C function definitions, even when using C++ */	40	/* Set up for C function definitions, even when using C++ */
41	#ifdef __cplusplus	41	#ifdef __cplusplus
42	extern "C" {	42	extern "C" {
43	#endif	43	#endif
44		44
45	/* This is the read/write operation structure -- very basic */	45	/* This is the read/write operation structure -- very basic */
46		46
47	typedef struct SDL_RWops {	47	typedef struct SDL_RWops {
48	/* Seek to 'offset' relative to whence, one of stdio's whence values:	48	/* Seek to 'offset' relative to whence, one of stdio's whence values:
49	SEEK_SET, SEEK_CUR, SEEK_END	49	SEEK_SET, SEEK_CUR, SEEK_END
50	Returns the final offset in the data source.	50	Returns the final offset in the data source.
51	*/	51	*/
52	int (seek)(struct SDL_RWops context, int offset, int whence);	52	int (seek)(struct SDL_RWops context, int offset, int whence);
53		53
54	/* Read up to 'num' objects each of size 'objsize' from the data	54	/* Read up to 'num' objects each of size 'objsize' from the data
55	source to the area pointed at by 'ptr'.	55	source to the area pointed at by 'ptr'.
56	Returns the number of objects read, or -1 if the read failed.	56	Returns the number of objects read, or -1 if the read failed.
57	*/	57	*/
58	int (read)(struct SDL_RWops context, void *ptr, int size, int maxnum);	58	int (read)(struct SDL_RWops context, void *ptr, int size, int maxnum);
59		59
60	/* Write exactly 'num' objects each of size 'objsize' from the area	60	/* Write exactly 'num' objects each of size 'objsize' from the area
61	pointed at by 'ptr' to data source.	61	pointed at by 'ptr' to data source.
62	Returns 'num', or -1 if the write failed.	62	Returns 'num', or -1 if the write failed.
63	*/	63	*/
64	int (write)(struct SDL_RWops context, const void *ptr, int size, int num);	64	int (write)(struct SDL_RWops context, const void *ptr, int size, int num);
65		65
66	/* Close and free an allocated SDL_FSops structure */	66	/* Close and free an allocated SDL_FSops structure */
67	int (close)(struct SDL_RWops context);	67	int (close)(struct SDL_RWops context);
68		68
69	Uint32 type;	69	Uint32 type;
70	union {	70	union {
71	struct {	71	struct {
72	int autoclose;	72	int autoclose;
73	FILE *fp;	73	FILE *fp;
74	} stdio;	74	} stdio;
75	struct {	75	struct {
76	Uint8 *base;	76	Uint8 *base;
77	Uint8 *here;	77	Uint8 *here;
78	Uint8 *stop;	78	Uint8 *stop;
79	} mem;	79	} mem;
80	struct {	80	struct {
81	void *data1;	81	void *data1;
82	} unknown;	82	} unknown;
83	} hidden;	83	} hidden;
84		84
85	} SDL_RWops;	85	} SDL_RWops;
86		86
87		87
88	/* Functions to create SDL_RWops structures from various data sources */	88	/* Functions to create SDL_RWops structures from various data sources */
89		89
90	extern DECLSPEC SDL_RWops * SDL_RWFromFile(const char file, const char mode);	90	extern DECLSPEC SDL_RWops * SDL_RWFromFile(const char file, const char mode);
91		91
92	extern DECLSPEC SDL_RWops * SDL_RWFromFP(FILE *fp, int autoclose);	92	extern DECLSPEC SDL_RWops * SDL_RWFromFP(FILE *fp, int autoclose);
93		93
94	extern DECLSPEC SDL_RWops * SDL_RWFromMem(void *mem, int size);	94	extern DECLSPEC SDL_RWops * SDL_RWFromMem(void *mem, int size);
95		95
96	extern DECLSPEC SDL_RWops * SDL_AllocRW(void);	96	extern DECLSPEC SDL_RWops * SDL_AllocRW(void);
97	extern DECLSPEC void SDL_FreeRW(SDL_RWops *area);	97	extern DECLSPEC void SDL_FreeRW(SDL_RWops *area);
-		98
-		99	#define RW_SEEK_SET SEEK_SET /*< Seek from the beginning of data /
-		100	#define RW_SEEK_CUR SEEK_CUR /*< Seek relative to current read point /
-		101	#define RW_SEEK_END SEEK_END /*< Seek relative to the end of data /
98		102
99	/* Macros to easily read and write from an SDL_RWops structure */	103	/* Macros to easily read and write from an SDL_RWops structure */
100	#define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence)	104	#define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence)
101	#define SDL_RWtell(ctx) (ctx)->seek(ctx, 0, SEEK_CUR)	105	#define SDL_RWtell(ctx) (ctx)->seek(ctx, 0, SEEK_CUR)
102	#define SDL_RWread(ctx, ptr, size, n) (ctx)->read(ctx, ptr, size, n)	106	#define SDL_RWread(ctx, ptr, size, n) (ctx)->read(ctx, ptr, size, n)
103	#define SDL_RWwrite(ctx, ptr, size, n) (ctx)->write(ctx, ptr, size, n)	107	#define SDL_RWwrite(ctx, ptr, size, n) (ctx)->write(ctx, ptr, size, n)
104	#define SDL_RWclose(ctx) (ctx)->close(ctx)	108	#define SDL_RWclose(ctx) (ctx)->close(ctx)
105		109
106		110
107	/* Ends C function definitions when using C++ */	111	/* Ends C function definitions when using C++ */
108	#ifdef __cplusplus	112	#ifdef __cplusplus
109	}	113	}
110	#endif	114	#endif
111	#include "close_code.h"	115	#include "close_code.h"
112		116
113	#endif /* _SDL_RWops_h */	117	#endif /* _SDL_RWops_h */

Subversion Repositories Kolibri OS

(root)/contrib/sdk/sources/SDL-1.2.2_newlib/include/SDL_rwops.h – Rev 8209 → 9561