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-rw-r--r--distrib/sdl-1.2.15/include/SDL_rwops.h155
1 files changed, 155 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/include/SDL_rwops.h b/distrib/sdl-1.2.15/include/SDL_rwops.h
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+++ b/distrib/sdl-1.2.15/include/SDL_rwops.h
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+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2012 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+
+/** @file SDL_rwops.h
+ * 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 "SDL_stdinc.h"
+#include "SDL_error.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 (SDLCALL *seek)(struct SDL_RWops *context, int offset, int whence);
+
+ /** Read up to 'maxnum' objects each of size 'size' from the data
+ * source to the area pointed at by 'ptr'.
+ * Returns the number of objects read, or -1 if the read failed.
+ */
+ int (SDLCALL *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 (SDLCALL *write)(struct SDL_RWops *context, const void *ptr, int size, int num);
+
+ /** Close and free an allocated SDL_FSops structure */
+ int (SDLCALL *close)(struct SDL_RWops *context);
+
+ Uint32 type;
+ union {
+#if defined(__WIN32__) && !defined(__SYMBIAN32__)
+ struct {
+ int append;
+ void *h;
+ struct {
+ void *data;
+ int size;
+ int left;
+ } buffer;
+ } win32io;
+#endif
+#ifdef HAVE_STDIO_H
+ struct {
+ int autoclose;
+ FILE *fp;
+ } stdio;
+#endif
+ struct {
+ Uint8 *base;
+ Uint8 *here;
+ Uint8 *stop;
+ } mem;
+ struct {
+ void *data1;
+ } unknown;
+ } hidden;
+
+} SDL_RWops;
+
+
+/** @name Functions to create SDL_RWops structures from various data sources */
+/*@{*/
+
+extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromFile(const char *file, const char *mode);
+
+#ifdef HAVE_STDIO_H
+extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromFP(FILE *fp, int autoclose);
+#endif
+
+extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromMem(void *mem, int size);
+extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromConstMem(const void *mem, int size);
+
+extern DECLSPEC SDL_RWops * SDLCALL SDL_AllocRW(void);
+extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops *area);
+
+/*@}*/
+
+/** @name Seek Reference Points */
+/*@{*/
+#define RW_SEEK_SET 0 /**< Seek from the beginning of data */
+#define RW_SEEK_CUR 1 /**< Seek relative to current read point */
+#define RW_SEEK_END 2 /**< Seek relative to the end of data */
+/*@}*/
+
+/** @name 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, RW_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)
+/*@}*/
+
+/** @name Read an item of the specified endianness and return in native format */
+/*@{*/
+extern DECLSPEC Uint16 SDLCALL SDL_ReadLE16(SDL_RWops *src);
+extern DECLSPEC Uint16 SDLCALL SDL_ReadBE16(SDL_RWops *src);
+extern DECLSPEC Uint32 SDLCALL SDL_ReadLE32(SDL_RWops *src);
+extern DECLSPEC Uint32 SDLCALL SDL_ReadBE32(SDL_RWops *src);
+extern DECLSPEC Uint64 SDLCALL SDL_ReadLE64(SDL_RWops *src);
+extern DECLSPEC Uint64 SDLCALL SDL_ReadBE64(SDL_RWops *src);
+/*@}*/
+
+/** @name Write an item of native format to the specified endianness */
+/*@{*/
+extern DECLSPEC int SDLCALL SDL_WriteLE16(SDL_RWops *dst, Uint16 value);
+extern DECLSPEC int SDLCALL SDL_WriteBE16(SDL_RWops *dst, Uint16 value);
+extern DECLSPEC int SDLCALL SDL_WriteLE32(SDL_RWops *dst, Uint32 value);
+extern DECLSPEC int SDLCALL SDL_WriteBE32(SDL_RWops *dst, Uint32 value);
+extern DECLSPEC int SDLCALL SDL_WriteLE64(SDL_RWops *dst, Uint64 value);
+extern DECLSPEC int SDLCALL SDL_WriteBE64(SDL_RWops *dst, Uint64 value);
+/*@}*/
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_rwops_h */