2011-02-18 14:31:32 +00:00
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/*
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SDL - Simple DirectMedia Layer
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2012-09-15 03:03:44 +00:00
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Copyright (C) 1997-2012 Sam Lantinga
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2011-02-18 14:31:32 +00:00
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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/**
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* @file begin_code.h
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* This file sets things up for C dynamic library function definitions,
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* static inlined functions, and structures aligned at 4-byte alignment.
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* If you don't like ugly C preprocessor code, don't look at this file. :)
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*/
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/**
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* @file begin_code.h
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* This shouldn't be nested -- included it around code only.
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*/
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#ifdef _begin_code_h
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#error Nested inclusion of begin_code.h
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#endif
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#define _begin_code_h
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/**
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* @def DECLSPEC
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* Some compilers use a special export keyword
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*/
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#ifndef DECLSPEC
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# if defined(__BEOS__) || defined(__HAIKU__)
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# if defined(__GNUC__)
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2012-09-15 03:03:44 +00:00
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# define DECLSPEC
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2011-02-18 14:31:32 +00:00
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# else
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# define DECLSPEC __declspec(export)
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# endif
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# elif defined(__WIN32__)
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# ifdef __BORLANDC__
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# ifdef BUILD_SDL
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# define DECLSPEC
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# else
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# define DECLSPEC __declspec(dllimport)
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# endif
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# else
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# define DECLSPEC __declspec(dllexport)
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# endif
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# elif defined(__OS2__)
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# ifdef __WATCOMC__
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# ifdef BUILD_SDL
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# define DECLSPEC __declspec(dllexport)
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# else
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# define DECLSPEC
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# endif
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# elif defined (__GNUC__) && __GNUC__ < 4
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# /* Added support for GCC-EMX <v4.x */
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# /* this is needed for XFree86/OS2 developement */
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# /* F. Ambacher(anakor@snafu.de) 05.2008 */
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# ifdef BUILD_SDL
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# define DECLSPEC __declspec(dllexport)
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# else
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# define DECLSPEC
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# endif
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# else
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# define DECLSPEC
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# endif
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# else
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# if defined(__GNUC__) && __GNUC__ >= 4
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# define DECLSPEC __attribute__ ((visibility("default")))
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# else
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# define DECLSPEC
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# endif
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# endif
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#endif
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/**
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* @def SDLCALL
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* By default SDL uses the C calling convention
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*/
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#ifndef SDLCALL
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# if defined(__WIN32__) && !defined(__GNUC__)
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# define SDLCALL __cdecl
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# elif defined(__OS2__)
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# if defined (__GNUC__) && __GNUC__ < 4
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# /* Added support for GCC-EMX <v4.x */
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# /* this is needed for XFree86/OS2 developement */
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# /* F. Ambacher(anakor@snafu.de) 05.2008 */
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# define SDLCALL _cdecl
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# else
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# /* On other compilers on OS/2, we use the _System calling convention */
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# /* to be compatible with every compiler */
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# define SDLCALL _System
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# endif
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# else
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# define SDLCALL
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# endif
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#endif /* SDLCALL */
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#ifdef __SYMBIAN32__
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#ifndef EKA2
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#undef DECLSPEC
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#define DECLSPEC
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#elif !defined(__WINS__)
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#undef DECLSPEC
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#define DECLSPEC __declspec(dllexport)
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#endif /* !EKA2 */
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#endif /* __SYMBIAN32__ */
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/**
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* @file begin_code.h
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* Force structure packing at 4 byte alignment.
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* This is necessary if the header is included in code which has structure
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* packing set to an alternate value, say for loading structures from disk.
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* The packing is reset to the previous value in close_code.h
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*/
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#if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__)
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#ifdef _MSC_VER
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#pragma warning(disable: 4103)
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#endif
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#ifdef __BORLANDC__
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#pragma nopackwarning
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#endif
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2012-09-15 03:03:44 +00:00
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#ifdef _M_X64
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/* Use 8-byte alignment on 64-bit architectures, so pointers are aligned */
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#pragma pack(push,8)
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#else
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2011-02-18 14:31:32 +00:00
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#pragma pack(push,4)
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2012-09-15 03:03:44 +00:00
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#endif
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2011-02-18 14:31:32 +00:00
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#elif (defined(__MWERKS__) && defined(__MACOS__))
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#pragma options align=mac68k4byte
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#pragma enumsalwaysint on
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#endif /* Compiler needs structure packing set */
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/**
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* @def SDL_INLINE_OKAY
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* Set up compiler-specific options for inlining functions
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*/
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#ifndef SDL_INLINE_OKAY
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#ifdef __GNUC__
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#define SDL_INLINE_OKAY
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#else
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/* Add any special compiler-specific cases here */
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#if defined(_MSC_VER) || defined(__BORLANDC__) || \
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defined(__DMC__) || defined(__SC__) || \
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defined(__WATCOMC__) || defined(__LCC__) || \
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defined(__DECC) || defined(__EABI__)
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#ifndef __inline__
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#define __inline__ __inline
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#endif
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#define SDL_INLINE_OKAY
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#else
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#if !defined(__MRC__) && !defined(_SGI_SOURCE)
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#ifndef __inline__
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#define __inline__ inline
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#endif
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#define SDL_INLINE_OKAY
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#endif /* Not a funky compiler */
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#endif /* Visual C++ */
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#endif /* GNU C */
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#endif /* SDL_INLINE_OKAY */
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/**
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* @def __inline__
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* If inlining isn't supported, remove "__inline__", turning static
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* inlined functions into static functions (resulting in code bloat
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* in all files which include the offending header files)
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*/
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#ifndef SDL_INLINE_OKAY
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#define __inline__
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#endif
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/**
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* @def NULL
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* Apparently this is needed by several Windows compilers
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*/
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#if !defined(__MACH__)
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#ifndef NULL
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#ifdef __cplusplus
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#define NULL 0
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#else
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#define NULL ((void *)0)
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#endif
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#endif /* NULL */
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#endif /* ! Mac OS X - breaks precompiled headers */
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