SDL2_gfx: I:/Sources/sdl2gfx/SDL2_framerate.h Source File

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I:/Sources/sdl2gfx/SDL2_framerate.h
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    00001 /*
    00002
    00003 SDL2_framerate.h: framerate manager
    00004
    00005 Copyright (C) 2012  Andreas Schiffler
    00006
    00007 This software is provided 'as-is', without any express or implied
    00008 warranty. In no event will the authors be held liable for any damages
    00009 arising from the use of this software.
    00010
    00011 Permission is granted to anyone to use this software for any purpose,
    00012 including commercial applications, and to alter it and redistribute it
    00013 freely, subject to the following restrictions:
    00014
    00015 1. The origin of this software must not be misrepresented; you must not
    00016 claim that you wrote the original software. If you use this software
    00017 in a product, an acknowledgment in the product documentation would be
    00018 appreciated but is not required.
    00019
    00020 2. Altered source versions must be plainly marked as such, and must not be
    00021 misrepresented as being the original software.
    00022
    00023 3. This notice may not be removed or altered from any source
    00024 distribution.
    00025
    00026 Andreas Schiffler -- aschiffler at ferzkopp dot net
    00027
    00028 */
    00029
    00030 #ifndef _SDL2_framerate_h
    00031 #define _SDL2_framerate_h
    00032
    00033 /* Set up for C function definitions, even when using C++ */
    00034 #ifdef __cplusplus
    00035 extern "C" {
    00036 #endif
    00037
    00038         /* --- */
    00039
    00040 #include "SDL.h"
    00041
    00042         /* --------- Definitions */
    00043
    00047 #define FPS_UPPER_LIMIT         200
    00048
    00052 #define FPS_LOWER_LIMIT         1
    00053
    00057 #define FPS_DEFAULT             30
    00058
    00062         typedef struct {
    00063                 Uint32 framecount;
    00064                 float rateticks;
    00065                 Uint32 baseticks;
    00066                 Uint32 lastticks;
    00067                 Uint32 rate;
    00068         } FPSmanager;
    00069
    00070         /* ---- Function Prototypes */
    00071
    00072 #ifdef _MSC_VER
    00073 #  if defined(DLL_EXPORT) && !defined(LIBSDL2_GFX_DLL_IMPORT)
    00074 #    define SDL2_FRAMERATE_SCOPE __declspec(dllexport)
    00075 #  else
    00076 #    ifdef LIBSDL2_GFX_DLL_IMPORT
    00077 #      define SDL2_FRAMERATE_SCOPE __declspec(dllimport)
    00078 #    endif
    00079 #  endif
    00080 #endif
    00081 #ifndef SDL2_FRAMERATE_SCOPE
    00082 #  define SDL2_FRAMERATE_SCOPE extern
    00083 #endif
    00084
    00085         /* Functions return 0 or value for sucess and -1 for error */
    00086
    00087         SDL2_FRAMERATE_SCOPE void SDL_initFramerate(FPSmanager * manager);
    00088         SDL2_FRAMERATE_SCOPE int SDL_setFramerate(FPSmanager * manager, Uint32 rate);
    00089         SDL2_FRAMERATE_SCOPE int SDL_getFramerate(FPSmanager * manager);
    00090         SDL2_FRAMERATE_SCOPE int SDL_getFramecount(FPSmanager * manager);
    00091         SDL2_FRAMERATE_SCOPE Uint32 SDL_framerateDelay(FPSmanager * manager);
    00092
    00093         /* --- */
    00094
    00095         /* Ends C function definitions when using C++ */
    00096 #ifdef __cplusplus
    00097 }
    00098 #endif
    00099
    00100 #endif                          /* _SDL2_framerate_h */