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https://github.com/Kiritow/MiniEngine.git
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101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
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/*
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SDL2_framerate.h: framerate manager
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Copyright (C) 2012 Andreas Schiffler
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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Andreas Schiffler -- aschiffler at ferzkopp dot net
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*/
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#ifndef _SDL2_framerate_h
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#define _SDL2_framerate_h
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* --- */
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#include "SDL2/SDL.h"
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/* --------- Definitions */
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/*!
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\brief Highest possible rate supported by framerate controller in Hz (1/s).
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*/
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#define FPS_UPPER_LIMIT 200
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/*!
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\brief Lowest possible rate supported by framerate controller in Hz (1/s).
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*/
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#define FPS_LOWER_LIMIT 1
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/*!
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\brief Default rate of framerate controller in Hz (1/s).
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*/
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#define FPS_DEFAULT 30
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/*!
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\brief Structure holding the state and timing information of the framerate controller.
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*/
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typedef struct {
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Uint32 framecount;
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float rateticks;
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Uint32 baseticks;
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Uint32 lastticks;
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Uint32 rate;
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} FPSmanager;
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/* ---- Function Prototypes */
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#ifdef _MSC_VER
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# if defined(DLL_EXPORT) && !defined(LIBSDL2_GFX_DLL_IMPORT)
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# define SDL2_FRAMERATE_SCOPE __declspec(dllexport)
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# else
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# ifdef LIBSDL2_GFX_DLL_IMPORT
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# define SDL2_FRAMERATE_SCOPE __declspec(dllimport)
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# endif
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# endif
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#endif
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#ifndef SDL2_FRAMERATE_SCOPE
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# define SDL2_FRAMERATE_SCOPE extern
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#endif
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/* Functions return 0 or value for sucess and -1 for error */
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SDL2_FRAMERATE_SCOPE void SDL_initFramerate(FPSmanager * manager);
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SDL2_FRAMERATE_SCOPE int SDL_setFramerate(FPSmanager * manager, Uint32 rate);
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SDL2_FRAMERATE_SCOPE int SDL_getFramerate(FPSmanager * manager);
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SDL2_FRAMERATE_SCOPE int SDL_getFramecount(FPSmanager * manager);
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SDL2_FRAMERATE_SCOPE Uint32 SDL_framerateDelay(FPSmanager * manager);
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/* --- */
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SDL2_framerate_h */
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