1 files changed, 103 insertions, 0 deletions
diff --git a/src/sdl2gfx/SDL2_framerate.h b/src/sdl2gfx/SDL2_framerate.h
new file mode 100644
index 000000000..a2e62e944
--- /dev/null
+++ b/src/sdl2gfx/SDL2_framerate.h
@@ -0,0 +1,103 @@
+/*
+
+SDL2_framerate.h: framerate manager
+
+Copyright (C) 2012  Andreas Schiffler
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+claim that you wrote the original software. If you use this software
+in a product, an acknowledgment in the product documentation would be
+appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and must not be
+misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source
+distribution.
+
+Andreas Schiffler -- aschiffler at ferzkopp dot net
+
+*/
+
+#ifndef _SDL2_framerate_h
+#define _SDL2_framerate_h
+
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    /* --- */
+
+#include "SDL.h"
+
+    /* --------- Definitions */
+
+    /*!
+    \brief Highest possible rate supported by framerate controller in Hz (1/s).
+    */
+#define FPS_UPPER_LIMIT        200
+
+    /*!
+    \brief Lowest possible rate supported by framerate controller in Hz (1/s).
+    */
+#define FPS_LOWER_LIMIT        1
+
+    /*!
+    \brief Default rate of framerate controller in Hz (1/s).
+    */
+#define FPS_DEFAULT        30
+
+    /*! 
+    \brief Structure holding the state and timing information of the framerate controller. 
+    */
+    typedef struct
+    {
+        uint32_t framecount;
+        float rateticks;
+        uint32_t baseticks;
+        uint32_t lastticks;
+        uint32_t rate;
+    } FPSmanager;
+
+    /* ---- Function Prototypes */
+
+#ifdef _MSC_VER
+#  if defined(DLL_EXPORT) && !defined(LIBSDL2_GFX_DLL_IMPORT)
+#    define SDL2_FRAMERATE_SCOPE __declspec(dllexport)
+#  else
+#    ifdef LIBSDL2_GFX_DLL_IMPORT
+#      define SDL2_FRAMERATE_SCOPE __declspec(dllimport)
+#    endif
+#  endif
+#endif
+#ifndef SDL2_FRAMERATE_SCOPE
+#  define SDL2_FRAMERATE_SCOPE extern
+#endif
+
+    /* Functions return 0 or value for sucess and -1 for error */
+
+    SDL2_FRAMERATE_SCOPE void SDL_initFramerate(FPSmanager *const manager);
+    SDL2_FRAMERATE_SCOPE int SDL_setFramerate(FPSmanager *const manager,
+                                              const uint32_t rate);
+    SDL2_FRAMERATE_SCOPE int SDL_getFramerate(FPSmanager *const manager);
+    SDL2_FRAMERATE_SCOPE int SDL_getFramecount(FPSmanager *const manager);
+    SDL2_FRAMERATE_SCOPE uint32_t SDL_framerateDelay(FPSmanager *const
+                                                     manager);
+
+    /* --- */
+
+    /* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* _SDL2_framerate_h */