1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2006 Sam Lantinga

     4 

     5     This library is free software; you can redistribute it and/or

     6     modify it under the terms of the GNU Lesser General Public

     7     License as published by the Free Software Foundation; either

     8     version 2.1 of the License, or (at your option) any later version.

     9 

    10     This library is distributed in the hope that it will be useful,

    11     but WITHOUT ANY WARRANTY; without even the implied warranty of

    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13     Lesser General Public License for more details.

    14 

    15     You should have received a copy of the GNU Lesser General Public

    16     License along with this library; if not, write to the Free Software

    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    18 

    19     Sam Lantinga

    20     slouken@libsdl.org

    21 */

    22 #include "SDL_config.h"

    23 

    24 /* Useful functions and variables from SDL_timer.c */

    25 #include "SDL_timer.h"

    26 

    27 #define ROUND_RESOLUTION(X)	\

    28 	(((X+TIMER_RESOLUTION-1)/TIMER_RESOLUTION)*TIMER_RESOLUTION)

    29 

    30 extern int SDL_timer_started;

    31 extern int SDL_timer_running;

    32 

    33 /* Data to handle a single periodic alarm */

    34 extern Uint32 SDL_alarm_interval;

    35 extern SDL_TimerCallback SDL_alarm_callback;

    36 

    37 /* Set whether or not the timer should use a thread.

    38    This should be called while the timer subsystem is running.

    39 */

    40 extern int SDL_SetTimerThreaded(int value);

    41 

    42 extern int SDL_TimerInit(void);

    43 extern void SDL_TimerQuit(void);

    44 

    45 /* This function is called from the SDL event thread if it is available */

    46 extern void SDL_ThreadedTimerCheck(void);