55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/*
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* Copyright (C) 2002 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _TIMER_H_
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#define _TIMER_H_
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/* underlying clock rate in HZ */
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#include <SDL/SDL.h>
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extern Bit32u LastTicks;
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#define GetTicks() SDL_GetTicks()
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extern bool TimerAgain;
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typedef void (*TIMER_TickHandler)(Bitu ticks);
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typedef void (*TIMER_MicroHandler)(void);
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typedef void (*TIMER_DelayHandler)(void);
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typedef void TIMER_Block;
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/* Register a function that gets called everytime if 1 or more ticks pass */
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TIMER_Block * TIMER_RegisterTickHandler(TIMER_TickHandler handler);
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/* Register a function to be called every x microseconds */
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TIMER_Block * TIMER_RegisterMicroHandler(TIMER_MicroHandler handler,Bitu micro);
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/* Register a function to be called once after x microseconds */
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TIMER_Block * TIMER_RegisterDelayHandler(TIMER_DelayHandler handler,Bitu delay);
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/* Set the microseconds value to a new value */
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void TIMER_SetNewMicro(TIMER_Block * block,Bitu micro);
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/* This function should be called very often to support very high res timers
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Although with the new timer code it doesn't matter that much */
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void TIMER_CheckPIT(void);
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/* This will add ms ticks to support the timer handlers */
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void TIMER_AddTicks(Bit32u ticks);
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#endif
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