SBSPSS/source/system/clickcount.cpp
2000-10-05 14:13:04 +00:00

101 lines
2.2 KiB
C++

/******************/
/*** PSX Timer ***/
/******************/
#include <libapi.h>
#include "system\global.h"
#include "system\clickcount.h"
#include "system/gp.h"
/*****************************************************************************/
u32 CClickCount::s_currentTime=0;
bool CClickCount::s_initialised=false;
bool CClickCount::s_paused=false;
static const int COUNT_DOWN_VAL = 17200;//2150;
static const int COUNTS_PER_FRAME_INTERNAL = 4;
static const int COUNTS_PER_FRAME_EXTERNAL = 4096;
/*****************************************************************************/
void clockTicker()
{
u32 thisGp;
thisGp=ReloadGP();
CClickCount::updateCurrentTime();
SetGP(thisGp);
}
/*****************************************************************************/
u32 CClickCount::timeSinceLast()
{
if (!s_initialised)
{
initialise();
m_lastTime=getCurrentTime();
s_initialised=true;
}
u32 timeSince;
u32 currentTime;
u32 lastTime;
lastTime=m_lastTime;
currentTime=getCurrentTime();
timeSince=currentTime-m_lastTime;
m_lastTime=currentTime;
return((timeSince*COUNTS_PER_FRAME_EXTERNAL)/COUNTS_PER_FRAME_INTERNAL);
return(currentTime*4096);
}
/*****************************************************************************/
void CClickCount::initialise()
{
unsigned long eventHandle;
// set up variables and environment
EnterCriticalSection();
eventHandle = OpenEvent( RCntCNT2, EvSpINT, EvMdINTR,(long (*)(...)) clockTicker);
EnableEvent( eventHandle );
// SetRCnt( RCntCNT2, COUNT_DOWN_VAL, RCntMdINTR|RCntMdSP);
SetRCnt( RCntCNT2, COUNT_DOWN_VAL, RCntMdINTR);
StartRCnt( RCntCNT2 );
ExitCriticalSection();
}
/*****************************************************************************/
u32 CClickCount::getCurrentTime()
{
return(s_currentTime);
}
/*****************************************************************************/
void CClickCount::pauseClickCount()
{
ASSERT(!s_paused);
s_paused = true;
}
/*****************************************************************************/
void CClickCount::restartClickCount()
{
ASSERT(s_paused);
s_paused = false;
}
/*****************************************************************************/
void CClickCount::updateCurrentTime()
{
if (!s_paused)
{
s_currentTime++;
}
}