void CTCMarshalByValue::FinalRelease()
{
_TRACE0("CTCMarshalByValue::FinalRelease()\n");
}
/* #FN#
The main timing function that an emulated Atari is based on */
void
/* #AS#
Nothing */
Timer_WaitForVBI( void )
{
long lSpareTicks;
ULONG ulTimerLastVal = s_ulAtariHWNextTime;
LARGE_INTEGER lnTicks;
int nDelay = 50;
#ifdef _DEBUG
DWORD dwPlayCursor = 0;
DWORD dwSaveCursor = 0;
// IDirectSoundBuffer_GetCurrentPosition( s_lpDSBuffer, &dwPlayCursor, &dwSaveCursor );
// if (abs(dwSaveCursor-dwPlayCursor)<1000)_TRACE2("Sound cursor: %d, %d\n", dwPlayCursor, dwSaveCursor);
#endif _DEBUG
QueryPerformanceCounter( &lnTicks );
if( s_bTimerRollover )
{
while( lnTicks.LowPart > s_ulAtariHWNextTime && (s_ulAtariHWNextTime - lnTicks.LowPart < s_ulDeltaT) )
{
QueryPerformanceCounter( &lnTicks );
lSpareTicks = ULONG_MAX - lnTicks.LowPart + 1;
_ASSERT(lSpareTicks <= (long)s_ulDeltaT);
if( lSpareTicks > s_nSleepThreshold )
{
SleepEx( SLEEP_TIME_IN_MS, TRUE );
QueryPerformanceCounter( &lnTicks );
}
}
s_bTimerRollover = FALSE;
}
lSpareTicks = (long)(s_ulAtariHWNextTime - lnTicks.LowPart);
if( lSpareTicks > 0L )
{
if( !_IsFlagSet( g_Misc.ulState, MS_FULL_SPEED ) )
{
while( lSpareTicks > s_nSleepThreshold )
{
SleepEx( SLEEP_TIME_IN_MS, TRUE );
QueryPerformanceCounter( &lnTicks );
lSpareTicks = (long)(s_ulAtariHWNextTime - lnTicks.LowPart);
#ifdef _DEBUG
// IDirectSoundBuffer_GetCurrentPosition( s_lpDSBuffer, &dwPlayCursor, &dwSaveCursor );
// _TRACE3("Sound cursor: %d, %d, %d\n", dwPlayCursor, dwSaveCursor, Atari800_nframes);
#endif
}
while( s_ulAtariHWNextTime > lnTicks.LowPart && lnTicks.LowPart > ulTimerLastVal )
QueryPerformanceCounter( &lnTicks );
s_ulAtariHWNextTime += s_ulDeltaT;
}
else
{
if( lSpareTicks > (long)s_ulDeltaT )
s_ulAtariHWNextTime = lnTicks.LowPart + s_ulDeltaT;
else
s_ulAtariHWNextTime += s_ulDeltaT;
}
}
else
{
if( -lSpareTicks > (long)s_ulDeltaT )
s_ulAtariHWNextTime = lnTicks.LowPart + 1;
else
s_ulAtariHWNextTime += s_ulDeltaT;
}
if( ulTimerLastVal > s_ulAtariHWNextTime )
s_bTimerRollover = TRUE;
if( _IsFlagSet( g_Sound.ulState, SS_DS_SOUND ) )
{
if( s_nFrameCnt > s_nFramesPerFrag )
{
/* SoundIsPaused indicates full speed mode in this case; if
the emulated Atari is paused, this routine is not invoked */
if( !s_bSoundIsPaused )
{
// _TRACE2("PrimaryThread.SndPlay_DSSound: s_nSaveFragNo: %d, s_nPlayFragNo: %d\n", s_nSaveFragNo, s_nPlayFragNo);
/* There is spinlock used to synchronize the threads. We should
avoid this solution but it's rather fast and we don't really
need the interlocked functions or critical sections here */
while( s_nSaveFragNo != s_nPlayFragNo && --nDelay )
Sleep( 1 );
#ifdef _DEBUG
if( 0 == nDelay ) _TRACE0("!PrimaryThread.SndPlay_DSSound: Delay = 0!\n");
#endif _DEBUG
}
/* The PlayFragNo indicator is incremented by a secondary thread so we can
synchronize the thread with primary thread's writes to a stream buffer */
if( ++s_nSaveFragNo == s_nNumberOfFrags )
s_nSaveFragNo = 0;
s_pSaveCursor = &s_pSoundBuffer[ s_nSaveFragNo * s_dwFragSize ];
s_dwFragPos = 0;
s_nUpdateCnt = 1;
s_nFrameCnt = 1;
}
}
} /* #OF# Timer_WaitForVBI */
HRESULT CTCMarshalByValue::FinalConstruct()
{
_TRACE0("CTCMarshalByValue::FinalConstruct()\n");
return S_OK;
}
