/usr/share/faust/AU/PublicUtility/CAHostTimeBase.cpp is in faust-common 0.9.95~repack1-2.
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File: CAHostTimeBase.cpp
Abstract: CAHostTimeBase.h
Version: 1.01
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*/
//=============================================================================
// Includes
//=============================================================================
#include "CAHostTimeBase.h"
Float64 CAHostTimeBase::sFrequency = 0;
Float64 CAHostTimeBase::sInverseFrequency = 0;
UInt32 CAHostTimeBase::sMinDelta = 0;
UInt32 CAHostTimeBase::sToNanosNumerator = 0;
UInt32 CAHostTimeBase::sToNanosDenominator = 0;
UInt32 CAHostTimeBase::sFromNanosNumerator = 0;
UInt32 CAHostTimeBase::sFromNanosDenominator = 0;
bool CAHostTimeBase::sUseMicroseconds = false;
bool CAHostTimeBase::sIsInited = false;
#if Track_Host_TimeBase
UInt64 CAHostTimeBase::sLastTime = 0;
#endif
//=============================================================================
// CAHostTimeBase
//
// This class provides platform independent access to the host's time base.
//=============================================================================
void CAHostTimeBase::Initialize()
{
// get the info about Absolute time
#if TARGET_OS_MAC
struct mach_timebase_info theTimeBaseInfo;
mach_timebase_info(&theTimeBaseInfo);
sMinDelta = 1;
sToNanosNumerator = theTimeBaseInfo.numer;
sToNanosDenominator = theTimeBaseInfo.denom;
sFromNanosNumerator = sToNanosDenominator;
sFromNanosDenominator = sToNanosNumerator;
// the frequency of that clock is: (sToNanosDenominator / sToNanosNumerator) * 10^9
sFrequency = static_cast<Float64>(sToNanosDenominator) / static_cast<Float64>(sToNanosNumerator);
sFrequency *= 1000000000.0;
#elif TARGET_OS_WIN32
LARGE_INTEGER theFrequency;
QueryPerformanceFrequency(&theFrequency);
sMinDelta = 1;
sToNanosNumerator = 1000000000ULL;
sToNanosDenominator = *((UInt64*)&theFrequency);
sFromNanosNumerator = sToNanosDenominator;
sFromNanosDenominator = sToNanosNumerator;
sFrequency = static_cast<Float64>(*((UInt64*)&theFrequency));
#endif
sInverseFrequency = 1.0 / sFrequency;
#if Log_Host_Time_Base_Parameters
DebugMessage( "Host Time Base Parameters");
DebugMessageN1(" Minimum Delta: %lu", sMinDelta);
DebugMessageN1(" Frequency: %f", sFrequency);
DebugMessageN1(" To Nanos Numerator: %lu", sToNanosNumerator);
DebugMessageN1(" To Nanos Denominator: %lu", sToNanosDenominator);
DebugMessageN1(" From Nanos Numerator: %lu", sFromNanosNumerator);
DebugMessageN1(" From Nanos Denominator: %lu", sFromNanosDenominator);
#endif
sIsInited = true;
}
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