/*
    Copyright (C) 2013 Waves Audio Ltd.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
#ifdef _WINDOWS
    #include "IncludeWindows.h"
#endif
#if defined(__linux__) || defined(__MACOS__)
	#include <sys/time.h>
#endif

#include "UMicroseconds.h"

namespace wvNS { 
UMicroseconds& UMicroseconds::ReadTime()
{
#ifdef _WINDOWS
	LARGE_INTEGER Frequency, Count ;

	QueryPerformanceFrequency(&Frequency) ;
	QueryPerformanceCounter(&Count);
	theTime = uint64_t((Count.QuadPart * 1000000.0 / Frequency.QuadPart));
#endif

#if defined(__linux__) || defined(__MACOS__)
//	Mac code replaced by posix calls, to reduce Carbon dependency. 
	timeval buf;

	gettimeofday(&buf,NULL);

	// micro sec
  	theTime = uint64_t(buf.tv_sec) * 1000*1000 + buf.tv_usec;
#endif

	return *this;
}
/*
 Removed in favor of the posix implementation. 
#ifdef __MACOS__
	uint32_t UMicroseconds::hi() {return reinterpret_cast<UnsignedWide*>(&theTime)->hi;}
	uint32_t UMicroseconds::lo() {return reinterpret_cast<UnsignedWide*>(&theTime)->lo;}
#endif
*/
void UMicrosecondsAccumulator::Start()
{
	m_start_time.ReadTime();
}

void UMicrosecondsAccumulator::Stop()
{
	UMicroseconds stop_time;
	
	m_accumulator += stop_time.GetNativeTime() - m_start_time.GetNativeTime();
}

void UMicrosecondsAccumulator::Clear()
{
	m_start_time = 0;
	m_accumulator = 0;
}

UMicroseconds UMicrosecondsAccumulator::GetAccumulatedTime() const
{
	return m_accumulator;
}

UMicrosecondsAccumulator& UMicrosecondsAccumulator::operator+=(const UMicrosecondsAccumulator& inaccum_to_add)
{
	m_accumulator += inaccum_to_add.GetAccumulatedTime();
	return *this;
}
	
} // namespace wvNS {