/*
 * (C) 2009-2014 see Authors.txt
 *
 * This file is part of MPC-BE.
 *
 * MPC-BE 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 3 of the License, or
 * (at your option) any later version.
 *
 * MPC-BE 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, see <http://www.gnu.org/licenses/>.
 *
 */

#pragma once

#include <atlbase.h>
#include <atlutil.h>
#include "ISyncClock.h"

class CSyncClockFilter;

class CSyncClock: public CBaseReferenceClock
{
	friend class CSyncClockFilter;
public:
	CSyncClock(LPUNKNOWN pUnk, HRESULT *phr);

	REFERENCE_TIME GetPrivateTime();
	IUnknown * pUnk() {
		return static_cast<IUnknown*>(static_cast<IReferenceClock*>(this));
	}
	DOUBLE adjustment; // For adjusting speed temporarily
	DOUBLE bias; // For changing speed permanently

private:
	REFERENCE_TIME m_rtPrivateTime;
	LONGLONG m_llPerfFrequency;
	REFERENCE_TIME m_rtPrevTime;
	CCritSec m_csClock;
	IReferenceClock * m_pCurrentRefClock;
	IReferenceClock * m_pPrevRefClock;
	REFERENCE_TIME GetTicks100ns();
};

class __declspec(uuid("57797fe5-ee9b-4408-98a9-20b134e7e8f0"))
	CSyncClockFilter: public ISyncClock, public CBaseFilter
{
public:
	CSyncClockFilter(LPUNKNOWN pUnk, HRESULT *phr);
	virtual ~CSyncClockFilter();

	DECLARE_IUNKNOWN
	STDMETHODIMP NonDelegatingQueryInterface( REFIID riid, void ** ppv);

	// ISyncClock
	STDMETHODIMP AdjustClock(DOUBLE adjustment);
	STDMETHODIMP SetBias(DOUBLE bias);
	STDMETHODIMP GetBias(DOUBLE *bias);
	STDMETHODIMP GetStartTime(REFERENCE_TIME *startTime);

	//  CBaseFilter methods
	int GetPinCount();
	CBasePin* GetPin(int iPin);

private:
	CSyncClock m_Clock;
	CCritSec m_Lock;
};
