pxtimer.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: pxtimer.h,v 1.2.52.3 2004/07/09 01:43:51 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef PXTIMER_H
- #define PXTIMER_H
- // Forward declarations
- typedef _INTERFACE IHXCallback IHXCallback;
- typedef _INTERFACE IHXScheduler IHXScheduler;
- class CHXBaseCountingObject;
- class PXTimerResponse : public IUnknown
- {
- public:
- // IUnknown methods
- STDMETHOD(QueryInterface) (THIS_ REFIID riid, void **ppvObj) PURE;
- STDMETHOD_(ULONG32,AddRef) (THIS) PURE;
- STDMETHOD_(ULONG32,Release) (THIS) PURE;
- // PXTimerResponse methods
- STDMETHOD(TimerFire) (THIS_ UINT32 ulInstance) PURE;
- };
- class PXTimer : public CHXBaseCountingObject,
- public IHXCallback
- {
- public:
- PXTimer();
- virtual ~PXTimer();
- // IUnknown methods
- STDMETHOD(QueryInterface) (THIS_ REFIID riid, void **ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- // IHXCallback methods
- STDMETHOD(Func) (THIS);
- // PXTimer methods
- HX_RESULT Init(UINT32 ulInstance,
- IUnknown* pContext,
- PXTimerResponse* pResponse);
- HX_RESULT StartTimer(UINT32 ulInterval);
- void StopTimer();
- BOOL IsStarted();
- protected:
- enum
- {
- kStateConstructed,
- kStateInitialized,
- kStateActive,
- kMinInterval = 33
- };
- INT32 m_lRefCount;
- UINT32 m_ulState;
- UINT32 m_ulInstance;
- UINT32 m_ulInterval;
- IHXScheduler* m_pScheduler;
- PXTimerResponse* m_pResponse;
- UINT32 m_ulCallbackHandle;
- BOOL m_bCallbackPending;
- BOOL m_bInsideTimerFire;
- void Deallocate();
- BOOL IsCallbackPending();
- void RemovePendingCallback();
- };
- inline BOOL PXTimer::IsCallbackPending()
- {
- return m_bCallbackPending;
- }
- inline void PXTimer::RemovePendingCallback()
- {
- if (m_bCallbackPending && m_pScheduler)
- {
- m_pScheduler->Remove(m_ulCallbackHandle);
- m_bCallbackPending = FALSE;
- m_ulCallbackHandle = 0;
- }
- }
- inline BOOL PXTimer::IsStarted()
- {
- return (m_ulState == kStateActive ? TRUE : FALSE);
- }
- #endif