hxsched.h
上传用户:dangjiwu
上传日期:2013-07-19
资源大小:42019k
文件大小:6k
- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: hxsched.h,v 1.4.32.1 2004/07/09 02:06:18 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 ***** */
- #include "hxthread.h"
- #ifndef _IHXSCHEDULER_
- #define _IHXSCHEDULER_
- #include "hxengin.h"
- class ClientPQ;
- class Timeline;
- class HXMutex;
- struct IUnknown;
- class CHXID;
- typedef struct _HXTimeval HXTimeval;
- #include "timeval.h"
- class CAsyncTimer;
- class HXScheduler : public IHXScheduler
- {
- protected:
- LONG32 m_lRefCount;
- ClientPQ* m_pScheduler;
- BOOL m_bUseDeferredTask;
- // Is set to TRUE for most of the time except when we need to remove all
- // callbacks from the scheduler without actually exectuing the functions..
- static BOOL m_sbProcess;
-
- /* special PQ for interrupt safe tasks */
- ClientPQ* m_pInterruptTimeScheduler;
- CHXID* m_pID;
- IUnknown* m_pContext;
- /* semaphore to prevent a deferred interrupt task from interrupting
- * a system task
- */
- BOOL m_bLocked;
- public:
- HXScheduler(IUnknown* pContext);
- ~HXScheduler();
- /*
- * IUnknown methods
- */
- STDMETHOD(QueryInterface) (THIS_
- REFIID riid,
- void** ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- /*
- * HXScheduler methods
- */
- /************************************************************************
- * Method:
- * IHXScheduler::RelativeEnter
- * Purpose:
- * enter objects in the service queue offset from time now
- */
- STDMETHOD_(CallbackHandle,RelativeEnter) (THIS_
- IHXCallback* pCallback,
- UINT32 ms);
- /************************************************************************
- * Method:
- * IHXScheduler::AbsoluteEnter
- * Purpose:
- * enter objects in the service queue at absolute time
- */
- STDMETHOD_(CallbackHandle,AbsoluteEnter) (THIS_
- IHXCallback* pCallback,
- HXTimeval tVal);
- /************************************************************************
- * Method:
- * IHXScheduler::Remove
- * Purpose:
- * remove objects from the service queue
- */
- STDMETHOD(Remove) (THIS_
- CallbackHandle Handle);
- /************************************************************************
- * Method:
- * IHXScheduler::GetCurrentSchedulerTime
- * Purpose:
- * gives the current time in the timeline of the scheduler...
- */
- STDMETHOD_(HXTimeval,GetCurrentSchedulerTime) (THIS);
- /************************************************************************
- * Method:
- * OnTimeSync
- * Purpose:
- * called by audio services OR the player timer to set the
- * current time of playback..
- *
- */
- HX_RESULT OnTimeSync(BOOL bAtInterrupt=FALSE);
- HX_RESULT ExecuteCurrentFunctions(BOOL bAtInterrupt=FALSE);
- HX_RESULT StartScheduler();
- void UseDeferredTask(BOOL bUseDeferredTask)
- {m_bUseDeferredTask = bUseDeferredTask;};
- HX_RESULT StartSchedulerTimerFixup();
- HX_RESULT StartSchedulerImplementation(BOOL TimerFixup);
-
- void StopScheduler();
- BOOL GetNextEventDueTimeDiff(ULONG32 &ulEarliestDueTimeDiff);
- BOOL IsEmpty();
- BOOL IsAtInterruptTime();
- void SetCoreMutex(HXMutex* pMutex) {m_pCoreMutex = pMutex;};
- void SetInterrupt(BOOL bInterruptenable)
- {m_bIsInterruptEnabled = bInterruptenable;};
- void NotifyPlayState(BOOL bInPlayingState);
- BOOL AreImmediatesPending(void) { return m_bImmediatesPending; }
- protected:
- Timeval m_CurrentTimeVal;
- UINT32 m_ulLastUpdateTime;
- HXMutex* m_pCoreMutex;
- BOOL m_bIsInterruptEnabled;
- Timeval m_headTime;
- Timeval m_interruptHeadTime;
- UINT32 m_ulSystemNextDueTime;
- UINT32 m_ulInterruptNextDueTime;
- BOOL m_bImmediatesPending;
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- CAsyncTimer* m_pAsyncTimer;
- #endif
- Timeline* m_pTimeline;
- ULONG32 m_ulCurrentGranularity;
- inline BOOL UpdateCurrentTime(BOOL bAtInterrupt,BOOL& bShouldServiceSystem,
- BOOL& bShouldServiceInterrupt);
- };
- #endif // _IHXSCHEDULER_