vdclback.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 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 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (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.  
 *  
 * 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 _VDCLBACK_H_
#define _VDCLBACK_H_

typedef void (HXEXPORT_PTR FP_CALLBACK)(void* cookie);

class CVideoSchedulerCallback
    : public IHXCallback
    , public IHXInterruptSafe
{
public:
    CVideoSchedulerCallback(FP_CALLBACK pFunc,
	void* cookie,
	IUnknown* pContext, 
	BOOL bUseOptimizedScheduler);

    virtual ~CVideoSchedulerCallback();

    STDMETHOD(Close)		    ();

    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	    (THIS_
				    REFIID riid,
				    void** ppvObj);
    STDMETHOD_(ULONG32, AddRef)	    (THIS);
    STDMETHOD_(ULONG32, Release)    (THIS);

    /*
     * IHXCallback methods
     */
    STDMETHOD(Func)		    (THIS);

    STDMETHOD_(BOOL, ShouldKickStartScheduler)();
    
    /*
     * IHXInterruptSafe method
     */
    STDMETHOD_(BOOL, IsInterruptSafe)();
     
    STDMETHOD(ScheduleCallback)	    (THIS_
				    UINT32 ulRelativeTime, 
				    UINT32 ulTicksTime);

private:
    LONG32			    m_lRefCount;
    FP_CALLBACK			    m_pFunc;
    IHXScheduler*		    m_pScheduler;
    IHXOptimizedScheduler*	    m_pOptimizedScheduler;
    
    BOOL			    m_bIsInterruptSafe;

    CallbackHandle		    m_PendingHandle;
    BOOL			    m_bPendingCallback;
    BOOL			    m_bInCallback;
    void*			    m_cookie;
};

#endif /* _VDCLBACK_H_ */