hxovmgr.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 _HXOVMGR_H_
#define _HXOVMGR_H_

struct CStatPoint
{
    UINT32          ulTime;
    UINT32          ulPixels;    
};

struct CSiteStats
{
    UINT32                  ulFirstTime; /* I do not even know why I need this */
    UINT32                  ulNumPixelsPerSecond;
    CHXSimpleList           samples;
    IHXOverlayResponse*    pResp;
};

class HXOverlayManager : public IHXOverlayManager,
                         public IHXCallback
{
protected:
    LONG32		    m_lRefCount;
    IUnknown*		    m_pContext;
    CHXSimpleList           m_ListOfSiteStats;
    IHXOverlayResponse*    m_pCurrentOverlayOwner;
    CallbackHandle          m_CallbackHandle;
    IHXScheduler*          m_pScheduler;
    IHXOverlayResponse*    m_pOldOverlaySite;
    IHXOverlayResponse*    m_pNewOverlaySite;
    HXMutex*               m_pMutex;
    float                   m_fThemoStatFactor;
    BOOL                    m_bChangingOwner;

    void ScheduleCallback(IHXOverlayResponse* pOld, IHXOverlayResponse* pNew);
    void ValidateCurrentOwner();
    void AddStatPoint(CSiteStats* pStats, UINT32 ulNumPixels, UINT32 ulTime);

public:

    HXOverlayManager(IUnknown* pContext);
    ~HXOverlayManager(void);
    void Close();
    void Initialize(); 

    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	(THIS_
				REFIID riid,
				void** ppvObj);

    STDMETHOD_(ULONG32,AddRef)	(THIS);

    STDMETHOD_(ULONG32,Release)	(THIS);

   
    /*
     *	IHXCommonClassFactory methods
     */

    STDMETHOD(HasOverlay)      (THIS_
                    IHXOverlayResponse* pResp
                    ) ;
    
    STDMETHOD(AddStats)      (THIS_
                    IHXOverlayResponse* pResp,
                    UINT32    ulNumPixels
                    ) ;

    
    STDMETHOD(RemoveOverlayRequest)(THIS_ IHXOverlayResponse* pResp ) ;

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


};

#endif // _HXOVMGR_H_