medblock.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: medblock.h,v 1.1.1.1.50.1 2004/07/09 02:07:18 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 "hxcom.h"
#include "hxengin.h"
#include "hxtick.h"
#include "hxthread.h"

struct CMemoryNode;

struct CMemoryNode
{
    CMemoryNode*    m_pNext;
    UINT32	    m_nSize;
};

class CMediumBlockAllocator
    : public IMalloc
    , public IHXCallback
{
public:
   /*
    * IUnknown methods
    */
    STDMETHOD(QueryInterface)	(THIS_
				REFIID riid,
				void** ppvObj);

    STDMETHOD_(ULONG32,AddRef)	(THIS);

    STDMETHOD_(ULONG32,Release)	(THIS);

    /*
     * IMalloc methods
     */
    STDMETHOD_(void*,Alloc)	    (THIS_
				    UINT32  /*IN*/ count);

    STDMETHOD_(void*,Realloc)	    (THIS_
				    void*   /*IN*/ pMem,
				    UINT32  /*IN*/ count);

    STDMETHOD_(void,Free)	    (THIS_
				    void*   /*IN*/ pMem);

    STDMETHOD_(UINT32,GetSize)	    (THIS_
				    void*   /*IN*/ pMem);

    STDMETHOD_(BOOL,DidAlloc)	    (THIS_
				    void*   /*IN*/ pMem);

    STDMETHOD_(void,HeapMinimize)   (THIS);

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

    void RelaxBuckets();
    void SetScheduler(IUnknown* pUnk);
    CMediumBlockAllocator();
    PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME    

private:

    ~CMediumBlockAllocator();

    UINT32	    m_nMinBucketSize;
    UINT32	    m_nNumberBuckets;
    UINT32	    m_nBucketSize;
    CMemoryNode**   m_ppBuckets;
    UINT32*	    m_pTimeStampArray;
    UINT32*	    m_pCountArray;
    UINT32	    m_nLastTimeStamp;    
    UINT32	    m_nCurrentTimeStamp;
    UINT32	    m_nLastRelaxTime;
    UINT32	    m_nLastMinimizeTime;
    UINT32	    m_nHeaderSize;
    UINT32	    m_nRelaxTime;
    UINT32	    m_nCallbackTime;
    UINT32	    m_nGarbageTime;
    UINT32	    m_nGarbageDivider;
    LONG32	    m_lRefCount;
    CallbackHandle  m_hCallback;
    IHXScheduler*  m_pScheduler;
    HXMutex*	    m_pMutex;
};