hxsm2.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 _HXSM2_H_
#define _HXSM2_H_

#include "hxtypes.h"
#include "hxcom.h"
#include "hxsmbw.h"
#include "hxslist.h"
#include "ihxpckts.h"

class HXSM2 : public IHXBandwidthManager
{
public:
    HXSM2();
    ~HXSM2();

    STDMETHOD (QueryInterface ) (THIS_ REFIID ID, void** ppInterfaceObj);
    STDMETHOD_(UINT32, AddRef ) (THIS);
    STDMETHOD_(UINT32, Release) (THIS);

    /*
     *	IHXBandwidthManager methods
     */
    STDMETHOD(RegisterSource)(THIS_
			      HXSource* pSource,
			      IUnknown* pUnknown);

    STDMETHOD(RegisterSourcesDone)	(THIS);
    
    STDMETHOD_(BOOL, NotEnoughBandwidth)(THIS);

    STDMETHOD(UnRegisterSource)	(THIS_
				HXSource* pSource);

    /* If the source has enough data, it may tell the bandwidth
     * manager to cut down on accelerated buffering.
     */
    STDMETHOD(ChangeAccelerationStatus)	(THIS_
				HXSource* pSource,
				BOOL	   bMayBeAccelerated,
				BOOL	   bUseAccelerationFactor,
				UINT32	   ulAccelerationFactor);

    /* Called by HXPlayer at end of each presentation */
    STDMETHOD(PresentationDone)	(THIS);
    
    STDMETHOD(ChangeBW) (THIS_ 
		UINT32 newBW, HXSource* pSource);

private:
    UINT32 GetStreamCount();

    void Recalc();

    UINT32 m_lRefCount;

    UINT32 m_ulNumSources;
    CHXSimpleList* m_pASMSourceInfo;

    UINT32 m_ulNumStreams;

    UINT32 m_ulOfferToRecalc;
    UINT32 m_ulSelectionBitRate;
    UINT32 m_ulMaxAccelBitRate;
    UINT32 m_ulSustainableBitRate;

    IHXValues* m_pSubscriptionVariables;
    BOOL m_bCheckOnDemandBw;
};

#endif /* _HXSM2_H_ */