hxaudvol.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 _HXAUDVOL_H
#define _HXAUDVOL_H


class CHXSimpleList;

class	CHXVolume: public IHXVolume
{
public:

	CHXVolume(void);

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

	STDMETHOD_(ULONG32,AddRef)  (THIS);

	STDMETHOD_(ULONG32,Release) (THIS);

	/*
	 *      IHXVolume methods
	 */
	STDMETHOD(SetVolume)		(THIS_
					const UINT16 /* IN */ uVolume
					);

	STDMETHOD_(UINT16,GetVolume)	(THIS);

	STDMETHOD(SetMute)		(THIS_
					const BOOL /* IN */ bMute
					);

	STDMETHOD_(BOOL,GetMute)	(THIS);

	STDMETHOD(AddAdviseSink)	(THIS_
					IHXVolumeAdviseSink* /* IN */ pSink
					);

	STDMETHOD(RemoveAdviseSink)	(THIS_
					IHXVolumeAdviseSink* /* IN */ pSink
					);

private:

	~CHXVolume(void);

	PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME

	STDMETHOD(Init)		(THIS);

        LONG32                          m_lRefCount;
	BOOL				m_bMute;
	UINT16				m_uVolume;
	CHXSimpleList*			m_pSinkList;

protected:
	BOOL		m_bInited;		// is audio setup?
 
};

#endif  // _HXAUDVOL_H