hxaudvol.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: hxaudvol.h,v 1.2.36.1 2004/07/09 02:08:04 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 ***** */

#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