hxrasyn.h

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/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: hxrasyn.h,v 1.1.1.1.50.3 2004/07/09 01:45:13 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 _HXRASYNC_H_
#define _HXRASYNC_H_

/*
 * Forward declarations of some interfaces defined or used here-in.
 */
typedef _INTERFACE	IUnknown			IUnknown;
typedef _INTERFACE	IHXRealAudioSync		IHXRealAudioSync;

/****************************************************************************
 * 
 *  Interface:
 * 
 *      IHXRealAudioSync
 * 
 *  Purpose:
 *
 *  This is a private interface used by RealAudio renderer to allow lip sync 
 *  with the RealVideo stream. It is exposed by IHXAudioStream
 * 
 *  IID_IHXRealAudioSync:
 * 
 *      {00000B00-b4c8-11d0-9995-00a0248da5f0}
 * 
 */
DEFINE_GUID(IID_IHXRealAudioSync, 0x00000B00, 0xb4c8, 0x11d0, 0x99, 0x95, 
				    0x0, 0xa0, 0x24, 0x8d, 0xa5, 0xf0);
#undef  INTERFACE
#define INTERFACE   IHXRealAudioSync

DECLARE_INTERFACE_(IHXRealAudioSync, IUnknown)
{
    /*
     *  IUnknown methods
     */
    STDMETHOD(QueryInterface)		(THIS_
					REFIID riid,
					void** ppvObj) PURE;

    STDMETHOD_(ULONG32,AddRef)		(THIS) PURE;

    STDMETHOD_(ULONG32,Release)		(THIS) PURE;
    
    /*
     *  IHXRealAudioSync methods
     */

    /************************************************************************
     *  Method:
     *      IHXRealAudioSync::Register
     *  Purpose:
     */
    STDMETHOD(Register)	(THIS) PURE;

    /************************************************************************
     *  Method:
     *      IHXRealAudioSync::UnRegister
     *  Purpose:
     */
    STDMETHOD(UnRegister)	(THIS) PURE;

    /************************************************************************
     *  Method:
     *      IHXRealAudioSync::FudgeTimestamp
     *  Purpose:
     *	    Tell the audio stream about the relationship between the number 
     *	    of bytes written to the actual timestamp.
     *	    
     */
    STDMETHOD(FudgeTimestamp)	(THIS_
				UINT32 /*IN*/ ulNumberofBytes,
				UINT32 /*IN*/ ulTimestamp
	    			) PURE;
};

#endif /*_HXRASYNC_H_*/