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hxasm.h：源码内容
							/* ***** 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 _HXASM_H_
#define _HXASM_H_
/*
 * Forward declarations of some interfaces defined here-in.
 */
typedef _INTERFACE	IHXPacket			IHXPacket;
typedef _INTERFACE	IHXBackChannel			IHXBackChannel;
typedef _INTERFACE	IHXASMSource			IHXASMSource;
typedef _INTERFACE	IHXASMStreamSink		IHXASMStreamSink;
typedef _INTERFACE	IHXASMStream2			IHXASMStream2;
typedef _INTERFACE	IHXASMStream			IHXASMStream;
/****************************************************************************
 * 
 *  Interface:
 * 
 *	IHXBackChannel
 * 
 *  Purpose:
 * 
 *      Backchannel interface to be used by renderers and implemented by
 *	FileFormat Plugins
 * 
 *  IID_IHXBackChannel:
 *  
 *	{00001500-0901-11d1-8B06-00A024406D59}
 *
 */
DEFINE_GUID(IID_IHXBackChannel, 0x00001500, 0x901, 0x11d1, 0x8b, 0x6, 0x0, 
				 0xa0, 0x24, 0x40, 0x6d, 0x59);
#undef  INTERFACE
#define INTERFACE   IHXBackChannel
DECLARE_INTERFACE_(IHXBackChannel, IUnknown)
{
    /*
     *	IUnknown methods
     */
    STDMETHOD(QueryInterface)   (THIS_
                                REFIID riid,
                                void** ppvObj) PURE;
    STDMETHOD_(ULONG32,AddRef)  (THIS) PURE;
    STDMETHOD_(ULONG32,Release) (THIS) PURE;
    /*
     * IHXBackChannel method
     */
    /************************************************************************
     *	Method:
     *	    IHXBackChannel::PacketReady
     *	Purpose:
     *      A back channel packet sent from Renderer to FileFormat plugin.
     */
    STDMETHOD(PacketReady)	(THIS_
				IHXPacket* pPacket) PURE;
};
/****************************************************************************
 * 
 *  Interface:
 *
 *	IHXASMSource
 *
 *  Purpose:
 *
 *      This interface is implemented by file formats so that they can
 *	act on ASM Subscribe and Unsubscribe actions.
 *
 *  IID_IHXASMSource:
 *
 *	{00001501-0901-11d1-8B06-00A024406D59}
 *
 */
DEFINE_GUID(IID_IHXASMSource, 0x00001501, 0x901, 0x11d1, 0x8b, 0x6, 0x0, 
				 0xa0, 0x24, 0x40, 0x6d, 0x59);
#undef  INTERFACE
#define INTERFACE   IHXASMSource
DECLARE_INTERFACE_(IHXASMSource, IUnknown)
{
    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	(THIS_
				REFIID riid,
				void** ppvObj) PURE;
    STDMETHOD_(ULONG32,AddRef)	(THIS) PURE;
    STDMETHOD_(ULONG32,Release)	(THIS) PURE;
    /*
     * IHXASMSource methods
     */
    /************************************************************************
     *	Method:
     *	    IHXASMSource::Subscribe
     *	Purpose:
     *      Called to inform a file format that a subscription has occurred,
     *	    to rule number uRuleNumber, for stream uStreamNumber.
     */
    STDMETHOD(Subscribe)	(THIS_
				UINT16	uStreamNumber,
				UINT16	uRuleNumber) PURE;
    /************************************************************************
     *	Method:
     *	    IHXASMSource::Unsubscribe
     *	Purpose:
     *      Called to inform a file format that a unsubscription has occurred,
     *	    to rule number uRuleNumber, for stream uStreamNumber.
     */
    STDMETHOD(Unsubscribe)	(THIS_
				UINT16	uStreamNumber,
				UINT16	uRuleNumber) PURE;
};
/****************************************************************************
 * 
 *  Interface:
 *
 *	IHXASMStream
 *
 *  Purpose:
 *	This interface is implemented by the client core.  Top level clients
 *	renderers, etc can query for this interface off of IHXStream.  This
 *	interface allows you to subscribe and unsubscribe to certain rules,
 *	and it also allows you to add a advise sink for these events. 
 *
 *  IID_IHXASMStream:
 *
 *	{00001502-0901-11d1-8B06-00A024406D59}
 *
 */
DEFINE_GUID(IID_IHXASMStream, 0x00001502, 0x901, 0x11d1, 0x8b, 0x6, 0x0, 
				 0xa0, 0x24, 0x40, 0x6d, 0x59);
#undef  INTERFACE
#define INTERFACE   IHXASMStream
DECLARE_INTERFACE_(IHXASMStream, IUnknown)
{
    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	(THIS_
				REFIID riid,
				void** ppvObj) PURE;
    STDMETHOD_(ULONG32,AddRef)	(THIS) PURE;
    STDMETHOD_(ULONG32,Release)	(THIS) PURE;
    /*
     * IHXASMStream methods
     */
    /************************************************************************
     *	Method:
     *	    IHXASMStream::AddASMStreamSink
     *	Purpose:
     *	    Add an advise sink for getting subscribe and unsubscribe
     *	    notifications.
     */
    STDMETHOD(AddStreamSink)	(THIS_
				IHXASMStreamSink*	pASMStreamSink) PURE;
    /************************************************************************
     *	Method:
     *	    IHXASMStream::RemoveStreamSink
     *	Purpose:
     *	    Remove an advise sink for getting subscribe and unsubscribe
     *	    notifications.
     */
    STDMETHOD(RemoveStreamSink)	(THIS_
				IHXASMStreamSink*	pASMStreamSink) PURE;
    /************************************************************************
     *	Method:
     *	    IHXASMStream::Subscribe
     *	Purpose:
     *	    Called by renderers and possibly even top level clients to
     *	    inform the core to subscribe to a particular rule number for
     *	    this stream.
     */
    STDMETHOD(Subscribe)	(THIS_
				UINT16	uRuleNumber) PURE;
    /************************************************************************
     *	Method:
     *	    IHXASMStream::Unsubscribe
     *	Purpose:
     *	    Called by renderers and possibly even top level clients to
     *	    inform the core to unsubscribe to a particular rule number for
     *	    this stream.
     */
    STDMETHOD (Unsubscribe)	(THIS_
				UINT16	uRuleNumber) PURE;
};
/****************************************************************************
 * 
 *  Interface:
 *
 *	IHXASMStream2
 *
 *  Purpose:
 *	This interface is implemented by the client core.  Top level clients
 *	renderers, etc can query for this interface off of IHXStream.  This
 *	interface allows you to disable and re-enable certain rules.
 *
 *  IID_IHXASMStream2:
 *
 *	{00001504-0901-11d1-8b06-00a024406d59}
 *
 */
DEFINE_GUID(IID_IHXASMStream2, 0x00001504, 0x901, 0x11d1, 0x8b, 0x6, 0x0,
				 0xa0, 0x24, 0x40, 0x6d, 0x59);
#undef  INTERFACE
#define INTERFACE   IHXASMStream2
DECLARE_INTERFACE_(IHXASMStream2, IHXASMStream)
{
    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	(THIS_
				REFIID riid,
				void** ppvObj) PURE;
    STDMETHOD_(ULONG32,AddRef)	(THIS) PURE;
    STDMETHOD_(ULONG32,Release)	(THIS) PURE;
    /*
     * IHXASMStream2 methods
     */
    /************************************************************************
     *	Method:
     *	    IHXASMStream2::Disable 
     *	Purpose:
     *	    Called by RA renderer to inform the core to disable a 
     *	    particular rule for this stream.
     */
    STDMETHOD(Disable)	(THIS_
				UINT16	uRuleNumber) PURE;
    /************************************************************************
     *	Method:
     *	    IHXASMStream2::Enable
     *	Purpose:
     *	    Called by RA renderer to inform the core to enable a 
     *	    particular rule for this stream.
     */
    STDMETHOD (Enable)	(THIS_
				UINT16	uRuleNumber) PURE;
    STDMETHOD (ReCompute)	(THIS) PURE;
};
/****************************************************************************
 * 
 *  Interface:
 *
 *	IHXASMStreamSink
 *
 *  Purpose:
 *	This is a advise sink for getting notification about subscriptions
 *	and unsubscriptions for a stream.
 *
 *  IID_IHXASMStream:
 *
 *	{00001503-0901-11d1-8B06-00A024406D59}
 *
 */
DEFINE_GUID(IID_IHXASMStreamSink, 0x00001503, 0x901, 0x11d1, 0x8b, 0x6, 0x0, 
				 0xa0, 0x24, 0x40, 0x6d, 0x59);
#undef  INTERFACE
#define INTERFACE   IHXASMStreamSink
DECLARE_INTERFACE_(IHXASMStreamSink, IUnknown)
{
    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	(THIS_
				REFIID riid,
				void** ppvObj) PURE;
    STDMETHOD_(ULONG32,AddRef)	(THIS) PURE;
    STDMETHOD_(ULONG32,Release)	(THIS) PURE;
    /*
     * IHXASMStreamSink methods
     */
    /************************************************************************
     *	Method:
     *	    IHXASMStreamSink::OnSubscribe
     *	Purpose:
     *	    Called to inform you that a subscribe has occurred.
     */
    STDMETHOD (OnSubscribe)	(THIS_
				UINT16	uRuleNumber) PURE;
    /************************************************************************
     *	Method:
     *	    IHXASMStreamSink::OnUnsubscribe
     *	Purpose:
     *	    Called to inform you that a unsubscribe has occurred.
     */
    STDMETHOD (OnUnsubscribe)	(THIS_
				UINT16	uRuleNumber) PURE;
};
#endif /*_HXASM_H_*/

						