vdclback.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: vdclback.h,v 1.1.36.1 2004/07/09 01:55:22 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 _VDCLBACK_H_
#define _VDCLBACK_H_

typedef void (HXEXPORT_PTR FP_CALLBACK)(void* cookie);

class CVideoSchedulerCallback
    : public IHXCallback
    , public IHXInterruptSafe
{
public:
    CVideoSchedulerCallback(FP_CALLBACK pFunc,
	void* cookie,
	IUnknown* pContext, 
	BOOL bUseOptimizedScheduler);

    virtual ~CVideoSchedulerCallback();

    STDMETHOD(Close)		    ();

    /*
     * IUnknown methods
     */
    STDMETHOD(QueryInterface)	    (THIS_
				    REFIID riid,
				    void** ppvObj);
    STDMETHOD_(ULONG32, AddRef)	    (THIS);
    STDMETHOD_(ULONG32, Release)    (THIS);

    /*
     * IHXCallback methods
     */
    STDMETHOD(Func)		    (THIS);

    STDMETHOD_(BOOL, ShouldKickStartScheduler)();
    
    /*
     * IHXInterruptSafe method
     */
    STDMETHOD_(BOOL, IsInterruptSafe)();
     
    STDMETHOD(ScheduleCallback)	    (THIS_
				    UINT32 ulRelativeTime, 
				    UINT32 ulTicksTime);

private:
    LONG32			    m_lRefCount;
    FP_CALLBACK			    m_pFunc;
    IHXScheduler*		    m_pScheduler;
    IHXOptimizedScheduler*	    m_pOptimizedScheduler;
    
    BOOL			    m_bIsInterruptSafe;

    CallbackHandle		    m_PendingHandle;
    BOOL			    m_bPendingCallback;
    BOOL			    m_bInCallback;
    void*			    m_cookie;
};

#endif /* _VDCLBACK_H_ */