dllaccesserver.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 _DLLACCESSERVER_H_
#define _DLLACCESSERVER_H_

/************************************************************************
 *  Includes
 */
#include "hxcom.h"
#include "hxdllaccess.h"
#include "dllacces.h"

class DLLAccessServer : public IHXDllAccess
{
public:
    /*
     *	Constructor/Destructor
     */
    DLLAccessServer();

    ~DLLAccessServer();

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

    STDMETHOD_(ULONG32,AddRef)	(THIS);

    STDMETHOD_(ULONG32,Release)	(THIS);

    /*
     *	IHXDllAccess methods
     */
    /************************************************************************
     * Method:
     *	    IHXDllAccess::Open()
     * Purpose:
     *	    Open a Dll of the specified name and type.  
     */
    STDMETHOD(Open)		(THIS_
				const char* pDllName,
				UINT16 uLibType
				);

    /************************************************************************
     * Method:
     *	    IHXDllAccess::Close()
     * Purpose:
     *	    Close opened Dll.
     */
    STDMETHOD(Close)		(THIS);

    /************************************************************************
     * Method:
     *	    IHXDllAccess::GetSymbol()
     * Purpose:
     *	    Obtain pointer to symbol in opened Dll.
     */
    STDMETHOD_(void*, GetSymbol)	(THIS_
					const char* pSymbolName
					);

    /************************************************************************
     * Method:
     *	    IHXDllAccess::GetError()
     * Purpose:
     *	    Get service specific error code (0 = no error).
     */
    STDMETHOD_(ULONG32,GetError)	(THIS);

    /************************************************************************
     * Method:
     *	    IHXDllAccess::GetErrorString()
     * Purpose:
     *	    Get last error string.
     */
    STDMETHOD_(const char*, GetErrorString)	(THIS);

    /************************************************************************
     * Method:
     *	    IHXDllAccess::GetDllName()
     * Purpose:
     *	    Get opened Dll name
     */
    STDMETHOD_(const char*, GetDllName)		(THIS);

    /************************************************************************
     * Method:
     *	    IHXDllAccess::GetDllVersion()
     * Purpose:
     *	    Get opened Dll vesion
     */
    STDMETHOD_(const char*, GetDllVersion)	(THIS);
    
    /************************************************************************
     * Method:
     *	    IHXDllAccess::IsOpen()
     * Purpose:
     *	    Tells if Dll is opened:
     *		TRUE  = dll is opened
     *		FALSE = dll is not opened	
     */
    STDMETHOD_(BOOL,IsOpen)	(THIS);
    
private:
    INT32 m_lRefCount;

    DLLAccess mDllAccess;
};

#endif	// _DLLACCESSERVER_H_