hxdll.cpp

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 ***** */ 

// define all guids here once...
#include "hxcom.h"
#include "hxtypes.h"
#include "hxassert.h"
#include "hxresult.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxcore.h"
#include "hxslist.h"
#include "hxcleng.h"
#include "dllpath.h"
#include "hxdll.h"

#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE		
static const char HX_THIS_FILE[] = __FILE__;
#endif

ENABLE_DLLACCESS_PATHS(HXCore);

#if !defined(HELIX_CONFIG_NOSTATICS)
HXClientEngine*    g_pEngine	  = NULL;
UINT16		    g_uNumEngines = 0;
#else
#include "globals/hxglobals.h"
const HXClientEngine* const g_pEngine	  = NULL;
const UINT16		    g_uNumEngines = 0;
#endif

/////////////////////////////////////////////////////////////////////////////
//
//	Function:
//
//		CreateEngine()
//
//	Purpose:
//
//
//	Parameters:
//
//	Return:
//
//		HX_RESULT
//		Error code indicating the success or failure of the function.
//
//	Notes:
//
//
STDAPI
ENTRYPOINT(CreateEngine)(IHXClientEngine**	ppEngine)
{
#if defined(HELIX_CONFIG_NOSTATICS)
    UINT16& g_uNumEngines = (UINT16&)HXGlobalInt16::Get(&::g_uNumEngines);
    HXClientEngine*& g_pEngine =
	(HXClientEngine*&)HXGlobalPtr::Get(&::g_pEngine);
#endif

    g_uNumEngines++;
    
    if (g_pEngine)
    {
	*ppEngine	= g_pEngine;
	return HXR_OK;
    }

    *ppEngine	= new HXClientEngine;
    if (*ppEngine)
    {
	(*ppEngine)->AddRef();
	g_pEngine = (HXClientEngine*) (*ppEngine);

	return HXR_OK;
    }

    return HXR_OUTOFMEMORY;
}


/////////////////////////////////////////////////////////////////////////////
//
//	Function:
//
//		CloseEngine()
//
//	Purpose:
//
//
//	Parameters:
//
//	Return:
//
//		HX_RESULT
//		Error code indicating the success or failure of the function.
//
//	Notes:
//
//
STDAPI
ENTRYPOINT(CloseEngine)(IHXClientEngine*	pEngine)
{
#if defined(HELIX_CONFIG_NOSTATICS)
    UINT16& g_uNumEngines = (UINT16&)HXGlobalInt16::Get(&::g_uNumEngines);
    HXClientEngine*& g_pEngine =
	(HXClientEngine*&)HXGlobalPtr::Get(&::g_pEngine);
#endif

    if (g_pEngine && pEngine)
    {
	if (g_uNumEngines > 0)
	{
	    g_uNumEngines--;
	}

	if (g_uNumEngines == 0)
	{
	    g_pEngine->Close();
	    g_pEngine->Release();
	    g_pEngine = NULL;

    /* check for memory leaks for debug core with release top level client
     * You have to set HXCoreOnlyMemoryLeak key under HKEY_CLASSES_ROOT and
     * set its value to 1.
     */
#if defined(_DEBUG) && !defined(_WINCE) && !defined(_VXWORKS)
    if (::HXDebugOptionEnabled("HXCoreOnlyMemoryLeak")==TRUE)
    {
	HX_DUMP_LEAKS();
    }
#endif
	}
    }

    return HXR_OK;
}