stream_desc_hlpr.cpp
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:3k
- /* ***** 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 ***** */
- #include "stream_desc_hlpr.h"
- #include "hxplugn.h"
- IHXStreamDescription*
- HXStreamDescriptionHelper::GetInstance(IUnknown* pContext,
- const char* pMimeType)
- {
- IHXStreamDescription* pSD = 0;
- IHXPlugin2Handler* pPlugin2Handler = NULL;
- const char* pFindMimeType = pMimeType;
- IUnknown* pInstance = NULL;
- pContext->QueryInterface(IID_IHXPlugin2Handler, (void**)&pPlugin2Handler );
- if(pPlugin2Handler)
- {
- if (HXR_OK == pPlugin2Handler->FindPluginUsingStrings(PLUGIN_CLASS,
- PLUGIN_STREAM_DESC_TYPE,
- PLUGIN_STREAMDESCRIPTION,
- (char*)pFindMimeType,
- NULL,
- NULL,
- pInstance))
- {
- HX_RESULT rc;
- rc = pInstance->QueryInterface(IID_IHXStreamDescription,
- (void**)&pSD);
- if(rc == HXR_OK)
- {
- IHXPlugin* pSDPlugin = 0;
- rc = pSD->QueryInterface(IID_IHXPlugin,
- (void**)&pSDPlugin);
- if(rc == HXR_OK)
- {
- pSDPlugin->InitPlugin(pContext);
- pSDPlugin->Release();
- }
- }
- pInstance->Release();
- }
- HX_RELEASE(pPlugin2Handler);
- }
- return pSD;
- }