fmtfact.cpp
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上传日期:2007-06-06
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文件大小:4k
- /* ***** 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 "fmtfact.h"
- PayloadFormatFactory::PayloadFormatFactory()
- {}
- PayloadFormatFactory::~PayloadFormatFactory()
- {}
- HX_RESULT PayloadFormatFactory::BuildFormat(IUnknown* pContext,
- BOOL bPacketize,
- IHXValues* pHeader,
- REF(IMP4APayloadFormat*) pFmt)
- {
- HX_RESULT res = HXR_FAILED;
- CHXSimpleList::Iterator itr = m_builders.Begin();
- pFmt = 0;
- BOOL bRequestUpgrade = FALSE;
- for(;(itr != m_builders.End()) && !SUCCEEDED(res); ++itr)
- {
- IMP4APayloadFormat* pTmp = 0;
- if (SUCCEEDED(((FormatBuildFunc)(*itr))(pTmp)))
- {
- HX_RESULT retVal = pTmp->Init(pContext, bPacketize);
- if (SUCCEEDED(retVal))
- {
- retVal = pTmp->SetStreamHeader(pHeader);
- if (SUCCEEDED(retVal))
- {
- pFmt = pTmp;
- pTmp->AddRef();
- res = HXR_OK;
- }
- else if (retVal == HXR_REQUEST_UPGRADE)
- {
- bRequestUpgrade = TRUE;
- }
- }
- }
- HX_RELEASE(pTmp);
- }
- // We we still have a failure code here and bRequestUpgrade
- // is TRUE, then one of the depacketizers loaded and init'd,
- // but returned HXR_REQUEST_UPGRADE on SetStreamHeader(). This
- // indicates that the depacketizer could handle the stream
- // mime type, but there was something about the version it
- // couldn't handle. So we need to return HXR_REQUEST_UPGRADE
- // back to the CAudioFormat, so that it will return HXR_REQUEST_UPGRADE
- // to the CAudioRenderer, which will cause an AU.
- if (FAILED(res) && bRequestUpgrade)
- {
- res = HXR_REQUEST_UPGRADE;
- }
- return res;
- }
- void PayloadFormatFactory::RegisterBuilder(FormatBuildFunc pBuildFunc)
- {
- m_builders.AddTail((void*)pBuildFunc);
- }