fmtpktparse.cpp
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上传日期:2007-06-06
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- /* ***** 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 "hxtypes.h"
- #include "hlxclib/stdio.h"
- #include "hxcom.h" // IUnknown
- #include "hxcomm.h" // IHXCommonClassFactory
- #include "ihxpckts.h" // IHXBuffer, IHXPacket, IHXValues
- #include "hxplugn.h" // IHXPlugin
- #include "hxrendr.h" // IHXRenderer
- #include "hxengin.h" // IHXInterruptSafe
- #include "hxcore.h" // IHXStream
- #include "hxausvc.h" // Audio Services
- #include "hxmon.h" // IHXStatistics
- #include "hxupgrd.h" // IHXUpgradeCollection
- #include "hxslist.h" // CHXSimpleList
- #include "carray.h" // CHXPtrArray
- #include "mpadecobj.h" // MPEG Audio Decoder (selects fixed-pt or floating-pt based on HELIX_CONFIG_FIXEDPOINT)
- #include "mp3format.h" // MP3 formatter
- #include "mp3rend.h" // CRnMp3Ren
- #include "pktparse.h" // CPacketParser
- #include "fmtpktparse.h" // CFmtPacketParser
- CFmtPacketParser::CFmtPacketParser() :
- CPacketParser(),
- m_pPacket(NULL)
- {
- m_bReformatted = TRUE;
- }
- CFmtPacketParser::~CFmtPacketParser()
- {
- HX_RELEASE(m_pPacket);
- }
- HX_RESULT
- CFmtPacketParser::AddPacket(IHXPacket* pPacket, INT32 streamOffsetTime)
- {
- if(pPacket == NULL)
- {
- return HXR_INVALID_PARAMETER;
- }
- HX_RELEASE(m_pPacket);
- m_pPacket = pPacket;
- m_pPacket->AddRef();
- return HXR_OK;
- }
- HX_RESULT
- CFmtPacketParser::RenderAll()
- {
- if(!m_pRenderer || !m_pFmt || !m_pPacket)
- {
- return HXR_FAIL;
- }
-
- BOOL bPacketLoss = m_pPacket->IsLost();
- double dTime;
- if(!bPacketLoss)
- {
- IHXBuffer* pBufObj = m_pPacket->GetBuffer();
- if(!pBufObj)
- {
- return HXR_FAIL;
- }
- UCHAR* pFrame;
- UINT32 ulSize;
- pBufObj->Get(pFrame, ulSize);
- if(!pFrame || !ulSize)
- {
- pBufObj->Release();
- return HXR_FAIL;
- }
-
- // Copy the data into the decode buffer
- m_ulDecBufBytes = min(ulSize, DEC_BUFFER_SIZE);
- memcpy(m_pDecBuffer, pFrame, m_ulDecBufBytes); /* Flawfinder: ignore */
- pBufObj->Release();
- if(!m_pDecoder && !InitDecoder(m_pDecBuffer, m_ulDecBufBytes, FALSE))
- {
- return HXR_FAIL;
- }
- // ClearMainDataBegin() after
- // the call to InitDecoder(), because the layer needs
- // to be set before we call ClearMainDataBegin().
- m_pFmt->ClearMainDataBegin(m_pDecBuffer);
-
- dTime = m_pPacket->GetTime();
- }
- else
- {
- dTime = m_dNextPts;
- }
-
- if(!m_ulDecBufBytes)
- {
- return HXR_FAIL;
- }
- // If the packet is lost we use the last packet, still in the buffer
- // NOTE: We should probably check the value returned by D&R!
- DecodeAndRender(m_pDecBuffer, m_ulDecBufBytes, dTime, bPacketLoss);
-
- m_dNextPts = dTime + m_dFrameTime;
- return HXR_OK;
- }
- void
- CFmtPacketParser::RestartStream(void)
- {
- HX_RELEASE(m_pPacket);
- m_ulDecBufBytes = 0;
- }