chxelst.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 "hxresult.h"
- #include "hxcom.h"
- #include "ihxpckts.h"
- #include "hxfiles.h"
- #include "hxcore.h"
- #include "chxeven.h"
- #include "chxelst.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- HX_RESULT CHXEventList::InsertEvent(CHXEvent* pEvent)
- {
- HX_RESULT theErr = HXR_OK;
- // enqueue the event into event queue
- CHXEvent* event = NULL;
- BOOL earlierPacketFound = FALSE;
- UINT32 currentPos = 0;
- UINT32 startPos = pEvent->GetTimeStartPos();
- // Loop we are done or we find an event that is after this
- // time stamp...
- LISTPOSITION position = GetTailPosition();
- while (position != NULL && !earlierPacketFound && theErr == HXR_OK )
- {
- event = GetPrev(position);
- // This event must be valid or else it shouldn't be
- // in this list!
- HX_ASSERT_VALID_PTR(event);
- currentPos = event->GetTimeStartPos();
- // either a) 0xFA 0xFB 0xFC (0xFD)
- // or b) 0xFA .. 0xFF [roll over] (0x01)
- if ((currentPos <= startPos && (startPos - currentPos) < MAX_TIMESTAMP_GAP) ||
- (currentPos > startPos && (currentPos - startPos) > MAX_TIMESTAMP_GAP))
- {
- // Remember that we found an earlier packet...
- earlierPacketFound = TRUE;
- // If the position is null, then event was the first
- // item in the list, and we need to do some fancy footwork...
- if (!position)
- {
- POSITION theHead = GetHeadPosition();
- LISTPOSITION listRet = InsertAfter(theHead,pEvent);
- if( listRet == NULL )
- {
- theErr = HXR_OUTOFMEMORY;
- }
- }
- // otherwise, roll ahead one...
- else
- {
- GetNext(position);
- // Now if the position is null, then event was the last
- // item in the list, and we need to do some more fancy footwork...
- if (!position)
- {
- AddTail(pEvent);
- }
- else
- // otherwise, we have a normal case and we want to insert
- // right after the position of event
- {
- LISTPOSITION listRet = InsertAfter(position,pEvent);
- if( listRet == NULL )
- {
- theErr = HXR_OUTOFMEMORY;
- }
- }
- }
- // We don't need to search any more...
- break; // while
- }
- } // end while...
- // If we didn't find an earlier packet, then we should insert at
- // the head of the event list...
- if (!theErr && !earlierPacketFound)
- {
- AddHead(pEvent);
- }
- return theErr;
- }