smltime.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

			    }
			}
			
		    }
		}
	    }
	    else // /No begin offset, so use delay minus syncBase delay:
	    {
		if (pSyncNode  &&  pSyncNode->m_pElement)
		{
		    if ((UINT32)-1 != ulSyncBaseDelay  &&
			    (UINT32)-1 != m_pSourceElement->m_ulDelay )
		    {
			HX_ASSERT(m_pSourceElement->m_ulDelay >=
				ulSyncBaseDelay);
			if (m_pSourceElement->m_ulDelay > ulSyncBaseDelay  ||
				// /Helps fix PR 66391: if delays are equal &
				// revisedDur=0, then remove this track:
				(0 == ulRevisedDur  &&
				m_pSourceElement->m_ulDelay == ulSyncBaseDelay))
			{
			    ULONG32 ulEffectiveBeginOffset =
				    m_pSourceElement->m_ulDelay -
				    ulSyncBaseDelay;
			    ulRevisedDur =
				    ulRevisedDur>ulEffectiveBeginOffset?
				    ulRevisedDur-ulEffectiveBeginOffset : 0;
			    bRevisedDurDoesNotIncludeDelayBeyondSyncbase = TRUE;

			    bOKToResetDurationIncludesDelayVar = FALSE;
			    // /Be sure to update the begin offset relative
			    // to the parent:  Helps fix
			    // "...20001116_parDurExtended_due_to_syncArc..."
			    m_pSourceElement->m_bCurBeginIsOffsetFromSyncBase =
				    TRUE;
			    m_pSourceElement->m_ulBeginOffsetFromSyncBase =
				    ulEffectiveBeginOffset;
			    // /Fixes part of PR 50684: if revised dur is 0
			    // or negative (ULONG32 floor of 0 prevents it
			    // from being negative), then we need to remove
			    // the track if it's been added already:
			    if (0 == ulRevisedDur  &&
				    m_pSourceElement->m_pHandler  &&
				    m_pSourceElement->m_bInsertedIntoTimeline)
			    {
				m_pSourceElement->m_bCurEndClippedByParent = TRUE;
				HX_RESULT retval2 = m_pSourceElement->m_pHandler->
					handleTrackRemoval((const char*)m_pID,
					(INT32)m_pSourceElement->m_pNode->m_nGroup);
				if (HXR_OK == retval2)
				{
				    // /Fixes case where element has sync arc
				    // to this end time and we need to notify it
				    // that we've ended early:
				    m_pParser->m_pTimelineElementManager->notify((const char*)m_pID);
				    bTrackStartsTooLateSoTrackRemoved = TRUE;
				    goto cleanup;
				}
			    }
			}
				
		    }
		    else if ((UINT32)-1 == ulSyncBaseDelay)
		    {
			// /Fixes case where par parent child of excl was
			// allowing child to begin even though par has no
			// explicit resolved begin and thus shouldn't begin:
			bOkToSetDuration = FALSE;
		    }
		}
	    }

	    if (bOkToSetDuration  &&  ((UINT32)-1 ==
		    m_pSourceElement->m_ulDuration  ||
		    m_pSourceElement->m_ulDuration < ulRevisedDur) )
	    {
		HX_ASSERT(m_pSourceElement->m_ulDuration == m_pSourceElement->getPureDuration());
		// /Adding this if() fixes PR 53514; parent explicit dur was
		// being forced on this child even if child has a shorter
		// intrinsic duration (which isn't known yet).  We need to
		// hold off setting the duration and rather set the max
		// duration:
		setMaxDuration(ulRevisedDur);
	    }
	    else if (bOkToSetDuration)
	    {
		m_bDurationSet = m_bDontResetDuration = TRUE;

		if (m_pSourceElement->m_ulDuration != ulRevisedDur)
		{
		    // /Parent-imposed duration always is relative to parent
		    // begin, so duration thus includes delay offset from
		    // parent.  Don't set flag unless offset>0, for
		    // consistency:
		    if (m_pSourceElement->m_bCurBeginIsOffsetFromSyncBase  &&
			    m_pSourceElement->m_ulBeginOffsetFromSyncBase > 0)
		    {
			m_pSourceElement->m_bDurationIncludesDelayBeyondSyncbase = TRUE;
		    }
		    if (bRevisedDurDoesNotIncludeDelayBeyondSyncbase)
		    {
			m_pSourceElement->m_bDurationIncludesDelayBeyondSyncbase = FALSE;
		    }

		    // /Adding this if() conditional around the call to
		    // "resetTimelineElement...()" makes PR55885 happen only
		    // after the first time it's played.  If you don't close
		    // the player and then restart the clip, sometimes 55885
		    // bug still appears; need to debug with core folks to
		    // see why this happens.
		    // /NOTE: Adding the following conditional *does* 100% fix
		    // "BUG-20010613-clickAllFourAndRestartOfGreenCauses..."
		    // "...ExtensionOfTimelinePastParEnd.smil":
		    if ((UINT32)-1 != m_pSourceElement->m_ulDelay)
		    {
			m_pParser->resetTimelineElementDuration(m_pID,
				// /Using the revised dur here helps fix
				// PR 59223, PR 50684, & PR 56795 (and
				// probably a lot of others):
				ulRevisedDur, ulPriorPureDuration);
		    }
		}
	    }
	}
	// /Fixes bug where par with a synchbase end (e.g., end="foo.begin")
	// was being ignored completely because its children were never
	// being added to the timeline:
	if (!m_pSourceElement->m_bInsertedIntoTimeline)
	{
	    if (HXR_OK == m_pParser->adjustForNegativeOffset(m_pID))
	    {
		// /Helps fix timing interop cases in the 11.2-11.9 range:
		if ((UINT32)-1 != m_pSourceElement->m_ulDelay)
		{
		    m_pParser->insertTimelineElement(m_pID, 
			    m_pSourceElement->m_ulDelay);
		}
	    }
	}
    }
    else // /Else this duration is not being set by parent:
    {
	if(!m_bDurationSet  ||
		// /Helps fix PR 86107; if pause is extending duration, we're
		// only here to notify our dependents and ancestor excl so it
		// can potentially update its duration so subSEQuent clips can
		// adjust their delays outward before getting scheduled w/core:
		bDurationExtendingDueToPause)
	{
	    LONG32 lDelayFromParentBegin = 0;
	    HX_ASSERT((!m_pSourceElement->m_bBeginOffsetSet  ||
		    m_pSourceElement->m_lBeginOffset>=0  ||
		    m_pSourceElement->m_bNegBeginOffsetAlreadyUsed)  &&
		    "ehodge_please_help_me_find_content_that_trips_this");
	    if (m_pSourceElement->m_bBeginOffsetSet  &&
		    // /Don't adjust if already adjusted for neg offset:
		    !m_pSourceElement->m_bNegBeginOffsetAlreadyUsed)
	    {
		lDelayFromParentBegin = m_pSourceElement->m_lBeginOffset;
	    }
	    // /Handle case where element began based on event or late-
	    // resolving time, in which case we want to treat the diff
	    // between when it resolved and what its sync-parent begin
	    // is as if it were a m_lBeginOffset:
	    else if (m_pSourceElement->m_bCurBeginIsOffsetFromSyncBase)
	    {
		lDelayFromParentBegin = (LONG32)
			m_pSourceElement->m_ulBeginOffsetFromSyncBase;
	    }
	    if (lDelayFromParentBegin>0  &&
		    // /1st part of fix for interop case 1.15 where begin and
		    // end are explicitly set to same val so dur should be 0:
		    ulDuration != 0)
	    {
		m_pSourceElement->m_ulDuration = (
		    ((INT32)ulDuration + lDelayFromParentBegin >0) ?
		    (UINT32)(
		    (INT32)ulDuration + lDelayFromParentBegin) : 0);

		// /NOTE: m_pSourceElement->m_bDurationIncludesDelayBeyondSyncbase
		// is TRUE in PR 79699 (occasionally) but it plays as expected so
		// I removed the HX_ASSERT() on !(..->m_bDurationIncludesDelay...)].
// /XXXEH- 20020625: maybe don't do above adding of delay, and then set this to FALSE?:
		m_pSourceElement->m_bDurationIncludesDelayBeyondSyncbase = TRUE;
		// /If duration is unresolved or indefinite, don't include
		// delay from parent so parent duration doesn't get extended
		// beyond WAY_IN_THE_FUTURE:
		if (WAY_IN_THE_FUTURE == ulDuration)
		{
		    m_pSourceElement->m_ulDuration = WAY_IN_THE_FUTURE;
		}
	    }
	    else
	    {
		lDelayFromParentBegin = 0; // /In case it was negative.
		m_pSourceElement->m_ulDuration = ulDuration;
		// /If end==begin, we need to NOT play the clip but we do
		// need to fire a beginEvent and endEvent for it.  However,
		// if end < begin, we don't fire these events (as in
		// SMIL 2.0 Interop Timing case 1.16):
		BOOL bEndBeforeBegin =
			m_pSourceElement->m_bBeginOffsetSet  &&
			m_pSourceElement->m_bEndOffsetSet  &&
			m_pSourceElement->m_lBeginOffset >
			m_pSourceElement->m_lEndOffset;
		if (0 == m_pSourceElement->m_ulDuration  &&
			!bEndBeforeBegin  &&  m_pSourceElement->m_pNode)
		{
		    // /Raise a beginEvent but don't play the thing (as in
		    // SMIL 2.0 Interop Timing case 1.15):
		    HX_RESULT rslt = HXR_OK;
		    rslt = m_pParser->tryToResolveBeginEndEvents(
			    "beginEvent",
			    (const char*)m_pSourceElement->m_pNode->m_id,
			    m_pSourceElement->m_ulDelay);
		    rslt = m_pParser->tryToResolveBeginEndEvents(
			    "endEvent",
			    (const char*)m_pSourceElement->m_pNode->m_id,
			    m_pSourceElement->m_ulDelay);
		}
	    }
	    m_bDurationSet = TRUE;

	    HX_ASSERT(m_pSourceElement->m_ulDuration>0  &&
		    "timing#1.15: child's dur (=0) not added to parent; refix!");
	    if(m_pParent  &&
		    // /Timing interop case 1.15 2nd part of fix:
		    m_pSourceElement->m_ulDuration>0)
	    {
		m_pParent->addDuration(m_pSourceElement->m_ulDuration,
			m_pSourceElement->m_ulDelay,
			(UINT32)lDelayFromParentBegin, m_pID);
		m_pSourceElement->m_bAddDurationAlreadyDone = TRUE;
	    }
	    // /Only do this if we're really setting the original duration
	    // (and not updating duration due to predicted pause extension):
	    if (!bDurationExtendingDueToPause)
	    {
		// /this keeps track of dur="x" or implicit source dur, in
		// case this element restarts after playing at least once:
		m_pSourceElement->m_ulOriginalDuration =
			m_pSourceElement->getPureDuration();
		HX_ASSERT(ulDuration == m_pSourceElement->getPureDuration()  ||
			m_pSourceElement->m_bDurationIncludesDelayBeyondSyncbase);
	    }
	}
	else if(!m_bDontResetDuration)
	{
	    m_pSourceElement->m_ulDuration = ulDuration;
	    m_pParser->resetTimelineElementDuration(m_pID,
		    m_pSourceElement->getPureDuration(),
		    ulPriorPureDuration);
	    // /this keeps track of dur="x" or implicit source dur, in
	    // case this element restarts after playing at least once:
	    m_pSourceElement->m_ulOriginalDuration =
		    m_pSourceElement->getPureDuration();
	    HX_ASSERT(ulDuration == m_pSourceElement->getPureDuration()  ||
		    m_pSourceElement->m_bDurationIncludesDelayBeyondSyncbase);
	}
	// /Adding the following else-if fixes PR 52110: if parent explicit
	// dur sets this's duration but this never got added to parent (via
	// addDuration()), then all subSEQuent tracks won't ever get resolved
	// begins:
	else if(!m_pSourceElement->m_bAddDurationAlreadyDone)
	{
	    HX_ASSERT(m_bDurationSet); // /Here because this was already set.
	    HX_ASSERT(m_bDelaySet  &&  (UINT32)-1 != m_pSourceElement->m_ulDelay);
	    HX_ASSERT(m_pSourceElement->m_ulDuration>0  &&
		    "child's dur (=0) not added to parent; refix!");
	    if(m_pParent  &&  m_pSourceElement->m_ulDuration>0)
	    {
		ULONG32 ulDelayFromSyncBaseBegin = 0;
		if (m_pSourceElement->m_bCurBeginIsOffsetFromSyncBase)
		{
		    ulDelayFromSyncBaseBegin =
			    m_pSourceElement->m_ulBeginOffsetFromSyncBase;
		}
		m_pParent->addDuration(m_pSourceElement->m_ulDuration, 
			m_pSourceElement->m_ulDelay,
			ulDelayFromSyncBaseBegin, m_pID);
		m_pSourceElement->m_bAddDurationAlreadyDone = TRUE;
	    }
	}

	// /If "dur" attribute value or intrinsic dur is less than the
	// min attribute value or greater than the max attribute value,
	// then we need to use min or max attribute's value as the duration:
	if (!m_bDontResetDuration  &&
		(m_pSourceElement->m_bUseMediaDurForMinDur  ||
		m_pSourceElement->m_bUseMediaDurForMaxDur  ||
		m_pSourceElement->m_ulMinActiveDur > 0  ||
		m_pSourceElement->m_ulMaxActiveDur != ((UINT32)-1) ) )
	{
	    BOOL bDoUpdate = FALSE;
	    LONG32 lBeginOffset = 0;
	    if (m_pSourceElement->m_bBeginOffsetSet)
	    {
		lBeginOffset = m_pSourceElement->m_lBeginOffset;
	    }
	    // /First, check if m_pSourceElement->m_bUseMediaDurForMinDur
	    // is TRUE.  If so, we want to use the max of ulDuration
	    // (media's intrinsic dur) and any explicitly-set dur (via
	    // dur="..." {or end="..."[-begin=".."]}:
	    if (m_pSourceElement->m_bUseMediaDurForMinDur)
	    {
		if (((UINT32)-1) != m_pSourceElement->m_ulAuthoredDur)
		{
		    HX_ASSERT(0 == m_pSourceElement->m_ulMinActiveDur);
		    // /Use authored dur if it's greater than intrinsic
		    // duration OR if max<min (since max<min negates both
		    // properties):
		    if (m_pSourceElement->m_ulAuthoredDur > ulDuration  ||
			    (((UINT32)-1) !=
			    m_pSourceElement->m_ulMaxActiveDur  &&
			    m_pSourceElement->m_ulMaxActiveDur < ulDuration))
		    {
			m_pSourceElement->m_ulDuration =
				m_pSourceElement->m_ulAuthoredDur;
			bDoUpdate = TRUE;
		    }
		}
	    }
	    // /Next, check if m_pSourceElement->m_bUseMediaDurForMaxDur
	    // is TRUE.  If so, we want to use the min of ulDuration
	    // (media's intrinsic dur) and any explicitly-set dur (via
	    // dur="..." or {end="..."[-begin=".."]}:
	    else if (m_pSourceElement->m_bUseMediaDurForMaxDur)
	    {
		if (((UINT32)-1) != m_pSourceElement->m_ulAuthoredDur)
		{
		    HX_ASSERT(((UINT32)-1) ==
			    m_pSourceElement->m_ulMaxActiveDur);
		    // /Use authored dur if it's less than intrinsic
		    // duration OR if min>max (since min>max negates both
		    // properties):
		    if (m_pSourceElement->m_ulAuthoredDur < ulDuration  ||
			    (0 != m_pSourceElement->m_ulMinActiveDur  &&
			    m_pSourceElement->m_ulMinActiveDur > ulDuration))
		    {
			m_pSourceElement->m_ulDuration =
				m_pSourceElement->m_ulAuthoredDur;
			bDoUpdate = TRUE;
		    }
		}
	    }
	    // /If no "dur" or "end" was specified, use the greater of the
	    // media's intrinsic dur and its min without exceeding its max,
	    // if any:
	    else if(((UINT32)-1) == m_pSourceElement->m_ulAuthoredDur)
	    {
		if (m_pSourceElement->m_ulMinActiveDur!=0  &&
			m_pSourceElement->m_ulDuration <
			m_pSourceElement->m_ulMinActiveDur)
		{
		    m_pSourceElement->m_ulDuration =
			    m_pSourceElement->m_ulMinActiveDur;
		    bDoUpdate = TRUE;
		}
		if (((UINT32)-1) != m_pSourceElement->m_ulMaxActiveDur  &&
			m_pSourceElement->m_ulDuration >
			m_pSourceElement->m_ulMaxActiveDur)
		{