VLSELECTEVENTS(3dm)VLSELECTEVENTS(3dm)NAME
vlSelectEvents - select VL events of interest
SYNOPSIS
#include <dmedia/vl.h>
int vlSelectEvents(VLServer svr, VLPath path, VLEventMask eventMask);
PARAMETERS
svr Specifies video server.
path Specifies path.
eventMask Mask of events of interest.
DESCRIPTION
vlSelectEvents expresses interest in knowing about events specified in
the eventMask parameter. Event masks may be OR'd together to select
multiple events.
The VL defines the following event masks:
VLNoEventsMask All events are ignored.
VLStreamBusyMask The data stream is locked by another client.
VLStreamPreemptedMask The data stream has been taken over by another
client.
VLStreamAvailableMask The data stream has been released by another
client.
VLSyncLostMask No video synchronization is detected.
VLStreamStartedMask The data stream has started delivery.
VLStreamStoppedMask The data stream has stopped delivery.
VLSequenceLostMask A field or frame was missed.
VLControlChangedMask A control has changed.
VLControlRangeChangedMask The valid range for a control has changed.
VLControlPreemptedMask A control has been taken over (locked) by
another client.
VLControlAvailableMask A control has been released (unlocked) by
another client.
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VLSELECTEVENTS(3dm)VLSELECTEVENTS(3dm)
VLTransferCompleteMask The data transfer has completed.
VLTransferFailedMask The data transfer has failed.
VLEvenVerticalRetraceMask An even field vertical retrace has occurred.
VLOddVerticalRetraceMask An odd field vertical retrace has occurred.
VLFrameVerticalRetraceMask A frame vertical retrace has occurred.
VLDeviceEventMask A device event, e.g. external trigger, has occurred.
VLDefaultSourceMask The default video source has changed.
RETURN VALUE
If successful, this function returns zero. A value of -1 indicates an
error.
SEE ALSOvlNextEvent(3dm), vlPeekEvent(3dm), vlConnectionNumber(3dm)
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