SYNC_EVCB Field - ulSyncFlags

ulSyncFlags (ULONG)

This field is a set of bit flags with various meanings. These flags are set by the Sync/Stream Manager only. These flags can be reset by a slave stream handler.

SYNCOVERRUN

This flag is set by the Sync/Stream Manager if a synchronization pulse is reported by the master stream handler before the slave stream handler has processed the existing synchronization pulse.
SYNCPOLLING
This flag is set by the Sync/Stream Manager to indicate to a slave stream that a synchronization pulse has been reported by the master stream handler. The SYNC_EVCB fields (mmtimeStart and mmtimeMaster) are filled in by the Sync/Stream Manager before this bit flag is set. It is the responsibility of the slave stream handler to reset this flag to indicate that the synchronization pulse has been processed.

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