format  Bool STM_IsComplete (StmHn stm)
 Input  stm: Stream handle
 Output  None
 Function value  TRUE: When stream access has ended
  FALSE: When stream access has not ended
 Function  Checks whether access to the specified stream has been completed.
 Remarks  The timing when stream access ends is as follows. 

Transfer gate	Timing
closed	when reading finished
Open	When transfer ends

  format  Bool STM_ExecTrans (StmHn stm)
 Input  stm: Stream handle
 Output  None
 Function value  TRUE: Transfer started
:  FALSE: Transfer did not start
 Function  Transfers the specified stream data from the CD buffer section.
 Remarks  (a) Always FALSE when the transfer gate is closed.
  (b) The set transfer mode and the maximum number of transfer sectors are valid.
:  (c) If DMA transfer is specified, this transfer is not being performed by STM_IsTrans.
Call the  function  repeatedly.