format  Sint32 PCM_GetTime (PcmHn pcm)
 Input  pcm: Handle
 Output  None
 Function value  Current time
 Function  Acquires the current time.
  (Number of samples played from the beginning of this file to the present) 

  format  PcmPlayStatus PCM_GetPlayStatus (PcmHn pcm)
 Input  pcm: Handle
 Output  None
 Function value  Playback status
 Function  Returns the current playback status. 

  format  Uint32 * PCM_GetWriteBuf (PcmHn pcm, Sint32 * free_size, Sint32 * free_total)
 Input  pcm: Handle
 Output  free_size: Number of bytes in the continuous writable area
:  free_total: Total number of writable areas including discontinuous areas
 Function value  Start address of continuously writable area (NULL if not writable)
 Function  Gets the buffer address of the write destination and the number of bytes that can be written.
 Remarks  Use this when you want to supply data to the ring buffer independently. 

  format  void PCM_NotifyWriteSize (PcmHn pcm, Sint32 write_size)
 Input  pcm: Handle
  write_size: Number of bytes written
 Output  None
 Function value  None
 Function  Notifies the library of the number of bytes of data actually supplied to the ring buffer.
 Remarks  Use this when you want to supply data to the ring buffer independently.
:  When playing a file in memory, notify the buffer size (file size).
 .