##### Sound Function - Sound Module Control Function

# sdPstmOpenPort

Gets PCM Stream port access permission

### FORMAT

`

  SDE_ERR sdPstmOpenPort( *handle, ch_num, use_ring_buf_num, ... )
  SDPSTM *handle
  Sint8 ch_num
  Sint8 use_ring_buf_num

`

### PARAMETER

  `handle` | Pointer to storage for obtained port number
  `ch_num` | Channel number to use
  `use_ring_buf_num` | Ring buffer number to use

### RETURN

  SDE_ERR_NO_INIT | The Sound Library has not been initialized |
  SDE_ERR_HANDLE_NULL | The handle is NULL |
  SDE_ERR_PRM_OVER_RANGE | Parameter out of range |

### DESCRIPTION

  Gets PCM Stream port access permission. Specify the required ring buffer number as a variable-length parameter.

sdPstmOpenPort

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