Method

ALSARawmidiStreamPairopen

Declaration [src]

gboolean
alsarawmidi_stream_pair_open (
  ALSARawmidiStreamPair* self,
  guint card_id,
  guint device_id,
  guint subdevice_id,
  ALSARawmidiStreamPairInfoFlag access_modes,
  gint open_flag,
  GError** error
)

Description [src]

Open file descriptor for a pair of streams to attach input/output substreams corresponding to the given subdevice.

The call of function executes open(2) system call for ALSA rawmidi character device.

Parameters

`card_id`	`guint`
	The numeric identifier of sound card.
`device_id`	`guint`
	The numeric identifier of rawmidi device for the sound card.
`subdevice_id`	`guint`
	The numeric identifier of subdevice for the rawmidi device.
`access_modes`	`ALSARawmidiStreamPairInfoFlag`
	Access flags for stream direction.
`open_flag`	`gint`
	The flag of `open(2)` system call. `O_RDWR`, `O_WRONLY` and `O_RDONLY` are forced to fulfil internally according to the access_modes.
`error`	`GError **`
	The return location for a `GError*`, or `NULL`.

Return value

Returns:	`gboolean`
	`TRUE` when the overall operation finishes successfully, else `FALSE`.