Method

ALSACtlCardcreate_source

Declaration [src]

gboolean
alsactl_card_create_source (
  ALSACtlCard* self,
  GSource** gsrc,
  GError** error
)

Description [src]

Allocate GSource structure to handle events from ALSA control character device. In each iteration of GMainContext, the read(2) system call is executed to dispatch control event for ALSACtlCard::handle-elem-event signal, according to the result of poll(2) system call.

Parameters

`gsrc`	`GSource`
	A `GSource` to handle events from ALSA control character device.
	The argument will be set by the function.
	The instance takes ownership of the data, and is responsible for freeing it.
`error`	`GError **`
	The return location for a `GError*`, or `NULL`.

Return value

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