Method

ALSACtlCardget_elem_info

Declaration [src]

gboolean
alsactl_card_get_elem_info (
  ALSACtlCard* self,
  const ALSACtlElemId* elem_id,
  ALSACtlElemInfoCommon** elem_info,
  GError** error
)

Description [src]

Get information of element corresponding to given id.

The call of function executes ioctl(2) system call with SNDRV_CTL_IOCTL_ELEM_INFO command for ALSA control character device. For enumerated element, it executes the system call for several times to retrieve all of enumeration labels.

Parameters

`elem_id`	`ALSACtlElemId`
	A `ALSACtlElemId`.
	The data is owned by the caller of the function.
`elem_info`	`ALSACtlElemInfoCommon`
	An instance of object which implements `ALSACtlElemInfoCommon`.
	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`.