Struct ElemId 

pub struct ElemId { /* private fields */ }

A boxed object to express the identifier of element.

A ElemId is a boxed object to express the identifier of element. It points to a element by two ways; by the numeric identifier, or by the combination of the type of interface, the numeric identifier of device, the numeric identifier of subdevice, the name, and the index.

The object wraps struct snd_ctl_elem_id in UAPI of Linux sound subsystem.

GLib type: Boxed type with copy-on-clone semantics.

Implementations

impl ElemId

pub fn as_ptr(&self) -> *mut ALSACtlElemId

Return the inner pointer to the underlying C value.

pub unsafe fn from_glib_ptr_borrow(ptr: &*mut ALSACtlElemId) -> &Self

Borrows the underlying C value.

pub unsafe fn from_glib_ptr_borrow_mut( ptr: &mut *mut ALSACtlElemId, ) -> &mut Self

Borrows the underlying C value mutably.

impl ElemId

pub fn new_by_name( iface: ElemIfaceType, device_id: u32, subdevice_id: u32, name: &str, index: u32, ) -> ElemId

Allocates and return an instance of ElemId by the name.

iface

The interface of element, one of ALSACtlElemIfaceType.

device_id

The numeric identifier of device to which the element belongs.

subdevice_id

The numeric identifier of subdevice to which the element belongs.

name

The name of element, up to 44 byte (=SNDRV_CTL_ELEM_ID_NAME_MAXLEN) including terminator.

index

The index of element in a set of elements with the same name.

Returns

A ElemId.

pub fn new_by_numid(numid: u32) -> ElemId

Allocates and return an instance of ElemId by the numeric identifier.

numid

The numeric identifier of the element.

Returns

A ElemId.

pub fn device_id(&self) -> u32

Get the numeric identifier of device to which the element belongs.

Returns

device_id

The numeric identifier of device to which the element belongs.

pub fn iface(&self) -> ElemIfaceType

Get the interface of element.

Returns

iface

The interface of element.

pub fn index(&self) -> u32

Get the index of element.

Returns

index

The index of element.

pub fn name(&self) -> GString

Get the name of element.

Returns

name

The name of element.

pub fn numid(&self) -> u32

Get the numeric identifier of element.

Returns

numid

The numeric identifier of element.

pub fn subdevice_id(&self) -> u32

Get the numeric identifier of element.

Returns

subdevice_id

The numeric identifier of subdevice to which the element belongs.

Trait Implementations

impl Clone for ElemId

fn clone(&self) -> Self

Copies the boxed type with the type-specific copy function.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ElemId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<ElemId> for Value

fn from(o: ElemId) -> Self

Converts to this type from the input type.

impl HasParamSpec for ElemId

type ParamSpec = ParamSpecBoxed

type SetValue = ElemId

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(&str) -> ParamSpecBoxedBuilder<'_, ElemId>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for ElemId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ElemId

fn cmp(&self, other: &ElemId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ElemId

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ElemId

fn partial_cmp(&self, other: &ElemId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for ElemId

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for ElemId

impl Send for ElemId

impl Sync for ElemId