Struct alsa::hctl::HCtl

pub struct HCtl(/* private fields */);

snd_hctl_t wrapper

Implementations

impl HCtl

pub fn new(c: &str, nonblock: bool) -> Result<HCtl>

Wrapper around open that takes a &str instead of a &CStr

pub fn open(c: &CStr, nonblock: bool) -> Result<HCtl>

Open does not support async mode (it’s not very Rustic anyway) Note: You probably want to call load afterwards.

pub fn from_card(c: &Card, nonblock: bool) -> Result<HCtl>

Wrapper around open. You probably want to call load afterwards.

pub fn load(&self) -> Result<()>

pub fn elem_iter(&self) -> ElemIter<'_>

pub fn find_elem(&self, id: &ElemId) -> Option<Elem<'_>>

pub fn handle_events(&self) -> Result<u32>

pub fn wait(&self, timeout_ms: Option<u32>) -> Result<bool>

Trait Implementations

impl Descriptors for HCtl

fn count(&self) -> usize

fn fill(&self, p: &mut [pollfd]) -> Result<usize>

fn revents(&self, p: &[pollfd]) -> Result<Flags>

fn get(&self) -> Result<Vec<pollfd>>

Wrapper around count and fill - returns an array of pollfds

impl Drop for HCtl

fn drop(&mut self)

Executes the destructor for this type.

impl Send for HCtl