Struct CpalBackend 

pub struct CpalBackend { /* private fields */ }

A CPAL backend for Firewheel

Trait Implementations

impl AudioBackend for CpalBackend

type Config = CpalConfig

The configuration of the audio stream.

type StartStreamError = StreamStartError

An error when starting a new audio stream.

type StreamError = StreamError

An error that has caused the audio stream to stop.

type Instant = Instant

A type describing an instant in time.

fn available_input_devices() -> Vec<DeviceInfo>

Return a list of the available input devices.

fn available_output_devices() -> Vec<DeviceInfo>

Return a list of the available output devices.

fn start_stream( config: <CpalBackend as AudioBackend>::Config, ) -> Result<(CpalBackend, StreamInfo), <CpalBackend as AudioBackend>::StartStreamError>

Start the audio stream with the given configuration, and return a handle for the audio stream.

fn set_processor(&mut self, processor: FirewheelProcessor<CpalBackend>)

Send the given processor to the audio thread for processing.

fn poll_status( &mut self, ) -> Result<(), <CpalBackend as AudioBackend>::StreamError>

Poll the status of the running audio stream. Return an error if the audio stream has stopped for any reason.

fn delay_from_last_process( &self, process_timestamp: <CpalBackend as AudioBackend>::Instant, ) -> Option<Duration>

Return the amount of time that has elapsed from the instant FirewheelProcessor::process_interleaved was last called and now.