Struct awedio::backends::CpalBackend

pub struct CpalBackend { /* private fields */ }

A backend that uses cpal to output to devices.

This backend does not currently update the output device if the default output device of the host changes.

Implementations

impl CpalBackend

pub fn with_defaults() -> Option<CpalBackend>

Create a new CpalBackend with defaults for all fields.

Returns None if a default device or config could not be obtained.

pub fn with_default_host_and_device( channel_count: u16, sample_rate: u32, buffer_size: CpalBufferSize ) -> Option<CpalBackend>

Create a new backend.

Returns None if an output device is not found

pub fn new( channel_count: u16, sample_rate: u32, buffer_size: CpalBufferSize, device: Device ) -> CpalBackend

Create a new CpalBackend specifying all fields.

impl CpalBackend

pub fn start<E>( &mut self, error_callback: E ) -> Result<Manager, CpalBackendError>

where E: FnMut(StreamError) + Send + 'static,

Start a cpal output stream and connect it to the returned Manager.

Only a single stream is supported at a time per CpalBackend object.

Cpal stream errors will be reported by calling error_callback.