Struct Config 

pub struct Config<'d> {
    pub sample_rates_hz: &'d [u32],
    pub sample_width: SampleWidth,
    pub channels: &'d [Channel],
    pub input_terminal: TerminalType,
    pub feature_unit: Vec<FeatureUnitControls, MAX_AUDIO_CHANNEL_COUNT, u8>,
}

Everything the audio source advertises to the host.

The stream has no synch (feedback) endpoint: an asynchronous source has none [USB 2.0 5.12.4.2] — the data stream itself carries the rate, and the host follows it.

Fields

sample_rates_hz: &'d [u32]

The supported sample rates in Hz, as discrete values. At least one, at most ten. The first is the one reported before the host sets any.

sample_width: SampleWidth

The audio sample resolution.

channels: &'d [Channel]

The audio channels, in stream order (up to 12). The host numbers the logical channels by wChannelConfig bit order, so the entries must be unique and in that order. One entry is a mono stream.

input_terminal: TerminalType

What the Input Terminal is; the host shows the device by it. Must not be TerminalType::UsbStreaming — that is the Output Terminal’s role.

feature_unit: Vec<FeatureUnitControls, MAX_AUDIO_CHANNEL_COUNT, u8>

Controls the USB host can change on each channel.

Use heapless::Vec::new() to omit the Feature Unit. Otherwise, provide channels.len() + 1 entries: the master first, then each audio channel in Self::channels order. Use FeatureUnitControls::empty for no controls on a channel.

Implementations

impl<'d> Config<'d>

pub const fn new( sample_rates_hz: &'d [u32], sample_width: SampleWidth, channels: &'d [Channel], ) -> Self

Creates a microphone configuration without a Feature Unit.

Trait Implementations

impl<'d> Clone for Config<'d>

fn clone(&self) -> Config<'d>

Returns a duplicate of the value.

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

Performs copy-assignment from source.