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//! Native audio capture, encoding, and decoding for Media over QUIC.
//!
//! Counterpart to [`moq-video`](https://crates.io/crates/moq-video) for audio
//! tracks, and shaped the same way. Sits on top of [`moq_mux`] and [`hang`] and
//! adds the missing piece for native callers: Rust-native Opus and uncompressed
//! PCM codecs that turn raw samples into HANG audio tracks and back.
//!
//! - `capture` describes an audio source (`capture::Config`) and grabs buffers
//! per platform: a microphone via cpal (CoreAudio / WASAPI / ALSA) everywhere,
//! or macOS system audio via ScreenCaptureKit. `capture::Source` picks between
//! them and `capture::devices` lists the inputs and hands back the ids it
//! takes. Requires the `capture` feature, so these names are unlinked here:
//! they don't exist in a default build.
//! - [`encode`] encodes PCM and publishes it through `moq_mux::container`,
//! registering the rendition in the `hang` catalog. Two entry points:
//! - `encode::publish_capture` captures a microphone and publishes it
//! (turnkey). It encodes strictly on demand: the track and catalog are
//! advertised up front, but the device opens only while a subscriber is
//! listening and is released when the last one leaves.
//! - [`encode::Producer`] publishes PCM you hand it.
//! - [`decode`] subscribes to an encoded track and decodes it back to PCM.
//! [`decode::Consumer`] is the mirror of [`encode::Producer`].
//! - `playback` plays decoded PCM out a speaker. `playback::Engine` owns the
//! output device and mixes the `playback::Sink`s registered with it, so one
//! device serves every track in a call. Requires the `playback` feature, so
//! these names are unlinked here too.
//! - `aec` keeps the speaker out of the microphone, which is what a conference
//! on a laptop needs to not send itself back. `playback::Engine::canceller`
//! builds an `aec::Canceller` from the mix it is playing and
//! `capture::Config::aec` hands it to the microphone. Requires the `aec`
//! feature, which implies both of the above.
//!
//! [`Format`] mirrors WebCodecs `AudioData.format`; the helpers convert between
//! any supported layout and the interleaved `f32` representation libopus
//! expects. [`Frame`] is a thin owned buffer: a timestamp and a payload. PCM
//! layout lives on the producer / consumer via [`encode::Input`] /
//! [`decode::Config`], not on each frame, so callers can't drift between calls.
pub use Error;
pub use Format;
pub use Frame;
pub use Resampler;