Module audio 

Audio source abstraction.

The AudioSource trait is the seam between hardware capture (real cpal callbacks) and the rest of the pipeline. Production code uses CpalAudioSource (step 7); tests drive the same pipeline through FileAudioSource, which replays samples from a fixture WAV.

See ADR-0031 for the rationale behind keeping this seam at the f32-frame level (rather than mocking cpal directly or asserting only at the CLI level).

Structs

CpalAudioSource

Production AudioSource backed by a cpal input stream.

FileAudioSource

Test AudioSource that replays a fixture WAV in fixed-size chunks.

Traits

AudioSource

Source of raw interleaved f32 audio samples at a fixed sample rate and channel count.