Module plugin 

Core plugin trait definitions.

This module defines the two-phase plugin lifecycle:

• Plugin (unprepared state): Holds parameters, created before audio config is known. Transforms into a processor via Plugin::prepare() when configuration arrives.

• AudioProcessor (prepared state): Ready for audio processing with real sample rate and buffer configuration. Created by Plugin::prepare(), can return to unprepared state via AudioProcessor::unprepare() for sample rate changes.

This design eliminates placeholder values by making it impossible to process audio until proper configuration is available.

Structs

AudioSetup

Standard audio setup configuration with sample rate and max buffer size.

BusInfo

Information about an audio bus.

BusLayout

Bus layout information for plugins that need channel configuration.

FullAudioSetup

Full audio setup including bus layout information.

Midi1Assignment

MIDI 1.0 CC assignment.

Midi2Assignment

MIDI 2.0 controller assignment.

MidiControllerAssignment

Base assignment info for MIDI controller → parameter mapping.

NoConfig

Configuration for plugins that don’t need audio setup information.

Enums

BusType

Audio bus type.

Traits

AudioProcessor

The prepared processor - ready for audio processing.

HasParameters

Trait for types that hold parameters.

Plugin

The unprepared plugin - holds parameters before audio config is known.

ProcessorConfig

Marker trait for processor configuration types.