Module sequencer 

Parameter-lock step sequencer

Parameter-lock step sequencer

A sample-accurate, telemetry-driven sequencer for scheduling parameter changes over time. Supports parameter-lock (p-lock) style programming: each step specifies exactly which parameters change and to what value; unlisted parameters are untouched.

Concepts

• ParameterTarget — a single (node, param, value) lock
• SequenceStep — a set of p-locks + duration
• Pattern — a sequence of steps with a playback mode
• Snapshot — a named collection of p-locks (convenience presets)
• SnapshotSequencer — tick-driven state machine

Clock source

The sequencer is designed to be driven by the audio thread’s CLOCK_TICK telemetry events. Each tick carries (sample_pos, sample_rate, tempo), which the sequencer uses to determine step boundaries with sample accuracy.

Integration

Use PatchbayControl::attach_sequencer or PatchbayEngine::attach_sequencer to spawn the sequencer task and start listening for clock ticks. A SequencerHandle is returned for external control (start/stop/pattern select).

Structs

ParameterTarget

A single parameter target within a snapshot or step.

Pattern

A sequence of steps forming a pattern.

SequenceStep

A single step in a sequencer pattern.

SequencerHandle

Handle for controlling a SnapshotSequencer that lives inside a tokio task.

Snapshot

A named collection of parameter values — a complete preset “scene”.

SnapshotSequencer

The core sequencer state machine.

Enums

SequencerCommand

Commands sent to a running sequencer from another thread.

StepPlayMode

Playback mode for a pattern.