spessasynth_lib/sequencer/README.md

This is the sequencer's folder.

The code here is responsible for playing back the parsed MIDI sequence with the synthesizer.

Message protocol:

Message structure

const message = {
    messageType: number, // WorkletSequencerMessageType
    messageData: any     // any
}

To worklet

Sequencer uses Synthetizer's post method to post a message with messageData set to workletMessageType.sequencerSpecific. The messageData is set to the sequencer's message.

From worklet

WorkletSequencer uses SpessaSynthProcessor's post to send a message with messageData set to returnMessageType.sequencerSpecific. The messageData is set to the sequencer's return message.

Process tick

processTick is called every time the process method is called via SpessaSynthProcessor.processTickCallback.