Implement structured parsing and typing for pattern events (Note, Fader, MIDI, Unknown)

src/types/types.ts

@@ -74,9 +74,67 @@ export type Pattern = {
   bars: number;
 };
 
+export enum PatternEventKind {
+  Note = 0,
+  Fader = 1,
+  Midi = 2,
+}
+
+export type PatternEventBase = {
+  position: number;
+  source: number;
+  flags: number;
+  rawData: Uint8Array;
+};
+
+export type NotePatternEvent = PatternEventBase & {
+  type: 'note';
+  kind: PatternEventKind.Note;
+  pad: number;
+  note: number;
+  velocity: number;
+  duration: number;
+};
+
+export type FaderAutomationEvent = PatternEventBase & {
+  type: 'fader';
+  kind: PatternEventKind.Fader;
+  parameter: number;
+  reserved: number;
+  rawValue: number;
+  value: number;
+};
+
+export type MidiPatternEvent = PatternEventBase & {
+  type: 'midi';
+  kind: PatternEventKind.Midi;
+  data: Uint8Array;
+};
+
+export type UnknownPatternEvent = PatternEventBase & {
+  type: 'unknown';
+  kind: number;
+  data: Uint8Array;
+};
+
+export type PatternEvent =
+  | NotePatternEvent
+  | FaderAutomationEvent
+  | MidiPatternEvent
+  | UnknownPatternEvent;
+
+export type SceneGroupPatternData = {
+  group: Group;
+  patternNumber: number;
+  bars: number;
+  recordCount: number;
+  events: PatternEvent[];
+};
+
 export type Scene = {
   name: string;
   patterns: Pattern[];
+  patternEvents: Partial<Record<Group, SceneGroupPatternData>>;
 };
 
 export type Note = {