add stereo to waveform scope, add side metering to spectrum

src/types/settings.ts

@@ -2,6 +2,7 @@ import type { VectorscopeMode } from '../renderer/visualizers/Vectorscope'
 import type { SpectrogramClarityMode, SpectrogramScaleMode } from './spectrogram'
 import type { VUMeterMode, VUMeterOrientation } from './vumeter'
 import type { LUFSMeterMode } from './lufsmeter'
+import { DEFAULT_WAVEFORM_MODE, type WaveformMode } from './waveform'
 
 export interface ScopeSettings {
   spectrum: {
@@ -12,6 +13,7 @@ export interface ScopeSettings {
     showGrid: boolean
     smoothing: number
     fillGradient: boolean
+    showSideLine: boolean
   }
   oscilloscope: {
     pitchLock: boolean
@@ -41,6 +43,7 @@ export interface ScopeSettings {
     mode: LUFSMeterMode
   }
   waveform: {
+    mode: WaveformMode
     scrollSpeed: number
     gainDb: number
     multiband: boolean
@@ -48,11 +51,11 @@ export interface ScopeSettings {
 }
 
 export const DEFAULT_SCOPE_SETTINGS: ScopeSettings = {
-  spectrum: { fftSize: 2048, tiltDbPerOctave: 2.0, heatmap: false, heatmapTiltDbPerOctave: 2.0, showGrid: true, smoothing: 0.9, fillGradient: true },
+  spectrum: { fftSize: 2048, tiltDbPerOctave: 2.0, heatmap: false, heatmapTiltDbPerOctave: 2.0, showGrid: true, smoothing: 0.9, fillGradient: true, showSideLine: false },
   oscilloscope: { pitchLock: true, underfillEnabled: false, showGrid: true, lineWidth: 2 },
   vectorscope: { mode: 'lissajous', multiband: false, showGrid: true, persistence: 0.10, lineWidth: 1.5 },
   spectrogram: { fftSize: 2048, scrollSpeed: 2, clarityMode: 'sharper', scaleMode: 'log', colorScheme: 'heat' },
   vumeter: { mode: 'bar', orientation: 'horizontal' },
   lufsmeter: { mode: 'bar' },
-  waveform: { scrollSpeed: 1, gainDb: 0, multiband: false },
+  waveform: { mode: DEFAULT_WAVEFORM_MODE, scrollSpeed: 1, gainDb: 0, multiband: false },
 }

src/types/waveform.ts

@@ -1,3 +1,5 @@
+export type WaveformMode = 'mono' | 'stereo'
+
 export const MIN_WAVEFORM_SCROLL_SPEED = 0.5
 export const MAX_WAVEFORM_SCROLL_SPEED = 8
 export const WAVEFORM_SCROLL_SPEED_STEP = 0.5
@@ -6,6 +8,7 @@ export const MIN_WAVEFORM_GAIN_DB = -12
 export const MAX_WAVEFORM_GAIN_DB = 18
 export const WAVEFORM_GAIN_DB_STEP = 0.5
 export const DEFAULT_WAVEFORM_GAIN_DB = 0
+export const DEFAULT_WAVEFORM_MODE: WaveformMode = 'mono'
 
 export function clampWaveformScrollSpeed(value: unknown): number {
   const numeric = Number(value)