[READ-ONLY] Mirror of https://github.com/probablykasper/ferrum. Music library app for Mac, Linux and Windows
ferrum.kasper.space
electron
linux
macos
music
music-library
music-player
napi
windows
Avoid bright flash at start
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src/lib/visualizer/visualizer.ts
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src/lib/visualizer/visualizer.ts
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const def = visualizer_settings?.def || [2.5, 0.09]
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const volumeBuffer: number[] = []
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// Pre-fill buffer with some baseline values to avoid initial instability
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for (let i = 0; i < 60; i++) {
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volumeBuffer.push(0.1) // Small baseline value
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}
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function sampleVolume(totalSamples: number) {
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let value = 0
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const start = Math.max(volumeBuffer.length - 1, 0)
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function measure_volume(frameRate: number) {
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const rawVolume = getRawVolume()
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volumeBuffer.push(rawVolume)
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// Need minimum samples before doing complex calculations
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const minSamplesNeeded = Math.max(2, (def[1] * 1000) / (1000 / frameRate))
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if (volumeBuffer.length < minSamplesNeeded) {
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return 0.01 // Small default value while buffer builds up
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}
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const [ref, min] = sampleVolume((def[0] * 1000) / (1000 / frameRate))
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const [sample] = sampleVolume((def[1] * 1000) / (1000 / frameRate))
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// Avoid division by zero or very small differences
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const range = ref - min
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if (range < 0.001) {
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return 0.01 // Small default when no audio variance
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}
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const scaled = scaleLinear([min, ref], [0, 1])(sample)
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const raw = Number(Math.pow(scaled, 1.5).toFixed(3))
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return isNaN(raw) ? 1 : raw / 2
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return isNaN(raw) ? 0.1 : Math.max(0, raw / 2) // Ensure non-negative
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}
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function getRawVolume() {