Add Psytrance Visualizer macOS app with Metal rendering
A complete audio-reactive visualizer for psytrance music featuring: Audio Analysis (DSPEngine): - FFT spectrum analysis via Accelerate/vDSP - 64-band Mel spectrogram - Sub-bass energy extraction (<100Hz) - Automatic sidechain pump detection - Harmonic-to-Noise ratio (HNR) calculation - Peak/transient detection 8 Visualization Modes (Metal Shaders): 1. FFT Classic - Frequency spectrum bars with glow 2. Mel Spectrogram - Waterfall display 3. Sub-Bass - Pulsating rings 4. Sidechain Pump - Breathing zoom effect 5. Harmonic/Noise - Geometric vs chaotic particles 6. Mandelbrot - Audio-reactive fractal zoom 7. Tunnel Warp - Infinite tunnel with distortion 8. DMT Geometry - Sacred geometry patterns Features: - Selectable audio input device (BlackHole support) - Configurable buffer size (512/1024) - Reactivity slider for visual intensity - Auto-hiding control panel - Fullscreen support with keyboard shortcuts (1-8, F, ESC) - Persistent settings via UserDefaults - Psytrance-inspired neon/UV color palette
This commit is contained in:
Claude
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//
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// MainWindow.swift
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// PsytranceVisualizer
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//
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// Main application window with keyboard handling
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//
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import AppKit
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import Combine
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/// Main window controller for the visualizer
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final class MainWindowController: NSWindowController {
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// MARK: - Properties
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private var visualizerView: VisualizerView!
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private var controlPanel: ControlPanel!
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private var audioManager: AudioInputManager!
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private var dspEngine: DSPEngine!
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private var settingsManager: SettingsManager { .shared }
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private var cancellables = Set<AnyCancellable>()
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private var displayLink: CVDisplayLink?
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// MARK: - Initialization
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convenience init() {
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let window = NSWindow(
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contentRect: NSRect(x: 0, y: 0, width: 1280, height: 720),
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styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
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backing: .buffered,
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defer: false
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)
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window.title = "Psytrance Visualizer"
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window.minSize = NSSize(width: 800, height: 600)
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window.titlebarAppearsTransparent = true
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window.titleVisibility = .hidden
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window.isMovableByWindowBackground = true
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window.backgroundColor = .black
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window.collectionBehavior = [.fullScreenPrimary]
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// Restore window frame if saved
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if let savedFrame = SettingsManager.shared.settings.windowFrame?.cgRect {
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window.setFrame(savedFrame, display: false)
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} else {
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window.center()
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}
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self.init(window: window)
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setupContent()
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setupAudio()
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setupKeyboardHandling()
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restoreSettings()
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}
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// MARK: - Setup
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private func setupContent() {
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guard let contentView = window?.contentView else { return }
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// Visualizer view (fills entire window)
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visualizerView = VisualizerView()
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visualizerView.translatesAutoresizingMaskIntoConstraints = false
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contentView.addSubview(visualizerView)
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// Control panel (overlay at bottom)
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controlPanel = ControlPanel()
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controlPanel.translatesAutoresizingMaskIntoConstraints = false
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controlPanel.delegate = self
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contentView.addSubview(controlPanel)
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NSLayoutConstraint.activate([
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// Visualizer fills entire window
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visualizerView.topAnchor.constraint(equalTo: contentView.topAnchor),
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visualizerView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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visualizerView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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visualizerView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
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// Control panel at bottom
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controlPanel.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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controlPanel.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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controlPanel.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
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controlPanel.heightAnchor.constraint(equalToConstant: 90),
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])
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// Mouse tracking for control panel
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setupMouseTracking()
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}
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private func setupAudio() {
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audioManager = AudioInputManager()
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dspEngine = DSPEngine(bufferSize: settingsManager.settings.bufferSize)
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// Audio buffer callback
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audioManager.onAudioBuffer = { [weak self] buffer in
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guard let self = self else { return }
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let analysisData = self.dspEngine.process(buffer: buffer)
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DispatchQueue.main.async {
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self.visualizerView.updateAudioData(analysisData)
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}
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}
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// Update control panel when devices change
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audioManager.$availableDevices
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.receive(on: DispatchQueue.main)
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.sink { [weak self] devices in
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self?.controlPanel.updateDevices(
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devices,
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selectedUID: self?.settingsManager.settings.selectedAudioDeviceUID
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)
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}
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.store(in: &cancellables)
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// Start audio
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audioManager.start()
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}
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private func setupKeyboardHandling() {
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// Monitor for key events
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NSEvent.addLocalMonitorForEvents(matching: .keyDown) { [weak self] event in
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if self?.handleKeyDown(event) == true {
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return nil // Event handled
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}
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return event
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}
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}
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private func setupMouseTracking() {
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guard let contentView = window?.contentView else { return }
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let options: NSTrackingArea.Options = [.mouseMoved, .activeAlways, .inVisibleRect]
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let trackingArea = NSTrackingArea(
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rect: contentView.bounds,
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options: options,
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owner: self,
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userInfo: nil
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)
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contentView.addTrackingArea(trackingArea)
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}
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private func restoreSettings() {
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let settings = settingsManager.settings
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// Restore visualization mode
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if let mode = VisualizationMode(rawValue: settings.lastVisualizationMode) {
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visualizerView.setVisualizationMode(mode)
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controlPanel.updateMode(mode)
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}
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// Restore reactivity
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visualizerView.setReactivity(settings.reactivity)
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dspEngine.setReactivity(settings.reactivity)
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controlPanel.updateReactivity(settings.reactivity)
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// Restore buffer size
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dspEngine.setBufferSize(settings.bufferSize)
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audioManager.setBufferSize(settings.bufferSize)
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controlPanel.updateBufferSize(settings.bufferSize)
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// Restore audio device
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if let deviceUID = settings.selectedAudioDeviceUID {
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audioManager.selectDevice(uid: deviceUID)
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}
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// Restore fullscreen state
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if settings.isFullscreen {
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in
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self?.window?.toggleFullScreen(nil)
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}
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}
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}
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// MARK: - Keyboard Handling
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private func handleKeyDown(_ event: NSEvent) -> Bool {
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// Check for visualization mode shortcuts (1-8)
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if let mode = VisualizationMode.fromKeyCode(event.keyCode) {
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setVisualizationMode(mode)
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return true
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}
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// Other keyboard shortcuts
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switch event.keyCode {
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case 3: // F key
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toggleFullscreen()
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return true
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case 53: // Escape
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if window?.styleMask.contains(.fullScreen) == true {
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window?.toggleFullScreen(nil)
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}
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return true
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case 49: // Space
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// Toggle pause (could be implemented)
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return true
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default:
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break
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}
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// Cmd+F for fullscreen
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if event.modifierFlags.contains(.command) && event.keyCode == 3 {
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toggleFullscreen()
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return true
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}
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return false
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}
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// MARK: - Mode Switching
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private func setVisualizationMode(_ mode: VisualizationMode) {
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visualizerView.setVisualizationMode(mode)
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controlPanel.updateMode(mode)
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settingsManager.setVisualizationMode(mode)
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}
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// MARK: - Fullscreen
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private func toggleFullscreen() {
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window?.toggleFullScreen(nil)
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}
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// MARK: - Mouse Events
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override func mouseMoved(with event: NSEvent) {
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controlPanel.resetHideTimer()
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}
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// MARK: - Window Events
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override func windowDidLoad() {
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super.windowDidLoad()
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// Save window frame on move/resize
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(windowDidResize),
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name: NSWindow.didResizeNotification,
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object: window
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(windowDidMove),
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name: NSWindow.didMoveNotification,
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object: window
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(windowDidEnterFullScreen),
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name: NSWindow.didEnterFullScreenNotification,
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object: window
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(windowDidExitFullScreen),
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name: NSWindow.didExitFullScreenNotification,
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object: window
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)
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}
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@objc private func windowDidResize(_ notification: Notification) {
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if let frame = window?.frame {
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settingsManager.setWindowFrame(frame)
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}
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}
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@objc private func windowDidMove(_ notification: Notification) {
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if let frame = window?.frame {
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settingsManager.setWindowFrame(frame)
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}
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}
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@objc private func windowDidEnterFullScreen(_ notification: Notification) {
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settingsManager.setFullscreen(true)
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controlPanel.hide()
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}
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@objc private func windowDidExitFullScreen(_ notification: Notification) {
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settingsManager.setFullscreen(false)
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controlPanel.show()
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}
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// MARK: - Cleanup
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deinit {
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audioManager.stop()
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settingsManager.saveNow()
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}
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}
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// MARK: - ControlPanelDelegate
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extension MainWindowController: ControlPanelDelegate {
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func controlPanel(_ panel: ControlPanel, didSelectDevice uid: String) {
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audioManager.selectDevice(uid: uid)
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settingsManager.setAudioDevice(uid: uid)
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}
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func controlPanel(_ panel: ControlPanel, didSelectBufferSize size: Int) {
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audioManager.setBufferSize(size)
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dspEngine.setBufferSize(size)
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settingsManager.setBufferSize(size)
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}
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func controlPanel(_ panel: ControlPanel, didSelectMode mode: VisualizationMode) {
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setVisualizationMode(mode)
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}
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func controlPanel(_ panel: ControlPanel, didChangeReactivity value: Float) {
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visualizerView.setReactivity(value)
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dspEngine.setReactivity(value)
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settingsManager.setReactivity(value)
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}
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func controlPanelDidRequestFullscreen(_ panel: ControlPanel) {
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toggleFullscreen()
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}
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}
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