1182 lines
77 KiB
Swift
1182 lines
77 KiB
Swift
import SwiftUI
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import AVFoundation
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import CoreAudio
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import CoreMIDI
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import UniformTypeIdentifiers
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import Combine
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/// Equal-power crossfade, independent of the karaoke master and singer preferences.
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enum DJMix {
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static func weights(_ position: Double,curve: String = "Equal power") -> (Double, Double) {
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let x = position.isFinite ? min(1,max(0,position)) : 0.5
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if curve == "Linear" { return (1-x,x) }
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return (cos(x * .pi / 2),sin(x * .pi / 2))
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}
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static func syncRate(bpm: Double, otherBPM: Double, otherRate: Double) -> Double? {
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guard bpm.isFinite,otherBPM.isFinite,otherRate.isFinite,bpm >= 40,bpm <= 240,otherBPM >= 40,otherBPM <= 240 else { return nil }
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let result = otherBPM * otherRate / bpm
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return (0.5...2).contains(result) ? result : nil
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}
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}
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struct DJPreferences: Codable, Equatable {
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var autoPlayOnLoad = false
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var resetEQOnLoad = false
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var protectPlayingDeck = true
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var tempoRange: Double = 16
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var invertTempo = true
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var crossfaderCurve = "Equal power"
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var headroomDB: Double = 0
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var spectralWaveforms = true
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var waveformSeconds: Double = 8
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var showTimeGrid = true
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var platterMarker = true
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var dimInactiveDeck = false
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var libraryFont: Double = 11
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var libraryRowHeight: Double = 28
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var autoPlayHotCue = false
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func tempo(at position: Double) -> Double { let x = min(1,max(0,position));return 1+((invertTempo ? 1-x : x)*2-1)*tempoRange/100 }
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func position(for tempo: Double) -> Double { let x = min(1,max(0,(tempo-1)/(2*tempoRange/100)+0.5));return invertTempo ? 1-x : x }
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var sanitized: Self {
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var p = self;p.tempoRange = [8.0,16,50].contains(tempoRange) ? tempoRange : 16
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p.headroomDB = [0.0,3,6,9].contains(headroomDB) ? headroomDB : 0
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p.waveformSeconds = [4.0,8,16,32].contains(waveformSeconds) ? waveformSeconds : 8
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p.libraryFont = libraryFont.isFinite ? min(16,max(10,libraryFont)) : 11
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p.libraryRowHeight = libraryRowHeight.isFinite ? min(44,max(24,libraryRowHeight)) : 28
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if !["Equal power","Linear"].contains(crossfaderCurve) { p.crossfaderCurve = "Equal power" };return p
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}
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}
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@MainActor final class DJChannel: ObservableObject {
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let player = Player(persistsMix:false)
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let letter: String
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@Published private(set) var song: Song?
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@Published var bpm: Double = 120
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@Published var bpmConfirmed = false
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@Published var bpmEstimated = false
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@Published var analysingBPM = false
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@Published var artwork: NSImage?
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private var infoTask: Task<Void,Never>?
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private var analysisTask: Task<Double?,Never>?
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@Published var gain: Double = 0 { didSet { player.inputGain = gain } }
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@Published var level: Double = 0.8 { didSet { updateLevel() } }
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@Published var loopBeats = 8
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var master: Double = 0.8 { didSet { updateLevel() } }
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var crossWeight: Double = 1 { didSet { updateLevel() } }
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private var taps = [Double]()
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init(_ letter: String) { self.letter = letter;player.autoFade = false;updateLevel() }
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func updateLevel() { player.volume = min(1,max(0,level * master * crossWeight)) }
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func load(_ song: Song) throws {
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var audioOnly = song;audioOnly.cdg = nil
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do { try player.load(audioOnly,startPlaying:false) } catch { self.song = nil;throw error }
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self.song = song;bpmConfirmed = false;bpmEstimated = false;bpm = 120;taps = [];loadTrackInfo(song)
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}
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func unload() { infoTask?.cancel();analysisTask?.cancel();player.stop();song = nil;bpmConfirmed = false;artwork = nil;analysingBPM = false }
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private func loadTrackInfo(_ song: Song) {
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infoTask?.cancel();analysisTask?.cancel();artwork = nil;analysingBPM = true
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infoTask = Task { @MainActor [weak self] in
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let image = await DJTrackInfo.artwork(song)
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guard !Task.isCancelled,let self,self.song?.id == song.id else { return }
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self.artwork = image
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let task = Task.detached(priority:.utility) { try? DJBPM.analyse(URL(fileURLWithPath:song.audio),cancelled:{Task.isCancelled}) };self.analysisTask = task
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let bpm = await task.value
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guard !Task.isCancelled,self.song?.id == song.id else { return }
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self.analysingBPM = false
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if !self.bpmConfirmed,let bpm { self.bpm = bpm;self.bpmEstimated = true;self.bpmConfirmed = true }
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}
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}
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deinit { infoTask?.cancel();analysisTask?.cancel() }
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func tap(at time: Double = ProcessInfo.processInfo.systemUptime) {
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if let last = taps.last,time-last > 2 { taps = [] }
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taps.append(time);taps = Array(taps.suffix(8))
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guard taps.count >= 3,let first = taps.first,let last = taps.last,last > first else { return }
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let value = 60 * Double(taps.count-1)/(last-first)
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if (40...240).contains(value) { bpm = (value*10).rounded()/10;bpmConfirmed = true;bpmEstimated = false }
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}
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func beatLoop() {
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if player.loopEnabled { player.clearLoop();return }
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guard bpmConfirmed,player.canJog else { return }
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let start = player.time,end = min(player.duration,start+Double(loopBeats)*60/bpm)
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player.defineLoop(start:start,end:end)
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}
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}
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struct DJAudioDevice: Identifiable, Equatable {
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var id: AudioDeviceID
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var uid: String
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var name: String
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static func outputs() -> [Self] {
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var address = AudioObjectPropertyAddress(mSelector:kAudioHardwarePropertyDevices,mScope:kAudioObjectPropertyScopeGlobal,mElement:kAudioObjectPropertyElementMain)
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var size: UInt32 = 0
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guard AudioObjectGetPropertyDataSize(AudioObjectID(kAudioObjectSystemObject),&address,0,nil,&size) == noErr else { return [] }
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var ids = [AudioDeviceID](repeating:0,count:Int(size)/MemoryLayout<AudioDeviceID>.size)
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let result = ids.withUnsafeMutableBytes { AudioObjectGetPropertyData(AudioObjectID(kAudioObjectSystemObject),&address,0,nil,&size,$0.baseAddress!) }
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guard result == noErr else { return [] }
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return ids.compactMap { id in
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var streams = AudioObjectPropertyAddress(mSelector:kAudioDevicePropertyStreams,mScope:kAudioDevicePropertyScopeOutput,mElement:kAudioObjectPropertyElementMain)
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var count: UInt32 = 0
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guard AudioObjectGetPropertyDataSize(id,&streams,0,nil,&count) == noErr,count > 0 else { return nil }
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func string(_ selector: AudioObjectPropertySelector) -> String? {
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var property = AudioObjectPropertyAddress(mSelector:selector,mScope:kAudioObjectPropertyScopeGlobal,mElement:kAudioObjectPropertyElementMain)
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var text: Unmanaged<CFString>?;var bytes = UInt32(MemoryLayout<CFString?>.size)
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guard AudioObjectGetPropertyData(id,&property,0,nil,&bytes,&text) == noErr else { return nil }
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return text?.takeRetainedValue() as String?
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}
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return .init(id:id,uid:string(kAudioDevicePropertyDeviceUID) ?? String(id),name:string(kAudioObjectPropertyName) ?? "Audio output")
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}
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}
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static func defaultOutput() -> AudioDeviceID? {
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var address = AudioObjectPropertyAddress(mSelector:kAudioHardwarePropertyDefaultOutputDevice,mScope:kAudioObjectPropertyScopeGlobal,mElement:kAudioObjectPropertyElementMain)
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var id = AudioDeviceID(0),size = UInt32(MemoryLayout<AudioDeviceID>.size)
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return AudioObjectGetPropertyData(AudioObjectID(kAudioObjectSystemObject),&address,0,nil,&size,&id) == noErr && id != 0 ? id : nil
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}
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}
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@MainActor final class DJSystem: ObservableObject {
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let a = DJChannel("A"),b = DJChannel("B")
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let preview = Player(persistsMix:false)
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let midi = DJMIDI()
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@Published var crossfader: Double = 0.5 { didSet { applyMix() } }
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@Published var master: Double = 0.8 { didSet { applyMix() } }
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@Published private(set) var syncActive = false
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private var syncOriginal: (Double,Double)?
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private var syncObservers = Set<AnyCancellable>()
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private var updatingSync = false
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@Published var pendingReplacement: DJReplacement?
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@Published var cueEditor: String?
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@Published var cueDraft: Double = 0
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@Published var cueEditing = false
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@Published var cueLevel: Double = 0.6 { didSet { preview.volume = cueLevel } }
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@Published private(set) var previewDeck: String?
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@Published var devices = [DJAudioDevice]()
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@Published var masterUID = ""
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@Published var cueUID = ""
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@Published var settings = DJPreferences() { didSet { saveSettings();applyMix();for deck in [a,b] { deck.player.tempo = min(1+settings.tempoRange/100,max(1-settings.tempoRange/100,deck.player.tempo)) } } }
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@Published var status = "Load music into A or B. Karaoke keeps its own mixer and output."
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@Published var error: String?
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let root: URL
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private(set) var library: Library?
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let dragSession = UUID().uuidString
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@Published var songs = [Song]()
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@Published var playlists = [PersonPlace]()
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@Published var importProgress: ImportProgress?
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@Published private(set) var importing = false
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private var importTask: Task<Void,Never>?
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init(storageURL: URL? = nil) {
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root = storageURL ?? FileManager.default.urls(for:.applicationSupportDirectory,in:.userDomainMask)[0].appendingPathComponent("KJamsClone/DJ")
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preview.autoFade = false;preview.volume = cueLevel;refreshDevices();applyMix()
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Publishers.CombineLatest4(a.$bpm,b.$bpm,a.player.$tempo,b.player.$tempo).dropFirst().sink { [weak self] _ in
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Task { @MainActor [weak self] in self?.maintainSync() }
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}.store(in:&syncObservers)
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perform {
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try FileManager.default.createDirectory(at:root,withIntermediateDirectories:true)
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library = try Library(url:root.appendingPathComponent("Library.sqlite"));try refresh()
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if let data = try? Data(contentsOf:root.appendingPathComponent("DJSettings.json")),let saved = try? JSONDecoder().decode(DJPreferences.self,from:data) { settings = saved.sanitized }
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applyMix()
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}
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}
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private func saveSettings() { perform { let data = try JSONEncoder().encode(settings.sanitized);try data.write(to:root.appendingPathComponent("DJSettings.json"),options:.atomic) } }
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func refresh() throws { songs = try library?.songs() ?? [];playlists = try library?.entities("playlists") ?? [] }
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func createPlaylist(_ name: String) { perform { try library?.addEntity("playlists",name:name);try refresh() } }
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func rename(_ table: String,id: Int64,name: String) { perform { try library?.rename(table,id:id,name:name);try refresh() } }
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func delete(_ table: String,id: Int64) { perform { try library?.deleteEntity(table,id:id);try refresh() } }
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func addToPlaylist(_ playlist: Int64,song: Int64) { perform { try library?.addToPlaylist(playlist,song:song);try refresh() } }
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func dragReference(_ song: Int64) -> SongDragReference { .init(song:song,library:dragSession,singer:nil,venue:nil,fromTonight:false) }
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func importFiles(_ urls: [URL],loadInto: String? = nil,overridePlaying: Bool = false) {
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guard !importing,!urls.isEmpty else { return }
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importing = true;importProgress = .init()
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let database = root.appendingPathComponent("Library.sqlite"),media = root.appendingPathComponent("Media")
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importTask = Task.detached(priority:.utility) { [weak self] in
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let access = urls.filter{$0.startAccessingSecurityScopedResource()}
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defer { for url in access { url.stopAccessingSecurityScopedResource() } }
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var latest = ImportProgress()
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var importedIDs = [Int64]()
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do {
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let db = try Library(url:database)
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importedIDs = try Importer(media:media,audioExtensions:["mp3","wav","m4a","mp4","m4v","mov","aiff","aif","caf","flac","aac"],includeGraphics:false).run(urls,library:db,cancelled:{Task.isCancelled}) { value in
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latest = value
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Task { @MainActor [weak self] in if self?.importing == true { self?.importProgress = value } }
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}
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} catch is CancellationError { latest.cancelled = true;latest.current = "DJ import cancelled" }
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catch { latest.failure = error.localizedDescription;latest.current = "DJ import stopped" }
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latest.finished = true;let result = latest,loadedIDs = importedIDs
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await MainActor.run { [weak self] in
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guard let self else { return };self.importing = false;self.importTask = nil;self.importProgress = result
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self.perform { try self.refresh() }
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if let failure = result.failure { self.error = failure }
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else if let loadInto,let song = self.songs.first(where:{loadedIDs.contains($0.id)}) { self.load(song,into:loadInto,overridePlaying:overridePlaying) }
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}
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}
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}
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func cancelImport() { importTask?.cancel() }
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deinit { importTask?.cancel() }
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func perform(_ action: () throws -> Void) { do { try action() } catch { self.error = error.localizedDescription } }
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func applyMix() { let weights = DJMix.weights(crossfader,curve:settings.crossfaderCurve);let output = master*pow(10,-settings.headroomDB/20);a.master = output;b.master = output;a.crossWeight = weights.0;b.crossWeight = weights.1 }
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func channel(_ letter: String) -> DJChannel { letter == "A" ? a : b }
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func load(_ song: Song,into letter: String,overridePlaying: Bool = false) {
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perform {
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let deck = channel(letter)
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if settings.protectPlayingDeck,deck.player.playing,!overridePlaying { pendingReplacement = .init(deck:letter,song:song,urls:[]);return }
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if syncActive { disableSync() }
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if previewDeck == letter { stopPreview() }
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try deck.load(song)
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if !masterUID.isEmpty {
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do { try deck.player.routeOutput(try device(masterUID)) } catch { deck.unload();throw error }
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}
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if settings.resetEQOnLoad { deck.player.resetTone() }
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if settings.autoPlayOnLoad { deck.player.toggle() }
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status = "\(song.title) ready on \(letter) · set or tap BPM for tempo sync and beat loops"
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}
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}
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func refreshDevices() { devices = DJAudioDevice.outputs();midi.refreshSources() }
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private func device(_ uid: String) throws -> AudioDeviceID {
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if uid.isEmpty,let id = DJAudioDevice.defaultOutput() { return id }
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guard let output = devices.first(where:{$0.uid == uid}) else { throw LibraryError.message("Selected audio output is disconnected. Refresh and choose an available output.") }
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return output.id
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}
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func routeMaster(_ uid: String) {
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let old = masterUID
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perform {
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let id = try device(uid)
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stopPreview()
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do { try a.player.routeOutput(id);try b.player.routeOutput(id);masterUID = uid }
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catch { if let prior = try? device(old) { try? a.player.routeOutput(prior);try? b.player.routeOutput(prior) };throw error }
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}
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}
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func stopPreview() { preview.stop();previewDeck = nil }
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func startPreview(_ deck: DJChannel) {
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if previewDeck == deck.letter { stopPreview();return }
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perform {
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guard !cueUID.isEmpty else { throw LibraryError.message("Choose a separate headphone output in Audio Routing first.") }
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guard let song = deck.song else { throw LibraryError.message("Load a track first.") }
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let output = try device(cueUID)
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guard output != (try device(masterUID)) else { throw LibraryError.message("Headphone preview requires a different output device from the master. Multichannel pairs on one device are not yet supported.") }
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stopPreview();var audio = song;audio.cdg = nil
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try preview.load(audio,startPlaying:false)
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try preview.routeOutput(output)
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preview.tempo = deck.player.tempo;preview.lowGain = deck.player.lowGain;preview.midGain = deck.player.midGain;preview.highGain = deck.player.highGain;preview.filter = deck.player.filter
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preview.seek(deck.player.time);preview.toggle();previewDeck = deck.letter
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status = "Headphone preview \(deck.letter) · independent playback from the deck’s current position"
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}
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}
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func sync(_ deck: DJChannel) {
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if syncActive { disableSync();return }
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guard a.player.canJog,b.player.canJog else { status = "Load both decks before enabling Sync.";return }
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guard a.bpmConfirmed,b.bpmConfirmed else { status = "Waiting for BPM analysis. Set or tap BPM on both decks if a tempo cannot be detected.";return }
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let target = a.bpm*a.player.tempo,rate = target/b.bpm
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guard rate.isFinite,(0.5...2).contains(rate) else { status = "These tracks require a tempo outside the supported 50–200% range.";return }
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syncOriginal = (a.player.tempo,b.player.tempo)
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syncActive = true;updatingSync = true;b.player.tempo = rate;updatingSync = false
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status = String(format:"SYNC ON · Both decks %.1f BPM · A is master",target)
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}
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func disableSync() {
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guard syncActive else { return };syncActive = false
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if let original = syncOriginal { a.player.tempo = original.0;b.player.tempo = original.1 }
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syncOriginal = nil;status = "SYNC OFF · Both decks restored to their pre-sync tempos"
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}
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private func maintainSync() {
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guard syncActive,!updatingSync,a.bpmConfirmed,b.bpmConfirmed else { return }
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let rate = a.bpm*a.player.tempo/b.bpm
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guard rate.isFinite,(0.5...2).contains(rate) else { disableSync();return }
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if abs(b.player.tempo-rate) > 0.00001 { updatingSync = true;b.player.tempo = rate;updatingSync = false }
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}
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func toggleLoop(_ deck: DJChannel) {
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guard deck.player.canJog else { status = "Load a track first.";return }
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guard deck.player.loopEnabled || deck.bpmConfirmed else { status = "Waiting for BPM analysis. Enter or tap the track BPM, or define a loop with IN and OUT.";return }
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deck.beatLoop();status = deck.player.loopEnabled ? "Deck \(deck.letter) · \(deck.loopBeats)-beat loop active" : "Deck \(deck.letter) · Loop off"
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}
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func editCue(_ deck: DJChannel) { cueEditor = deck.letter;cueDraft = deck.player.cuePosition;cueEditing = true }
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func saveCue() { if let cueEditor { channel(cueEditor).player.setCue(at:cueDraft) };cueEditing = false }
|
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func hotCue(_ index: Int,deck: DJChannel) {
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let existing = deck.player.hotCues.indices.contains(index) && deck.player.hotCues[index] != nil
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deck.player.hotCue(index)
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if existing,settings.autoPlayHotCue,!deck.player.playing { deck.player.toggle() }
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}
|
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func action(_ name: String,value: Double = 1,relative: Bool = false,selected: Song? = nil) {
|
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if name == "Crossfader" { crossfader = min(1,max(0,value));return }
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if name == "Master" { master = min(1,max(0,value));return }
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let parts = name.split(separator:" ",maxSplits:1).map(String.init)
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guard parts.count == 2 else { return };let d = channel(parts[0]),p = d.player
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switch parts[1] {
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case "Play": p.toggle()
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case "Stop": p.stopDeck()
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case "Cue": p.returnToCue()
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case "Set cue": p.setCue()
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case "Sync": sync(d)
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case "Loop": toggleLoop(d)
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case "Headphones": startPreview(d)
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case "Load": if let selected { load(selected,into:d.letter) }
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case "Gain": d.gain = value*24-12
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case "High": p.highGain = value*24-12
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||
case "Mid": p.midGain = value*24-12
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case "Low": p.lowGain = value*24-12
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case "Filter": p.filter = value*2-1
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case "Level": d.level = value
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case "Tempo": if syncActive,d.letter == "B" { a.player.tempo = b.bpm*settings.tempo(at:value)/a.bpm;maintainSync() } else { p.tempo = settings.tempo(at:value) }
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case "Jog": p.jog(relative ? value*0.05 : (value-0.5)*0.2)
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case "Hot cue 1": hotCue(0,deck:d)
|
||
case "Hot cue 2": hotCue(1,deck:d)
|
||
case "Hot cue 3": hotCue(2,deck:d)
|
||
case "Hot cue 4": hotCue(3,deck:d)
|
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default: break
|
||
}
|
||
}
|
||
}
|
||
|
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// Streaming MIDI 1.0 decoder: preserves running status across packets; ignores clock and SysEx.
|
||
struct DJMIDIMessage: Equatable { var status: UInt8;var data1: UInt8;var data2: UInt8 }
|
||
struct DJMIDIDecoder {
|
||
private var status: UInt8 = 0
|
||
private var data = [UInt8]()
|
||
mutating func feed(_ bytes: [UInt8]) -> [DJMIDIMessage] {
|
||
var result = [DJMIDIMessage]()
|
||
for byte in bytes {
|
||
if byte >= 0xF8 { continue }
|
||
if byte & 0x80 != 0 { status = byte < 0xF0 ? byte : 0;data = [];continue }
|
||
guard status != 0 else { continue };data.append(byte)
|
||
let count = [0xC0,0xD0].contains(status & 0xF0) ? 1 : 2
|
||
if data.count == count {
|
||
if [0x80,0x90,0xB0].contains(status & 0xF0) { result.append(.init(status:status,data1:data[0],data2:data.count > 1 ? data[1] : 0)) }
|
||
data = []
|
||
}
|
||
}
|
||
return result
|
||
}
|
||
}
|
||
struct DJMIDIMapping: Codable, Identifiable, Equatable {
|
||
var source: Int32;var status: UInt8;var number: UInt8;var action: String;var mode: String
|
||
var id: String { "\(source):\(status):\(number)" }
|
||
static func value(_ byte: UInt8,mode: String) -> Double {
|
||
if mode == "Relative signed" { return byte < 64 ? Double(byte) : Double(Int(byte)-128) }
|
||
if mode == "Relative offset" { return Double(Int(byte)-64) }
|
||
return Double(byte)/127
|
||
}
|
||
}
|
||
@MainActor final class DJMIDI: ObservableObject {
|
||
struct Source: Identifiable { var id: Int32;var endpoint: MIDIEndpointRef;var name: String }
|
||
@Published var sources = [Source]()
|
||
@Published private(set) var sourceID: Int32 = 0
|
||
@Published var mappings = [DJMIDIMapping]()
|
||
@Published var learning: String?
|
||
@Published var learnMode = "Absolute"
|
||
@Published var status = "Choose a MIDI source; learn each control. No assumed factory mapping."
|
||
var onAction: ((String,Double,Bool) -> Void)?
|
||
private var client = MIDIClientRef(0),port = MIDIPortRef(0),connected = MIDIEndpointRef(0)
|
||
private var decoder = DJMIDIDecoder()
|
||
private let defaults: UserDefaults
|
||
init(defaults: UserDefaults = .standard,connect: Bool = true) {
|
||
self.defaults = defaults
|
||
if let data = defaults.data(forKey:"DJ.MIDIMappings.v1"),let saved = try? JSONDecoder().decode([DJMIDIMapping].self,from:data) { mappings = saved }
|
||
guard connect else { return }
|
||
let result = MIDIClientCreateWithBlock("KJMix DJ" as CFString,&client) { [weak self] _ in Task { @MainActor in self?.refreshSources() } }
|
||
guard result == noErr else { status = "MIDI unavailable (\(result))";return }
|
||
let input = MIDIInputPortCreateWithBlock(client,"DJ controls" as CFString,&port) { [weak self] list,_ in
|
||
var bytes = [UInt8]()
|
||
// Walk the original variable-length packet list, never a copied 256-byte tuple.
|
||
var packet = UnsafeRawPointer(list).advanced(by:MemoryLayout<MIDIPacketList>.offset(of: \.packet)!).assumingMemoryBound(to:MIDIPacket.self)
|
||
for _ in 0..<list.pointee.numPackets {
|
||
let data = UnsafeRawPointer(packet).advanced(by:MemoryLayout<MIDIPacket>.offset(of: \.data)!)
|
||
bytes.append(contentsOf:UnsafeRawBufferPointer(start:data,count:Int(packet.pointee.length)))
|
||
packet = UnsafePointer(MIDIPacketNext(packet))
|
||
}
|
||
let received = bytes
|
||
Task { @MainActor in self?.receive(received) }
|
||
}
|
||
if input != noErr { status = "MIDI input unavailable (\(input))" }
|
||
refreshSources()
|
||
}
|
||
func refreshSources() {
|
||
sources = (0..<MIDIGetNumberOfSources()).map { index in
|
||
let endpoint = MIDIGetSource(index);var uid: Int32 = 0;var name: Unmanaged<CFString>?
|
||
MIDIObjectGetIntegerProperty(endpoint,kMIDIPropertyUniqueID,&uid)
|
||
MIDIObjectGetStringProperty(endpoint,kMIDIPropertyDisplayName,&name)
|
||
return Source(id:uid,endpoint:endpoint,name:name?.takeRetainedValue() as String? ?? "MIDI source")
|
||
}
|
||
if connected != 0,!sources.contains(where:{$0.endpoint == connected}) { select(0);status = "Controller disconnected; choose a source after reconnecting." }
|
||
}
|
||
func select(_ id: Int32) {
|
||
if connected != 0 { MIDIPortDisconnectSource(port,connected) };connected = 0;sourceID = 0;decoder = .init();learning = nil
|
||
guard let source = sources.first(where:{$0.id == id}) else { return }
|
||
let result = MIDIPortConnectSource(port,source.endpoint,nil)
|
||
if result == noErr { connected = source.endpoint;sourceID = id;status = "Connected: \(source.name)" }
|
||
else { status = "Could not connect MIDI source (\(result))" }
|
||
}
|
||
func receive(_ bytes: [UInt8]) {
|
||
for message in decoder.feed(bytes) {
|
||
let type = message.status & 0xF0
|
||
guard type == 0xB0 || (type == 0x90 && message.data2 > 0) else { continue }
|
||
if let action = learning {
|
||
let mapping = DJMIDIMapping(source:sourceID,status:message.status,number:message.data1,action:action,mode:action.hasSuffix(" Jog") ? learnMode : "Absolute")
|
||
mappings.removeAll{$0.id == mapping.id || ($0.source == sourceID && $0.action == action)};mappings.append(mapping);save();learning = nil;status = "Learned \(action) · channel \((message.status & 0x0F)+1), control \(message.data1)"
|
||
continue
|
||
}
|
||
guard let map = mappings.first(where:{$0.source == sourceID && $0.status == message.status && $0.number == message.data1}) else { continue }
|
||
let continuous = ["Gain","High","Mid","Low","Filter","Level","Tempo","Jog"].contains(map.action.split(separator:" ",maxSplits:1).last.map(String.init) ?? "") || ["Crossfader","Master"].contains(map.action)
|
||
if !continuous && message.data2 == 0 { continue }
|
||
onAction?(map.action,DJMIDIMapping.value(message.data2,mode:map.mode),map.mode != "Absolute")
|
||
}
|
||
}
|
||
func remove(_ id: String) { mappings.removeAll{$0.id == id};save() }
|
||
private func save() { if let data = try? JSONEncoder().encode(mappings) { defaults.set(data,forKey:"DJ.MIDIMappings.v1") } }
|
||
deinit { if port != 0 { MIDIPortDispose(port) };if client != 0 { MIDIClientDispose(client) } }
|
||
}
|
||
|
||
private enum DJStyle {
|
||
static let background = Color(red:0.055,green:0.065,blue:0.085)
|
||
static let panel = Color(red:0.095,green:0.11,blue:0.14)
|
||
static let a = Color(red:0.20,green:0.80,blue:0.95)
|
||
static let b = Color(red:1.0,green:0.66,blue:0.22)
|
||
static func color(_ deck: String) -> Color { deck == "A" ? a : b }
|
||
static func stamp(_ value: Double) -> String {
|
||
guard value.isFinite else { return "0:00" };let seconds = Int(max(0,value));return String(format:"%d:%02d",seconds/60,seconds%60)
|
||
}
|
||
}
|
||
|
||
struct DJConsole: View {
|
||
@ObservedObject var model: AppModel
|
||
@ObservedObject var system: DJSystem
|
||
@State private var settingsModal = false
|
||
@State private var routing = false
|
||
@State private var mapping = false
|
||
@State private var query = ""
|
||
@State private var playlist: Int64?
|
||
@State private var playlistIDs = [Int64]()
|
||
@State private var selected: Int64?
|
||
@State private var playlistEditor = false
|
||
@State private var playlistName = ""
|
||
@State private var renaming = false
|
||
@State private var page = 0
|
||
private var songs: [Song] {
|
||
let all = system.songs.filter{!$0.audio.hasPrefix("showscreen:") && SongSearch.matches($0,query:query)}
|
||
if playlist != nil { let lookup = Dictionary(uniqueKeysWithValues:all.map{($0.id,$0)});return playlistIDs.compactMap{lookup[$0]} }
|
||
return all
|
||
}
|
||
private var selectedSong: Song? { system.songs.first{$0.id == selected} }
|
||
private var pages: Int { max(1,(songs.count+49)/50) }
|
||
private var visible: [Song] { Array(songs.dropFirst(min(page,pages-1)*50).prefix(50)) }
|
||
var body: some View {
|
||
ScrollView {
|
||
VStack(spacing:10) {
|
||
header
|
||
DJContinuousConsole(system:system,loadA:{loadSelected("A")},loadB:{loadSelected("B")})
|
||
browser.frame(height:130)
|
||
if let progress = system.importProgress {
|
||
HStack {
|
||
Text(progress.current).lineLimit(1);Text("\(progress.completed)/\(progress.total)").monospacedDigit()
|
||
Spacer()
|
||
if system.importing { ProgressView().controlSize(.mini);Button("Cancel") { system.cancelImport() } }
|
||
else { Button("Dismiss") { system.importProgress = nil } }
|
||
}.font(.caption).controlSize(.mini)
|
||
}
|
||
HStack { Text(system.status).lineLimit(1);Spacer();Text("DJ master separate from karaoke").foregroundStyle(.secondary) }.font(.system(size:10))
|
||
}.padding(14)
|
||
}.background(DJStyle.background).foregroundStyle(.white)
|
||
.preferredColorScheme(.dark)
|
||
.alert("Replace playing track?",isPresented:Binding(get:{system.pendingReplacement != nil},set:{if !$0 { system.pendingReplacement = nil }}),presenting:system.pendingReplacement) { request in
|
||
Button("Cancel",role:.cancel) { system.pendingReplacement = nil }
|
||
Button("Replace & Load",role:.destructive) { system.confirmReplacement() }
|
||
} message: { request in Text("Deck \(request.deck) is playing. Replacing it with \(request.title) stops the current track. Continue?") }
|
||
.sheet(isPresented:$system.cueEditing) { DJCueEditor(system:system) }
|
||
.sheet(isPresented:$settingsModal) { StudioSettingsDialog(model:model,scope:"DJ") }
|
||
.sheet(isPresented:$routing) { StudioSettingsDialog(model:model,scope:"DJ",category:"Devices") }
|
||
.sheet(isPresented:$mapping) { StudioSettingsDialog(model:model,scope:"DJ",category:"MIDI") }
|
||
.sheet(isPresented:$playlistEditor) { playlistSheet }
|
||
.alert("DJ workstation",isPresented:Binding(get:{system.error != nil},set:{if !$0 { system.error = nil }})) { Button("OK") { system.error = nil } } message: { Text(system.error ?? "") }
|
||
.onAppear { refreshPlaylist();connectMIDI() }
|
||
.onChange(of:selected) { _ in connectMIDI() }
|
||
.onChange(of:playlist) { _ in refreshPlaylist();page = 0;selected = nil }
|
||
.onChange(of:system.songs) { _ in refreshPlaylist();connectMIDI() }
|
||
.onChange(of:system.playlists) { _ in if let playlist,!system.playlists.contains(where:{$0.id == playlist}) { self.playlist = nil };refreshPlaylist() }
|
||
.onChange(of:query) { _ in page = 0 }
|
||
}
|
||
private var header: some View {
|
||
HStack {
|
||
Image(systemName:"waveform.path").foregroundStyle(DJStyle.a)
|
||
Text("DJ WORKSTATION").font(.system(size:12,weight:.bold,design:.rounded))
|
||
Text("TWO DECKS").font(.system(size:9,weight:.medium)).foregroundStyle(.secondary)
|
||
Spacer()
|
||
if system.previewDeck != nil { Button("Stop headphone preview") { system.stopPreview() }.tint(.green) }
|
||
Button { settingsModal = true } label: { Label("DJ Settings",systemImage:"gearshape") }
|
||
Button { routing = true } label: { Label("Audio Routing",systemImage:"hifispeaker.fill") }
|
||
Button { mapping = true } label: { Label("MIDI",systemImage:"pianokeys") }
|
||
}.controlSize(.small)
|
||
}
|
||
private var browser: some View {
|
||
VStack(spacing:5) {
|
||
HStack(spacing:8) {
|
||
Picker("DJ library",selection:$playlist) { Text("All music").tag(nil as Int64?);ForEach(system.playlists) { Text($0.name).tag(Optional($0.id)) } }.labelsHidden().frame(width:175)
|
||
Menu {
|
||
Button("New Playlist…") { renaming = false;playlistName = "";playlistEditor = true }
|
||
if let playlist {
|
||
Button("Rename Playlist…") { renaming = true;playlistName = system.playlists.first{$0.id == playlist}?.name ?? "";playlistEditor = true }
|
||
Button("Delete Playlist",role:.destructive) { system.delete("playlists",id:playlist) }
|
||
}
|
||
} label: { Image(systemName:"folder.badge.plus") }.frame(width:25)
|
||
TextField("Search title, artist or album",text:$query).textFieldStyle(.roundedBorder)
|
||
Button("Import Files / Folder…") { importMedia() }
|
||
Spacer(minLength:0)
|
||
Button { page = max(0,page-1) } label: { Image(systemName:"chevron.left") }.disabled(page == 0)
|
||
Text("\(min(page,pages-1)+1)/\(pages) · \(songs.count)").font(.caption.monospacedDigit()).fixedSize()
|
||
Button { page = min(pages-1,page+1) } label: { Image(systemName:"chevron.right") }.disabled(page >= pages-1)
|
||
}.controlSize(.small)
|
||
List(selection:$selected) {
|
||
ForEach(visible) { song in
|
||
HStack(spacing:8) {
|
||
Image(systemName:"music.note").foregroundStyle(.secondary)
|
||
Text(song.title).font(.system(size:system.settings.libraryFont,weight:.medium)).lineLimit(1).frame(maxWidth:.infinity,alignment:.leading)
|
||
Text(song.artist).font(.system(size:10)).foregroundStyle(.secondary).lineLimit(1).frame(width:130,alignment:.leading)
|
||
Text(DJStyle.stamp(song.duration)).font(.system(size:10).monospacedDigit()).foregroundStyle(.secondary).frame(width:35)
|
||
Button("A") { system.load(song,into:"A") }.tint(DJStyle.a).accessibilityLabel("Load \(song.title) into A")
|
||
Button("B") { system.load(song,into:"B") }.tint(DJStyle.b).accessibilityLabel("Load \(song.title) into B")
|
||
}.padding(.vertical,max(0,(system.settings.libraryRowHeight-24)/2)).tag(song.id).buttonStyle(.bordered).controlSize(.mini)
|
||
.onDrag { system.dragReference(song.id).provider() }
|
||
.contextMenu { playlistMenu(song) }
|
||
}
|
||
if visible.isEmpty { Text("Import music or choose another playlist.").font(.caption).foregroundStyle(.secondary) }
|
||
}.listStyle(.inset).scrollContentBackground(.hidden).background(DJStyle.panel,in:RoundedRectangle(cornerRadius:6))
|
||
}
|
||
}
|
||
@ViewBuilder private func playlistMenu(_ song: Song) -> some View {
|
||
Menu("Add to Playlist") { ForEach(system.playlists) { list in Button(list.name) { system.addToPlaylist(list.id,song:song.id);refreshPlaylist() } } }
|
||
if let playlist {
|
||
Button("Move Earlier") { system.perform { try system.library?.reorderPlaylist(playlist,song:song.id,by:-1) };refreshPlaylist() }
|
||
Button("Move Later") { system.perform { try system.library?.reorderPlaylist(playlist,song:song.id,by:1) };refreshPlaylist() }
|
||
Button("Remove from Playlist") { system.perform { try system.library?.removeFromPlaylist(playlist,song:song.id) };refreshPlaylist() }
|
||
}
|
||
}
|
||
private var playlistSheet: some View {
|
||
VStack(alignment:.leading,spacing:16) {
|
||
Text(renaming ? "Rename Playlist" : "New Playlist").font(.title2)
|
||
TextField("Playlist name",text:$playlistName).textFieldStyle(.roundedBorder)
|
||
HStack { Button("Cancel") { playlistEditor = false };Spacer();Button("Save") {
|
||
let name = playlistName.trimmingCharacters(in:.whitespacesAndNewlines)
|
||
if renaming,let playlist { system.rename("playlists",id:playlist,name:name) } else { system.createPlaylist(name) }
|
||
playlistEditor = false
|
||
}.disabled(playlistName.trimmingCharacters(in:.whitespacesAndNewlines).isEmpty).keyboardShortcut(.defaultAction) }
|
||
}.padding(24).frame(width:360)
|
||
}
|
||
private func loadSelected(_ deck: String) { if let selectedSong { system.load(selectedSong,into:deck) } else { system.status = "Select a DJ library track, then Load \(deck), or drag a DJ library track onto the deck." } }
|
||
private func refreshPlaylist() { playlistIDs = playlist.flatMap{try? system.library?.playlistSongIDs($0)} ?? [] }
|
||
private func connectMIDI() {
|
||
let selected = selectedSong
|
||
system.midi.onAction = { [weak system] name,value,relative in system?.action(name,value:value,relative:relative,selected:selected) }
|
||
}
|
||
private func importMedia() {
|
||
let panel = NSOpenPanel();panel.title = "Import DJ Music · Files or Folders";panel.canChooseFiles = true;panel.canChooseDirectories = true;panel.allowsMultipleSelection = true
|
||
if panel.runModal() == .OK { system.importFiles(panel.urls) }
|
||
}
|
||
}
|
||
|
||
private struct DJDeckSurfaces {
|
||
@ObservedObject var deck: DJChannel
|
||
@ObservedObject var player: Player
|
||
@ObservedObject var system: DJSystem
|
||
private var color: Color { DJStyle.color(deck.letter) }
|
||
var tempoStrip: some View {
|
||
VStack(spacing:5) {
|
||
Button("SYNC") { system.sync(deck) }.font(.system(size:11,weight:.bold)) .buttonStyle(DJConsoleButtonStyle(color,active:system.syncActive)).accessibilityValue(system.syncActive ? "On" : "Off").help("Toggle both decks to deck A’s BPM; click again to restore their original tempos").accessibilityIdentifier("dj.\(deck.letter).sync")
|
||
Text(deck.bpmConfirmed ? String(format:"%.1f",deck.bpm*player.tempo) : "—").font(.system(size:11,weight:.semibold).monospacedDigit())
|
||
Button(String(format:"%+.1f%%",(player.tempo-1)*100)) { player.tempo = 1 }.font(.system(size:9).monospacedDigit()).buttonStyle(.plain).foregroundStyle(.secondary).help("Reset tempo")
|
||
DJHardwareFader(value:Binding(get:{system.settings.position(for:player.tempo)},set:{player.tempo = system.settings.tempo(at:$0)}),label:"Deck \(deck.letter) tempo",vertical:true).frame(width:52,height:94)
|
||
HStack(spacing:16) { Button("−") { player.tempo = max(1-system.settings.tempoRange/100,player.tempo-0.001) };Button("+") { player.tempo = min(1+system.settings.tempoRange/100,player.tempo+0.001) } }.buttonStyle(.plain).font(.system(size:15,weight:.medium))
|
||
}.frame(width:62).disabled(!player.canJog)
|
||
}
|
||
var tonePanel: some View {
|
||
HStack(alignment:.top,spacing:10) {
|
||
VStack(spacing:8) {
|
||
DJKnob(label:"HIGH",value:$player.highGain,range:-12...12,reset:0,color:color)
|
||
DJKnob(label:"MID",value:$player.midGain,range:-12...12,reset:0,color:color)
|
||
DJKnob(label:"LOW",value:$player.lowGain,range:-12...12,reset:0,color:color)
|
||
}
|
||
VStack(spacing:12) {
|
||
DJKnob(label:"FILTER",value:$player.filter,range:-1...1,reset:0,color:color,format:{String(format:"%+.0f%%",$0*100)})
|
||
VStack(spacing:5) {
|
||
ForEach(0..<8) { i in RoundedRectangle(cornerRadius:1).fill(Double(max(player.leftLevel,player.rightLevel))*8 > Double(7-i) ? color : Color.white.opacity(0.07)).frame(width:8,height:5) }
|
||
}.accessibilityLabel("Deck output meter")
|
||
}
|
||
}.frame(width:88)
|
||
}
|
||
}
|
||
|
||
private struct DJKnob: View {
|
||
let label: String
|
||
@Binding var value: Double
|
||
let range: ClosedRange<Double>
|
||
let reset: Double
|
||
let color: Color
|
||
var format: (Double) -> String = {String(format:"%+.0f dB",$0)}
|
||
@State private var initial: Double?
|
||
private var fraction: Double { min(1,max(0,(value-range.lowerBound)/(range.upperBound-range.lowerBound))) }
|
||
var body: some View {
|
||
VStack(spacing:1) {
|
||
ZStack {
|
||
Circle().fill(Color.black.opacity(0.35)).overlay { Circle().stroke(.white.opacity(0.12),lineWidth:2) }
|
||
Circle().trim(from:0.12,to:0.88).stroke(color.opacity(0.35),style:StrokeStyle(lineWidth:2,lineCap:.round)).rotationEffect(.degrees(90))
|
||
Capsule().fill(color).frame(width:2,height:9).offset(y:-7).rotationEffect(.degrees(-135+fraction*270))
|
||
}.frame(width:29,height:29).contentShape(Circle())
|
||
.highPriorityGesture(TapGesture(count:2).onEnded { value = reset;initial = nil })
|
||
.simultaneousGesture(DragGesture(minimumDistance:3).onChanged { drag in if initial == nil { initial = value };value = min(range.upperBound,max(range.lowerBound,(initial ?? value)-Double(drag.translation.height)*(range.upperBound-range.lowerBound)/120)) }.onEnded{_ in initial = nil})
|
||
Text(label).font(.system(size:8,weight:.medium)).foregroundStyle(.secondary)
|
||
}.frame(minWidth:36).help("\(label): \(format(value)). Drag vertically; double-click to reset.")
|
||
.accessibilityElement(children:.ignore).accessibilityLabel(label).accessibilityValue(format(value))
|
||
.accessibilityAdjustableAction { direction in let step = (range.upperBound-range.lowerBound)/100;value = min(range.upperBound,max(range.lowerBound,value+(direction == .increment ? step : -step))) }
|
||
}
|
||
}
|
||
private struct DJPlatter: View {
|
||
@ObservedObject var player: Player
|
||
let letter: String
|
||
let color: Color
|
||
var markerEnabled = true
|
||
@State private var lastAngle: Double?
|
||
var body: some View {
|
||
GeometryReader { geometry in
|
||
ZStack {
|
||
Circle().fill(Color.black.opacity(0.55)).overlay { Circle().stroke(color.opacity(0.4),lineWidth:3) }
|
||
ForEach([0.70,0.80,0.90],id:\.self) { scale in Circle().stroke(.white.opacity(0.06),lineWidth:1).scaleEffect(scale) }
|
||
ZStack {
|
||
Circle().fill(color.opacity(0.15)).frame(width:53,height:53)
|
||
Text(letter).font(.system(size:25,weight:.bold,design:.rounded)).foregroundStyle(color)
|
||
if markerEnabled {
|
||
Rectangle().fill(color).frame(width:5,height:26).offset(y:-geometry.size.height*0.37)
|
||
Circle().fill(.white).frame(width:5,height:5).offset(y:-geometry.size.height*0.45)
|
||
}
|
||
}.rotationEffect(.degrees(player.time*200))
|
||
}.contentShape(Circle())
|
||
.gesture(DragGesture(minimumDistance:2).onChanged { drag in
|
||
let angle = atan2(Double(drag.location.y-geometry.size.height/2),Double(drag.location.x-geometry.size.width/2))
|
||
if let previous = lastAngle { var delta = angle-previous;if delta > .pi { delta -= 2 * .pi };if delta < -.pi { delta += 2 * .pi };player.jog(delta / (2 * .pi) * 2) }
|
||
lastAngle = angle
|
||
}.onEnded{_ in lastAngle = nil})
|
||
}.accessibilityLabel("Deck \(letter) jog platter").accessibilityValue(player.playing ? "Rotating" : "Paused").help("Drag around the platter to jog (2 seconds per turn). Rotation follows source playback time.")
|
||
}
|
||
}
|
||
private struct DJWaveform: View {
|
||
@ObservedObject var player: Player
|
||
let color: Color
|
||
var body: some View {
|
||
GeometryReader { geometry in
|
||
Canvas { context,size in
|
||
let values = player.waveform
|
||
guard !values.isEmpty else { return }
|
||
let count = max(1,Int(size.width/2))
|
||
for i in 0..<count {
|
||
let index = min(values.count-1,i*values.count/count),height = max(1,Double(values[index])*size.height)
|
||
context.fill(Path(CGRect(x:Double(i)*size.width/Double(count),y:(size.height-height)/2,width:1.4,height:height)),with:.color(color.opacity(Double(i)/Double(count) < player.time/max(0.001,player.duration) ? 0.4 : 0.9)))
|
||
}
|
||
if player.loopEnabled,let start = player.loopIn,let end = player.loopOut,player.duration > 0 {
|
||
context.fill(Path(CGRect(x:start/player.duration*size.width,y:0,width:(end-start)/player.duration*size.width,height:size.height)),with:.color(.green.opacity(0.18)))
|
||
}
|
||
let x = player.time/max(0.001,player.duration)*size.width
|
||
context.fill(Path(CGRect(x:x,y:0,width:1.5,height:size.height)),with:.color(.white))
|
||
}.background(.black.opacity(0.3),in:RoundedRectangle(cornerRadius:3))
|
||
.overlay { if player.waveformLoading { ProgressView().controlSize(.mini) } else if player.waveformUnavailable { Text("Waveform unavailable").font(.caption2).foregroundStyle(.secondary) } }
|
||
.contentShape(Rectangle()).gesture(DragGesture(minimumDistance:0).onChanged { value in player.seek(Double(value.location.x/max(1,geometry.size.width))*player.duration) })
|
||
}.accessibilityLabel("Track waveform and position").accessibilityValue(DJStyle.stamp(player.time)).accessibilityAdjustableAction { player.jog($0 == .increment ? 1 : -1) }
|
||
}
|
||
}
|
||
private struct DJMappingSheet: View {
|
||
@ObservedObject var midi: DJMIDI
|
||
var embedded = false
|
||
@State private var action = "A Play"
|
||
@Environment(\.dismiss) private var dismiss
|
||
private let commands = ["Play","Stop","Cue","Set cue","Sync","Loop","Headphones","Load","Gain","High","Mid","Low","Filter","Level","Tempo","Jog","Hot cue 1","Hot cue 2","Hot cue 3","Hot cue 4"]
|
||
private var actions: [String] { ["Crossfader","Master"]+["A","B"].flatMap{deck in commands.map{deck+" "+$0}} }
|
||
var body: some View {
|
||
VStack(alignment:.leading,spacing:14) {
|
||
HStack { Text("MIDI Controller Mapping").font(.title2.bold());Spacer();Button("Refresh") { midi.refreshSources() } }
|
||
Picker("MIDI input",selection:Binding(get:{midi.sourceID},set:{midi.select($0)})) { Text("Not connected").tag(Int32(0));ForEach(midi.sources) { Text($0.name).tag($0.id) } }
|
||
Text("Numark DJ2GO / DJ2GO2 / DJ2GO2 Touch use USB MIDI. “Mix Go” is not a confirmed model name. Select the connected source and learn its controls; no factory note numbers are assumed.").font(.caption).foregroundStyle(.secondary)
|
||
HStack {
|
||
Picker("Action",selection:$action) { ForEach(actions,id:\.self) { Text($0).tag($0) } }
|
||
Picker("Mode",selection:$midi.learnMode) { Text("Absolute").tag("Absolute");Text("Relative signed").tag("Relative signed");Text("Relative offset").tag("Relative offset") }.frame(width:160)
|
||
}
|
||
HStack {
|
||
Button(midi.learning == nil ? "Learn Next Control" : "Cancel Learning") { if midi.learning == nil { midi.learning = action } else { midi.learning = nil } }.disabled(midi.sourceID == 0)
|
||
if let learning = midi.learning { Text("Move or press the control for \(learning)…").foregroundStyle(.orange) }
|
||
}
|
||
Text(midi.status).font(.caption)
|
||
List {
|
||
ForEach(midi.mappings.filter{$0.source == midi.sourceID}) { map in
|
||
HStack {
|
||
Text(map.action).frame(width:110,alignment:.leading)
|
||
Text("\(map.status & 0xF0 == 0xB0 ? "CC" : "Note") \(map.number) · ch \((map.status & 0x0F)+1)").foregroundStyle(.secondary)
|
||
Spacer();Text(map.mode).font(.caption).foregroundStyle(.secondary)
|
||
Button { midi.remove(map.id) } label: { Image(systemName:"trash") }.buttonStyle(.borderless).accessibilityLabel("Remove mapping for \(map.action)")
|
||
}
|
||
}
|
||
}.frame(height:200)
|
||
Text("Mappings save per MIDI source ID. Use relative mode only for Jog encoders. Supported: note buttons and 7-bit CCs. Load uses the selected DJ library row. Button releases are ignored. Controller LEDs, motor feedback, 14-bit controls, scratching and vendor-specific handshakes are not implemented.").font(.caption).foregroundStyle(.secondary)
|
||
if !embedded { HStack { Spacer();Button("Done") { midi.learning = nil;dismiss() }.keyboardShortcut(.defaultAction) } }
|
||
}.padding(24).frame(width:660)
|
||
}
|
||
}
|
||
|
||
/// Native mouse/keyboard/accessibility behaviour with a rectangular mixer-fader cap.
|
||
struct DJHardwareFader: NSViewRepresentable {
|
||
@Binding var value: Double
|
||
let label: String
|
||
var vertical = false
|
||
func makeCoordinator() -> Coordinator { Coordinator(value:$value) }
|
||
func makeNSView(context: Context) -> NSSlider {
|
||
let slider = NSSlider(value:value,minValue:0,maxValue:1,target:context.coordinator,action:#selector(Coordinator.changed(_:)))
|
||
slider.cell = DJHardwareFaderCell()
|
||
slider.target = context.coordinator;slider.action = #selector(Coordinator.changed(_:))
|
||
slider.frame = NSRect(x:0,y:0,width:vertical ? 52 : 240,height:vertical ? 94 : 36)
|
||
slider.isEnabled = context.environment.isEnabled;slider.isVertical = vertical
|
||
slider.minValue = 0;slider.maxValue = 1;slider.doubleValue = value
|
||
slider.isContinuous = true;slider.numberOfTickMarks = 9;slider.allowsTickMarkValuesOnly = false
|
||
slider.setAccessibilityLabel(label)
|
||
slider.setContentHuggingPriority(.defaultLow,for:.horizontal)
|
||
return slider
|
||
}
|
||
func updateNSView(_ slider: NSSlider,context: Context) { context.coordinator.value = $value;slider.isEnabled = context.environment.isEnabled;slider.isVertical = vertical;slider.doubleValue = min(1,max(0,value));slider.setAccessibilityLabel(label) }
|
||
func sizeThatFits(_ proposal: ProposedViewSize,nsView: NSSlider,context: Context) -> CGSize? { CGSize(width:proposal.width ?? (vertical ? 52 : 240),height:proposal.height ?? (vertical ? 94 : 36)) }
|
||
final class Coordinator: NSObject {
|
||
var value: Binding<Double>
|
||
init(value: Binding<Double>) { self.value = value }
|
||
@objc func changed(_ sender: NSSlider) { value.wrappedValue = sender.doubleValue }
|
||
}
|
||
}
|
||
private final class DJHardwareFaderCell: NSSliderCell {
|
||
override func drawBar(inside rect: NSRect,flipped: Bool) {
|
||
let vertical = (controlView?.bounds.height ?? 0) > (controlView?.bounds.width ?? 0)
|
||
NSColor(calibratedWhite:0.36,alpha:1).setStroke()
|
||
for i in 0...8 {
|
||
let mark = NSBezierPath()
|
||
if vertical { let y = rect.minY+rect.height*Double(i)/8;mark.move(to:NSPoint(x:rect.midX-21,y:y));mark.line(to:NSPoint(x:rect.midX+21,y:y)) }
|
||
else { let x = rect.minX+rect.width*Double(i)/8;mark.move(to:NSPoint(x:x,y:rect.midY-13));mark.line(to:NSPoint(x:x,y:rect.midY+13)) }
|
||
mark.lineWidth = 1;mark.stroke()
|
||
}
|
||
let groove = vertical ? NSRect(x:rect.midX-2,y:rect.minY,width:4,height:rect.height) : NSRect(x:rect.minX,y:rect.midY-2,width:rect.width,height:4)
|
||
NSColor(calibratedWhite:0.025,alpha:1).setFill();NSBezierPath(roundedRect:groove,xRadius:2,yRadius:2).fill()
|
||
}
|
||
override func drawTickMarks() {}
|
||
override func drawKnob(_ rect: NSRect) {
|
||
let vertical = (controlView?.bounds.height ?? 0) > (controlView?.bounds.width ?? 0)
|
||
let cap = vertical ? NSRect(x:rect.midX-21,y:rect.midY-6,width:42,height:12) : NSRect(x:rect.midX-6,y:rect.midY-14,width:12,height:28)
|
||
let path = NSBezierPath(roundedRect:cap,xRadius:4,yRadius:4)
|
||
NSGradient(starting:NSColor(calibratedWhite:0.60,alpha:1),ending:NSColor(calibratedWhite:0.30,alpha:1))?.draw(in:path,angle:90)
|
||
NSColor(calibratedWhite:0.75,alpha:0.6).setStroke()
|
||
let marker = NSBezierPath();if vertical { marker.move(to:NSPoint(x:cap.minX+6,y:cap.midY));marker.line(to:NSPoint(x:cap.maxX-6,y:cap.midY)) } else { marker.move(to:NSPoint(x:cap.midX,y:cap.minY+5));marker.line(to:NSPoint(x:cap.midX,y:cap.maxY-5)) };marker.lineWidth = 1;marker.stroke()
|
||
}
|
||
}
|
||
|
||
struct DJContinuousConsole: View {
|
||
@ObservedObject var system: DJSystem
|
||
let loadA: () -> Void
|
||
let loadB: () -> Void
|
||
var body: some View {
|
||
VStack(spacing:0) {
|
||
HStack(spacing:0) {
|
||
DJTrackHeader(deck:system.a,player:system.a.player,system:system,load:loadA)
|
||
Divider()
|
||
DJTrackHeader(deck:system.b,player:system.b.player,system:system,load:loadB)
|
||
}.frame(height:92).background(Color.black.opacity(0.4))
|
||
Divider()
|
||
HStack(spacing:0) {
|
||
DJConsoleWing(deck:system.a,player:system.a.player,system:system)
|
||
Divider()
|
||
VStack(spacing:1) {
|
||
DJCentreWaveform(player:system.a.player,letter:"A",color:DJStyle.a,settings:system.settings)
|
||
DJCentreWaveform(player:system.b.player,letter:"B",color:DJStyle.b,settings:system.settings)
|
||
}.frame(maxWidth:.infinity).background(.black)
|
||
Divider()
|
||
DJConsoleWing(deck:system.b,player:system.b.player,system:system)
|
||
}.frame(height:198).background(Color(white:0.12))
|
||
Divider()
|
||
HStack(spacing:12) {
|
||
DJConsoleTransport(deck:system.a,player:system.a.player,system:system)
|
||
VStack(spacing:0) {
|
||
DJHardwareFader(value:$system.crossfader,label:"DJ crossfader").frame(height:36)
|
||
HStack { Text("A").foregroundStyle(DJStyle.a);Spacer();Button("Centre") { system.crossfader = 0.5 }.buttonStyle(.plain);Spacer();Text("B").foregroundStyle(DJStyle.b) }.font(.system(size:9))
|
||
}.frame(width:195)
|
||
DJConsoleTransport(deck:system.b,player:system.b.player,system:system)
|
||
}.padding(.horizontal,12).padding(.vertical,10).background(Color(white:0.14))
|
||
}.overlay(Rectangle().stroke(.white.opacity(0.09)))
|
||
}
|
||
}
|
||
private struct DJTrackHeader: View {
|
||
@ObservedObject var deck: DJChannel
|
||
@ObservedObject var player: Player
|
||
@ObservedObject var system: DJSystem
|
||
let load: () -> Void
|
||
private var color: Color { DJStyle.color(deck.letter) }
|
||
var body: some View {
|
||
HStack(spacing:10) {
|
||
if deck.letter == "A" { artwork }
|
||
VStack(alignment:.leading,spacing:5) {
|
||
HStack {
|
||
VStack(alignment:.leading,spacing:2) {
|
||
Text(deck.song?.title ?? "Load deck \(deck.letter)").font(.system(size:15,weight:.medium)).lineLimit(1)
|
||
HStack(spacing:6) {
|
||
Text(deck.song?.artist.isEmpty == false ? deck.song!.artist : "Local DJ library").foregroundStyle(.secondary).lineLimit(1)
|
||
TextField("BPM",value:Binding(get:{deck.bpm},set:{deck.bpm = min(240,max(40,$0));deck.bpmConfirmed = true;deck.bpmEstimated = false}),format:.number.precision(.fractionLength(1))).frame(width:44).textFieldStyle(.roundedBorder).controlSize(.mini).accessibilityLabel("Deck \(deck.letter) source BPM")
|
||
Text(deck.analysingBPM ? "…" : deck.bpmEstimated ? "BPM~" : deck.bpmConfirmed ? "BPM" : "BPM?").foregroundStyle(.secondary)
|
||
Button("Tap") { deck.tap() }.controlSize(.mini)
|
||
}.font(.system(size:10)).disabled(!player.canJog)
|
||
}
|
||
Spacer(minLength:4)
|
||
Text("−"+DJStyle.stamp(player.duration-player.time)).font(.system(size:17).monospacedDigit())
|
||
Button("Load",action:load).controlSize(.mini)
|
||
}
|
||
DJWaveform(player:player,color:color).frame(height:22)
|
||
}
|
||
if deck.letter == "B" { artwork }
|
||
}.padding(10).frame(maxWidth:.infinity)
|
||
.onDrop(of:[UTType.fileURL.identifier,"public.text"],isTargeted:nil) { system.acceptDrop($0,into:deck.letter) }
|
||
}
|
||
private var artwork: some View {
|
||
ZStack {
|
||
RoundedRectangle(cornerRadius:4).fill(color.opacity(0.12))
|
||
if let image = deck.artwork { Image(nsImage:image).resizable().scaledToFill() }
|
||
else { Image(systemName:"music.note").font(.system(size:26)).foregroundStyle(color) }
|
||
}.frame(width:62,height:62).clipped().clipShape(RoundedRectangle(cornerRadius:4))
|
||
}
|
||
}
|
||
private struct DJConsoleWing: View {
|
||
@ObservedObject var deck: DJChannel
|
||
@ObservedObject var player: Player
|
||
@ObservedObject var system: DJSystem
|
||
var body: some View {
|
||
let face = DJDeckSurfaces(deck:deck,player:player,system:system)
|
||
HStack(spacing:10) {
|
||
if deck.letter == "B" { face.tonePanel }
|
||
if deck.letter == "A" { face.tempoStrip }
|
||
ZStack {
|
||
DJPlatter(player:player,letter:deck.letter,color:DJStyle.color(deck.letter),markerEnabled:system.settings.platterMarker).frame(width:134,height:134)
|
||
VStack(spacing:3) {
|
||
Text(String(format:"%+.1f%%",(player.tempo-1)*100)).font(.system(size:9)).foregroundStyle(.secondary)
|
||
Text(deck.bpmConfirmed ? String(format:"%.1f",deck.bpm*player.tempo) : deck.letter).font(.system(size:21,weight:.semibold).monospacedDigit()).foregroundStyle(DJStyle.color(deck.letter))
|
||
Divider().frame(width:62)
|
||
Text(DJStyle.stamp(player.time)).font(.system(size:10).monospacedDigit()).foregroundStyle(.secondary)
|
||
Text("−"+DJStyle.stamp(player.duration-player.time)).font(.system(size:11).monospacedDigit())
|
||
}.frame(width:95,height:95).background(Color(white:0.095),in:Circle()).allowsHitTesting(false)
|
||
}
|
||
if deck.letter == "A" { face.tonePanel }
|
||
if deck.letter == "B" { face.tempoStrip }
|
||
}.padding(.horizontal,9).frame(width:322).opacity(system.settings.dimInactiveDeck && !player.playing ? 0.55 : 1)
|
||
.onDrop(of:[UTType.fileURL.identifier,"public.text"],isTargeted:nil) { system.acceptDrop($0,into:deck.letter) }
|
||
}
|
||
}
|
||
private struct DJConsoleTransport: View {
|
||
@ObservedObject var deck: DJChannel
|
||
@ObservedObject var player: Player
|
||
@ObservedObject var system: DJSystem
|
||
private var playButton: some View {
|
||
Button { player.toggle() } label: { Image(systemName:player.playing ? "pause.fill" : "play.fill").font(.system(size:17)).frame(width:36,height:22) }.foregroundStyle(player.playing ? Color.green : Color.white).accessibilityLabel("Deck \(deck.letter) play pause").accessibilityIdentifier("dj.\(deck.letter).play")
|
||
}
|
||
private var cueButton: some View { Button("CUE") { player.returnToCue() }.font(.system(size:11,weight:.semibold)).frame(height:22).contextMenu { Button("Set cue here") { player.setCue() } } }
|
||
private var loopButtons: some View {
|
||
HStack(spacing:0) {
|
||
Button("‹") { deck.loopBeats = max(1,deck.loopBeats/2) }
|
||
Button("\(deck.loopBeats)") { system.toggleLoop(deck) }.foregroundStyle(player.loopEnabled ? Color.green : Color.white).help("Toggle beat loop; requires confirmed BPM")
|
||
Button("›") { deck.loopBeats = min(32,deck.loopBeats*2) }
|
||
}
|
||
}
|
||
private var headphones: some View { Button { system.startPreview(deck) } label: { Image(systemName:"headphones") }.foregroundStyle(system.previewDeck == deck.letter ? Color.green : Color.white) }
|
||
var body: some View {
|
||
VStack(spacing:6) {
|
||
HStack(spacing:8) {
|
||
if deck.letter == "A" { playButton;cueButton;loopButtons;headphones;Spacer(minLength:0) }
|
||
else { Spacer(minLength:0);headphones;loopButtons;cueButton;playButton }
|
||
}.controlSize(.regular)
|
||
HStack(spacing:6) {
|
||
if deck.letter == "B" { Spacer(minLength:0) }
|
||
ForEach(0..<4) { index in Button("\(index+1)") { system.hotCue(index,deck:deck) }.foregroundStyle(player.hotCues[index] == nil ? Color.secondary : DJStyle.color(deck.letter)).contextMenu { Button("Clear hot cue") { player.hotCue(index,clear:true) } } }
|
||
Button("Cue \(DJStyle.stamp(player.cuePosition)) ✎") { system.editCue(deck) };Button("IN") { player.markLoopIn() };Button("OUT") { player.markLoopOut() }
|
||
Menu { Button("Stop") { player.stopDeck() };Button("Exit loop") { player.clearLoop() };Button("Nudge back") { player.jog(-0.05) };Button("Nudge forward") { player.jog(0.05) } } label: { Image(systemName:"ellipsis") }
|
||
if deck.letter == "A" { Spacer(minLength:0) }
|
||
}.controlSize(.mini)
|
||
}.buttonStyle(DJConsoleButtonStyle()).frame(maxWidth:.infinity).disabled(!player.canJog)
|
||
}
|
||
}
|
||
private struct DJCentreWaveform: View {
|
||
@ObservedObject var player: Player
|
||
let letter: String
|
||
let color: Color
|
||
var settings = DJPreferences()
|
||
@State private var scrubStart: Double?
|
||
var body: some View {
|
||
GeometryReader { geometry in
|
||
Canvas { context,size in
|
||
guard !player.waveform.isEmpty,player.duration > 0 else { return }
|
||
let span = settings.waveformSeconds,start = player.time-span/2,count = max(1,Int(size.width/2))
|
||
for second in 0...8 {
|
||
let x = Double(second)/8*size.width
|
||
context.fill(Path(CGRect(x:x,y:0,width:0.5,height:size.height)),with:.color(.white.opacity(settings.showTimeGrid ? 0.15 : 0)))
|
||
}
|
||
for i in 0..<count {
|
||
let seconds = start+Double(i)/Double(count)*span
|
||
guard seconds >= 0,seconds < player.duration else { continue }
|
||
let index = min(player.waveform.count-1,Int(seconds/player.duration*Double(player.waveform.count)))
|
||
let height = max(1,Double(player.waveform[index])*size.height*0.85)
|
||
var shade = color
|
||
if settings.spectralWaveforms,player.waveformBands.indices.contains(index) {
|
||
let band = player.waveformBands[index],sum = max(0.0001,band.low+band.mid+band.high)
|
||
shade = Color(hue:Double(band.mid/sum)*0.38+Double(band.high/sum)*0.72,saturation:0.85,brightness:0.95)
|
||
}
|
||
context.fill(Path(CGRect(x:Double(i)*size.width/Double(count),y:(size.height-height)/2,width:1.5,height:height)),with:.color(shade))
|
||
}
|
||
context.fill(Path(CGRect(x:size.width/2,y:0,width:1.5,height:size.height)),with:.color(.red))
|
||
}.overlay(alignment:.topLeading) { Text(letter+" · \(Int(settings.waveformSeconds)) s").font(.system(size:9,weight:.semibold)).foregroundStyle(color).padding(5) }
|
||
.contentShape(Rectangle()).gesture(DragGesture(minimumDistance:0).onChanged { value in if scrubStart == nil { scrubStart = player.time-settings.waveformSeconds/2 };player.seek((scrubStart ?? 0)+Double(value.location.x/max(1,geometry.size.width))*settings.waveformSeconds) }.onEnded { _ in scrubStart = nil })
|
||
}.accessibilityLabel("Deck \(letter) scrolling waveform").accessibilityValue(DJStyle.stamp(player.time))
|
||
}
|
||
}
|
||
|
||
struct DJPreferencesPane: View {
|
||
@ObservedObject var system: DJSystem
|
||
let category: String
|
||
var body: some View {
|
||
ScrollView {
|
||
VStack(alignment:.leading,spacing:26) {
|
||
switch category {
|
||
case "General": general
|
||
case "Devices": devices
|
||
case "Sound": sound
|
||
case "Library": library
|
||
case "Appearance": appearance
|
||
case "MIDI": midi
|
||
default: advanced
|
||
}
|
||
}.padding(26).frame(maxWidth:.infinity,alignment:.leading)
|
||
}.alert("DJ settings",isPresented:Binding(get:{system.error != nil},set:{if !$0 { system.error = nil }})) { Button("OK") { system.error = nil } } message: { Text(system.error ?? "") }
|
||
}
|
||
private var general: some View {
|
||
VStack(alignment:.leading,spacing:26) {
|
||
PreferencesSection("Song Loading") {
|
||
VStack(alignment:.leading,spacing:14) {
|
||
Toggle("Start playback when loading a track",isOn:$system.settings.autoPlayOnLoad)
|
||
Toggle("Reset EQ and filter on song load",isOn:$system.settings.resetEQOnLoad)
|
||
Toggle("Protect active deck",isOn:$system.settings.protectPlayingDeck)
|
||
Text("Protect active deck requires pausing a playing deck before replacing its track.").font(.caption).foregroundStyle(.secondary)
|
||
}.padding(12)
|
||
}
|
||
PreferencesSection("Sync Mode") {
|
||
VStack(alignment:.leading,spacing:10) { LabeledContent("Sync type",value:"Tempo matching");Text("Uses entered or tapped BPM. Automatic beat analysis, beat-grid alignment and persistent sync lock are not implemented.").font(.caption).foregroundStyle(.secondary) }.padding(12)
|
||
}
|
||
PreferencesSection("Tempo") {
|
||
HStack(spacing:24) { Picker("Slider range",selection:$system.settings.tempoRange) { Text("±8%").tag(8.0);Text("±16%").tag(16.0);Text("±50%").tag(50.0) }.frame(width:250);Toggle("Invert slider",isOn:$system.settings.invertTempo) }.padding(12)
|
||
}
|
||
}
|
||
}
|
||
private var devices: some View {
|
||
PreferencesSection("DJ Audio Devices") {
|
||
VStack(alignment:.leading,spacing:18) {
|
||
Picker("Main output",selection:Binding(get:{system.masterUID},set:{system.routeMaster($0)})) { Text("System default").tag("");ForEach(system.devices) { Text($0.name).tag($0.uid) } }
|
||
Picker("Headphone preview",selection:Binding(get:{system.cueUID},set:{system.stopPreview();system.cueUID = $0})) { Text("None").tag("");ForEach(system.devices) { Text($0.name).tag($0.uid) } }
|
||
HStack { Text("Preview volume");Slider(value:$system.cueLevel,in:0...1) }
|
||
Button("Refresh devices") { system.refreshDevices() }
|
||
Text("Independent headphone playback requires a different device from main output. Each device uses its default stereo pair. Multichannel master/cue pairs, booth output, microphone input and external mixer routing are not implemented. Routing selections apply for this session.").font(.caption).foregroundStyle(.secondary)
|
||
}.padding(12)
|
||
}.onAppear { system.refreshDevices() }
|
||
}
|
||
private var sound: some View {
|
||
VStack(alignment:.leading,spacing:26) {
|
||
PreferencesSection("Mixer") {
|
||
VStack(alignment:.leading,spacing:16) {
|
||
Picker("Crossfader curve",selection:$system.settings.crossfaderCurve) { Text("Equal power").tag("Equal power");Text("Linear").tag("Linear") }.frame(width:380)
|
||
LabeledContent("EQ type",value:"Three-band shelf / parametric EQ")
|
||
LabeledContent("Filter",value:"Low-pass / high-pass · centre bypass")
|
||
}.padding(12)
|
||
}
|
||
PreferencesSection("Audio Output") {
|
||
VStack(alignment:.leading,spacing:12) {
|
||
Picker("Output headroom",selection:$system.settings.headroomDB) { Text("None").tag(0.0);Text("−3 dB").tag(3.0);Text("−6 dB").tag(6.0);Text("−9 dB").tag(9.0) }.frame(width:350)
|
||
Text("Headroom reduces both DJ decks before the master mix. An audio limiter and automatic gain analysis are not implemented.").font(.caption).foregroundStyle(.secondary)
|
||
}.padding(12)
|
||
}
|
||
}
|
||
}
|
||
private var library: some View {
|
||
VStack(alignment:.leading,spacing:26) {
|
||
PreferencesSection("Independent DJ Collection") {
|
||
VStack(alignment:.leading,spacing:14) {
|
||
LabeledContent("Tracks",value:"\(system.songs.count)");LabeledContent("Playlists",value:"\(system.playlists.count)")
|
||
Text(system.root.path).font(.callout).textSelection(.enabled)
|
||
Button("Show DJ library in Finder") { NSWorkspace.shared.open(system.root) }
|
||
Text("Import from the DJ browser. Files and playlists are stored separately from karaoke. Imports scan subfolders and verify copied audio. Spotify playback, automatic BPM/key analysis and watched-folder imports are not implemented.").font(.caption).foregroundStyle(.secondary)
|
||
}.padding(12)
|
||
}
|
||
PreferencesSection("Library Display") {
|
||
VStack(spacing:14) { HStack { Text("Font size").frame(width:100,alignment:.leading);Slider(value:$system.settings.libraryFont,in:10...16,step:1);Text("\(Int(system.settings.libraryFont)) pt").frame(width:45) };HStack { Text("Row height").frame(width:100,alignment:.leading);Slider(value:$system.settings.libraryRowHeight,in:24...44,step:2);Text("\(Int(system.settings.libraryRowHeight)) pt").frame(width:45) } }.padding(12)
|
||
}
|
||
}
|
||
}
|
||
private var appearance: some View {
|
||
VStack(alignment:.leading,spacing:26) {
|
||
PreferencesSection("Jog Wheels") { Toggle("Attach rotating tape marker",isOn:$system.settings.platterMarker).padding(12) }
|
||
PreferencesSection("Waveforms") {
|
||
VStack(alignment:.leading,spacing:14) {
|
||
Toggle("Use frequency colours in scrolling waveforms",isOn:$system.settings.spectralWaveforms)
|
||
Toggle("Show time grid",isOn:$system.settings.showTimeGrid)
|
||
Toggle("Dim inactive deck",isOn:$system.settings.dimInactiveDeck)
|
||
Picker("Visible window",selection:$system.settings.waveformSeconds) { ForEach([4.0,8,16,32],id:\.self) { Text("\(Int($0)) seconds").tag($0) } }.frame(width:340)
|
||
}.padding(12)
|
||
}
|
||
}
|
||
}
|
||
private var midi: some View {
|
||
VStack(alignment:.leading,spacing:20) {
|
||
PreferencesSection("MIDI Controller") {
|
||
Text("Select a source and learn controls using the MIDI button above the DJ console. Mappings save per controller. Standard note buttons and 7-bit CC controls are supported; jog encoders can use relative modes.").padding(12)
|
||
}
|
||
DJMappingSheet(midi:system.midi,embedded:true)
|
||
}
|
||
}
|
||
private var advanced: some View {
|
||
VStack(alignment:.leading,spacing:26) {
|
||
PreferencesSection("Cue Points & Loops") {
|
||
VStack(alignment:.leading,spacing:14) {
|
||
Toggle("Start playback when triggering a hot cue",isOn:$system.settings.autoPlayHotCue)
|
||
Text("Hot cues and loop points belong to the loaded track session. Manual IN/OUT loops and BPM-based beat loops are supported. Beat-grid quantization and saving cue/loop data per song are not implemented.").font(.caption).foregroundStyle(.secondary)
|
||
}.padding(12)
|
||
}
|
||
PreferencesSection("Playback") { Text("Platter dragging performs seek-based jogging. DVS, touch scratching, recording, Neural Mix and cloud synchronization are not implemented.").font(.callout).foregroundStyle(.secondary).padding(12) }
|
||
}
|
||
}
|
||
}
|
||
|
||
private struct DJConsoleButtonStyle: ButtonStyle {
|
||
let accent: Color?
|
||
let active: Bool
|
||
@Environment(\.controlSize) private var size
|
||
@Environment(\.isEnabled) private var enabled
|
||
init(_ accent: Color? = nil,active: Bool = false) { self.accent = accent;self.active = active }
|
||
func makeBody(configuration: Configuration) -> some View {
|
||
configuration.label.padding(.horizontal,size == .mini ? 6 : 12).padding(.vertical,size == .mini ? 3 : 7)
|
||
.background(active ? (accent ?? .blue).opacity(0.45) : Color(white:configuration.isPressed ? 0.20 : 0.12),in:RoundedRectangle(cornerRadius:5))
|
||
.overlay(RoundedRectangle(cornerRadius:5).stroke(accent ?? .black.opacity(0.8),lineWidth:accent == nil ? 1 : 2))
|
||
.opacity(enabled ? 1 : 0.35)
|
||
}
|
||
}
|
||
|
||
struct DJReplacement: Identifiable {
|
||
let id = UUID()
|
||
let deck: String
|
||
let song: Song?
|
||
let urls: [URL]
|
||
var title: String { song?.title ?? urls.first?.lastPathComponent ?? "track" }
|
||
}
|
||
|
||
@MainActor extension DJSystem {
|
||
func acceptDrop(_ providers: [NSItemProvider],into letter: String) -> Bool {
|
||
if let provider = providers.first(where:{$0.hasItemConformingToTypeIdentifier(UTType.fileURL.identifier)}) {
|
||
Task { @MainActor in
|
||
do {
|
||
let url: URL = try await withCheckedThrowingContinuation { continuation in
|
||
provider.loadItem(forTypeIdentifier:UTType.fileURL.identifier,options:nil) { item,error in
|
||
if let url = item as? URL { continuation.resume(returning:url) }
|
||
else if let data = item as? Data,let url = URL(dataRepresentation:data,relativeTo:nil) { continuation.resume(returning:url) }
|
||
else { continuation.resume(throwing:error ?? LibraryError.message("Could not read the Finder file.")) }
|
||
}
|
||
}
|
||
guard url.isFileURL else { throw LibraryError.message("Drop a local audio file from Finder.") }
|
||
requestFileLoad([url],into:letter)
|
||
} catch { self.error = error.localizedDescription }
|
||
}
|
||
return true
|
||
}
|
||
guard let provider = providers.first(where:{$0.canLoadObject(ofClass:NSString.self)}) else { return false }
|
||
Task { @MainActor in
|
||
do {
|
||
let reference = try await SongDragReference.load(provider)
|
||
guard reference.library == dragSession,let song = songs.first(where:{$0.id == reference.song}) else { throw LibraryError.message("Drag from the DJ library or drop an audio file from Finder.") }
|
||
load(song,into:letter)
|
||
} catch { self.error = error.localizedDescription }
|
||
}
|
||
return true
|
||
}
|
||
func requestFileLoad(_ urls: [URL],into letter: String,override: Bool = false) {
|
||
guard !urls.isEmpty else { return }
|
||
if channel(letter).player.playing,!override { pendingReplacement = .init(deck:letter,song:nil,urls:urls);return }
|
||
guard !importing else { status = "Wait for the current DJ import to finish.";return }
|
||
importFiles(urls,loadInto:letter,overridePlaying:override)
|
||
}
|
||
func confirmReplacement() {
|
||
guard let request = pendingReplacement else { return };pendingReplacement = nil
|
||
if let song = request.song { load(song,into:request.deck,overridePlaying:true) }
|
||
else { requestFileLoad(request.urls,into:request.deck,override:true) }
|
||
}
|
||
}
|
||
|
||
/// Conservative onset-envelope estimate; silence and steady tones return no BPM.
|
||
enum DJBPM {
|
||
static func estimate(_ envelope: [Double],rate: Double = 200) -> Double? {
|
||
guard envelope.count >= Int(rate*4),rate > 0 else { return nil }
|
||
let average = envelope.reduce(0,+)/Double(envelope.count)
|
||
guard average > 0.00001 else { return nil }
|
||
let onset = envelope.indices.map { i in i == 0 ? 0 : max(0,envelope[i]-envelope[i-1]) }
|
||
let energy = onset.reduce(0){$0+$1*$1}
|
||
guard sqrt(energy/Double(onset.count)) > average*0.035 else { return nil }
|
||
var bestScore = 0.0,bestLag = 0
|
||
let lower = Int(rate*60/180),upper = Int(rate*60/70)
|
||
for lag in lower...upper {
|
||
var product = 0.0,first = 0.0,second = 0.0
|
||
for i in lag..<onset.count { product += onset[i]*onset[i-lag];first += onset[i]*onset[i];second += onset[i-lag]*onset[i-lag] }
|
||
let score = product/max(0.00000001,sqrt(first*second))
|
||
if score > bestScore { bestScore = score;bestLag = lag }
|
||
}
|
||
guard bestScore > 0.12,bestLag > 0 else { return nil }
|
||
return (60*rate/Double(bestLag)*10).rounded()/10
|
||
}
|
||
static func analyse(_ url: URL,cancelled: () -> Bool = { false }) throws -> Double? {
|
||
let file = try AVAudioFile(forReading:url),format = file.processingFormat
|
||
guard let buffer = AVAudioPCMBuffer(pcmFormat:format,frameCapacity:16384),format.channelCount > 0 else { return nil }
|
||
let hop = max(1,Int(format.sampleRate/200)),limit = Int64(format.sampleRate*90)
|
||
var envelope = [Double](),sum = 0.0,count = 0
|
||
while file.framePosition < min(file.length,limit) {
|
||
if cancelled() { throw CancellationError() }
|
||
try file.read(into:buffer)
|
||
guard buffer.frameLength > 0,let channels = buffer.floatChannelData else { break }
|
||
for i in 0..<Int(buffer.frameLength) {
|
||
var sample = 0.0
|
||
for c in 0..<Int(format.channelCount) { let value = Double(channels[c][i*Int(buffer.stride)]);sample += value*value }
|
||
sum += sample/Double(format.channelCount);count += 1
|
||
if count == hop { envelope.append(sqrt(sum/Double(count)));count = 0;sum = 0 }
|
||
}
|
||
}
|
||
return estimate(envelope,rate:format.sampleRate/Double(hop))
|
||
}
|
||
}
|
||
|
||
enum DJTrackInfo {
|
||
static func artwork(_ song: Song) async -> NSImage? {
|
||
let asset = AVURLAsset(url:URL(fileURLWithPath:song.audio))
|
||
if let items = try? await asset.load(.commonMetadata),let item = items.first(where:{$0.commonKey == .commonKeyArtwork}),let data = try? await item.load(.dataValue),data.count <= 20_000_000,let image = NSImage(data:data) { return image }
|
||
return sidecar(song).flatMap{NSImage(contentsOf:$0)}
|
||
}
|
||
static func sidecar(_ song: Song) -> URL? {
|
||
let sources = [song.originalPath,song.audio].filter{!$0.isEmpty}.map{URL(fileURLWithPath:$0)}
|
||
for source in sources {
|
||
let folder = source.deletingLastPathComponent(),stem = source.deletingPathExtension().lastPathComponent.lowercased()
|
||
guard let files = try? FileManager.default.contentsOfDirectory(at:folder,includingPropertiesForKeys:[.fileSizeKey,.isRegularFileKey],options:[.skipsHiddenFiles]) else { continue }
|
||
let candidates = files.filter { url in
|
||
guard ["jpg","jpeg","png"].contains(url.pathExtension.lowercased()),let values = try? url.resourceValues(forKeys:[.fileSizeKey,.isRegularFileKey]) else { return false }
|
||
return values.isRegularFile == true && (values.fileSize ?? Int.max) <= 20_000_000
|
||
}
|
||
func priority(_ url: URL) -> Int { let name = url.deletingPathExtension().lastPathComponent.lowercased();return name == stem ? 0 : ["cover","folder","front","artwork"].contains(name) ? 1 : 2 }
|
||
if let first = candidates.sorted(by:{priority($0) == priority($1) ? $0.lastPathComponent < $1.lastPathComponent : priority($0) < priority($1)}).first { return first }
|
||
}
|
||
return nil
|
||
}
|
||
}
|
||
|
||
private struct DJCueEditor: View {
|
||
@ObservedObject var system: DJSystem
|
||
var body: some View {
|
||
let deck = system.channel(system.cueEditor ?? "A")
|
||
VStack(alignment:.leading,spacing:18) {
|
||
Text("Deck \(deck.letter) · Cue Point").font(.title2.bold())
|
||
Text(deck.song?.title ?? "No track").foregroundStyle(.secondary)
|
||
HStack { Text("Position in seconds");TextField("Seconds",value:$system.cueDraft,format:.number.precision(.fractionLength(2))).textFieldStyle(.roundedBorder).frame(width:100);Text("/ "+DJStyle.stamp(deck.player.duration)).foregroundStyle(.secondary) }
|
||
Slider(value:$system.cueDraft,in:0...max(0.001,deck.player.duration)).accessibilityLabel("Cue point position")
|
||
Button("Use Current Playhead") { system.cueDraft = deck.player.time }
|
||
Text("Saving changes the cue point without moving or pausing playback. The CUE button pauses and returns to this position.").font(.caption).foregroundStyle(.secondary)
|
||
HStack { Button("Cancel") { system.cueEditing = false };Spacer();Button("Save Cue Point") { system.saveCue() }.keyboardShortcut(.defaultAction) }
|
||
}.padding(24).frame(width:470)
|
||
}
|
||
}
|