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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,161 @@ | ||
| // | ||
| // AudioUnit+Extension.swift | ||
| // HaishinKit | ||
| // | ||
| // Created by Lev Sokolov on 2024-03-06. | ||
| // | ||
|
|
||
| import AudioUnit | ||
|
|
||
| extension AudioNode: CustomStringConvertible { | ||
| public var description: String { | ||
| var description: [String] = [] | ||
|
|
||
| for scope in BusScope.allCases { | ||
| guard let busCount = try? busCount(scope: scope) else { | ||
| description.append("failed to get \(scope.rawValue) bus count") | ||
| continue | ||
| } | ||
| guard busCount > 0 else { | ||
| continue | ||
| } | ||
| var busDescription: [String] = [] | ||
| for busIndex in 0..<busCount { | ||
| guard let asbd = try? format(bus: busIndex, scope: scope) else { | ||
| busDescription.append("failed to get \(scope.rawValue) bus format for bus \(busIndex)") | ||
| continue | ||
| } | ||
| if let mixerNode = self as? MixerNode, let volume = try? mixerNode.volume(bus: busIndex, of: scope) { | ||
| if scope != .input || scope == .input && (try? mixerNode.isEnabled(bus: busIndex, scope: scope)) ?? false { | ||
| busDescription.append("bus: \(busIndex), volume: \(volume), format: \(asbd)") | ||
| } | ||
| } else { | ||
| busDescription.append("bus: \(busIndex), format: \(asbd)") | ||
| } | ||
| } | ||
|
|
||
| description.append("\(scope.rawValue) \(busDescription.count)/\(busCount)") | ||
| description.append(busDescription.joined(separator: "; ")) | ||
| } | ||
|
|
||
| let parametersList = (try? parameters) ?? [] | ||
| if !parametersList.isEmpty { | ||
| description.append("parameters: ") | ||
| for parameter in parametersList { | ||
| description.append("\(parameter)") | ||
| } | ||
| } | ||
|
|
||
| return "AudioNode(\(description.joined(separator: "; ")))" | ||
| } | ||
|
|
||
| private var parameters: [AudioUnitParameter] { | ||
| get throws { | ||
| var result = [AudioUnitParameter]() | ||
| var status: OSStatus = noErr | ||
|
|
||
| var parameterListSize: UInt32 = 0 | ||
| AudioUnitGetPropertyInfo(audioUnit, | ||
| kAudioUnitProperty_ParameterList, | ||
| kAudioUnitScope_Global, | ||
| 0, | ||
| ¶meterListSize, | ||
| nil) | ||
|
|
||
| let numberOfParameters = Int(parameterListSize) / MemoryLayout<AudioUnitParameterID>.size | ||
| let parameterIds = UnsafeMutablePointer<AudioUnitParameterID>.allocate(capacity: numberOfParameters) | ||
| defer { parameterIds.deallocate() } | ||
|
|
||
| if numberOfParameters > 0 { | ||
| status = AudioUnitGetProperty(audioUnit, | ||
| kAudioUnitProperty_ParameterList, | ||
| kAudioUnitScope_Global, | ||
| 0, | ||
| parameterIds, | ||
| ¶meterListSize) | ||
| guard status == noErr else { | ||
| throw AudioNodeError.unableToRetrieveValue(status) | ||
| } | ||
| } | ||
|
|
||
| var info = AudioUnitParameterInfo() | ||
| var infoSize = UInt32(MemoryLayout<AudioUnitParameterInfo>.size) | ||
|
|
||
| for i in 0..<numberOfParameters { | ||
| let id = parameterIds[i] | ||
| status = AudioUnitGetProperty(audioUnit, | ||
| kAudioUnitProperty_ParameterInfo, | ||
| kAudioUnitScope_Global, | ||
| id, | ||
| &info, | ||
| &infoSize) | ||
| guard status == noErr else { | ||
| throw AudioNodeError.unableToRetrieveValue(status) | ||
| } | ||
| result.append(AudioUnitParameter(info, id: id)) | ||
| } | ||
|
|
||
| return result | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private struct AudioUnitParameter: CustomStringConvertible { | ||
| var id: Int | ||
| var name: String = "" | ||
| var minValue: Float | ||
| var maxValue: Float | ||
| var defaultValue: Float | ||
| var unit: AudioUnitParameterUnit | ||
|
|
||
| init(_ info: AudioUnitParameterInfo, id: AudioUnitParameterID) { | ||
| self.id = Int(id) | ||
| if let cfName = info.cfNameString?.takeUnretainedValue() { | ||
| name = String(cfName) | ||
| } | ||
| minValue = info.minValue | ||
| maxValue = info.maxValue | ||
| defaultValue = info.defaultValue | ||
| unit = info.unit | ||
| } | ||
|
|
||
| var description: String { | ||
| return "\(name), id: \(id), min: \(minValue), max: \(maxValue), default: \(defaultValue), unit: \(unit) \(unitName)" | ||
| } | ||
|
|
||
| var unitName: String { | ||
| switch unit { | ||
| // swiftlint:disable switch_case_on_newline | ||
| case .generic: return "generic" | ||
| case .indexed: return "indexed" | ||
| case .boolean: return "boolean" | ||
| case .percent: return "percent" | ||
| case .seconds: return "seconds" | ||
| case .sampleFrames: return "sampleFrames" | ||
| case .phase: return "phase" | ||
| case .rate: return "rate" | ||
| case .hertz: return "hertz" | ||
| case .cents: return "cents" | ||
| case .relativeSemiTones: return "relativeSemiTones" | ||
| case .midiNoteNumber: return "midiNoteNumber" | ||
| case .midiController: return "midiController" | ||
| case .decibels: return "decibels" | ||
| case .linearGain: return "linearGain" | ||
| case .degrees: return "degrees" | ||
| case .equalPowerCrossfade: return "equalPowerCrossfade" | ||
| case .mixerFaderCurve1: return "mixerFaderCurve1" | ||
| case .pan: return "pan" | ||
| case .meters: return "meters" | ||
| case .absoluteCents: return "absoluteCents" | ||
| case .octaves: return "octaves" | ||
| case .BPM: return "BPM" | ||
| case .beats: return "beats" | ||
| case .milliseconds: return "milliseconds" | ||
| case .ratio: return "ratio" | ||
| case .customUnit: return "customUnit" | ||
| case .midi2Controller: return "midi2Controller" | ||
| default: return "unknown_\(unit)" | ||
| // swiftlint:enable switch_case_on_newline | ||
| } | ||
| } | ||
| } |
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