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#12 ReplayGain - added custom node + fx unit + id3 parsing
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....xcodeproj/project.xcworkspace/xcuserdata/kven.xcuserdatad/UserInterfaceState.xcuserstate
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // | ||
| // ReplayGainNode.swift | ||
| // Aural | ||
| // | ||
| // Copyright © 2021 Kartik Venugopal. All rights reserved. | ||
| // | ||
| // This software is licensed under the MIT software license. | ||
| // See the file "LICENSE" in the project root directory for license terms. | ||
| // | ||
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| import AVFoundation | ||
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| /// | ||
| /// A custom subclass of **AVAudioUnitEQ** that applies a "ReplayGain" effect through its "replayGain" and "preAmp" properties. | ||
| /// | ||
| class ReplayGainNode: AVAudioUnitEQ { | ||
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| static let validGainRange: ClosedRange<Float> = -20...20 | ||
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| override init() {super.init(numberOfBands: 0)} | ||
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| fileprivate init(_ numBands: Int) { | ||
| super.init(numberOfBands: 0) | ||
| } | ||
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| override var globalGain: Float { | ||
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| get {super.globalGain} | ||
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| // globalGain cannot be set externally | ||
| set {} | ||
| } | ||
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| var replayGain: Float = 0 { | ||
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| didSet { | ||
| super.globalGain = (replayGain + preAmp).clamped(to: Self.validGainRange) | ||
| } | ||
| } | ||
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| var preAmp: Float = 0 { | ||
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| didSet { | ||
| super.globalGain = (replayGain + preAmp).clamped(to: Self.validGainRange) | ||
| } | ||
| } | ||
| } |
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