41 lines
1.5 KiB
Swift
41 lines
1.5 KiB
Swift
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internal import CPlaydate
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extension Sound {
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/// A tap into a delay line; produces audio and can be added to a channel
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/// as a source. Wraps `DelayLineTap`.
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public final class DelayLineTap: Source {
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private static var api: UnsafePointer<playdate_sound_effect_delayline> { Playdate.delayLineAPI.unsafelyUnwrapped }
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/// The delay line is retained so the tap stays valid.
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private let delayLine: DelayLine
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private var retainedDelayModulator: SignalValue?
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init(pointer: OpaquePointer, delayLine: DelayLine) {
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self.delayLine = delayLine
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super.init(pointer: pointer, isOwned: true)
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}
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deinit {
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DelayLineTap.api.pointee.freeTap.unsafelyUnwrapped(pointer)
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}
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/// The tap's position in the delay line, in frames.
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public func setDelay(frames: Int) {
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DelayLineTap.api.pointee.setTapDelay.unsafelyUnwrapped(pointer, Int32(frames))
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}
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public var delayModulator: SignalValue? {
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get { SignalValue.wrap(DelayLineTap.api.pointee.getTapDelayModulator.unsafelyUnwrapped(pointer)) }
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set {
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retainedDelayModulator = newValue
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DelayLineTap.api.pointee.setTapDelayModulator.unsafelyUnwrapped(pointer, newValue?.pointer)
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}
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}
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/// For stereo delay lines: swaps the left and right channels.
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public func setChannelsFlipped(_ flipped: Bool) {
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DelayLineTap.api.pointee.setTapChannelsFlipped.unsafelyUnwrapped(pointer, flipped ? 1 : 0)
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}
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}
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}
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