84 lines
3.1 KiB
Swift
84 lines
3.1 KiB
Swift
//
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// Copyright (c) 2020 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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import AVFoundation
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public struct AudioSource: Hashable {
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public let localizedName: String
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public let portDescription: AVAudioSessionPortDescription?
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// The built-in loud speaker / aka speakerphone
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public let isBuiltInSpeaker: Bool
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// The built-in quiet speaker, aka the normal phone handset receiver earpiece
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public let isBuiltInEarPiece: Bool
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public init(localizedName: String, isBuiltInSpeaker: Bool, isBuiltInEarPiece: Bool, portDescription: AVAudioSessionPortDescription? = nil) {
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self.localizedName = localizedName
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self.isBuiltInSpeaker = isBuiltInSpeaker
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self.isBuiltInEarPiece = isBuiltInEarPiece
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self.portDescription = portDescription
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}
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public init(portDescription: AVAudioSessionPortDescription) {
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let isBuiltInEarPiece = portDescription.portType == AVAudioSession.Port.builtInMic
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// portDescription.portName works well for BT linked devices, but if we are using
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// the built in mic, we have "iPhone Microphone" which is a little awkward.
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// In that case, instead we prefer just the model name e.g. "iPhone" or "iPad"
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let localizedName = isBuiltInEarPiece ? UIDevice.current.localizedModel : portDescription.portName
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self.init(localizedName: localizedName,
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isBuiltInSpeaker: false,
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isBuiltInEarPiece: isBuiltInEarPiece,
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portDescription: portDescription)
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}
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// Speakerphone is handled separately from the other audio routes as it doesn't appear as an "input"
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public static var builtInSpeaker: AudioSource {
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return self.init(localizedName: NSLocalizedString("AUDIO_ROUTE_BUILT_IN_SPEAKER", comment: "action sheet button title to enable built in speaker during a call"),
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isBuiltInSpeaker: true,
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isBuiltInEarPiece: false)
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}
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// MARK: Hashable
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public static func ==(lhs: AudioSource, rhs: AudioSource) -> Bool {
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// Simply comparing the `portDescription` vs the `portDescription.uid`
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// caused multiple instances of the built in mic to turn up in a set.
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if lhs.isBuiltInSpeaker && rhs.isBuiltInSpeaker {
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return true
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}
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if lhs.isBuiltInSpeaker || rhs.isBuiltInSpeaker {
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return false
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}
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guard let lhsPortDescription = lhs.portDescription else {
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owsFailDebug("only the built in speaker should lack a port description")
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return false
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}
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guard let rhsPortDescription = rhs.portDescription else {
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owsFailDebug("only the built in speaker should lack a port description")
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return false
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}
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return lhsPortDescription.uid == rhsPortDescription.uid
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}
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public func hash(into hasher: inout Hasher) {
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guard let portDescription = self.portDescription else {
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assert(self.isBuiltInSpeaker)
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hasher.combine("Built In Speaker")
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return
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}
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hasher.combine(portDescription.uid)
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}
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}
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