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Abbreviated form of SpeechClient.live
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import Combine | |
import ComposableArchitecture | |
import Speech | |
extension SpeechClient { | |
static let live = SpeechClient( | |
cancelTask: { id in | |
.fireAndForget { | |
dependencies[id]?.cancel() | |
dependencies[id] = nil | |
} | |
}, | |
finishTask: { id in | |
.fireAndForget { | |
dependencies[id]?.finish() | |
dependencies[id]?.subscriber.send(completion: .finished) | |
dependencies[id] = nil | |
} | |
}, | |
recognitionTask: { id, request in | |
Effect.run { subscriber in | |
let cancellable = AnyCancellable { | |
dependencies[id]?.cancel() | |
dependencies[id] = nil | |
} | |
let speechRecognizer = // … | |
let speechRecognizerDelegate = // … | |
speechRecognizer.delegate = speechRecognizerDelegate | |
let audioEngine = // … | |
// … | |
let inputNode = audioEngine.inputNode | |
let recognitionTask = // … | |
dependencies[id] = SpeechDependencies( | |
audioEngine: audioEngine, | |
inputNode: inputNode, | |
recognitionTask: recognitionTask, | |
speechRecognizer: speechRecognizer, | |
speechRecognizerDelegate: speechRecognizerDelegate, | |
subscriber: subscriber | |
) | |
// … | |
return cancellable | |
} | |
.cancellable(id: id) | |
}, | |
requestAuthorization: { /* … */ } | |
) | |
} | |
private struct SpeechDependencies { | |
let audioEngine: AVAudioEngine | |
let inputNode: AVAudioInputNode | |
let recognitionTask: SFSpeechRecognitionTask | |
let speechRecognizer: SFSpeechRecognizer | |
let speechRecognizerDelegate: SpeechRecognizerDelegate | |
let subscriber: Effect<SpeechClient.Action, SpeechClient.Error>.Subscriber | |
func finish() { | |
self.audioEngine.stop() | |
self.inputNode.removeTap(onBus: 0) | |
self.recognitionTask.finish() | |
} | |
func cancel() { | |
self.audioEngine.stop() | |
self.inputNode.removeTap(onBus: 0) | |
self.recognitionTask.cancel() | |
} | |
} | |
private var dependencies: [AnyHashable: SpeechDependencies] = [:] // ⇐ This lil’ bub. | |
private class SpeechRecognizerDelegate: NSObject, SFSpeechRecognizerDelegate { /* … */ } |
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