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fix(ios): stabilize voice wake + bridge UI

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This commit is contained in:
Peter Steinberger
2025-12-13 12:28:34 +00:00
parent 2b71ea21ad
commit 3863fe6412
9 changed files with 60 additions and 34 deletions
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23
apps/ios/Sources/Voice/VoiceWakeManager.swift
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@@ -2,6 +2,13 @@ import AVFAudio
import Foundation
import Speech
private func makeAudioTapEnqueueCallback(queue: AudioBufferQueue) -> AVAudioNodeTapBlock {
{ buffer, _ in
// This callback is invoked on a realtime audio thread/queue. Keep it tiny and nonisolated.
queue.enqueueCopy(of: buffer)
}
}
private final class AudioBufferQueue: @unchecked Sendable {
private let lock = NSLock()
private var buffers: [AVAudioPCMBuffer] = []
@@ -41,7 +48,7 @@ extension AVAudioPCMBuffer {
let channels = Int(format.channelCount)
let frames = Int(frameLength)
for ch in 0..<channels {
dst[ch].assign(from: src[ch], count: frames)
dst[ch].update(from: src[ch], count: frames)
}
return copy
}
@@ -50,7 +57,7 @@ extension AVAudioPCMBuffer {
let channels = Int(format.channelCount)
let frames = Int(frameLength)
for ch in 0..<channels {
dst[ch].assign(from: src[ch], count: frames)
dst[ch].update(from: src[ch], count: frames)
}
return copy
}
@@ -59,7 +66,7 @@ extension AVAudioPCMBuffer {
let channels = Int(format.channelCount)
let frames = Int(frameLength)
for ch in 0..<channels {
dst[ch].assign(from: src[ch], count: frames)
dst[ch].update(from: src[ch], count: frames)
}
return copy
}
@@ -176,11 +183,11 @@ final class VoiceWakeManager: NSObject, ObservableObject {
let queue = AudioBufferQueue()
self.tapQueue = queue
inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { [weak queue] buffer, _ in
// `SFSpeechAudioBufferRecognitionRequest.append` is MainActor-isolated on iOS 26.
// Copy + enqueue in the realtime callback, drain + append from the MainActor.
queue?.enqueueCopy(of: buffer)
}
inputNode.installTap(
onBus: 0,
bufferSize: 1024,
format: recordingFormat,
block: makeAudioTapEnqueueCallback(queue: queue))
self.audioEngine.prepare()
try self.audioEngine.start()