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Guard check to validate device exists before AudioUnit setup

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This commit is contained in:
Beingpax 2026-01-11 12:22:59 +05:45
parent 8fce0475a5
commit c2c955c18b
1 changed files with 32 additions and 0 deletions
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32
VoiceInk/CoreAudioRecorder.swift
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@ -68,6 +68,12 @@ final class CoreAudioRecorder {
throw CoreAudioRecorderError.failedToSetDevice(status: 0) throw CoreAudioRecorderError.failedToSetDevice(status: 0)
} }
// Validate device still exists before proceeding with setup
guard isDeviceAvailable(deviceID) else {
logger.error("Cannot start recording - device \(deviceID) is no longer available")
throw CoreAudioRecorderError.deviceNotAvailable
}
currentDeviceID = deviceID currentDeviceID = deviceID
recordingURL = url recordingURL = url
@ -816,6 +822,29 @@ final class CoreAudioRecorder {
return status == noErr ? bufferSize : nil return status == noErr ? bufferSize : nil
} }
/// Checks if a device is currently available using Apple's kAudioDevicePropertyDeviceIsAlive
private func isDeviceAvailable(_ deviceID: AudioDeviceID) -> Bool {
var address = AudioObjectPropertyAddress(
mSelector: kAudioDevicePropertyDeviceIsAlive,
mScope: kAudioObjectPropertyScopeGlobal,
mElement: kAudioObjectPropertyElementMain
)
var isAlive: UInt32 = 0
var propertySize = UInt32(MemoryLayout<UInt32>.size)
let status = AudioObjectGetPropertyData(
deviceID,
&address,
0,
nil,
&propertySize,
&isAlive
)
return status == noErr && isAlive == 1
}
} }
// MARK: - Error Types // MARK: - Error Types
@ -823,6 +852,7 @@ final class CoreAudioRecorder {
enum CoreAudioRecorderError: LocalizedError { enum CoreAudioRecorderError: LocalizedError {
case audioUnitNotFound case audioUnitNotFound
case audioUnitNotInitialized case audioUnitNotInitialized
case deviceNotAvailable
case failedToCreateAudioUnit(status: OSStatus) case failedToCreateAudioUnit(status: OSStatus)
case failedToEnableInput(status: OSStatus) case failedToEnableInput(status: OSStatus)
case failedToDisableOutput(status: OSStatus) case failedToDisableOutput(status: OSStatus)
@ -841,6 +871,8 @@ enum CoreAudioRecorderError: LocalizedError {
return "HAL Output AudioUnit not found" return "HAL Output AudioUnit not found"
case .audioUnitNotInitialized: case .audioUnitNotInitialized:
return "AudioUnit not initialized" return "AudioUnit not initialized"
case .deviceNotAvailable:
return "Audio device is no longer available"
case .failedToCreateAudioUnit(let status): case .failedToCreateAudioUnit(let status):
return "Failed to create AudioUnit: \(status)" return "Failed to create AudioUnit: \(status)"
case .failedToEnableInput(let status): case .failedToEnableInput(let status):