c530367a04
New low-level recorder targeting devices directly. Includes device switching during recording, enhanced logging (transport type, format, buffer), and log export feature.
46 lines
1.6 KiB
Swift
46 lines
1.6 KiB
Swift
import Foundation
|
|
import AVFoundation
|
|
import CoreAudio
|
|
import os
|
|
|
|
/// Audio device configuration queries (does NOT modify system default device)
|
|
class AudioDeviceConfiguration {
|
|
private static let logger = Logger(subsystem: "com.prakashjoshipax.voiceink", category: "AudioDeviceConfiguration")
|
|
|
|
/// Gets the current system default input device (for reference only)
|
|
static func getDefaultInputDevice() -> AudioDeviceID? {
|
|
var defaultDeviceID = AudioDeviceID(0)
|
|
var propertySize = UInt32(MemoryLayout<AudioDeviceID>.size)
|
|
var address = AudioObjectPropertyAddress(
|
|
mSelector: kAudioHardwarePropertyDefaultInputDevice,
|
|
mScope: kAudioObjectPropertyScopeGlobal,
|
|
mElement: kAudioObjectPropertyElementMain
|
|
)
|
|
let status = AudioObjectGetPropertyData(
|
|
AudioObjectID(kAudioObjectSystemObject),
|
|
&address,
|
|
0,
|
|
nil,
|
|
&propertySize,
|
|
&defaultDeviceID
|
|
)
|
|
if status != noErr {
|
|
logger.error("Failed to get current default input device: \(status)")
|
|
return nil
|
|
}
|
|
return defaultDeviceID
|
|
}
|
|
|
|
/// Creates a device change observer that calls handler on the specified queue
|
|
static func createDeviceChangeObserver(
|
|
handler: @escaping () -> Void,
|
|
queue: OperationQueue = .main
|
|
) -> NSObjectProtocol {
|
|
return NotificationCenter.default.addObserver(
|
|
forName: NSNotification.Name("AudioDeviceChanged"),
|
|
object: nil,
|
|
queue: queue,
|
|
using: { _ in handler() }
|
|
)
|
|
}
|
|
} |