82 lines
4.2 KiB
Swift
82 lines
4.2 KiB
Swift
import CoreAudio
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import CoreMediaIO
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import Foundation
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/// 摄像头与麦克风是否正被某个进程使用。只读设备的“正在运行”属性，不打开设备，也不需要隐私授权
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public struct MediaUsage: Sendable, Equatable {
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public var camera = false
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public var microphone = false
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public init(camera: Bool = false, microphone: Bool = false) {
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self.camera = camera
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self.microphone = microphone
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}
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}
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public enum MediaUsageSampler {
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public static func sample() -> MediaUsage {
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MediaUsage(camera: cameraInUse(), microphone: microphoneInUse())
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}
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// MARK: 麦克风（Core Audio）
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private static func microphoneInUse() -> Bool {
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audioDevices().contains { device in
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hasInputStreams(device) && audioFlag(device, kAudioDevicePropertyDeviceIsRunningSomewhere)
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}
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}
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private static func audioDevices() -> [AudioObjectID] {
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var address = AudioObjectPropertyAddress(mSelector: kAudioHardwarePropertyDevices,
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mScope: kAudioObjectPropertyScopeGlobal,
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mElement: kAudioObjectPropertyElementMain)
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var size: UInt32 = 0
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let system = AudioObjectID(kAudioObjectSystemObject)
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guard AudioObjectGetPropertyDataSize(system, &address, 0, nil, &size) == noErr, size > 0 else { return [] }
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var devices = [AudioObjectID](repeating: 0, count: Int(size) / MemoryLayout<AudioObjectID>.size)
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guard AudioObjectGetPropertyData(system, &address, 0, nil, &size, &devices) == noErr else { return [] }
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return devices
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}
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private static func hasInputStreams(_ device: AudioObjectID) -> Bool {
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var address = AudioObjectPropertyAddress(mSelector: kAudioDevicePropertyStreams,
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mScope: kAudioObjectPropertyScopeInput,
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mElement: kAudioObjectPropertyElementMain)
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var size: UInt32 = 0
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return AudioObjectGetPropertyDataSize(device, &address, 0, nil, &size) == noErr && size > 0
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}
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private static func audioFlag(_ device: AudioObjectID, _ selector: AudioObjectPropertySelector) -> Bool {
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var address = AudioObjectPropertyAddress(mSelector: selector,
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mScope: kAudioObjectPropertyScopeGlobal,
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mElement: kAudioObjectPropertyElementMain)
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var value: UInt32 = 0
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var size = UInt32(MemoryLayout<UInt32>.size)
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return AudioObjectGetPropertyData(device, &address, 0, nil, &size, &value) == noErr && value != 0
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}
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// MARK: 摄像头（Core Media IO）
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private static func cameraInUse() -> Bool {
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var address = CMIOObjectPropertyAddress(mSelector: CMIOObjectPropertySelector(kCMIOHardwarePropertyDevices),
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mScope: CMIOObjectPropertyScope(kCMIOObjectPropertyScopeGlobal),
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mElement: CMIOObjectPropertyElement(kCMIOObjectPropertyElementMain))
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let system = CMIOObjectID(kCMIOObjectSystemObject)
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var size: UInt32 = 0
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guard CMIOObjectGetPropertyDataSize(system, &address, 0, nil, &size) == noErr, size > 0 else { return false }
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var devices = [CMIOObjectID](repeating: 0, count: Int(size) / MemoryLayout<CMIOObjectID>.size)
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var used: UInt32 = 0
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guard CMIOObjectGetPropertyData(system, &address, 0, nil, size, &used, &devices) == noErr else { return false }
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return devices.contains { device in
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var running = CMIOObjectPropertyAddress(mSelector: CMIOObjectPropertySelector(kCMIODevicePropertyDeviceIsRunningSomewhere),
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mScope: CMIOObjectPropertyScope(kCMIOObjectPropertyScopeWildcard),
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mElement: CMIOObjectPropertyElement(kCMIOObjectPropertyElementWildcard))
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var value: UInt32 = 0
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var valueUsed: UInt32 = 0
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return CMIOObjectGetPropertyData(device, &running, 0, nil, UInt32(MemoryLayout<UInt32>.size), &valueUsed, &value) == noErr
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&& value != 0
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}
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}
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}
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