适用于 iOS 的相机设备指南

// [START get_device_information]
let vendorName = basicInfoTrait.attributes.vendorName!
let vendorID = basicInfoTrait.attributes.vendorID!
let productID = basicInfoTrait.attributes.productID!
let productName = basicInfoTrait.attributes.productName!
let softwareVersion = basicInfoTrait.attributes.softwareVersion!
let serialNumber = basicInfoTrait.attributes.serialNumber!
// [END get_device_information]

if let lastContactTimeStamp = extendedGeneralDiagnosticsTrait.attributes.lastContactTimestamp {
  self.lastContactTime = Date(timeIntervalSince1970: Double(lastConnectedTimeStamp))
}

let lightConnectivity =
  dimmableLightDeviceType.metadata.sourceConnectivity
  .connectivityState

public func sendOffer(offerSdp: String) async throws
-> (answerSdp: String, mediaSessionId: String, liveViewDuration: TimeInterval)
{
  do {
    // Sending StartLiveView command
    let response = try await liveViewTrait.startLiveView(
      offerSdp: offerSdp
    )
    // Received StartLiveView response
    return (
      answerSdp: response.answerSdp,
      mediaSessionId: response.mediaSessionId,
      liveViewDuration: TimeInterval(response.liveSessionDurationSeconds)
    )
  } catch {
    // Failed to send StartLiveView command
    throw error
  }
}

public func extendLiveView(mediaSessionId: String) async throws {
  do {
    // Extending live view
    let extendedDuration = try await liveViewTrait.extendLiveView(mediaSessionId: mediaSessionId)
  } catch {
    // Failed to extend live view
    throw error
  }
}

public func toggleTwoWayTalk(isOn: Bool, mediaSessionId: String) async throws {
  do {
    if isOn {
      try await liveViewTrait.startTalkback(mediaSessionId: mediaSessionId)
    } else {
      try await liveViewTrait.stopTalkback(mediaSessionId: mediaSessionId)
    }
  } catch {
    throw HomeError.commandFailed("Failed to toggle twoWayTalk: \(error)")
  }
}

public func toggleIsRecording(isOn: Bool) {
  self.uiState = .loading

  guard let pushAvStreamTransportTrait else {
    // PushAvStreamTransportTrait not found.
    return
  }
  Task {
    do {
      try await pushAvStreamTransportTrait.setTransportStatus(
        transportStatus: isOn ? .active : .inactive)
      if isOn {
        do {
          self.player = try self.createWebRtcPlayer()
        } catch {
          // Failed to initialize WebRtcPlayer
          self.uiState = .disconnected
          return
        }
        await self.player?.initialize()
        self.uiState = .live
      } else {
        self.player = nil
        self.uiState = .off
      }
    } catch {
      // Failed to toggle onOff
    }
  }
}

public func isDeviceRecording() -> Bool {
  guard let pushAvStreamTransportTrait else {
    // PushAvStreamTransportTrait not found.
    return false
  }
  guard
    let hasActiveConnection =
      pushAvStreamTransportTrait
      .attributes
      .currentConnections?
      .contains(where: { $0.transportStatus == .active })
  else {
    return false
  }
  return hasActiveConnection
}

// Example energyBalances list
{
  "energy_balances": [
    {
      "step": 0,
      "label": "EXTENDED"
    },
    {
      "step": 50,
      "label": "BALANCED"
    },
    {
      "step": 100,
      "label": "PERFORMANCE"
    }
  ]
}

private func setBatteryUsage(to option: UInt8) async throws {
  _ = try await energyPreferenceTrait.update {
    $0.setCurrentEnergyBalance(option)
  }
}

private func setAutoBatterySaver(to value: Bool) async throws {
  _ = try await energyPreferenceTrait.update {
    $0.setCurrentLowPowerModeSensitivity(value ? 1 : 0)
  }
}

self.chargingState = powerSourceTrait.attributes.batChargeState

var description: String
switch self.chargingState {
case .isCharging:
  description = "Charging"
case .isAtFullCharge:
  description = "Full"
case .isNotCharging:
  description = "Not Charging"
default:
  description = "Unknown"
}

self.batteryLevel = powerSourceTrait.attributes.batChargeLevel

var description: String
switch self.batteryLevel {
case .ok:
  description = "OK"
case .warning:
  description = "Warning"
case .critical:
  description = "Critical"
default:
  description = "Unknown"
}

if powerSourceTrait.attributes.wiredPresent ?? false {
  self.powerSourceType = .wired
} else if powerSourceTrait.attributes.batPresent ?? false {
  self.powerSourceType = .battery
} else {
  self.powerSourceType = nil
}

// Turn the device's microphone on or off
func setMicrophone(on: Bool) async {
  do {
    _ = try await self.cameraAvStreamManagementTrait?.update {
      $0.setMicrophoneMuted(!on)
    }
  } catch {
    // Error
  }
}

// Turn audio recording on or off for the device
func setAudioRecording(on: Bool) async {
  do {
    _ = try await self.cameraAvStreamManagementTrait?.update {
      $0.setRecordingMicrophoneMuted(!on)
    }
  } catch {
    // Error
  }
}

// Adjust the camera speaker volume
func setSpeakerVolume(to value: UInt8) async {
  do {
    _ = try await cameraAvStreamManagementTrait.update {
      $0.setSpeakerVolumeLevel(value)
    }
  } catch {
    // Error
  }
}

let zoneManagementTrait: Google.ZoneManagementTrait

self.zones = zoneManagementTrait.attributes.zones ?? []

import GoogleHomeSDK
import GoogleHomeTypes

func createFrontPorchZone(trait: Google.ZoneManagementTrait) async {
  // 1. Define the vertices for the zone (2D Cartesian coordinates)
  // Values are UInt16, typically scaled to the device's twoDCartesianMax.
  let vertices = [
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 260, y = 422),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 1049, y = 0),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 2048, y = 0),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 2048, y = 950),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 1630, y = 1349),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 880, y = 2048),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 0, y = 2048),
    Google.ZoneManagementTrait.TwoDCartesianVertexStruct(x = 638, y = 1090)
  ]

  // 2. Define the zone structure using the given SDK struct
  let newZone = Google.ZoneManagementTrait.TwoDCartesianZoneStruct(
    name: "Front Porch",
    use: [.motion], // ZoneUseEnum.motion
    vertices: vertices,
    // Color is a hex string (for example, Salmon/Pink)
    color: "#F439A0"
  )

  do {
    // 3. Execute the raw command to add the zone to the device
    // This returns the created zone's ID (UInt16).
    var newZoneID = try await trait.createTwoDCartesianZone(zone: newZone)
  } catch {
    // Error
  }
}

let zoneManagementTrait: Google.ZoneManagementTrait
let zoneID: UInt16
let zone: Google.ZoneManagementTrait.TwoDCartesianZoneStruct

do {
  _ = try await zoneManagementTrait.updateTwoDCartesianZone(
        zoneID: zoneID, zone: zone)
} catch {
  // Error
}

let zoneManagementTrait: Google.ZoneManagementTrait
let zoneID: UInt16

do {
  _ = try await zoneManagementTrait.removeZone(zoneID: zoneID)
} catch {
  // Error
}

// Example struct to store event triggers
public struct EventTrigger: Equatable {
  public var id: Google.AvStreamAnalysisTrait.EventTriggerTypeEnum
  public var enabled: Bool
}

let avStreamAnalysisTrait: Google.AvStreamAnalysisTrait

let possibleEventTriggers = avStreamAnalysisTrait.attributes.supportedEventTriggers ?? []
let enabledEventTriggers = avStreamAnalysisTrait.attributes.enabledEventTriggers ?? []

let eventTriggers [EventTrigger] = []
for trigger in possibleEventTriggers {
  self.eventTriggers.append(
    EventTrigger(
      id: trigger,
      enabled: enabledEventTriggers.contains(trigger)
    )
  )
}

// Example struct to store event triggers
public struct EventTrigger: Equatable {
  public var id: Google.AvStreamAnalysisTrait.EventTriggerTypeEnum
  public var enabled: Bool
}

let avStreamAnalysisTrait: Google.AvStreamAnalysisTrait
let eventTriggers: [EventTrigger]

let enabledEventTriggers = eventTriggers.map {
  Google.AvStreamAnalysisTrait.EventTriggerEnablement(
    eventTriggerType: $0.id,
    enablementStatus: $0.enabled ? .enabled : .disabled
  )
}

try await avStreamAnalysisTrait.setOrUpdateEventDetectionTriggers(
  eventTriggerEnablements: enabledEventTriggers
)

// Example struct to store recording modes.
public struct RecordingMode: Hashable {
  public let id: UInt8
  public let mode: Google.RecordingModeTrait.RecordingModeEnum
}

let recordingModeTrait: Google.RecordingModeTrait

if let availableRecordingModes = recordingModeTrait.attributes.availableRecordingModes,
   let supportedRecordingModes = recordingModeTrait.attributes.supportedRecordingModes,
   let selectedRecordingMode = recordingModeTrait.attributes.selectedRecordingMode {

  var recordingModes: [RecordingMode] = []

  for recordingModeId in availableRecordingModes {
    guard Int(recordingModeId) < supportedRecordingModes.count,
          Int(recordingModeId) >= 0 else {
      // Out of bounds error
    }

    recordingModes.append(
      RecordingMode(
        id: recordingModeId,
        mode: supportedRecordingModes[Int(recordingModeId)].recordingMode,
      )
    )
  }
}

let recordingModeTrait: Google.RecordingModeTrait
let recordingModeID: UInt8

_ = try await recordingModeTrait.update {
  $0.setSelectedRecordingMode(recordingModeID)
}

// Change the camera's image orientation
// Value must be 0 or 180
func setImageRotation(to value: UInt16) async {
  do {
    _ = try await cameraAvStreamManagementTrait.update {
      $0.setImageRotation(value)
    }
  } catch {
    // Error
  }
}

// Turn night vision on or off
func setNightVision(
  to value: Google.CameraAvStreamManagementTrait.TriStateAutoEnum
) async {
  do {
    _ = try await cameraAvStreamManagementTrait.update {
      $0.setNightVision(value)
    }
  } catch {
    // Error
  }
}

// Set the LED brightness
func setStatusLightBrightness(
  to value: Google.CameraAvStreamManagementTrait.ThreeLevelAutoEnum
) async {
  do {
    _ = try await cameraAvStreamManagementTrait.update {
      $0.setStatusLightBrightness(value)
    }
  } catch {
    // Error
  }
}

(x1,y1) -- (x2,y1)
   |          |
(x1,y2) -- (x2,y2)

func setCrop(x1: UInt16, y1: UInt16, x2: UInt16, y2: UInt16) {

  let viewport = Google.CameraAvStreamManagementTrait.ViewportStruct(
    x1: x1,
    y1: y1,
    x2: x2,
    y2: y2
  )

  Task {
    do {
      try await cameraAvStreamManagementTrait.update {
        $0.setViewport(viewport)
      }
    } catch {
      // Error
    }
  }

}

func getTransportOptions(
  transportOptions: Google.PushAvStreamTransportTrait.TransportOptionsStruct,
  wakeUpSensitivity: UInt8?,
  maxEventLength: UInt32?
) async throws
  -> Google.PushAvStreamTransportTrait.TransportOptionsStruct
{

  var newMotionTimeControl:
    Google.PushAvStreamTransportTrait.TransportMotionTriggerTimeControlStruct? = nil
  if let maxEventLength {
    guard let motionTimeControl = transportOptions.triggerOptions.motionTimeControl else {
      throw HomeError.failedPrecondition(
        // Error - cannot update max event length without motion time control
    }
    newMotionTimeControl =
      Google.PushAvStreamTransportTrait.TransportMotionTriggerTimeControlStruct(
        initialDuration: motionTimeControl.initialDuration,
        augmentationDuration: motionTimeControl.augmentationDuration,
        maxDuration: maxEventLength,
        blindDuration: motionTimeControl.blindDuration
      )
  }

  return Google.PushAvStreamTransportTrait.TransportOptionsStruct(
    streamUsage: .recording,
    videoStreamID: nil,
    audioStreamID: nil,
    tlsEndpointID: transportOptions.tlsEndpointID,
    url: transportOptions.url,
    triggerOptions: Google.PushAvStreamTransportTrait.TransportTriggerOptionsStruct(
      triggerType: .motion,
      motionZones: nil,
      motionSensitivity: wakeUpSensitivity,
      motionTimeControl: newMotionTimeControl,
      maxPreRollLen: nil
    ),
    ingestMethod: .cmafIngest,
    containerOptions: Google.PushAvStreamTransportTrait.ContainerOptionsStruct(
      containerType: .cmaf,
      cmafContainerOptions: nil
    ),
    expiryTime: nil
  )
}

private func getRecordingConnection() async throws
  -> Google.PushAvStreamTransportTrait.TransportConfigurationStruct?
{
  guard let pushAvStreamTransportTrait else {
    // Error - PushAvStreamTransport trait not available
    return nil
  }

  let connections = try await pushAvStreamTransportTrait.findTransport().transportConfigurations

  for connection in connections {
    guard let transportOptions = connection.transportOptions,
      transportOptions.streamUsage == .recording
    else {
      continue
    }

    return connection
  }

  return nil
}

func setWakeUpSensitivity(to value: UInt8) async {
  do {
    let connection = try await getRecordingConnection()
    guard let connection,
      let transportOptions = connection.transportOptions
    else {
      // Error - Transport options not available
      return
    }

    guard transportOptions.triggerOptions.motionSensitivity != nil else {
      // Error - Motion sensitivity not available to be updated for this device
      return
    }

    try await pushAvStreamTransportTrait.modifyPushTransport(
      connectionID: connection.connectionID,
      transportOptions: self.getTransportOptions(
        transportOptions: transportOptions,
        wakeUpSensitivity: value,
        maxEventLength: nil
      )
    )

  } catch {
    // Error
  }
}

func setMaxEventLength(to value: UInt32) async {
  do {
    let connection = try await getRecordingConnection()
    guard let connection,
      let transportOptions = connection.transportOptions
    else {
      // Error - Transport options not available
      return
    }

    guard transportOptions.triggerOptions.motionTimeControl != nil else {
      // Error - Motion time control not available to be updated for this device
      return
    }

    try await pushAvStreamTransportTrait.modifyPushTransport(
      connectionID: connection.connectionID,
      transportOptions: self.getTransportOptions(
        transportOptions: transportOptions,
        wakeUpSensitivity: nil,
        maxEventLength: value
      )
    )

  } catch {
    // Error
  }
}

// Enable analytics
_ = try await extendedGeneralDiagnosticsTrait.update {
  $0.setAnalyticsEnabled(true)
}

// Disable analytics
_ = try await extendedGeneralDiagnosticsTrait.update {
  $0.setAnalyticsEnabled(false)
}