Change Input/Output Audio Device - iOS

During the meeting at any point a participant wishes to switch his/her audio device, it can be done using the below mentioned methods.

Changing Input/Output Audio Device

getMics()

• The getMics() method will return an array of tuples, where each tuple consists of two elements deviceName and deviceType.

• returns [deviceName: String, deviceType: String]

Example

Swift

let devices = meeting.getMics()
for device in devices {
    print(device.deviceName)  //sample output [("Speaker","Speaker"), ("iPhone Microphone", "Receiver")]
}

changeMic()

• Participant can change the audio device using changeMic(selectedDevice: String) method of Meeting classs

Example

Swift

func changeAudioDevice(device: String) {
    changeMic(selectedDevice: "Speaker") //output will be changed to speaker
}

caution

selectedDevice string should only be from the deviceName that you get from the returned array of getMics().

Events

onMicChanged - Changing Mic will trigger onMicChanged event.

Swift

extension MeetingViewController: MeetingEventListener {

    /// Mic is Changed
    /// - Parameter selectedDevice: String
     func onMicChanged(selectedDevice: String) {

        print("Mic Changed to: \(selectedDevice)") //example: Mic changed to Speaker

        print("Available Devices:")

        let devices = self.meeting?.getMics() ?? []
        for device in devices {
            print(device.deviceName)
        }
    }
}

Sample output

Mic changed to Speaker
Available Devices:
Speaker
iPhone Microphone
Headphones

Changing Camera Input Device

switchWebcam()

• By using switchWebcam() function, a participant can stream from front / rear camera during the meeting.

Example

Swift

/// keep track of camera position
private var cameraPosition = CameraPosition.front

@IBAction func cameraButtonTapped(_ sender: Any) {
    cameraPosition.toggle()

    // switch camera to front/back
    // Values: .front, .back
    self.meeting?.switchWebcam(position: cameraPosition)
}

API Reference

The API references for all the methods and events utilised in this guide are provided below.

• switchWebcam()
• getMics()
• changeMic()
• onMicChanged()