Picture-in-Picture

import CometChatCallsSDK

final class PiPCallViewController: UIViewController, PiPViewCoordinatorDelegate {

    private let callContainer = UIView()
    private var pipCoordinator: PiPViewCoordinator?

    override func viewDidLoad() {
        super.viewDidLoad()

        // The coordinator manages the SAME view the call is rendered into.
        let coordinator = PiPViewCoordinator(withView: callContainer)
        coordinator.delegate = self
        coordinator.initialPositionInSuperView = .lowerRightCorner
        coordinator.dragBoundInsets = UIEdgeInsets(top: 25, left: 8, bottom: 8, right: 8)

        // Pass the parent explicitly — with no argument it falls back to the key window.
        coordinator.configureAsStickyView(withParentView: view)
        coordinator.show()
        pipCoordinator = coordinator

        // ...then join the session into `callContainer` as usual.
    }

    /// Shrink to the floating tile.
    func enterPiP() {
        pipCoordinator?.enterPictureInPicture()   // resize + enable dragging + exit button
        CallSession.shared.enablePictureInPictureLayout()   // reshape the call UI to match
    }

    /// Called by the coordinator AFTER it has already restored the full-size view —
    /// this is a notification that PiP ended, not a request to end it.
    func exitPictureInPicture() {
        CallSession.shared.disablePictureInPictureLayout()
    }

    /// Keep the tile inside the screen on rotation or a size change.
    override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
        super.viewWillTransition(to: size, with: coordinator)
        coordinator.animate { [weak self] _ in
            guard let self else { return }
            self.pipCoordinator?.resetBounds(bounds: CGRect(origin: .zero, size: size))
        }
    }
}

CallSession.shared.enablePictureInPictureLayout()

CallSession.shared.disablePictureInPictureLayout()

class CallViewController: UIViewController, LayoutListener {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        CallSession.shared.addLayoutListener(self)
    }
    
    deinit {
        CallSession.shared.removeLayoutListener(self)
    }
    
    func onPictureInPictureLayoutEnabled() {
        print("Entered PiP mode")
        // Hide custom overlays or controls
        hideCustomControls()
    }

    func onPictureInPictureLayoutDisabled() {
        print("Exited PiP mode")
        // Show custom overlays or controls
        showCustomControls()
    }

    func onCallLayoutChanged(layoutType: LayoutType) {}
    func onParticipantListVisible() {}
    func onParticipantListHidden() {}
}

import AVFoundation

func configureAudioSession() {
    do {
        try AVAudioSession.sharedInstance().setCategory(
            .playAndRecord,
            mode: .videoChat,
            options: [.allowBluetooth, .defaultToSpeaker]
        )
        try AVAudioSession.sharedInstance().setActive(true)
    } catch {
        print("Failed to configure audio session: \(error)")
    }
}