NextLevel + ARKit Recording Example

NextLevelARKitExample.swift

//
//  NextLevelARKitExample.swift
//  NextLevel + ARKit Example
//
//  The MIT License (MIT)
//
//  Copyright (c) 2016-present patrick piemonte (http://patrickpiemonte.com/)
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in all
//  copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//  SOFTWARE.

import UIKit
import NextLevel

public class MixedRealityViewController: UIViewController {

    // MARK: - ivars

    internal var _bufferRenderer: NextLevelBufferRenderer?

    // MARK: - object lifecycle
    
    public override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    }
    
    public required init?(coder aDecoder: NSCoder) {
        fatalError("\(#function) has not been implemented")
    }
    
    deinit {
    }

    // MARK: - view lifecycle

    public override func viewDidLoad() {
        super.viewDidLoad()
        
 		// ... setup views

        // setup NextLevel
        let nextLevel = NextLevel.shared
        nextLevel.delegate = self
        nextLevel.deviceDelegate = self
        nextLevel.videoDelegate = self
        
        nextLevel.captureMode = .arKit
        nextLevel.isVideoCustomContextRenderingEnabled = true
        nextLevel.videoStabilizationMode = .off
        nextLevel.frameRate = 60

        // setup video out rendering
        self._bufferRenderer = NextLevelBufferRenderer(view: self._arView)
    }
	
}

// MARK: - ARSCNViewDelegate

extension MixedRealityViewController: ARSCNViewDelegate {

    public func renderer(_ renderer: SCNSceneRenderer, didRenderScene scene: SCNScene, atTime time: TimeInterval) {
        guard let _ = self._arView.pointOfView else {
            return
        }
        
        if NextLevel.shared.isRecording {
            if let _ = self._arView.session.currentFrame?.capturedImage {
                self._bufferRenderer?.renderer(renderer, didRenderScene: scene, atTime: time)
            }
        }
    }
    
}

// MARK: - NextLevelVideoDelegate

extension MixedRealityViewController: NextLevelVideoDelegate {

    // enabled by isCustomContextVideoRenderingEnabled
    public func nextLevel(_ nextLevel: NextLevel, renderToCustomContextWithImageBuffer imageBuffer: CVPixelBuffer, onQueue queue: DispatchQueue) {
        if let frame = self._bufferRenderer?.videoBufferOutput {
            nextLevel.videoCustomContextImageBuffer = frame
        }
    }

}

See also ➡️ https://github.com/NextLevel/examples