Simple Video Feed Frame Drop Example

FrameDropExampleVideoFeed.swift

import AsyncDisplayKit

class VideoFeedController: ASViewController<ASTableNode>, ASTableDataSource {
    
    required init() {
        super.init(node: ASTableNode.init(style: .plain))
        self.node.dataSource = self
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func numberOfSections(in tableNode: ASTableNode) -> Int {
        return 1
    }
    
    func tableNode(_ tableNode: ASTableNode, numberOfRowsInSection section: Int) -> Int {
        return 100
    }
    
    func tableNode(_ tableNode: ASTableNode, nodeBlockForRowAt indexPath: IndexPath) -> ASCellNodeBlock {
        return {
            return VideoCellNode()
        }
    }
}

class VideoCellNode: ASCellNode {
    
    let videoNode = ASVideoNode.init()
    
    let url: URL = URL(string: "http://devimages.apple.com/iphone/samples/bipbop/gear1/prog_index.m3u8")!
    
    override init() {
        super.init()
        self.automaticallyManagesSubnodes = true
        self.selectionStyle = .none
        videoNode.backgroundColor = .black
        videoNode.shouldAutorepeat = true
        videoNode.shouldAutoplay = true
    }
    
    override func didLoad() {
        super.didLoad()
        // setAsset MainThread Only
        self.videoNode.asset = AVAsset.init(url: url)
    }
   
    override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
        let videoRatioLayout = ASRatioLayoutSpec.init(ratio: 0.5, child: videoNode)
        let insets: UIEdgeInsets = .init(top: 10.0, left: 10.0, bottom: 10.0, right: 10.0)
        return ASInsetLayoutSpec.init(insets: insets, child: videoRatioLayout)
    }
}