104 lines
3.0 KiB
Swift
104 lines
3.0 KiB
Swift
//
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// AVPlayerView.swift
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// MyTransparentVideoExample
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//
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// Created by Quentin on 27/10/2017.
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// Copyright © 2017 Quentin Fasquel. All rights reserved.
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//
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import AVFoundation
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import UIKit
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public class AVPlayerView: UIView {
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deinit {
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playerItem = nil
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}
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public override class var layerClass: AnyClass {
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return AVPlayerLayer.self
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}
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public var playerLayer: AVPlayerLayer {
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return layer as! AVPlayerLayer
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}
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public private(set) var player: AVPlayer? {
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set { playerLayer.player = newValue }
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get { return playerLayer.player }
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}
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private var playerItemStatusObserver: NSKeyValueObservation?
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private(set) var playerItem: AVPlayerItem? = nil {
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didSet {
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// If `isLoopingEnabled` is called before the AVPlayer was set
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setupLooping()
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}
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}
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public func loadPlayerItem(_ playerItem: AVPlayerItem, onReady: ((Result<AVPlayer, Error>) -> Void)? = nil) {
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let player = AVPlayer(playerItem: playerItem)
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self.player = player
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self.playerItem = playerItem
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guard let completion = onReady else {
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playerItemStatusObserver = nil
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return
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}
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playerItemStatusObserver = playerItem.observe(\.status) { [weak self] item, _ in
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switch item.status {
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case .failed:
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completion(.failure(item.error!))
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case .readyToPlay:
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completion(.success(player))
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// Stop observing
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self?.playerItemStatusObserver = nil
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case .unknown:
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break
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@unknown default:
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fatalError()
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}
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}
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}
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// MARK: - Looping Handler
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/// When set to `true`, the player view automatically adds an observer on its AVPlayer,
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/// and it will play again from start every time playback ends.
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/// * Warning: This will not result in a smooth video loop.
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public var isLoopingEnabled: Bool = false {
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didSet { setupLooping() }
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}
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private var didPlayToEndTimeObsever: NSObjectProtocol? = nil {
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willSet(newObserver) {
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// When updating didPlayToEndTimeObserver,
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// automatically remove its previous value from the Notification Center
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if let observer = didPlayToEndTimeObsever, didPlayToEndTimeObsever !== newObserver {
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NotificationCenter.default.removeObserver(observer)
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}
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}
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}
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private func setupLooping() {
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guard let playerItem = self.playerItem, let player = self.player else {
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return
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}
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guard isLoopingEnabled else {
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didPlayToEndTimeObsever = nil
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return
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}
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didPlayToEndTimeObsever = NotificationCenter.default.addObserver(
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forName: .AVPlayerItemDidPlayToEndTime, object: playerItem, queue: nil, using: { _ in
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player.seek(to: CMTime.zero) { _ in
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player.play()
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}
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})
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}
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}
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