import CoreMedia import Defaults import Foundation #if !os(macOS) import UIKit #endif protocol PlayerBackend { var suggestedPlaybackRates: [Double] { get } var model: PlayerModel! { get } var controls: PlayerControlsModel! { get } var playerTime: PlayerTimeModel! { get } var networkState: NetworkStateModel! { get } var stream: Stream? { get set } var video: Video? { get set } var currentTime: CMTime? { get } var loadedVideo: Bool { get } var isLoadingVideo: Bool { get } var isPlaying: Bool { get } var isSeeking: Bool { get } var playerItemDuration: CMTime? { get } var aspectRatio: Double { get } var controlsUpdates: Bool { get } var videoWidth: Double? { get } var videoHeight: Double? { get } func bestPlayable(_ streams: [Stream], maxResolution: ResolutionSetting) -> Stream? func canPlay(_ stream: Stream) -> Bool func canPlayAtRate(_ rate: Double) -> Bool func playStream( _ stream: Stream, of video: Video, preservingTime: Bool, upgrading: Bool ) func play() func pause() func togglePlay() func stop() func seek(to time: CMTime, seekType: SeekType, completionHandler: ((Bool) -> Void)?) func seek(to seconds: Double, seekType: SeekType, completionHandler: ((Bool) -> Void)?) func setRate(_ rate: Double) func closeItem() func closePiP() func startMusicMode() func stopMusicMode() func getTimeUpdates() func updateControls(completionHandler: (() -> Void)?) func startControlsUpdates() func stopControlsUpdates() func didChangeTo() func setNeedsNetworkStateUpdates(_ needsUpdates: Bool) func setNeedsDrawing(_ needsDrawing: Bool) func setSize(_ width: Double, _ height: Double) func cancelLoads() } extension PlayerBackend { func seek(to time: CMTime, seekType: SeekType, completionHandler: ((Bool) -> Void)? = nil) { model.seek.registerSeek(at: time, type: seekType, restore: currentTime) seek(to: time, seekType: seekType, completionHandler: completionHandler) } func seek(to seconds: Double, seekType: SeekType, completionHandler: ((Bool) -> Void)? = nil) { let seconds = CMTime.secondsInDefaultTimescale(seconds) model.seek.registerSeek(at: seconds, type: seekType, restore: currentTime) seek(to: seconds, seekType: seekType, completionHandler: completionHandler) } func seek(relative time: CMTime, seekType: SeekType, completionHandler: ((Bool) -> Void)? = nil) { if let currentTime, let duration = playerItemDuration { let seekTime = min(max(0, currentTime.seconds + time.seconds), duration.seconds) model.seek.registerSeek(at: .secondsInDefaultTimescale(seekTime), type: seekType, restore: currentTime) seek(to: seekTime, seekType: seekType, completionHandler: completionHandler) } } func eofPlaybackModeAction() { switch model.playbackMode { case .queue, .shuffle: if Defaults[.closeLastItemOnPlaybackEnd] { model.prepareCurrentItemForHistory(finished: true) } if model.queue.isEmpty { if Defaults[.closeLastItemOnPlaybackEnd] { model.resetQueue() model.hide() } } else { model.advanceToNextItem() } case .loopOne: model.backend.seek(to: .zero, seekType: .loopRestart) { _ in self.model.play() } case .related: guard let item = model.autoplayItem else { return } model.resetAutoplay() model.advanceToItem(item) } } func updateControls(completionHandler: (() -> Void)? = nil) { print("updating controls") guard model.presentingPlayer, !model.controls.presentingOverlays else { print("ignored controls update") completionHandler?() return } DispatchQueue.main.async(qos: .userInteractive) { #if !os(macOS) guard UIApplication.shared.applicationState != .background else { print("not performing controls updates in background") completionHandler?() return } #endif PlayerTimeModel.shared.currentTime = self.currentTime ?? .zero PlayerTimeModel.shared.duration = self.playerItemDuration ?? .zero completionHandler?() } } }