mirror of
https://github.com/yattee/yattee.git
synced 2024-09-20 01:11:31 +00:00
589 lines
18 KiB
Swift
589 lines
18 KiB
Swift
import AVKit
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import Defaults
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import Foundation
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import Logging
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import MediaPlayer
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#if !os(macOS)
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import UIKit
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#endif
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import Siesta
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import SwiftUI
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import SwiftyJSON
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final class PlayerModel: ObservableObject {
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static let availableRates: [Float] = [0.5, 0.67, 0.8, 1, 1.25, 1.5, 2]
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let logger = Logger(label: "stream.yattee.app")
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private(set) var player = AVPlayer()
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private(set) var playerView = Player()
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var controller: PlayerViewController? { didSet { playerView.controller = controller } }
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#if os(tvOS)
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var avPlayerViewController: AVPlayerViewController?
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#endif
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@Published var presentingPlayer = false { didSet { pauseOnPlayerDismiss() } }
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@Published var stream: Stream?
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@Published var currentRate: Float = 1.0 { didSet { player.rate = currentRate } }
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@Published var availableStreams = [Stream]() { didSet { rebuildTVMenu() } }
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@Published var streamSelection: Stream? { didSet { rebuildTVMenu() } }
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@Published var queue = [PlayerQueueItem]() { didSet { Defaults[.queue] = queue } }
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@Published var currentItem: PlayerQueueItem! { didSet { Defaults[.lastPlayed] = currentItem } }
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@Published var history = [PlayerQueueItem]() { didSet { Defaults[.history] = history } }
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@Published var preservedTime: CMTime?
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@Published var playerNavigationLinkActive = false { didSet { pauseOnChannelPlayerDismiss() } }
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@Published var sponsorBlock = SponsorBlockAPI()
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@Published var segmentRestorationTime: CMTime?
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@Published var lastSkipped: Segment? { didSet { rebuildTVMenu() } }
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@Published var restoredSegments = [Segment]()
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@Published var channelWithDetails: Channel?
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var accounts: AccountsModel
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var comments: CommentsModel
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var composition = AVMutableComposition()
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var loadedCompositionAssets = [AVMediaType]()
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private var currentArtwork: MPMediaItemArtwork?
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private var frequentTimeObserver: Any?
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private var infrequentTimeObserver: Any?
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private var playerTimeControlStatusObserver: Any?
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private var statusObservation: NSKeyValueObservation?
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private var timeObserverThrottle = Throttle(interval: 2)
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var playingInPictureInPicture = false
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@Published var presentingErrorDetails = false
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var playerError: Error? { didSet {
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#if !os(tvOS)
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if !playerError.isNil {
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presentingErrorDetails = true
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}
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#endif
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}}
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init(accounts: AccountsModel? = nil, comments: CommentsModel? = nil) {
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self.accounts = accounts ?? AccountsModel()
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self.comments = comments ?? CommentsModel()
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addItemDidPlayToEndTimeObserver()
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addFrequentTimeObserver()
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addInfrequentTimeObserver()
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addPlayerTimeControlStatusObserver()
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}
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func presentPlayer() {
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presentingPlayer = true
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}
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func togglePlayer() {
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presentingPlayer.toggle()
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}
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var isPlaying: Bool {
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player.timeControlStatus == .playing
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}
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var time: CMTime? {
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currentItem?.playbackTime
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}
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var live: Bool {
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currentItem?.video?.live ?? false
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}
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var playerItemDuration: CMTime? {
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player.currentItem?.asset.duration
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}
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var videoDuration: TimeInterval? {
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currentItem?.duration ?? currentVideo?.length
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}
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func togglePlay() {
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isPlaying ? pause() : play()
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}
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func play() {
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guard player.timeControlStatus != .playing else {
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return
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}
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player.play()
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}
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func pause() {
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guard player.timeControlStatus != .paused else {
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return
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}
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player.pause()
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}
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func upgradeToStream(_ stream: Stream) {
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if !self.stream.isNil, self.stream != stream {
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playStream(stream, of: currentVideo!, preservingTime: true, upgrading: true)
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}
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}
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func playStream(
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_ stream: Stream,
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of video: Video,
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preservingTime: Bool = false,
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upgrading: Bool = false
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) {
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playerError = nil
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if !upgrading {
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resetSegments()
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sponsorBlock.loadSegments(
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videoID: video.videoID,
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categories: Defaults[.sponsorBlockCategories]
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) { [weak self] in
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if Defaults[.showChannelSubscribers] {
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self?.loadCurrentItemChannelDetails()
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}
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}
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}
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if let url = stream.singleAssetURL {
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logger.info("playing stream with one asset\(stream.kind == .hls ? " (HLS)" : ""): \(url)")
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insertPlayerItem(stream, for: video, preservingTime: preservingTime)
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} else {
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logger.info("playing stream with many assets:")
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logger.info("composition audio asset: \(stream.audioAsset.url)")
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logger.info("composition video asset: \(stream.videoAsset.url)")
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loadComposition(stream, of: video, preservingTime: preservingTime)
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}
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if !upgrading {
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updateCurrentArtwork()
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}
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}
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private func pauseOnPlayerDismiss() {
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if !playingInPictureInPicture, !presentingPlayer {
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
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self.pause()
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}
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}
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}
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private func pauseOnChannelPlayerDismiss() {
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if !playingInPictureInPicture, !playerNavigationLinkActive {
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
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self.pause()
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}
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}
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}
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private func insertPlayerItem(
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_ stream: Stream,
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for video: Video,
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preservingTime: Bool = false
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) {
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let playerItem = playerItem(stream)
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guard playerItem != nil else {
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return
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}
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attachMetadata(to: playerItem!, video: video, for: stream)
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DispatchQueue.main.async { [weak self] in
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guard let self = self else {
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return
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}
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self.stream = stream
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self.composition = AVMutableComposition()
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}
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let startPlaying = {
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#if !os(macOS)
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try? AVAudioSession.sharedInstance().setActive(true)
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#endif
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if self.isAutoplaying(playerItem!) {
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) { [weak self] in
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self?.play()
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}
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}
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}
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let replaceItemAndSeek = {
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self.player.replaceCurrentItem(with: playerItem)
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self.seekToPreservedTime { finished in
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guard finished else {
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return
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}
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self.preservedTime = nil
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startPlaying()
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}
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}
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if preservingTime {
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if preservedTime.isNil {
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saveTime {
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replaceItemAndSeek()
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startPlaying()
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}
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} else {
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replaceItemAndSeek()
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startPlaying()
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}
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} else {
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player.replaceCurrentItem(with: playerItem)
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startPlaying()
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}
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}
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private func loadComposition(
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_ stream: Stream,
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of video: Video,
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preservingTime: Bool = false
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) {
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loadedCompositionAssets = []
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loadCompositionAsset(stream.audioAsset, stream: stream, type: .audio, of: video, preservingTime: preservingTime)
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loadCompositionAsset(stream.videoAsset, stream: stream, type: .video, of: video, preservingTime: preservingTime)
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}
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private func loadCompositionAsset(
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_ asset: AVURLAsset,
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stream: Stream,
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type: AVMediaType,
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of video: Video,
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preservingTime: Bool = false
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) {
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asset.loadValuesAsynchronously(forKeys: ["playable"]) { [weak self] in
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guard let self = self else {
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return
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}
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self.logger.info("loading \(type.rawValue) track")
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let assetTracks = asset.tracks(withMediaType: type)
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guard let compositionTrack = self.composition.addMutableTrack(
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withMediaType: type,
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preferredTrackID: kCMPersistentTrackID_Invalid
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) else {
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self.logger.critical("composition \(type.rawValue) addMutableTrack FAILED")
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return
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}
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guard let assetTrack = assetTracks.first else {
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self.logger.critical("asset \(type.rawValue) track FAILED")
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return
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}
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try! compositionTrack.insertTimeRange(
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CMTimeRange(start: .zero, duration: CMTime.secondsInDefaultTimescale(video.length)),
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of: assetTrack,
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at: .zero
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)
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self.logger.critical("\(type.rawValue) LOADED")
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guard self.streamSelection == stream else {
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self.logger.critical("IGNORING LOADED")
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return
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}
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self.loadedCompositionAssets.append(type)
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if self.loadedCompositionAssets.count == 2 {
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self.insertPlayerItem(stream, for: video, preservingTime: preservingTime)
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}
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}
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}
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private func playerItem(_ stream: Stream) -> AVPlayerItem? {
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if let url = stream.singleAssetURL {
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return AVPlayerItem(asset: AVURLAsset(url: url))
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} else {
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return AVPlayerItem(asset: composition)
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}
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}
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private func attachMetadata(to item: AVPlayerItem, video: Video, for _: Stream? = nil) {
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#if !os(macOS)
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var externalMetadata = [
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makeMetadataItem(.commonIdentifierTitle, value: video.title),
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makeMetadataItem(.quickTimeMetadataGenre, value: video.genre ?? ""),
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makeMetadataItem(.commonIdentifierDescription, value: video.description ?? "")
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]
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if let thumbnailData = try? Data(contentsOf: video.thumbnailURL(quality: .medium)!),
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let image = UIImage(data: thumbnailData),
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let pngData = image.pngData()
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{
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let artworkItem = makeMetadataItem(.commonIdentifierArtwork, value: pngData)
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externalMetadata.append(artworkItem)
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}
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item.externalMetadata = externalMetadata
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#endif
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item.preferredForwardBufferDuration = 5
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statusObservation?.invalidate()
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statusObservation = item.observe(\.status, options: [.old, .new]) { [weak self] playerItem, _ in
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guard let self = self else {
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return
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}
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switch playerItem.status {
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case .readyToPlay:
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if self.isAutoplaying(playerItem) {
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self.play()
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}
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case .failed:
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self.playerError = item.error
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default:
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return
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}
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}
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}
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#if !os(macOS)
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private func makeMetadataItem(_ identifier: AVMetadataIdentifier, value: Any) -> AVMetadataItem {
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let item = AVMutableMetadataItem()
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item.identifier = identifier
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item.value = value as? NSCopying & NSObjectProtocol
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item.extendedLanguageTag = "und"
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return item.copy() as! AVMetadataItem
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}
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#endif
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private func addItemDidPlayToEndTimeObserver() {
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(itemDidPlayToEndTime),
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name: NSNotification.Name.AVPlayerItemDidPlayToEndTime,
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object: nil
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)
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}
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@objc func itemDidPlayToEndTime() {
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currentItem.playbackTime = playerItemDuration
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if queue.isEmpty {
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#if !os(macOS)
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try? AVAudioSession.sharedInstance().setActive(false)
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#endif
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addCurrentItemToHistory()
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resetQueue()
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#if os(tvOS)
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avPlayerViewController!.dismiss(animated: true) { [weak self] in
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self?.controller!.dismiss(animated: true)
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}
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#endif
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presentingPlayer = false
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} else {
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advanceToNextItem()
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}
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}
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private func saveTime(completionHandler: @escaping () -> Void = {}) {
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let currentTime = player.currentTime()
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guard currentTime.seconds > 0 else {
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return
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}
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DispatchQueue.main.async { [weak self] in
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self?.preservedTime = currentTime
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completionHandler()
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}
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}
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private func seekToPreservedTime(completionHandler: @escaping (Bool) -> Void = { _ in }) {
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guard let time = preservedTime else {
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return
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}
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player.seek(
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to: time,
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toleranceBefore: .secondsInDefaultTimescale(1),
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toleranceAfter: .zero,
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completionHandler: completionHandler
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)
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}
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private func addFrequentTimeObserver() {
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let interval = CMTime.secondsInDefaultTimescale(0.5)
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frequentTimeObserver = player.addPeriodicTimeObserver(
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forInterval: interval,
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queue: .main
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) { [weak self] _ in
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guard let self = self else {
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return
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}
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guard !self.currentItem.isNil else {
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return
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}
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#if !os(tvOS)
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self.updateNowPlayingInfo()
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#endif
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self.handleSegments(at: self.player.currentTime())
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}
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}
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private func addInfrequentTimeObserver() {
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let interval = CMTime.secondsInDefaultTimescale(5)
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infrequentTimeObserver = player.addPeriodicTimeObserver(
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forInterval: interval,
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queue: .main
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) { [weak self] _ in
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guard let self = self else {
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return
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}
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guard !self.currentItem.isNil else {
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return
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}
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self.timeObserverThrottle.execute {
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self.updateCurrentItemIntervals()
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}
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}
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}
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private func addPlayerTimeControlStatusObserver() {
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playerTimeControlStatusObserver = player.observe(\.timeControlStatus) { [weak self] player, _ in
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guard let self = self,
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self.player == player
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else {
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return
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}
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if player.timeControlStatus != .waitingToPlayAtSpecifiedRate {
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self.objectWillChange.send()
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}
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if player.timeControlStatus == .playing, player.rate != self.currentRate {
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player.rate = self.currentRate
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}
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#if os(macOS)
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if player.timeControlStatus == .playing {
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ScreenSaverManager.shared.disable(reason: "Yattee is playing video")
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} else {
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ScreenSaverManager.shared.enable()
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}
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#endif
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self.timeObserverThrottle.execute {
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self.updateCurrentItemIntervals()
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}
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}
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}
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private func updateCurrentItemIntervals() {
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currentItem?.playbackTime = player.currentTime()
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currentItem?.videoDuration = player.currentItem?.asset.duration.seconds
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}
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fileprivate func updateNowPlayingInfo() {
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var duration: Int?
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if !currentItem.video.live {
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let itemDuration = currentItem.videoDuration ?? 0
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duration = itemDuration.isFinite ? Int(itemDuration) : nil
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}
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var nowPlayingInfo: [String: AnyObject] = [
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MPMediaItemPropertyTitle: currentItem.video.title as AnyObject,
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MPMediaItemPropertyArtist: currentItem.video.author as AnyObject,
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MPMediaItemPropertyPlaybackDuration: duration as AnyObject,
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MPNowPlayingInfoPropertyIsLiveStream: currentItem.video.live as AnyObject,
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MPNowPlayingInfoPropertyElapsedPlaybackTime: player.currentTime().seconds as AnyObject,
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MPNowPlayingInfoPropertyPlaybackQueueCount: queue.count as AnyObject,
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MPMediaItemPropertyMediaType: MPMediaType.anyVideo.rawValue as AnyObject
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]
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if !currentArtwork.isNil {
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nowPlayingInfo[MPMediaItemPropertyArtwork] = currentArtwork as AnyObject
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}
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MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo
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}
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private func updateCurrentArtwork() {
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guard let thumbnailData = try? Data(contentsOf: currentItem.video.thumbnailURL(quality: .medium)!) else {
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return
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}
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#if os(macOS)
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let image = NSImage(data: thumbnailData)
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#else
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let image = UIImage(data: thumbnailData)
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#endif
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if image.isNil {
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return
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}
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currentArtwork = MPMediaItemArtwork(boundsSize: image!.size) { _ in image! }
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}
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func loadCurrentItemChannelDetails() {
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guard let video = currentVideo,
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!video.channel.detailsLoaded
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else {
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return
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}
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if restoreLoadedChannel() {
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return
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}
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accounts.api.channel(video.channel.id).load().onSuccess { [weak self] response in
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if let channel: Channel = response.typedContent() {
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self?.channelWithDetails = channel
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withAnimation {
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self?.currentItem.video.channel = channel
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}
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}
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}
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}
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@discardableResult func restoreLoadedChannel() -> Bool {
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if !currentVideo.isNil, channelWithDetails?.id == currentVideo!.channel.id {
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currentItem.video.channel = channelWithDetails!
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return true
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}
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return false
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}
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func rateLabel(_ rate: Float) -> String {
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let formatter = NumberFormatter()
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formatter.minimumFractionDigits = 0
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formatter.maximumFractionDigits = 2
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return "\(formatter.string(from: NSNumber(value: rate))!)×"
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}
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func closeCurrentItem() {
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addCurrentItemToHistory()
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currentItem = nil
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player.replaceCurrentItem(with: nil)
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}
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}
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