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diff --git a/osdep/mac/remote_command_center.swift b/osdep/mac/remote_command_center.swift
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+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import Cocoa
+import MediaPlayer
+
+extension RemoteCommandCenter {
+ typealias ConfigHandler = (MPRemoteCommandEvent) -> (MPRemoteCommandHandlerStatus)
+
+ enum KeyType {
+ case normal
+ case repeatable
+ }
+
+ struct Config {
+ let key: Int32
+ let type: KeyType
+ var state: NSEvent.EventType = .applicationDefined
+ let handler: ConfigHandler
+
+ init(key: Int32 = 0, type: KeyType = .normal, handler: @escaping ConfigHandler = { event in return .commandFailed }) {
+ self.key = key
+ self.type = type
+ self.handler = handler
+ }
+ }
+}
+
+class RemoteCommandCenter: EventSubscriber {
+ unowned let appHub: AppHub
+ var event: EventHelper? { get { return appHub.event } }
+ var input: InputHelper { get { return appHub.input } }
+ var configs: [MPRemoteCommand:Config] = [:]
+ var disabledCommands: [MPRemoteCommand] = []
+ var isPaused: Bool = false { didSet { updateInfoCenter() } }
+ var duration: Double = 0 { didSet { updateInfoCenter() } }
+ var position: Double = 0 { didSet { updateInfoCenter() } }
+ var rate: Double = 1 { didSet { updateInfoCenter() } }
+ var title: String = "" { didSet { updateInfoCenter() } }
+ var chapter: String? { didSet { updateInfoCenter() } }
+ var album: String? { didSet { updateInfoCenter() } }
+ var artist: String? { didSet { updateInfoCenter() } }
+ var cover: NSImage
+
+ var infoCenter: MPNowPlayingInfoCenter { get { return MPNowPlayingInfoCenter.default() } }
+ var commandCenter: MPRemoteCommandCenter { get { return MPRemoteCommandCenter.shared() } }
+
+ init(_ appHub: AppHub) {
+ self.appHub = appHub
+ cover = appHub.getIcon()
+
+ configs = [
+ commandCenter.pauseCommand: Config(key: MP_KEY_PAUSEONLY, handler: keyHandler),
+ commandCenter.playCommand: Config(key: MP_KEY_PLAYONLY, handler: keyHandler),
+ commandCenter.stopCommand: Config(key: MP_KEY_STOP, handler: keyHandler),
+ commandCenter.nextTrackCommand: Config(key: MP_KEY_NEXT, handler: keyHandler),
+ commandCenter.previousTrackCommand: Config(key: MP_KEY_PREV, handler: keyHandler),
+ commandCenter.togglePlayPauseCommand: Config(key: MP_KEY_PLAY, handler: keyHandler),
+ commandCenter.seekForwardCommand: Config(key: MP_KEY_FORWARD, type: .repeatable, handler: keyHandler),
+ commandCenter.seekBackwardCommand: Config(key: MP_KEY_REWIND, type: .repeatable, handler: keyHandler),
+ commandCenter.changePlaybackPositionCommand: Config(handler: seekHandler),
+ ]
+
+ disabledCommands = [
+ commandCenter.changePlaybackRateCommand,
+ commandCenter.changeRepeatModeCommand,
+ commandCenter.changeShuffleModeCommand,
+ commandCenter.skipForwardCommand,
+ commandCenter.skipBackwardCommand,
+ commandCenter.enableLanguageOptionCommand,
+ commandCenter.disableLanguageOptionCommand,
+ commandCenter.ratingCommand,
+ commandCenter.likeCommand,
+ commandCenter.dislikeCommand,
+ commandCenter.bookmarkCommand,
+ ]
+
+ for cmd in disabledCommands {
+ cmd.isEnabled = false
+ }
+ }
+
+ func registerEvents() {
+ event?.subscribe(self, event: .init(name: "duration", format: MPV_FORMAT_DOUBLE))
+ event?.subscribe(self, event: .init(name: "time-pos", format: MPV_FORMAT_DOUBLE))
+ event?.subscribe(self, event: .init(name: "speed", format: MPV_FORMAT_DOUBLE))
+ event?.subscribe(self, event: .init(name: "pause", format: MPV_FORMAT_FLAG))
+ event?.subscribe(self, event: .init(name: "media-title", format: MPV_FORMAT_STRING))
+ event?.subscribe(self, event: .init(name: "chapter-metadata/title", format: MPV_FORMAT_STRING))
+ event?.subscribe(self, event: .init(name: "metadata/by-key/album", format: MPV_FORMAT_STRING))
+ event?.subscribe(self, event: .init(name: "metadata/by-key/artist", format: MPV_FORMAT_STRING))
+ }
+
+ func start() {
+ for (cmd, config) in configs {
+ cmd.isEnabled = true
+ cmd.addTarget(handler: config.handler)
+ }
+
+ updateInfoCenter()
+
+ NotificationCenter.default.addObserver(
+ self,
+ selector: #selector(self.makeCurrent),
+ name: NSApplication.willBecomeActiveNotification,
+ object: nil
+ )
+ }
+
+ func stop() {
+ for (cmd, _) in configs {
+ cmd.isEnabled = false
+ cmd.removeTarget(nil)
+ }
+
+ infoCenter.nowPlayingInfo = nil
+ infoCenter.playbackState = .unknown
+
+ NotificationCenter.default.removeObserver(
+ self,
+ name: NSApplication.willBecomeActiveNotification,
+ object: nil
+ )
+ }
+
+ @objc func makeCurrent(notification: NSNotification) {
+ infoCenter.playbackState = .paused
+ infoCenter.playbackState = .playing
+ updateInfoCenter()
+ }
+
+ func updateInfoCenter() {
+ infoCenter.playbackState = isPaused ? .paused : .playing
+ infoCenter.nowPlayingInfo = (infoCenter.nowPlayingInfo ?? [:]).merging([
+ MPNowPlayingInfoPropertyMediaType: NSNumber(value: MPNowPlayingInfoMediaType.video.rawValue),
+ MPNowPlayingInfoPropertyPlaybackProgress: NSNumber(value: 0.0),
+ MPNowPlayingInfoPropertyPlaybackRate: NSNumber(value: isPaused ? 0 : rate),
+ MPNowPlayingInfoPropertyElapsedPlaybackTime: NSNumber(value: position),
+ MPMediaItemPropertyPlaybackDuration: NSNumber(value: duration),
+ MPMediaItemPropertyTitle: title,
+ MPMediaItemPropertyArtist: artist ?? chapter ?? "",
+ MPMediaItemPropertyAlbumTitle: album ?? "",
+ MPMediaItemPropertyArtwork: MPMediaItemArtwork(boundsSize: cover.size) { _ in return self.cover }
+ ]) { (_, new) in new }
+ }
+
+ lazy var keyHandler: ConfigHandler = { event in
+ guard let config = self.configs[event.command] else {
+ return .commandFailed
+ }
+
+ var state = config.state
+ if config.type == .repeatable {
+ state = config.state == .keyDown ? .keyUp : .keyDown
+ self.configs[event.command]?.state = state
+ }
+ self.input.put(key: config.key, type: state)
+
+ return .success
+ }
+
+ lazy var seekHandler: ConfigHandler = { event in
+ guard let posEvent = event as? MPChangePlaybackPositionCommandEvent else {
+ return .commandFailed
+ }
+
+ let cmd = String(format: "seek %.02f absolute", posEvent.positionTime)
+ return self.input.command(cmd) ? .success : .commandFailed
+ }
+
+ func handle(event: EventHelper.Event) {
+ switch event.name {
+ case "time-pos":
+ let newPosition = max(event.double ?? 0, 0)
+ if Int((floor(newPosition) - floor(position)) / rate) != 0 {
+ position = newPosition
+ }
+ case "pause": isPaused = event.bool ?? false
+ case "duration": duration = event.double ?? 0
+ case "speed": rate = event.double ?? 1
+ case "media-title": title = event.string ?? ""
+ case "chapter-metadata/title": chapter = event.string
+ case "metadata/by-key/album": album = event.string
+ case "metadata/by-key/artist": artist = event.string
+ default: break
+ }
+ }
+}