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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 = { _ in return .commandFailed }) {
self.key = key
self.type = type
self.handler = handler
}
}
}
class RemoteCommandCenter: EventSubscriber {
unowned let appHub: AppHub
var event: EventHelper? { return appHub.event }
var input: InputHelper { 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 { return MPNowPlayingInfoCenter.default() }
var commandCenter: MPRemoteCommandCenter { 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
}
}
}
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