89 lines
2.5 KiB
Swift
89 lines
2.5 KiB
Swift
import Domain
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import Foundation
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public struct QueueItem: Identifiable, Hashable, Codable, Sendable {
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public let id: UUID
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public let track: Track
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public init(id: UUID = UUID(), track: Track) {
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self.id = id
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self.track = track
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}
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}
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public enum RepeatMode: String, Codable, Sendable, CaseIterable {
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case off, all, one
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}
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public enum PlaybackCommand: Codable, Sendable {
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case play
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case pause
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case togglePlayPause
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case seek(to: TimeInterval)
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case next
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case previous
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case setQueue(tracks: [Track], startIndex: Int, shuffled: Bool)
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case insertNext([Track])
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case insertLast([Track])
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case jump(to: QueueItem.ID)
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case move(item: QueueItem.ID, after: QueueItem.ID?)
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case remove(QueueItem.ID)
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case clearUpcoming
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case setShuffle(Bool)
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case setRepeat(RepeatMode)
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}
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public struct PlaybackAnchor: Hashable, Sendable {
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public var position: TimeInterval
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public var instant: ContinuousClock.Instant
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public var rate: Double
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public init(position: TimeInterval, instant: ContinuousClock.Instant, rate: Double) {
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self.position = position
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self.instant = instant
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self.rate = rate
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}
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public func position(at now: ContinuousClock.Instant) -> TimeInterval {
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let elapsed = now - instant
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let seconds = Double(elapsed.components.seconds) + Double(elapsed.components.attoseconds) / 1e18
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return position + seconds * rate
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}
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}
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public enum PlaybackStatus: String, Sendable {
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case stopped, paused, playing
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}
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public struct PlaybackState: Hashable, Sendable {
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public var history: [QueueItem] = []
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public var current: QueueItem?
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public var upcoming: [QueueItem] = []
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public var status: PlaybackStatus = .stopped
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public var anchor = PlaybackAnchor(position: 0, instant: .now, rate: 0)
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public var isShuffled = false
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public var repeatMode: RepeatMode = .off
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public init() {}
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}
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public enum OutputEvent: Sendable {
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case finished(QueueItem.ID)
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case failed(QueueItem.ID)
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case anchor(QueueItem.ID, position: TimeInterval, rate: Double)
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}
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public protocol OutputEngine: Sendable {
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var events: AsyncStream<OutputEvent> { get }
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func load(_ item: QueueItem, at position: TimeInterval) async
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func prepare(_ item: QueueItem?) async
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func play() async
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func pause() async
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func seek(to position: TimeInterval) async
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func stop() async
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}
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public extension OutputEngine {
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func prepare(_: QueueItem?) async {}
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}
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