706 lines
20 KiB
Swift
706 lines
20 KiB
Swift
import AVFoundation
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import Foundation
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import Libmpv
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import QuartzCore
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#if os(iOS) || os(tvOS)
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import UIKit
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#elseif os(macOS)
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import Cocoa
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#endif
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protocol MpvPlayerDelegate: AnyObject {
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func onPropertyChange(name: String, value: Any?)
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func onEvent(name: String, data: [String: Any]?)
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}
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class MpvVideoLayer: AVSampleBufferDisplayLayer {}
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/// Safely convert a C string to Swift String with UTF-8 validation.
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/// Falls back to Latin-1 decoding if the bytes are not valid UTF-8.
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/// mpv does not guarantee UTF-8 for log messages, error strings, or
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/// system-encoded paths and Flutter codecs reject invalid UTF-8.
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func safeString(_ cstr: UnsafePointer<CChar>) -> String {
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if let string = String(validatingUTF8: cstr) {
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return string
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}
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let length = strlen(cstr)
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let buffer = UnsafeBufferPointer(
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start: UnsafeRawPointer(cstr).assumingMemoryBound(to: UInt8.self),
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count: length
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)
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return String(buffer.map { Character(Unicode.Scalar($0)) })
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}
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class MpvPlayerCoreBase: NSObject {
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weak var delegate: MpvPlayerDelegate?
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var videoLayer: MpvVideoLayer?
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var mpv: OpaquePointer?
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var isInitialized = false
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var isDisposing = false
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var isPipActive = false
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var isBackgrounded = false
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private var cachedHDREnabled = true
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private var cachedLastSigPeak = 0.0
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var hdrEnabled: Bool {
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cacheLock.lock()
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defer { cacheLock.unlock() }
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return cachedHDREnabled
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}
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var lastSigPeak: Double {
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cacheLock.lock()
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defer { cacheLock.unlock() }
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return cachedLastSigPeak
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}
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/// Properties that must still flow to Dart while backgrounded (state-critical).
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private static let criticalProperties: Set<String> = [
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"pause", "eof-reached", "paused-for-cache",
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]
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private static let internalSigPeakObserverId: UInt64 = UInt64.max - 1
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private static let internalWidthObserverId: UInt64 = UInt64.max - 2
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private static let internalHeightObserverId: UInt64 = UInt64.max - 3
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private static let internalObserverIds: Set<UInt64> = [
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internalSigPeakObserverId,
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internalWidthObserverId,
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internalHeightObserverId,
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]
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let queue = DispatchQueue(label: "mpv", qos: .userInitiated)
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private let queueKey = DispatchSpecificKey<Void>()
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private enum PendingRequest {
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case void((Result<Void, Error>) -> Void)
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case getProperty((Result<String?, Error>) -> Void)
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}
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private var pendingRequests: [UInt64: PendingRequest] = [:]
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private let pendingRequestsLock = NSLock()
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private var nextRequestId: UInt64 = 1
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private let cacheLock = NSLock()
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private var cachedPaused = true
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private var cachedDuration = 0.0
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private var cachedTimePos = 0.0
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private var cachedWidth = 0.0
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private var cachedHeight = 0.0
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private var currentPanscan = 0.0
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private var aspectOverrideActive = false
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override init() {
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super.init()
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queue.setSpecific(key: queueKey, value: ())
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}
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func configurePlatformMpvOptions() {}
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func updateEDRMode(sigPeak: Double) {}
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func setupMpv() -> Bool {
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guard let videoLayer else { return false }
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mpv = mpv_create()
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guard let mpv else {
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print("[MpvPlayerCore] Failed to create MPV context")
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return false
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}
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#if DEBUG
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checkError(mpv_request_log_messages(mpv, "info"))
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#else
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checkError(mpv_request_log_messages(mpv, "warn"))
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#endif
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var layer = Int64(Int(bitPattern: Unmanaged.passUnretained(videoLayer).toOpaque()))
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checkError(mpv_set_option(mpv, "wid", MPV_FORMAT_INT64, &layer))
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applySharedMpvOptions()
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configurePlatformMpvOptions()
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let initResult = mpv_initialize(mpv)
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if initResult < 0 {
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print("[MpvPlayerCore] mpv_initialize failed: \(safeString(mpv_error_string(initResult)))")
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mpv_terminate_destroy(mpv)
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self.mpv = nil
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return false
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}
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mpv_set_wakeup_callback(
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mpv,
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{ context in
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guard let context else { return }
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let core = Unmanaged<MpvPlayerCoreBase>.fromOpaque(context).takeUnretainedValue()
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core.readEvents()
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},
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UnsafeMutableRawPointer(Unmanaged.passUnretained(self).toOpaque())
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)
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mpv_observe_property(mpv, Self.internalSigPeakObserverId, "video-params/sig-peak", MPV_FORMAT_DOUBLE)
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mpv_observe_property(mpv, Self.internalWidthObserverId, "width", MPV_FORMAT_DOUBLE)
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mpv_observe_property(mpv, Self.internalHeightObserverId, "height", MPV_FORMAT_DOUBLE)
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return true
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}
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func setLogLevel(_ level: String) {
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guard let mpv else { return }
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mpv_request_log_messages(mpv, level)
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}
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func setProperty(_ name: String, value: String) {
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setPropertyAsync(name, value: value) { _ in }
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}
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func setPropertyAsync(
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_ name: String,
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value: String,
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completion: @escaping (Result<Void, Error>) -> Void
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) {
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#if targetEnvironment(simulator)
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if name == "hwdec" {
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if value != "no" {
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print("[MpvPlayerCore] Simulator does not support hardware decoding; forcing hwdec=no")
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}
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setRawStringPropertyAsync(name, value: "no", completion: completion)
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return
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}
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#endif
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if isAvFoundationManagedProperty(name) {
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print("[MpvPlayerCore] Ignoring managed AVFoundation property: \(name)=\(value)")
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completion(.success(()))
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return
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}
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updateVideoGravityIfNeeded(name: name, value: value)
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if name == "pause" {
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setCachedPaused(value == "yes" || value == "true" || value == "1")
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}
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if name == "hdr-enabled" {
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let enabled = value == "yes" || value == "true" || value == "1"
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setHDREnabled(enabled, completion: completion)
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return
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}
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setRawStringPropertyAsync(name, value: value, completion: completion)
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}
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func setInt64PropertyAsync(
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_ name: String,
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value: Int64,
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completion: @escaping (Result<Void, Error>) -> Void
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) {
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guard let mpv else {
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completion(.success(()))
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return
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}
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let requestId = registerRequest(.void(completion))
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var propertyValue = value
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let status = name.withCString { namePointer in
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mpv_set_property_async(mpv, requestId, namePointer, MPV_FORMAT_INT64, &propertyValue)
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}
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completeRequestIfSubmissionFailed(requestId: requestId, status: status)
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}
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func setHDREnabled(_ enabled: Bool, completion: ((Result<Void, Error>) -> Void)? = nil) {
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cacheLock.lock()
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cachedHDREnabled = enabled
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let sigPeak = cachedLastSigPeak
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cacheLock.unlock()
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print("[MpvPlayerCore] HDR enabled: \(enabled)")
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setRawStringPropertyAsync(
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"target-colorspace-hint",
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value: enabled ? "yes" : "no",
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completion: completion ?? { _ in }
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)
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DispatchQueue.main.async {
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self.updateEDRMode(sigPeak: sigPeak)
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}
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}
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func getPropertyAsync(_ name: String, completion: @escaping (Result<String?, Error>) -> Void) {
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guard let mpv else {
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completion(.success(nil))
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return
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}
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let requestId = registerRequest(.getProperty(completion))
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let status = name.withCString { namePointer in
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mpv_get_property_async(mpv, requestId, namePointer, MPV_FORMAT_STRING)
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}
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completeRequestIfSubmissionFailed(requestId: requestId, status: status)
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}
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func observeProperty(_ name: String, format: String) {
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guard mpv != nil else { return }
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let mpvFormat: mpv_format
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switch format {
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case "double":
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mpvFormat = MPV_FORMAT_DOUBLE
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case "flag":
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mpvFormat = MPV_FORMAT_FLAG
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case "node":
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mpvFormat = MPV_FORMAT_NODE
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case "string":
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mpvFormat = MPV_FORMAT_STRING
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default:
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return
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}
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mpv_observe_property(mpv, 0, name, mpvFormat)
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}
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func command(_ args: [String]) {
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commandAsync(args) { _ in }
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}
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func commandAsync(_ args: [String], completion: @escaping (Result<Void, Error>) -> Void) {
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guard let mpv, !args.isEmpty else {
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completion(.success(()))
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return
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}
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let requestId = registerRequest(.void(completion))
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var cargs: [UnsafeMutablePointer<CChar>?] = args.map { strdup($0) }
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cargs.append(nil)
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cargs.withUnsafeBufferPointer { buffer in
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var constPointers = buffer.map { UnsafePointer($0) }
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let result = mpv_command_async(mpv, requestId, &constPointers)
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completeRequestIfSubmissionFailed(requestId: requestId, status: result)
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}
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for pointer in cargs {
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free(pointer)
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}
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}
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private func setRawStringPropertyAsync(
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_ name: String,
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value: String,
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completion: @escaping (Result<Void, Error>) -> Void
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) {
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guard let mpv else {
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completion(.success(()))
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return
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}
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let requestId = registerRequest(.void(completion))
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let status = name.withCString { namePointer in
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value.withCString { valuePointer in
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var propertyValue: UnsafePointer<CChar>? = valuePointer
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return mpv_set_property_async(mpv, requestId, namePointer, MPV_FORMAT_STRING, &propertyValue)
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}
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}
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completeRequestIfSubmissionFailed(requestId: requestId, status: status)
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}
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var isPaused: Bool {
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cacheLock.lock()
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defer { cacheLock.unlock() }
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return cachedPaused
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}
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var duration: Double {
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cacheLock.lock()
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defer { cacheLock.unlock() }
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return cachedDuration
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}
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var timePos: Double {
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cacheLock.lock()
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defer { cacheLock.unlock() }
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return cachedTimePos
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}
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var videoSize: CGSize? {
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cacheLock.lock()
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defer { cacheLock.unlock() }
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guard cachedWidth > 0, cachedHeight > 0 else { return nil }
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return CGSize(width: cachedWidth, height: cachedHeight)
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}
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func disposeSharedState(destroySynchronously: Bool) {
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isDisposing = true
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cancelPendingRequests()
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let mpvHandle = mpv
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mpv = nil
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let destroy = {
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if let mpvHandle {
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mpv_set_wakeup_callback(mpvHandle, nil, nil)
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mpv_terminate_destroy(mpvHandle)
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}
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}
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if destroySynchronously {
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if DispatchQueue.getSpecific(key: queueKey) != nil {
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destroy()
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} else {
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queue.sync(execute: destroy)
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}
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} else {
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queue.async(execute: destroy)
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}
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}
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private func applySharedMpvOptions() {
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guard let mpv else { return }
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checkError(mpv_set_option_string(mpv, "vo", "avfoundation"))
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#if targetEnvironment(simulator)
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checkError(mpv_set_option_string(mpv, "avfoundation-composite-osd", "no"))
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checkError(mpv_set_option_string(mpv, "hwdec", "no"))
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#else
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checkError(mpv_set_option_string(mpv, "avfoundation-composite-osd", "yes"))
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checkError(mpv_set_option_string(mpv, "hwdec", "videotoolbox"))
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#endif
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checkError(mpv_set_option_string(mpv, "hwdec-codecs", "all"))
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checkError(mpv_set_option_string(mpv, "hwdec-software-fallback", "yes"))
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checkError(mpv_set_option_string(mpv, "target-colorspace-hint", "yes"))
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}
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private func isAvFoundationManagedProperty(_ name: String) -> Bool {
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name == "vo" || name == "wid" || name == "gpu-api" || name == "gpu-context"
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}
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private func updateVideoGravityIfNeeded(name: String, value: String) {
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let gravity: AVLayerVideoGravity
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cacheLock.lock()
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switch name {
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case "panscan":
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currentPanscan = Double(value) ?? 0
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case "video-aspect-override":
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aspectOverrideActive = value != "no" && value != "-1" && value != "0"
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default:
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cacheLock.unlock()
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return
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}
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if aspectOverrideActive {
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gravity = .resize
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} else if currentPanscan > 0 {
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gravity = .resizeAspectFill
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} else {
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gravity = .resizeAspect
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}
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cacheLock.unlock()
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DispatchQueue.main.async { [weak self] in
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self?.videoLayer?.videoGravity = gravity
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}
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}
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private func cancelPendingRequests() {
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pendingRequestsLock.lock()
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let pending = pendingRequests
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pendingRequests.removeAll()
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pendingRequestsLock.unlock()
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let error = NSError(
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domain: "mpv",
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code: -1,
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userInfo: [NSLocalizedDescriptionKey: "Player disposed"]
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)
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for (_, request) in pending {
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DispatchQueue.main.async {
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switch request {
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case .void(let completion):
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completion(.failure(error))
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case .getProperty(let completion):
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completion(.failure(error))
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}
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}
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}
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}
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private func registerRequest(_ request: PendingRequest) -> UInt64 {
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pendingRequestsLock.lock()
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defer { pendingRequestsLock.unlock() }
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let requestId = nextRequestId
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nextRequestId += 1
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pendingRequests[requestId] = request
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return requestId
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}
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private func takeRequest(_ requestId: UInt64) -> PendingRequest? {
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pendingRequestsLock.lock()
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defer { pendingRequestsLock.unlock() }
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return pendingRequests.removeValue(forKey: requestId)
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}
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private func mpvError(_ status: CInt) -> NSError {
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NSError(
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domain: "mpv",
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code: Int(status),
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userInfo: [NSLocalizedDescriptionKey: safeString(mpv_error_string(status))]
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)
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}
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private func completeRequestIfSubmissionFailed(requestId: UInt64, status: CInt) {
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guard status < 0, let request = takeRequest(requestId) else { return }
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let error = mpvError(status)
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DispatchQueue.main.async {
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switch request {
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case .void(let completion):
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completion(.failure(error))
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case .getProperty(let completion):
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completion(.failure(error))
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}
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}
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}
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private func completeVoidRequest(requestId: UInt64, error status: CInt) {
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guard let request = takeRequest(requestId) else { return }
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DispatchQueue.main.async {
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switch request {
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case .void(let completion):
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if status < 0 {
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completion(.failure(self.mpvError(status)))
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} else {
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completion(.success(()))
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}
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case .getProperty:
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break
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}
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}
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}
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private func completeGetPropertyRequest(_ event: mpv_event) {
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guard let request = takeRequest(event.reply_userdata) else { return }
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guard case .getProperty(let completion) = request else { return }
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var value: String?
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if event.error >= 0,
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let propertyPointer = event.data?.assumingMemoryBound(to: mpv_event_property.self)
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{
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let property = propertyPointer.pointee
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if property.format == MPV_FORMAT_STRING, let data = property.data {
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let cstring = data.assumingMemoryBound(to: UnsafePointer<CChar>?.self).pointee
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value = cstring.map { safeString($0) }
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}
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}
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DispatchQueue.main.async {
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completion(.success(value))
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}
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}
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private func readEvents() {
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queue.async { [weak self] in
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guard let self, !self.isDisposing, let mpv = self.mpv else { return }
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while true {
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let event = mpv_wait_event(mpv, 0)
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guard let event else { break }
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if event.pointee.event_id == MPV_EVENT_NONE {
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break
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}
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self.handleEvent(event.pointee)
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}
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}
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}
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private func handleEvent(_ event: mpv_event) {
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switch event.event_id {
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case MPV_EVENT_PROPERTY_CHANGE:
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guard let data = event.data else { break }
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let property = data.assumingMemoryBound(to: mpv_event_property.self).pointee
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let name = safeString(property.name)
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handlePropertyChange(name: name, property: property, replyUserdata: event.reply_userdata)
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case MPV_EVENT_COMMAND_REPLY:
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completeVoidRequest(requestId: event.reply_userdata, error: event.error)
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case MPV_EVENT_SET_PROPERTY_REPLY:
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completeVoidRequest(requestId: event.reply_userdata, error: event.error)
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case MPV_EVENT_GET_PROPERTY_REPLY:
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completeGetPropertyRequest(event)
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case MPV_EVENT_FILE_LOADED:
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DispatchQueue.main.async {
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self.delegate?.onEvent(name: "file-loaded", data: nil)
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}
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case MPV_EVENT_END_FILE:
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if let endFilePtr = event.data?.assumingMemoryBound(to: mpv_event_end_file.self) {
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let endFile = endFilePtr.pointee
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var data: [String: Any] = ["reason": Int(endFile.reason.rawValue)]
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if endFile.reason == MPV_END_FILE_REASON_ERROR {
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data["error"] = Int(endFile.error)
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|
data["message"] = safeString(mpv_error_string(endFile.error))
|
|
}
|
|
DispatchQueue.main.async {
|
|
self.delegate?.onEvent(name: "end-file", data: data)
|
|
}
|
|
} else {
|
|
DispatchQueue.main.async {
|
|
self.delegate?.onEvent(name: "end-file", data: nil)
|
|
}
|
|
}
|
|
|
|
case MPV_EVENT_SHUTDOWN:
|
|
print("[MpvPlayerCore] MPV shutdown event")
|
|
|
|
case MPV_EVENT_PLAYBACK_RESTART:
|
|
DispatchQueue.main.async {
|
|
self.delegate?.onEvent(name: "playback-restart", data: nil)
|
|
}
|
|
|
|
case MPV_EVENT_LOG_MESSAGE:
|
|
if isBackgrounded { break }
|
|
if let messagePointer = event.data?.assumingMemoryBound(to: mpv_event_log_message.self) {
|
|
let message = messagePointer.pointee
|
|
let prefix = message.prefix.map { safeString($0) } ?? ""
|
|
let level = message.level.map { safeString($0) } ?? ""
|
|
let text = message.text.map { safeString($0) } ?? ""
|
|
|
|
DispatchQueue.main.async {
|
|
self.delegate?.onEvent(
|
|
name: "log-message",
|
|
data: ["prefix": prefix, "level": level, "text": text]
|
|
)
|
|
}
|
|
}
|
|
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
private func handlePropertyChange(name: String, property: mpv_event_property, replyUserdata: UInt64) {
|
|
var value: Any?
|
|
|
|
switch property.format {
|
|
case MPV_FORMAT_DOUBLE:
|
|
if let data = property.data {
|
|
value = data.assumingMemoryBound(to: Double.self).pointee
|
|
}
|
|
|
|
case MPV_FORMAT_FLAG:
|
|
if let data = property.data {
|
|
value = data.assumingMemoryBound(to: Int32.self).pointee != 0
|
|
}
|
|
|
|
case MPV_FORMAT_NODE:
|
|
if let data = property.data {
|
|
let node = data.assumingMemoryBound(to: mpv_node.self).pointee
|
|
value = convertNode(node)
|
|
}
|
|
|
|
case MPV_FORMAT_STRING:
|
|
if let data = property.data {
|
|
let cstring = data.assumingMemoryBound(to: UnsafePointer<CChar>?.self).pointee
|
|
value = cstring.map { safeString($0) }
|
|
}
|
|
|
|
default:
|
|
break
|
|
}
|
|
|
|
updateCachedProperty(name: name, value: value)
|
|
|
|
if name == "video-params/sig-peak", let sigPeak = value as? Double {
|
|
cacheLock.lock()
|
|
cachedLastSigPeak = sigPeak
|
|
cacheLock.unlock()
|
|
DispatchQueue.main.async {
|
|
self.updateEDRMode(sigPeak: sigPeak)
|
|
}
|
|
}
|
|
|
|
if Self.internalObserverIds.contains(replyUserdata) { return }
|
|
if isBackgrounded && !Self.criticalProperties.contains(name) { return }
|
|
|
|
DispatchQueue.main.async {
|
|
self.delegate?.onPropertyChange(name: name, value: value)
|
|
}
|
|
}
|
|
|
|
private func updateCachedProperty(name: String, value: Any?) {
|
|
cacheLock.lock()
|
|
defer { cacheLock.unlock() }
|
|
|
|
switch name {
|
|
case "pause":
|
|
if let paused = value as? Bool { cachedPaused = paused }
|
|
case "duration":
|
|
if let duration = value as? Double { cachedDuration = duration }
|
|
case "time-pos":
|
|
if let timePos = value as? Double { cachedTimePos = timePos }
|
|
case "width":
|
|
if let width = value as? Double { cachedWidth = width }
|
|
case "height":
|
|
if let height = value as? Double { cachedHeight = height }
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
private func setCachedPaused(_ paused: Bool) {
|
|
cacheLock.lock()
|
|
cachedPaused = paused
|
|
cacheLock.unlock()
|
|
}
|
|
|
|
private func convertNode(_ node: mpv_node) -> Any? {
|
|
switch node.format {
|
|
case MPV_FORMAT_STRING:
|
|
return node.u.string.map { safeString($0) }
|
|
|
|
case MPV_FORMAT_FLAG:
|
|
return node.u.flag != 0
|
|
|
|
case MPV_FORMAT_INT64:
|
|
return node.u.int64
|
|
|
|
case MPV_FORMAT_DOUBLE:
|
|
return node.u.double_
|
|
|
|
case MPV_FORMAT_NODE_ARRAY:
|
|
guard let list = node.u.list?.pointee else { return nil }
|
|
var array = [Any]()
|
|
for index in 0..<Int(list.num) {
|
|
if let item = convertNode(list.values[index]) {
|
|
array.append(item)
|
|
}
|
|
}
|
|
return array
|
|
|
|
case MPV_FORMAT_NODE_MAP:
|
|
guard let list = node.u.list?.pointee else { return nil }
|
|
var dictionary = [String: Any]()
|
|
for index in 0..<Int(list.num) {
|
|
if let key = list.keys?[index].map({ safeString($0) }),
|
|
let value = convertNode(list.values[index])
|
|
{
|
|
dictionary[key] = value
|
|
}
|
|
}
|
|
return dictionary
|
|
|
|
default:
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func checkError(_ status: CInt) {
|
|
if status < 0 {
|
|
print("[MpvPlayerCore] MPV error: \(safeString(mpv_error_string(status)))")
|
|
}
|
|
}
|
|
}
|