mirror of
https://github.com/kunkundi/crossdesk.git
synced 2026-10-16 17:10:20 +08:00
1321 lines
50 KiB
Swift
1321 lines
50 KiB
Swift
import AVFoundation
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import CoreImage
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import CoreVideo
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import Foundation
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import Security
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import UIKit
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enum MouseControlMode: String, CaseIterable, Identifiable {
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case relative
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case absolute
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private static let defaultsKey = "crossdesk.mobile.mouse-control-mode"
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var id: String { rawValue }
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var title: String {
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switch self {
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case .absolute: return "绝对位置"
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case .relative: return "相对位置"
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}
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}
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var detail: String {
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switch self {
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case .absolute:
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return "触摸位置直接对应远端屏幕位置，适合快速定位。"
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case .relative:
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return "像触控板一样滑动光标，点击时操作当前光标位置。"
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}
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}
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static var saved: MouseControlMode {
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guard let rawValue = UserDefaults.standard.string(forKey: defaultsKey),
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let mode = MouseControlMode(rawValue: rawValue) else {
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return .relative
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}
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return mode
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}
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func save() {
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UserDefaults.standard.set(rawValue, forKey: Self.defaultsKey)
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}
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}
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enum VideoAdaptationPolicy: String, CaseIterable, Identifiable {
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case frameRatePriority
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case qualityPriority
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case balanced
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private static let defaultsKey = "crossdesk.mobile.video-adaptation-policy"
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var id: String { rawValue }
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var title: String {
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switch self {
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case .frameRatePriority: return "帧率优先"
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case .qualityPriority: return "画质优先"
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case .balanced: return "平衡"
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}
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}
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var detail: String {
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switch self {
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case .frameRatePriority:
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return "优先保持画面流畅，带宽或编码压力较大时会更积极地降低分辨率。"
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case .qualityPriority:
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return "始终保持较高分辨率，带宽不足时通过降低帧率来保证画面清晰度。"
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case .balanced:
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return "兼顾清晰度和流畅度，只在持续压力下逐步降低分辨率。"
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}
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}
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var bridgeValue: CrossDeskVideoAdaptationPolicy {
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switch self {
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case .frameRatePriority: return .frameRatePriority
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case .qualityPriority: return .qualityPriority
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case .balanced: return .balanced
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}
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}
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static var saved: VideoAdaptationPolicy {
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guard let rawValue = UserDefaults.standard.string(forKey: defaultsKey),
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let policy = VideoAdaptationPolicy(rawValue: rawValue) else {
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return .qualityPriority
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}
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return policy
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}
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func save() {
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UserDefaults.standard.set(rawValue, forKey: Self.defaultsKey)
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}
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}
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private struct RemoteVideoFrame {
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let pixelBuffer: CVPixelBuffer
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let encodedSize: CGSize
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let id: UInt64
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let captureUptime: TimeInterval
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}
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struct RecentConnection: Codable, Identifiable, Equatable {
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let remoteID: String
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var displayName: String
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var lastConnectedAt: Date
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var remembersPassword: Bool
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var thumbnailFileName: String?
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var id: String { remoteID }
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}
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private enum RecentConnectionStore {
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private static let defaultsKey = "crossdesk.mobile.recent-connections.v1"
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private static let thumbnails = ThumbnailFileStore(directory:
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FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask)[0]
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.appendingPathComponent("RecentConnectionThumbnails", isDirectory: true))
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private static let context = CIContext(options: [.cacheIntermediates: false])
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static func load() -> [RecentConnection] {
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guard let data = UserDefaults.standard.data(forKey: defaultsKey),
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let connections = try? JSONDecoder().decode([RecentConnection].self,
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from: data) else {
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return []
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}
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return connections.sorted { $0.lastConnectedAt > $1.lastConnectedAt }
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}
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static func save(_ connections: [RecentConnection]) {
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guard let data = try? JSONEncoder().encode(connections) else { return }
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UserDefaults.standard.set(data, forKey: defaultsKey)
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}
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static func thumbnailURL(fileName: String) -> URL {
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thumbnails.url(for: fileName)
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}
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private static func thumbnailFileName(for remoteID: String) -> String {
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let safeID = remoteID.filter { $0.isLetter || $0.isNumber || $0 == "-" }
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return "\(safeID.isEmpty ? "remote" : safeID).jpg"
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}
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static func captureThumbnail(from pixelBuffer: CVPixelBuffer,
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remoteID: String,
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completion: @escaping (String?) -> Void) {
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let name = thumbnailFileName(for: remoteID)
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thumbnails.save(fileName: name, makeData: {
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let image = CIImage(cvPixelBuffer: pixelBuffer)
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let targetSize = CGSize(width: 640, height: 360)
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guard image.extent.width > 0, image.extent.height > 0 else { return nil }
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// Scale before materializing a bitmap to avoid a full-size frame copy.
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let scale = max(targetSize.width / image.extent.width,
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targetSize.height / image.extent.height)
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let scaled = image.transformed(by: CGAffineTransform(scaleX: scale, y: scale))
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let cropRect = CGRect(x: scaled.extent.midX - targetSize.width / 2,
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y: scaled.extent.midY - targetSize.height / 2,
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width: targetSize.width, height: targetSize.height).integral
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guard let thumbnailImage = context.createCGImage(scaled.cropped(to: cropRect),
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from: cropRect) else { return nil }
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return UIImage(cgImage: thumbnailImage).jpegData(compressionQuality: 0.78)
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}) { name in
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DispatchQueue.main.async { completion(name) }
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}
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}
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static func removeThumbnail(for connection: RecentConnection) {
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// The first capture may still be queued, before its filename has been
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// attached to the recent connection. Delete that pending file too.
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let pendingFileName = thumbnailFileName(for: connection.remoteID)
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thumbnails.remove(fileName: pendingFileName)
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if let fileName = connection.thumbnailFileName, fileName != pendingFileName {
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thumbnails.remove(fileName: fileName)
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}
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}
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static func removeAllThumbnails(completion: @escaping (Bool) -> Void) {
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thumbnails.removeAll { success in
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DispatchQueue.main.async { completion(success) }
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}
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}
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}
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private enum ConnectionCredentialStore {
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private static let service = "cn.crossdesk.mobile.saved-password"
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static func password(for remoteID: String) -> String? {
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let query: [String: Any] = [
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kSecClass as String: kSecClassGenericPassword,
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kSecAttrService as String: service,
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kSecAttrAccount as String: remoteID,
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kSecReturnData as String: true,
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kSecMatchLimit as String: kSecMatchLimitOne
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]
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var result: CFTypeRef?
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guard SecItemCopyMatching(query as CFDictionary, &result) == errSecSuccess,
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let data = result as? Data else {
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return nil
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}
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return String(data: data, encoding: .utf8)
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}
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static func save(password: String, for remoteID: String) {
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removePassword(for: remoteID)
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let attributes: [String: Any] = [
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kSecClass as String: kSecClassGenericPassword,
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kSecAttrService as String: service,
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kSecAttrAccount as String: remoteID,
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kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly,
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kSecValueData as String: Data(password.utf8)
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]
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SecItemAdd(attributes as CFDictionary, nil)
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}
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static func removePassword(for remoteID: String) {
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let query: [String: Any] = [
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kSecClass as String: kSecClassGenericPassword,
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kSecAttrService as String: service,
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kSecAttrAccount as String: remoteID
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]
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SecItemDelete(query as CFDictionary)
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}
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}
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private final class RemoteAudioPlayer {
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private let engine = AVAudioEngine()
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private let player = AVAudioPlayerNode()
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private let queue = DispatchQueue(label: "cn.crossdesk.mobile.audio")
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private let format = AVAudioFormat(commonFormat: .pcmFormatInt16,
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sampleRate: 48_000,
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channels: 1,
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interleaved: false)!
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private var enabled = true
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private var queuedBuffers = 0
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init() {
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engine.attach(player)
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engine.connect(player, to: engine.mainMixerNode, format: format)
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}
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func setEnabled(_ value: Bool) {
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queue.async {
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self.enabled = value
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if value {
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self.startIfNeeded()
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} else {
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self.player.stop()
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self.engine.stop()
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self.queuedBuffers = 0
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}
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}
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}
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func enqueue(_ data: Data) {
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guard !data.isEmpty, data.count.isMultiple(of: MemoryLayout<Int16>.size) else { return }
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queue.async {
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guard self.enabled, self.queuedBuffers < 80 else { return }
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self.startIfNeeded()
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guard self.engine.isRunning,
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let buffer = AVAudioPCMBuffer(pcmFormat: self.format,
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frameCapacity: AVAudioFrameCount(data.count / 2)),
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let samples = buffer.int16ChannelData?[0] else { return }
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buffer.frameLength = buffer.frameCapacity
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data.withUnsafeBytes { bytes in
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guard let source = bytes.baseAddress else { return }
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memcpy(samples, source, data.count)
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}
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self.queuedBuffers += 1
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self.player.scheduleBuffer(buffer) {
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self.queue.async {
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self.queuedBuffers = max(0, self.queuedBuffers - 1)
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}
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}
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if !self.player.isPlaying {
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self.player.play()
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}
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}
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}
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private func startIfNeeded() {
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guard enabled, !engine.isRunning else { return }
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do {
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let session = AVAudioSession.sharedInstance()
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try session.setCategory(.playback, mode: .moviePlayback,
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options: [.mixWithOthers])
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try session.setActive(true)
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try engine.start()
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player.play()
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} catch {
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// The next PCM packet retries activation after route changes.
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}
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}
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}
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final class RemoteSessionModel: NSObject, ObservableObject, CrossDeskRTCBridgeDelegate {
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static let officialSignalHost = "api.crossdesk.cn"
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static let officialSignalPort = "9099"
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private let privacyPreferences = PrivacyPreferences()
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@Published private(set) var hasNetworkConsent = PrivacyPreferences().hasNetworkConsent
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@Published private var privacyNotice = PrivacyNoticeState(
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hasNetworkConsent: PrivacyPreferences().hasNetworkConsent
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)
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@Published private(set) var savesConnectionThumbnails = PrivacyPreferences().savesThumbnails
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@Published private(set) var thumbnailCleanupInProgress = false
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@Published private(set) var thumbnailCleanupError: String?
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private var thumbnailGeneration = UUID()
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@Published var signalHost = RemoteSessionModel.officialSignalHost
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@Published var signalPort = RemoteSessionModel.officialSignalPort
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@Published var mouseControlMode = MouseControlMode.saved {
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didSet { mouseControlMode.save() }
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}
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@Published var videoAdaptationPolicy = VideoAdaptationPolicy.saved {
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didSet { videoAdaptationPolicy.save() }
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}
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@Published private(set) var videoSettings = RemoteVideoSettingsState()
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@Published var remoteID = ""
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@Published var password = ""
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@Published private(set) var signalStatus = "等待隐私授权"
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@Published private(set) var connectionStatus = "未连接"
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@Published private(set) var localIdentity = ""
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@Published private(set) var identityStorageWarning: String?
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@Published private(set) var isConnecting = false
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@Published private(set) var isConnected = false
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@Published private(set) var sessionVisible = false
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@Published private var videoFrame: RemoteVideoFrame?
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@Published private(set) var remoteCursorVisible = true
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@Published private(set) var remoteCursorShape = 0
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@Published private(set) var remoteCursorPosition: CGPoint?
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@Published private(set) var remoteCursorPositionRevision: UInt64 = 0
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@Published private(set) var remoteCursorVisualOffset = CGPoint.zero
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@Published private(set) var hasRemoteCursorState = false
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private var networkStatistics = RemoteNetworkStatistics()
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private var videoFrameID: UInt64 = 0
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@Published private(set) var displays: [String] = ["显示器 1"]
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@Published private(set) var displaySizes: [CGSize] = []
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@Published var selectedDisplay = 0
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@Published var audioEnabled = true
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@Published private(set) var clipboardStatus = ""
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@Published private(set) var transferStatus = ""
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@Published private(set) var transferProgress = 0.0
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@Published private(set) var receivedFileURL: URL?
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@Published private(set) var frameCount: UInt64 = 0
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@Published private(set) var recentConnections = RecentConnectionStore.load()
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@Published private(set) var recentConnectionPresence: [String: Bool] = [:]
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@Published private(set) var deviceOfflineAlertVisible = false
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@Published private(set) var connectionFailureMessage: String?
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@Published private(set) var remoteUpdateMessage: String?
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let bridge = CrossDeskRTCBridge()
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private let audioPlayer = RemoteAudioPlayer()
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private var activeRemoteID = ""
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private var remoteAppVersion = ""
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private var remoteHostInfoReceived = false
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private var remoteVersionCheckAttempted = false
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private var remoteVersionCheckGeneration = UUID()
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private var remoteVersionCheckTask: URLSessionDataTask?
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private static let remoteUpdateNotice = "被控端版本过低，请升级到最新版本。"
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private var pendingRememberPassword = false
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private var connectionRecorded = false
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private var shouldCaptureThumbnail = false
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private var activeDisplayName = ""
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private var remoteCursorSequence: UInt32?
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private var videoWasBackgrounded = false
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private var videoRecoveryTask: Task<Void, Never>?
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private var videoSettingsTimeoutTask: Task<Void, Never>?
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private var pendingPresenceRemoteID: String?
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private var presenceProbeGeneration: UInt64 = 0
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private var signalConnected = false
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private var presenceIsForeground = false
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private var awaitingPresenceSnapshot = true
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private var presenceUpdatedAt: [String: ContinuousClock.Instant] = [:]
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private var lastPresenceRefreshAt: ContinuousClock.Instant?
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private var presenceTimer: Timer?
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private let presenceClock = ContinuousClock()
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private static let presenceRefreshInterval: Duration = .seconds(30)
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private static let presenceMaxAge: Duration = .seconds(60)
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private struct BridgeConfiguration: Equatable {
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let host: String
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let signalPort: Int
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}
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private var bridgeConfiguration: BridgeConfiguration?
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var pixelBuffer: CVPixelBuffer? { videoFrame?.pixelBuffer }
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var currentVideoFrameID: UInt64 { videoFrame?.id ?? 0 }
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var frameCaptureUptime: TimeInterval { videoFrame?.captureUptime ?? 0 }
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var frameSize: CGSize { videoFrame?.encodedSize ?? .zero }
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var displayGeometrySize: CGSize {
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guard displaySizes.indices.contains(selectedDisplay) else {
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return frameSize
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}
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let size = displaySizes[selectedDisplay]
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return size.width > 0 && size.height > 0 ? size : frameSize
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}
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override init() {
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super.init()
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bridge.delegate = self
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if !savesConnectionThumbnails { clearConnectionThumbnails() }
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if hasNetworkConsent { configureBridge() }
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}
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deinit {
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presenceTimer?.invalidate()
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remoteVersionCheckTask?.cancel()
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}
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var privacyNoticeVisible: Bool { privacyNotice.isVisible }
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func applicationDidBecomeActive() {
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privacyNotice.didBecomeActive(hasNetworkConsent: hasNetworkConsent)
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refreshRecentConnectionPresenceAfterForeground()
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resumeVideoAfterForeground()
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}
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func applicationDidEnterBackground() {
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privacyNotice.didEnterBackground()
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suspendVideoForBackground()
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suspendPresenceMonitoring()
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}
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func showPrivacyNotice() {
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privacyNotice.show()
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}
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func dismissPrivacyNotice() {
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privacyNotice.dismiss()
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}
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func acceptNetworkConsent() {
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privacyPreferences.setNetworkConsent(true)
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hasNetworkConsent = true
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privacyNotice.dismiss()
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configureBridge()
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}
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func declineNetworkConsent() {
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revokeNetworkConsent()
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privacyNotice.dismiss()
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}
|
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|
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func revokeNetworkConsent() {
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privacyPreferences.setNetworkConsent(false)
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hasNetworkConsent = false
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signalConnected = false
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stopPresenceMonitoring()
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invalidatePresence()
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resetConnection()
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// disconnect() only closes the remote session. Consent withdrawal must
|
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// also destroy the persistent signaling peer and its reconnect loop.
|
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bridge.stopNetworking()
|
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bridgeConfiguration = nil
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localIdentity = ""
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signalStatus = "等待隐私授权"
|
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savesConnectionThumbnails = false
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clearConnectionThumbnails()
|
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}
|
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|
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func setSavesConnectionThumbnails(_ allowed: Bool) {
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privacyPreferences.setSavesThumbnails(allowed)
|
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savesConnectionThumbnails = privacyPreferences.savesThumbnails
|
||
if !savesConnectionThumbnails { clearConnectionThumbnails() }
|
||
// Enabling applies on the next connection, never to a frame captured
|
||
// before the user opted in.
|
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}
|
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|
||
func clearConnectionThumbnails() {
|
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thumbnailGeneration = UUID()
|
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shouldCaptureThumbnail = false
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for index in recentConnections.indices {
|
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recentConnections[index].thumbnailFileName = nil
|
||
}
|
||
RecentConnectionStore.save(recentConnections)
|
||
thumbnailCleanupInProgress = true
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||
thumbnailCleanupError = nil
|
||
let generation = thumbnailGeneration
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RecentConnectionStore.removeAllThumbnails { [weak self] success in
|
||
guard let self, self.thumbnailGeneration == generation else { return }
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||
self.thumbnailCleanupInProgress = false
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||
self.thumbnailCleanupError = success
|
||
? nil
|
||
: "部分预览图未能清除，请重试。"
|
||
}
|
||
}
|
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|
||
var usesOfficialServer: Bool {
|
||
signalHost == Self.officialSignalHost && signalPort == Self.officialSignalPort
|
||
}
|
||
|
||
func restoreOfficialServerConfiguration() {
|
||
signalHost = Self.officialSignalHost
|
||
signalPort = Self.officialSignalPort
|
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}
|
||
|
||
@discardableResult
|
||
func configureBridge() -> Bool {
|
||
guard hasNetworkConsent else {
|
||
signalStatus = "等待隐私授权"
|
||
return false
|
||
}
|
||
let host = signalHost.trimmingCharacters(in: .whitespacesAndNewlines)
|
||
guard let signal = Int(signalPort),
|
||
(1...65535).contains(signal),
|
||
!host.isEmpty else {
|
||
signalStatus = "服务器配置无效"
|
||
return false
|
||
}
|
||
let configuration = BridgeConfiguration(host: host, signalPort: signal)
|
||
if bridgeConfiguration != configuration {
|
||
bridgeConfiguration = configuration
|
||
signalConnected = false
|
||
signalStatus = "正在连接信令服务"
|
||
stopPresenceMonitoring()
|
||
invalidatePresence()
|
||
cancelPendingPresenceConnection()
|
||
} else if signalConnected {
|
||
signalStatus = "已连接服务器"
|
||
}
|
||
bridge.setVideoAdaptationPolicy(videoAdaptationPolicy.bridgeValue)
|
||
bridge.configure(withSignalHost: host,
|
||
signalPort: signal)
|
||
return true
|
||
}
|
||
|
||
func connect(password: String, rememberPassword: Bool) {
|
||
self.password = password
|
||
pendingRememberPassword = rememberPassword
|
||
connect()
|
||
}
|
||
|
||
func connect() {
|
||
guard hasNetworkConsent else {
|
||
showPrivacyNotice()
|
||
return
|
||
}
|
||
connectionFailureMessage = nil
|
||
let identifier = remoteID.trimmingCharacters(in: .whitespacesAndNewlines)
|
||
guard !identifier.isEmpty else {
|
||
connectionStatus = "请输入远程设备 ID"
|
||
return
|
||
}
|
||
remoteID = identifier
|
||
guard configureBridge() else {
|
||
connectionStatus = signalStatus
|
||
return
|
||
}
|
||
if isDeviceOnline(identifier) {
|
||
beginRemoteConnection(identifier)
|
||
} else {
|
||
beginPresenceProbe(identifier)
|
||
}
|
||
}
|
||
|
||
private func beginRemoteConnection(_ identifier: String) {
|
||
networkStatistics = RemoteNetworkStatistics()
|
||
resetRemoteVersionCheck()
|
||
cancelVideoRecovery()
|
||
resetVideoSettings()
|
||
cancelPresenceProbe()
|
||
activeRemoteID = identifier
|
||
activeDisplayName = ""
|
||
displaySizes = []
|
||
connectionRecorded = false
|
||
shouldCaptureThumbnail = savesConnectionThumbnails
|
||
isConnecting = true
|
||
isConnected = false
|
||
sessionVisible = false
|
||
resetRemoteCursorState()
|
||
connectionStatus = "正在准备连接…"
|
||
bridge.connect(toRemoteID: identifier, password: password)
|
||
}
|
||
|
||
private func beginPresenceProbe(_ identifier: String) {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground else {
|
||
showDeviceOffline()
|
||
return
|
||
}
|
||
|
||
presenceProbeGeneration &+= 1
|
||
let generation = presenceProbeGeneration
|
||
pendingPresenceRemoteID = identifier
|
||
isConnecting = true
|
||
isConnected = false
|
||
sessionVisible = false
|
||
connectionStatus = "正在确认设备状态…"
|
||
requestPresenceProbe(identifier)
|
||
|
||
DispatchQueue.main.asyncAfter(deadline: .now() + 5) { [weak self] in
|
||
guard let self,
|
||
self.presenceProbeGeneration == generation,
|
||
self.pendingPresenceRemoteID == identifier else {
|
||
return
|
||
}
|
||
self.cancelPresenceProbe()
|
||
self.refreshRecentConnectionPresence()
|
||
self.showDeviceOffline()
|
||
}
|
||
}
|
||
|
||
private func cancelPresenceProbe() {
|
||
presenceProbeGeneration &+= 1
|
||
pendingPresenceRemoteID = nil
|
||
}
|
||
|
||
private func cancelPendingPresenceConnection() {
|
||
guard pendingPresenceRemoteID != nil else { return }
|
||
cancelPresenceProbe()
|
||
isConnecting = false
|
||
connectionStatus = "未连接"
|
||
}
|
||
|
||
private func requestPresenceProbe(_ identifier: String) {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground else { return }
|
||
// Older servers ignore subscribe=false and replace the watched list.
|
||
var identifiers = recentConnections.map(\.remoteID)
|
||
if !identifiers.contains(identifier) { identifiers.append(identifier) }
|
||
bridge.requestPresence(remoteIDs: identifiers, subscribe: false)
|
||
}
|
||
|
||
private func showDeviceOffline() {
|
||
isConnecting = false
|
||
isConnected = false
|
||
sessionVisible = false
|
||
connectionStatus = "设备离线"
|
||
deviceOfflineAlertVisible = true
|
||
}
|
||
|
||
func dismissDeviceOfflineAlert() {
|
||
deviceOfflineAlertVisible = false
|
||
}
|
||
|
||
func dismissConnectionFailure() {
|
||
guard connectionFailureMessage != nil else { return }
|
||
connectionFailureMessage = nil
|
||
}
|
||
|
||
private func finishConnection(withError message: String) {
|
||
// Cleanup may emit Closed. Preserve the terminal reason independently
|
||
// of the progress view and invalidate those callbacks in the bridge.
|
||
resetConnection()
|
||
connectionStatus = message
|
||
connectionFailureMessage = message
|
||
}
|
||
|
||
func disconnect() {
|
||
resetConnection()
|
||
}
|
||
|
||
private func resetConnection() {
|
||
resetRemoteVersionCheck()
|
||
resetVideoSettings()
|
||
connectionFailureMessage = nil
|
||
cancelVideoRecovery()
|
||
let wasCheckingPresence = pendingPresenceRemoteID != nil
|
||
cancelPresenceProbe()
|
||
if wasCheckingPresence {
|
||
refreshRecentConnectionPresence()
|
||
}
|
||
bridge.disconnect()
|
||
isConnecting = false
|
||
isConnected = false
|
||
sessionVisible = false
|
||
videoFrame = nil
|
||
resetRemoteCursorState()
|
||
frameCount = 0
|
||
networkStatistics = RemoteNetworkStatistics()
|
||
displays = ["显示器 1"]
|
||
displaySizes = []
|
||
selectedDisplay = 0
|
||
connectionStatus = "未连接"
|
||
audioPlayer.setEnabled(false)
|
||
AppOrientation.update(to: .portrait)
|
||
}
|
||
|
||
func retry() {
|
||
resetRemoteVersionCheck()
|
||
cancelVideoRecovery()
|
||
bridge.disconnect()
|
||
connect()
|
||
}
|
||
|
||
func dismissRemoteUpdate() {
|
||
remoteUpdateMessage = nil
|
||
}
|
||
|
||
private func resetRemoteVersionCheck() {
|
||
remoteVersionCheckTask?.cancel()
|
||
remoteVersionCheckTask = nil
|
||
remoteVersionCheckGeneration = UUID()
|
||
remoteVersionCheckAttempted = false
|
||
remoteAppVersion = ""
|
||
remoteHostInfoReceived = false
|
||
remoteUpdateMessage = nil
|
||
}
|
||
|
||
private func checkRemoteVersionIfNeeded() {
|
||
guard hasNetworkConsent, isConnected, remoteHostInfoReceived,
|
||
!remoteVersionCheckAttempted else { return }
|
||
remoteVersionCheckAttempted = true
|
||
if remoteAppVersion.isEmpty {
|
||
remoteUpdateMessage = Self.remoteUpdateNotice
|
||
return
|
||
}
|
||
let generation = remoteVersionCheckGeneration
|
||
let appVersion = remoteAppVersion
|
||
// Only public release metadata is fetched; no peer ID or version is sent.
|
||
let url = URL(string: "https://version.crossdesk.cn/version.json")!
|
||
let request = URLRequest(url: url, cachePolicy: .reloadIgnoringLocalCacheData,
|
||
timeoutInterval: 15)
|
||
remoteVersionCheckTask = URLSession.shared.dataTask(with: request) {
|
||
[weak self] data, response, error in
|
||
let latest: String?
|
||
if error == nil, let data,
|
||
(response as? HTTPURLResponse)?.statusCode == 200 {
|
||
latest = CrossDeskRTCBridge.availableUpdate(appVersion: appVersion,
|
||
releaseJSON: data)
|
||
} else {
|
||
latest = nil
|
||
}
|
||
DispatchQueue.main.async { [weak self] in
|
||
guard let self,
|
||
self.remoteVersionCheckGeneration == generation,
|
||
self.isConnected else { return }
|
||
self.remoteVersionCheckTask = nil
|
||
guard latest != nil else { return }
|
||
self.remoteUpdateMessage = Self.remoteUpdateNotice
|
||
}
|
||
}
|
||
remoteVersionCheckTask?.resume()
|
||
}
|
||
|
||
func savedPassword(for remoteID: String) -> String {
|
||
ConnectionCredentialStore.password(for: remoteID) ?? ""
|
||
}
|
||
|
||
func savedCredential(for remoteID: String) -> String? {
|
||
ConnectionCredentialStore.password(for: remoteID)
|
||
}
|
||
|
||
func remembersPassword(for remoteID: String) -> Bool {
|
||
recentConnections.first(where: { $0.remoteID == remoteID })?
|
||
.remembersPassword == true
|
||
}
|
||
|
||
func thumbnailImage(for connection: RecentConnection) -> UIImage? {
|
||
guard savesConnectionThumbnails,
|
||
let fileName = connection.thumbnailFileName else {
|
||
return nil
|
||
}
|
||
return UIImage(contentsOfFile: RecentConnectionStore.thumbnailURL(fileName: fileName).path)
|
||
}
|
||
|
||
func isRecentConnectionOnline(_ connection: RecentConnection) -> Bool {
|
||
isDeviceOnline(connection.remoteID)
|
||
}
|
||
|
||
private func isDeviceOnline(_ identifier: String) -> Bool {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground, !awaitingPresenceSnapshot,
|
||
recentConnectionPresence[identifier] == true,
|
||
let updatedAt = presenceUpdatedAt[identifier] else { return false }
|
||
return updatedAt.duration(to: presenceClock.now) < Self.presenceMaxAge
|
||
}
|
||
|
||
private func refreshRecentConnectionPresence() {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground else { return }
|
||
lastPresenceRefreshAt = presenceClock.now
|
||
bridge.requestPresence(remoteIDs: recentConnections.map(\.remoteID),
|
||
subscribe: true)
|
||
}
|
||
|
||
private func invalidatePresence() {
|
||
bridge.invalidatePresence()
|
||
recentConnectionPresence = [:]
|
||
presenceUpdatedAt = [:]
|
||
awaitingPresenceSnapshot = true
|
||
lastPresenceRefreshAt = nil
|
||
}
|
||
|
||
private func startPresenceMonitoring() {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground, presenceTimer == nil else { return }
|
||
let timer = Timer(timeInterval: 1, repeats: true) { [weak self] _ in
|
||
self?.maintainPresence()
|
||
}
|
||
RunLoop.main.add(timer, forMode: .common)
|
||
presenceTimer = timer
|
||
}
|
||
|
||
private func stopPresenceMonitoring() {
|
||
presenceTimer?.invalidate()
|
||
presenceTimer = nil
|
||
}
|
||
|
||
private func maintainPresence() {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground else { return }
|
||
let now = presenceClock.now
|
||
let expired = presenceUpdatedAt.compactMap { identifier, updatedAt in
|
||
updatedAt.duration(to: now) >= Self.presenceMaxAge ? identifier : nil
|
||
}
|
||
if !expired.isEmpty {
|
||
var updated = recentConnectionPresence
|
||
for identifier in expired {
|
||
updated.removeValue(forKey: identifier)
|
||
presenceUpdatedAt.removeValue(forKey: identifier)
|
||
}
|
||
recentConnectionPresence = updated
|
||
}
|
||
if lastPresenceRefreshAt.map({ $0.duration(to: now) >= Self.presenceRefreshInterval }) ?? true {
|
||
refreshRecentConnectionPresence()
|
||
}
|
||
}
|
||
|
||
func suspendPresenceMonitoring() {
|
||
presenceIsForeground = false
|
||
stopPresenceMonitoring()
|
||
invalidatePresence()
|
||
cancelPendingPresenceConnection()
|
||
}
|
||
|
||
func suspendVideoForBackground() {
|
||
videoWasBackgrounded = true
|
||
networkStatistics.resetVideo()
|
||
cancelVideoRecovery()
|
||
}
|
||
|
||
func resumeVideoAfterForeground() {
|
||
guard videoWasBackgrounded else { return }
|
||
videoWasBackgrounded = false
|
||
guard isConnected, sessionVisible else { return }
|
||
|
||
cancelVideoRecovery()
|
||
NSLog("CrossDesk resuming foreground video, requesting key frame")
|
||
bridge.requestKeyFrame()
|
||
// The first request can race transport resumption. Retry briefly until
|
||
// a decoded frame arrives, and never carry retries into another session.
|
||
videoRecoveryTask = Task { @MainActor [weak self] in
|
||
for delay in [500_000_000, 1_000_000_000, 2_000_000_000] as [UInt64] {
|
||
do {
|
||
try await Task.sleep(nanoseconds: delay)
|
||
} catch {
|
||
return
|
||
}
|
||
guard !Task.isCancelled, let self,
|
||
!self.videoWasBackgrounded,
|
||
self.isConnected, self.sessionVisible else { return }
|
||
self.bridge.requestKeyFrame()
|
||
}
|
||
}
|
||
}
|
||
|
||
private func cancelVideoRecovery() {
|
||
videoRecoveryTask?.cancel()
|
||
videoRecoveryTask = nil
|
||
}
|
||
|
||
func refreshRecentConnectionPresenceAfterForeground() {
|
||
presenceIsForeground = true
|
||
invalidatePresence()
|
||
startPresenceMonitoring()
|
||
refreshRecentConnectionPresence()
|
||
if let pendingPresenceRemoteID {
|
||
requestPresenceProbe(pendingPresenceRemoteID)
|
||
}
|
||
}
|
||
|
||
func removeRecentConnection(_ connection: RecentConnection) {
|
||
recentConnections.removeAll { $0.remoteID == connection.remoteID }
|
||
recentConnectionPresence.removeValue(forKey: connection.remoteID)
|
||
presenceUpdatedAt.removeValue(forKey: connection.remoteID)
|
||
RecentConnectionStore.save(recentConnections)
|
||
RecentConnectionStore.removeThumbnail(for: connection)
|
||
ConnectionCredentialStore.removePassword(for: connection.remoteID)
|
||
refreshRecentConnectionPresence()
|
||
}
|
||
|
||
private func recordSuccessfulConnectionIfNeeded() {
|
||
guard !connectionRecorded, !activeRemoteID.isEmpty else { return }
|
||
connectionRecorded = true
|
||
|
||
if pendingRememberPassword {
|
||
ConnectionCredentialStore.save(password: password, for: activeRemoteID)
|
||
} else {
|
||
ConnectionCredentialStore.removePassword(for: activeRemoteID)
|
||
}
|
||
|
||
let previous = recentConnections.first { $0.remoteID == activeRemoteID }
|
||
let title = activeDisplayName.isEmpty
|
||
? (previous?.displayName ?? activeRemoteID)
|
||
: activeDisplayName
|
||
let connection = RecentConnection(
|
||
remoteID: activeRemoteID,
|
||
displayName: title,
|
||
lastConnectedAt: Date(),
|
||
remembersPassword: pendingRememberPassword,
|
||
thumbnailFileName: previous?.thumbnailFileName
|
||
)
|
||
recentConnections.removeAll { $0.remoteID == activeRemoteID }
|
||
recentConnections.insert(connection, at: 0)
|
||
RecentConnectionStore.save(recentConnections)
|
||
refreshRecentConnectionPresence()
|
||
}
|
||
|
||
private func updateActiveConnectionName(_ name: String) {
|
||
let trimmed = name.trimmingCharacters(in: .whitespacesAndNewlines)
|
||
guard !trimmed.isEmpty, !activeRemoteID.isEmpty else { return }
|
||
activeDisplayName = trimmed
|
||
guard let index = recentConnections.firstIndex(where: {
|
||
$0.remoteID == activeRemoteID
|
||
}) else { return }
|
||
recentConnections[index].displayName = trimmed
|
||
RecentConnectionStore.save(recentConnections)
|
||
}
|
||
|
||
private func captureRecentThumbnailIfNeeded(_ pixelBuffer: CVPixelBuffer) {
|
||
guard hasNetworkConsent, savesConnectionThumbnails,
|
||
shouldCaptureThumbnail, !activeRemoteID.isEmpty else { return }
|
||
shouldCaptureThumbnail = false
|
||
let generation = thumbnailGeneration
|
||
let identifier = activeRemoteID
|
||
RecentConnectionStore.captureThumbnail(from: pixelBuffer,
|
||
remoteID: identifier) { [weak self] fileName in
|
||
guard let self, let fileName, self.hasNetworkConsent,
|
||
self.savesConnectionThumbnails, self.thumbnailGeneration == generation,
|
||
let index = self.recentConnections.firstIndex(where: {
|
||
$0.remoteID == identifier
|
||
}) else { return }
|
||
self.recentConnections[index].thumbnailFileName = fileName
|
||
RecentConnectionStore.save(self.recentConnections)
|
||
}
|
||
}
|
||
|
||
func selectDisplay(_ index: Int) {
|
||
guard displays.indices.contains(index) else { return }
|
||
selectedDisplay = index
|
||
networkStatistics.resetVideo()
|
||
videoFrame = nil
|
||
resetRemoteCursorState()
|
||
frameCount = 0
|
||
bridge.switch(toDisplay: index)
|
||
}
|
||
|
||
var canChangeVideoSettings: Bool {
|
||
isConnected && videoSettings.supported
|
||
}
|
||
|
||
var videoSettingsFeedback: String {
|
||
if !canChangeVideoSettings {
|
||
return "连接建立后可调整，需被控端支持。"
|
||
}
|
||
if videoSettings.failed { return "调整失败，请重试。" }
|
||
return videoSettings.pending ? "正在应用…" : ""
|
||
}
|
||
|
||
func updateVideoSettings(quality: Int? = nil, frameRate: Int? = nil,
|
||
preference: Int? = nil) {
|
||
guard hasNetworkConsent, canChangeVideoSettings else { return }
|
||
var settings = videoSettings.selection
|
||
if let quality { settings.quality = quality }
|
||
if let frameRate { settings.frameRate = frameRate }
|
||
if let preference { settings.preference = preference }
|
||
guard let requestID = videoSettings.begin(settings) else { return }
|
||
videoSettingsTimeoutTask?.cancel()
|
||
bridge.sendVideoSettings(quality: settings.quality,
|
||
frameRate: settings.frameRate,
|
||
preference: settings.preference,
|
||
requestID: requestID)
|
||
videoSettingsTimeoutTask = Task { @MainActor [weak self] in
|
||
do {
|
||
try await Task.sleep(nanoseconds: 5_000_000_000)
|
||
} catch { return }
|
||
self?.videoSettings.expire(requestID: requestID)
|
||
}
|
||
}
|
||
|
||
private func resetVideoSettings() {
|
||
videoSettingsTimeoutTask?.cancel()
|
||
videoSettingsTimeoutTask = nil
|
||
videoSettings = RemoteVideoSettingsState(
|
||
preference: videoAdaptationPolicy.bridgeValue.rawValue)
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didReceiveVideoSettingsQuality quality: Int,
|
||
frameRate: Int, preference: Int,
|
||
requestID: UInt32, accepted: Bool) {
|
||
guard hasNetworkConsent, isConnected else { return }
|
||
videoSettings.receive(RemoteVideoSettings(quality: quality,
|
||
frameRate: frameRate,
|
||
preference: preference),
|
||
requestID: requestID, accepted: accepted)
|
||
if !videoSettings.pending {
|
||
videoSettingsTimeoutTask?.cancel()
|
||
videoSettingsTimeoutTask = nil
|
||
}
|
||
}
|
||
|
||
private func resetRemoteCursorState() {
|
||
remoteCursorVisible = true
|
||
remoteCursorShape = 0
|
||
remoteCursorPosition = nil
|
||
remoteCursorPositionRevision &+= 1
|
||
remoteCursorVisualOffset = .zero
|
||
hasRemoteCursorState = false
|
||
remoteCursorSequence = nil
|
||
}
|
||
|
||
func toggleAudio() {
|
||
audioEnabled.toggle()
|
||
audioPlayer.setEnabled(audioEnabled)
|
||
bridge.setAudioEnabled(audioEnabled)
|
||
}
|
||
|
||
func sendClipboard() {
|
||
guard let text = UIPasteboard.general.string, !text.isEmpty else {
|
||
clipboardStatus = "剪贴板中没有文本"
|
||
return
|
||
}
|
||
guard text.lengthOfBytes(using: .utf8) <= 128 * 1024 else {
|
||
clipboardStatus = "剪贴板文本超过 128 KiB"
|
||
return
|
||
}
|
||
bridge.sendClipboardText(text)
|
||
clipboardStatus = "已发送本机剪贴板"
|
||
}
|
||
|
||
func sendFile(_ url: URL) {
|
||
transferStatus = "正在发送 \(url.lastPathComponent)"
|
||
transferProgress = 0
|
||
bridge.sendFile(at: url)
|
||
}
|
||
|
||
func sendKeyStroke(_ keyCode: UInt) {
|
||
bridge.sendWindowsKeyCode(keyCode, isDown: true)
|
||
bridge.sendWindowsKeyCode(keyCode, isDown: false)
|
||
}
|
||
|
||
func sendKeyState(_ keyCode: UInt, isDown: Bool) {
|
||
bridge.sendWindowsKeyCode(keyCode, isDown: isDown)
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge, didChangeIdentityStorageError hasError: Bool) {
|
||
identityStorageWarning = hasError
|
||
? "本机登录凭据暂时无法安全存取。请解锁设备后，在设置中点击“应用”重试。"
|
||
: nil
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didChange state: CrossDeskSignalState) {
|
||
guard hasNetworkConsent else { return }
|
||
signalConnected = state.rawValue == 1
|
||
invalidatePresence()
|
||
switch state.rawValue {
|
||
case 0: signalStatus = "正在连接信令服务"
|
||
case 1: signalStatus = "已连接服务器"
|
||
case 2: signalStatus = "信令连接失败"
|
||
case 3: signalStatus = "信令连接已关闭"
|
||
case 4: signalStatus = "信令服务重连中"
|
||
case 5: signalStatus = "信令服务器已关闭连接"
|
||
case 6: signalStatus = "TLS 证书校验失败"
|
||
case 7: signalStatus = "无法访问本机登录凭据，请解锁后重试"
|
||
default: signalStatus = "未知信令状态"
|
||
}
|
||
if signalConnected {
|
||
startPresenceMonitoring()
|
||
refreshRecentConnectionPresence()
|
||
if let pendingPresenceRemoteID {
|
||
requestPresenceProbe(pendingPresenceRemoteID)
|
||
}
|
||
} else {
|
||
stopPresenceMonitoring()
|
||
cancelPendingPresenceConnection()
|
||
}
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didChange state: CrossDeskConnectionState,
|
||
remoteID: String) {
|
||
guard isConnecting || isConnected || sessionVisible,
|
||
remoteID.isEmpty || remoteID == activeRemoteID else {
|
||
return
|
||
}
|
||
isConnected = state.rawValue == 1
|
||
if !isConnected {
|
||
cancelVideoRecovery()
|
||
}
|
||
isConnecting = [0, 2].contains(state.rawValue)
|
||
switch state.rawValue {
|
||
case 0: connectionStatus = "正在建立远程连接"
|
||
case 1:
|
||
connectionStatus = "已连接"
|
||
sessionVisible = true
|
||
if videoSettings.requestID == 0 { updateVideoSettings() }
|
||
checkRemoteVersionIfNeeded()
|
||
recordSuccessfulConnectionIfNeeded()
|
||
audioPlayer.setEnabled(audioEnabled)
|
||
bridge.setAudioEnabled(audioEnabled)
|
||
AppOrientation.update(to: .allButUpsideDown)
|
||
case 2: connectionStatus = "正在收集 ICE 候选"
|
||
case 3: finishConnection(withError: "网络连接已中断，请重新连接。")
|
||
case 4:
|
||
finishConnection(withError: "P2P/TURN 建链失败，请检查网络后重试。")
|
||
case 5:
|
||
finishConnection(withError: "远程连接已结束。")
|
||
case 6:
|
||
finishConnection(withError: "访问密码错误，请重新输入。")
|
||
case 7:
|
||
if !remoteID.isEmpty {
|
||
recentConnectionPresence[remoteID] = false
|
||
presenceUpdatedAt.removeValue(forKey: remoteID)
|
||
}
|
||
finishConnection(withError: "远程设备 ID 不存在，请检查设备 ID。")
|
||
case 8:
|
||
if !remoteID.isEmpty {
|
||
recentConnectionPresence[remoteID] = false
|
||
presenceUpdatedAt.removeValue(forKey: remoteID)
|
||
}
|
||
finishConnection(withError: "远程设备当前不可用，请稍后重试。")
|
||
default: connectionStatus = "未知连接状态"
|
||
}
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge, didProvisionIdentity identity: String) {
|
||
guard hasNetworkConsent else { return }
|
||
localIdentity = identity.split(separator: "@").first.map(String.init) ?? identity
|
||
refreshRecentConnectionPresence()
|
||
if let pendingPresenceRemoteID {
|
||
requestPresenceProbe(pendingPresenceRemoteID)
|
||
}
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didReceivePresence presence: [String: NSNumber],
|
||
snapshot: Bool) {
|
||
guard hasNetworkConsent, signalConnected, presenceIsForeground,
|
||
snapshot || !awaitingPresenceSnapshot else { return }
|
||
var updated = snapshot ? [:] : recentConnectionPresence
|
||
if snapshot {
|
||
presenceUpdatedAt = [:]
|
||
awaitingPresenceSnapshot = false
|
||
}
|
||
let now = presenceClock.now
|
||
let watched = Set(recentConnections.map(\.remoteID))
|
||
for (remoteID, online) in presence
|
||
where watched.contains(remoteID) || pendingPresenceRemoteID == remoteID {
|
||
updated[remoteID] = online.boolValue
|
||
presenceUpdatedAt[remoteID] = now
|
||
}
|
||
recentConnectionPresence = updated
|
||
|
||
guard let pendingRemoteID = pendingPresenceRemoteID,
|
||
let online = presence[pendingRemoteID]?.boolValue else {
|
||
return
|
||
}
|
||
cancelPresenceProbe()
|
||
refreshRecentConnectionPresence()
|
||
if online {
|
||
beginRemoteConnection(pendingRemoteID)
|
||
} else {
|
||
showDeviceOffline()
|
||
}
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didReceive pixelBuffer: CVPixelBuffer,
|
||
width: Int,
|
||
height: Int,
|
||
captureUptime: TimeInterval) {
|
||
guard hasNetworkConsent, isConnected, !videoWasBackgrounded else { return }
|
||
cancelVideoRecovery()
|
||
// Buffer and encoded dimensions must be one observable value. Adaptive
|
||
// resolution changes must never expose a new frame with the previous
|
||
// frame's geometry to SwiftUI.
|
||
videoFrameID &+= 1
|
||
videoFrame = RemoteVideoFrame(
|
||
pixelBuffer: pixelBuffer,
|
||
encodedSize: CGSize(width: width, height: height),
|
||
id: videoFrameID,
|
||
captureUptime: captureUptime
|
||
)
|
||
frameCount &+= 1
|
||
captureRecentThumbnailIfNeeded(pixelBuffer)
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didReceiveHostName hostName: String,
|
||
appVersion: String,
|
||
displayNames remoteDisplayNames: [String],
|
||
displaySizes remoteDisplaySizes: [NSValue],
|
||
supportsVideoSettings: Bool) {
|
||
let previouslySupported = videoSettings.supported
|
||
videoSettings.setSupported(supportsVideoSettings)
|
||
if !supportsVideoSettings {
|
||
videoSettingsTimeoutTask?.cancel()
|
||
videoSettingsTimeoutTask = nil
|
||
} else if !previouslySupported {
|
||
updateVideoSettings()
|
||
}
|
||
remoteHostInfoReceived = true
|
||
remoteAppVersion = appVersion
|
||
checkRemoteVersionIfNeeded()
|
||
updateActiveConnectionName(hostName)
|
||
let names = remoteDisplayNames.enumerated().map { index, displayName in
|
||
let name = displayName.trimmingCharacters(in: .whitespacesAndNewlines)
|
||
return name.isEmpty ? "显示器 \(index + 1)" : name
|
||
}
|
||
if !names.isEmpty {
|
||
displays = names
|
||
displaySizes = remoteDisplaySizes.map(\.cgSizeValue)
|
||
selectedDisplay = min(selectedDisplay, names.count - 1)
|
||
bridge.switch(toDisplay: selectedDisplay)
|
||
}
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didReceiveCursorVisible visible: Bool,
|
||
shape: Int,
|
||
positionUpdate: Bool,
|
||
positionValid: Bool,
|
||
x: Float,
|
||
y: Float,
|
||
visualOffsetX: Float,
|
||
visualOffsetY: Float,
|
||
display displayIndex: Int,
|
||
sequence: UInt32) {
|
||
if let previous = remoteCursorSequence,
|
||
sequence != 0,
|
||
Int32(bitPattern: sequence &- previous) <= 0 {
|
||
return
|
||
}
|
||
|
||
remoteCursorSequence = sequence
|
||
remoteCursorVisible = visible
|
||
remoteCursorShape = min(max(shape, 0), 28)
|
||
remoteCursorVisualOffset = CGPoint(x: CGFloat(visualOffsetX),
|
||
y: CGFloat(visualOffsetY))
|
||
if positionUpdate {
|
||
if positionValid, displayIndex == selectedDisplay {
|
||
remoteCursorPosition = CGPoint(
|
||
x: CGFloat(min(max(x, 0), 1)),
|
||
y: CGFloat(min(max(y, 0), 1))
|
||
)
|
||
} else {
|
||
remoteCursorPosition = nil
|
||
}
|
||
remoteCursorPositionRevision &+= 1
|
||
}
|
||
hasRemoteCursorState = true
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge, didReceiveAudioPCM pcmData: Data) {
|
||
guard hasNetworkConsent, isConnected else { return }
|
||
audioPlayer.enqueue(pcmData)
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge, didReceiveClipboardText text: String) {
|
||
guard hasNetworkConsent, isConnected else { return }
|
||
UIPasteboard.general.string = text
|
||
clipboardStatus = "已接收远端剪贴板"
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didUpdateFileTransfer fileName: String,
|
||
progress: Double,
|
||
sending: Bool) {
|
||
if progress < 0 {
|
||
transferStatus = "\(fileName) 传输失败"
|
||
transferProgress = 0
|
||
return
|
||
}
|
||
transferProgress = progress
|
||
let percent = Int((progress * 100).rounded())
|
||
transferStatus = "\(sending ? "发送" : "接收") \(fileName) · \(percent)%"
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge, didReceiveFileAt fileURL: URL) {
|
||
receivedFileURL = fileURL
|
||
transferStatus = "已接收 \(fileURL.lastPathComponent)"
|
||
transferProgress = 1
|
||
}
|
||
|
||
func rtcBridge(_ bridge: CrossDeskRTCBridge,
|
||
didUpdateNetworkStats stats: CrossDeskNetworkStats) {
|
||
guard hasNetworkConsent, isConnected else { return }
|
||
func traffic(_ value: CrossDeskTrafficStats) -> RemoteTrafficStatistics {
|
||
RemoteTrafficStatistics(inboundBitrate: value.inboundBitrate,
|
||
outboundBitrate: value.outboundBitrate,
|
||
lossRate: value.lossRate)
|
||
}
|
||
let mode: RemoteNetworkReport.Mode
|
||
switch stats.traversalMode {
|
||
case .direct: mode = .direct
|
||
case .relay: mode = .relay
|
||
default: mode = .unknown
|
||
}
|
||
networkStatistics.receive(RemoteNetworkReport(
|
||
video: traffic(stats.video), audio: traffic(stats.audio),
|
||
data: traffic(stats.data), total: traffic(stats.total), mode: mode,
|
||
srtpActive: stats.srtpActive.boolValue, rttMilliseconds: stats.rttMilliseconds
|
||
), at: ProcessInfo.processInfo.systemUptime)
|
||
}
|
||
|
||
// Called after the exact frame enters AVSampleBufferDisplayLayer. Keep this
|
||
// accumulator unpublished: submitting pixels occurs during a SwiftUI update.
|
||
func recordVideoFrameSubmission(id: UInt64, captureUptime: TimeInterval) {
|
||
guard isConnected, !videoWasBackgrounded, id == videoFrame?.id else { return }
|
||
networkStatistics.recordSubmittedFrame(id: id, captureUptime: captureUptime,
|
||
at: ProcessInfo.processInfo.systemUptime)
|
||
}
|
||
|
||
var networkSnapshot: RemoteNetworkSnapshot {
|
||
guard isConnected else { return RemoteNetworkSnapshot() }
|
||
return networkStatistics.displaySnapshot(at: ProcessInfo.processInfo.systemUptime)
|
||
}
|
||
|
||
var videoStatus: String {
|
||
if frameCount > 0 {
|
||
return "视频 \(Int(frameSize.width))×\(Int(frameSize.height)) · \(frameCount) 帧"
|
||
}
|
||
return isConnected ? "正在取回远程画面…" : "等待连接"
|
||
}
|
||
}
|