Files
punktfunk/clients/apple/Sources/PunktfunkShared/DefaultsKeys.swift
T
enricobuehler 14c5e7c11c feat(apple/M2): opt-in background keep-alive (audio + video-drop + timeout)
Backgrounding a live session no longer freezes it when the user opts in: audio
keeps playing (UIBackgroundModes audio), the QUIC connection + pump stay live,
video decode is DROPPED, and a bounded timer auto-disconnects. Off by default.

- PunktfunkConnection.setVideoDropped/isVideoDropped: a tiny lock-guarded flag
  both pumps read every iteration. StreamPump (stage-1), Stage2Pipeline (VT +
  PyroWave) drain nextAU() for flow control but DISCARD the AU before any
  VideoToolbox/Metal work — the crash/jetsam-safe seam (no GPU off-screen).
- SessionModel.enterBackground(timeoutMinutes:) / exitBackground(): set the drop
  flag, mute the mic (privacy — SessionAudio.setMicMuted pauses the capture
  engine), arm a DispatchSourceTimer that disconnect(deliberate:false)s on fire
  (keeps host linger → fast late reconnect). exitBackground clears the flag and
  requestKeyframe()s; the pump's freeze gate auto-arms on the resumed
  frame-index gap so concealed frames are withheld until the IDR re-anchors.
  disconnect() cancels the timer + clears isBackgrounded.
- ContentView scenePhase driver (iOS): .background+streaming+setting →
  enterBackground; .active → exitBackground. scenePhase (not willResignActive)
  so Control-Center/app-switcher peeks don't start the timer.
- Settings → General (iOS-only keepAliveSection): toggle + 1/5/10/30 timeout;
  new keys backgroundKeepAlive (def off) / backgroundTimeoutMinutes (def 10).
- Info.plist: UIBackgroundModes [audio] + NSSupportsLiveActivities (for M3).

macOS swift build + swift test green (142 tests). The iOS-gated scenePhase
handler + settings section are not exercised by the macOS CI target (known §9
gap) — need on-glass verification (audio never gaps, video re-anchors <1s LAN,
timeout ends the session, phone-call audio-steal degrades gracefully).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-16 18:41:46 +02:00

135 lines
10 KiB
Swift

// One source of truth for the client's UserDefaults / @AppStorage keys. A magic-string key
// duplicated across a setting's writer (a Settings @AppStorage) and reader (e.g. a stream view
// reading UserDefaults) splits silently on a typo — the setting just stops taking effect. These
// live in the dependency-free PunktfunkShared module (re-exported by PunktfunkKit) because the app,
// the kit's views, AND the widget extension all read them — the widget needs `DefaultsKey.hosts`.
import Foundation
/// Persisted-setting keys. The string VALUES are stable on disk — rename the symbol freely, but
/// never the string (it would orphan everyone's saved value).
public enum DefaultsKey {
public static let streamWidth = "punktfunk.width"
public static let streamHeight = "punktfunk.height"
public static let streamHz = "punktfunk.hz"
/// Match-window resolution policy (design/midstream-resolution-resize.md D1/D2): when on, the
/// stream mode FOLLOWS the session view — the connect asks for the view's pixel size and a
/// mid-session resize (a windowed macOS window, an iPad Stage Manager / Split View scene)
/// renegotiates the host's virtual display + encoder (`PunktfunkConnection.requestMode`), so a
/// windowed session streams native-resolution pixels instead of scaling. Off (default): the
/// explicit `streamWidth`/`streamHeight` are used and never auto-resized (a fullscreen session
/// is native either way, so this degenerates to Auto-native there). Read per session by the
/// stream views' `MatchWindowFollower`.
public static let matchWindow = "punktfunk.matchWindow"
public static let compositor = "punktfunk.compositor"
public static let gamepadType = "punktfunk.gamepadType"
public static let gamepadID = "punktfunk.gamepadID"
public static let bitrateKbps = "punktfunk.bitrateKbps"
/// Requested audio channel count: 2 (stereo), 6 (5.1) or 8 (7.1). The host clamps to what it
/// can capture; the resolved count drives the in-core decode + AVAudioEngine layout.
public static let audioChannels = "punktfunk.audioChannels"
/// Preferred video codec: `"auto"` (host decides), `"hevc"`, `"h264"`, `"av1"`, or
/// `"pyrowave"` (the opt-in wired-LAN wavelet codec — picking it advertises AND prefers it,
/// and forces the session SDR). A soft preference — the host emits it when it can, else
/// falls back. Drives the decoder via `Welcome.codec`.
public static let codec = "punktfunk.codec"
public static let micEnabled = "punktfunk.micEnabled"
public static let speakerUID = "punktfunk.speakerUID"
public static let micUID = "punktfunk.micUID"
/// macOS: which input channel of the chosen mic device feeds the host. 0 = "Auto" (sum every
/// channel to mono — a mic on a single input of a multi-channel interface passes at full
/// level); n≥1 pins 1-based input channel n. Multi-channel interfaces expose the mic on ONE
/// discrete channel, and the default N→stereo downmix grabs channels 0/1 (silence when the mic
/// is higher up), so we fold to mono ourselves. Only meaningful for multi-channel devices.
public static let micChannel = "punktfunk.micChannel"
/// Which presenter runs a session: "stage2" (default — explicit decode + Metal present on
/// frame arrival), "stage3" (same pipeline, glass-gated present pacing — the experimental
/// low-display-latency A/B; see Stage2Pipeline's PresentPacing), or "stage1" (DEBUG-only
/// system-layer fallback). Resolved once per session by SessionPresenter;
/// PUNKTFUNK_PRESENTER=stage1|stage2|stage3 overrides it for A/B.
public static let presenter = "punktfunk.presenter"
/// macOS: V-Sync the stream's presents — each decoded frame flips on the next display vsync
/// (evenly paced, no tearing under direct scanout) instead of as soon as the GPU finishes
/// (lowest latency — the default, OFF). Resolved once per session;
/// PUNKTFUNK_PRESENT_MODE=immediate|vsync overrides it for A/B. See Stage2Pipeline's header.
public static let vsync = "punktfunk.vsync"
/// Allow variable refresh rate: hand the display link a wide frame-rate RANGE (low floor,
/// preferred = stream rate) so a ProMotion / adaptive-sync display can vary its physical
/// refresh to match the stream. On by default; a no-op on fixed-refresh displays. When off,
/// macOS lets the link free-run at the display's native rate and iOS keeps its proven 30 Hz
/// floor. Read per session/reconfigure by `SessionPresenter.syncFrameRate`.
public static let allowVRR = "punktfunk.allowVRR"
/// Request a 10-bit BT.2020 PQ (HDR10) stream. On by default; only takes effect when the host
/// has HDR content AND this display supports HDR — otherwise the stream stays 8-bit SDR.
public static let hdrEnabled = "punktfunk.hdrEnabled"
/// Request a full-chroma 4:4:4 stream when this device can HARDWARE-decode it (`Stage444Probe`).
/// On by default; only takes effect when the host also opted in to 4:4:4 (otherwise the stream
/// stays 4:2:0). Sharper text/UI at the cost of more bandwidth.
public static let enable444 = "punktfunk.enable444"
public static let hosts = "punktfunk.hosts"
/// Client-side cursor mode: "auto" (shown only in gamescope sessions), "always", "never".
public static let cursorMode = "punktfunk.cursorMode"
/// iPad: capture the mouse/trackpad pointer (pointer lock → relative movement) for games,
/// rather than forwarding an absolute cursor position. On by default. Only meaningful on iPad
/// with a hardware mouse/trackpad; the system grants the lock only to a full-screen, frontmost
/// scene and silently falls back to the absolute pointer when it can't (Stage Manager / Slide
/// Over). Read by `StreamViewController.prefersPointerLocked`.
public static let pointerCapture = "punktfunk.pointerCapture"
/// iPhone/iPad: how touchscreen fingers drive the host — a `TouchInputMode` raw value:
/// "trackpad" (default: relative cursor with tap-click / two-finger-scroll gestures),
/// "pointer" (the cursor jumps to the finger), or "touch" (real multi-touch passthrough).
/// Read live per gesture by `StreamLayerUIView`.
public static let touchMode = "punktfunk.touchMode"
/// Experimental: show the host's game library (browsed over the management API). Off by default.
public static let libraryEnabled = "punktfunk.libraryEnabled"
/// macOS: take the window fullscreen while streaming and restore it on the host list. On by default.
public static let fullscreenWhileStreaming = "punktfunk.fullscreenWhileStreaming"
/// LEGACY (pre-tiered overlay): the old boolean stats-overlay toggle. Kept ONLY as the
/// migration fallback `StatsVerbosity.current` reads when `statsVerbosity` was never
/// written (absent-or-true → .normal, explicit false → .off). Never written anymore.
public static let hudEnabled = "punktfunk.hudEnabled"
/// The statistics overlay tier — a `StatsVerbosity` raw value ("off"/"compact"/"normal"/
/// "detailed"). Absent → migrated from the legacy `hudEnabled` bool (see above). Cycle it
/// while streaming with ⌃⌥⇧S (the cross-client Ctrl+Alt+Shift+S; macOS / hardware
/// keyboard) or a three-finger tap (touch), matching the Android client.
public static let statsVerbosity = "punktfunk.statsVerbosity"
/// Which corner the statistics overlay sits in — a `HUDPlacement` raw value
/// ("topLeading"/"topTrailing"/"bottomLeading"/"bottomTrailing"). Default top-trailing.
public static let hudPlacement = "punktfunk.hudPlacement"
/// iOS/iPadOS/macOS: switch the host list, settings and game library to a controller-friendly
/// layout (the console launcher, gamepad-navigable settings, a coverflow-style library)
/// whenever a gamepad is connected. On by default; see `GamepadUIEnvironment.isActive`.
public static let gamepadUIEnabled = "punktfunk.gamepadUIEnabled"
/// iPhone: ALSO play the rumble the host addresses to controller 1 (wire pad 0) on this
/// device's own Taptic Engine — for phone-clip pads that ship without rumble motors, where
/// the phone body is the only actuator in the player's hands. Off by default (opt-in); read
/// once per session by `GamepadFeedback`. The toggle is shown only where the device actually
/// has a haptic actuator (no iPad/Mac/TV).
public static let rumbleOnDevice = "punktfunk.rumbleOnDevice"
/// Auto-wake on connect: when connecting to a saved host that isn't advertising on mDNS, fire
/// Wake-on-LAN and, if the dial fails, wait for it to come back before retrying (the "Waking…"
/// overlay). On by default. Turn off if a host that's already on just isn't seen on mDNS (a
/// routed/VPN host), so connects go straight through instead of waiting out the wake timeout.
/// The explicit "Wake Host" action stays available regardless. Read by ContentView.startSession.
public static let autoWake = "punktfunk.autoWake"
/// iOS/iPadOS: keep a streaming session ALIVE when the app is backgrounded (audio background
/// mode). Off by default (today's freeze-on-background is the default). When on, backgrounding a
/// live session keeps audio playing and the QUIC/pump live while DROPPING video decode, and a
/// bounded timer (`backgroundTimeoutMinutes`) auto-disconnects if the user doesn't return. Read
/// by ContentView's scenePhase driver. Hidden on tvOS/macOS.
public static let backgroundKeepAlive = "punktfunk.backgroundKeepAlive"
/// iOS/iPadOS: minutes a backgrounded keep-alive session runs before auto-disconnecting (a
/// battery/thermal/bandwidth backstop). Default 10; the UI offers 1/5/10/30. The auto-disconnect
/// is non-deliberate (host linger kept), so a late return reconnects fast. Read on enterBackground.
public static let backgroundTimeoutMinutes = "punktfunk.backgroundTimeoutMinutes"
}
extension Notification.Name {
/// Posted by the app's Stream menu ("Release Mouse", ⌃⌥⇧Q): the key window's stream view
/// releases input capture if it holds it. Only reachable while NOT captured (a captured
/// session swallows the combo in InputCapture's monitor and the frozen cursor can't click
/// menus) — it exists so the menu item is honest whenever it CAN fire, and as the shortcut's
/// discoverable menu-bar surface.
public static let punktfunkReleaseCapture = Notification.Name("io.unom.punktfunk.release-capture")
}