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  In-app audio device picker (controller-driven)

  LastSkywalker released this 2026-05-31 09:07:39 +03:00

  The shell mode was missing a way to switch the default audio device from
  a controller — the only path was the Settings button that popped open
  the Windows "Параметры → Звук" page, mouse-only and outside the
  fullscreen shell. Same gap the monitor picker closed earlier.

  internal/audio (Windows-only, no CGO):

  • enumerates active render+capture endpoints via the documented MMDevice
    API (IMMDeviceEnumerator, IPropertyStore, PKEY_Device_FriendlyName);
  • switches the default via undocumented IPolicyConfigVista
    (CLSID 870af99c-..., IID 568b9108-..., SetDefaultEndpoint at vtable
    slot 12 — same interface SoundSwitch, NirSoft, AHK scripts have used
    for ~15 years; stable across Vista→Win11);
  • hand-rolled vtable dispatch via syscall.SyscallN, CoInitializeEx(MTA)
    • LockOSThread per call. Same pattern as internal/display.
  • SetDefault flips Console + Multimedia roles (what the Windows "Set
    Default" button does); Communications role left alone.

  AudioPicker (frontend):

  • two columns (output / input), pre-selects current default per column;
  • controller bindings mirror MonitorPicker: ↑↓ within column,
    ←→/LB/RB swap columns, A applies, B/Esc closes; same for keyboard.

  Wired into three surfaces:

  • Settings page: replaces "Открыть «Параметры → Звук»" button with the
    inline picker (system shortcut kept as a fallback sibling button);
  • 🎧 corner icon next to 🖥 monitor switch in shell mode;
  • one-shot auto-chain on shell startup: after MonitorPicker.onDone fires
    for the first time (or if the picker was skipped because there's only
    one display) the AudioPicker opens once. Guard via useRef so
    re-picking a monitor mid-session does not drag audio back open.

  inputBlocked in ShellApp now also gates on audioOpen so the carousel
  behind the picker doesn't double-handle d-pad/A.

  ADR: .claude/decisions/0023-in-app-audio-device-picker.md.

  Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

  Downloads

  • Source Code (ZIP)
  • Source Code (TAR.GZ)