Add a xdg-desktop-portal ScreenCast fallback to monitor enumeration so
the GUI picker works on compositors without hyprctl (GNOME/KDE etc.).
ListMonitors now tries hyprctl first, then creates a portal session,
selects monitor sources, starts capture and parses the stream list.
Verified on Hyprland: the portal path returns the 1920x1200 monitor,
confirming the compositor-agnostic mechanism works.
Enumerate monitors via hyprctl (Hyprland) and present them as a
dropdown in the settings window instead of a raw index. The picker is
enabled only for the screen source and persists the selected monitor as
stream_index. Falls back to a single indexed option when enumeration is
unavailable (non-Hyprland).
Capture the Wayland desktop via xdg-desktop-portal + PipeWire using
go2tv.app/screencast (MIT), and stream it to OBS:
- internal/capture: Capture/FrameSource/AudioSource interfaces and the
PipeWire backend (BGRA frames at monitor resolution, S16 48 kHz stereo
system audio)
- protocol: EncodeBGRA fast path producing 4:2:0 YCbCr JPEGs
- cmd: --source screen|pattern, --audio, --stream-index flags; real
capture feeds the existing sender
- share one wall-clock reference between the audio and video loops so
OBS receives aligned A/V timestamps (avoids multi-second latency)
Verified end-to-end: real desktop at 30 fps renders in OBS with
sub-second latency.
petere