fegger
ce52f64e52
Implement the xdg-desktop-portal ScreenCast backend via libportal: a
blocking portal handshake (interactive source picker), a PipeWire stream
on the portal's node enumerating BGRx/BGRA/RGBx/RGBA, and a latest-frame
slot handing frames to next_frame(). stop() is thread-safe; teardown
follows the order PipeWire requires. All proxy operations run under the
thread-loop lock to satisfy the protocol extension context checks
('impl_ext_end_proxy called from wrong context' otherwise).
The encoder now accepts padded strides for packed RGB inputs (real
PipeWire row pitches) and maps the new PixelFormat::Bgrx to
AV_PIX_FMT_BGRA.
Add tools/capture_smoke: a manual smoke tool (interactive, not in
meson test) that captures N frames, encodes them, and writes a
self-contained Annex-B elementary stream with prepended SPS/PPS.
Validated manually on Wayland/Hyprland: 2256x1504 H.264 elementary
stream, ffprobe clean. Phase 3 marked complete in docs/PHASES.md.
screen_cast
A native Linux peer-to-peer screencast application.
- Send your desktop or a window to another Linux machine.
- Receive a stream and render it in a window.
- Built with C++20, Meson, PipeWire, FFmpeg, RTP/UDP, and SDL.
This project is in early development. The H.264 codec path is implemented; capture, transport, and rendering are still in progress.
Quick start
Requirements:
- C++20 compiler (GCC 12+, Clang 16+)
- Meson >= 0.63
- Ninja
- FFmpeg development packages (
libavcodec,libavutil,libswscale) - (later phases) PipeWire dev, SDL2/3 dev
Build and run tests:
meson setup build
meson compile -C build
meson test -C build --print-errorlogs
Run with verbose test output:
meson test -C build -v
Architecture
See docs/ARCHITECTURE.md for module boundaries and design rules.
Roadmap
Development is split into phases in docs/PHASES.md.
Current phase: Phase 3 — PipeWire screen capture.
License
MIT — see LICENSE (to be added).