fegger
10870bc6c9
Wire the first end-to-end pipeline: capture -> encode -> packetize -> UDP -> depacketize -> decode -> render. - UdpRtpTransport: raw POSIX UDP sockets (IPv4 via getaddrinfo), a receive jthread woken by socket close on stop; port 0 skips binding so the sender uses an OS-assigned source port. ASIO stays deferred to the signaling phase per ARCHITECTURE.md. - SdlRenderer: SDL3 window/renderer with RGBA texture upload; the texture is recreated on resolution change. RendererFactory now returns RendererResult so SDL init failures carry a message, mirroring the codec/capture error patterns. - screencast binary: parse_cli plus SenderPipeline/ReceiverPipeline per the app scaffolds; the sender creates its encoder once capture reports real dimensions, the receiver keeps a bounded 3-frame queue to hold latency down and renders on its own thread until the window closes. cli argv signature fixed to 'const char* const*' so main's argv converts implicitly. - Encoder: drop AV_CODEC_FLAG_GLOBAL_HEADER so libx264 repeats SPS/PPS in-band at each keyframe -- the receiver decodes from the bitstream alone, which also makes mid-stream joins and later PLI recovery work without out-of-band parameter negotiation. The round-trip test now exercises exactly that path. - tests: new udp-loopback integration test pushes synthetic frames through a real localhost socket and decodes 10/10 frames with the right dimensions; valgrind clean (loopback + codec). meson test 4/4. Manual validation on the desktop (receiver window shows the captured desktop) is documented in docs/RUNBOOK.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).