# Project Memory — screen_cast

Last updated: initial scaffold.

## Project state

- Empty project scaffolded with Meson build, C++20, module headers, and agent
  workflow files.
- No implementation yet; headers are placeholders.
- Phase plan is in `docs/PHASES.md`. Agents are now explicitly instructed in
  `AGENTS.md` to read `docs/PHASES.md` before planning and not to start work
  belonging to a later phase unless requested.

## Decisions

- Language: C++20 with explicit modern-C++ guidelines in `AGENTS.md` and
  `cpp-meson-build/SKILL.md`.
- Build system: Meson.
- Capture: PipeWire + xdg-desktop-portal.
- Encode/Decode: FFmpeg (libavcodec, libavutil, libswscale).
- Transport: RTP over UDP; signaling via WebSocket/JSON.
- Discovery: mDNS/Avahi.
- Rendering: SDL2 or SDL3 + OpenGL.
- Namespace: `sc`.

## Active blockers

None.

## Open questions

- GUI framework (Qt6 vs. none / CLI only) — deferred to later phase.
- Hardware acceleration strategy (VAAPI / Vulkan Video / NVENC) — evaluate after
  software encode path works.