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dailz d80b34f44f feat: GPU-downscale + software H.264 encode pipeline (WIP)

Add SwEncState in avhw.rs: GPU pipeline using scale_vaapi to downscale
4K BGRA -> 2K NV12 on AMD iGPU, then software encode with libopenh264.

- import_dma_buf_to_vaapi: av_hwframe_map based DMA-BUF import
- SwEncState: GPU filter graph (scale_vaapi) + NV12->YUV420P + libopenh264
- state_portal.rs: integrated SwEncState, auto DRM device detection
- vaapi_import_bench.rs: CPU vs GPU pipeline benchmark
- sw_encode_bench.rs: software encode benchmark

Benchmark results: GPU pipeline ~91 FPS theoretical (10.95ms/frame)
vs CPU pipeline ~33 FPS (30.21ms/frame).

Known issue: only 1 frame encoded in production recording,
diagnostic STATS logging added to debug frame flow.

2026-05-29 22:04:12 +08:00

.sisyphus/evidence

chore: add .sisyphus/ to .gitignore, remove committed BUGS.md

2026-05-25 08:56:21 +08:00

docs/superpowers

fix: resolve 4 audit bugs (PTS, WlOutput, first_frame, DRM minor)

2026-04-06 16:25:02 +08:00

examples

fix(backend_detect): use raw zbus for portal check to avoid OnceLock connection poisoning

2026-05-27 22:07:11 +08:00

src

feat: GPU-downscale + software H.264 encode pipeline (WIP)

2026-05-29 22:04:12 +08:00

tests

feat: add KWin/KDE Plasma screen capture via xdg-desktop-portal ScreenCast + PipeWire

2026-05-11 08:49:08 +08:00

.gitignore

chore: add .sisyphus/ to .gitignore, remove committed BUGS.md

2026-05-25 08:56:21 +08:00

analysis.md

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

build.rs

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

Cargo.lock

fix(backend_detect): use raw zbus for portal check to avoid OnceLock connection poisoning

2026-05-27 22:07:11 +08:00

Cargo.toml

fix(backend_detect): use raw zbus for portal check to avoid OnceLock connection poisoning

2026-05-27 22:07:11 +08:00

README.md

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

shell.nix

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

README.md

wl-webrtc

Wayland screen capture and encoding tool.

Prerequisites

Rust toolchain (1.70+): rustup default stable
FFmpeg 6.0+ dev libraries with VAAPI support:
- Arch: pacman -S ffmpeg
- Ubuntu/Debian: apt install libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libva-dev
- Fedora: dnf install ffmpeg-devel libva-devel
Wayland dev libraries:
- Arch: pacman -S wayland-protocols
- Ubuntu/Debian: apt install libwayland-dev wayland-protocols
- Fedora: dnf install wayland-devel wayland-protocols-devel
DRM dev libraries:
- Arch: pacman -S libdrm
- Ubuntu/Debian: apt install libdrm-dev
- Fedora: dnf install libdrm-devel

Build

cargo build --release

Run

# Basic capture to file
wl-webrtc --output output.mp4

# With custom FPS and bitrate
wl-webrtc --output output.mp4 --fps 60 --bitrate 8000000

# Specify DRM device for hardware encoding
wl-webrtc --output output.mp4 --drm-device /dev/dri/renderD128

# Verbose mode
wl-webrtc --output output.mp4 -v

CLI Arguments

Argument	Default	Description
`-o`, `--output`	(required)	Output file path (e.g., output.mp4)
`--output-name`	auto	Wayland output name to capture
`--fps`	30	Target frames per second
`--codec`	h264	Video codec (h264 only for MVP)
`--hw-accel`	vaapi	Hardware acceleration method
`--drm-device`	auto	DRM render device path
`--bitrate`	auto	Target bitrate in bps
`--gop-size`	auto	Group of Pictures size
`-v`, `--verbose`	false	Enable verbose logging
`--port`	0	WebTransport server port (unused in MVP)