826f544569
Split synchronous encode pipeline so sws_scale + libx264 runs on a dedicated thread, leaving only VAAPI import + GPU scale + GPU→CPU transfer on the main capture thread. Problem: encode_p95 occasionally hit 74ms, blocking the entire capture pipeline and causing capture_gap_max=356ms stutter. Solution: - avhw.rs: Split SwEncState into SwEncImport (main thread: VAAPI import, filter_graph scale, GPU→CPU transfer) and SwEncEncode (encode thread: sws_scale NV12→YUV420P, libx264 encode). New CpuNv12Frame struct carries owned pixel data across threads via crossbeam channel. SwEncState wraps both for backward compat (MP4/sync path untouched). - state_portal.rs: WebRTC portal path spawns 'wl-webrtc-encode' thread with bounded(2) input channel (drop-newest backpressure) and separate timing channel. Graceful shutdown: drop webrtc_rx → drop input_tx → join encode thread → flush sync encoder. - stats.rs: Add record_import() + record_encode_thread() for async timing. Results: encode_p95 stable at 2.9-4.2ms (was 11-74ms), capture_fps stable 59-60fps, cap_gap_p95 17-19ms. Remaining capture stalls traced to PipeWire compositor frame delivery (external, not our code).
37 lines
1.0 KiB
TOML
37 lines
1.0 KiB
TOML
[package]
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name = "wl-webrtc"
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version = "0.1.0"
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edition = "2021"
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description = "Wayland screen capture and encoding tool"
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[dependencies]
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wayland-client = "0.31"
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wayland-protocols = { version = "0.32", features = ["client", "unstable"] }
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wayland-protocols-wlr = { version = "0.3", features = ["client"] }
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ffmpeg-next = "8"
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mio = { version = "1.0", features = ["os-poll", "os-ext"] }
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signal-hook = "0.3"
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signal-hook-mio = { version = "0.2", features = ["support-v1_0"] }
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clap = { version = "4", features = ["derive"] }
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tracing = "0.1"
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tracing-subscriber = { version = "0.3", features = ["env-filter"] }
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anyhow = "1"
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drm = "0.12"
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drm-fourcc = "2"
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libc = "0.2"
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ashpd = { version = "0.13", features = ["tokio", "screencast"] }
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zbus = { version = "5", default-features = false, features = ["tokio"] }
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tokio = { version = "1", features = ["rt"] }
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pipewire = { version = "0.9", features = ["v0_3_45"] }
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libspa = "0.9"
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crossbeam-channel = "0.5"
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str0m = "0.20"
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serde_json = "1"
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dirs = "6"
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[dev-dependencies]
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tempfile = "3.27.0"
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[lints.clippy]
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undocumented_unsafe_blocks = "warn"
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