enricobuehler
99c3a47bbf
All five declarations move together (pf-encode twice — Linux and Windows —
plus pf-client-core, pf-zerocopy and punktfunk-host), because a split would
have compiled two copies of a crate whose whole job is holding a process-wide
dlopen handle.
No source changes. 0.9 replaces the concrete parameter types with sealed traits
— `Library::new(impl AsFilename)` and `Library::get(impl AsSymbolName)` — and
both cover what our 16 call sites already pass: `&str` literals for the sonames
(`libnvidia-encode.so.1`, `libva.so.2`, `libnvidia-ml.so.1`, `libcuda.so.1`) and
`&[u8; N]` NUL-terminated byte literals for the symbols, which 0.9 implements
explicitly alongside `&[u8]`. MSRV rises to 1.88; the workspace pins 1.96.
libloading 0.8 does not leave the lock, and shouldn't: what remains is
`clang-sys` under `bindgen`, reached only as a BUILD-dependency of
ffmpeg-sys-next / libspa-sys / pyrowave-sys. That copy runs at build time and is
linked into nothing we ship.
Verified on CachyOS (rustc 1.96.0):
cargo clippy --workspace --all-targets --locked -- -D warnings OK
cargo clippy -p pf-encode --all-targets --locked --features nvenc,vulkan-encode,pyrowave -- -D warnings OK
(the only leg that compiles enc/linux/nvenc_cuda.rs, where the `lib.get(b"…\0")` calls live)
cargo clippy -p punktfunk-host -p pf-encode -p pf-zerocopy -p pf-client-core --locked -- -D warnings OK (shipping build)
cargo test -p punktfunk-host --bins --locked 501 passed, 0 failed, 2 ignored
cargo test -p pf-encode --locked 33 passed, 5 ignored
cargo test -p pf-zerocopy --locked 40 passed
cargo fmt --all --check clean
40 lines
1.9 KiB
TOML
40 lines
1.9 KiB
TOML
# The Linux GPU zero-copy plumbing (plan §9 / §W6), extracted into a leaf crate so the shared
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# frame vocabulary (pf-frame `FramePayload::Cuda`), the encode backends (CUDA copies/context),
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# and the capture import machinery can all reach it WITHOUT the host orchestrator in between.
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# Content is Linux-only; the crate compiles to an empty lib elsewhere so dependents can carry a
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# plain (non-target-gated) dependency.
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[package]
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name = "pf-zerocopy"
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version.workspace = true
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edition.workspace = true
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# Inherit the workspace MSRV: clippy keys MSRV-gated lints off it (without this, e.g.
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# `manual_is_multiple_of` fires on code the host crate compiles clean).
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rust-version.workspace = true
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license = "MIT OR Apache-2.0"
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description = "punktfunk host Linux zero-copy GPU plumbing: CUDA context/buffers, EGL/Vulkan dmabuf import, the isolated import worker, and dmabuf implicit-fence sync."
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publish = false
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[target.'cfg(target_os = "linux")'.dependencies]
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anyhow = "1"
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tracing = "0.1"
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libc = "0.2"
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# `libcuda.so.1` is dlopen'd at runtime (NOT link-time) so one Linux binary runs on NVIDIA
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# (zero-copy via CUDA) AND on AMD/Intel (VAAPI, no NVIDIA driver present) — see `cuda::ffi`.
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libloading = "0.9"
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# EGL imports the PipeWire dmabuf, CUDA maps it (`dynamic` = load the NVIDIA libEGL at runtime).
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khronos-egl = { version = "6", features = ["dynamic"] }
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# Vulkan bridge for LINEAR dmabufs (gamescope): VK_EXT_external_memory_dma_buf import,
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# GPU-copy into an exportable allocation, export OPAQUE_FD → cuImportExternalMemory.
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ash = "0.38"
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# The isolated import worker's control protocol: small serde_json blobs over a Unix socket
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# (SCM_RIGHTS carries the fds; pixels never cross the socket).
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serde = { version = "1", features = ["derive"] }
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serde_json = "1"
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# Linux-only like the code under test: the render-node scan is exercised against a fixture tree.
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[target.'cfg(target_os = "linux")'.dev-dependencies]
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tempfile = "3"
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[lints]
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workspace = true
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