All three Windows backends derived it the same wrong way —
`bit_depth >= 10 || matches!(format, P010 | Rgb10a2)` at ffmpeg_win.rs:154,
amf.rs:1275 and qsv.rs:777 — so the NEGOTIATED depth could force a 10-bit encoder
over an 8-bit capture.
That combination is not hypothetical. A client advertises 10-bit, the handshake
negotiates bit_depth=10, and then enabling advanced colour on the IDD virtual
display fails — at which point the capturer says exactly that and delivers 8-bit
NV12 anyway ("10-bit HDR was negotiated but enabling advanced color on the virtual
display FAILED — encoding 8-bit SDR"). Every vendor then lost the session, each in
its own way:
- native AMF and native QSV derived `expected = P010`, saw Nv12, and bail!'d at
open;
- the libavcodec path accepted the open, built a P010 encoder, and then failed
EVERY submit forever, because its per-frame check recomputes the depth from the
frame and never matches. reset() could not help: the rebuild re-derived the
same wrong depth from the same stored bit_depth. The host burned
MAX_ENCODER_RESETS and ended the session.
The last one is the worst of the three because it IS the fallback: native QSV
correctly refuses this input at open, and lib.rs then falls back to the ffmpeg path
"for robustness" — which accepted it and died per frame instead.
Since the duplication was the bug, the fix is one shared `ten_bit_input()` in
codec.rs that all three call, and it follows the delivered pixels. That also keeps
the stream HONEST rather than merely alive: the depth selects the colour signalling
(BT.2020 PQ vs BT.709) and the staging surface format, so an 8-bit capture now
produces an 8-bit stream that says it is SDR — which is what the capturer already
reported it was sending. It warns when the negotiated depth is discarded.
The negotiated depth stays an upper bound. The session LABEL may still claim HDR;
that mismatch lives in the negotiation, not in the encoder, and is not addressed
here.
`is_10bit_format` keeps its (now format-only) definition and is used by
submit_d3d11's per-frame check, so the predicate the encoder was built from and the
one it re-checks per frame cannot drift. That check can now only fire on a genuine
mid-stream depth change.
Verified `--all-targets -D warnings` on Windows (no features / pyrowave / qsv /
nvenc,qsv; 31 tests) and Linux (default; shipped nvenc+vulkan-encode+pyrowave).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The GNOME 50 HDR work added PixelFormat::X2Rgb10 / X2Bgr10 but only taught the
Linux encoders about them. `sws_src` in the Windows-gated ffmpeg_win.rs matches
PixelFormat exhaustively, so the Windows host stopped compiling:
error[E0004]: non-exhaustive patterns: `X2Rgb10` and `X2Bgr10` not covered
--> crates\pf-encode\src\enc\windows\ffmpeg_win.rs:132:14
Linux CI never caught it — the file is cfg(windows), so `cargo clippy
--workspace` on the Linux runner never compiles it.
Both are Linux-only screencast formats (the Windows HDR path stays
Rgb10a2/P010, per the PixelFormat docs), so they join the existing bail arm.
Spelled out rather than folded into a `_` catch-all so the next PixelFormat
addition breaks this match again on purpose.
Verified: cargo check --workspace --all-targets --features nvenc,amf-qsv on the
Windows box (192.168.1.173).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
encode.rs + encode/* (NVENC, VAAPI, native AMF, AMF/QSV ffmpeg, direct-SDK
NVENC/CUDA, raw Vulkan-Video, PyroWave, openh264) move into crates/pf-encode
behind one Encoder trait + open_video selector (plan §W6). The crate speaks the
shared frame vocabulary (pf-frame: CapturedFrame/PixelFormat + the DXGI identity
D3d11Frame/make_device) and pf-zerocopy (CUDA context/buffers), and NEVER
pf-capture — the capture→encode edge is one-way (ZeroCopyPolicy, prior commit).
Dep moves: the heavy encoder deps (ffmpeg-next, the NVENC SDK, openh264,
pyrowave-sys) move from the host to pf-encode; the host's
nvenc/amf-qsv/vulkan-encode/pyrowave features now FORWARD to pf-encode/*. The
host keeps a mod-encode shim (pub use pf_encode) so every crate::encode::* path
(negotiator + GameStream/native/mgmt planes) is unchanged.
resolve_render_adapter_luid moves from the host's windows/win_adapter.rs into
pf-gpu (both pf-encode and pf-capture need it as a peer of GPU selection); its 5
call sites (encode amf/nvenc, capture idd_push/synthetic_nv12, vdisplay manager)
rewire to pf_gpu::resolve_render_adapter_luid and win_adapter.rs is deleted.
pf-frame's make_device gains a # Safety section (public-unsafe-fn lint, latent
since the pf-frame carve — a full-workspace -D warnings clippy catches it).
Verified: Linux clippy -D warnings (pf-encode + host nvenc,vulkan-encode,pyrowave
--all-targets) + 13/13 pf-encode + 299/299 host tests; Windows clippy -D warnings
(pf-encode nvenc,amf-qsv --all-targets + host nvenc,amf-qsv --all-targets)
Finished exit 0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehlerandClaude Opus 5