spoopyghosty0 0ae754fa5d Live view: hardware H.264 encoder (fp_venc), x264 stays as fallback ...

native/venc/fp_venc: own clean-room driver of the Frame's iris encoder (V4L2 stateful encoder interface, written from
native/venc/SPEC.md = kernel docs + values measured on the Frame). Reads SteamVR's headset-view webcam, box-scales and
converts RGB24 to NV12 (NEON, bit-identical scalar reference), CBR H.264 with SPS/PPS on every IDR, one frame per slot
of an even fraction of the panel rate read through DRM (96 Hz -> 32 fps). stdin "k" = keyframe, EOF = stop;
--probe/--selftest. Static freestanding aarch64 binary in artifacts/linux-arm64-bin (reproducible).

livestream: the script probes fp_venc and pipes it into ffmpeg (-c:v copy + AAC), else the old x264 30 fps path; the
helper is synced to ~/.local/share/frameport/bin by sha256 at stream start (no agent change); a new viewer asks for a
keyframe and waits for it; the status line shows the encoder and fps. Tests: hardware/fallback script branches,
keyframe-on-join, helper sync; tests/test_venc.py compares convert.c with a Python reference (native marker).
Not yet run on the device.

2026-10-07 17:50:55 -04:00

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Live view: hardware H.264 encoder (fp_venc), x264 stays as fallback

2026-10-07 17:50:55 -04:00