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daedalus-v4l2: 5d8b436 -> 77e14e5 — picks up #12 (LOW_DELAY) + #13 (daedalus-fourier linkage)

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Daemon-only bump (no daedalus-v4l2-dkms change needed; PROTO_VERSION
stays at 0).

#12 (LOW_DELAY half-measure): daemon sets AV_CODEC_FLAG_LOW_DELAY on
the H.264 AVCodecContext so libavcodec emits frames in decode order
~99% of the time (a few stragglers at GOP boundaries when the
stream's SPS num_reorder_frames overrides the flag).  Visible
improvement vs the 2-1-4-3 pair-swap on Firefox + mpv playback;
not the permanent fix — see daedalus-v4l2#11 for the architectural
plan to substitute daedalus-fourier kernels for libavcodec's
pixel math one cycle at a time.

#13 (daedalus-fourier linkage): daemon now pkg-config-links against
the daedalus-fourier kernel library (marfrit/daedalus-fourier) and
logs substrate availability at startup.  No kernels dispatched yet
— this is the build-time foundation for the substitution work.

build-deb.sh updated to fetch + build + install daedalus-fourier
(pinned at d87239d, marfrit/daedalus-fourier PR #1) into a per-
build temp prefix before invoking the daemon's cmake, exposing it
via PKG_CONFIG_PATH.  Static-linked, so the resulting .deb has no
new runtime deps.  Requires libvulkan-dev + glslang-tools on the
CI runner.

Arch PKGBUILD bumped to the same upstream commit but Arch packaging
for daedalus-fourier itself is a follow-up; until that lands the
Arch build expects daedalus-fourier installed by the user (AUR-style).
Debian-side is end-to-end self-contained via build-deb.sh.

Refs:
  * reauktion/daedalus-v4l2#12
  * reauktion/daedalus-v4l2#13
  * reauktion/daedalus-v4l2#11
  * marfrit/daedalus-fourier#1
This commit is contained in:
Claude (noether)
2026-05-21 18:39:22 +02:00
parent 736b6da176
commit c9a4b82f2c
3 changed files with 86 additions and 21 deletions
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debian/daedalus-v4l2/debian/changelog
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@@ -1,3 +1,34 @@
daedalus-v4l2 (0.1.0+r37+g77e14e5-1) bookworm trixie; urgency=medium
* Bump to 77e14e5 — picks up daedalus-v4l2 PRs #12 + #13.
* #12 (LOW_DELAY half-measure): the daemon now sets
AV_CODEC_FLAG_LOW_DELAY on the H.264 AVCodecContext so libavcodec
emits frames in decode order ~99% of the time (a few stragglers
at GOP boundaries when the stream's SPS num_reorder_frames
overrides the flag). Visible improvement vs the 2-1-4-3
pair-swap on Firefox YouTube + mpv playback; not a permanent
fix (see #11 for the architectural plan).
* #13 (daedalus-fourier linkage): the daemon now pkg-config-links
against the daedalus-fourier kernel library (marfrit/
daedalus-fourier) and logs substrate availability at startup.
No kernels dispatched yet — this is the build-time / link-time
foundation for the H.264 daemon-rewrite plan in #11
(substituting daedalus-fourier IDCT 4×4 / IDCT 8×8 / luma
deblock primitives for libavcodec's per-MB pixel math, one
cycle at a time, measuring CPU saved per substitution).
* Build-deb.sh now fetches + builds + installs daedalus-fourier
(pinned at d87239d, marfrit/daedalus-fourier PR #1) into a
per-build temp prefix, then builds the daemon with
PKG_CONFIG_PATH pointing at it. daedalus-fourier is
statically linked into the daemon binary, so the resulting
.deb has no new runtime deps. Requires libvulkan-dev +
glslang-tools on the CI runner (the daedalus-fourier benches
already needed those).
* Wire protocol unchanged — DAEDALUS_PROTO_VERSION stays at 0.
No daedalus-v4l2-dkms bump needed.
-- Markus Fritsche <mfritsche@reauktion.de> Thu, 21 May 2026 16:30:00 +0000
daedalus-v4l2 (0.1.0+r33+g5d8b436-1) bookworm trixie; urgency=medium
* Bump to 5d8b436 — reverts daedalus-v4l2 PRs #7 + #8 (the parking