Lock-step downgrade of both packages to the revert tip of
daedalus-v4l2 (PR #10 closed PRs #7 + #8). After
0.1.0+r28+g79256dc-1 / 0.1.0+r30+g6ffe92b-1 landed in production,
mpv (--hwdec=vaapi-copy) failed pre-playing with "Unable to dequeue
buffer: Resource temporarily unavailable" because the daemon
parked CAPTURE buffers waiting for libavcodec's display-order
reorder, violating libva's V4L2 stateless 1:1 contract. See
daedalus-v4l2#9 for the diagnostic, #10 for the revert PR.
DAEDALUS_PROTO_VERSION drops 1 → 0; install both .debs in the same
apt transaction. Userspace ABI returns to the f0d4186-equivalent
behaviour, plus PR #4 (cosmetic H.264 menu controls). The
daedalus-v4l2-dkms #64 multi-kernel postinst behaviour stays in
build-deb.sh.
Visible regression: H.264 B-frame streams in Firefox return to the
"2 1 4 3 6 5" pair-swap visual. Proper fix (concurrent in-flight
requests in daemon + display-order reorder moved into libva-v4l2-
request-fourier) tracked at daedalus-v4l2#11.
Refs:
* reauktion/daedalus-v4l2#9
* reauktion/daedalus-v4l2#10 (merged)
* reauktion/daedalus-v4l2#11
Lock-step bump of both packages to daedalus-v4l2#7 + #4. PROTO_VERSION
bumps 0 → 1 at the daemon ↔ kernel chardev wire: REQ_DECODE adds
__u64 src_pts (the OUTPUT vb2 timestamp); RESP_FRAME adds __u32 flags
(HAS_PIXELS / SRC_CONSUMED) + __u64 output_src_pts (= frame->pts on
drain). Both .debs must be installed atomically or the chardev
handshake rejects the version mismatch.
* daedalus-v4l2: daemon's send_packet → receive_frame loop now
stamps pkt->pts = req->src_pts and looks up the cookie for each
drained frame via frame->pts. chardev_client emits multiple
RESP_FRAME messages per REQ_DECODE when libavcodec's display-
order DPB releases an earlier frame on receipt of a later
bitstream — fixes the "2 1 4 3 6 5" pair-swap on H.264 streams
with B-frames.
* daedalus-v4l2-dkms: kernel device_run mirrors src_buf timestamp
into REQ_DECODE.src_pts. Completion path splits HAS_PIXELS /
SRC_CONSUMED: src is released as soon as send_packet succeeds
(so the m2m scheduler moves on), dst stays parked until the
matching frame is drained later. TIMESTAMP_COPY's auto src→dst
pairing no longer applies once lifecycles decouple — dst is
stamped explicitly from inflight->src_pts at HAS_PIXELS time.
* daedalus-v4l2-dkms also carries forward the -2 multi-kernel
postinst fix (#64) from the prior PKGREL. PKGREL resets to 1 on
the new upstream pin.
The daedalus-v4l2#4 H.264 DECODE_MODE + START_CODE menu controls (a
cosmetic warning fix that PR landed alongside #7) is also subsumed —
"Unable to set control(s) error_idx=2/2" no longer fires.
Refs:
* reauktion/daedalus-v4l2#7
* reauktion/daedalus-v4l2#4
* reauktion/daedalus-v4l2#6
Upstream PR #3 — kernel per-context vb2_queue lock so concurrent
clients of /dev/video0 don't serialise on a device-wide mutex.
Pi 5 Firefox VAAPI playback (RDD + content + GPU processes each
opening the device) now works without S_FMT EBUSY collisions.
Verified on higgs: YouTube playback engages daedalus at sustained
~230 fps decode through the libavcodec dlopen path, ~7× headroom
over the 30fps@1080p Pi 5 Fourier target.
Both packages: pkgver 0.1.0.r24.f0d4186, pkgrel reset to 1.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Upstream PR #2 landed the one-line kernel fix that was the missing
half of issue libva-v4l2-request-fourier#8: device_run now calls
v4l2_ctrl_request_setup() before reading ctrl->p_cur, so the
daedalus_h264_meta the daemon receives reflects the in-flight
media_request's bound H.264 stateless control values instead of
stale/default ones.
Pairs with libva-v4l2-request-fourier 1.0.0+r382+gc1bb444 (max_num_
ref_frames fallback + Fix 4 instrumentation that exposed the
control-binding gap in the first place).
Effect on Pi 5 / CM5 hosts (higgs): ffmpeg -hwaccel vaapi against
H.264 sources now produces actual decoded content (per-frame
fnv1a hashes differ, zero MB-decode errors) instead of the
constant 0x6a6a05c5 "best-effort give-up" hash and cascading
decode warnings.
Both packages: pkgver 0.1.0.r22.462aa4b, pkgrel reset to 1.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Upstream PR #1 landed daemon-side synthesis of H.264 SPS/PPS NAL
units from the V4L2 stateless control structs. This bumps the
package pin so both the userspace daemon and the kernel module
pick up the change in lockstep (wire protocol grew a new
DAEDALUS_REQ_FLAG_H264_META bit + struct daedalus_h264_meta —
kernel and daemon MUST match).
Effect on Pi 5 / CM5 hosts (higgs): ffmpeg -hwaccel vaapi against
H.264 sources will actually decode through the daedalus daemon
instead of failing with "non-existing PPS 0 referenced".
Both arch + debian packages: pkgver 0.1.0.r20.3dd0eb0 (count from
git rev-list), pkgrel reset to 1 (new upstream pin).
VP9 / AV1 paths unchanged.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
481279c adds packaging/systemd/{daedalus-v4l2.service,modules-load} to
the upstream tree. This commit wires those into both the Arch
(PKGBUILD + .install) and Debian (build-deb.sh + postinst/prerm/postrm)
package layouts so that a fresh install of daedalus-v4l2 + daedalus-
v4l2-dkms on a Pi 5 leaves the kernel module loaded at next boot AND
the userspace broker daemon enabled — no manual modprobe / systemctl
enable dance needed.
arch/daedalus-v4l2:
* pkgver 0.1.0.r18.481279c, pkgrel reset to 1 (new upstream pin).
* Dropped 'systemd-libs' from depends — daemon doesn't link
libsystemd (no sd_notify); the .service unit is consumed by
systemd-the-init, no link-time dep required.
* package() now installs the .service to
/usr/lib/systemd/system/daedalus-v4l2.service and the modules-
load drop-in to /usr/lib/modules-load.d/daedalus-v4l2.conf.
* New .install file: post_install/post_upgrade run daemon-reload +
enable + systemd-modules-load + try-restart on upgrade; pre/post
remove tear down cleanly. No auto-start — operator decides.
arch/daedalus-v4l2-dkms:
* pkgver bump to 481279c, pkgrel reset to 1. Kernel module itself
is bit-identical to f0cd29a (commit only touches packaging/) but
bumping in lockstep keeps DKMS source-tree pkgver matched to the
userspace pkgver so /etc/modules-load.d points at a module that
actually exists.
debian/daedalus-v4l2:
* Same bump 481279c, PKGREL=1.
* build-deb.sh stages /lib/systemd/system/ + /usr/lib/modules-load.d/
and installs both files.
* Generates DEBIAN/postinst that runs daemon-reload, enables the
service, triggers systemd-modules-load, and conditionally starts
the service iff /dev/daedalus-v4l2 is already present (uses the
same ConditionPathExists= guard as the unit file so apt install
doesn't fail loudly on a host where dkms hasn't built yet).
* Generates DEBIAN/prerm (stop + disable on remove) and
DEBIAN/postrm (daemon-reload).
debian/daedalus-v4l2-dkms:
* Lockstep version bump, PKGREL=1. Postinst (loud-warn-on-missing-
headers) unchanged.
Verified the SHA via local rev-parse against ~/src/daedalus-v4l2 —
481279c is the "packaging/systemd: ship daedalus-v4l2.service +
modules-load drop-in" commit on main.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
DKMS build for daedalus_v4l2 fails against kernel 6.18+ with:
daedalus_v4l2_main.c:1049: error: too few arguments to function
'v4l2_fh_add'
v4l2-fh.h:97: void v4l2_fh_add(struct v4l2_fh *fh, struct file *filp);
(same for v4l2_fh_del). Signature changed exactly at v6.18 — verified
v6.13–v6.17 still use the one-arg form via raw.githubusercontent.com
tag walk.
Upstream commit f0cd29a wraps the calls with LINUX_VERSION_CODE so the
module keeps building against:
* 6.12 LTS / RPi 6.12.75 (one-arg) — hertz
* 6.12.88+deb13-arm64 (one-arg)
* 6.18.29+rpt-rpi-2712 (file* arg) — higgs running kernel
Higgs (Pi CM5) was hitting this: daedalus-v4l2-dkms 0.1.0+r16+gf55b2cd
showed 'installed' in dpkg but DKMS autoinstall failed for the running
6.18.29 kernel. Re-running 'dkms autoinstall' after this bump succeeds
+ /dev/daedalus-v4l2 appears.
Also widens debian/daedalus-v4l2-dkms Recommends from
linux-headers-generic | linux-headers
to
linux-headers-rpi-2712 | linux-headers-rpi | linux-headers-generic | linux-headers
so apt pulls the right metapackage on Raspberry Pi OS / RPi-2712
kernels by default.
Userspace pkgver bumps in lockstep (no userspace change in f0cd29a, but
keeps daedalus-v4l2 + daedalus-v4l2-dkms versions matching for
LIBVA_DRIVER_NAME selection sanity).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The recipes pinned `f55b2cdab8a8c0bc04e8c1bb1d0b6ca85e7d96d2` as the
"Phase 8.13: byte-exact end-to-end via libva" commit, but that SHA
does not exist in git.reauktion.de/reauktion/daedalus-v4l2.
The actual `main` tip (per gitea's for-each-ref) is
`f55b2cd002afdfd08f3c093627317f92e4929074` — same 7-char prefix
(`f55b2cd`), different full hash. Likely a manually-constructed SHA
based on a short prefix from a working copy that was never pushed.
git archive --format=tar.gz on the bad SHA fails with
fatal: not a tree object: f55b2cdab8a8...
which surfaces as 500 from Gitea's archive endpoint, which curl in
the CI build-deb.sh sees as `curl: (22) ... error: 500`.
Diagnosed by tailing gitea.log during a fresh archive request from
the CI runner; the underlying `git archive` command in the gitea
container is logged with the full failing SHA + error.
Fixed in all four recipes (arch + debian, daedalus-v4l2 + dkms).
pkgrel bumped to signal new build (PKGVER short-prefix `gf55b2cd`
stays the same — both bad and good SHA share that prefix).
Bumps all 4 daedalus packages (arch + debian × userspace + dkms)
to pick up daedalus-v4l2 f55b2cd: "kernel: media_request_get/put
around inf->req (UAF safety)".
Closes the SHIP-WITH-EYES-OPEN concern Sonnet flagged in the
pre-deployment review — without explicit media_request_get on
capture + media_request_put on completion, a concurrent
MEDIA_IOC_REQUEST_REINIT or process-kill triggering
buf_request_complete from the cancel path could drop vb2's
reference before our completion handler ran, leaving inf->req
dangling through v4l2_ctrl_request_complete + buf_done.
Matches the cedrus / rkvdec refcount pattern. No protocol
change, no API change, no consumer-side adjustment required.
Same byte-exact output verified on hertz post-fix (libva path:
match; standalone test_m2m_stream: 30/30 frames).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
claude-noether
marfrit
test0r