marfrit
df09c1c55d
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>
182 lines
6.5 KiB
Bash
Executable File
182 lines
6.5 KiB
Bash
Executable File
#!/bin/bash
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# Build daedalus-v4l2_<ver>_arm64.deb (userspace daemon + test tools).
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#
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# Mirrors arch/daedalus-v4l2 (Arch Linux build). The companion DKMS
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# package (debian/daedalus-v4l2-dkms) carries the kernel module
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# separately so apt/dpkg can split kernel-version-tied and userspace
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# upgrade cadence.
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#
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# Sibling Arch package: ../../arch/daedalus-v4l2/PKGBUILD
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# Sibling DKMS package: ../daedalus-v4l2-dkms/build-deb.sh
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# Upstream repo: https://git.reauktion.de/reauktion/daedalus-v4l2
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set -euo pipefail
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# Same pin as the Arch PKGBUILD. 481279c = "Phase 8.13: byte-exact
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# end-to-end via libva (consumer target hit)" — first commit where the
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# full ffmpeg -hwaccel vaapi → libva → /dev/video0 → daemon path lands
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# a pixel-correct decoded frame back in ffmpeg.
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UPSTREAM_COMMIT=481279c9bffd19e32c8f3299897e9b63fc5a24aa
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PKGVER=0.1.0+r18+g481279c
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PKGREL=1 # reset for new upstream pin (481279c — Phase 8.13 close)
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HERE=$(dirname "$(readlink -f "$0")")
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# Reproducible build. 2026-05-18 23:00 UTC — Phase 8.13 close.
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export SOURCE_DATE_EPOCH=1779231600
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work=$(mktemp -d)
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trap "rm -rf $work" EXIT
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cd "$work"
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curl -sSLfo daedalus-v4l2.tar.gz \
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"https://git.reauktion.de/reauktion/daedalus-v4l2/archive/${UPSTREAM_COMMIT}.tar.gz"
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tar xzf daedalus-v4l2.tar.gz
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SRCDIR=daedalus-v4l2
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# Build daemon (CMake)
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cd "$SRCDIR/daemon"
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cmake -B build -G Ninja \
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-DCMAKE_BUILD_TYPE=Release \
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-DCMAKE_INSTALL_PREFIX=/usr
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cmake --build build
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# Build test tools (in-tree Makefile)
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cd "$work/$SRCDIR/tools"
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make
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# Stage
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ROOT="$work/pkgroot"
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mkdir -p "$ROOT/DEBIAN" \
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"$ROOT/usr/bin" \
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"$ROOT/usr/libexec/daedalus-v4l2" \
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"$ROOT/usr/include" \
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"$ROOT/usr/share/doc/daedalus-v4l2" \
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"$ROOT/lib/systemd/system" \
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"$ROOT/usr/lib/modules-load.d"
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install -m 755 "$work/$SRCDIR/daemon/build/daedalus_v4l2_daemon" \
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"$ROOT/usr/bin/daedalus_v4l2_daemon"
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install -m 755 "$work/$SRCDIR/tools/test_chardev_pingpong" \
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"$ROOT/usr/libexec/daedalus-v4l2/test_chardev_pingpong"
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install -m 755 "$work/$SRCDIR/tools/test_m2m_decode" \
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"$ROOT/usr/libexec/daedalus-v4l2/test_m2m_decode"
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install -m 755 "$work/$SRCDIR/tools/test_m2m_stream" \
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"$ROOT/usr/libexec/daedalus-v4l2/test_m2m_stream"
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install -m 644 "$work/$SRCDIR/include/daedalus_v4l2_proto.h" \
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"$ROOT/usr/include/daedalus_v4l2_proto.h"
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# systemd unit + module autoload — without these the daemon never
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# starts and the libva/VAAPI consumer's REQ_DECODE has nobody on
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# the other end of /dev/daedalus-v4l2.
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install -m 644 "$work/$SRCDIR/packaging/systemd/daedalus-v4l2.service" \
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"$ROOT/lib/systemd/system/daedalus-v4l2.service"
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install -m 644 "$work/$SRCDIR/packaging/systemd/daedalus-v4l2.modules-load" \
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"$ROOT/usr/lib/modules-load.d/daedalus-v4l2.conf"
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install -m 644 "$work/$SRCDIR/README.md" \
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"$ROOT/usr/share/doc/daedalus-v4l2/README.md"
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for d in "$work/$SRCDIR/docs/"*.md; do
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install -m 644 "$d" "$ROOT/usr/share/doc/daedalus-v4l2/$(basename "$d")"
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done
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install -Dm644 "$HERE/debian/copyright" "$ROOT/usr/share/doc/daedalus-v4l2/copyright"
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install -Dm644 "$HERE/debian/changelog" "$ROOT/usr/share/doc/daedalus-v4l2/changelog.Debian"
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gzip -9 -n "$ROOT/usr/share/doc/daedalus-v4l2/changelog.Debian"
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# DEBIAN/postinst — enable service + reload modules-load.d so the
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# kernel module loads now if daedalus-v4l2-dkms is also installed.
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# Does NOT auto-start the service — that requires /dev/daedalus-v4l2
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# to already exist (the ConditionPathExists= in the .service file)
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# which may not be true on the very first install before the user
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# reboots or manually modprobes. Operator decides when to start.
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cat > "$ROOT/DEBIAN/postinst" <<'POSTINST'
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#!/bin/sh
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set -e
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if [ "$1" = "configure" ]; then
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# Reload systemd so the new unit file is visible.
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if command -v systemctl >/dev/null 2>&1; then
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systemctl daemon-reload >/dev/null 2>&1 || true
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systemctl enable daedalus-v4l2.service >/dev/null 2>&1 || true
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fi
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# Trigger /usr/lib/modules-load.d/daedalus-v4l2.conf without a
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# reboot. Harmless if the module is already loaded; logs to
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# journal if it can't load (most common cause: dkms hasn't built
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# the module yet for the running kernel — see daedalus-v4l2-dkms
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# postinst for the loud-warning path).
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if command -v systemd-modules-load >/dev/null 2>&1; then
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systemd-modules-load >/dev/null 2>&1 || true
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fi
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# Auto-start if /dev/daedalus-v4l2 came up (i.e. module loaded
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# successfully). ConditionPathExists in the unit file means
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# `systemctl start` is a no-op if the device isn't there yet —
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# avoids spurious failures during apt install on a host where
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# daedalus-v4l2-dkms hasn't built yet.
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if [ -e /dev/daedalus-v4l2 ] && command -v systemctl >/dev/null 2>&1; then
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systemctl start daedalus-v4l2.service >/dev/null 2>&1 || true
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fi
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fi
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#DEBHELPER#
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POSTINST
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chmod 755 "$ROOT/DEBIAN/postinst"
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cat > "$ROOT/DEBIAN/prerm" <<'PRERM'
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#!/bin/sh
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set -e
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if [ "$1" = "remove" ] && command -v systemctl >/dev/null 2>&1; then
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systemctl stop daedalus-v4l2.service >/dev/null 2>&1 || true
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systemctl disable daedalus-v4l2.service >/dev/null 2>&1 || true
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fi
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#DEBHELPER#
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PRERM
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chmod 755 "$ROOT/DEBIAN/prerm"
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cat > "$ROOT/DEBIAN/postrm" <<'POSTRM'
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#!/bin/sh
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set -e
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if command -v systemctl >/dev/null 2>&1; then
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systemctl daemon-reload >/dev/null 2>&1 || true
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fi
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#DEBHELPER#
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POSTRM
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chmod 755 "$ROOT/DEBIAN/postrm"
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cat > "$ROOT/DEBIAN/control" <<EOF
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Package: daedalus-v4l2
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Version: ${PKGVER}-${PKGREL}
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Section: video
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Priority: optional
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Architecture: arm64
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Depends: ffmpeg-v4l2-request-fourier (>= 2:8.1+rfourier), libdrm2
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Recommends: daedalus-v4l2-dkms
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Maintainer: Markus Fritsche <mfritsche@reauktion.de>
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Homepage: https://git.reauktion.de/reauktion/daedalus-v4l2
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Description: Userspace daemon for the daedalus_v4l2 stateless decoder shim
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daedalus-v4l2 ships the userspace daemon that backs the daedalus_v4l2
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out-of-tree V4L2 kernel module on Raspberry Pi 5 / CM5. Together they
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expose /dev/videoNN + /dev/mediaNN as a V4L2 stateless decoder for
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VP9, AV1, and H.264 — actual decoding happens in this single-threaded
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daemon via dlopen'd FFmpeg, with decoded NV12 / P010 frames shipped
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back through dmabuf.
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.
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Consumed end-to-end by libva-v4l2-request-fourier (>= 1.0.0+r376) so
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that 'ffmpeg -hwaccel vaapi' against vp9_small.ivf produces a
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byte-exact NV12 frame.
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.
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The kernel module ships separately in daedalus-v4l2-dkms; install
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both to actually serve V4L2 clients.
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EOF
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DEB_OUT="daedalus-v4l2_${PKGVER}-${PKGREL}_arm64.deb"
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dpkg-deb --root-owner-group --build "$ROOT" "$HERE/$DEB_OUT"
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echo "built: $HERE/$DEB_OUT"
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