forked from marfrit/marfrit-packages
claude-noether
6047c04f7f
Patches 0003 (IDCT 4x4) and 0007 (qpel mc20) created the libavcodec.so
process-global daedalus_ctx via daedalus_ctx_create_no_qpu(). Rationale
at the time: cycle 6/9 had only CPU NEON paths, so a QPU-capable ctx
would have meant pointless Vulkan init in every host process (firefox-
fourier, mpv-fourier, daedalus_v4l2_daemon, ...).
Two things changed since:
1. Every H.264 hot-path primitive now has a V3D7 compute shader.
IDCT 4x4/8x8 + 8 deblock variants (luma+chroma × V+H × inter+intra)
+ 30 qpel positions (15 put_ + 15 avg_). See daedalus-fourier
PRs #28-#35.
2. Dispatch overhead has been hammered down — buffer pool in
v3d_runner (#160) plus persistent command buffer (#161).
daedalus-fourier PR #36 bench measures the 1080p worst-case
sum on hertz (Pi 5 V3D 7.1, 30 iters x 5 warmup):
1080p worst-case sum (IDCT4 + deblock luma + qpel mc22):
CPU NEON only: 5.57 ms
QPU only: 1.30 ms (CPU/QPU sum ratio = 4.30x)
PR #10's CPU-4x-faster-than-QPU verdict (which justified the original
no_qpu ctx choice) is now reversed by ~17x.
This commit adds 0013-h264-ctx-qpu-capable.patch which flips both H.264
TUs (h264_idct_daedalus.c, h264_qpel_daedalus.c) from
daedalus_ctx_create_no_qpu() to daedalus_ctx_create().
daedalus_ctx_create() probes for a usable Vulkan device and falls back
to no_qpu mode if unavailable, so this is safe on hosts without V3D
(x86 build runners, Debian aarch64 builders without renderD, etc.).
Hosts WITH V3D (Pi 5 deployment targets) now route the H.264 hot-path
through V3D compute instead of CPU NEON.
Wired into both arch PKGBUILD (source[] + prepare()) and debian
build-deb.sh; both pkgrel bumped 10 → 11.
Refs reauktion/daedalus-fourier!36.
marfrit-packages
Overlay package repository for the reauktion.de infrastructure.
Published at: https://packages.reauktion.de/
Scope
| Tree | Arches | Notes |
|---|---|---|
| Arch Linux ARM (ALARM) | aarch64 |
primary target — Pi 5, Rock 5, ampere, KU-1255 test rigs |
| Arch Linux | x86_64 |
for nuccies / workstations |
| Debian | arm64, amd64 |
for non-Arch hosts |
MIPS is intentionally unsupported. The Fritz!Box is sacred.
Layout (served at packages.reauktion.de)
packages.reauktion.de/
├── arch/
│ ├── aarch64/{marfrit.db,marfrit.files,*.pkg.tar.{xz,zst}{,.sig}}
│ └── x86_64/...
├── debian/
│ ├── dists/
│ │ ├── bookworm/{Release,InRelease,Release.gpg,main/binary-{arm64,amd64}/...}
│ │ └── trixie/...
│ └── pool/main/...
└── marfrit.gpg # public signing key
Adding the repo (Arch / ALARM)
curl -sO https://packages.reauktion.de/marfrit.gpg
sudo pacman-key --add marfrit.gpg
sudo pacman-key --lsign-key 92D5E96D8F63C75E4116AA1FF5C8C4603D0D250C
# Paste at the end of /etc/pacman.conf:
[marfrit]
Server = https://packages.reauktion.de/arch/$arch
SigLevel = Required DatabaseRequired
sudo pacman -Sy
Adding the repo (Debian)
sudo install -m 755 -d /etc/apt/keyrings
curl -s https://packages.reauktion.de/marfrit.gpg | \
sudo gpg --dearmor -o /etc/apt/keyrings/marfrit.gpg
echo "deb [signed-by=/etc/apt/keyrings/marfrit.gpg] https://packages.reauktion.de/debian $(lsb_release -cs) main" | \
sudo tee /etc/apt/sources.list.d/marfrit.list
sudo apt update
Signing key
- Fingerprint:
92D5E96D8F63C75E4116AA1FF5C8C4603D0D250C - UID:
Markus Fritsche (marfrit-repo signing) <mfritsche@reauktion.de> - Expires: 2030-04-13
Key management procedures (renewal, rotation, revocation) live in DokuWiki at private:reauktion:marfrit_repo_key (admin-only).
Layout in this Git repo
marfrit-packages/
├── README.md
├── arch/
│ └── distcc-avahi/ # ALARM distcc with --with-avahi
├── debian/ # (future) Debian source packages
└── .gitea/
└── workflows/
└── build.yml # CI pipeline stub
mfritsche@reauktion.de.