claude-noether
d8aa3aae8d
Substitutes H264DSPContext.chroma_dc_dequant_idct in the 4:2:0 / bit_depth=8 init path with a wrapper that composes the daedalus chroma DC Hadamard primitive (daedalus-fourier PR #25) with the qmul scaling FFmpeg's reference does in one fused function (h264idct_template.c::ff_h264_chroma_dc_dequant_idct). Algorithm per H.264 §8.5.11.1 / §8.5.11.2: 1. Extract 4 DCs from the scattered positions in the per-MB coefficient buffer (stride=32, xStride=16) 2. 2x2 Hadamard transform (daedalus primitive) 3. qmul scale + >> 7, write back to original positions Bit-exact against ff_h264_chroma_dc_dequant_idct_8_c. The Hadamard itself is gated by the fourier PR #23 7-case test suite (including the H·H = 4·I algebraic invariant), and the public-API parity test added in PR #25 confirms the src/ symbol matches the test ref. 4:2:2 chroma stays on the in-tree ff_h264_chroma422_dc_dequant_idct_c path — same chroma_format_idc<=1 gating shape as 0009 chroma deblock. Pin bump: _daedalus_fourier_commit / DAEDALUS_FOURIER_COMMIT bumped to b9f9ff2a (post-PR #25) so the build picks up the public daedalus_h264_chroma_dc_hadamard_2x2 symbol. Verified the patch applies cleanly on top of 0001-0010 against the pinned upstream commit b57fbbe5 on hertz.
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.