mesa-panvk-bifrost{,-video}: fix url= to real Gitea repo

Both PKGBUILDs referenced url=https://github.com/marfrit/panvk-bifrost,
which was a hallucinated URL — no such repo existed. The campaign's
real source-of-truth home was just created at
https://git.reauktion.de/marfrit/panvk-bifrost (mfritsche, 2026-05-23).

Point both PKGBUILDs at the real URL so `pacman -Si` and any consumer
reading package metadata follows a working link.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

arch/daedalus-v4l2-dkms/PKGBUILD

@@ -23,10 +23,10 @@ _module=daedalus_v4l2
 # content-equivalent to f0d4186 plus PR #4 (cosmetic menu ctrls).
 # PROTO_VERSION drops 1 → 0; lock-step install with
 # daedalus-v4l2 0.1.0.r33.5d8b436 REQUIRED.
-_commit=5d8b4369e58ab947d1c56b1f718293c57c6065b5
+_commit=872eec505eb91b561892d02a0526749348ddc121
 
-pkgver=0.1.0.r33.5d8b436
+pkgver=0.1.0.r45.872eec5
-pkgrel=1  # reset for new upstream pin (5d8b436 — revert parking design)
+pkgrel=1  # reset for new upstream pin (872eec5 — PROTO_MAX_PAYLOAD 64 KiB -> 1 MiB, closes #19); lock-step with daedalus-v4l2 0.1.0.r45.872eec5 REQUIRED
 pkgdesc="V4L2 stateless decoder shim kernel module (DKMS) — Pi 5 / CM5"
 arch=('any')
 url="https://git.reauktion.de/reauktion/daedalus-v4l2"

arch/daedalus-v4l2/PKGBUILD

@@ -23,12 +23,12 @@ _upstreampkg=daedalus-v4l2
 # (daedalus-v4l2#11).  Daemon still needs daedalus-fourier at
 # build time (Arch packaging for that is a follow-up; Debian side
 # fetches inline via build-deb.sh).
-_commit=1d8f5af1646c7c09b75e07be0c2763b37ea367e6
+_commit=872eec505eb91b561892d02a0526749348ddc121
 
 # 0.1.0 (pre-1.0) + commit count + short sha.  Bump the .Y on each
 # Phase 8.x close.  pkgver() recomputes at build time.
-pkgver=0.1.0.r43.1d8f5af
+pkgver=0.1.0.r45.872eec5
-pkgrel=1  # reset for new upstream pin (1d8f5af — pause-time tiny-bitstream filter, closes #17)
+pkgrel=1  # reset for new upstream pin (872eec5 — PROTO_MAX_PAYLOAD 64 KiB -> 1 MiB, closes #19); lock-step with daedalus-v4l2-dkms 0.1.0.r45.872eec5 REQUIRED
 pkgdesc="Userspace daemon for the daedalus-v4l2 V4L2 stateless decoder shim (VP9/AV1/H.264 on Pi 5 / CM5)"
 arch=('aarch64')
 url="https://git.reauktion.de/reauktion/daedalus-v4l2"

arch/ffmpeg-v4l2-request-fourier/0007-h264-qpel-mc20-daedalus-fourier.patch

@@ -0,0 +1,139 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Markus Fritsche <mfritsche@reauktion.de>
+Date: Sat, 23 May 2026 12:00:00 +0200
+Subject: [PATCH] avcodec/aarch64/h264qpel: route 8x8 mc20 through
+ daedalus-fourier
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+H264QpelContext.put_h264_qpel_pixels_tab[1][2] (8x8 luma horizontal
+half-pel, 6-tap "put" variant — the canonical representative of the
+H.264 luma motion-compensation family) now dispatches through
+daedalus_recipe_dispatch_h264_qpel_mc20 instead of
+ff_put_h264_qpel8_mc20_neon.
+
+Cycle 9 of the daedalus-v4l2#11 step 2 substitution arc; closes the
+4-cycle libavcodec.so substitution sequence (6 IDCT 4x4 / 7 IDCT 8x8 /
+8 luma-v deblock / 9 qpel mc20).
+
+The recipe layer picks the substrate. Per docs/k9_h264qpel_mc20.md
+the verdict is CPU NEON: per-block 7.6 ns at 131 Mblock/s gives 135x
+margin over 30 fps 1080p, and the QPU dispatch floor (~250 ns)
+makes any V3D shader strictly worse. Substitution is plumbing-only,
+NEON-by-recipe — same daedalus_ctx_create_no_qpu pthread_once
+context shape the cycles 6/7/8 shims already own (kept SEPARATE
+from the H264DSP shim's ctx because H264QPEL is its own libavcodec
+Makefile module and link order does not guarantee a single .o
+owns the ctx symbol; one extra ~µs init per process, paid lazily).
+
+Other H.264 luma MC variants (mc02, mc11, mc22 etc.) and the 16x16
+size tier stay on the in-tree NEON .S code. Per the cycle-9 phase-1
+rationale, mc20 8x8 is representative of the whole family's per-block
+cost — extending the substitution to other variants would multiply
+recipe-lookup overhead without changing the substrate verdict.
+
+Bit-exact against ff_put_h264_qpel8_mc20_neon (daedalus-fourier
+cycle 9 green; M1 = 100% bit-exact across 10000 random blocks).
+
+No SONAME change, no Depends change.
+
+Refs reauktion/daedalus-v4l2#11 — substitution arc step 2 cycle 9.
+---
+ libavcodec/aarch64/Makefile                |  3 +-
+ libavcodec/aarch64/h264_qpel_daedalus.c    | 50 ++++++++++++++++++++++
+ libavcodec/aarch64/h264qpel_init_aarch64.c |  4 +-
+ 3 files changed, 55 insertions(+), 2 deletions(-)
+ create mode 100644 libavcodec/aarch64/h264_qpel_daedalus.c
+
+diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
+--- a/libavcodec/aarch64/Makefile
++++ b/libavcodec/aarch64/Makefile
+@@ -7,7 +7,8 @@ OBJS-$(CONFIG_H264DSP)                  += aarch64/h264dsp_init_aarch64.o \
+                                            aarch64/h264_idct_daedalus.o
+ OBJS-$(CONFIG_HUFFYUVDSP)               += aarch64/huffyuvdsp_init_aarch64.o
+ OBJS-$(CONFIG_H264PRED)                 += aarch64/h264pred_init.o
+-OBJS-$(CONFIG_H264QPEL)                 += aarch64/h264qpel_init_aarch64.o
++OBJS-$(CONFIG_H264QPEL)                 += aarch64/h264qpel_init_aarch64.o \
++                                           aarch64/h264_qpel_daedalus.o
+ OBJS-$(CONFIG_HPELDSP)                  += aarch64/hpeldsp_init_aarch64.o
+ OBJS-$(CONFIG_IDCTDSP)                  += aarch64/idctdsp_init_aarch64.o
+ OBJS-$(CONFIG_ME_CMP)                   += aarch64/me_cmp_init_aarch64.o
+diff --git a/libavcodec/aarch64/h264_qpel_daedalus.c b/libavcodec/aarch64/h264_qpel_daedalus.c
+new file mode 100644
+--- /dev/null
++++ b/libavcodec/aarch64/h264_qpel_daedalus.c
+@@ -0,0 +1,50 @@
++/*
++ * H.264 luma qpel mc20 (8x8, horizontal half-pel, 6-tap "put")
++ * — daedalus-fourier substitution shim.
++ *
++ * Routes H264QpelContext.put_h264_qpel_pixels_tab[1][2] through
++ * daedalus_recipe_dispatch_h264_qpel_mc20 instead of
++ * ff_put_h264_qpel8_mc20_neon.  The recipe layer picks the substrate
++ * (CPU NEON for cycle 9; QPU not viable — per-block 7.6 ns vs
++ * ~250 ns QPU dispatch floor, see docs/k9_h264qpel_mc20.md).
++ *
++ * Sibling to libavcodec/aarch64/h264_idct_daedalus.c.  We keep a
++ * SEPARATE process-global pthread_once context here instead of
++ * sharing the H264DSP one because H264QPEL is its own libavcodec
++ * Makefile module and link order does not guarantee a single .o
++ * owns the ctx symbol.  The cost is one extra
++ * daedalus_ctx_create_no_qpu (~µs) per process; daemon and host
++ * processes pay this lazily on first MC call.
++ *
++ * FFmpeg H264QpelContext convention: both dst and src use a SINGLE
++ * stride and `src` already points at the leftmost OUTPUT column
++ * (col 0); the 6-tap filter reads cols -2..+3.  This matches
++ * daedalus_recipe_dispatch_h264_qpel_mc20's documented contract
++ * directly, so dst_off = src_off = 0.
++ */
++
++#include <pthread.h>
++#include <stddef.h>
++#include <stdint.h>
++
++#include <daedalus.h>
++
++#include "libavutil/attributes.h"
++
++static daedalus_ctx     *g_dctx;
++static pthread_once_t    g_dctx_once = PTHREAD_ONCE_INIT;
++
++static void daedalus_ctx_init_once(void)
++{
++    g_dctx = daedalus_ctx_create_no_qpu();
++}
++
++void ff_put_h264_qpel8_mc20_daedalus(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
++
++void ff_put_h264_qpel8_mc20_daedalus(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
++{
++    static const daedalus_h264_qpel_meta meta = { .dst_off = 0, .src_off = 0 };
++    pthread_once(&g_dctx_once, daedalus_ctx_init_once);
++    daedalus_recipe_dispatch_h264_qpel_mc20(g_dctx, dst, src, (size_t)stride,
++                                            1, &meta);
++}
+diff --git a/libavcodec/aarch64/h264qpel_init_aarch64.c b/libavcodec/aarch64/h264qpel_init_aarch64.c
+--- a/libavcodec/aarch64/h264qpel_init_aarch64.c
++++ b/libavcodec/aarch64/h264qpel_init_aarch64.c
+@@ -47,6 +47,8 @@ void ff_put_h264_qpel8_mc00_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t str
+ void ff_put_h264_qpel8_mc10_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc20_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc30_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
++void ff_put_h264_qpel8_mc20_daedalus(uint8_t *dst, const uint8_t *src,
++                                     ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc01_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc11_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc21_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+@@ -184,7 +186,7 @@ av_cold void ff_h264qpel_init_aarch64(H264QpelContext *c, int bit_depth)
+
+         c->put_h264_qpel_pixels_tab[1][ 0] = ff_put_h264_qpel8_mc00_neon;
+         c->put_h264_qpel_pixels_tab[1][ 1] = ff_put_h264_qpel8_mc10_neon;
+-        c->put_h264_qpel_pixels_tab[1][ 2] = ff_put_h264_qpel8_mc20_neon;
++        c->put_h264_qpel_pixels_tab[1][ 2] = ff_put_h264_qpel8_mc20_daedalus;
+         c->put_h264_qpel_pixels_tab[1][ 3] = ff_put_h264_qpel8_mc30_neon;
+         c->put_h264_qpel_pixels_tab[1][ 4] = ff_put_h264_qpel8_mc01_neon;
+         c->put_h264_qpel_pixels_tab[1][ 5] = ff_put_h264_qpel8_mc11_neon;
+--
+2.47.3

arch/ffmpeg-v4l2-request-fourier/PKGBUILD

@@ -24,13 +24,13 @@ _srcname=FFmpeg
 _version='8.1'
 _commit='b57fbbe50c9b2656fad86a1a7eeabfd2b2a50935'  # v4l2-request-n8.1 tip 2026-04-24
 pkgver=8.1.r123329.b57fbbe
-pkgrel=9   # pkgrel=9 — restore AV_CODEC_FLAG_LOW_DELAY for H.264 (2026-05-22)
+pkgrel=10  # pkgrel=10 — H.264 luma qpel mc20 daedalus-fourier substitution (cycle 9, 2026-05-23)
 epoch=2
 
-# daedalus-fourier pin — first kernel substitution in libavcodec
+# daedalus-fourier pin.  209a421 = PR #2 merge (Phase 8c — public API
-# (cycle 6 H.264 IDCT 4x4).  Same SHA as the daedalus-v4l2 daemon's
+# gains daedalus_recipe_dispatch_h264_qpel_mc20 + DAEDALUS_KERNEL_H264_QPEL_MC20).
-# inline build; lockstep with that until the public API rolls.
+# Cycle 9 closes the libavcodec.so substitution arc started at cycle 6.
-_daedalus_fourier_commit='d87239d8172307d9a1b93c95cbed116d175b85cc'
+_daedalus_fourier_commit='209a4218bcb98b91c04f07ad61513bb04adb13ad'
 pkgdesc='FFmpeg with V4L2 Request API hwaccel (Rockchip / Allwinner stateless decode)'
 arch=('aarch64')
 url='https://github.com/Kwiboo/FFmpeg'
@@ -93,8 +93,9 @@ source=("git+https://github.com/Kwiboo/FFmpeg.git#commit=${_commit}"
         '0003-h264-idct4-daedalus-fourier.patch'
         '0004-h264-idct8-daedalus-fourier.patch'
         '0005-h264-deblock-luma-v-daedalus-fourier.patch'
-        '0006-h264-restore-low-delay.patch')
+        '0006-h264-restore-low-delay.patch'
-sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
+        '0007-h264-qpel-mc20-daedalus-fourier.patch')
+sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
 
 pkgver() {
   cd "${_srcname}"
@@ -111,6 +112,7 @@ prepare() {
   patch -Np1 -i "${srcdir}/0004-h264-idct8-daedalus-fourier.patch"
   patch -Np1 -i "${srcdir}/0005-h264-deblock-luma-v-daedalus-fourier.patch"
   patch -Np1 -i "${srcdir}/0006-h264-restore-low-delay.patch"
+  patch -Np1 -i "${srcdir}/0007-h264-qpel-mc20-daedalus-fourier.patch"
 }
 
 build() {

arch/mesa-panvk-bifrost-video/PKGBUILD

@@ -45,7 +45,7 @@ pkgver=26.0.6.r5.video1
 pkgrel=1
 pkgdesc="Patched Mesa libvulkan_panfrost.so adding VK_KHR_video_decode_h264 on Bifrost SBCs (sibling of mesa-panvk-bifrost-r4)"
 arch=('aarch64')
-url="https://github.com/marfrit/panvk-bifrost"
+url="https://git.reauktion.de/marfrit/panvk-bifrost"
 license=('MIT')
 
 depends=(

arch/mesa-panvk-bifrost/PKGBUILD

@@ -34,7 +34,7 @@ pkgver=26.0.6.r4
 pkgrel=1
 pkgdesc="Patched Mesa libvulkan_panfrost.so exposing Bifrost-gen Mali to Vulkan apps (panvk-bifrost campaign)"
 arch=('aarch64')
-url="https://github.com/marfrit/panvk-bifrost"
+url="https://git.reauktion.de/marfrit/panvk-bifrost"
 license=('MIT')
 
 # We co-install at /usr/lib/panvk-bifrost/ so no conflicts with stock mesa.

debian/daedalus-v4l2-dkms/build-deb.sh

@@ -14,9 +14,9 @@
 # Sibling userspace package: ../daedalus-v4l2/build-deb.sh
 set -euo pipefail
 
-UPSTREAM_COMMIT=5d8b4369e58ab947d1c56b1f718293c57c6065b5
+UPSTREAM_COMMIT=872eec505eb91b561892d02a0526749348ddc121
-PKGVER=0.1.0+r33+g5d8b436
+PKGVER=0.1.0+r45+g872eec5
-PKGREL=1  # reset for new upstream pin (5d8b436 — revert parking design); still carries the #64 multi-kernel postinst fix
+PKGREL=1  # reset for new upstream pin (872eec5 — PROTO_MAX_PAYLOAD 64 KiB -> 1 MiB, closes #19); lock-step with daedalus-v4l2 0.1.0+r45+g872eec5 REQUIRED
 MODULE_NAME=daedalus_v4l2
 
 HERE=$(dirname "$(readlink -f "$0")")

debian/daedalus-v4l2-dkms/debian/changelog

@@ -1,3 +1,24 @@
+daedalus-v4l2-dkms (0.1.0+r45+g872eec5-1) bookworm trixie; urgency=medium
+
+  * Bump to 872eec5 — picks up daedalus-v4l2 PR #20 (closes #19).
+    Wire-protocol cap DAEDALUS_PROTO_MAX_PAYLOAD raised from 64 KiB
+    to 1 MiB in include/daedalus_v4l2_proto.h.  The kernel module
+    inherits the larger DAEDALUS_MAX_BITSTREAM via the same #define
+    and daedalus_fill_output_fmt now reports OUTPUT_MPLANE
+    sizeimage = ~1 MiB instead of 65484.
+  * Skips the r33 -> r45 commit range — between 5d8b436 and 872eec5
+    only one kernel/include change landed (the PROTO_MAX_PAYLOAD
+    bump above).  The intervening daemon-only bumps (r37 / r39 /
+    r41 / r43) didn't touch kernel/ or include/ at all.
+  * Effective wire cap is min(kernel, daemon) — lock-step install
+    WITH daedalus-v4l2 0.1.0+r45+g872eec5 REQUIRED.
+  * Allocations (kmemdup / kmalloc on payload, vb2 plane backing)
+    are dynamic and sized per-payload at runtime; the bump only
+    sets the ceiling.  KMALLOC_MAX_SIZE on aarch64 SLUB is several
+    MiB so 1 MiB is well within bounds.
+
+ -- Markus Fritsche <mfritsche@reauktion.de>  Fri, 22 May 2026 21:00:00 +0000
+
 daedalus-v4l2-dkms (0.1.0+r33+g5d8b436-1) bookworm trixie; urgency=medium
 
   * Bump to 5d8b436 — reverts daedalus-v4l2 PRs #7 + #8.  Kernel

debian/daedalus-v4l2/build-deb.sh

@@ -19,9 +19,9 @@ set -euo pipefail
 # source tree we own in marfrit-packages.  Headers + .pc files
 # come from ffmpeg-v4l2-request-fourier (installed by the CI
 # workflow before this script runs; see PKG_CONFIG_PATH below).
-UPSTREAM_COMMIT=1d8f5af1646c7c09b75e07be0c2763b37ea367e6
+UPSTREAM_COMMIT=872eec505eb91b561892d02a0526749348ddc121
-PKGVER=0.1.0+r43+g1d8f5af
+PKGVER=0.1.0+r45+g872eec5
-PKGREL=1  # reset for new upstream pin (1d8f5af — pause-time tiny-bitstream filter, closes #17)
+PKGREL=1  # reset for new upstream pin (872eec5 — PROTO_MAX_PAYLOAD 64 KiB -> 1 MiB, closes #19); lock-step with daedalus-v4l2-dkms 0.1.0+r45+g872eec5 REQUIRED
 
 # daedalus-fourier pin.  d87239d = marfrit/daedalus-fourier PR #1 merge
 # (install rules + pkg-config, enables this consumer to find_package

debian/daedalus-v4l2/debian/changelog

@@ -1,3 +1,26 @@
+daedalus-v4l2 (0.1.0+r45+g872eec5-1) bookworm trixie; urgency=medium
+
+  * Bump to 872eec5 — picks up daedalus-v4l2 PR #20 (closes #19).
+    Wire-protocol cap DAEDALUS_PROTO_MAX_PAYLOAD raised from 64 KiB
+    to 1 MiB.  DAEDALUS_MAX_BITSTREAM follows; daedalus_fill_output_fmt
+    now reports OUTPUT_MPLANE sizeimage = ~1 MiB instead of 65484.
+    libva-v4l2-request-fourier's S_FMT-driven OUTPUT-pool resize
+    finally succeeds; Firefox no longer falls off to libmozavcodec
+    SW when an H.264 slice exceeds 64 KiB (routine on any
+    720p+ stream).
+  * #define-only change in include/daedalus_v4l2_proto.h; struct
+    layout unchanged.  But effective cap is min(kernel, daemon) —
+    lock-step install of this package WITH
+    daedalus-v4l2-dkms 0.1.0+r45+g872eec5 REQUIRED.
+  * Daemon-side allocations are dynamic (malloc-on-payload), so
+    the practical growth is one ~1 MiB read buffer per daemon
+    process at startup.  Negligible on Pi 5 / 8 GB.
+  * Picks up the same r43 -> r45 transition as daedalus-v4l2-dkms
+    (which had been stuck at r33+g5d8b436 since the parking-design
+    revert because the kernel module didn't change in r37/r39/r41/r43).
+
+ -- Markus Fritsche <mfritsche@reauktion.de>  Fri, 22 May 2026 21:00:00 +0000
+
 daedalus-v4l2 (0.1.0+r43+g1d8f5af-1) bookworm trixie; urgency=medium
 
   * Bump to 1d8f5af — picks up daedalus-v4l2 PR #18 (closes #17).

debian/ffmpeg-v4l2-request-fourier/0007-h264-qpel-mc20-daedalus-fourier.patch

@@ -0,0 +1,139 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Markus Fritsche <mfritsche@reauktion.de>
+Date: Sat, 23 May 2026 12:00:00 +0200
+Subject: [PATCH] avcodec/aarch64/h264qpel: route 8x8 mc20 through
+ daedalus-fourier
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+H264QpelContext.put_h264_qpel_pixels_tab[1][2] (8x8 luma horizontal
+half-pel, 6-tap "put" variant — the canonical representative of the
+H.264 luma motion-compensation family) now dispatches through
+daedalus_recipe_dispatch_h264_qpel_mc20 instead of
+ff_put_h264_qpel8_mc20_neon.
+
+Cycle 9 of the daedalus-v4l2#11 step 2 substitution arc; closes the
+4-cycle libavcodec.so substitution sequence (6 IDCT 4x4 / 7 IDCT 8x8 /
+8 luma-v deblock / 9 qpel mc20).
+
+The recipe layer picks the substrate. Per docs/k9_h264qpel_mc20.md
+the verdict is CPU NEON: per-block 7.6 ns at 131 Mblock/s gives 135x
+margin over 30 fps 1080p, and the QPU dispatch floor (~250 ns)
+makes any V3D shader strictly worse. Substitution is plumbing-only,
+NEON-by-recipe — same daedalus_ctx_create_no_qpu pthread_once
+context shape the cycles 6/7/8 shims already own (kept SEPARATE
+from the H264DSP shim's ctx because H264QPEL is its own libavcodec
+Makefile module and link order does not guarantee a single .o
+owns the ctx symbol; one extra ~µs init per process, paid lazily).
+
+Other H.264 luma MC variants (mc02, mc11, mc22 etc.) and the 16x16
+size tier stay on the in-tree NEON .S code. Per the cycle-9 phase-1
+rationale, mc20 8x8 is representative of the whole family's per-block
+cost — extending the substitution to other variants would multiply
+recipe-lookup overhead without changing the substrate verdict.
+
+Bit-exact against ff_put_h264_qpel8_mc20_neon (daedalus-fourier
+cycle 9 green; M1 = 100% bit-exact across 10000 random blocks).
+
+No SONAME change, no Depends change.
+
+Refs reauktion/daedalus-v4l2#11 — substitution arc step 2 cycle 9.
+---
+ libavcodec/aarch64/Makefile                |  3 +-
+ libavcodec/aarch64/h264_qpel_daedalus.c    | 50 ++++++++++++++++++++++
+ libavcodec/aarch64/h264qpel_init_aarch64.c |  4 +-
+ 3 files changed, 55 insertions(+), 2 deletions(-)
+ create mode 100644 libavcodec/aarch64/h264_qpel_daedalus.c
+
+diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
+--- a/libavcodec/aarch64/Makefile
++++ b/libavcodec/aarch64/Makefile
+@@ -7,7 +7,8 @@ OBJS-$(CONFIG_H264DSP)                  += aarch64/h264dsp_init_aarch64.o \
+                                            aarch64/h264_idct_daedalus.o
+ OBJS-$(CONFIG_HUFFYUVDSP)               += aarch64/huffyuvdsp_init_aarch64.o
+ OBJS-$(CONFIG_H264PRED)                 += aarch64/h264pred_init.o
+-OBJS-$(CONFIG_H264QPEL)                 += aarch64/h264qpel_init_aarch64.o
++OBJS-$(CONFIG_H264QPEL)                 += aarch64/h264qpel_init_aarch64.o \
++                                           aarch64/h264_qpel_daedalus.o
+ OBJS-$(CONFIG_HPELDSP)                  += aarch64/hpeldsp_init_aarch64.o
+ OBJS-$(CONFIG_IDCTDSP)                  += aarch64/idctdsp_init_aarch64.o
+ OBJS-$(CONFIG_ME_CMP)                   += aarch64/me_cmp_init_aarch64.o
+diff --git a/libavcodec/aarch64/h264_qpel_daedalus.c b/libavcodec/aarch64/h264_qpel_daedalus.c
+new file mode 100644
+--- /dev/null
++++ b/libavcodec/aarch64/h264_qpel_daedalus.c
+@@ -0,0 +1,50 @@
++/*
++ * H.264 luma qpel mc20 (8x8, horizontal half-pel, 6-tap "put")
++ * — daedalus-fourier substitution shim.
++ *
++ * Routes H264QpelContext.put_h264_qpel_pixels_tab[1][2] through
++ * daedalus_recipe_dispatch_h264_qpel_mc20 instead of
++ * ff_put_h264_qpel8_mc20_neon.  The recipe layer picks the substrate
++ * (CPU NEON for cycle 9; QPU not viable — per-block 7.6 ns vs
++ * ~250 ns QPU dispatch floor, see docs/k9_h264qpel_mc20.md).
++ *
++ * Sibling to libavcodec/aarch64/h264_idct_daedalus.c.  We keep a
++ * SEPARATE process-global pthread_once context here instead of
++ * sharing the H264DSP one because H264QPEL is its own libavcodec
++ * Makefile module and link order does not guarantee a single .o
++ * owns the ctx symbol.  The cost is one extra
++ * daedalus_ctx_create_no_qpu (~µs) per process; daemon and host
++ * processes pay this lazily on first MC call.
++ *
++ * FFmpeg H264QpelContext convention: both dst and src use a SINGLE
++ * stride and `src` already points at the leftmost OUTPUT column
++ * (col 0); the 6-tap filter reads cols -2..+3.  This matches
++ * daedalus_recipe_dispatch_h264_qpel_mc20's documented contract
++ * directly, so dst_off = src_off = 0.
++ */
++
++#include <pthread.h>
++#include <stddef.h>
++#include <stdint.h>
++
++#include <daedalus.h>
++
++#include "libavutil/attributes.h"
++
++static daedalus_ctx     *g_dctx;
++static pthread_once_t    g_dctx_once = PTHREAD_ONCE_INIT;
++
++static void daedalus_ctx_init_once(void)
++{
++    g_dctx = daedalus_ctx_create_no_qpu();
++}
++
++void ff_put_h264_qpel8_mc20_daedalus(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
++
++void ff_put_h264_qpel8_mc20_daedalus(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
++{
++    static const daedalus_h264_qpel_meta meta = { .dst_off = 0, .src_off = 0 };
++    pthread_once(&g_dctx_once, daedalus_ctx_init_once);
++    daedalus_recipe_dispatch_h264_qpel_mc20(g_dctx, dst, src, (size_t)stride,
++                                            1, &meta);
++}
+diff --git a/libavcodec/aarch64/h264qpel_init_aarch64.c b/libavcodec/aarch64/h264qpel_init_aarch64.c
+--- a/libavcodec/aarch64/h264qpel_init_aarch64.c
++++ b/libavcodec/aarch64/h264qpel_init_aarch64.c
+@@ -47,6 +47,8 @@ void ff_put_h264_qpel8_mc00_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t str
+ void ff_put_h264_qpel8_mc10_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc20_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc30_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
++void ff_put_h264_qpel8_mc20_daedalus(uint8_t *dst, const uint8_t *src,
++                                     ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc01_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc11_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+ void ff_put_h264_qpel8_mc21_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
+@@ -184,7 +186,7 @@ av_cold void ff_h264qpel_init_aarch64(H264QpelContext *c, int bit_depth)
+
+         c->put_h264_qpel_pixels_tab[1][ 0] = ff_put_h264_qpel8_mc00_neon;
+         c->put_h264_qpel_pixels_tab[1][ 1] = ff_put_h264_qpel8_mc10_neon;
+-        c->put_h264_qpel_pixels_tab[1][ 2] = ff_put_h264_qpel8_mc20_neon;
++        c->put_h264_qpel_pixels_tab[1][ 2] = ff_put_h264_qpel8_mc20_daedalus;
+         c->put_h264_qpel_pixels_tab[1][ 3] = ff_put_h264_qpel8_mc30_neon;
+         c->put_h264_qpel_pixels_tab[1][ 4] = ff_put_h264_qpel8_mc01_neon;
+         c->put_h264_qpel_pixels_tab[1][ 5] = ff_put_h264_qpel8_mc11_neon;
+--
+2.47.3

debian/ffmpeg-v4l2-request-fourier/build-deb.sh

@@ -33,18 +33,19 @@ FFMPEG_VERSION=8.1
 # epoch 2 matches Debian's stock ffmpeg (currently 7:7.1.x in trixie);
 # +rfourier suffix to avoid colliding with upstream/Debian rebuilds.
 PKGVER=2:${FFMPEG_VERSION}+rfourier+gb57fbbe
-PKGREL=9  # pkgrel=9 — restore AV_CODEC_FLAG_LOW_DELAY semantics in the
+PKGREL=10  # pkgrel=10 — H.264 luma qpel mc20 daedalus-fourier substitution
-          # H.264 decoder (FFmpeg 8.x dropped them).  Fixes the 2-1-4-3
+           # (cycle 9 of the daedalus-v4l2#11 step 2 substitution arc; closes
-          # B-frame pair-swap that re-appeared in Firefox YouTube after
+           # the libavcodec.so substitution sequence 6 IDCT4 / 7 IDCT8 /
-          # the SONAME 61→62 jump (PR #75) silently neutered the
+           # 8 luma-v deblock / 9 qpel mc20).  Pulls daedalus-fourier PR #2
-          # daemon's ctx->flags |= AV_CODEC_FLAG_LOW_DELAY at
+           # which extends the public API with
-          # daemon/src/decoder.c:202.  Substitution arc unchanged.
+           # daedalus_recipe_dispatch_h264_qpel_mc20.  (2026-05-23)
-          # (2026-05-22)
 
-# daedalus-fourier pin — first kernel substitution in libavcodec (cycle 6
+# daedalus-fourier pin.  209a421 = daedalus-fourier PR #2 merge — public
-# H.264 IDCT 4x4).  Same SHA as the daedalus-v4l2 daemon already ships
+# API now exposes daedalus_recipe_dispatch_h264_qpel_mc20 +
-# inline; rev in lockstep with the daemon when the public API rolls.
+# DAEDALUS_KERNEL_H264_QPEL_MC20.  Cycle 9 plumbs the last H.264 NEON
-DAEDALUS_FOURIER_COMMIT=d87239d8172307d9a1b93c95cbed116d175b85cc
+# kernel through the recipe layer.  Daemon-side build (debian/daedalus-v4l2)
+# can bump in a follow-up; this PR only changes the libavcodec.so consumer.
+DAEDALUS_FOURIER_COMMIT=209a4218bcb98b91c04f07ad61513bb04adb13ad
 
 HERE=$(dirname "$(readlink -f "$0")")
 
@@ -72,6 +73,7 @@ patch -Np1 -i "$HERE/0003-h264-idct4-daedalus-fourier.patch"
 patch -Np1 -i "$HERE/0004-h264-idct8-daedalus-fourier.patch"
 patch -Np1 -i "$HERE/0005-h264-deblock-luma-v-daedalus-fourier.patch"
 patch -Np1 -i "$HERE/0006-h264-restore-low-delay.patch"
+patch -Np1 -i "$HERE/0007-h264-qpel-mc20-daedalus-fourier.patch"
 
 # --- daedalus-fourier: fetch + build static .a with PIC, install to a
 # per-build prefix; libavcodec.so links it into the shared object so

debian/ffmpeg-v4l2-request-fourier/debian/changelog

@@ -1,3 +1,37 @@
+ffmpeg-v4l2-request-fourier (2:8.1+rfourier+gb57fbbe-10) bookworm trixie; urgency=medium
+
+  * Add 0007-h264-qpel-mc20-daedalus-fourier.patch —
+    H264QpelContext.put_h264_qpel_pixels_tab[1][2] (8x8 luma
+    horizontal half-pel, 6-tap "put" — the canonical representative
+    of the H.264 luma motion-compensation family) now dispatches
+    through daedalus_recipe_dispatch_h264_qpel_mc20 instead of
+    ff_put_h264_qpel8_mc20_neon.  Cycle 9 of the daedalus-v4l2#11
+    step 2 substitution arc; closes the 4-cycle libavcodec.so
+    substitution sequence (6 IDCT4 / 7 IDCT8 / 8 luma-v deblock /
+    9 qpel mc20).
+  * Bumps daedalus-fourier pin d87239d → 209a421 (PR #2 — public
+    API extended with daedalus_recipe_dispatch_h264_qpel_mc20 +
+    DAEDALUS_KERNEL_H264_QPEL_MC20).
+  * Cycle 9 is "CPU primary; QPU pointless" per
+    docs/k9_h264qpel_mc20.md.  Per-block 7.6 ns at 131 Mblock/s
+    gives 135x margin over 30 fps 1080p; QPU dispatch floor at
+    ~250 ns makes any V3D shader strictly worse.  Substitution
+    is plumbing-only, NEON-by-recipe — same
+    daedalus_ctx_create_no_qpu pthread_once shape the cycles 6/7/8
+    shims already own (kept SEPARATE from the H264DSP shim's ctx
+    because H264QPEL is its own libavcodec Makefile module and
+    link order does not guarantee a single .o owns the ctx symbol;
+    one extra ~µs init per process, paid lazily on first MC call).
+  * Other H.264 luma MC variants (mc02, mc11, mc22 etc.) and the
+    16x16 size tier stay on the in-tree NEON .S code.  Per the
+    cycle-9 phase-1 rationale, mc20 8x8 is representative of the
+    whole family's per-block cost.
+  * Bit-exact against ff_put_h264_qpel8_mc20_neon (daedalus-fourier
+    cycle 9 green; 10000/10000 random blocks).
+  * No SONAME change, no Depends change.
+
+ -- Markus Fritsche <mfritsche@reauktion.de>  Sat, 23 May 2026 12:00:00 +0000
+
 ffmpeg-v4l2-request-fourier (2:8.1+rfourier+gb57fbbe-9) bookworm trixie; urgency=medium
 
   * Add 0006-h264-restore-low-delay.patch — restore the documented