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noether/daedalus-v4l2-packages #31

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marfrit merged 2 commits from claude-noether/marfrit-packages:noether/daedalus-v4l2-packages into main 2026-05-18 19:31:00 +00:00
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marfrit commented 2026-05-18 19:30:51 +00:00
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marfrit added 2 commits 2026-05-18 19:30:51 +00:00
debian/ffmpeg-v4l2-request-fourier: new package 45f4b5e56f 
Mirror of arch/ffmpeg-v4l2-request-fourier into the Debian tree.
Same source pin (Kwiboo v4l2-request-n8.1 @ b57fbbe), same 2
patches (libudev-bypass-fallback + nv15-to-p010-unpack), same
configure flag policy (drop X11/AMF/CUDA/Bluray/Vulkan/SDL2/etc.
per Fourier fleet focus).

Output: single .deb at /usr/bin/ffmpeg + /usr/bin/ffprobe +
/usr/lib/aarch64-linux-gnu/libav*.so.61.  Conflicts/Replaces
the stock Debian ffmpeg + per-lib packages; takes epoch 2
(matches Debian's existing ffmpeg epoch).

Provides 'ffmpeg -hwaccel v4l2request' + '-hwaccel drm' routes
that drive rkvdec / hantro / cedrus / rpi-hevc-dec /
daedalus_v4l2 stateless decoders through libavcodec's hwdevice
DRM path, bypassing libva.  Required by mpv-fourier and
firefox-fourier as their backing FFmpeg; also the kdirect
bit-exact reference for libva-v4l2-request-fourier validation.

NOT strictly required for the VAAPI-only path on
daedalus-v4l2 hosts (stock Debian ffmpeg + libva-v4l2-request-
fourier covers that).  Install only when going firefox-fourier
or kdirect.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
debian/mpv-fourier: new package b851861931 
Mirror of arch/mpv-fourier into the Debian tree.  Same source
pin (mpv 0.41.0), same 3 patches:
  - 0001-meson-add-detection-logic-for-v4l2request-support.patch
  - 0002-vo-hwdec-drmprime-add-separate-hwdecs-for-v4l2reques.patch
    (Kwiboo + Langdale wiring for AV_HWDEVICE_TYPE_V4L2REQUEST
     through drmprime VO hwdec — '--hwdec=v4l2request' actually
     engages on dmabuf-wayland)
  - 0001-vo_dmabuf_wayland-explicit-cache-sync-on-import-fd.patch
    (iter1 of dmabuf-modifier-triage — explicit DMA_BUF_IOCTL_SYNC
     on import fds; KWin-on-RK3566 dark-green chroma readback
     regression fix on ohm.  Root cause is the vb2_dma_resv RFC
     upstream still pending.)

Depends on ffmpeg-v4l2-request-fourier (>= 2:8.1+rfourier) —
AV_HWDEVICE_TYPE_V4L2REQUEST only exists in Kwiboo's FFmpeg
fork; stock Debian ffmpeg doesn't have it.

Conflicts/Replaces stock mpv + libmpv2/libmpv1 — drop-in
replacement.  Takes epoch 1.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
marfrit merged commit 0e6f97f041 into main 2026-05-18 19:31:00 +00:00
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Reference: marfrit/marfrit-packages#31
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