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mpv on ohm is currently stock arch from [extra]. To ship the vo_dmabuf_wayland plane-semantics fix per marfrit/dmabuf-modifier-triage#1, we need an mpv-fourier package following the same fourier-umbrella pattern as kwin-fourier, qt6-base-fourier, firefox-fourier, libva-v4l2-request-fourier. This commit lays down: - arch/mpv-fourier/PKGBUILD pinning upstream mpv 0.41.0 tarball, with empty patch slot in prepare(). replaces=mpv. provides=mpv,libmpv.so. When iter1 produces the patch, add it to source=()/sha256sums=() and uncomment the patch -p1 line. - arch/mpv-fourier/README.md documenting why + tracker links - .gitea/workflows/build.yml job mpv-fourier-aarch64 chained after libva-v4l2-request-fourier-aarch64 for marfrit.db serialization. Same fermi LXC runner, same makepkg → sign → repo-add → rsync flow. Initial scaffold builds vanilla mpv 0.41.0 with no fourier patches — once iter1 lands, bump pkgrel and add the patch. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
41 lines
1.6 KiB
Markdown
41 lines
1.6 KiB
Markdown
# mpv-fourier
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mpv with the fourier-umbrella patches.
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## Why
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The dmabuf-modifier-triage campaign isolated the green-frames bug on ohm
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to mpv's `vo_dmabuf_wayland.c` plane-semantics handling for V4L2 stateless
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decoder dmabufs. mpv currently emits a `zwp_linux_buffer_params_v1`
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message that mixes per-plane fds (V4L2 MPLANE export) with a single-
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allocation offset for plane 1, causing KWin to read the UV chroma plane
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past-EOF on the UV-plane fd and render solid dark green.
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This package is the delivery vehicle for the fix once it's written.
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PKGBUILD is in place with an empty patch slot; the patch itself is iter1
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of the triage campaign.
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## Tracker
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- Bug: [marfrit/dmabuf-modifier-triage#1](https://git.reauktion.de/marfrit/dmabuf-modifier-triage/issues/1)
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- Symptom-tracker: [marfrit/libva-multiplanar#1](https://git.reauktion.de/marfrit/libva-multiplanar/issues/1)
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- Acceptance criterion: `~/src/dmabuf-modifier-triage/screenshots/`
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## Status
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- 2026-05-08: scaffold landed. Builds vanilla mpv 0.41.0 with no
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fourier patches applied (patch slot empty in `prepare()`). pkgrel=1
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pinned to mpv release v0.41.0.
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When iter1 of the triage campaign produces the patch, bump pkgrel,
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add the patch to `source=()` and `sha256sums=()`, uncomment the
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`patch -p1` line in `prepare()`.
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## Hosts that benefit
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Only hosts that exercise the V4L2 stateless dmabuf-wayland path —
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ohm (RK3566 + hantro G1) today, fresnel (RK3399 + hantro + rkvdec)
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once that campaign reaches its mpv-test phase. Other hosts on
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[marfrit] (boltzmann, hertz desktop) won't see any difference as
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the fix is no-op for non-V4L2-stateless dmabuf paths.
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