Claude (noether)
ee636a6d21
Adds Kwiboo / Langdale's 2024-08 patches (0001-meson + 0002-vo-hwdec-drmprime)
so AV_HWDEVICE_TYPE_V4L2REQUEST flows through mpv's drmprime VO hwdec and
`--hwdec=v4l2request` engages against the dmabuf-wayland VO instead of failing
with "Could not create device". The matcher previously filtered on
AV_HWDEVICE_TYPE_DRM and rejected v4l2request even when libavcodec's hwaccel
returned a valid PRIME descriptor.
PKGBUILD: pkgrel 9 → 10, source[] picks up both new patches, prepare() applies
them before the existing 0001-vo_dmabuf_wayland cache-sync workaround,
meson build flag -Dv4l2request=enabled added so the new option compiles in.
Stacks on top of iter1 (713a856): the dma_buf cache-sync workaround stays
load-bearing for the existing vaapi_dmabuf and drmprime_dmabuf import paths;
this iter only adds the wiring for the drmprime VO's hwdec selector.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
mpv-fourier
mpv with the fourier-umbrella patches.
Why
The dmabuf-modifier-triage campaign isolated the green-frames bug on ohm
to mpv's vo_dmabuf_wayland.c plane-semantics handling for V4L2 stateless
decoder dmabufs. mpv currently emits a zwp_linux_buffer_params_v1
message that mixes per-plane fds (V4L2 MPLANE export) with a single-
allocation offset for plane 1, causing KWin to read the UV chroma plane
past-EOF on the UV-plane fd and render solid dark green.
This package is the delivery vehicle for the fix once it's written. PKGBUILD is in place with an empty patch slot; the patch itself is iter1 of the triage campaign.
Tracker
- Bug: marfrit/dmabuf-modifier-triage#1
- Symptom-tracker: marfrit/libva-multiplanar#1
- Acceptance criterion:
~/src/dmabuf-modifier-triage/screenshots/
Status
- 2026-05-08: scaffold landed. Builds vanilla mpv 0.41.0 with no
fourier patches applied (patch slot empty in
prepare()). pkgrel=1 pinned to mpv release v0.41.0.
When iter1 of the triage campaign produces the patch, bump pkgrel,
add the patch to source=() and sha256sums=(), uncomment the
patch -p1 line in prepare().
Hosts that benefit
Only hosts that exercise the V4L2 stateless dmabuf-wayland path — ohm (RK3566 + hantro G1) today, fresnel (RK3399 + hantro + rkvdec) once that campaign reaches its mpv-test phase. Other hosts on [marfrit] (boltzmann, hertz desktop) won't see any difference as the fix is no-op for non-V4L2-stateless dmabuf paths.