video: add V4L2 compat symbols for ffmpeg/opencv
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Authored by seuros on Aug 12 2026, 11:07 AM.

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Reviewers

adrian
thierry
manu

Commits

rGa8c126b6903e: video: add V4L2 compat symbols for ffmpeg/opencv

Summary

Adds v4l2_std_id, struct v4l2_standard/v4l2_plane, VIDIOC_G_STD/S_STD/
ENUMSTD, V4L2_STD_NTSC*, the MPLANE capability flag, multiplanar types
(VIDEO_MAX_PLANES, v4l2_plane_pix_format, v4l2_pix_format_mplane,
V4L2_TYPE_IS_MULTIPLANAR), V4L2_PIX_FMT_JPEG/YUV411P/SN9C10X, and the
MPEG control class (V4L2_CID_MPEG_BASE, V4L2_CID_MPEG_VIDEO_B_FRAMES).

video(4) capture devices are digital-only and never expose these, but
ffmpeg's libavdevice/v4l2.c and opencv's cap_v4l.cpp both reference
them unconditionally. Fixes their build against sys/videoio.h.

PR: 297454

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Repository

rG FreeBSD src repository

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Event Timeline

seuros created this revision.Aug 12 2026, 11:07 AM

Herald added a subscriber: imp. · View Herald TranscriptAug 12 2026, 11:07 AM

seuros requested review of this revision.Aug 12 2026, 11:07 AM

Harbormaster completed remote builds in B75530: Diff 183907.Aug 12 2026, 11:07 AM

add more symbols

Harbormaster completed remote builds in B75532: Diff 183909.Aug 12 2026, 11:32 AM

dan.kotowski_a9development.com added a subscriber: dan.kotowski_a9development.com.Aug 12 2026, 12:06 PM

looks good, please add a second diff in the stack that increments sys/param.h __FreeBSD_version from 1600019 to 1600020 and add a quick note in UPDATING that the new video refactor has landed and sys/videoio.h is now provided as the API to communicate with it.

That way ports that need to know about the changeover window can just do it based on __FreeBSD_version .