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The UVC driver provides two metadata types V4L2_META_FMT_UVC, and V4L2_META_FMT_D4XX. The only difference between the two of them is that V4L2_META_FMT_UVC only copies PTS, SCR, size and flags, and V4L2_META_FMT_D4XX copies the whole metadata section. Now we only enable V4L2_META_FMT_D4XX for the Intel D4xx family of devices, but it is useful to have the whole metadata payload for any device where vendors include other metadata, such as the one described by Microsoft: https://learn.microsoft.com/en-us/windows-hardware/drivers/stream/mf-capture-metadata This patch introduces a new format V4L2_META_FMT_UVC_MSXU_1_5, that is identical to V4L2_META_FMT_D4XX. Let the user enable this format with a quirk for now. This way they can test if their devices provide useful metadata without rebuilding the kernel. They can later contribute patches to auto-quirk their devices. We will also work in methods to auto-detect devices compatible with this new metadata format. Suggested-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Hans de Goede <hansg@kernel.org> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Link: https://lore.kernel.org/r/20250707-uvc-meta-v8-4-ed17f8b1218b@chromium.org Signed-off-by: Hans de Goede <hansg@kernel.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> |
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