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The metadata buffer type is used to transfer metadata between userspace and kernelspace through a V4L2 buffers queue. It comes with a new metadata capture capability and format description. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> [hans.verkuil@cisco.com: removed left-over 'experimental' note] [hans.verkuil@cisco.com: add newline after _v4l2-meta-format label] Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> (cherry picked from commit fb9ffa6a7f7ef39cc0f14f417b66411be5492512) Conflicts: Documentation/media/uapi/v4l/buffer.rst Documentation/media/uapi/v4l/devices.rst Documentation/media/uapi/v4l/vidioc-querycap.rst Documentation/media/videodev2.h.rst.exceptions drivers/media/v4l2-core/v4l2-dev.c drivers/media/v4l2-core/videobuf2-v4l2.c include/media/v4l2-ioctl.h Deleted the documentation, as 4.4 is before the conversion to rst. BUG=b:66317170 TEST=compile Change-Id: Id43757c0a0b1f34e10d17e5345f89ded25503d13 Signed-off-by: Tomasz Figa <tfiga@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/676767 Reviewed-by: Ricky Liang <jcliang@chromium.org> Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>