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| author | Ricardo Ribalda Delgado <ribalda@kernel.org> | 2019-10-07 12:06:34 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-10-10 11:38:02 -0300 |
| commit | 3f0a700624d0a4014998b2ed5c1f964aa1b784a6 (patch) | |
| tree | 915daca552e2b96bdb45928b50d915d7fea0730f /Documentation/media | |
| parent | 61fd036d01111679b01e4b92e6bd0cdd33809aea (diff) | |
media: Documentation: media: Describe V4L2_CID_UNIT_CELL_SIZE
New control to pass to userspace the width/height of a pixel. Which is
needed for calibration and lens selection.
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'Documentation/media')
| -rw-r--r-- | Documentation/media/uapi/v4l/ext-ctrls-image-source.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst b/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst index 2c3ab5796d76..2d3e2b83d6dd 100644 --- a/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst +++ b/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst @@ -55,3 +55,13 @@ Image Source Control IDs ``V4L2_CID_TEST_PATTERN_GREENB (integer)`` Test pattern green (next to blue) colour component. + +``V4L2_CID_UNIT_CELL_SIZE (struct)`` + This control returns the unit cell size in nanometers. The struct + :c:type:`v4l2_area` provides the width and the height in separate + fields to take into consideration asymmetric pixels. + This control does not take into consideration any possible hardware + binning. + The unit cell consists of the whole area of the pixel, sensitive and + non-sensitive. + This control is required for automatic calibration of sensors/cameras. |