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[media] vidioc-queryctrl.rst: document V4L2_CTRL_FLAG_MODIFY_LAYOUT

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Document this new control flag.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Hans Verkuil 2017-04-10 16:14:25 -03:00 committed by Mauro Carvalho Chehab
parent 0ac702d5b9
commit bf587efff1
2 changed files with 14 additions and 0 deletions
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13
Documentation/media/uapi/v4l/vidioc-queryctrl.rst
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@ -507,6 +507,19 @@ See also the examples in :ref:`control`.
represents an action on the hardware. For example: clearing an
error flag or triggering the flash. All the controls of the type
``V4L2_CTRL_TYPE_BUTTON`` have this flag set.
* .. _FLAG_MODIFY_LAYOUT:
- ``V4L2_CTRL_FLAG_MODIFY_LAYOUT``
- 0x0400
- Changing this control value may modify the layout of the
buffer (for video devices) or the media bus format (for sub-devices).
A typical example would be the ``V4L2_CID_ROTATE`` control.
Note that typically controls with this flag will also set the
``V4L2_CTRL_FLAG_GRABBED`` flag when buffers are allocated or
streaming is in progress since most drivers do not support changing
the format in that case.
Return Value

1
Documentation/media/videodev2.h.rst.exceptions
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@ -341,6 +341,7 @@ replace define V4L2_CTRL_FLAG_WRITE_ONLY control-flags
replace define V4L2_CTRL_FLAG_VOLATILE control-flags
replace define V4L2_CTRL_FLAG_HAS_PAYLOAD control-flags
replace define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE control-flags
replace define V4L2_CTRL_FLAG_MODIFY_LAYOUT control-flags
replace define V4L2_CTRL_FLAG_NEXT_CTRL control
replace define V4L2_CTRL_FLAG_NEXT_COMPOUND control