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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2017-04-10 16:14:25 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-04-14 22:53:36 -0300 |
| commit | bf587efff165e0563cc9d2227e49eeba7eb50434 (patch) | |
| tree | bdebd6a64f05f539a53254952744bcf4401b80e2 /Documentation/media/uapi/v4l/vidioc-queryctrl.rst | |
| parent | 0ac702d5b903d441ef64e61f453de7c0ce1322fa (diff) | |
[media] vidioc-queryctrl.rst: document V4L2_CTRL_FLAG_MODIFY_LAYOUT
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>
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-queryctrl.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/vidioc-queryctrl.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst index 82769de801b1..1ffdc3f3c614 100644 --- a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst +++ b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst @@ -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 |