From bf587efff165e0563cc9d2227e49eeba7eb50434 Mon Sep 17 00:00:00 2001 From: Hans Verkuil <hans.verkuil@cisco.com> Date: Mon, 10 Apr 2017 16:14:25 -0300 Subject: [PATCH] [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> --- Documentation/media/uapi/v4l/vidioc-queryctrl.rst | 13 +++++++++++++ Documentation/media/videodev2.h.rst.exceptions | 1 + 2 files changed, 14 insertions(+) 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 diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index c9c611b18ba1..a5cb0a8686ac 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -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 -- GitLab