diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-queryctrl.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/vidioc-queryctrl.rst | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst index 82769de801b1..41c5744a1239 100644 --- a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst +++ b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst @@ -301,12 +301,12 @@ See also the examples in :ref:`control`. - ``name``\ [32] - Name of the menu item, a NUL-terminated ASCII string. This information is intended for the user. This field is valid for - ``V4L2_CTRL_FLAG_MENU`` type controls. + ``V4L2_CTRL_TYPE_MENU`` type controls. * - - __s64 - ``value`` - Value of the integer menu item. This field is valid for - ``V4L2_CTRL_FLAG_INTEGER_MENU`` type controls. + ``V4L2_CTRL_TYPE_INTEGER_MENU`` type controls. * - __u32 - - ``reserved`` @@ -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 |