media/v4l/vidioc-g-ext-ctrls.rst

61 relevant for pointer-type controls like strings), then the driver will
78 the :ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` ioctl. The controls will only be set if *all*
95 control), then this will also result in an ``EINVAL`` error code error.
102 If the device does not support requests, then ``EACCES`` will be returned.
104 then ``EINVAL`` will be returned.
107 request that has already been queued will result in an ``EBUSY`` error.
111 :ref:`VIDIOC_G_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>`, then it will return the
113 If the request is not yet completed, then this will result in an
116 The driver will only set/get these controls if all control values are
139 	size of the memory containing the payload, or that will receive
213 	handling controls will also accept a value of 0 here, meaning that
221 	``V4L2_CTRL_WHICH_CUR_VAL`` will return the current value of the
222 	control, ``V4L2_CTRL_WHICH_DEF_VAL`` will return the default
227 	does not support requests, then ``EACCES`` will be returned.
285 	``error_idx`` will just be set to the control that failed the
295 	If the device does not support requests, then ``EACCES`` will be returned.
297 	given, then ``EINVAL`` will be returned.