SYNOPSIS

int v4l2_ctrl_modify_range(struct v4l2_ctrl * ctrl, s64 min, s64 max, u64 step, s64 def);

ARGUMENTS

ctrl

The control to update.

min

The control's minimum value.

max

The control's maximum value.

step

The control's step value

def

The control's default value.

DESCRIPTION

Update the range of a control on the fly. This works for control types INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the step value is interpreted as a menu_skip_mask.

An error is returned if one of the range arguments is invalid for this control type.

This function assumes that the control handler is not locked and will take the lock itself.

COPYRIGHT