v4l2_ctrl_g_ctrl_int64 — Helper function to get a 64-bit control's value from within a driver.
s64 v4l2_ctrl_g_ctrl_int64 ( | struct v4l2_ctrl * ctrl); |
This returns the control's value safely by going through the control framework. This function will lock the control's handler, so it cannot be used from within the v4l2_ctrl_ops functions.
This function is for 64-bit integer type controls only.