Function gstreamer_video_sys::gst_video_transfer_function_is_equivalent

pub unsafe extern "C" fn gst_video_transfer_function_is_equivalent(
    from_func: GstVideoTransferFunction, 
    from_bpp: c_uint, 
    to_func: GstVideoTransferFunction, 
    to_bpp: c_uint
) -> gboolean

This is supported on crate feature v1_18 only.