Function JxlDecoderSubscribeEvents 

pub unsafe extern "C-unwind" fn JxlDecoderSubscribeEvents(
    dec: *mut JxlDecoder,
    events_wanted: c_int,
) -> JxlDecoderStatus

Select for which informative events, i.e. JxlDecoderStatus::BasicInfo, etc., the decoder should return with a status. It is not required to subscribe to any events, data can still be requested from the decoder as soon as it is available. By default, the decoder is subscribed to no events (events_wanted == 0), and the decoder will then only return when it cannot continue because it needs more input data or more output buffer. This function may only be called before using JxlDecoderProcessInput.

Parameters

• dec: decoder object
• events_wanted: bitfield of desired events.

Returns

• JxlDecoderStatus::Success if no error, JxlDecoderStatus::Error otherwise.