I can't fire events

[Simoneth]

Hi,
I tried to fire events as:

     useEffect(() => {
        wavesurferRef.current.on("finish", () => {
            console.log("Track Finished");
          });
      }, []); 

It doesn't work, it doesn't fire when a song is finished.
Is it my fault?

[ShiiRochi]

@Simoneth, hi, did you try to check whether other events are being fired?

[Simoneth]

@Simoneth, hi, did you try to check whether other events are being fired?

Hmm...it's strange, I can fire "audioprocess" but not "finish" and I have no idea why.
This is my function to start play, maybe it's related (I use regions):

   wavesurferRef.current.play(
      regionsRef.current[id].start,
      regionsRef.current[id].end
    );

[ShiiRochi]

So, you can subscribe to "audioprocess" event and it's working, but it does not work with "finished", don't you?

If that is so, then event subscription through wavesurfer instance is working, however finished event is not being fired for some reason that is, from my POV, wavesurfer.js related.

Also, it may be, that "finished" is called after record is played up to the end.

[ShiiRochi]

@Simoneth, I've tried to listen for "finish" event in demo fork.

The result is that this event is called when record playing is fully completed, it is not related to region or region play, because all you do to play region is just like make wavesurfer to play record's fragment, when "finish" is related to record.

It should also be taken into account, that the end of an audio can differ from the end of a region, so even if there would be a difference in a pair of milliseconds, then "finish" can be not fired...but this is just my assumption.

[Simoneth]

@Simoneth, I've tried to listen for "finish" event in demo fork.

The result is that this event is called when record playing is fully completed, it is not related to region or region play, because all you do to play region is just like make wavesurfer to play record's fragment, when "finish" is related to record.

It should also be taken into account, that the end of an audio can differ from the end of a region, so even if there would be a difference in a pair of milliseconds, then "finish" can be not fired...but this is just my assumption.

Since I use only regions, from Regions plugin page, I can't find any event that could fire the end of the region play...any workaround? It's just for my toggle button "Play / Stop"

[ShiiRochi]

@Simoneth, I think, that this question (how to listen to region play completed or simulate it) is more related to wavesurfer.js repository. From my point of view, you can add a new listener for...audioprocess or progress event (I don't remember all the list), but with explicit aim to call some callback when progress will reach region's end...I will provide you with some pseudo code, but the rest is fully up to you:

function callbackFn () {
    ...some code...
} // or useCallback...

// It will save you from referencing issues withing listeners
const callbackRef = useRef(callbackFn);

function playRegion ({ start, end, ...restOfRegion }) {
    ws.current.on("progress", (data) => {
        if (data === end) {
            callbackRef.current();
        }
    });

    ws.current.play(
      start,
      rend
    );
}

[Simoneth]

Here my simple solution:

    useEffect(() => {
        wavesurferRef.current.on("region-out", () => {
            console.log("Track Finished");
        });
    }, [regions]);