Some sound issues... 😬

Grimm · May 11, 2019, 10:37am

It’s still me, this time it’s about Sound.

SoundChannel can’t be controlled immediately. For example, the actual effect of the following code is that sound still plays in the background.
sound.play().stop();
The interval duration between repeated sounds is longer.
sound.play(0, 100);
Sometimes the sound is intermittent and the position of SoundChannel instance is inaccurate.

singmajesty · May 13, 2019, 4:51pm

It looks like play().stop() is calling howl.play() then howl.stop() in Howler.js (HTML5 target)

Repeating the sound appears to also call howl.stop() then howl.play() immediately

We also use howl.seek() in order to get the current time

Grimm · June 1, 2019, 6:42pm

Yes, everything is because of the library of howler.js.
Because it has too many unmanaged setTimeout inside, it often causes sound play repeat unexpectedly and the SoundChannel out of control.

The temp solution is to modify:

github.com

goldfire/howler.js/blob/030db918dd8ce640afd57e172418472497e8f113/src/howler.core.js#L892




// Set param values immediately.
setParams();


// Releases the lock and executes queued actions.
play
  .then(function() {
    self._playLock = false;
    node._unlocked = true;
    if (!internal) {
      self._emit('play', sound._id);
      self._loadQueue();
    }
  })
  .catch(function() {
    self._playLock = false;
    self._emit('playerror', sound._id, 'Playback was unable to start. This is most commonly an issue ' +
      'on mobile devices and Chrome where playback was not within a user interaction.');


    // Reset the ended and paused values.
    sound._ended = true;

to

var isplaying = true;
if (self._queue.length > 0)
{
    var last_queue_event = self._queue[self._queue.length - 1].event;
    if (last_queue_event == 'stop' || last_queue_event == 'pause')
    {
        self._queue.splice(0, self._queue.length - 1);
        isplaying = false;
    }
}
if (isplaying)
{
    self._emit('play', sound._id);
}

I think howler.js is not suitable for openfl project at all, it leads to many issues.(Sorry to the author, but it is the truth. )

How about rebuilding the Howl class? I am willing to make some contribution for it.

singmajesty · June 3, 2019, 8:43pm

Do you recommend another library?

Would it make sense to submit a pull request with fixes to the library instead?

Grimm · June 4, 2019, 12:21am

Maybe we can rewrite howler.js ?