InterruptedException when attampting to play audio from soundcloud

[sedmelluq]

InterruptedException when attampting to play audio from soundcloud

[sedmelluq]

It seems as if something is calling Thread#interrupt() on that thread. The library itself should only ever trigger interrupts on the threads which fill the audio buffers, so I can't think of how it could be the cause.

If you can reproduce it locally, maybe you can set a breakpoint on Thread#interrupt() to see what is calling it for that thread?

[R3alCl0ud]

I can reproduce it every time, and it happens on both my Desktop(running win10 and jdk1.8_121) and my macbook pro (running Mac OS X El Capitan and jdk1.8_60)

[R3alCl0ud]

Well I figured out the cause, There was multiple threads trying to call <AudioPlayer>.provide() to send the next packet to the udpSocket. But, it just fails to load tracks from soundcloud altogether now.

[R3alCl0ud]

So, I figured out that tracks from Sound Cloud need some time before they can be played.

[sedmelluq]

Still does not resolve your core problem that at the moment you call .provide(), your thread is in the interrupted state. The code which throws the actual exception:

        if (Thread.interrupted())
            throw new InterruptedException();

While your thread is in that state, any blocking operation may throw an exception like that.

[R3alCl0ud]

Ok, but while I was running through the stack trace in debug with the break point I set I noticed that if a SoundCloudAudioTrack is played as soon as AudioLoadResultHandler#trackLoaded(AudioTrack track) is called it hasn't started to load the audio and ends with LOAD_FAILED before beginning to load the audio.

I noticed this because AudioPlayer#provide() wasn't throwing the error until it had been called like 13~16 times, and each of those times it returned a terminator frame.

But if I put a youtube track in before the soundcloud track and let it play through the youtube one, it was able to load the one from soundcloud.

[R3alCl0ud]

also I don't start calling AudioPlayer#provide() until after AudioEventAdapter#onTrackStart() is called, which usually happens a few seconds after I call AudioPlayer#playTrack(track)

[sedmelluq]

If you ever get LOAD_FAILED, get the stack trace as well. Terminator frame is only produced once per track (and is consumed by AudioPlayer internally).

Did you ever find what was interrupting that thread though?

[R3alCl0ud]

I'm pretty sure that my code was borked and was trying to call AudioPlayer#provide() several times before AudioPlayer#provide() was able to return an AudioFrame for any of the calls.

Either way I have already fixed the issue on my end, so I'm going to close this issue.