Web Version of a Sketch Crashes?

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hndrsn6

Web Version of a Sketch Crashes?

in Programming Questions • 3 years ago

Hello!
I've written a sketch that generates music based on the fibonacci sequence - and I'm using the Ess library for sound synthesis. It works fine for long periods of time when I run it straight from processing, but when I uploaded it to openprocessing there's a bug - after about a minute the applet crashes and stops advancing to the next step. Has anyone got any ideas as to why there might be a problem? I've tried it in the latest versions of safari and firefox for mac os 10.4. Maybe there's too much going on in the sketch?

Find it here:
http://openprocessing.org/visuals/?visualID=10651

Any ideas would be greatly appreciated!

Replies(4)

antiplast..

Re: Web Version of a Sketch Crashes?

3 years ago

Did you read this? There are some tips and guidelines :
http://wiki.processing.org/w/Troubleshooting#Export_and_Browser_Troubles

If it doesn't work better, try to check what's wrong in the Java console. There should be errors reported.

hndrsn6

Re: Web Version of a Sketch Crashes?

3 years ago

Hey, thanks for the reply. I checked the console - no messages. I don't seem to be infringing on any known issues with web applets either. Strange.

PhiLho

Re: Web Version of a Sketch Crashes?

3 years ago

I haven't checked your applet, but a potential cause of such behavior (crash after a while) might be an out of memory error (not sure if it is reported in the console).
Or accessing some resource not available.
Perhaps you can sprinkle your code with println() at important locations, like entering a function. So at least you can see, by looking at the last one, where it crashes...

hndrsn6

Re: Web Version of a Sketch Crashes?

3 years ago

I have a feeling that it is an out of memory situation - perhaps there is a lot going on in the sound synthesis part of the code.

Should I be "killing off" the previous SineWave every time I generate a new one?

//synthesize sound

void playSine(int result) {

  ac = new AudioChannel();

  ac.initChannel(ac.frames(envelopeLength));

  //generate sinewave

  sine=new SineWave(result, 0.1);

  sine.generate(ac, 0, ac.frames(envelopeLength));

  //gain envelope

  EPoint[] env=new EPoint[3];

  env[0]=new EPoint(0,0);

  env[1]=new EPoint(0.1,0.1);

  env[2]=new EPoint(envelopeLength/1000,0);

  myEnvelope=new Envelope(env);

  myEnvelope.filter(ac);

  ac.gain(-volume);

  //normalize volume

  nrmlz = new Normalize();

  nrmlz.filter(ac, 0, ac.frames(envelopeLength));

  ac.play();

}

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Web Version of a Sketch Crashes?

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