Repeated use of Envelopes eventually causes java.lang.NullPointerException · Issue #29 · processing/processing-sound (original) (raw)

Hello,

I'm getting the following console error after intermittent intervals when using the processing.sound library. The sound cuts out, but the sketch continues to run.

Error

java.lang.NullPointerException
    at com.jsyn.ports.InputMixingBlockPart.getValues(Unknown Source)
    at com.jsyn.ports.UnitBlockPort.getValues(Unknown Source)
    at com.jsyn.unitgen.SineOscillator.generate(Unknown Source)
    at com.jsyn.unitgen.UnitGenerator.pullData(Unknown Source)
    at com.jsyn.ports.PortBlockPart.pullData(Unknown Source)
    at com.jsyn.ports.UnitInputPort.pullData(Unknown Source)
    at com.jsyn.unitgen.UnitGenerator.pullData(Unknown Source)
    at com.jsyn.ports.PortBlockPart.pullData(Unknown Source)
    at com.jsyn.ports.UnitInputPort.pullData(Unknown Source)
    at com.jsyn.unitgen.UnitGenerator.pullData(Unknown Source)
    at com.jsyn.ports.PortBlockPart.pullData(Unknown Source)
    at com.jsyn.ports.UnitInputPort.pullData(Unknown Source)
    at com.jsyn.unitgen.UnitGenerator.pullData(Unknown Source)
    at com.jsyn.ports.PortBlockPart.pullData(Unknown Source)
    at com.jsyn.ports.UnitInputPort.pullData(Unknown Source)
    at com.jsyn.unitgen.UnitGenerator.pullData(Unknown Source)
    at com.jsyn.engine.SynthesisEngine.synthesizeBuffer(Unknown Source)
    at com.jsyn.engine.SynthesisEngine.generateNextBuffer(Unknown Source)
    at com.jsyn.engine.SynthesisEngine$EngineThread.run(Unknown Source)

I have not had a chance to test for long periods on another OS, but will do as soon as possible.

Setup

Code

//------------------------------------------------------------------------------------ import processing.sound.*; //------------------------------------------------------------------------------------ int[] note = {96, 93, 91, 89, 86, 84, 81, 79, 77, 74, 72, 69, 67, 65, 62, 60}; Env[] env; SinOsc[] sine; float attackTime = 0.004; float sustainTime = 0.004; float sustainLevel = 0.5; float releaseTime = 0.7; int beat = 0; int framesPerBeat = 7; //------------------------------------------------------------------------------------ void setup() { background(0); sine = new SinOsc[note.length]; env = new Env[note.length]; for (int i = 0; i < note.length; ++i) { sine[i] = new SinOsc(this); sine[i].freq(midi2Hz(note[i])); sine[i].amp(0.303); env[i] = new Env(this); } } //------------------------------------------------------------------------------------ void draw() { if (frameCount % framesPerBeat == 0) { env[beat].play(sine[beat], attackTime, sustainTime, sustainLevel, releaseTime); beat++; beat %= note.length; } } //------------------------------------------------------------------------------------ float midi2Hz(int midiNoteNumber) { return pow(2, float(midiNoteNumber - 69)/12.0) * 440.0f; }