Get Line In by Damien Di Fede. This sketch demonstrates how to use the <code>getLineIn</code> method of <code>Minim</code>. This method returns an <code>AudioInput</code> object. An <code>AudioInput</code> represents a connection to the computer's current record source (usually the line-in) and is used to monitor audio coming from an external source. There are five versions of <code>getLineIn</code>: <pre> getLineIn() getLineIn(int type) getLineIn(int type, int bufferSize) getLineIn(int type, int bufferSize, float sampleRate) getLineIn(int type, int bufferSize, float sampleRate, int bitDepth) </pre> The value you can use for <code>type</code> is either <code>Minim.MONO</code> or <code>Minim.STEREO</code>. <code>bufferSize</code> specifies how large you want the sample buffer to be, <code>sampleRate</code> specifies the sample rate you want to monitor at, and <code>bitDepth</code> specifies what bit depth you want to monitor at. <code>type</code> defaults to <code>Minim.STEREO</code>, <code>bufferSize</code> defaults to 1024, <code>sampleRate</code> defaults to 44100, and <code>bitDepth</code> defaults to 16. If an <code>AudioInput</code> cannot be created with the properties you request, <code>Minim</code> will report an error and return <code>null</code>. When you run your sketch as an applet you will need to sign it in order to get an input. Before you exit your sketch make sure you call the <code>close</code> method of any <code>AudioInput</code>'s you have received from <code>getLineIn</code>.

  
  
  import ddf.minim.*;
  
  Minim minim;
  AudioInput in;
  
  void setup()
  {
    size(512, 200, P3D);
  
    minim = new Minim(this);
    minim.debugOn();
    
    // get a line in from Minim, default bit depth is 16
    in = minim.getLineIn(Minim.STEREO, 512);
  }
  
  void draw()
  {
    background(0);
    stroke(255);
    
    // draw the waveforms
    for(int i = 0; i < in.bufferSize() - 1; i++)
    {
      line(i, 50 + in.left.get(i)*50, i+1, 50 + in.left.get(i+1)*50);
      line(i, 150 + in.right.get(i)*50, i+1, 150 + in.right.get(i+1)*50);
    }
  }
  
  void stop()
  {
    // always close Minim audio classes when you are done with them
    in.close();
    minim.stop();
    
    super.stop();
  }
  

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[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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(C) Æliens 20/2/2008

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