recording internal audio #123
Description
I want to record internal audio in processing. I have modified and tried one of the examples. My code is as follows. Should I add something in setup?
/**
- This sketch demonstrates how to use an
AudioRecorderto record audio to disk. - Press 'r' to toggle recording on and off and the press 's' to save to disk.
- The recorded file will be placed in the sketch folder of the sketch.
-
- For more information about Minim and additional features,
- visit http://code.compartmental.net/minim/
*/
import ddf.minim.;
import ddf.minim.ugens.;
Minim minim;
AudioOutput out;
AudioRecorder recorder;
void setup()
{
size(512, 200, P3D);
minim = new Minim(this);
out = minim.getLineOut();
// create a recorder that will record from the output to the filename specified
// the file will be located in the sketch's root folder.
recorder = minim.createRecorder(out, "myrecording.wav");
textFont(createFont("Arial", 12));
}
void draw()
{
background(0);
stroke(255);
// draw the waveforms
// the values returned by left.get() and right.get() will be between -1 and 1,
// so we need to scale them up to see the waveform
for(int i = 0; i < out.bufferSize() - 1; i++)
{
line(i, 50 + out.left.get(i)*50, i+1, 50 + out.left.get(i+1)*50);
line(i, 150 + out.right.get(i)*50, i+1, 150 + out.right.get(i+1)*50);
}
if ( recorder.isRecording() )
{
text("Currently recording...", 5, 15);
}
else
{
text("Not recording.", 5, 15);
}
}
void keyReleased()
{
if ( key == 'r' )
{
// to indicate that you want to start or stop capturing audio data, you must call
// beginRecord() and endRecord() on the AudioRecorder object. You can start and stop
// as many times as you like, the audio data will be appended to the end of the buffer
// (in the case of buffered recording) or to the end of the file (in the case of streamed recording).
if ( recorder.isRecording() )
{
recorder.endRecord();
}
else
{
recorder.beginRecord();
}
}
if ( key == 's' )
{
// we've filled the file out buffer,
// now write it to the file we specified in createRecorder
// in the case of buffered recording, if the buffer is large,
// this will appear to freeze the sketch for sometime
// in the case of streamed recording,
// it will not freeze as the data is already in the file and all that is being done
// is closing the file.
// the method returns the recorded audio as an AudioRecording,
// see the example AudioRecorder >> RecordAndPlayback for more about that
recorder.save();
println("Done saving.");
}
}