Hello

I've got a question, I'm trying to do an applet to play mp3, and let browse within it, but, using minim, it usually take something like 4 to 8 seconds before the song begin again.
Another strange thing is that song.position() begin to give the new position a couple of second before the song begin again.
With this, by exemple, the exemple of scrubbing is useless.
Another strange thing is that, sometime, the playing doesn't begin at the beggining of the song, but something like 20 second after.

Is there anything I could do?

Hi,

I've got a related question. I'm trying to write a java app that lets users jump to different locations in a long audio file.  I don't care so much about speed for now; it's no problem if the app hangs for a few seconds between each seek operation.  My problem is that, right now, the program crashes with an "Out of Memory Error" every time I try to jump any sizable distance.  Jumps of small distances, on the order of a few seconds, work file.  Jumps of big distances, on the order of minutes, raise the error and make the program crash.

I'm including a functional sketch that replicates the error. Just add audio.  (... to the data folder, and name it "audio.wav".)

If there any way I can get this sort of seeking/scrubbing working with Minim?  If not, is there another sound library I could use?  I'm doing most of my development in Eclipse, so I'm not restricted to Processing audio libraries.

Many thanks in advance for your help. :)

Best wishes,



Dave

Code:

/**
 * Based on Load Sample by Damien Di Fede.
 */

import ddf.minim.*;

Minim minim;
AudioPlayer longSound;

int RECT_WIDTH = 400;
int RECT_OFFSET = 50;
float normalizedPosition;
int newPosition;
int soundLength;
int playHeadPos;


void setup()
{
  size(500, 200, P2D);
  minim = new Minim(this);
  longSound = minim.loadFile("brahms.wav", 2048);
  
  textMode(SCREEN);
  textFont(createFont("SanSerif", 12));

}

void draw()
{
  background(0);
  rectMode(CORNER);
  rect(RECT_OFFSET,50,RECT_WIDTH,100);
  text("Position in file: "+longSound.position()+" ms",5,15);
  longSound.play();
  
  rectMode(CENTER);
  playHeadPos = round(RECT_OFFSET + RECT_WIDTH*longSound.position()/(float)longSound.length());
  rect(playHeadPos,100,10,160);
  
  text("Click in the box to jump to a new location in the file.",100,180);
  
}

void mousePressed()
{
  normalizedPosition = (mouseX-RECT_OFFSET) / (float)RECT_WIDTH;
  newPosition = round(normalizedPosition * longSound.length());
  longSound.cue(newPosition);
}

void stop()
{
  // always close Minim audio classes when you are done with them
  longSound.close();
  minim.stop();
  
  super.stop();
} 

Hi Cedric,

Thanks -- don't know why I didn't think of that myself.  Increasing the memory does indeed keep the program from crashing.  That's a good enough solution for now.  Excellent.

That said, ultimately, I'm still interested in implementing scrubbing without having to allocate oodles of memory.  This seems like it should be possible, at least in theory...  Can anyone give any pointers on how this could be done, either using Minim, or some other audio library?

Thanks, and best wishes,




Dave

Yah, I figured out why the out of memory stuff was happening and it will be fixed in the next release, which should be available in the next day or two.