How to play random sound file when clicking an item within a scrollable list (controlP5 library)?

Neowso

I'm using the 'scrollableList' from the controlP5 library. I wish to simply play a random sound file each time I click an element on the scrollable list, without pausing.

I have tried a few things. I am having limited success with some code from @akenaton that I found in this thread: https://forum.processing.org/two/discussion/8949/how-do-i-play-a-random-audio-sample

I merged that code with the scrollable list. So far, I'm only managing to pause the audio on clicking the menu. I am probably missing something obvious.

As ever, any tips much appreciated :)

import ddf.minim.*;
import controlP5.*;
import java.util.*;
AudioPlayer player;
Minim minim;
ControlP5 cp5;

boolean playeurInit = false;// que leplayer n'est pas lancé
boolean stop = true;

String[] table = {"train1.wav", "train2.wav"};

int randomWav; 
String wav; 

void setup() {
  size(400, 400);

  minim = new Minim(this);
  int randomWav = int(random(table.length));
  String son = table[randomWav];
  //println(son);
  player = minim.loadFile(son);
  player.pause();   

  cp5 = new ControlP5(this);
  List l = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h");
  cp5.addScrollableList("dropdown").setPosition(10, 10).setSize(200, 100).setBarHeight(20).setItemHeight(20).addItems(l);   
}


void draw() {
  background(240);
  if (!stop) {
    if (player.isPlaying() == false) {
          randomWav = int(random(table.length));
          println(randomWav);
          wav = table[randomWav];
          player = minim.loadFile(wav);
          player.play();
          player.loop();//you can change that!
          playeurInit = true;
     }
  }
}


void dropdown(int n) {
  if(stop == true)
  {
    stop = false;
  }else{
    stop = true;
    player.play();
    if (player.isPlaying() == true ) 
    {
      player.pause();
      //player.play();
    }
  }

  CColor c = new CColor();
  c.setBackground(color(255,0,0));
  cp5.get(ScrollableList.class, "dropdown").getItem(n).put("color", c);
}


void stop(){
  player.close();
  minim.stop();
  super.stop();
}

kfrajer

Check the code below. No need to call play() and loop(). You need only the former.

Kf

import ddf.minim.*;
import controlP5.*;
import java.util.*;
AudioPlayer player;
Minim minim;
ControlP5 cp5;

boolean playeurInit = false;// que leplayer n'est pas lancé
boolean tgr = false;

String[] table = {"button-3.mp3", "button-7.mp3"};

int randomWav; 
String wav; 

void setup() {
  size(400, 400);

  minim = new Minim(this);
  int randomWav = int(random(table.length));
  String son = table[randomWav];
  //println(son);
  player = minim.loadFile(son);
  player.pause();   

  cp5 = new ControlP5(this);
  List l = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h");
  cp5.addScrollableList("dropdown").setPosition(10, 10).setSize(200, 100).setBarHeight(20).setItemHeight(20).addItems(l);   
}


void draw() {
  background(240);
  if(frameCount%60==0) println(tgr,player.isPlaying());
  if (tgr) {
    tgr=false;
    if (player.isPlaying() == false) {
          randomWav = int(random(table.length));
          println(randomWav);
          wav = table[randomWav];
          player = minim.loadFile(wav);
          player.play();
          //player.loop();//you can change that!
          playeurInit = true;
     }
  }
}


void dropdown(int n) {
  if(tgr == false)
  {    
    tgr = true;
    //player.play();
    //if (player.isPlaying() == true ) 
    //{
    //  player.pause();
    //  //player.play();
    //}
  }

  CColor c = new CColor();
  c.setBackground(color(255,0,0));
  cp5.get(ScrollableList.class, "dropdown").getItem(n).put("color", c);
}

Neowso

Thanks, @kfrajer. I am running the code now but it does not randomise each of my two wav files?

Neowso

I simplified my scenario to just using a keypress 'L' to randomise. But in doing so I run into more trouble. The previous sound file seems to always keep playing when the new randomly chosen one starts. So, if I press 'L' many times many samples play once. I wish for each new sample to stop the previous.

Here's the gist of that code:

void keyPressed()
{
  if ( key == 'l' ) { 
    int randomWav = int(random(table.length));
    wav = table[randomWav];
    player = minim.loadFile(wav);
    player.pause();
    player.rewind();
  }
  player.play();
}

kfrajer

I tested the code with two very short "noises". They are random. Maybe you didn't try enough times? J/k... it plays only the first one or the second one? Just to have an idea, how long are each file when you play them?

Kf

Neowso

These are 3minute long atmos files. I also need one to stop right when the next is triggered. I tried many times yes, they don't randomise and I'm sure I have correct samples loaded.

kfrajer

Modified from: https://forum.processing.org/two/discussion/21316/how-do-i-play-the-same-soundfile-multiple-times-simultaneously

Tested.

Kf

import ddf.minim.*;
AudioPlayer[] mplayer;
Minim minim;

//String[] songs={"cr1.mp3", "co2.mp3", "dj3.mp3"};
String[] songs={"aa.mp3", "bb.mp3", "cc.mp3"};
int idx=0;

void setup() {
  // randomSeed(int(random(1, 10000)));
  size(200, 200);
  background(255);
  frameRate(60);
  minim = new Minim(this);
  mplayer=new AudioPlayer[3];

  for (int i=0; i<songs.length; i++) {
    mplayer[i] = minim.loadFile(songs[i]);
    mplayer[i].play();
    mplayer[i].pause();
  }
}

void draw() {
}


void mouseReleased() {
  mplayer[idx].pause();
  idx=(int)random(songs.length);
  mplayer[idx].rewind();
  mplayer[idx].play();
  println("YES... lucky one is "+idx);
}

Keywords: kf_keyword minim multiple sound files

Neowso

Excellent stuff. Thank you very much, @krajer. And it fits into the scrollable list code nicely too :)

import ddf.minim.*;
import controlP5.*;
import java.util.*;
AudioPlayer[] mplayer;
Minim minim;
ControlP5 cp5;

String[] songs={"train1.wav", "malechant.wav"};
int idx=0;


void setup() {
  size(400, 400);

  minim = new Minim(this);
  mplayer=new AudioPlayer[2];

  for (int i=0; i<songs.length; i++) {
    mplayer[i] = minim.loadFile(songs[i]);
    mplayer[i].play();
    mplayer[i].pause();
  }

  cp5 = new ControlP5(this);
  List l = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h");
  cp5.addScrollableList("dropdown").setPosition(10, 10).setSize(200, 100).setBarHeight(20).setItemHeight(20).addItems(l);   
}


void draw() {
  background(240);
}


void dropdown(int n) {
  mplayer[idx].pause();
  idx=(int)random(songs.length);
  mplayer[idx].rewind();
  mplayer[idx].play();
  println("YES... lucky one is "+idx);

  CColor c = new CColor();
  c.setBackground(color(255,0,0));
  cp5.get(ScrollableList.class, "dropdown").getItem(n).put("color", c);
}