key pressed plays mp3 file

Core Library Questions

soyyo1234

in Core Library Questions • 11 months ago

Hi. I am a humble n00bie to the world of processing and I am trying to write a simple program that plays an mp3 file when a key is pressed. No images. Just audio. I thought I could maybe do this using a key pressed () program combined with a CreateOutput() but that doesn't seem to work when I take away the drawing aspect of it. When this didn't work, I looked into Minim and tried to adjust this:

import ddf.minim.*;

import ddf.minim.signals.*;

import ddf.minim.analysis.*;

import ddf.minim.effects.*;

Minim loader;

AudioPlayer player;

//audio player

createOutput(Homealone);

loader = new Documents.Homealone.mp3;

player = loader.loadFile("Homealone.mp3");

player.loop();

if (keyPressed == true){

//plays the sound effect "Homealone"

player = loader.loadFile("Homealone.mp3");

player.play();

}

I don't think the codes I have used are adjusted correctly....

Any ideas on how to do this would of GREAT GREAT HELP!

THANK YOU!!!!!!!!!!!!!!

Replies(8)

soyyo1234

Re: key pressed plays mp3 file

11 months ago

I also tried this but it seems Processing isn't locating the mp3 file. Is there a specific syntax for it or is the code ridiculously wrong?

PImage bg;

import ddf.minim.*;

AudioPlayer player;

Minim minim;

void setup() {

}

void draw() {

}

void keyPressed() {

player = minim.loadFile("FLIRT.mp3");

println ("Pressed" + millis());

}

void keyReleased() {

println("Released " + millis());

if ((key == 'a') || (key == 'a')) {

player.play();

}

PhiLho

Re: key pressed plays mp3 file

11 months ago

First code cannot work because the statements are automatically put in a setup() function, so your test is ran only once.
Second code, I don't know, but perhaps the file isn't loaded completely before you release the key. You should load it beforehand, in setup().

soyyo1234

Re: key pressed plays mp3 file

11 months ago

Thank you for your reply. I am only working with the 2nd code. When I try to run it,

player = minim.loadFIle("FLIRT.mp3"); is highlighted an I am told:

processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:190) at processing.core.PApplet.run(PApplet.java:2006)at java.long.Thread.run(Thread.java:680)

The FLIRT.mp3 file is not in a place where processing can access it?

I loaded the file directly into the sketch, and have placed it in Documents/Processing/Minim/examples/Minim/loadFile/data/FLIRT.mp3 (which is where the sample mp3 file was originally)

I am little confused....

PhiLho

Re: key pressed plays mp3 file

11 months ago

Start by moving the loading to setup(), show your code, and if you have an error, paste it integrally instead of taking two non-significant lines only.

PhiLho

Re: key pressed plays mp3 file

11 months ago

I see you applied my advice in a new thread, but since you started to ask here, it is a duplicate question so I deleted it...
Avoid asking the same question in two different places, please, it duplicates work for those wanting to help.
I took the time to look at the error and your code, and saw you haven't initialized the minim variable in setup(). Look at the examples of the Minim library to see how it is done.

See also the articles of the http://wiki.processing.org/w/Technical_FAQ they explain what is your NullPointerException and some other tricks. And, of course, the Learning section of the site...

soyyo1234

Re: key pressed plays mp3 file

11 months ago

Thank you for your patience and for referring me to the NullPointerException faq... I was able to fix that but now the file plays as soon as the window opens, instead of when a key is pressed... So the mp3 file plays and the console prints:

==== JavaSound Minim Error ====

==== Don't know the ID3 code TSS

==== JavaSound Minim Error ====

==== Error parsing ID3v2: String index out of range: -131

Here is my code:

PImage bg;
import ddf.minim.*;
Minim minim;
AudioPlayer player;
void setup()
{
minim = new Minim(this);
//load FLIRT.mp3 from Processing/minim/examples/Minim/loadFile/data/FLIRT.mp3
//player = minim.loadFile("FLIRT.mp3");
if (keyPressed);
player = minim.loadFile("FLIRT.mp3");
//play the file
player.play();
}
void draw()
{
if (keyPressed)
{
player = minim.loadFile("FLIRT.mp3");
}
}
void keyPressed()
{
player = minim.loadFile("FLIRT.mp3");
println ("Pressed" + millis());
}
void keyReleased()
{
println("Released " + millis());
}
void stop()
{
player.close();
minim.stop();
super.stop();
}

Have I called the keyPressed too many times and in too many places?

PhiLho

Re: key pressed plays mp3 file

11 months ago

" Have I called the keyPressed too many times and in too many places?"
Yes...

Load the file once, and play it on keyPressed().
Look at the LoadSample example in the Examples > Libraries > Minim Library (examples coming with Processing, can be loaded directly in the PDE).

soyyo1234

Re: key pressed plays mp3 file

11 months ago

Thank you for all your help!!!! It works now!

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