Minim Problem

Core Library Questions

bigdogdk

in Core Library Questions • 1 year ago

Im trying to play an audio file in a program. I had it working but when i went to convert it into a class it wont work.

song song;

void setup (){
song = new song();
}

void draw(){
song.play();
}

import ddf.minim.*;
//import processing.core.*;

class song {
Minim minim;
AudioPlayer song;

song() {
}

void play()
{
    size(100, 100);

song

    // this loads mysong.wav from the data folder
    song = minim.loadFile("12.wav");
    song.play();
}

void draw()
{
    background(0);
}

void stop()
{
    song.close();
    minim.stop();

    super.stop();
}
}

Edit: The error im getting is "cannot convert from AudioPlayer to audio_test.song".

Replies(11)

PhiLho

I find slightly wrong to have three different things with the same name: the class name (by tradition, we prefer uppercase initial for class names), the variable of same type, and a field inside the class... Perhaps that's not a problem at Java level, but it feels confusing.
The alone song word in play() is strange too...
And, well, you should keep the size() call in setup().

Fixing all that might solve your problem...

bigdogdk

Re: Minim Problem

1 year ago

Ok I changed that now im getting NullPointerException with the song = minim.loadFile("12.wav"); line. And with the super.stop(); im getting "the function stop() does not exist.

PhiLho

Re: Minim Problem

1 year ago

That's because you haven't initialized the minim variable, and the stop() method must remain global. minim must be global too.

bigdogdk

Re: Minim Problem

1 year ago

Ok i moved the Song = minim loadFile('12.wav'); into global, but now i get the error "Badly formed character constant." I found this post that talked about it was it supposed to of been fixed in 1.5.1 or in 2.0?

import ddf.minim.*;
//import processing.core.*;

class Song {
Minim minim;
AudioPlayer Song;
    Song = minim.loadFile('12.wav');

Song() {
}

void play()
{


    // this loads mysong.wav from the data folder
    Song.play();
}

void draw()
{
    background(0);
}

void stop()
{
    Song.close();
    minim.stop();

//    super.stop();
}
}

Edit: here is what im getting in the debug console.

processing.app.SketchException: Badly formed character constant
    at processing.mode.java.preproc.PdePreprocessor.checkForUnterminatedMultilineComment(PdePreprocessor.java:266)
    at processing.mode.java.preproc.PdePreprocessor.write(PdePreprocessor.java:299)
    at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:261)
    at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:197)
    at processing.mode.java.JavaBuild.build(JavaBuild.java:156)
    at processing.mode.java.JavaBuild.build(JavaBuild.java:135)
    at processing.mode.java.JavaMode.handleRun(JavaMode.java:176)
    at processing.mode.java.JavaEditor$20.run(JavaEditor.java:481)
    at java.lang.Thread.run(Thread.java:722)

PhiLho

Re: Minim Problem

1 year ago

Still with a variable name identical to the class name...
Lines like the one in yellow must be in a method, eg. in the constructor.

bigdogdk

Re: Minim Problem

1 year ago

I've been working on it i got it to stop the "Badly formed character constant" error but now when i run it it freezes.

import ddf.minim.*;
AudioPlayer music;
Minim minim;
Song Song;

void setup () {
size(100, 100);
Song = new Song();
minim = new Minim (this);
}

void draw() {
Song.play();
Song.stop();
super.stop();
}

class Song {
//    Minim.start();
Song() {
    //    music = new music(this);
}

void play()
{
    music = minim.loadFile("12.wav");

    // this loads mysong.wav from the data folder
    Song.play();
}

void stop() {
    music.close();
    minim.stop();
}
}

bigdogdk

Re: Minim Problem

1 year ago

I figured it out the it was starting the song then immediately stopping it, but now the song doesn't sound right. It sounds slowed and distorted. What could I do to fix that.

bigdogdk

Re: Minim Problem

1 year ago

I reduced the frameRate to 1 and now it sounds better but now i noticed it's starting the file twice about 1 - 2 seconds later. What could be causing this?

I figured out the stopping issue.

import ddf.minim.*;
AudioPlayer music;
Minim minim;
Song Song;

void setup () {
size(100, 100);
frameRate(1);
Song = new Song();
minim = new Minim (this);
}

void draw() {
Song.play();
}

public void stop(){
Song.stop();
super.stop();
}

PhiLho

Re: Minim Problem

1 year ago

I am not a specialist of Minim, in general you should take a look at the examples of Processing to see how things are done.
But I don't think you should call play() on each frame. You are supposed to call it only once, at least until the sequence ends.

Jonny Stu..

Re: Minim Problem

1 year ago

I reduced the frameRate to 1 and now it sounds better but now i noticed it's starting the file twice about 1 - 2 seconds later. What could be causing this?

It won't start playing until the next frame is drawn which will take up to a second if you've set the frameRate to 1. Also PhiLho is correct - you don't want to be calling play() every frame, call it when frameCount == 1 or set a boolean to prevent repeated calls (I think you can call from setup() which gets round all this but I can't test that at the moment).

Generally speaking if you're having to do something like setting the frameRate extremely low to get things working there's something wrong with your design.

bigdogdk

Re: Minim Problem

1 year ago

It works perfectly now thank you both very much.

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