StuartM

buffer-analysis-through-mxj

Great that you fixed it :) Still please post your solution instead of erasing the question. This might help others. This Forum is about sharing knowledge...

Apologies, I realised that I have to be careful when publicly posting any of my work as they can be picked up by our university plagiarism checks.

I was attempting to access the buffer via mxj to then create functions which could perform certain types of non-real-time analysis of stored audio. The issue was that I couldn't work out how to actually use the method and was returning all types of errors...

So the fix was to look at the buf.op help file - which is located in /Cycling74/Max 6.1/Cycling74/java/help .

This file shows how the buf.op file and any buffer access mxj's should be used in max.

In the Java the methods should be executable to allow them to be run inside max. Therefore should be structured like this: 

public class ClassNameHere extends MaxObject{

        declareInlets(new int[]{DataTypes.ALL});

        declareOutlets(new int[]{DataTypes.ALL});

declareIO(1, 2); // this will declare how many inputs and outputs respectively

            set(a[0].toString());

public void NameOfMethodHere(final Atom[] a){

        MaxSystem.deferLow(new Executable() {

            public void execute() {

                float[] Example = MaxBuffer(Bufname, 1); // you can specify it to look for other channels where 1 is placed

        ); // this closes the MaxSystem.deferLow (I know it looks like a mistake.)

You can place in "(outlet(0, EXAMPLEDATA); " where-ever it is relevant/will work and this will get data out.

Overall this side of the mxj external coding is fairly lacking in documentation to aid the creation of objects. I hope that this helps other people who are attempting to do similar tasks as I have and won't spend a week failing to do anything.

Look at the documentation in Java-doc to help the java coding.

Apologies, I realised that I have to be careful when publicly posting any of my work as they can be picked up by our university plagiarism checks. 

The problem:
I was attempting to access the buffer via mxj to then create functions which could perform certain types of non-real-time analysis of stored audio. The issue was that I couldn't work out how to actually use the method and was returning all types of errors...

The fix:
So the fix was to look at the buf.op help file - which is located in /Cycling74/Max 6.1/Cycling74/java/help .
This file shows how the buf.op file and any buffer access mxj's should be used in max. 

In the Java the methods should be executable to allow them to be run inside max. Therefore should be structured like this: 
 
 
 

import com.cycling74.max.*;
import com.cycling74.msp.*;

public class ClassNameHere extends MaxObject{
	String bufname = null;

	bufZCR3(Atom[] a){
		declareInlets(new int[]{DataTypes.ALL});
		declareOutlets(new int[]{DataTypes.ALL});
		createInfoOutlet(false);
                declareIO(1, 2); // this will declare how many inputs and outputs respectively
		if(a.length>0)
			set(a[0].toString());
		}

	public void set(String s){
		bufname = s;
	}
public void NameOfMethodHere(final Atom[] a){
		MaxSystem.deferLow(new Executable() {
			public void execute() {
				float[] Example = MaxBuffer(Bufname, 1); // you can specify it to look for other channels where 1 is placed

		}
		);  // this closes the MaxSystem.deferLow (I know it looks like a mistake.)
	}
 
 
 


You can place in "(outlet(0, EXAMPLEDATA); " where-ever it is relevant/will work and this will get data out. 

Overall this side of the mxj external coding is fairly lacking in documentation to aid the creation of objects. I hope that this helps other people who are attempting to do similar tasks as I have and won't spend a week failing to do anything. 

Look at the documentation in Java-doc to help the java coding.


Buffer Analysis through mxj