get Audio Mixer Master Output Line - Java javax.sound.sampled

Java examples for javax.sound.sampled:Audio

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Description

get Audio Mixer Master Output Line

Demo Code


//package com.java2s;

import java.util.ArrayList;
import java.util.List;
import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.Line;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.Mixer.Info;

public class Main {
    public static void main(String[] argv) throws Exception {
        System.out.println(getMasterOutputLine());
    }//from   ww  w  .  java  2  s  . c o  m

    public static Line getMasterOutputLine() {
        for (Mixer mixer : getMixers()) {
            for (Line line : getAvailableOutputLines(mixer)) {
                if (line.getLineInfo().toString().contains("Master"))
                    return line;
            }
        }
        return null;
    }

    public static List<Mixer> getMixers() {
        Info[] infos = AudioSystem.getMixerInfo();
        List<Mixer> mixers = new ArrayList<Mixer>(infos.length);
        for (Info info : infos) {
            Mixer mixer = AudioSystem.getMixer(info);
            mixers.add(mixer);
        }
        return mixers;
    }

    public static List<Line> getAvailableOutputLines(Mixer mixer) {
        return getAvailableLines(mixer, mixer.getTargetLineInfo());
    }

    public static String toString(Line line) {
        if (line == null)
            return null;
        Line.Info info = line.getLineInfo();
        return info.toString();// + " (" + line.getClass().getSimpleName() + ")";
    }

    private static List<Line> getAvailableLines(Mixer mixer,
            Line.Info[] lineInfos) {
        List<Line> lines = new ArrayList<Line>(lineInfos.length);
        for (Line.Info lineInfo : lineInfos) {
            Line line;
            line = getLineIfAvailable(mixer, lineInfo);
            if (line != null)
                lines.add(line);
        }
        return lines;
    }

    public static Line getLineIfAvailable(Mixer mixer, Line.Info lineInfo) {
        try {
            return mixer.getLine(lineInfo);
        } catch (LineUnavailableException ex) {
            return null;
        }
    }
}

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