get sound Volume Controls - Java javax.sound.sampled

Java examples for javax.sound.sampled:Control

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Description

get sound Volume Controls

Demo Code

/*//  w w w  . j av a 2s  .co  m
 * Copyright 2013 Daniel Baumann
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
//package com.java2s;
import java.util.ArrayList;
import java.util.List;

import javax.sound.sampled.CompoundControl;
import javax.sound.sampled.Control;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.Line;

public class Main {
    public static List<FloatControl> getVolumeControls(Line line) {
        List<FloatControl> result = new ArrayList<FloatControl>();
        for (Control c : line.getControls()) {
            result.addAll(getVolumeControls(c));
        }
        return result;
    }

    private static List<FloatControl> getVolumeControls(Control control) {
        List<FloatControl> result = new ArrayList<FloatControl>();
        if (control instanceof CompoundControl) {
            Control[] controls = ((CompoundControl) control)
                    .getMemberControls();
            for (Control c : controls) {
                result.addAll(getVolumeControls(c));
            }
        } else if (control instanceof FloatControl) {
            FloatControl fc = (FloatControl) control;
            if (fc.getType() == FloatControl.Type.VOLUME) {
                result.add(fc);
            }
        }
        return result;
    }
}

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