/*

 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.util.ArrayList;

import javax.sound.sampled.AudioFormat;

import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.Control;

import javax.sound.sampled.DataLine;

import javax.sound.sampled.LineListener;

import javax.sound.sampled.LineUnavailableException;

import javax.sound.sampled.SourceDataLine;

import javax.sound.sampled.AudioFormat.Encoding;

import javax.sound.sampled.Control.Type;

import com.sun.media.sound.AudioFloatConverter;

/**

 * This is a SourceDataLine simulator used for testing SoftSynthesizer

 * without using real SourceDataLine / Audio Device.

 *

 * @author Karl Helgason

 */

public class DummySourceDataLine implements SourceDataLine {

    private int bufferSize = -1;

    private AudioFormat format = new AudioFormat(44100.0f, 16, 2, true, false);

    private DataLine.Info sourceLineInfo;

    private boolean active = false;

    private long framepos = 0;

    private boolean opened = false;

    private int framesize = 0;

    public DummySourceDataLine()

    {

        ArrayList<AudioFormat> formats = new ArrayList<AudioFormat>();

        for (int channels = 1; channels <= 2; channels++) {

            formats.add(new AudioFormat(Encoding.PCM_SIGNED,

                    AudioSystem.NOT_SPECIFIED, 8, channels, channels,

                    AudioSystem.NOT_SPECIFIED, false));

            formats.add(new AudioFormat(Encoding.PCM_UNSIGNED,

                    AudioSystem.NOT_SPECIFIED, 8, channels, channels,

                    AudioSystem.NOT_SPECIFIED, false));

            for (int bits = 16; bits < 32; bits += 8) {

                formats.add(new AudioFormat(Encoding.PCM_SIGNED,

                        AudioSystem.NOT_SPECIFIED, bits, channels, channels

                                * bits / 8, AudioSystem.NOT_SPECIFIED, false));

                formats.add(new AudioFormat(Encoding.PCM_UNSIGNED,

                        AudioSystem.NOT_SPECIFIED, bits, channels, channels

                                * bits / 8, AudioSystem.NOT_SPECIFIED, false));

                formats.add(new AudioFormat(Encoding.PCM_SIGNED,

                        AudioSystem.NOT_SPECIFIED, bits, channels, channels

                                * bits / 8, AudioSystem.NOT_SPECIFIED, true));

                formats.add(new AudioFormat(Encoding.PCM_UNSIGNED,

                        AudioSystem.NOT_SPECIFIED, bits, channels, channels

                                * bits / 8, AudioSystem.NOT_SPECIFIED, true));

            }

            formats.add(new AudioFormat(Encoding.PCM_FLOAT,

                    AudioSystem.NOT_SPECIFIED, 32, channels, channels * 4,

                    AudioSystem.NOT_SPECIFIED, false));

            formats.add(new AudioFormat(Encoding.PCM_FLOAT,

                    AudioSystem.NOT_SPECIFIED, 32, channels, channels * 4,

                    AudioSystem.NOT_SPECIFIED, true));

            formats.add(new AudioFormat(Encoding.PCM_FLOAT,

                    AudioSystem.NOT_SPECIFIED, 64, channels, channels * 8,

                    AudioSystem.NOT_SPECIFIED, false));

            formats.add(new AudioFormat(Encoding.PCM_FLOAT,

                    AudioSystem.NOT_SPECIFIED, 64, channels, channels * 8,

                    AudioSystem.NOT_SPECIFIED, true));

        }

        AudioFormat[] formats_array = formats.toArray(new AudioFormat[formats

                .size()]);

        sourceLineInfo = new DataLine.Info(SourceDataLine.class,

                formats_array, AudioSystem.NOT_SPECIFIED,

                AudioSystem.NOT_SPECIFIED);

    }

    public void open() throws LineUnavailableException {

        open(format);

    }

    public void open(AudioFormat format) throws LineUnavailableException {

        if (bufferSize == -1)

            bufferSize = ((int) (format.getFrameRate() / 2))

                    * format.getFrameSize();

        open(format, bufferSize);

    }

    public void open(AudioFormat format, int bufferSize)

            throws LineUnavailableException {

        this.format = format;

        this.bufferSize = bufferSize;

        this.framesize = format.getFrameSize();

        opened = true;

    }

    public boolean isOpen() {

        return opened;

    }

    public int write(byte[] b, int off, int len) {

        if (!isOpen())

            return 0;

        if (len % framesize != 0)

            throw new IllegalArgumentException(

                    "Number of bytes does not represent an integral number of sample frames.");

        int flen = len / framesize;

        framepos += flen;

        long time =  (long) (flen * (1000.0 / (double) getFormat()

                .getSampleRate()));

        try {

            Thread.sleep(time);

        } catch (InterruptedException e) {

            e.printStackTrace();

            return 0;

        }

        return len;

    }

    public int available() {

        return 0;

    }

    public void drain() {

    }

    public void flush() {

    }

    public int getBufferSize() {

        return bufferSize;

    }

    public AudioFormat getFormat() {

        return format;

    }

    public int getFramePosition() {

        return (int) getLongFramePosition();

    }

    public float getLevel() {

        return AudioSystem.NOT_SPECIFIED;

    }

    public long getLongFramePosition() {

        return framepos;

    }

    public long getMicrosecondPosition() {

        return (long) (getLongFramePosition() * (1000000.0 / (double) getFormat()

                .getSampleRate()));

    }

    public boolean isActive() {

        return active;

    }

    public boolean isRunning() {

        return active;

    }

    public void start() {

        active = true;

    }

    public void stop() {

        active = false;

    }

    public void close() {

        stop();

    }

    public Control getControl(Type control) {

        throw new IllegalArgumentException("Unsupported control type : "

                + control);

    }

    public Control[] getControls() {

        return new Control[0];

    }

    public javax.sound.sampled.Line.Info getLineInfo() {

        return sourceLineInfo;

    }

    public boolean isControlSupported(Type control) {

        return false;

    }

    public void addLineListener(LineListener listener) {

    }

    public void removeLineListener(LineListener listener) {

    }

}