/*

 * Copyright (c) 2007, 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.io.IOException;

import javax.sound.midi.*;

import javax.sound.sampled.*;

import com.sun.media.sound.*;

public class SoftTestUtils {

    public AudioSynthesizer synth = new SoftSynthesizer();

    public AudioInputStream stream;

    public byte[] tmpbuffer = new byte[1024];

    public static SF2Soundbank createTestSoundBank()

    {

        SF2Soundbank sf2 = new SF2Soundbank();

        AudioFormat format = new AudioFormat(44100, 16, 1, true, false);

        float[] data = new float[44100+1000];

        float fr = 440/format.getSampleRate();

        for (int i = 0; i < data.length; i++)

            data[i] = (float)Math.sin(i*fr*2*Math.PI);

        byte[] bdata = new byte[data.length*format.getFrameSize()];

        AudioFloatConverter.getConverter(format).toByteArray(data, bdata);

        SF2Sample sample = new SF2Sample(sf2);

        sample.setName("Test Sample");

        sample.setData(bdata);

        sample.setStartLoop(500);

        sample.setEndLoop(data.length - 500);

        sample.setSampleRate((long) format.getSampleRate());

        sample.setOriginalPitch(69);

        sf2.addResource(sample);

        SF2Layer layer = new SF2Layer(sf2);

        layer.setName("Test Layer");

        sf2.addResource(layer);

        SF2LayerRegion region = new SF2LayerRegion();

        region.putInteger(SF2Region.GENERATOR_SAMPLEMODES, 1);

        region.setSample(sample);

        layer.getRegions().add(region);

        SF2Instrument ins = new SF2Instrument(sf2);

        ins.setName("Test Instrument");

        sf2.addInstrument(ins);

        SF2InstrumentRegion insregion = new SF2InstrumentRegion();

        insregion.setLayer(layer);

        ins.getRegions().add(insregion);

        return sf2;

    }

    public SoftTestUtils() throws Exception {

        stream = synth.openStream(null, null);

        synth.unloadAllInstruments(synth.getDefaultSoundbank());

        synth.loadAllInstruments(createTestSoundBank());

    }

    public void close() throws Exception {

        stream.close();

        stream = null;

        synth.close();

        synth = null;

    }

    public void read(double seconds) throws IOException

    {

        int bufflen =

           stream.getFormat().getFrameSize() *

           (int)(stream.getFormat().getFrameRate() * seconds);

        while(bufflen != 0)

        {

            if(bufflen > 1024)

                bufflen -= stream.read(tmpbuffer,0,1024);

            else

                bufflen -= stream.read(tmpbuffer,0, bufflen);

        }

    }

    public VoiceStatus findVoice(int channel, int note) {

        VoiceStatus[] v = synth.getVoiceStatus();

        for (int k = 0; k < v.length; k++)

            if(v[k].active)

                if(v[k].channel == channel)

                    if(v[k].note == note)

                        return v[k];

        return null;

    }

}