/*

 * Copyright (c) 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

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 * questions.

 */

/* @test

   @summary Test SoftChannel program and bank change */

import java.io.IOException;

import javax.sound.midi.*;

import javax.sound.sampled.*;

import com.sun.media.sound.*;

public class ProgramAndBankChange {

    private static SimpleInstrument generateTestInstrument(Patch patch) {

        ModelOscillator osc = new ModelOscillator() {

            public float getAttenuation() {

                return 0;

            }

            public int getChannels() {

                return 1;

            }

            public ModelOscillatorStream open(float samplerate) {

                return new ModelOscillatorStream() {

                    public void close() throws IOException {

                    }

                    public void noteOff(int velocity) {

                    }

                    public void noteOn(MidiChannel channel, VoiceStatus voice,

                            int noteNumber, int velocity) {

                    }

                    public int read(float[][] buffer, int offset, int len)

                            throws IOException {

                        return len;

                    }

                    public void setPitch(float ipitch) {

                    }

                };

            }

        };

        ModelPerformer performer = new ModelPerformer();

        performer.getOscillators().add(osc);

        SimpleInstrument testinstrument = new SimpleInstrument();

        testinstrument.setPatch(patch);

        testinstrument.add(performer);

        return testinstrument;

    }

    private static void assertTrue(boolean value) throws Exception {

        if (!value)

            throw new RuntimeException("assertTrue fails!");

    }

    private static void testProgramAndBank(SoftSynthesizer soft,

            AudioInputStream stream, Patch patch) throws Exception {

        int program = patch.getProgram();

        int bank = patch.getBank();

        MidiChannel channel = soft.getChannels()[0];

        byte[] buff = new byte[2048];

        channel.programChange(bank, program);

        channel.noteOn(64, 64);

        stream.read(buff, 0, buff.length);

        int foundprogram = -1;

        int foundbank = -1;

        VoiceStatus[] vstatus = soft.getVoiceStatus();

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

            if (vstatus[i].active) {

                foundprogram = vstatus[i].program;

                foundbank = vstatus[i].bank;

                break;

            }

        }

        assertTrue(foundprogram == program);

        assertTrue(foundbank == bank);

        channel.noteOn(64, 0);

        stream.read(buff, 0, buff.length);

        channel = soft.getChannels()[1];

        // Send MSB Bank

        channel.controlChange(0x00, bank / 128);

        // Send LSB Bank

        channel.controlChange(0x20, bank % 128);

        // Send Program Change

        channel.programChange(program);

        channel.noteOn(64, 64);

        stream.read(buff, 0, buff.length);

        foundprogram = -1;

        foundbank = -1;

        vstatus = soft.getVoiceStatus();

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

            if (vstatus[i].active) {

                foundprogram = vstatus[i].program;

                foundbank = vstatus[i].bank;

                break;

            }

        }

        assertTrue(foundprogram == program);

        assertTrue(foundbank == bank);

        channel.noteOn(64, 0);

        stream.read(buff, 0, buff.length);

    }

    public static void main(String[] args) throws Exception {

        SoftSynthesizer soft = new SoftSynthesizer();

        AudioInputStream stream = soft.openStream(null, null);

        soft.unloadAllInstruments(soft.getDefaultSoundbank());

        soft.loadInstrument(generateTestInstrument(new Patch(0, 0)));

        soft.loadInstrument(generateTestInstrument(new Patch(7, 0)));

        soft.loadInstrument(generateTestInstrument(new Patch(20, 10)));

        soft.loadInstrument(generateTestInstrument(new Patch(3678, 15)));

        soft.loadInstrument(generateTestInstrument(new Patch(4678, 15)));

        testProgramAndBank(soft, stream, new Patch(0, 0));

        testProgramAndBank(soft, stream, new Patch(7, 0));

        testProgramAndBank(soft, stream, new Patch(20, 10));

        testProgramAndBank(soft, stream, new Patch(3678, 15));

        testProgramAndBank(soft, stream, new Patch(4678, 15));

        soft.close();

    }

}