Android Open Source - Musicdroid Note Name

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Musicdroid: An on-device music generator for Android
 * Copyright (C) 2010-2014 The Catrobat Team
 * (<http://developer.catrobat.org/credits>)
 */*from   w  w w .j  a v a 2  s.c o m*/
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * An additional term exception under section 7 of the GNU Affero
 * General Public License, version 3, is available at
 * http://developer.catrobat.org/license_additional_term
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.catrobat.musicdroid.pocketmusic.note;
public enum NoteName {
    A0(21, false), A0S(22, true), B0(23, false), C1(24, false), C1S(25, true), D1(26, false), D1S(27, true), E1(28,
            false), F1(29, false), F1S(30, true), G1(31, false), G1S(32, true), A1(33, false), A1S(34, true), B1(35,
            false), C2(36, false), C2S(37, true), D2(38, false), D2S(39, true), E2(40, false), F2(41, false), F2S(42,
            true), G2(43, false), G2S(44, true), A2(45, false), A2S(46, true), B2(47, false), C3(48, false), C3S(49,
            true), D3(50, false), D3S(51, true), E3(52, false), F3(53, false), F3S(54, true), G3(55, false), G3S(56,
            true), A3(57, false), A3S(58, true), B3(59, false), C4(60, false), C4S(61, true), D4(62, false), D4S(63,
            true), E4(64, false), F4(65, false), F4S(66, true), G4(67, false), G4S(68, true), A4(69, false), A4S(70,
            true), B4(71, false), C5(72, false), C5S(73, true), D5(74, false), D5S(75, true), E5(76, false), F5(77,
            false), F5S(78, true), G5(79, false), G5S(80, true), A5(81, false), A5S(82, true), B5(83, false), C6(84,
            false), C6S(85, true), D6(86, false), D6S(87, true), E6(88, false), F6(89, false), F6S(90, true), G6(91,
            false), G6S(92, true), A6(93, false), A6S(94, true), B6(95, false), C7(96, false), C7S(97, true), D7(98,
            false), D7S(99, true), E7(100, false), F7(101, false), F7S(102, true), G7(103, false), G7S(104, true), A7(
            105, false), A7S(106, true), B7(107, false), C8(108, false);

    private static final NoteName DEFAULT_NOTE_NAME = NoteName.C4;

    private int midi;
    private boolean signed;

    private NoteName(int midi, boolean signed) {
        this.midi = midi;
        this.signed = signed;
    }

    public static NoteName getNoteNameFromMidiValue(int midiValue) {
        NoteName[] noteNames = NoteName.values();

        for (int i = 0; i < noteNames.length; i++) {
            if (noteNames[i].getMidi() == midiValue) {
                return noteNames[i];
            }
        }

        return DEFAULT_NOTE_NAME;
    }

    public static int calculateDistanceCountingNoneSignedNotesOnly(NoteName referenceNoteName, NoteName noteName) {
        int distance = 0;
        boolean isDownGoing = (noteName.midi - referenceNoteName.midi) > 0;

        NoteName smallNoteName = isDownGoing ? referenceNoteName : noteName;
        NoteName largeNoteName = isDownGoing ? noteName : referenceNoteName;

        if (smallNoteName.isSigned()) {
            distance = 1;
        } else if (largeNoteName.isSigned()) {
            distance = -1;
        }

        while (smallNoteName.getMidi() != largeNoteName.getMidi()) {
            if (!smallNoteName.isSigned()) {
                distance++;
            }

            smallNoteName = smallNoteName.next();
        }

        return (isDownGoing ? distance * (-1) : distance);
    }

    public static int calculateDistanceToMiddleLineCountingSignedNotesOnly(MusicalKey key, NoteName noteName) {
        return calculateDistanceCountingNoneSignedNotesOnly(key.getNoteNameOnMiddleLine(), noteName);
    }

    public int getMidi() {
        return midi;
    }

    public NoteName next() {
        int index = this.ordinal() + 1;

        if (index >= values().length) {
            index--;
        }

        return values()[index];
    }

    public NoteName previous() {
        int index = this.ordinal() - 1;

        if (index < 0) {
            index++;
        }

        return values()[index];
    }

    public boolean isSigned() {
        return signed;
    }
}

Java Source Code List

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