JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2002, 2013, 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
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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.
 */

package com.sun.media.sound;

import javax.sound.midi.*;

/**
 * optimized FastSysexMessage that doesn't copy the array upon instantiation
 *
 * @author Florian Bomers
 */
final class FastSysexMessage extends SysexMessage {

    FastSysexMessage(byte[] data) throws InvalidMidiDataException {
        super(data);
        if (data.length==0 || (((data[0] & 0xFF) != 0xF0) && ((data[0] & 0xFF) != 0xF7))) {
            super.setMessage(data, data.length); // will throw Exception
        }
    }

    /**
     * The returned array may be larger than this message is.
     * Use getLength() to get the real length of the message.
     */
    byte[] getReadOnlyMessage() {
        return data;
    }

    // overwrite this method so that the original data array,
    // which is shared among all transmitters, cannot be modified
    public void setMessage(byte[] data, int length) throws InvalidMidiDataException {
        if ((data.length == 0) || (((data[0] & 0xFF) != 0xF0) && ((data[0] & 0xFF) != 0xF7))) {

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