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    1   /*
    2    * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package com.sun.media.sound;
   27   
   28   import javax.sound.midi;
   29   
   30   /**
   31    * optimized FastSysexMessage that doesn't copy the array upon instantiation
   32    *
   33    * @author Florian Bomers
   34    */
   35   class FastSysexMessage extends SysexMessage {
   36   
   37       FastSysexMessage(byte[] data) throws InvalidMidiDataException {
   38           super(data);
   39           if (data.length==0 || (((data[0] & 0xFF) != 0xF0) && ((data[0] & 0xFF) != 0xF7))) {
   40               super.setMessage(data, data.length); // will throw Exception
   41           }
   42       }
   43   
   44       /**
   45        * The returned array may be larger than this message is.
   46        * Use getLength() to get the real length of the message.
   47        */
   48       byte[] getReadOnlyMessage() {
   49           return data;
   50       }
   51   
   52       // overwrite this method so that the original data array,
   53       // which is shared among all transmitters, cannot be modified
   54       public void setMessage(byte[] data, int length) throws InvalidMidiDataException {
   55           if ((data.length == 0) || (((data[0] & 0xFF) != 0xF0) && ((data[0] & 0xFF) != 0xF7))) {
   56               super.setMessage(data, data.length); // will throw Exception
   57           }
   58           this.length = length;
   59           this.data = new byte[this.length];
   60           System.arraycopy(data, 0, this.data, 0, length);
   61       }
   62   
   63   } // class FastSysexMessage

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