1 /*

     2  * Copyright (c) 2002, 2016, 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.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.io.ByteArrayInputStream;

    25 import java.io.FilterInputStream;

    26 import java.io.IOException;

    27 import java.io.InputStream;

    28 

    29 import javax.sound.midi.MidiSystem;

    30 import javax.sound.midi.Sequence;

    31 

    32 /**

    33  * @test

    34  * @bug 4910986

    35  * @summary MIDI file parser breaks up on http connection

    36  */

    37 public class SMFParserBreak {

    38 

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

    40 

    41         InputStream is = new ByteArrayInputStream(midifile);

    42         // create a buffered input stream that seems

    43         // to be on an unfortunate boundary for the

    44         // 1.4.2 SMF parser implementation

    45         is = new ChunkInputStream(is, 32);

    46         Sequence sequence = MidiSystem.getSequence(is);

    47 

    48         long duration = sequence.getMicrosecondLength() / 10000;

    49         System.out.println("Duration: "+duration+" deciseconds ");

    50 

    51         // the test is passed if no exception thrown

    52         System.out.println("Test passed");

    53     }

    54 

    55     // A MIDI file

    56     static byte[] midifile = {

    57         77, 84, 104, 100, 0, 0, 0, 6, 0, 1, 0, 3, -30, 120, 77, 84, 114, 107, 0,

    58         0, 0, 123, 0, -112, 30, 100, -113, 49, -128, 50, 100, -114, 69, -112, 31,

    59         100, -114, 33, -128, 51, 100, -114, 55, -112, 32, 100, -114, 120, -128, 52,

    60         100, -114, 40, -112, 33, 100, -114, 26, -128, 53, 100, -114, 26, -112, 34,

    61         100, -114, 76, -128, 54, 100, -114, 12, -112, 35, 100, -114, 91, -128, 55,

    62         100, -114, 69, -112, 36, 100, -114, 33, -128, 56, 100, -114, 55, -112, 37,

    63         100, -114, 84, -128, 57, 100, -114, 40, -112, 38, 100, -114, 26, -128, 58,

    64         100, -114, 26, -112, 39, 100, -113, 24, -128, 59, 100, -113, 60, -112, 40,

    65         100, -113, 110, -128, 60, 100, -113, 96, -112, 41, 100, -113, 39, -128, 61,

    66         100, 0, -1, 47, 0, 77, 84, 114, 107, 0, 0, 0, 4, 0, -1, 47, 0, 77, 84, 114,

    67         107, 0, 0, 0, 4, 0, -1, 47, 0

    68     };

    69 }

    70 

    71 /* an input stream that always returns data in chunks */

    72 class ChunkInputStream extends FilterInputStream {

    73     int chunkSize;

    74     int p = 0; // position

    75 

    76     public ChunkInputStream(InputStream is, int chunkSize) {

    77         super(is);

    78         this.chunkSize = chunkSize;

    79     }

    80 

    81     // override to increase counter

    82     public int read() throws IOException {

    83         int ret = super.read();

    84         if (ret >= 0) {

    85             p++;

    86         }

    87         return ret;

    88     }

    89 

    90     // override to make sure that read(byte[], int, int) is used

    91     public int read(byte[] b) throws IOException {

    92         return read(b, 0, b.length);

    93     }

    94 

    95     // override to split the data in chunks

    96     public int read(byte[] b, int off, int len) throws IOException {

    97         // if we would pass a chunk boundary,

    98         // only return up to the chunk boundary

    99         if ( (p / chunkSize) < ( (p+len) / chunkSize)) {

   100             // p+len is in the next chunk

   101             len -= ((p+len) % chunkSize);

   102         }

   103         int ret = super.read(b, off, len);

   104         if (ret >= 0) {

   105             p += ret;

   106         }

   107         return ret;

   108     }

   109 }