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
24import java.io.ByteArrayInputStream;
25import java.io.FilterInputStream;
26import java.io.IOException;
27import java.io.InputStream;
28
29import javax.sound.midi.MidiSystem;
30import javax.sound.midi.Sequence;
31
32/**
33 * @test
34 * @bug 4910986
35 * @summary MIDI file parser breaks up on http connection
36 */
37public 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 */
72class 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}
110