1 /* |
|
2 * Copyright (c) 1999, 2013, 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 sun.audio; |
|
27 |
|
28 import java.io.*; |
|
29 import java.util.Arrays; |
|
30 |
|
31 import javax.sound.sampled.*; |
|
32 |
|
33 |
|
34 /** |
|
35 * A clip of audio data. This data can be used to construct an |
|
36 * AudioDataStream, which can be played. <p> |
|
37 * |
|
38 * @author Arthur van Hoff |
|
39 * @author Kara Kytle |
|
40 * @see AudioDataStream |
|
41 * @see AudioPlayer |
|
42 */ |
|
43 |
|
44 /* |
|
45 * the idea here is that the AudioData object encapsulates the |
|
46 * data you need to play an audio clip based on a defined set |
|
47 * of data. to do this, you require the audio data (a byte |
|
48 * array rather than an arbitrary input stream) and a format |
|
49 * object. |
|
50 */ |
|
51 |
|
52 |
|
53 public final class AudioData { |
|
54 |
|
55 private static final AudioFormat DEFAULT_FORMAT = |
|
56 new AudioFormat(AudioFormat.Encoding.ULAW, |
|
57 8000, // sample rate |
|
58 8, // sample size in bits |
|
59 1, // channels |
|
60 1, // frame size in bytes |
|
61 8000, // frame rate |
|
62 true ); // bigendian (irrelevant for 8-bit data) |
|
63 |
|
64 AudioFormat format; // carry forth the format array amusement |
|
65 byte buffer[]; |
|
66 |
|
67 /** |
|
68 * Constructor |
|
69 */ |
|
70 public AudioData(final byte[] buffer) { |
|
71 // if we cannot extract valid format information, we resort to assuming |
|
72 // the data will be 8k mono u-law in order to provide maximal backwards |
|
73 // compatibility.... |
|
74 this(DEFAULT_FORMAT, buffer); |
|
75 |
|
76 // okay, we need to extract the format and the byte buffer of data |
|
77 try { |
|
78 AudioInputStream ais = AudioSystem.getAudioInputStream(new ByteArrayInputStream(buffer)); |
|
79 this.format = ais.getFormat(); |
|
80 ais.close(); |
|
81 // $$fb 2002-10-27: buffer contains the file header now! |
|
82 } catch (IOException e) { |
|
83 // use default format |
|
84 } catch (UnsupportedAudioFileException e1 ) { |
|
85 // use default format |
|
86 } |
|
87 } |
|
88 |
|
89 |
|
90 /** |
|
91 * Non-public constructor; this is the one we use in ADS and CADS |
|
92 * constructors. |
|
93 */ |
|
94 AudioData(final AudioFormat format, final byte[] buffer) { |
|
95 this.format = format; |
|
96 if (buffer != null) { |
|
97 this.buffer = Arrays.copyOf(buffer, buffer.length); |
|
98 } |
|
99 } |
|
100 } |
|