Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
SequenceAudioInputStream |
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| 2.5714285714285716;2,571 |
1 | /* | |
2 | * Copyright (c) 2002-2014, Mairie de Paris | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright notice | |
10 | * and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright notice | |
13 | * and the following disclaimer in the documentation and/or other materials | |
14 | * provided with the distribution. | |
15 | * | |
16 | * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE | |
24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
30 | * POSSIBILITY OF SUCH DAMAGE. | |
31 | * | |
32 | * License 1.0 | |
33 | */ | |
34 | package fr.paris.lutece.plugins.captcha.modules.jcaptcha.service.sound; | |
35 | ||
36 | import java.io.ByteArrayInputStream; | |
37 | import java.io.IOException; | |
38 | import java.util.ArrayList; | |
39 | import java.util.Collection; | |
40 | import java.util.Iterator; | |
41 | import java.util.List; | |
42 | ||
43 | import javax.sound.sampled.AudioFormat; | |
44 | import javax.sound.sampled.AudioInputStream; | |
45 | import javax.sound.sampled.AudioSystem; | |
46 | ||
47 | ||
48 | /** | |
49 | * | |
50 | * @author lutecer | |
51 | * | |
52 | */ | |
53 | public class SequenceAudioInputStream extends AudioInputStream | |
54 | { | |
55 | private List<AudioInputStream> _audioInputStreamList; | |
56 | private int _nCurrentStream; | |
57 | ||
58 | /** | |
59 | * | |
60 | * @param audioFormat the audio Format | |
61 | * @param audioInputStreams the audio InputStreams | |
62 | */ | |
63 | public SequenceAudioInputStream( AudioFormat audioFormat, Collection<AudioInputStream> audioInputStreams ) | |
64 | { | |
65 | 0 | super( new ByteArrayInputStream( new byte[0] ), audioFormat, AudioSystem.NOT_SPECIFIED ); |
66 | 0 | _audioInputStreamList = new ArrayList<AudioInputStream>( audioInputStreams ); |
67 | 0 | _nCurrentStream = 0; |
68 | 0 | } |
69 | ||
70 | /** | |
71 | * | |
72 | * @return the audio inputStream | |
73 | */ | |
74 | private AudioInputStream getCurrentStream( ) | |
75 | { | |
76 | 0 | return _audioInputStreamList.get( _nCurrentStream ); |
77 | } | |
78 | ||
79 | /** | |
80 | * | |
81 | * @return true if mcurrent stream < audioInputStreamList size | |
82 | */ | |
83 | private boolean advanceStream( ) | |
84 | { | |
85 | 0 | _nCurrentStream++; |
86 | ||
87 | 0 | boolean bAnotherStreamAvailable = ( _nCurrentStream < _audioInputStreamList.size( ) ); |
88 | ||
89 | 0 | return bAnotherStreamAvailable; |
90 | } | |
91 | ||
92 | /** | |
93 | * @return frame length | |
94 | */ | |
95 | public long getFrameLength( ) | |
96 | { | |
97 | 0 | long lLengthInFrames = 0; |
98 | 0 | Iterator<AudioInputStream> streamIterator = _audioInputStreamList.iterator( ); |
99 | ||
100 | 0 | while ( streamIterator.hasNext( ) ) |
101 | { | |
102 | 0 | AudioInputStream stream = streamIterator.next( ); |
103 | 0 | long lLength = stream.getFrameLength( ); |
104 | ||
105 | 0 | if ( lLength == AudioSystem.NOT_SPECIFIED ) |
106 | { | |
107 | 0 | return AudioSystem.NOT_SPECIFIED; |
108 | } | |
109 | else | |
110 | { | |
111 | 0 | lLengthInFrames += lLength; |
112 | } | |
113 | 0 | } |
114 | ||
115 | 0 | return lLengthInFrames; |
116 | } | |
117 | ||
118 | /** | |
119 | * @return the byte read | |
120 | * @throws IOException the IOException | |
121 | */ | |
122 | public int read( ) throws IOException | |
123 | { | |
124 | 0 | AudioInputStream stream = getCurrentStream( ); |
125 | 0 | int nByte = stream.read( ); |
126 | ||
127 | 0 | if ( nByte == -1 ) |
128 | { | |
129 | /* | |
130 | * The end of the current stream has been signaled. We try to | |
131 | * advance to the next stream. | |
132 | */ | |
133 | 0 | boolean bAnotherStreamAvailable = advanceStream( ); |
134 | ||
135 | 0 | if ( bAnotherStreamAvailable ) |
136 | { | |
137 | /* | |
138 | * There is another stream. We recurse into this method to read | |
139 | * from it. | |
140 | */ | |
141 | 0 | return read( ); |
142 | } | |
143 | else | |
144 | { | |
145 | /* | |
146 | * No more data. We signal EOF. | |
147 | */ | |
148 | 0 | return -1; |
149 | } | |
150 | } | |
151 | else | |
152 | { | |
153 | /* | |
154 | * The most common case: We return the byte. | |
155 | */ | |
156 | 0 | return nByte; |
157 | } | |
158 | } | |
159 | ||
160 | /** | |
161 | * @param abData the data | |
162 | * @param nOffset the offset | |
163 | * @param nLength the length | |
164 | * @return the bytes read | |
165 | * @throws IOException the IOException | |
166 | */ | |
167 | public int read( byte[] abData, int nOffset, int nLength ) | |
168 | throws IOException | |
169 | { | |
170 | 0 | AudioInputStream stream = getCurrentStream( ); |
171 | 0 | int nBytesRead = stream.read( abData, nOffset, nLength ); |
172 | ||
173 | 0 | if ( nBytesRead == -1 ) |
174 | { | |
175 | /* | |
176 | * The end of the current stream has been signaled. We try to | |
177 | * advance to the next stream. | |
178 | */ | |
179 | 0 | boolean bAnotherStreamAvailable = advanceStream( ); |
180 | ||
181 | 0 | if ( bAnotherStreamAvailable ) |
182 | { | |
183 | /* | |
184 | * There is another stream. We recurse into this method to read | |
185 | * from it. | |
186 | */ | |
187 | 0 | return read( abData, nOffset, nLength ); |
188 | } | |
189 | else | |
190 | { | |
191 | /* | |
192 | * No more data. We signal EOF. | |
193 | */ | |
194 | 0 | return -1; |
195 | } | |
196 | } | |
197 | else | |
198 | { | |
199 | /* | |
200 | * The most common case: We return the length. | |
201 | */ | |
202 | 0 | return nBytesRead; |
203 | } | |
204 | } | |
205 | ||
206 | /** | |
207 | * @return the current stream available | |
208 | * @throws IOException the IOException | |
209 | */ | |
210 | public int available( ) throws IOException | |
211 | { | |
212 | 0 | return getCurrentStream( ).available( ); |
213 | } | |
214 | } | |
215 | /** * SequenceAudioInputStream.java ** */ |