1 /*
2 * Copyright (c) 2002-2021, City of 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 fr.paris.lutece.portal.service.util.AppLogService;
37
38 import java.io.ByteArrayOutputStream;
39 import java.io.File;
40 import java.io.IOException;
41
42 import java.util.ArrayList;
43 import java.util.List;
44
45 import javax.sound.sampled.AudioFileFormat;
46 import javax.sound.sampled.AudioFormat;
47 import javax.sound.sampled.AudioInputStream;
48 import javax.sound.sampled.AudioSystem;
49
50 /**
51 *
52 */
53 public final class AudioConcat
54 {
55 /**
56 *
57 *
58 */
59 private AudioConcat( )
60 {
61 }
62
63 /**
64 * Return byte array of concatened audio files
65 *
66 * @param files
67 * to cancatenate
68 * @return byte array of concatened audio files
69 */
70 public static ByteArrayOutputStream concat( File... files )
71 {
72 List<AudioInputStream> audioInputStreamList = new ArrayList<AudioInputStream>( );
73 AudioInputStream audioInputStream = null;
74 AudioFormat audioFormat = null;
75
76 for ( File soundFile : files )
77 {
78 try
79 {
80 audioInputStream = AudioSystem.getAudioInputStream( soundFile );
81 }
82 catch( Exception e )
83 {
84 AppLogService.error( e.getMessage( ), e );
85 }
86
87 audioInputStreamList.add( audioInputStream );
88
89 AudioFormat format = audioInputStream.getFormat( );
90
91 if ( audioFormat == null )
92 {
93 audioFormat = format;
94 }
95 }
96
97 return concat( audioInputStreamList, audioFormat );
98 }
99
100 /**
101 * Return byte array of concatened stream list.
102 *
103 * @param audioInputStreamList
104 * the list to contatenate
105 * @param audioFormat
106 * the result format
107 * @return byte array of concatened stream list.
108 */
109 public static ByteArrayOutputStream concat( List<AudioInputStream> audioInputStreamList, AudioFormat audioFormat )
110 {
111 AudioInputStream audioInputStream = new SequenceAudioInputStream( audioFormat, audioInputStreamList );
112 ByteArrayOutputStream outputStream = new ByteArrayOutputStream( );
113
114 try
115 {
116 AudioSystem.write( audioInputStream, AudioFileFormat.Type.WAVE, outputStream );
117 outputStream.flush( );
118 outputStream.close( );
119 }
120 catch( IOException e )
121 {
122 AppLogService.error( e.getMessage( ), e );
123 }
124
125 return outputStream;
126 }
127 }