1 /*
2 * Copyright (c) 1999, 2018, 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 com.sun.media.sound;
27
28 import java.io.BufferedOutputStream;
29 import java.io.ByteArrayInputStream;
30 import java.io.ByteArrayOutputStream;
31 import java.io.DataOutputStream;
32 import java.io.File;
33 import java.io.FileOutputStream;
34 import java.io.IOException;
35 import java.io.InputStream;
36 import java.io.OutputStream;
37 import java.io.RandomAccessFile;
38 import java.io.SequenceInputStream;
39 import java.util.Objects;
40
41 import javax.sound.sampled.AudioFileFormat;
42 import javax.sound.sampled.AudioFileFormat.Type;
43 import javax.sound.sampled.AudioFormat;
44 import javax.sound.sampled.AudioInputStream;
45 import javax.sound.sampled.AudioSystem;
46
47 /**
48 * AU file writer.
49 *
50 * @author Jan Borgersen
51 */
52 public final class AuFileWriter extends SunFileWriter {
53
54 /**
55 * Value for length field if length is not known.
56 */
57 private static final int UNKNOWN_SIZE = -1;
58
59 /**
60 * Constructs a new AuFileWriter object.
61 */
62 public AuFileWriter() {
63 super(new Type[]{Type.AU});
64 }
65
66 @Override
67 public Type[] getAudioFileTypes(AudioInputStream stream) {
68
69 Type[] filetypes = new Type[types.length];
70 System.arraycopy(types, 0, filetypes, 0, types.length);
71
72 // make sure we can write this stream
73 AudioFormat format = stream.getFormat();
74 AudioFormat.Encoding encoding = format.getEncoding();
75
76 if (AudioFormat.Encoding.ALAW.equals(encoding)
77 || AudioFormat.Encoding.ULAW.equals(encoding)
78 || AudioFormat.Encoding.PCM_SIGNED.equals(encoding)
79 || AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)
80 || AudioFormat.Encoding.PCM_FLOAT.equals(encoding)) {
81 return filetypes;
82 }
83
84 return new Type[0];
85 }
86
87 @Override
88 public int write(AudioInputStream stream, Type fileType, OutputStream out) throws IOException {
89 Objects.requireNonNull(stream);
90 Objects.requireNonNull(fileType);
91 Objects.requireNonNull(out);
92
93 // we must know the total data length to calculate the file length
94 //$$fb 2001-07-13: fix for bug 4351296: do not throw an exception
95 //if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
96 // throw new IOException("stream length not specified");
97 //}
98
99 // throws IllegalArgumentException if not supported
100 AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
101 return writeAuFile(stream, auFileFormat, out);
102 }
103
104 @Override
105 public int write(AudioInputStream stream, Type fileType, File out) throws IOException {
106 Objects.requireNonNull(stream);
107 Objects.requireNonNull(fileType);
108 Objects.requireNonNull(out);
109
110 // throws IllegalArgumentException if not supported
111 AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
112
113 // first write the file without worrying about length fields
114 final int bytesWritten;
115 try (final FileOutputStream fos = new FileOutputStream(out);
116 final BufferedOutputStream bos = new BufferedOutputStream(fos)) {
117 bytesWritten = writeAuFile(stream, auFileFormat, bos);
118 }
119
120 // now, if length fields were not specified, calculate them,
121 // open as a random access file, write the appropriate fields,
122 // close again....
123 if( auFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
124
125 // $$kk: 10.22.99: jan: please either implement this or throw an exception!
126 // $$fb: 2001-07-13: done. Fixes Bug 4479981
127 try (final RandomAccessFile raf = new RandomAccessFile(out, "rw")) {
128 if (raf.length() <= 0x7FFFFFFFl) {
129 // skip AU magic and data offset field
130 raf.skipBytes(8);
131 raf.writeInt(bytesWritten - AuFileFormat.AU_HEADERSIZE);
132 // that's all
133 }
134 }
135 }
136
137 return bytesWritten;
138 }
139
140 // -------------------------------------------------------------
141
142 /**
143 * Returns the AudioFileFormat describing the file that will be written from this AudioInputStream.
144 * Throws IllegalArgumentException if not supported.
145 */
146 private AudioFileFormat getAudioFileFormat(Type type, AudioInputStream stream) {
147 if (!isFileTypeSupported(type, stream)) {
148 throw new IllegalArgumentException("File type " + type + " not supported.");
149 }
150
151 AudioFormat streamFormat = stream.getFormat();
152 AudioFormat.Encoding encoding = streamFormat.getEncoding();
153
154 if (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) {
155 encoding = AudioFormat.Encoding.PCM_SIGNED;
156 }
157
158 // We always write big endian au files, this is by far the standard
159 AudioFormat format = new AudioFormat(encoding,
160 streamFormat.getSampleRate(),
161 streamFormat.getSampleSizeInBits(),
162 streamFormat.getChannels(),
163 streamFormat.getFrameSize(),
164 streamFormat.getFrameRate(), true);
165
166 int fileSize;
167 if (stream.getFrameLength() != AudioSystem.NOT_SPECIFIED) {
168 fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AuFileFormat.AU_HEADERSIZE;
169 } else {
170 fileSize = AudioSystem.NOT_SPECIFIED;
171 }
172
173 return new AuFileFormat(Type.AU, fileSize, format,
174 (int) stream.getFrameLength());
175 }
176
177 private InputStream getFileStream(AuFileFormat auFileFormat, AudioInputStream audioStream) throws IOException {
178
179 // private method ... assumes auFileFormat is a supported file type
180
181 AudioFormat format = auFileFormat.getFormat();
182
183 int headerSize = AuFileFormat.AU_HEADERSIZE;
184 long dataSize = auFileFormat.getFrameLength();
185 //$$fb fix for Bug 4351296
186 //int dataSizeInBytes = dataSize * format.getFrameSize();
187 long dataSizeInBytes = (dataSize==AudioSystem.NOT_SPECIFIED)?UNKNOWN_SIZE:dataSize * format.getFrameSize();
188 if (dataSizeInBytes>0x7FFFFFFFl) {
189 dataSizeInBytes=UNKNOWN_SIZE;
190 }
191 int auType = auFileFormat.getAuType();
192 int sampleRate = (int)format.getSampleRate();
193 int channels = format.getChannels();
194
195 // if we need to do any format conversion, we do it here.
196 //$$ fb 2001-07-13: Bug 4391108
197 audioStream = AudioSystem.getAudioInputStream(format, audioStream);
198
199 final byte[] header;
200 try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
201 DataOutputStream dos = new DataOutputStream(baos)) {
202 dos.writeInt(AuFileFormat.AU_SUN_MAGIC);
203 dos.writeInt(headerSize);
204 dos.writeInt((int) dataSizeInBytes);
205 dos.writeInt(auType);
206 dos.writeInt(sampleRate);
207 dos.writeInt(channels);
208 header = baos.toByteArray();
209 }
210 // Now create a new InputStream from headerStream and the InputStream
211 // in audioStream
212 return new SequenceInputStream(new ByteArrayInputStream(header),
213 new NoCloseInputStream(audioStream));
214 }
215
216 private int writeAuFile(AudioInputStream in, AuFileFormat auFileFormat,
217 OutputStream out) throws IOException {
218
219 int bytesRead = 0;
220 int bytesWritten = 0;
221 InputStream fileStream = getFileStream(auFileFormat, in);
222 byte[] buffer = new byte[bisBufferSize];
223 int maxLength = auFileFormat.getByteLength();
224
225 while( (bytesRead = fileStream.read( buffer )) >= 0 ) {
226 if (maxLength>0) {
227 if( bytesRead < maxLength ) {
228 out.write( buffer, 0, bytesRead );
229 bytesWritten += bytesRead;
230 maxLength -= bytesRead;
231 } else {
232 out.write( buffer, 0, maxLength );
233 bytesWritten += maxLength;
234 maxLength = 0;
235 break;
236 }
237 } else {
238 out.write( buffer, 0, bytesRead );
239 bytesWritten += bytesRead;
240 }
241 }
242
243 return bytesWritten;
244 }
245 }