1 /*
2 * Copyright (c) 1999, 2015, 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.File;
29 import java.io.InputStream;
30 import java.io.OutputStream;
31 import java.io.IOException;
32
33 import java.io.BufferedOutputStream;
34 import java.io.DataOutputStream;
35 import java.io.FileOutputStream;
36 import java.io.ByteArrayInputStream;
37 import java.io.ByteArrayOutputStream;
38 import java.io.RandomAccessFile;
39 import java.io.SequenceInputStream;
40 import java.util.Objects;
41
42 import javax.sound.sampled.AudioFileFormat;
43 import javax.sound.sampled.AudioInputStream;
44 import javax.sound.sampled.AudioFormat;
45 import javax.sound.sampled.AudioSystem;
46
47
48 /**
49 * AU file writer.
50 *
51 * @author Jan Borgersen
52 */
53 public final class AuFileWriter extends SunFileWriter {
54
55 //$$fb value for length field if length is not known
56 public final static int UNKNOWN_SIZE=-1;
57
58 /**
59 * Constructs a new AuFileWriter object.
60 */
61 public AuFileWriter() {
62 super(new AudioFileFormat.Type[]{AudioFileFormat.Type.AU});
63 }
64
65 public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
66
67 AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
68 System.arraycopy(types, 0, filetypes, 0, types.length);
69
70 // make sure we can write this stream
71 AudioFormat format = stream.getFormat();
72 AudioFormat.Encoding encoding = format.getEncoding();
73
74 if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
75 (AudioFormat.Encoding.ULAW.equals(encoding)) ||
76 (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
77 (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {
78
79 return filetypes;
80 }
81
82 return new AudioFileFormat.Type[0];
83 }
84
85
86 public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
87 Objects.requireNonNull(stream);
88 Objects.requireNonNull(fileType);
89 Objects.requireNonNull(out);
90
91 // we must know the total data length to calculate the file length
92 //$$fb 2001-07-13: fix for bug 4351296: do not throw an exception
93 //if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
94 // throw new IOException("stream length not specified");
95 //}
96
97 // throws IllegalArgumentException if not supported
98 AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
99
100 int bytesWritten = writeAuFile(stream, auFileFormat, out);
101 return bytesWritten;
102 }
103
104
105
106 public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
107 Objects.requireNonNull(stream);
108 Objects.requireNonNull(fileType);
109 Objects.requireNonNull(out);
110
111 // throws IllegalArgumentException if not supported
112 AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
113
114 // first write the file without worrying about length fields
115 FileOutputStream fos = new FileOutputStream( out ); // throws IOException
116 BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
117 int bytesWritten = writeAuFile(stream, auFileFormat, bos );
118 bos.close();
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 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 raf.close();
135 }
136
137 return bytesWritten;
138 }
139
140
141 // -------------------------------------------------------------
142
143 /**
144 * Returns the AudioFileFormat describing the file that will be written from this AudioInputStream.
145 * Throws IllegalArgumentException if not supported.
146 */
147 private AudioFileFormat getAudioFileFormat(AudioFileFormat.Type type, AudioInputStream stream) {
148
149 AudioFormat format = null;
150 AuFileFormat fileFormat = null;
151 AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED;
152
153 AudioFormat streamFormat = stream.getFormat();
154 AudioFormat.Encoding streamEncoding = streamFormat.getEncoding();
155
156
157 float sampleRate;
158 int sampleSizeInBits;
159 int channels;
160 int frameSize;
161 float frameRate;
162 int fileSize;
163
164 if( !types[0].equals(type) ) {
165 throw new IllegalArgumentException("File type " + type + " not supported.");
166 }
167
168 if( (AudioFormat.Encoding.ALAW.equals(streamEncoding)) ||
169 (AudioFormat.Encoding.ULAW.equals(streamEncoding)) ) {
170
171 encoding = streamEncoding;
172 sampleSizeInBits = streamFormat.getSampleSizeInBits();
173
174 } else if ( streamFormat.getSampleSizeInBits()==8 ) {
175
176 encoding = AudioFormat.Encoding.PCM_SIGNED;
177 sampleSizeInBits=8;
178
179 } else {
180
181 encoding = AudioFormat.Encoding.PCM_SIGNED;
182 sampleSizeInBits=streamFormat.getSampleSizeInBits();
183 }
184
185
186 format = new AudioFormat( encoding,
187 streamFormat.getSampleRate(),
188 sampleSizeInBits,
189 streamFormat.getChannels(),
190 streamFormat.getFrameSize(),
191 streamFormat.getFrameRate(),
192 true); // AU is always big endian
193
194
195 if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
196 fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AuFileFormat.AU_HEADERSIZE;
197 } else {
198 fileSize = AudioSystem.NOT_SPECIFIED;
199 }
200
201 fileFormat = new AuFileFormat( AudioFileFormat.Type.AU,
202 fileSize,
203 format,
204 (int)stream.getFrameLength() );
205
206 return fileFormat;
207 }
208
209
210 private InputStream getFileStream(AuFileFormat auFileFormat, InputStream audioStream) throws IOException {
211
212 // private method ... assumes auFileFormat is a supported file type
213
214 AudioFormat format = auFileFormat.getFormat();
215
216 int magic = AuFileFormat.AU_SUN_MAGIC;
217 int headerSize = AuFileFormat.AU_HEADERSIZE;
218 long dataSize = auFileFormat.getFrameLength();
219 //$$fb fix for Bug 4351296
220 //int dataSizeInBytes = dataSize * format.getFrameSize();
221 long dataSizeInBytes = (dataSize==AudioSystem.NOT_SPECIFIED)?UNKNOWN_SIZE:dataSize * format.getFrameSize();
222 if (dataSizeInBytes>0x7FFFFFFFl) {
223 dataSizeInBytes=UNKNOWN_SIZE;
224 }
225 int encoding_local = auFileFormat.getAuType();
226 int sampleRate = (int)format.getSampleRate();
227 int channels = format.getChannels();
228 //$$fb below is the fix for 4297100.
229 //boolean bigendian = format.isBigEndian();
230 boolean bigendian = true; // force bigendian
231
232 byte header[] = null;
233 ByteArrayInputStream headerStream = null;
234 ByteArrayOutputStream baos = null;
235 DataOutputStream dos = null;
236 SequenceInputStream auStream = null;
237
238 AudioFormat audioStreamFormat = null;
239 AudioFormat.Encoding encoding = null;
240 InputStream codedAudioStream = audioStream;
241
242 // if we need to do any format conversion, do it here.
243
244 codedAudioStream = audioStream;
245
246 if( audioStream instanceof AudioInputStream ) {
247
248
249 audioStreamFormat = ((AudioInputStream)audioStream).getFormat();
250 encoding = audioStreamFormat.getEncoding();
251
252 //$$ fb 2001-07-13: Bug 4391108
253 if( (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ||
254 (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)
255 && bigendian != audioStreamFormat.isBigEndian()) ) {
256
257 // plug in the transcoder to convert to PCM_SIGNED, bigendian
258 // NOTE: little endian AU is not common, so we're always converting
259 // to big endian unless the passed in audioFileFormat is little.
260 // $$fb this NOTE is superseded. We always write big endian au files, this is by far the standard.
261 codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
262 AudioFormat.Encoding.PCM_SIGNED,
263 audioStreamFormat.getSampleRate(),
264 audioStreamFormat.getSampleSizeInBits(),
265 audioStreamFormat.getChannels(),
266 audioStreamFormat.getFrameSize(),
267 audioStreamFormat.getFrameRate(),
268 bigendian),
269 (AudioInputStream)audioStream );
270
271
272 }
273 }
274
275 baos = new ByteArrayOutputStream();
276 dos = new DataOutputStream(baos);
277
278
279 if (bigendian) {
280 dos.writeInt(AuFileFormat.AU_SUN_MAGIC);
281 dos.writeInt(headerSize);
282 dos.writeInt((int)dataSizeInBytes);
283 dos.writeInt(encoding_local);
284 dos.writeInt(sampleRate);
285 dos.writeInt(channels);
286 } else {
287 dos.writeInt(AuFileFormat.AU_SUN_INV_MAGIC);
288 dos.writeInt(big2little(headerSize));
289 dos.writeInt(big2little((int)dataSizeInBytes));
290 dos.writeInt(big2little(encoding_local));
291 dos.writeInt(big2little(sampleRate));
292 dos.writeInt(big2little(channels));
293 }
294
295 // Now create a new InputStream from headerStream and the InputStream
296 // in audioStream
297
298 dos.close();
299 header = baos.toByteArray();
300 headerStream = new ByteArrayInputStream( header );
301 auStream = new SequenceInputStream(headerStream,
302 new NoCloseInputStream(codedAudioStream));
303
304 return auStream;
305 }
306
307 private int writeAuFile(InputStream in, AuFileFormat auFileFormat, OutputStream out) throws IOException {
308
309 int bytesRead = 0;
310 int bytesWritten = 0;
311 InputStream fileStream = getFileStream(auFileFormat, in);
312 byte buffer[] = new byte[bisBufferSize];
313 int maxLength = auFileFormat.getByteLength();
314
315 while( (bytesRead = fileStream.read( buffer )) >= 0 ) {
316 if (maxLength>0) {
317 if( bytesRead < maxLength ) {
318 out.write( buffer, 0, bytesRead );
319 bytesWritten += bytesRead;
320 maxLength -= bytesRead;
321 } else {
322 out.write( buffer, 0, maxLength );
323 bytesWritten += maxLength;
324 maxLength = 0;
325 break;
326 }
327 } else {
328 out.write( buffer, 0, bytesRead );
329 bytesWritten += bytesRead;
330 }
331 }
332
333 return bytesWritten;
334 }
335
336
337 }