1 /*
2 * Copyright (c) 1999, 2014, 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
41 import javax.sound.sampled.AudioFileFormat;
42 import javax.sound.sampled.AudioInputStream;
43 import javax.sound.sampled.AudioFormat;
44 import javax.sound.sampled.AudioSystem;
45
46
47 /**
48 * AU file writer.
49 *
50 * @author Jan Borgersen
51 */
52 public final class AuFileWriter extends SunFileWriter {
53
54 //$$fb value for length field if length is not known
55 public final static int UNKNOWN_SIZE=-1;
56
57 /**
58 * Constructs a new AuFileWriter object.
59 */
60 public AuFileWriter() {
61 super(new AudioFileFormat.Type[]{AudioFileFormat.Type.AU});
62 }
63
64 public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
65
66 AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
67 System.arraycopy(types, 0, filetypes, 0, types.length);
68
69 // make sure we can write this stream
70 AudioFormat format = stream.getFormat();
71 AudioFormat.Encoding encoding = format.getEncoding();
72
73 if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
74 (AudioFormat.Encoding.ULAW.equals(encoding)) ||
75 (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
76 (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {
77
78 return filetypes;
79 }
80
81 return new AudioFileFormat.Type[0];
82 }
83
84
85 public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
86
87 // we must know the total data length to calculate the file length
88 //$$fb 2001-07-13: fix for bug 4351296: do not throw an exception
89 //if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
90 // throw new IOException("stream length not specified");
91 //}
92
93 // throws IllegalArgumentException if not supported
94 AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
95
96 int bytesWritten = writeAuFile(stream, auFileFormat, out);
97 return bytesWritten;
98 }
99
100
101
102 public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
103
104 // throws IllegalArgumentException if not supported
105 AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
106
107 // first write the file without worrying about length fields
108 FileOutputStream fos = new FileOutputStream( out ); // throws IOException
109 BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
110 int bytesWritten = writeAuFile(stream, auFileFormat, bos );
111 bos.close();
112
113 // now, if length fields were not specified, calculate them,
114 // open as a random access file, write the appropriate fields,
115 // close again....
116 if( auFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
117
118 // $$kk: 10.22.99: jan: please either implement this or throw an exception!
119 // $$fb: 2001-07-13: done. Fixes Bug 4479981
120 RandomAccessFile raf=new RandomAccessFile(out, "rw");
121 if (raf.length()<=0x7FFFFFFFl) {
122 // skip AU magic and data offset field
123 raf.skipBytes(8);
124 raf.writeInt(bytesWritten-AuFileFormat.AU_HEADERSIZE);
125 // that's all
126 }
127 raf.close();
128 }
129
130 return bytesWritten;
131 }
132
133
134 // -------------------------------------------------------------
135
136 /**
137 * Returns the AudioFileFormat describing the file that will be written from this AudioInputStream.
138 * Throws IllegalArgumentException if not supported.
139 */
140 private AudioFileFormat getAudioFileFormat(AudioFileFormat.Type type, AudioInputStream stream) {
141
142 AudioFormat format = null;
143 AuFileFormat fileFormat = null;
144 AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED;
145
146 AudioFormat streamFormat = stream.getFormat();
147 AudioFormat.Encoding streamEncoding = streamFormat.getEncoding();
148
149
150 float sampleRate;
151 int sampleSizeInBits;
152 int channels;
153 int frameSize;
154 float frameRate;
155 int fileSize;
156
157 if( !types[0].equals(type) ) {
158 throw new IllegalArgumentException("File type " + type + " not supported.");
159 }
160
161 if( (AudioFormat.Encoding.ALAW.equals(streamEncoding)) ||
162 (AudioFormat.Encoding.ULAW.equals(streamEncoding)) ) {
163
164 encoding = streamEncoding;
165 sampleSizeInBits = streamFormat.getSampleSizeInBits();
166
167 } else if ( streamFormat.getSampleSizeInBits()==8 ) {
168
169 encoding = AudioFormat.Encoding.PCM_SIGNED;
170 sampleSizeInBits=8;
171
172 } else {
173
174 encoding = AudioFormat.Encoding.PCM_SIGNED;
175 sampleSizeInBits=streamFormat.getSampleSizeInBits();
176 }
177
178
179 format = new AudioFormat( encoding,
180 streamFormat.getSampleRate(),
181 sampleSizeInBits,
182 streamFormat.getChannels(),
183 streamFormat.getFrameSize(),
184 streamFormat.getFrameRate(),
185 true); // AU is always big endian
186
187
188 if( stream.getFrameLength()!=AudioSystem.NOT_SPECIFIED ) {
189 fileSize = (int)stream.getFrameLength()*streamFormat.getFrameSize() + AuFileFormat.AU_HEADERSIZE;
190 } else {
191 fileSize = AudioSystem.NOT_SPECIFIED;
192 }
193
194 fileFormat = new AuFileFormat( AudioFileFormat.Type.AU,
195 fileSize,
196 format,
197 (int)stream.getFrameLength() );
198
199 return fileFormat;
200 }
201
202
203 private InputStream getFileStream(AuFileFormat auFileFormat, InputStream audioStream) throws IOException {
204
205 // private method ... assumes auFileFormat is a supported file type
206
207 AudioFormat format = auFileFormat.getFormat();
208
209 int magic = AuFileFormat.AU_SUN_MAGIC;
210 int headerSize = AuFileFormat.AU_HEADERSIZE;
211 long dataSize = auFileFormat.getFrameLength();
212 //$$fb fix for Bug 4351296
213 //int dataSizeInBytes = dataSize * format.getFrameSize();
214 long dataSizeInBytes = (dataSize==AudioSystem.NOT_SPECIFIED)?UNKNOWN_SIZE:dataSize * format.getFrameSize();
215 if (dataSizeInBytes>0x7FFFFFFFl) {
216 dataSizeInBytes=UNKNOWN_SIZE;
217 }
218 int encoding_local = auFileFormat.getAuType();
219 int sampleRate = (int)format.getSampleRate();
220 int channels = format.getChannels();
221 //$$fb below is the fix for 4297100.
222 //boolean bigendian = format.isBigEndian();
223 boolean bigendian = true; // force bigendian
224
225 byte header[] = null;
226 ByteArrayInputStream headerStream = null;
227 ByteArrayOutputStream baos = null;
228 DataOutputStream dos = null;
229 SequenceInputStream auStream = null;
230
231 AudioFormat audioStreamFormat = null;
232 AudioFormat.Encoding encoding = null;
233 InputStream codedAudioStream = audioStream;
234
235 // if we need to do any format conversion, do it here.
236
237 codedAudioStream = audioStream;
238
239 if( audioStream instanceof AudioInputStream ) {
240
241
242 audioStreamFormat = ((AudioInputStream)audioStream).getFormat();
243 encoding = audioStreamFormat.getEncoding();
244
245 //$$ fb 2001-07-13: Bug 4391108
246 if( (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ||
247 (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)
248 && bigendian != audioStreamFormat.isBigEndian()) ) {
249
250 // plug in the transcoder to convert to PCM_SIGNED, bigendian
251 // NOTE: little endian AU is not common, so we're always converting
252 // to big endian unless the passed in audioFileFormat is little.
253 // $$fb this NOTE is superseded. We always write big endian au files, this is by far the standard.
254 codedAudioStream = AudioSystem.getAudioInputStream( new AudioFormat (
255 AudioFormat.Encoding.PCM_SIGNED,
256 audioStreamFormat.getSampleRate(),
257 audioStreamFormat.getSampleSizeInBits(),
258 audioStreamFormat.getChannels(),
259 audioStreamFormat.getFrameSize(),
260 audioStreamFormat.getFrameRate(),
261 bigendian),
262 (AudioInputStream)audioStream );
263
264
265 }
266 }
267
268 baos = new ByteArrayOutputStream();
269 dos = new DataOutputStream(baos);
270
271
272 if (bigendian) {
273 dos.writeInt(AuFileFormat.AU_SUN_MAGIC);
274 dos.writeInt(headerSize);
275 dos.writeInt((int)dataSizeInBytes);
276 dos.writeInt(encoding_local);
277 dos.writeInt(sampleRate);
278 dos.writeInt(channels);
279 } else {
280 dos.writeInt(AuFileFormat.AU_SUN_INV_MAGIC);
281 dos.writeInt(big2little(headerSize));
282 dos.writeInt(big2little((int)dataSizeInBytes));
283 dos.writeInt(big2little(encoding_local));
284 dos.writeInt(big2little(sampleRate));
285 dos.writeInt(big2little(channels));
286 }
287
288 // Now create a new InputStream from headerStream and the InputStream
289 // in audioStream
290
291 dos.close();
292 header = baos.toByteArray();
293 headerStream = new ByteArrayInputStream( header );
294 auStream = new SequenceInputStream(headerStream,
295 new NoCloseInputStream(codedAudioStream));
296
297 return auStream;
298 }
299
300 private int writeAuFile(InputStream in, AuFileFormat auFileFormat, OutputStream out) throws IOException {
301
302 int bytesRead = 0;
303 int bytesWritten = 0;
304 InputStream fileStream = getFileStream(auFileFormat, in);
305 byte buffer[] = new byte[bisBufferSize];
306 int maxLength = auFileFormat.getByteLength();
307
308 while( (bytesRead = fileStream.read( buffer )) >= 0 ) {
309 if (maxLength>0) {
310 if( bytesRead < maxLength ) {
311 out.write( buffer, 0, bytesRead );
312 bytesWritten += bytesRead;
313 maxLength -= bytesRead;
314 } else {
315 out.write( buffer, 0, maxLength );
316 bytesWritten += maxLength;
317 maxLength = 0;
318 break;
319 }
320 } else {
321 out.write( buffer, 0, bytesRead );
322 bytesWritten += bytesRead;
323 }
324 }
325
326 return bytesWritten;
327 }
328
329
330 }