J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2007 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.media.sound; |
| 27 | |
| 28 | import java.util.Vector; |
| 29 | import java.io.File; |
| 30 | import java.io.InputStream; |
| 31 | import java.io.OutputStream; |
| 32 | import java.io.IOException; |
| 33 | import java.io.EOFException; |
| 34 | import java.net.URL; |
| 35 | import java.net.MalformedURLException; |
| 36 | |
| 37 | import java.io.BufferedInputStream; |
| 38 | import java.io.BufferedOutputStream; |
| 39 | import java.io.DataInputStream; |
| 40 | import java.io.FileInputStream; |
| 41 | import java.io.DataOutputStream; |
| 42 | import java.io.FileOutputStream; |
| 43 | import java.io.ByteArrayInputStream; |
| 44 | import java.io.ByteArrayOutputStream; |
| 45 | import java.io.SequenceInputStream; |
| 46 | |
| 47 | import javax.sound.sampled.AudioFileFormat; |
| 48 | import javax.sound.sampled.AudioInputStream; |
| 49 | import javax.sound.sampled.AudioFormat; |
| 50 | import javax.sound.sampled.AudioSystem; |
| 51 | import javax.sound.sampled.UnsupportedAudioFileException; |
| 52 | |
| 53 | |
| 54 | |
| 55 | /** |
| 56 | * WAVE file reader. |
| 57 | * |
| 58 | * @author Kara Kytle |
| 59 | * @author Jan Borgersen |
| 60 | * @author Florian Bomers |
| 61 | */ |
| 62 | public class WaveFileReader extends SunFileReader { |
| 63 | |
| 64 | private static final int MAX_READ_LENGTH = 12; |
| 65 | |
| 66 | /** |
| 67 | * WAVE reader type |
| 68 | */ |
| 69 | |
| 70 | public static final AudioFileFormat.Type types[] = { |
| 71 | AudioFileFormat.Type.WAVE |
| 72 | }; |
| 73 | |
| 74 | |
| 75 | /** |
| 76 | * Constructs a new WaveFileReader object. |
| 77 | */ |
| 78 | public WaveFileReader() { |
| 79 | } |
| 80 | |
| 81 | |
| 82 | /** |
| 83 | * Obtains the audio file format of the input stream provided. The stream must |
| 84 | * point to valid audio file data. In general, audio file providers may |
| 85 | * need to read some data from the stream before determining whether they |
| 86 | * support it. These parsers must |
| 87 | * be able to mark the stream, read enough data to determine whether they |
| 88 | * support the stream, and, if not, reset the stream's read pointer to its original |
| 89 | * position. If the input stream does not support this, this method may fail |
| 90 | * with an IOException. |
| 91 | * @param stream the input stream from which file format information should be |
| 92 | * extracted |
| 93 | * @return an <code>AudioFileFormat</code> object describing the audio file format |
| 94 | * @throws UnsupportedAudioFileException if the stream does not point to valid audio |
| 95 | * file data recognized by the system |
| 96 | * @throws IOException if an I/O exception occurs |
| 97 | * @see InputStream#markSupported |
| 98 | * @see InputStream#mark |
| 99 | */ |
| 100 | public AudioFileFormat getAudioFileFormat(InputStream stream) throws UnsupportedAudioFileException, IOException { |
| 101 | // fix for 4489272: AudioSystem.getAudioFileFormat() fails for InputStream, but works for URL |
| 102 | AudioFileFormat aff = getFMT(stream, true); |
| 103 | // the following is not strictly necessary - but was implemented like that in 1.3.0 - 1.4.1 |
| 104 | // so I leave it as it was. May remove this for 1.5.0 |
| 105 | stream.reset(); |
| 106 | return aff; |
| 107 | } |
| 108 | |
| 109 | |
| 110 | /** |
| 111 | * Obtains the audio file format of the URL provided. The URL must |
| 112 | * point to valid audio file data. |
| 113 | * @param url the URL from which file format information should be |
| 114 | * extracted |
| 115 | * @return an <code>AudioFileFormat</code> object describing the audio file format |
| 116 | * @throws UnsupportedAudioFileException if the URL does not point to valid audio |
| 117 | * file data recognized by the system |
| 118 | * @throws IOException if an I/O exception occurs |
| 119 | */ |
| 120 | public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException { |
| 121 | InputStream urlStream = url.openStream(); // throws IOException |
| 122 | AudioFileFormat fileFormat = null; |
| 123 | try { |
| 124 | fileFormat = getFMT(urlStream, false); |
| 125 | } finally { |
| 126 | urlStream.close(); |
| 127 | } |
| 128 | return fileFormat; |
| 129 | } |
| 130 | |
| 131 | |
| 132 | /** |
| 133 | * Obtains the audio file format of the File provided. The File must |
| 134 | * point to valid audio file data. |
| 135 | * @param file the File from which file format information should be |
| 136 | * extracted |
| 137 | * @return an <code>AudioFileFormat</code> object describing the audio file format |
| 138 | * @throws UnsupportedAudioFileException if the File does not point to valid audio |
| 139 | * file data recognized by the system |
| 140 | * @throws IOException if an I/O exception occurs |
| 141 | */ |
| 142 | public AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException { |
| 143 | AudioFileFormat fileFormat = null; |
| 144 | FileInputStream fis = new FileInputStream(file); // throws IOException |
| 145 | // part of fix for 4325421 |
| 146 | try { |
| 147 | fileFormat = getFMT(fis, false); |
| 148 | } finally { |
| 149 | fis.close(); |
| 150 | } |
| 151 | |
| 152 | return fileFormat; |
| 153 | } |
| 154 | |
| 155 | |
| 156 | /** |
| 157 | * Obtains an audio stream from the input stream provided. The stream must |
| 158 | * point to valid audio file data. In general, audio file providers may |
| 159 | * need to read some data from the stream before determining whether they |
| 160 | * support it. These parsers must |
| 161 | * be able to mark the stream, read enough data to determine whether they |
| 162 | * support the stream, and, if not, reset the stream's read pointer to its original |
| 163 | * position. If the input stream does not support this, this method may fail |
| 164 | * with an IOException. |
| 165 | * @param stream the input stream from which the <code>AudioInputStream</code> should be |
| 166 | * constructed |
| 167 | * @return an <code>AudioInputStream</code> object based on the audio file data contained |
| 168 | * in the input stream. |
| 169 | * @throws UnsupportedAudioFileException if the stream does not point to valid audio |
| 170 | * file data recognized by the system |
| 171 | * @throws IOException if an I/O exception occurs |
| 172 | * @see InputStream#markSupported |
| 173 | * @see InputStream#mark |
| 174 | */ |
| 175 | public AudioInputStream getAudioInputStream(InputStream stream) throws UnsupportedAudioFileException, IOException { |
| 176 | // getFMT leaves the input stream at the beginning of the audio data |
| 177 | AudioFileFormat fileFormat = getFMT(stream, true); // throws UnsupportedAudioFileException, IOException |
| 178 | |
| 179 | // we've got everything, and the stream is at the |
| 180 | // beginning of the audio data, so return an AudioInputStream. |
| 181 | return new AudioInputStream(stream, fileFormat.getFormat(), fileFormat.getFrameLength()); |
| 182 | } |
| 183 | |
| 184 | |
| 185 | /** |
| 186 | * Obtains an audio stream from the URL provided. The URL must |
| 187 | * point to valid audio file data. |
| 188 | * @param url the URL for which the <code>AudioInputStream</code> should be |
| 189 | * constructed |
| 190 | * @return an <code>AudioInputStream</code> object based on the audio file data pointed |
| 191 | * to by the URL |
| 192 | * @throws UnsupportedAudioFileException if the URL does not point to valid audio |
| 193 | * file data recognized by the system |
| 194 | * @throws IOException if an I/O exception occurs |
| 195 | */ |
| 196 | public AudioInputStream getAudioInputStream(URL url) throws UnsupportedAudioFileException, IOException { |
| 197 | InputStream urlStream = url.openStream(); // throws IOException |
| 198 | AudioFileFormat fileFormat = null; |
| 199 | try { |
| 200 | fileFormat = getFMT(urlStream, false); |
| 201 | } finally { |
| 202 | if (fileFormat == null) { |
| 203 | urlStream.close(); |
| 204 | } |
| 205 | } |
| 206 | return new AudioInputStream(urlStream, fileFormat.getFormat(), fileFormat.getFrameLength()); |
| 207 | } |
| 208 | |
| 209 | |
| 210 | /** |
| 211 | * Obtains an audio stream from the File provided. The File must |
| 212 | * point to valid audio file data. |
| 213 | * @param file the File for which the <code>AudioInputStream</code> should be |
| 214 | * constructed |
| 215 | * @return an <code>AudioInputStream</code> object based on the audio file data pointed |
| 216 | * to by the File |
| 217 | * @throws UnsupportedAudioFileException if the File does not point to valid audio |
| 218 | * file data recognized by the system |
| 219 | * @throws IOException if an I/O exception occurs |
| 220 | */ |
| 221 | public AudioInputStream getAudioInputStream(File file) throws UnsupportedAudioFileException, IOException { |
| 222 | FileInputStream fis = new FileInputStream(file); // throws IOException |
| 223 | AudioFileFormat fileFormat = null; |
| 224 | // part of fix for 4325421 |
| 225 | try { |
| 226 | fileFormat = getFMT(fis, false); |
| 227 | } finally { |
| 228 | if (fileFormat == null) { |
| 229 | fis.close(); |
| 230 | } |
| 231 | } |
| 232 | return new AudioInputStream(fis, fileFormat.getFormat(), fileFormat.getFrameLength()); |
| 233 | } |
| 234 | |
| 235 | |
| 236 | //-------------------------------------------------------------------- |
| 237 | |
| 238 | |
| 239 | private AudioFileFormat getFMT(InputStream stream, boolean doReset) throws UnsupportedAudioFileException, IOException { |
| 240 | |
| 241 | // assumes sream is rewound |
| 242 | |
| 243 | int bytesRead; |
| 244 | int nread = 0; |
| 245 | int fmt; |
| 246 | int length = 0; |
| 247 | int wav_type = 0; |
| 248 | short channels; |
| 249 | long sampleRate; |
| 250 | long avgBytesPerSec; |
| 251 | short blockAlign; |
| 252 | int sampleSizeInBits; |
| 253 | AudioFormat.Encoding encoding = null; |
| 254 | |
| 255 | DataInputStream dis = new DataInputStream( stream ); |
| 256 | |
| 257 | if (doReset) { |
| 258 | dis.mark(MAX_READ_LENGTH); |
| 259 | } |
| 260 | |
| 261 | int magic = dis.readInt(); |
| 262 | int fileLength = rllong(dis); |
| 263 | int waveMagic = dis.readInt(); |
| 264 | int totallength; |
| 265 | if (fileLength <= 0) { |
| 266 | fileLength = AudioSystem.NOT_SPECIFIED; |
| 267 | totallength = AudioSystem.NOT_SPECIFIED; |
| 268 | } else { |
| 269 | totallength = fileLength + 8; |
| 270 | } |
| 271 | |
| 272 | if ((magic != WaveFileFormat.RIFF_MAGIC) || (waveMagic != WaveFileFormat.WAVE_MAGIC)) { |
| 273 | // not WAVE, throw UnsupportedAudioFileException |
| 274 | if (doReset) { |
| 275 | dis.reset(); |
| 276 | } |
| 277 | throw new UnsupportedAudioFileException("not a WAVE file"); |
| 278 | } |
| 279 | |
| 280 | // find and read the "fmt" chunk |
| 281 | // we break out of this loop either by hitting EOF or finding "fmt " |
| 282 | while(true) { |
| 283 | |
| 284 | try { |
| 285 | fmt = dis.readInt(); |
| 286 | nread += 4; |
| 287 | if( fmt==WaveFileFormat.FMT_MAGIC ) { |
| 288 | // we've found the 'fmt' chunk |
| 289 | break; |
| 290 | } else { |
| 291 | // else not 'fmt', skip this chunk |
| 292 | length = rllong(dis); |
| 293 | nread += 4; |
| 294 | if (length % 2 > 0) length++; |
| 295 | nread += dis.skipBytes(length); |
| 296 | } |
| 297 | } catch (EOFException eof) { |
| 298 | // we've reached the end of the file without finding the 'fmt' chunk |
| 299 | throw new UnsupportedAudioFileException("Not a valid WAV file"); |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | // Read the format chunk size. |
| 304 | length = rllong(dis); |
| 305 | nread += 4; |
| 306 | |
| 307 | // This is the nread position at the end of the format chunk |
| 308 | int endLength = nread + length; |
| 309 | |
| 310 | // Read the wave format data out of the format chunk. |
| 311 | |
| 312 | // encoding. |
| 313 | wav_type = rlshort(dis); nread += 2; |
| 314 | |
| 315 | if (wav_type == WaveFileFormat.WAVE_FORMAT_PCM) |
| 316 | encoding = AudioFormat.Encoding.PCM_SIGNED; // if 8-bit, we need PCM_UNSIGNED, below... |
| 317 | else if ( wav_type == WaveFileFormat.WAVE_FORMAT_ALAW ) |
| 318 | encoding = AudioFormat.Encoding.ALAW; |
| 319 | else if ( wav_type == WaveFileFormat.WAVE_FORMAT_MULAW ) |
| 320 | encoding = AudioFormat.Encoding.ULAW; |
| 321 | else { |
| 322 | // we don't support any other WAVE formats.... |
| 323 | throw new UnsupportedAudioFileException("Not a supported WAV file"); |
| 324 | } |
| 325 | // channels |
| 326 | channels = rlshort(dis); nread += 2; |
| 327 | |
| 328 | // sample rate. |
| 329 | sampleRate = rllong(dis); nread += 4; |
| 330 | |
| 331 | // this is the avgBytesPerSec |
| 332 | avgBytesPerSec = rllong(dis); nread += 4; |
| 333 | |
| 334 | // this is blockAlign value |
| 335 | blockAlign = rlshort(dis); nread += 2; |
| 336 | |
| 337 | // this is the PCM-specific value bitsPerSample |
| 338 | sampleSizeInBits = (int)rlshort(dis); nread += 2; |
| 339 | |
| 340 | // if sampleSizeInBits==8, we need to use PCM_UNSIGNED |
| 341 | if ((sampleSizeInBits==8) && encoding.equals(AudioFormat.Encoding.PCM_SIGNED)) |
| 342 | encoding = AudioFormat.Encoding.PCM_UNSIGNED; |
| 343 | |
| 344 | // skip any difference between the length of the format chunk |
| 345 | // and what we read |
| 346 | |
| 347 | // if the length of the chunk is odd, there's an extra pad byte |
| 348 | // at the end. i've never seen this in the fmt chunk, but we |
| 349 | // should check to make sure. |
| 350 | |
| 351 | if (length % 2 != 0) length += 1; |
| 352 | |
| 353 | // $$jb: 07.28.99: endLength>nread, not length>nread. |
| 354 | // This fixes #4257986 |
| 355 | if (endLength > nread) |
| 356 | nread += dis.skipBytes(endLength - nread); |
| 357 | |
| 358 | // we have a format now, so find the "data" chunk |
| 359 | // we break out of this loop either by hitting EOF or finding "data" |
| 360 | // $$kk: if "data" chunk precedes "fmt" chunk we are hosed -- can this legally happen? |
| 361 | nread = 0; |
| 362 | while(true) { |
| 363 | try{ |
| 364 | int datahdr = dis.readInt(); |
| 365 | nread+=4; |
| 366 | if (datahdr == WaveFileFormat.DATA_MAGIC) { |
| 367 | // we've found the 'data' chunk |
| 368 | break; |
| 369 | } else { |
| 370 | // else not 'data', skip this chunk |
| 371 | int thisLength = rllong(dis); nread += 4; |
| 372 | if (thisLength % 2 > 0) thisLength++; |
| 373 | nread += dis.skipBytes(thisLength); |
| 374 | } |
| 375 | } catch (EOFException eof) { |
| 376 | // we've reached the end of the file without finding the 'data' chunk |
| 377 | throw new UnsupportedAudioFileException("Not a valid WAV file"); |
| 378 | } |
| 379 | } |
| 380 | // this is the length of the data chunk |
| 381 | int dataLength = rllong(dis); nread += 4; |
| 382 | |
| 383 | // now build the new AudioFileFormat and return |
| 384 | |
| 385 | AudioFormat format = new AudioFormat(encoding, |
| 386 | (float)sampleRate, |
| 387 | sampleSizeInBits, channels, |
| 388 | calculatePCMFrameSize(sampleSizeInBits, channels), |
| 389 | (float)sampleRate, false); |
| 390 | |
| 391 | return new WaveFileFormat(AudioFileFormat.Type.WAVE, |
| 392 | totallength, |
| 393 | format, |
| 394 | dataLength / format.getFrameSize()); |
| 395 | } |
| 396 | |
| 397 | } |