MediaScanner.java revision da8fe0faf5b52ef65bd07b6f47479ac537d42d47
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.media; 18 19import org.xml.sax.Attributes; 20import org.xml.sax.ContentHandler; 21import org.xml.sax.SAXException; 22 23import android.content.ContentUris; 24import android.content.ContentValues; 25import android.content.Context; 26import android.content.IContentProvider; 27import android.database.Cursor; 28import android.database.SQLException; 29import android.drm.DrmManagerClient; 30import android.graphics.BitmapFactory; 31import android.mtp.MtpConstants; 32import android.net.Uri; 33import android.os.Environment; 34import android.os.RemoteException; 35import android.os.SystemProperties; 36import android.provider.MediaStore; 37import android.provider.MediaStore.Audio; 38import android.provider.MediaStore.Audio.Playlists; 39import android.provider.MediaStore.Files; 40import android.provider.MediaStore.Files.FileColumns; 41import android.provider.MediaStore.Images; 42import android.provider.MediaStore.Video; 43import android.provider.Settings; 44import android.sax.Element; 45import android.sax.ElementListener; 46import android.sax.RootElement; 47import android.text.TextUtils; 48import android.util.Log; 49import android.util.Xml; 50 51import java.io.BufferedReader; 52import java.io.File; 53import java.io.FileDescriptor; 54import java.io.FileInputStream; 55import java.io.IOException; 56import java.io.InputStreamReader; 57import java.util.ArrayList; 58import java.util.HashSet; 59import java.util.Iterator; 60import java.util.Locale; 61 62import libcore.io.ErrnoException; 63import libcore.io.Libcore; 64 65/** 66 * Internal service helper that no-one should use directly. 67 * 68 * The way the scan currently works is: 69 * - The Java MediaScannerService creates a MediaScanner (this class), and calls 70 * MediaScanner.scanDirectories on it. 71 * - scanDirectories() calls the native processDirectory() for each of the specified directories. 72 * - the processDirectory() JNI method wraps the provided mediascanner client in a native 73 * 'MyMediaScannerClient' class, then calls processDirectory() on the native MediaScanner 74 * object (which got created when the Java MediaScanner was created). 75 * - native MediaScanner.processDirectory() calls 76 * doProcessDirectory(), which recurses over the folder, and calls 77 * native MyMediaScannerClient.scanFile() for every file whose extension matches. 78 * - native MyMediaScannerClient.scanFile() calls back on Java MediaScannerClient.scanFile, 79 * which calls doScanFile, which after some setup calls back down to native code, calling 80 * MediaScanner.processFile(). 81 * - MediaScanner.processFile() calls one of several methods, depending on the type of the 82 * file: parseMP3, parseMP4, parseMidi, parseOgg or parseWMA. 83 * - each of these methods gets metadata key/value pairs from the file, and repeatedly 84 * calls native MyMediaScannerClient.handleStringTag, which calls back up to its Java 85 * counterparts in this file. 86 * - Java handleStringTag() gathers the key/value pairs that it's interested in. 87 * - once processFile returns and we're back in Java code in doScanFile(), it calls 88 * Java MyMediaScannerClient.endFile(), which takes all the data that's been 89 * gathered and inserts an entry in to the database. 90 * 91 * In summary: 92 * Java MediaScannerService calls 93 * Java MediaScanner scanDirectories, which calls 94 * Java MediaScanner processDirectory (native method), which calls 95 * native MediaScanner processDirectory, which calls 96 * native MyMediaScannerClient scanFile, which calls 97 * Java MyMediaScannerClient scanFile, which calls 98 * Java MediaScannerClient doScanFile, which calls 99 * Java MediaScanner processFile (native method), which calls 100 * native MediaScanner processFile, which calls 101 * native parseMP3, parseMP4, parseMidi, parseOgg or parseWMA, which calls 102 * native MyMediaScanner handleStringTag, which calls 103 * Java MyMediaScanner handleStringTag. 104 * Once MediaScanner processFile returns, an entry is inserted in to the database. 105 * 106 * The MediaScanner class is not thread-safe, so it should only be used in a single threaded manner. 107 * 108 * {@hide} 109 */ 110public class MediaScanner 111{ 112 static { 113 System.loadLibrary("media_jni"); 114 native_init(); 115 } 116 117 private final static String TAG = "MediaScanner"; 118 119 private static final String[] FILES_PRESCAN_PROJECTION = new String[] { 120 Files.FileColumns._ID, // 0 121 Files.FileColumns.DATA, // 1 122 Files.FileColumns.FORMAT, // 2 123 Files.FileColumns.DATE_MODIFIED, // 3 124 }; 125 126 private static final String[] ID_PROJECTION = new String[] { 127 Files.FileColumns._ID, 128 }; 129 130 private static final int FILES_PRESCAN_ID_COLUMN_INDEX = 0; 131 private static final int FILES_PRESCAN_PATH_COLUMN_INDEX = 1; 132 private static final int FILES_PRESCAN_FORMAT_COLUMN_INDEX = 2; 133 private static final int FILES_PRESCAN_DATE_MODIFIED_COLUMN_INDEX = 3; 134 135 private static final String[] PLAYLIST_MEMBERS_PROJECTION = new String[] { 136 Audio.Playlists.Members.PLAYLIST_ID, // 0 137 }; 138 139 private static final int ID_PLAYLISTS_COLUMN_INDEX = 0; 140 private static final int PATH_PLAYLISTS_COLUMN_INDEX = 1; 141 private static final int DATE_MODIFIED_PLAYLISTS_COLUMN_INDEX = 2; 142 143 private static final String RINGTONES_DIR = "/ringtones/"; 144 private static final String NOTIFICATIONS_DIR = "/notifications/"; 145 private static final String ALARMS_DIR = "/alarms/"; 146 private static final String MUSIC_DIR = "/music/"; 147 private static final String PODCAST_DIR = "/podcasts/"; 148 149 private static final String[] ID3_GENRES = { 150 // ID3v1 Genres 151 "Blues", 152 "Classic Rock", 153 "Country", 154 "Dance", 155 "Disco", 156 "Funk", 157 "Grunge", 158 "Hip-Hop", 159 "Jazz", 160 "Metal", 161 "New Age", 162 "Oldies", 163 "Other", 164 "Pop", 165 "R&B", 166 "Rap", 167 "Reggae", 168 "Rock", 169 "Techno", 170 "Industrial", 171 "Alternative", 172 "Ska", 173 "Death Metal", 174 "Pranks", 175 "Soundtrack", 176 "Euro-Techno", 177 "Ambient", 178 "Trip-Hop", 179 "Vocal", 180 "Jazz+Funk", 181 "Fusion", 182 "Trance", 183 "Classical", 184 "Instrumental", 185 "Acid", 186 "House", 187 "Game", 188 "Sound Clip", 189 "Gospel", 190 "Noise", 191 "AlternRock", 192 "Bass", 193 "Soul", 194 "Punk", 195 "Space", 196 "Meditative", 197 "Instrumental Pop", 198 "Instrumental Rock", 199 "Ethnic", 200 "Gothic", 201 "Darkwave", 202 "Techno-Industrial", 203 "Electronic", 204 "Pop-Folk", 205 "Eurodance", 206 "Dream", 207 "Southern Rock", 208 "Comedy", 209 "Cult", 210 "Gangsta", 211 "Top 40", 212 "Christian Rap", 213 "Pop/Funk", 214 "Jungle", 215 "Native American", 216 "Cabaret", 217 "New Wave", 218 "Psychadelic", 219 "Rave", 220 "Showtunes", 221 "Trailer", 222 "Lo-Fi", 223 "Tribal", 224 "Acid Punk", 225 "Acid Jazz", 226 "Polka", 227 "Retro", 228 "Musical", 229 "Rock & Roll", 230 "Hard Rock", 231 // The following genres are Winamp extensions 232 "Folk", 233 "Folk-Rock", 234 "National Folk", 235 "Swing", 236 "Fast Fusion", 237 "Bebob", 238 "Latin", 239 "Revival", 240 "Celtic", 241 "Bluegrass", 242 "Avantgarde", 243 "Gothic Rock", 244 "Progressive Rock", 245 "Psychedelic Rock", 246 "Symphonic Rock", 247 "Slow Rock", 248 "Big Band", 249 "Chorus", 250 "Easy Listening", 251 "Acoustic", 252 "Humour", 253 "Speech", 254 "Chanson", 255 "Opera", 256 "Chamber Music", 257 "Sonata", 258 "Symphony", 259 "Booty Bass", 260 "Primus", 261 "Porn Groove", 262 "Satire", 263 "Slow Jam", 264 "Club", 265 "Tango", 266 "Samba", 267 "Folklore", 268 "Ballad", 269 "Power Ballad", 270 "Rhythmic Soul", 271 "Freestyle", 272 "Duet", 273 "Punk Rock", 274 "Drum Solo", 275 "A capella", 276 "Euro-House", 277 "Dance Hall", 278 // The following ones seem to be fairly widely supported as well 279 "Goa", 280 "Drum & Bass", 281 "Club-House", 282 "Hardcore", 283 "Terror", 284 "Indie", 285 "Britpop", 286 "Negerpunk", 287 "Polsk Punk", 288 "Beat", 289 "Christian Gangsta", 290 "Heavy Metal", 291 "Black Metal", 292 "Crossover", 293 "Contemporary Christian", 294 "Christian Rock", 295 "Merengue", 296 "Salsa", 297 "Thrash Metal", 298 "Anime", 299 "JPop", 300 "Synthpop", 301 // 148 and up don't seem to have been defined yet. 302 }; 303 304 private int mNativeContext; 305 private Context mContext; 306 private IContentProvider mMediaProvider; 307 private Uri mAudioUri; 308 private Uri mVideoUri; 309 private Uri mImagesUri; 310 private Uri mThumbsUri; 311 private Uri mPlaylistsUri; 312 private Uri mFilesUri; 313 private boolean mProcessPlaylists, mProcessGenres; 314 private int mMtpObjectHandle; 315 316 private final String mExternalStoragePath; 317 private final boolean mExternalIsEmulated; 318 319 /** whether to use bulk inserts or individual inserts for each item */ 320 private static final boolean ENABLE_BULK_INSERTS = true; 321 322 // used when scanning the image database so we know whether we have to prune 323 // old thumbnail files 324 private int mOriginalCount; 325 /** Whether the database had any entries in it before the scan started */ 326 private boolean mWasEmptyPriorToScan = false; 327 /** Whether the scanner has set a default sound for the ringer ringtone. */ 328 private boolean mDefaultRingtoneSet; 329 /** Whether the scanner has set a default sound for the notification ringtone. */ 330 private boolean mDefaultNotificationSet; 331 /** Whether the scanner has set a default sound for the alarm ringtone. */ 332 private boolean mDefaultAlarmSet; 333 /** The filename for the default sound for the ringer ringtone. */ 334 private String mDefaultRingtoneFilename; 335 /** The filename for the default sound for the notification ringtone. */ 336 private String mDefaultNotificationFilename; 337 /** The filename for the default sound for the alarm ringtone. */ 338 private String mDefaultAlarmAlertFilename; 339 /** 340 * The prefix for system properties that define the default sound for 341 * ringtones. Concatenate the name of the setting from Settings 342 * to get the full system property. 343 */ 344 private static final String DEFAULT_RINGTONE_PROPERTY_PREFIX = "ro.config."; 345 346 // set to true if file path comparisons should be case insensitive. 347 // this should be set when scanning files on a case insensitive file system. 348 private boolean mCaseInsensitivePaths; 349 350 private final BitmapFactory.Options mBitmapOptions = new BitmapFactory.Options(); 351 352 private static class FileEntry { 353 long mRowId; 354 String mPath; 355 long mLastModified; 356 int mFormat; 357 boolean mLastModifiedChanged; 358 359 FileEntry(long rowId, String path, long lastModified, int format) { 360 mRowId = rowId; 361 mPath = path; 362 mLastModified = lastModified; 363 mFormat = format; 364 mLastModifiedChanged = false; 365 } 366 367 @Override 368 public String toString() { 369 return mPath + " mRowId: " + mRowId; 370 } 371 } 372 373 private static class PlaylistEntry { 374 String path; 375 long bestmatchid; 376 int bestmatchlevel; 377 } 378 379 private ArrayList<PlaylistEntry> mPlaylistEntries = new ArrayList<PlaylistEntry>(); 380 381 private MediaInserter mMediaInserter; 382 383 private ArrayList<FileEntry> mPlayLists; 384 385 private DrmManagerClient mDrmManagerClient = null; 386 387 public MediaScanner(Context c) { 388 native_setup(); 389 mContext = c; 390 mBitmapOptions.inSampleSize = 1; 391 mBitmapOptions.inJustDecodeBounds = true; 392 393 setDefaultRingtoneFileNames(); 394 395 mExternalStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath(); 396 mExternalIsEmulated = Environment.isExternalStorageEmulated(); 397 //mClient.testGenreNameConverter(); 398 } 399 400 private void setDefaultRingtoneFileNames() { 401 mDefaultRingtoneFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX 402 + Settings.System.RINGTONE); 403 mDefaultNotificationFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX 404 + Settings.System.NOTIFICATION_SOUND); 405 mDefaultAlarmAlertFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX 406 + Settings.System.ALARM_ALERT); 407 } 408 409 private final MyMediaScannerClient mClient = new MyMediaScannerClient(); 410 411 private boolean isDrmEnabled() { 412 String prop = SystemProperties.get("drm.service.enabled"); 413 return prop != null && prop.equals("true"); 414 } 415 416 private class MyMediaScannerClient implements MediaScannerClient { 417 418 private String mArtist; 419 private String mAlbumArtist; // use this if mArtist is missing 420 private String mAlbum; 421 private String mTitle; 422 private String mComposer; 423 private String mGenre; 424 private String mMimeType; 425 private int mFileType; 426 private int mTrack; 427 private int mYear; 428 private int mDuration; 429 private String mPath; 430 private long mLastModified; 431 private long mFileSize; 432 private String mWriter; 433 private int mCompilation; 434 private boolean mIsDrm; 435 private boolean mNoMedia; // flag to suppress file from appearing in media tables 436 private int mWidth; 437 private int mHeight; 438 439 public FileEntry beginFile(String path, String mimeType, long lastModified, 440 long fileSize, boolean isDirectory, boolean noMedia) { 441 mMimeType = mimeType; 442 mFileType = 0; 443 mFileSize = fileSize; 444 445 if (!isDirectory) { 446 if (!noMedia && isNoMediaFile(path)) { 447 noMedia = true; 448 } 449 mNoMedia = noMedia; 450 451 // try mimeType first, if it is specified 452 if (mimeType != null) { 453 mFileType = MediaFile.getFileTypeForMimeType(mimeType); 454 } 455 456 // if mimeType was not specified, compute file type based on file extension. 457 if (mFileType == 0) { 458 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 459 if (mediaFileType != null) { 460 mFileType = mediaFileType.fileType; 461 if (mMimeType == null) { 462 mMimeType = mediaFileType.mimeType; 463 } 464 } 465 } 466 467 if (isDrmEnabled() && MediaFile.isDrmFileType(mFileType)) { 468 mFileType = getFileTypeFromDrm(path); 469 } 470 } 471 472 FileEntry entry = makeEntryFor(path); 473 // add some slack to avoid a rounding error 474 long delta = (entry != null) ? (lastModified - entry.mLastModified) : 0; 475 boolean wasModified = delta > 1 || delta < -1; 476 if (entry == null || wasModified) { 477 if (wasModified) { 478 entry.mLastModified = lastModified; 479 } else { 480 entry = new FileEntry(0, path, lastModified, 481 (isDirectory ? MtpConstants.FORMAT_ASSOCIATION : 0)); 482 } 483 entry.mLastModifiedChanged = true; 484 } 485 486 if (mProcessPlaylists && MediaFile.isPlayListFileType(mFileType)) { 487 mPlayLists.add(entry); 488 // we don't process playlists in the main scan, so return null 489 return null; 490 } 491 492 // clear all the metadata 493 mArtist = null; 494 mAlbumArtist = null; 495 mAlbum = null; 496 mTitle = null; 497 mComposer = null; 498 mGenre = null; 499 mTrack = 0; 500 mYear = 0; 501 mDuration = 0; 502 mPath = path; 503 mLastModified = lastModified; 504 mWriter = null; 505 mCompilation = 0; 506 mIsDrm = false; 507 mWidth = 0; 508 mHeight = 0; 509 510 return entry; 511 } 512 513 @Override 514 public void scanFile(String path, long lastModified, long fileSize, 515 boolean isDirectory, boolean noMedia) { 516 // This is the callback funtion from native codes. 517 // Log.v(TAG, "scanFile: "+path); 518 doScanFile(path, null, lastModified, fileSize, isDirectory, false, noMedia); 519 } 520 521 public Uri doScanFile(String path, String mimeType, long lastModified, 522 long fileSize, boolean isDirectory, boolean scanAlways, boolean noMedia) { 523 Uri result = null; 524// long t1 = System.currentTimeMillis(); 525 try { 526 FileEntry entry = beginFile(path, mimeType, lastModified, 527 fileSize, isDirectory, noMedia); 528 529 // if this file was just inserted via mtp, set the rowid to zero 530 // (even though it already exists in the database), to trigger 531 // the correct code path for updating its entry 532 if (mMtpObjectHandle != 0) { 533 entry.mRowId = 0; 534 } 535 // rescan for metadata if file was modified since last scan 536 if (entry != null && (entry.mLastModifiedChanged || scanAlways)) { 537 if (noMedia) { 538 result = endFile(entry, false, false, false, false, false); 539 } else { 540 String lowpath = path.toLowerCase(); 541 boolean ringtones = (lowpath.indexOf(RINGTONES_DIR) > 0); 542 boolean notifications = (lowpath.indexOf(NOTIFICATIONS_DIR) > 0); 543 boolean alarms = (lowpath.indexOf(ALARMS_DIR) > 0); 544 boolean podcasts = (lowpath.indexOf(PODCAST_DIR) > 0); 545 boolean music = (lowpath.indexOf(MUSIC_DIR) > 0) || 546 (!ringtones && !notifications && !alarms && !podcasts); 547 548 boolean isaudio = MediaFile.isAudioFileType(mFileType); 549 boolean isvideo = MediaFile.isVideoFileType(mFileType); 550 boolean isimage = MediaFile.isImageFileType(mFileType); 551 552 if (isaudio || isvideo || isimage) { 553 if (mExternalIsEmulated && path.startsWith(mExternalStoragePath)) { 554 // try to rewrite the path to bypass the sd card fuse layer 555 String directPath = Environment.getMediaStorageDirectory() + 556 path.substring(mExternalStoragePath.length()); 557 File f = new File(directPath); 558 if (f.exists()) { 559 path = directPath; 560 } 561 } 562 } 563 564 // we only extract metadata for audio and video files 565 if (isaudio || isvideo) { 566 processFile(path, mimeType, this); 567 } 568 569 if (isimage) { 570 processImageFile(path); 571 } 572 573 result = endFile(entry, ringtones, notifications, alarms, music, podcasts); 574 } 575 } 576 } catch (RemoteException e) { 577 Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e); 578 } 579// long t2 = System.currentTimeMillis(); 580// Log.v(TAG, "scanFile: " + path + " took " + (t2-t1)); 581 return result; 582 } 583 584 private int parseSubstring(String s, int start, int defaultValue) { 585 int length = s.length(); 586 if (start == length) return defaultValue; 587 588 char ch = s.charAt(start++); 589 // return defaultValue if we have no integer at all 590 if (ch < '0' || ch > '9') return defaultValue; 591 592 int result = ch - '0'; 593 while (start < length) { 594 ch = s.charAt(start++); 595 if (ch < '0' || ch > '9') return result; 596 result = result * 10 + (ch - '0'); 597 } 598 599 return result; 600 } 601 602 public void handleStringTag(String name, String value) { 603 if (name.equalsIgnoreCase("title") || name.startsWith("title;")) { 604 // Don't trim() here, to preserve the special \001 character 605 // used to force sorting. The media provider will trim() before 606 // inserting the title in to the database. 607 mTitle = value; 608 } else if (name.equalsIgnoreCase("artist") || name.startsWith("artist;")) { 609 mArtist = value.trim(); 610 } else if (name.equalsIgnoreCase("albumartist") || name.startsWith("albumartist;") 611 || name.equalsIgnoreCase("band") || name.startsWith("band;")) { 612 mAlbumArtist = value.trim(); 613 } else if (name.equalsIgnoreCase("album") || name.startsWith("album;")) { 614 mAlbum = value.trim(); 615 } else if (name.equalsIgnoreCase("composer") || name.startsWith("composer;")) { 616 mComposer = value.trim(); 617 } else if (mProcessGenres && 618 (name.equalsIgnoreCase("genre") || name.startsWith("genre;"))) { 619 mGenre = getGenreName(value); 620 } else if (name.equalsIgnoreCase("year") || name.startsWith("year;")) { 621 mYear = parseSubstring(value, 0, 0); 622 } else if (name.equalsIgnoreCase("tracknumber") || name.startsWith("tracknumber;")) { 623 // track number might be of the form "2/12" 624 // we just read the number before the slash 625 int num = parseSubstring(value, 0, 0); 626 mTrack = (mTrack / 1000) * 1000 + num; 627 } else if (name.equalsIgnoreCase("discnumber") || 628 name.equals("set") || name.startsWith("set;")) { 629 // set number might be of the form "1/3" 630 // we just read the number before the slash 631 int num = parseSubstring(value, 0, 0); 632 mTrack = (num * 1000) + (mTrack % 1000); 633 } else if (name.equalsIgnoreCase("duration")) { 634 mDuration = parseSubstring(value, 0, 0); 635 } else if (name.equalsIgnoreCase("writer") || name.startsWith("writer;")) { 636 mWriter = value.trim(); 637 } else if (name.equalsIgnoreCase("compilation")) { 638 mCompilation = parseSubstring(value, 0, 0); 639 } else if (name.equalsIgnoreCase("isdrm")) { 640 mIsDrm = (parseSubstring(value, 0, 0) == 1); 641 } else if (name.equalsIgnoreCase("width")) { 642 mWidth = parseSubstring(value, 0, 0); 643 } else if (name.equalsIgnoreCase("height")) { 644 mHeight = parseSubstring(value, 0, 0); 645 } else { 646 //Log.v(TAG, "unknown tag: " + name + " (" + mProcessGenres + ")"); 647 } 648 } 649 650 private boolean convertGenreCode(String input, String expected) { 651 String output = getGenreName(input); 652 if (output.equals(expected)) { 653 return true; 654 } else { 655 Log.d(TAG, "'" + input + "' -> '" + output + "', expected '" + expected + "'"); 656 return false; 657 } 658 } 659 private void testGenreNameConverter() { 660 convertGenreCode("2", "Country"); 661 convertGenreCode("(2)", "Country"); 662 convertGenreCode("(2", "(2"); 663 convertGenreCode("2 Foo", "Country"); 664 convertGenreCode("(2) Foo", "Country"); 665 convertGenreCode("(2 Foo", "(2 Foo"); 666 convertGenreCode("2Foo", "2Foo"); 667 convertGenreCode("(2)Foo", "Country"); 668 convertGenreCode("200 Foo", "Foo"); 669 convertGenreCode("(200) Foo", "Foo"); 670 convertGenreCode("200Foo", "200Foo"); 671 convertGenreCode("(200)Foo", "Foo"); 672 convertGenreCode("200)Foo", "200)Foo"); 673 convertGenreCode("200) Foo", "200) Foo"); 674 } 675 676 public String getGenreName(String genreTagValue) { 677 678 if (genreTagValue == null) { 679 return null; 680 } 681 final int length = genreTagValue.length(); 682 683 if (length > 0) { 684 boolean parenthesized = false; 685 StringBuffer number = new StringBuffer(); 686 int i = 0; 687 for (; i < length; ++i) { 688 char c = genreTagValue.charAt(i); 689 if (i == 0 && c == '(') { 690 parenthesized = true; 691 } else if (Character.isDigit(c)) { 692 number.append(c); 693 } else { 694 break; 695 } 696 } 697 char charAfterNumber = i < length ? genreTagValue.charAt(i) : ' '; 698 if ((parenthesized && charAfterNumber == ')') 699 || !parenthesized && Character.isWhitespace(charAfterNumber)) { 700 try { 701 short genreIndex = Short.parseShort(number.toString()); 702 if (genreIndex >= 0) { 703 if (genreIndex < ID3_GENRES.length) { 704 return ID3_GENRES[genreIndex]; 705 } else if (genreIndex == 0xFF) { 706 return null; 707 } else if (genreIndex < 0xFF && (i + 1) < length) { 708 // genre is valid but unknown, 709 // if there is a string after the value we take it 710 if (parenthesized && charAfterNumber == ')') { 711 i++; 712 } 713 String ret = genreTagValue.substring(i).trim(); 714 if (ret.length() != 0) { 715 return ret; 716 } 717 } else { 718 // else return the number, without parentheses 719 return number.toString(); 720 } 721 } 722 } catch (NumberFormatException e) { 723 } 724 } 725 } 726 727 return genreTagValue; 728 } 729 730 private void processImageFile(String path) { 731 try { 732 mBitmapOptions.outWidth = 0; 733 mBitmapOptions.outHeight = 0; 734 BitmapFactory.decodeFile(path, mBitmapOptions); 735 mWidth = mBitmapOptions.outWidth; 736 mHeight = mBitmapOptions.outHeight; 737 } catch (Throwable th) { 738 // ignore; 739 } 740 } 741 742 public void setMimeType(String mimeType) { 743 if ("audio/mp4".equals(mMimeType) && 744 mimeType.startsWith("video")) { 745 // for feature parity with Donut, we force m4a files to keep the 746 // audio/mp4 mimetype, even if they are really "enhanced podcasts" 747 // with a video track 748 return; 749 } 750 mMimeType = mimeType; 751 mFileType = MediaFile.getFileTypeForMimeType(mimeType); 752 } 753 754 /** 755 * Formats the data into a values array suitable for use with the Media 756 * Content Provider. 757 * 758 * @return a map of values 759 */ 760 private ContentValues toValues() { 761 ContentValues map = new ContentValues(); 762 763 map.put(MediaStore.MediaColumns.DATA, mPath); 764 map.put(MediaStore.MediaColumns.TITLE, mTitle); 765 map.put(MediaStore.MediaColumns.DATE_MODIFIED, mLastModified); 766 map.put(MediaStore.MediaColumns.SIZE, mFileSize); 767 map.put(MediaStore.MediaColumns.MIME_TYPE, mMimeType); 768 map.put(MediaStore.MediaColumns.IS_DRM, mIsDrm); 769 770 String resolution = null; 771 if (mWidth > 0 && mHeight > 0) { 772 map.put(MediaStore.MediaColumns.WIDTH, mWidth); 773 map.put(MediaStore.MediaColumns.HEIGHT, mHeight); 774 resolution = mWidth + "x" + mHeight; 775 } 776 777 if (!mNoMedia) { 778 if (MediaFile.isVideoFileType(mFileType)) { 779 map.put(Video.Media.ARTIST, (mArtist != null && mArtist.length() > 0 780 ? mArtist : MediaStore.UNKNOWN_STRING)); 781 map.put(Video.Media.ALBUM, (mAlbum != null && mAlbum.length() > 0 782 ? mAlbum : MediaStore.UNKNOWN_STRING)); 783 map.put(Video.Media.DURATION, mDuration); 784 if (resolution != null) { 785 map.put(Video.Media.RESOLUTION, resolution); 786 } 787 } else if (MediaFile.isImageFileType(mFileType)) { 788 // FIXME - add DESCRIPTION 789 } else if (MediaFile.isAudioFileType(mFileType)) { 790 map.put(Audio.Media.ARTIST, (mArtist != null && mArtist.length() > 0) ? 791 mArtist : MediaStore.UNKNOWN_STRING); 792 map.put(Audio.Media.ALBUM_ARTIST, (mAlbumArtist != null && 793 mAlbumArtist.length() > 0) ? mAlbumArtist : null); 794 map.put(Audio.Media.ALBUM, (mAlbum != null && mAlbum.length() > 0) ? 795 mAlbum : MediaStore.UNKNOWN_STRING); 796 map.put(Audio.Media.COMPOSER, mComposer); 797 map.put(Audio.Media.GENRE, mGenre); 798 if (mYear != 0) { 799 map.put(Audio.Media.YEAR, mYear); 800 } 801 map.put(Audio.Media.TRACK, mTrack); 802 map.put(Audio.Media.DURATION, mDuration); 803 map.put(Audio.Media.COMPILATION, mCompilation); 804 } 805 } 806 return map; 807 } 808 809 private Uri endFile(FileEntry entry, boolean ringtones, boolean notifications, 810 boolean alarms, boolean music, boolean podcasts) 811 throws RemoteException { 812 // update database 813 814 // use album artist if artist is missing 815 if (mArtist == null || mArtist.length() == 0) { 816 mArtist = mAlbumArtist; 817 } 818 819 ContentValues values = toValues(); 820 String title = values.getAsString(MediaStore.MediaColumns.TITLE); 821 if (title == null || TextUtils.isEmpty(title.trim())) { 822 title = MediaFile.getFileTitle(values.getAsString(MediaStore.MediaColumns.DATA)); 823 values.put(MediaStore.MediaColumns.TITLE, title); 824 } 825 String album = values.getAsString(Audio.Media.ALBUM); 826 if (MediaStore.UNKNOWN_STRING.equals(album)) { 827 album = values.getAsString(MediaStore.MediaColumns.DATA); 828 // extract last path segment before file name 829 int lastSlash = album.lastIndexOf('/'); 830 if (lastSlash >= 0) { 831 int previousSlash = 0; 832 while (true) { 833 int idx = album.indexOf('/', previousSlash + 1); 834 if (idx < 0 || idx >= lastSlash) { 835 break; 836 } 837 previousSlash = idx; 838 } 839 if (previousSlash != 0) { 840 album = album.substring(previousSlash + 1, lastSlash); 841 values.put(Audio.Media.ALBUM, album); 842 } 843 } 844 } 845 long rowId = entry.mRowId; 846 if (MediaFile.isAudioFileType(mFileType) && (rowId == 0 || mMtpObjectHandle != 0)) { 847 // Only set these for new entries. For existing entries, they 848 // may have been modified later, and we want to keep the current 849 // values so that custom ringtones still show up in the ringtone 850 // picker. 851 values.put(Audio.Media.IS_RINGTONE, ringtones); 852 values.put(Audio.Media.IS_NOTIFICATION, notifications); 853 values.put(Audio.Media.IS_ALARM, alarms); 854 values.put(Audio.Media.IS_MUSIC, music); 855 values.put(Audio.Media.IS_PODCAST, podcasts); 856 } else if (mFileType == MediaFile.FILE_TYPE_JPEG && !mNoMedia) { 857 ExifInterface exif = null; 858 try { 859 exif = new ExifInterface(entry.mPath); 860 } catch (IOException ex) { 861 // exif is null 862 } 863 if (exif != null) { 864 float[] latlng = new float[2]; 865 if (exif.getLatLong(latlng)) { 866 values.put(Images.Media.LATITUDE, latlng[0]); 867 values.put(Images.Media.LONGITUDE, latlng[1]); 868 } 869 870 long time = exif.getGpsDateTime(); 871 if (time != -1) { 872 values.put(Images.Media.DATE_TAKEN, time); 873 } else { 874 // If no time zone information is available, we should consider using 875 // EXIF local time as taken time if the difference between file time 876 // and EXIF local time is not less than 1 Day, otherwise MediaProvider 877 // will use file time as taken time. 878 time = exif.getDateTime(); 879 if (time != -1 && Math.abs(mLastModified * 1000 - time) >= 86400000) { 880 values.put(Images.Media.DATE_TAKEN, time); 881 } 882 } 883 884 int orientation = exif.getAttributeInt( 885 ExifInterface.TAG_ORIENTATION, -1); 886 if (orientation != -1) { 887 // We only recognize a subset of orientation tag values. 888 int degree; 889 switch(orientation) { 890 case ExifInterface.ORIENTATION_ROTATE_90: 891 degree = 90; 892 break; 893 case ExifInterface.ORIENTATION_ROTATE_180: 894 degree = 180; 895 break; 896 case ExifInterface.ORIENTATION_ROTATE_270: 897 degree = 270; 898 break; 899 default: 900 degree = 0; 901 break; 902 } 903 values.put(Images.Media.ORIENTATION, degree); 904 } 905 } 906 } 907 908 Uri tableUri = mFilesUri; 909 MediaInserter inserter = mMediaInserter; 910 if (!mNoMedia) { 911 if (MediaFile.isVideoFileType(mFileType)) { 912 tableUri = mVideoUri; 913 } else if (MediaFile.isImageFileType(mFileType)) { 914 tableUri = mImagesUri; 915 } else if (MediaFile.isAudioFileType(mFileType)) { 916 tableUri = mAudioUri; 917 } 918 } 919 Uri result = null; 920 boolean needToSetSettings = false; 921 if (rowId == 0) { 922 if (mMtpObjectHandle != 0) { 923 values.put(MediaStore.MediaColumns.MEDIA_SCANNER_NEW_OBJECT_ID, mMtpObjectHandle); 924 } 925 if (tableUri == mFilesUri) { 926 int format = entry.mFormat; 927 if (format == 0) { 928 format = MediaFile.getFormatCode(entry.mPath, mMimeType); 929 } 930 values.put(Files.FileColumns.FORMAT, format); 931 } 932 // Setting a flag in order not to use bulk insert for the file related with 933 // notifications, ringtones, and alarms, because the rowId of the inserted file is 934 // needed. 935 if (mWasEmptyPriorToScan) { 936 if (notifications && !mDefaultNotificationSet) { 937 if (TextUtils.isEmpty(mDefaultNotificationFilename) || 938 doesPathHaveFilename(entry.mPath, mDefaultNotificationFilename)) { 939 needToSetSettings = true; 940 } 941 } else if (ringtones && !mDefaultRingtoneSet) { 942 if (TextUtils.isEmpty(mDefaultRingtoneFilename) || 943 doesPathHaveFilename(entry.mPath, mDefaultRingtoneFilename)) { 944 needToSetSettings = true; 945 } 946 } else if (alarms && !mDefaultAlarmSet) { 947 if (TextUtils.isEmpty(mDefaultAlarmAlertFilename) || 948 doesPathHaveFilename(entry.mPath, mDefaultAlarmAlertFilename)) { 949 needToSetSettings = true; 950 } 951 } 952 } 953 954 // New file, insert it. 955 // Directories need to be inserted before the files they contain, so they 956 // get priority when bulk inserting. 957 // If the rowId of the inserted file is needed, it gets inserted immediately, 958 // bypassing the bulk inserter. 959 if (inserter == null || needToSetSettings) { 960 result = mMediaProvider.insert(tableUri, values); 961 } else if (entry.mFormat == MtpConstants.FORMAT_ASSOCIATION) { 962 inserter.insertwithPriority(tableUri, values); 963 } else { 964 inserter.insert(tableUri, values); 965 } 966 967 if (result != null) { 968 rowId = ContentUris.parseId(result); 969 entry.mRowId = rowId; 970 } 971 } else { 972 // updated file 973 result = ContentUris.withAppendedId(tableUri, rowId); 974 // path should never change, and we want to avoid replacing mixed cased paths 975 // with squashed lower case paths 976 values.remove(MediaStore.MediaColumns.DATA); 977 978 int mediaType = 0; 979 if (!MediaScanner.isNoMediaPath(entry.mPath)) { 980 int fileType = MediaFile.getFileTypeForMimeType(mMimeType); 981 if (MediaFile.isAudioFileType(fileType)) { 982 mediaType = FileColumns.MEDIA_TYPE_AUDIO; 983 } else if (MediaFile.isVideoFileType(fileType)) { 984 mediaType = FileColumns.MEDIA_TYPE_VIDEO; 985 } else if (MediaFile.isImageFileType(fileType)) { 986 mediaType = FileColumns.MEDIA_TYPE_IMAGE; 987 } else if (MediaFile.isPlayListFileType(fileType)) { 988 mediaType = FileColumns.MEDIA_TYPE_PLAYLIST; 989 } 990 values.put(FileColumns.MEDIA_TYPE, mediaType); 991 } 992 mMediaProvider.update(result, values, null, null); 993 } 994 995 if(needToSetSettings) { 996 if (notifications) { 997 setSettingIfNotSet(Settings.System.NOTIFICATION_SOUND, tableUri, rowId); 998 mDefaultNotificationSet = true; 999 } else if (ringtones) { 1000 setSettingIfNotSet(Settings.System.RINGTONE, tableUri, rowId); 1001 mDefaultRingtoneSet = true; 1002 } else if (alarms) { 1003 setSettingIfNotSet(Settings.System.ALARM_ALERT, tableUri, rowId); 1004 mDefaultAlarmSet = true; 1005 } 1006 } 1007 1008 return result; 1009 } 1010 1011 private boolean doesPathHaveFilename(String path, String filename) { 1012 int pathFilenameStart = path.lastIndexOf(File.separatorChar) + 1; 1013 int filenameLength = filename.length(); 1014 return path.regionMatches(pathFilenameStart, filename, 0, filenameLength) && 1015 pathFilenameStart + filenameLength == path.length(); 1016 } 1017 1018 private void setSettingIfNotSet(String settingName, Uri uri, long rowId) { 1019 1020 String existingSettingValue = Settings.System.getString(mContext.getContentResolver(), 1021 settingName); 1022 1023 if (TextUtils.isEmpty(existingSettingValue)) { 1024 // Set the setting to the given URI 1025 Settings.System.putString(mContext.getContentResolver(), settingName, 1026 ContentUris.withAppendedId(uri, rowId).toString()); 1027 } 1028 } 1029 1030 private int getFileTypeFromDrm(String path) { 1031 if (!isDrmEnabled()) { 1032 return 0; 1033 } 1034 1035 int resultFileType = 0; 1036 1037 if (mDrmManagerClient == null) { 1038 mDrmManagerClient = new DrmManagerClient(mContext); 1039 } 1040 1041 if (mDrmManagerClient.canHandle(path, null)) { 1042 String drmMimetype = mDrmManagerClient.getOriginalMimeType(path); 1043 if (drmMimetype != null) { 1044 mMimeType = drmMimetype; 1045 resultFileType = MediaFile.getFileTypeForMimeType(drmMimetype); 1046 } 1047 } 1048 return resultFileType; 1049 } 1050 1051 }; // end of anonymous MediaScannerClient instance 1052 1053 private void prescan(String filePath, boolean prescanFiles) throws RemoteException { 1054 Cursor c = null; 1055 String where = null; 1056 String[] selectionArgs = null; 1057 1058 if (mPlayLists == null) { 1059 mPlayLists = new ArrayList<FileEntry>(); 1060 } else { 1061 mPlayLists.clear(); 1062 } 1063 1064 if (filePath != null) { 1065 // query for only one file 1066 where = MediaStore.Files.FileColumns._ID + ">?" + 1067 " AND " + Files.FileColumns.DATA + "=?"; 1068 selectionArgs = new String[] { "", filePath }; 1069 } else { 1070 where = MediaStore.Files.FileColumns._ID + ">?"; 1071 selectionArgs = new String[] { "" }; 1072 } 1073 1074 // Tell the provider to not delete the file. 1075 // If the file is truly gone the delete is unnecessary, and we want to avoid 1076 // accidentally deleting files that are really there (this may happen if the 1077 // filesystem is mounted and unmounted while the scanner is running). 1078 Uri.Builder builder = mFilesUri.buildUpon(); 1079 builder.appendQueryParameter(MediaStore.PARAM_DELETE_DATA, "false"); 1080 MediaBulkDeleter deleter = new MediaBulkDeleter(mMediaProvider, builder.build()); 1081 1082 // Build the list of files from the content provider 1083 try { 1084 if (prescanFiles) { 1085 // First read existing files from the files table. 1086 // Because we'll be deleting entries for missing files as we go, 1087 // we need to query the database in small batches, to avoid problems 1088 // with CursorWindow positioning. 1089 long lastId = Long.MIN_VALUE; 1090 Uri limitUri = mFilesUri.buildUpon().appendQueryParameter("limit", "1000").build(); 1091 mWasEmptyPriorToScan = true; 1092 1093 while (true) { 1094 selectionArgs[0] = "" + lastId; 1095 if (c != null) { 1096 c.close(); 1097 c = null; 1098 } 1099 c = mMediaProvider.query(limitUri, FILES_PRESCAN_PROJECTION, 1100 where, selectionArgs, MediaStore.Files.FileColumns._ID, null); 1101 if (c == null) { 1102 break; 1103 } 1104 1105 int num = c.getCount(); 1106 1107 if (num == 0) { 1108 break; 1109 } 1110 mWasEmptyPriorToScan = false; 1111 while (c.moveToNext()) { 1112 long rowId = c.getLong(FILES_PRESCAN_ID_COLUMN_INDEX); 1113 String path = c.getString(FILES_PRESCAN_PATH_COLUMN_INDEX); 1114 int format = c.getInt(FILES_PRESCAN_FORMAT_COLUMN_INDEX); 1115 long lastModified = c.getLong(FILES_PRESCAN_DATE_MODIFIED_COLUMN_INDEX); 1116 lastId = rowId; 1117 1118 // Only consider entries with absolute path names. 1119 // This allows storing URIs in the database without the 1120 // media scanner removing them. 1121 if (path != null && path.startsWith("/")) { 1122 boolean exists = false; 1123 try { 1124 exists = Libcore.os.access(path, libcore.io.OsConstants.F_OK); 1125 } catch (ErrnoException e1) { 1126 } 1127 if (!exists && !MtpConstants.isAbstractObject(format)) { 1128 // do not delete missing playlists, since they may have been 1129 // modified by the user. 1130 // The user can delete them in the media player instead. 1131 // instead, clear the path and lastModified fields in the row 1132 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 1133 int fileType = (mediaFileType == null ? 0 : mediaFileType.fileType); 1134 1135 if (!MediaFile.isPlayListFileType(fileType)) { 1136 deleter.delete(rowId); 1137 if (path.toLowerCase(Locale.US).endsWith("/.nomedia")) { 1138 deleter.flush(); 1139 String parent = new File(path).getParent(); 1140 mMediaProvider.call(MediaStore.UNHIDE_CALL, parent, null); 1141 } 1142 } 1143 } 1144 } 1145 } 1146 } 1147 } 1148 } 1149 finally { 1150 if (c != null) { 1151 c.close(); 1152 } 1153 deleter.flush(); 1154 } 1155 1156 // compute original size of images 1157 mOriginalCount = 0; 1158 c = mMediaProvider.query(mImagesUri, ID_PROJECTION, null, null, null, null); 1159 if (c != null) { 1160 mOriginalCount = c.getCount(); 1161 c.close(); 1162 } 1163 } 1164 1165 private boolean inScanDirectory(String path, String[] directories) { 1166 for (int i = 0; i < directories.length; i++) { 1167 String directory = directories[i]; 1168 if (path.startsWith(directory)) { 1169 return true; 1170 } 1171 } 1172 return false; 1173 } 1174 1175 private void pruneDeadThumbnailFiles() { 1176 HashSet<String> existingFiles = new HashSet<String>(); 1177 String directory = "/sdcard/DCIM/.thumbnails"; 1178 String [] files = (new File(directory)).list(); 1179 if (files == null) 1180 files = new String[0]; 1181 1182 for (int i = 0; i < files.length; i++) { 1183 String fullPathString = directory + "/" + files[i]; 1184 existingFiles.add(fullPathString); 1185 } 1186 1187 try { 1188 Cursor c = mMediaProvider.query( 1189 mThumbsUri, 1190 new String [] { "_data" }, 1191 null, 1192 null, 1193 null, null); 1194 Log.v(TAG, "pruneDeadThumbnailFiles... " + c); 1195 if (c != null && c.moveToFirst()) { 1196 do { 1197 String fullPathString = c.getString(0); 1198 existingFiles.remove(fullPathString); 1199 } while (c.moveToNext()); 1200 } 1201 1202 for (String fileToDelete : existingFiles) { 1203 if (false) 1204 Log.v(TAG, "fileToDelete is " + fileToDelete); 1205 try { 1206 (new File(fileToDelete)).delete(); 1207 } catch (SecurityException ex) { 1208 } 1209 } 1210 1211 Log.v(TAG, "/pruneDeadThumbnailFiles... " + c); 1212 if (c != null) { 1213 c.close(); 1214 } 1215 } catch (RemoteException e) { 1216 // We will soon be killed... 1217 } 1218 } 1219 1220 static class MediaBulkDeleter { 1221 StringBuilder whereClause = new StringBuilder(); 1222 ArrayList<String> whereArgs = new ArrayList<String>(100); 1223 IContentProvider mProvider; 1224 Uri mBaseUri; 1225 1226 public MediaBulkDeleter(IContentProvider provider, Uri baseUri) { 1227 mProvider = provider; 1228 mBaseUri = baseUri; 1229 } 1230 1231 public void delete(long id) throws RemoteException { 1232 if (whereClause.length() != 0) { 1233 whereClause.append(","); 1234 } 1235 whereClause.append("?"); 1236 whereArgs.add("" + id); 1237 if (whereArgs.size() > 100) { 1238 flush(); 1239 } 1240 } 1241 public void flush() throws RemoteException { 1242 int size = whereArgs.size(); 1243 if (size > 0) { 1244 String [] foo = new String [size]; 1245 foo = whereArgs.toArray(foo); 1246 int numrows = mProvider.delete(mBaseUri, MediaStore.MediaColumns._ID + " IN (" + 1247 whereClause.toString() + ")", foo); 1248 //Log.i("@@@@@@@@@", "rows deleted: " + numrows); 1249 whereClause.setLength(0); 1250 whereArgs.clear(); 1251 } 1252 } 1253 } 1254 1255 private void postscan(String[] directories) throws RemoteException { 1256 1257 // handle playlists last, after we know what media files are on the storage. 1258 if (mProcessPlaylists) { 1259 processPlayLists(); 1260 } 1261 1262 if (mOriginalCount == 0 && mImagesUri.equals(Images.Media.getContentUri("external"))) 1263 pruneDeadThumbnailFiles(); 1264 1265 // allow GC to clean up 1266 mPlayLists = null; 1267 mMediaProvider = null; 1268 } 1269 1270 private void initialize(String volumeName) { 1271 mMediaProvider = mContext.getContentResolver().acquireProvider("media"); 1272 1273 mAudioUri = Audio.Media.getContentUri(volumeName); 1274 mVideoUri = Video.Media.getContentUri(volumeName); 1275 mImagesUri = Images.Media.getContentUri(volumeName); 1276 mThumbsUri = Images.Thumbnails.getContentUri(volumeName); 1277 mFilesUri = Files.getContentUri(volumeName); 1278 1279 if (!volumeName.equals("internal")) { 1280 // we only support playlists on external media 1281 mProcessPlaylists = true; 1282 mProcessGenres = true; 1283 mPlaylistsUri = Playlists.getContentUri(volumeName); 1284 1285 mCaseInsensitivePaths = true; 1286 } 1287 } 1288 1289 public void scanDirectories(String[] directories, String volumeName) { 1290 try { 1291 long start = System.currentTimeMillis(); 1292 initialize(volumeName); 1293 prescan(null, true); 1294 long prescan = System.currentTimeMillis(); 1295 1296 if (ENABLE_BULK_INSERTS) { 1297 // create MediaInserter for bulk inserts 1298 mMediaInserter = new MediaInserter(mMediaProvider, 500); 1299 } 1300 1301 for (int i = 0; i < directories.length; i++) { 1302 processDirectory(directories[i], mClient); 1303 } 1304 1305 if (ENABLE_BULK_INSERTS) { 1306 // flush remaining inserts 1307 mMediaInserter.flushAll(); 1308 mMediaInserter = null; 1309 } 1310 1311 long scan = System.currentTimeMillis(); 1312 postscan(directories); 1313 long end = System.currentTimeMillis(); 1314 1315 if (false) { 1316 Log.d(TAG, " prescan time: " + (prescan - start) + "ms\n"); 1317 Log.d(TAG, " scan time: " + (scan - prescan) + "ms\n"); 1318 Log.d(TAG, "postscan time: " + (end - scan) + "ms\n"); 1319 Log.d(TAG, " total time: " + (end - start) + "ms\n"); 1320 } 1321 } catch (SQLException e) { 1322 // this might happen if the SD card is removed while the media scanner is running 1323 Log.e(TAG, "SQLException in MediaScanner.scan()", e); 1324 } catch (UnsupportedOperationException e) { 1325 // this might happen if the SD card is removed while the media scanner is running 1326 Log.e(TAG, "UnsupportedOperationException in MediaScanner.scan()", e); 1327 } catch (RemoteException e) { 1328 Log.e(TAG, "RemoteException in MediaScanner.scan()", e); 1329 } 1330 } 1331 1332 // this function is used to scan a single file 1333 public Uri scanSingleFile(String path, String volumeName, String mimeType) { 1334 try { 1335 initialize(volumeName); 1336 prescan(path, true); 1337 1338 File file = new File(path); 1339 if (!file.exists()) { 1340 return null; 1341 } 1342 1343 // lastModified is in milliseconds on Files. 1344 long lastModifiedSeconds = file.lastModified() / 1000; 1345 1346 // always scan the file, so we can return the content://media Uri for existing files 1347 return mClient.doScanFile(path, mimeType, lastModifiedSeconds, file.length(), 1348 false, true, false); 1349 } catch (RemoteException e) { 1350 Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e); 1351 return null; 1352 } 1353 } 1354 1355 private static boolean isNoMediaFile(String path) { 1356 File file = new File(path); 1357 if (file.isDirectory()) return false; 1358 1359 // special case certain file names 1360 // I use regionMatches() instead of substring() below 1361 // to avoid memory allocation 1362 int lastSlash = path.lastIndexOf('/'); 1363 if (lastSlash >= 0 && lastSlash + 2 < path.length()) { 1364 // ignore those ._* files created by MacOS 1365 if (path.regionMatches(lastSlash + 1, "._", 0, 2)) { 1366 return true; 1367 } 1368 1369 // ignore album art files created by Windows Media Player: 1370 // Folder.jpg, AlbumArtSmall.jpg, AlbumArt_{...}_Large.jpg 1371 // and AlbumArt_{...}_Small.jpg 1372 if (path.regionMatches(true, path.length() - 4, ".jpg", 0, 4)) { 1373 if (path.regionMatches(true, lastSlash + 1, "AlbumArt_{", 0, 10) || 1374 path.regionMatches(true, lastSlash + 1, "AlbumArt.", 0, 9)) { 1375 return true; 1376 } 1377 int length = path.length() - lastSlash - 1; 1378 if ((length == 17 && path.regionMatches( 1379 true, lastSlash + 1, "AlbumArtSmall", 0, 13)) || 1380 (length == 10 1381 && path.regionMatches(true, lastSlash + 1, "Folder", 0, 6))) { 1382 return true; 1383 } 1384 } 1385 } 1386 return false; 1387 } 1388 1389 public static boolean isNoMediaPath(String path) { 1390 if (path == null) return false; 1391 1392 // return true if file or any parent directory has name starting with a dot 1393 if (path.indexOf("/.") >= 0) return true; 1394 1395 // now check to see if any parent directories have a ".nomedia" file 1396 // start from 1 so we don't bother checking in the root directory 1397 int offset = 1; 1398 while (offset >= 0) { 1399 int slashIndex = path.indexOf('/', offset); 1400 if (slashIndex > offset) { 1401 slashIndex++; // move past slash 1402 File file = new File(path.substring(0, slashIndex) + ".nomedia"); 1403 if (file.exists()) { 1404 // we have a .nomedia in one of the parent directories 1405 return true; 1406 } 1407 } 1408 offset = slashIndex; 1409 } 1410 return isNoMediaFile(path); 1411 } 1412 1413 public void scanMtpFile(String path, String volumeName, int objectHandle, int format) { 1414 initialize(volumeName); 1415 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 1416 int fileType = (mediaFileType == null ? 0 : mediaFileType.fileType); 1417 File file = new File(path); 1418 long lastModifiedSeconds = file.lastModified() / 1000; 1419 1420 if (!MediaFile.isAudioFileType(fileType) && !MediaFile.isVideoFileType(fileType) && 1421 !MediaFile.isImageFileType(fileType) && !MediaFile.isPlayListFileType(fileType) && 1422 !MediaFile.isDrmFileType(fileType)) { 1423 1424 // no need to use the media scanner, but we need to update last modified and file size 1425 ContentValues values = new ContentValues(); 1426 values.put(Files.FileColumns.SIZE, file.length()); 1427 values.put(Files.FileColumns.DATE_MODIFIED, lastModifiedSeconds); 1428 try { 1429 String[] whereArgs = new String[] { Integer.toString(objectHandle) }; 1430 mMediaProvider.update(Files.getMtpObjectsUri(volumeName), values, "_id=?", 1431 whereArgs); 1432 } catch (RemoteException e) { 1433 Log.e(TAG, "RemoteException in scanMtpFile", e); 1434 } 1435 return; 1436 } 1437 1438 mMtpObjectHandle = objectHandle; 1439 Cursor fileList = null; 1440 try { 1441 if (MediaFile.isPlayListFileType(fileType)) { 1442 // build file cache so we can look up tracks in the playlist 1443 prescan(null, true); 1444 1445 FileEntry entry = makeEntryFor(path); 1446 if (entry != null) { 1447 fileList = mMediaProvider.query(mFilesUri, FILES_PRESCAN_PROJECTION, 1448 null, null, null, null); 1449 processPlayList(entry, fileList); 1450 } 1451 } else { 1452 // MTP will create a file entry for us so we don't want to do it in prescan 1453 prescan(path, false); 1454 1455 // always scan the file, so we can return the content://media Uri for existing files 1456 mClient.doScanFile(path, mediaFileType.mimeType, lastModifiedSeconds, file.length(), 1457 (format == MtpConstants.FORMAT_ASSOCIATION), true, isNoMediaPath(path)); 1458 } 1459 } catch (RemoteException e) { 1460 Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e); 1461 } finally { 1462 mMtpObjectHandle = 0; 1463 if (fileList != null) { 1464 fileList.close(); 1465 } 1466 } 1467 } 1468 1469 FileEntry makeEntryFor(String path) { 1470 String where; 1471 String[] selectionArgs; 1472 1473 Cursor c = null; 1474 try { 1475 where = Files.FileColumns.DATA + "=?"; 1476 selectionArgs = new String[] { path }; 1477 c = mMediaProvider.query(mFilesUri, FILES_PRESCAN_PROJECTION, 1478 where, selectionArgs, null, null); 1479 if (c.moveToFirst()) { 1480 long rowId = c.getLong(FILES_PRESCAN_ID_COLUMN_INDEX); 1481 int format = c.getInt(FILES_PRESCAN_FORMAT_COLUMN_INDEX); 1482 long lastModified = c.getLong(FILES_PRESCAN_DATE_MODIFIED_COLUMN_INDEX); 1483 return new FileEntry(rowId, path, lastModified, format); 1484 } 1485 } catch (RemoteException e) { 1486 } finally { 1487 if (c != null) { 1488 c.close(); 1489 } 1490 } 1491 return null; 1492 } 1493 1494 // returns the number of matching file/directory names, starting from the right 1495 private int matchPaths(String path1, String path2) { 1496 int result = 0; 1497 int end1 = path1.length(); 1498 int end2 = path2.length(); 1499 1500 while (end1 > 0 && end2 > 0) { 1501 int slash1 = path1.lastIndexOf('/', end1 - 1); 1502 int slash2 = path2.lastIndexOf('/', end2 - 1); 1503 int backSlash1 = path1.lastIndexOf('\\', end1 - 1); 1504 int backSlash2 = path2.lastIndexOf('\\', end2 - 1); 1505 int start1 = (slash1 > backSlash1 ? slash1 : backSlash1); 1506 int start2 = (slash2 > backSlash2 ? slash2 : backSlash2); 1507 if (start1 < 0) start1 = 0; else start1++; 1508 if (start2 < 0) start2 = 0; else start2++; 1509 int length = end1 - start1; 1510 if (end2 - start2 != length) break; 1511 if (path1.regionMatches(true, start1, path2, start2, length)) { 1512 result++; 1513 end1 = start1 - 1; 1514 end2 = start2 - 1; 1515 } else break; 1516 } 1517 1518 return result; 1519 } 1520 1521 private boolean matchEntries(long rowId, String data) { 1522 1523 int len = mPlaylistEntries.size(); 1524 boolean done = true; 1525 for (int i = 0; i < len; i++) { 1526 PlaylistEntry entry = mPlaylistEntries.get(i); 1527 if (entry.bestmatchlevel == Integer.MAX_VALUE) { 1528 continue; // this entry has been matched already 1529 } 1530 done = false; 1531 if (data.equalsIgnoreCase(entry.path)) { 1532 entry.bestmatchid = rowId; 1533 entry.bestmatchlevel = Integer.MAX_VALUE; 1534 continue; // no need for path matching 1535 } 1536 1537 int matchLength = matchPaths(data, entry.path); 1538 if (matchLength > entry.bestmatchlevel) { 1539 entry.bestmatchid = rowId; 1540 entry.bestmatchlevel = matchLength; 1541 } 1542 } 1543 return done; 1544 } 1545 1546 private void cachePlaylistEntry(String line, String playListDirectory) { 1547 PlaylistEntry entry = new PlaylistEntry(); 1548 // watch for trailing whitespace 1549 int entryLength = line.length(); 1550 while (entryLength > 0 && Character.isWhitespace(line.charAt(entryLength - 1))) entryLength--; 1551 // path should be longer than 3 characters. 1552 // avoid index out of bounds errors below by returning here. 1553 if (entryLength < 3) return; 1554 if (entryLength < line.length()) line = line.substring(0, entryLength); 1555 1556 // does entry appear to be an absolute path? 1557 // look for Unix or DOS absolute paths 1558 char ch1 = line.charAt(0); 1559 boolean fullPath = (ch1 == '/' || 1560 (Character.isLetter(ch1) && line.charAt(1) == ':' && line.charAt(2) == '\\')); 1561 // if we have a relative path, combine entry with playListDirectory 1562 if (!fullPath) 1563 line = playListDirectory + line; 1564 entry.path = line; 1565 //FIXME - should we look for "../" within the path? 1566 1567 mPlaylistEntries.add(entry); 1568 } 1569 1570 private void processCachedPlaylist(Cursor fileList, ContentValues values, Uri playlistUri) { 1571 fileList.moveToPosition(-1); 1572 while (fileList.moveToNext()) { 1573 long rowId = fileList.getLong(FILES_PRESCAN_ID_COLUMN_INDEX); 1574 String data = fileList.getString(FILES_PRESCAN_PATH_COLUMN_INDEX); 1575 if (matchEntries(rowId, data)) { 1576 break; 1577 } 1578 } 1579 1580 int len = mPlaylistEntries.size(); 1581 int index = 0; 1582 for (int i = 0; i < len; i++) { 1583 PlaylistEntry entry = mPlaylistEntries.get(i); 1584 if (entry.bestmatchlevel > 0) { 1585 try { 1586 values.clear(); 1587 values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, Integer.valueOf(index)); 1588 values.put(MediaStore.Audio.Playlists.Members.AUDIO_ID, Long.valueOf(entry.bestmatchid)); 1589 mMediaProvider.insert(playlistUri, values); 1590 index++; 1591 } catch (RemoteException e) { 1592 Log.e(TAG, "RemoteException in MediaScanner.processCachedPlaylist()", e); 1593 return; 1594 } 1595 } 1596 } 1597 mPlaylistEntries.clear(); 1598 } 1599 1600 private void processM3uPlayList(String path, String playListDirectory, Uri uri, 1601 ContentValues values, Cursor fileList) { 1602 BufferedReader reader = null; 1603 try { 1604 File f = new File(path); 1605 if (f.exists()) { 1606 reader = new BufferedReader( 1607 new InputStreamReader(new FileInputStream(f)), 8192); 1608 String line = reader.readLine(); 1609 mPlaylistEntries.clear(); 1610 while (line != null) { 1611 // ignore comment lines, which begin with '#' 1612 if (line.length() > 0 && line.charAt(0) != '#') { 1613 cachePlaylistEntry(line, playListDirectory); 1614 } 1615 line = reader.readLine(); 1616 } 1617 1618 processCachedPlaylist(fileList, values, uri); 1619 } 1620 } catch (IOException e) { 1621 Log.e(TAG, "IOException in MediaScanner.processM3uPlayList()", e); 1622 } finally { 1623 try { 1624 if (reader != null) 1625 reader.close(); 1626 } catch (IOException e) { 1627 Log.e(TAG, "IOException in MediaScanner.processM3uPlayList()", e); 1628 } 1629 } 1630 } 1631 1632 private void processPlsPlayList(String path, String playListDirectory, Uri uri, 1633 ContentValues values, Cursor fileList) { 1634 BufferedReader reader = null; 1635 try { 1636 File f = new File(path); 1637 if (f.exists()) { 1638 reader = new BufferedReader( 1639 new InputStreamReader(new FileInputStream(f)), 8192); 1640 String line = reader.readLine(); 1641 mPlaylistEntries.clear(); 1642 while (line != null) { 1643 // ignore comment lines, which begin with '#' 1644 if (line.startsWith("File")) { 1645 int equals = line.indexOf('='); 1646 if (equals > 0) { 1647 cachePlaylistEntry(line.substring(equals + 1), playListDirectory); 1648 } 1649 } 1650 line = reader.readLine(); 1651 } 1652 1653 processCachedPlaylist(fileList, values, uri); 1654 } 1655 } catch (IOException e) { 1656 Log.e(TAG, "IOException in MediaScanner.processPlsPlayList()", e); 1657 } finally { 1658 try { 1659 if (reader != null) 1660 reader.close(); 1661 } catch (IOException e) { 1662 Log.e(TAG, "IOException in MediaScanner.processPlsPlayList()", e); 1663 } 1664 } 1665 } 1666 1667 class WplHandler implements ElementListener { 1668 1669 final ContentHandler handler; 1670 String playListDirectory; 1671 1672 public WplHandler(String playListDirectory, Uri uri, Cursor fileList) { 1673 this.playListDirectory = playListDirectory; 1674 1675 RootElement root = new RootElement("smil"); 1676 Element body = root.getChild("body"); 1677 Element seq = body.getChild("seq"); 1678 Element media = seq.getChild("media"); 1679 media.setElementListener(this); 1680 1681 this.handler = root.getContentHandler(); 1682 } 1683 1684 @Override 1685 public void start(Attributes attributes) { 1686 String path = attributes.getValue("", "src"); 1687 if (path != null) { 1688 cachePlaylistEntry(path, playListDirectory); 1689 } 1690 } 1691 1692 @Override 1693 public void end() { 1694 } 1695 1696 ContentHandler getContentHandler() { 1697 return handler; 1698 } 1699 } 1700 1701 private void processWplPlayList(String path, String playListDirectory, Uri uri, 1702 ContentValues values, Cursor fileList) { 1703 FileInputStream fis = null; 1704 try { 1705 File f = new File(path); 1706 if (f.exists()) { 1707 fis = new FileInputStream(f); 1708 1709 mPlaylistEntries.clear(); 1710 Xml.parse(fis, Xml.findEncodingByName("UTF-8"), 1711 new WplHandler(playListDirectory, uri, fileList).getContentHandler()); 1712 1713 processCachedPlaylist(fileList, values, uri); 1714 } 1715 } catch (SAXException e) { 1716 e.printStackTrace(); 1717 } catch (IOException e) { 1718 e.printStackTrace(); 1719 } finally { 1720 try { 1721 if (fis != null) 1722 fis.close(); 1723 } catch (IOException e) { 1724 Log.e(TAG, "IOException in MediaScanner.processWplPlayList()", e); 1725 } 1726 } 1727 } 1728 1729 private void processPlayList(FileEntry entry, Cursor fileList) throws RemoteException { 1730 String path = entry.mPath; 1731 ContentValues values = new ContentValues(); 1732 int lastSlash = path.lastIndexOf('/'); 1733 if (lastSlash < 0) throw new IllegalArgumentException("bad path " + path); 1734 Uri uri, membersUri; 1735 long rowId = entry.mRowId; 1736 1737 // make sure we have a name 1738 String name = values.getAsString(MediaStore.Audio.Playlists.NAME); 1739 if (name == null) { 1740 name = values.getAsString(MediaStore.MediaColumns.TITLE); 1741 if (name == null) { 1742 // extract name from file name 1743 int lastDot = path.lastIndexOf('.'); 1744 name = (lastDot < 0 ? path.substring(lastSlash + 1) 1745 : path.substring(lastSlash + 1, lastDot)); 1746 } 1747 } 1748 1749 values.put(MediaStore.Audio.Playlists.NAME, name); 1750 values.put(MediaStore.Audio.Playlists.DATE_MODIFIED, entry.mLastModified); 1751 1752 if (rowId == 0) { 1753 values.put(MediaStore.Audio.Playlists.DATA, path); 1754 uri = mMediaProvider.insert(mPlaylistsUri, values); 1755 rowId = ContentUris.parseId(uri); 1756 membersUri = Uri.withAppendedPath(uri, Playlists.Members.CONTENT_DIRECTORY); 1757 } else { 1758 uri = ContentUris.withAppendedId(mPlaylistsUri, rowId); 1759 mMediaProvider.update(uri, values, null, null); 1760 1761 // delete members of existing playlist 1762 membersUri = Uri.withAppendedPath(uri, Playlists.Members.CONTENT_DIRECTORY); 1763 mMediaProvider.delete(membersUri, null, null); 1764 } 1765 1766 String playListDirectory = path.substring(0, lastSlash + 1); 1767 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 1768 int fileType = (mediaFileType == null ? 0 : mediaFileType.fileType); 1769 1770 if (fileType == MediaFile.FILE_TYPE_M3U) { 1771 processM3uPlayList(path, playListDirectory, membersUri, values, fileList); 1772 } else if (fileType == MediaFile.FILE_TYPE_PLS) { 1773 processPlsPlayList(path, playListDirectory, membersUri, values, fileList); 1774 } else if (fileType == MediaFile.FILE_TYPE_WPL) { 1775 processWplPlayList(path, playListDirectory, membersUri, values, fileList); 1776 } 1777 } 1778 1779 private void processPlayLists() throws RemoteException { 1780 Iterator<FileEntry> iterator = mPlayLists.iterator(); 1781 Cursor fileList = null; 1782 try { 1783 // use the files uri and projection because we need the format column, 1784 // but restrict the query to just audio files 1785 fileList = mMediaProvider.query(mFilesUri, FILES_PRESCAN_PROJECTION, 1786 "media_type=2", null, null, null); 1787 while (iterator.hasNext()) { 1788 FileEntry entry = iterator.next(); 1789 // only process playlist files if they are new or have been modified since the last scan 1790 if (entry.mLastModifiedChanged) { 1791 processPlayList(entry, fileList); 1792 } 1793 } 1794 } catch (RemoteException e1) { 1795 } finally { 1796 if (fileList != null) { 1797 fileList.close(); 1798 } 1799 } 1800 } 1801 1802 private native void processDirectory(String path, MediaScannerClient client); 1803 private native void processFile(String path, String mimeType, MediaScannerClient client); 1804 public native void setLocale(String locale); 1805 1806 public native byte[] extractAlbumArt(FileDescriptor fd); 1807 1808 private static native final void native_init(); 1809 private native final void native_setup(); 1810 private native final void native_finalize(); 1811 1812 /** 1813 * Releases resources associated with this MediaScanner object. 1814 * It is considered good practice to call this method when 1815 * one is done using the MediaScanner object. After this method 1816 * is called, the MediaScanner object can no longer be used. 1817 */ 1818 public void release() { 1819 native_finalize(); 1820 } 1821 1822 @Override 1823 protected void finalize() { 1824 mContext.getContentResolver().releaseProvider(mMediaProvider); 1825 native_finalize(); 1826 } 1827} 1828