MediaScanner.java revision 75ea64fc54f328d37b115cfb1ded1e45c30380ed
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.Process; 35import android.os.RemoteException; 36import android.os.SystemProperties; 37import android.provider.MediaStore; 38import android.provider.Settings; 39import android.provider.MediaStore.Audio; 40import android.provider.MediaStore.Files; 41import android.provider.MediaStore.Images; 42import android.provider.MediaStore.Video; 43import android.provider.MediaStore.Audio.Playlists; 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.HashMap; 59import java.util.HashSet; 60import java.util.Iterator; 61 62/** 63 * Internal service helper that no-one should use directly. 64 * 65 * The way the scan currently works is: 66 * - The Java MediaScannerService creates a MediaScanner (this class), and calls 67 * MediaScanner.scanDirectories on it. 68 * - scanDirectories() calls the native processDirectory() for each of the specified directories. 69 * - the processDirectory() JNI method wraps the provided mediascanner client in a native 70 * 'MyMediaScannerClient' class, then calls processDirectory() on the native MediaScanner 71 * object (which got created when the Java MediaScanner was created). 72 * - native MediaScanner.processDirectory() (currently part of opencore) calls 73 * doProcessDirectory(), which recurses over the folder, and calls 74 * native MyMediaScannerClient.scanFile() for every file whose extension matches. 75 * - native MyMediaScannerClient.scanFile() calls back on Java MediaScannerClient.scanFile, 76 * which calls doScanFile, which after some setup calls back down to native code, calling 77 * MediaScanner.processFile(). 78 * - MediaScanner.processFile() calls one of several methods, depending on the type of the 79 * file: parseMP3, parseMP4, parseMidi, parseOgg or parseWMA. 80 * - each of these methods gets metadata key/value pairs from the file, and repeatedly 81 * calls native MyMediaScannerClient.handleStringTag, which calls back up to its Java 82 * counterparts in this file. 83 * - Java handleStringTag() gathers the key/value pairs that it's interested in. 84 * - once processFile returns and we're back in Java code in doScanFile(), it calls 85 * Java MyMediaScannerClient.endFile(), which takes all the data that's been 86 * gathered and inserts an entry in to the database. 87 * 88 * In summary: 89 * Java MediaScannerService calls 90 * Java MediaScanner scanDirectories, which calls 91 * Java MediaScanner processDirectory (native method), which calls 92 * native MediaScanner processDirectory, which calls 93 * native MyMediaScannerClient scanFile, which calls 94 * Java MyMediaScannerClient scanFile, which calls 95 * Java MediaScannerClient doScanFile, which calls 96 * Java MediaScanner processFile (native method), which calls 97 * native MediaScanner processFile, which calls 98 * native parseMP3, parseMP4, parseMidi, parseOgg or parseWMA, which calls 99 * native MyMediaScanner handleStringTag, which calls 100 * Java MyMediaScanner handleStringTag. 101 * Once MediaScanner processFile returns, an entry is inserted in to the database. 102 * 103 * The MediaScanner class is not thread-safe, so it should only be used in a single threaded manner. 104 * 105 * {@hide} 106 */ 107public class MediaScanner 108{ 109 static { 110 System.loadLibrary("media_jni"); 111 native_init(); 112 } 113 114 private final static String TAG = "MediaScanner"; 115 116 private static final String[] FILES_PRESCAN_PROJECTION = new String[] { 117 Files.FileColumns._ID, // 0 118 Files.FileColumns.DATA, // 1 119 Files.FileColumns.FORMAT, // 2 120 Files.FileColumns.DATE_MODIFIED, // 3 121 }; 122 123 private static final String[] ID_PROJECTION = new String[] { 124 Files.FileColumns._ID, 125 }; 126 127 private static final int FILES_PRESCAN_ID_COLUMN_INDEX = 0; 128 private static final int FILES_PRESCAN_PATH_COLUMN_INDEX = 1; 129 private static final int FILES_PRESCAN_FORMAT_COLUMN_INDEX = 2; 130 private static final int FILES_PRESCAN_DATE_MODIFIED_COLUMN_INDEX = 3; 131 132 private static final String[] PLAYLIST_MEMBERS_PROJECTION = new String[] { 133 Audio.Playlists.Members.PLAYLIST_ID, // 0 134 }; 135 136 private static final int ID_PLAYLISTS_COLUMN_INDEX = 0; 137 private static final int PATH_PLAYLISTS_COLUMN_INDEX = 1; 138 private static final int DATE_MODIFIED_PLAYLISTS_COLUMN_INDEX = 2; 139 140 private static final String RINGTONES_DIR = "/ringtones/"; 141 private static final String NOTIFICATIONS_DIR = "/notifications/"; 142 private static final String ALARMS_DIR = "/alarms/"; 143 private static final String MUSIC_DIR = "/music/"; 144 private static final String PODCAST_DIR = "/podcasts/"; 145 146 private static final String[] ID3_GENRES = { 147 // ID3v1 Genres 148 "Blues", 149 "Classic Rock", 150 "Country", 151 "Dance", 152 "Disco", 153 "Funk", 154 "Grunge", 155 "Hip-Hop", 156 "Jazz", 157 "Metal", 158 "New Age", 159 "Oldies", 160 "Other", 161 "Pop", 162 "R&B", 163 "Rap", 164 "Reggae", 165 "Rock", 166 "Techno", 167 "Industrial", 168 "Alternative", 169 "Ska", 170 "Death Metal", 171 "Pranks", 172 "Soundtrack", 173 "Euro-Techno", 174 "Ambient", 175 "Trip-Hop", 176 "Vocal", 177 "Jazz+Funk", 178 "Fusion", 179 "Trance", 180 "Classical", 181 "Instrumental", 182 "Acid", 183 "House", 184 "Game", 185 "Sound Clip", 186 "Gospel", 187 "Noise", 188 "AlternRock", 189 "Bass", 190 "Soul", 191 "Punk", 192 "Space", 193 "Meditative", 194 "Instrumental Pop", 195 "Instrumental Rock", 196 "Ethnic", 197 "Gothic", 198 "Darkwave", 199 "Techno-Industrial", 200 "Electronic", 201 "Pop-Folk", 202 "Eurodance", 203 "Dream", 204 "Southern Rock", 205 "Comedy", 206 "Cult", 207 "Gangsta", 208 "Top 40", 209 "Christian Rap", 210 "Pop/Funk", 211 "Jungle", 212 "Native American", 213 "Cabaret", 214 "New Wave", 215 "Psychadelic", 216 "Rave", 217 "Showtunes", 218 "Trailer", 219 "Lo-Fi", 220 "Tribal", 221 "Acid Punk", 222 "Acid Jazz", 223 "Polka", 224 "Retro", 225 "Musical", 226 "Rock & Roll", 227 "Hard Rock", 228 // The following genres are Winamp extensions 229 "Folk", 230 "Folk-Rock", 231 "National Folk", 232 "Swing", 233 "Fast Fusion", 234 "Bebob", 235 "Latin", 236 "Revival", 237 "Celtic", 238 "Bluegrass", 239 "Avantgarde", 240 "Gothic Rock", 241 "Progressive Rock", 242 "Psychedelic Rock", 243 "Symphonic Rock", 244 "Slow Rock", 245 "Big Band", 246 "Chorus", 247 "Easy Listening", 248 "Acoustic", 249 "Humour", 250 "Speech", 251 "Chanson", 252 "Opera", 253 "Chamber Music", 254 "Sonata", 255 "Symphony", 256 "Booty Bass", 257 "Primus", 258 "Porn Groove", 259 "Satire", 260 "Slow Jam", 261 "Club", 262 "Tango", 263 "Samba", 264 "Folklore", 265 "Ballad", 266 "Power Ballad", 267 "Rhythmic Soul", 268 "Freestyle", 269 "Duet", 270 "Punk Rock", 271 "Drum Solo", 272 "A capella", 273 "Euro-House", 274 "Dance Hall", 275 // The following ones seem to be fairly widely supported as well 276 "Goa", 277 "Drum & Bass", 278 "Club-House", 279 "Hardcore", 280 "Terror", 281 "Indie", 282 "Britpop", 283 "Negerpunk", 284 "Polsk Punk", 285 "Beat", 286 "Christian Gangsta", 287 "Heavy Metal", 288 "Black Metal", 289 "Crossover", 290 "Contemporary Christian", 291 "Christian Rock", 292 "Merengue", 293 "Salsa", 294 "Thrash Metal", 295 "Anime", 296 "JPop", 297 "Synthpop", 298 // 148 and up don't seem to have been defined yet. 299 }; 300 301 private int mNativeContext; 302 private Context mContext; 303 private IContentProvider mMediaProvider; 304 private Uri mAudioUri; 305 private Uri mVideoUri; 306 private Uri mImagesUri; 307 private Uri mThumbsUri; 308 private Uri mPlaylistsUri; 309 private Uri mFilesUri; 310 private boolean mProcessPlaylists, mProcessGenres; 311 private int mMtpObjectHandle; 312 313 private final String mExternalStoragePath; 314 315 // WARNING: Bulk inserts sounded like a great idea and gave us a good performance improvement, 316 // but unfortunately it also introduced a number of bugs. All the known bugs were fixed, 317 // but we need more testing before enabling. 318 private static final boolean ENABLE_BULK_INSERTS = false; 319 320 // used when scanning the image database so we know whether we have to prune 321 // old thumbnail files 322 private int mOriginalCount; 323 /** Whether the database had any entries in it before the scan started */ 324 private boolean mWasEmptyPriorToScan = false; 325 /** Whether the scanner has set a default sound for the ringer ringtone. */ 326 private boolean mDefaultRingtoneSet; 327 /** Whether the scanner has set a default sound for the notification ringtone. */ 328 private boolean mDefaultNotificationSet; 329 /** Whether the scanner has set a default sound for the alarm ringtone. */ 330 private boolean mDefaultAlarmSet; 331 /** The filename for the default sound for the ringer ringtone. */ 332 private String mDefaultRingtoneFilename; 333 /** The filename for the default sound for the notification ringtone. */ 334 private String mDefaultNotificationFilename; 335 /** The filename for the default sound for the alarm ringtone. */ 336 private String mDefaultAlarmAlertFilename; 337 /** 338 * The prefix for system properties that define the default sound for 339 * ringtones. Concatenate the name of the setting from Settings 340 * to get the full system property. 341 */ 342 private static final String DEFAULT_RINGTONE_PROPERTY_PREFIX = "ro.config."; 343 344 // set to true if file path comparisons should be case insensitive. 345 // this should be set when scanning files on a case insensitive file system. 346 private boolean mCaseInsensitivePaths; 347 348 private BitmapFactory.Options mBitmapOptions = new BitmapFactory.Options(); 349 350 private static class FileCacheEntry { 351 long mRowId; 352 String mPath; 353 long mLastModified; 354 int mFormat; 355 boolean mSeenInFileSystem; 356 boolean mLastModifiedChanged; 357 358 FileCacheEntry(long rowId, String path, long lastModified, int format) { 359 mRowId = rowId; 360 mPath = path; 361 mLastModified = lastModified; 362 mFormat = format; 363 mSeenInFileSystem = false; 364 mLastModifiedChanged = false; 365 } 366 367 @Override 368 public String toString() { 369 return mPath + " mRowId: " + mRowId; 370 } 371 } 372 373 private MediaInserter mMediaInserter; 374 375 // hashes file path to FileCacheEntry. 376 // path should be lower case if mCaseInsensitivePaths is true 377 private HashMap<String, FileCacheEntry> mFileCache; 378 379 private ArrayList<FileCacheEntry> mPlayLists; 380 381 private DrmManagerClient mDrmManagerClient = null; 382 383 public MediaScanner(Context c) { 384 native_setup(); 385 mContext = c; 386 mBitmapOptions.inSampleSize = 1; 387 mBitmapOptions.inJustDecodeBounds = true; 388 389 setDefaultRingtoneFileNames(); 390 391 mExternalStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath(); 392 //mClient.testGenreNameConverter(); 393 } 394 395 private void setDefaultRingtoneFileNames() { 396 mDefaultRingtoneFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX 397 + Settings.System.RINGTONE); 398 mDefaultNotificationFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX 399 + Settings.System.NOTIFICATION_SOUND); 400 mDefaultAlarmAlertFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX 401 + Settings.System.ALARM_ALERT); 402 } 403 404 private MyMediaScannerClient mClient = new MyMediaScannerClient(); 405 406 private boolean isDrmEnabled() { 407 String prop = SystemProperties.get("drm.service.enabled"); 408 return prop != null && prop.equals("true"); 409 } 410 411 private class MyMediaScannerClient implements MediaScannerClient { 412 413 private String mArtist; 414 private String mAlbumArtist; // use this if mArtist is missing 415 private String mAlbum; 416 private String mTitle; 417 private String mComposer; 418 private String mGenre; 419 private String mMimeType; 420 private int mFileType; 421 private int mTrack; 422 private int mYear; 423 private int mDuration; 424 private String mPath; 425 private long mLastModified; 426 private long mFileSize; 427 private String mWriter; 428 private int mCompilation; 429 private boolean mIsDrm; 430 private boolean mNoMedia; // flag to suppress file from appearing in media tables 431 private int mWidth; 432 private int mHeight; 433 434 public FileCacheEntry beginFile(String path, String mimeType, long lastModified, 435 long fileSize, boolean isDirectory, boolean noMedia) { 436 mMimeType = mimeType; 437 mFileType = 0; 438 mFileSize = fileSize; 439 440 if (!isDirectory) { 441 if (!noMedia && isNoMediaFile(path)) { 442 noMedia = true; 443 } 444 mNoMedia = noMedia; 445 446 // try mimeType first, if it is specified 447 if (mimeType != null) { 448 mFileType = MediaFile.getFileTypeForMimeType(mimeType); 449 } 450 451 // if mimeType was not specified, compute file type based on file extension. 452 if (mFileType == 0) { 453 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 454 if (mediaFileType != null) { 455 mFileType = mediaFileType.fileType; 456 if (mMimeType == null) { 457 mMimeType = mediaFileType.mimeType; 458 } 459 } 460 } 461 462 if (isDrmEnabled() && MediaFile.isDrmFileType(mFileType)) { 463 mFileType = getFileTypeFromDrm(path); 464 } 465 } 466 467 String key = path; 468 if (mCaseInsensitivePaths) { 469 key = path.toLowerCase(); 470 } 471 FileCacheEntry entry = mFileCache.get(key); 472 // add some slack to avoid a rounding error 473 long delta = (entry != null) ? (lastModified - entry.mLastModified) : 0; 474 boolean wasModified = delta > 1 || delta < -1; 475 if (entry == null || wasModified) { 476 if (wasModified) { 477 entry.mLastModified = lastModified; 478 } else { 479 entry = new FileCacheEntry(0, path, lastModified, 480 (isDirectory ? MtpConstants.FORMAT_ASSOCIATION : 0)); 481 mFileCache.put(key, entry); 482 } 483 entry.mLastModifiedChanged = true; 484 } 485 entry.mSeenInFileSystem = true; 486 487 if (mProcessPlaylists && MediaFile.isPlayListFileType(mFileType)) { 488 mPlayLists.add(entry); 489 // we don't process playlists in the main scan, so return null 490 return null; 491 } 492 493 // clear all the metadata 494 mArtist = null; 495 mAlbumArtist = null; 496 mAlbum = null; 497 mTitle = null; 498 mComposer = null; 499 mGenre = null; 500 mTrack = 0; 501 mYear = 0; 502 mDuration = 0; 503 mPath = path; 504 mLastModified = lastModified; 505 mWriter = null; 506 mCompilation = 0; 507 mIsDrm = false; 508 mWidth = 0; 509 mHeight = 0; 510 511 return entry; 512 } 513 514 @Override 515 public void scanFile(String path, long lastModified, long fileSize, 516 boolean isDirectory, boolean noMedia) { 517 // This is the callback funtion from native codes. 518 // Log.v(TAG, "scanFile: "+path); 519 doScanFile(path, null, lastModified, fileSize, isDirectory, false, noMedia); 520 } 521 522 public Uri doScanFile(String path, String mimeType, long lastModified, 523 long fileSize, boolean isDirectory, boolean scanAlways, boolean noMedia) { 524 Uri result = null; 525// long t1 = System.currentTimeMillis(); 526 try { 527 FileCacheEntry entry = beginFile(path, mimeType, lastModified, 528 fileSize, isDirectory, noMedia); 529 // rescan for metadata if file was modified since last scan 530 if (entry != null && (entry.mLastModifiedChanged || scanAlways)) { 531 if (noMedia) { 532 result = endFile(entry, false, false, false, false, false); 533 } else { 534 String lowpath = path.toLowerCase(); 535 boolean ringtones = (lowpath.indexOf(RINGTONES_DIR) > 0); 536 boolean notifications = (lowpath.indexOf(NOTIFICATIONS_DIR) > 0); 537 boolean alarms = (lowpath.indexOf(ALARMS_DIR) > 0); 538 boolean podcasts = (lowpath.indexOf(PODCAST_DIR) > 0); 539 boolean music = (lowpath.indexOf(MUSIC_DIR) > 0) || 540 (!ringtones && !notifications && !alarms && !podcasts); 541 542 // we only extract metadata for audio and video files 543 if (MediaFile.isAudioFileType(mFileType) 544 || MediaFile.isVideoFileType(mFileType)) { 545 processFile(path, mimeType, this); 546 } 547 548 if (MediaFile.isImageFileType(mFileType)) { 549 processImageFile(path); 550 } 551 552 result = endFile(entry, ringtones, notifications, alarms, music, podcasts); 553 } 554 } 555 } catch (RemoteException e) { 556 Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e); 557 } 558// long t2 = System.currentTimeMillis(); 559// Log.v(TAG, "scanFile: " + path + " took " + (t2-t1)); 560 return result; 561 } 562 563 private int parseSubstring(String s, int start, int defaultValue) { 564 int length = s.length(); 565 if (start == length) return defaultValue; 566 567 char ch = s.charAt(start++); 568 // return defaultValue if we have no integer at all 569 if (ch < '0' || ch > '9') return defaultValue; 570 571 int result = ch - '0'; 572 while (start < length) { 573 ch = s.charAt(start++); 574 if (ch < '0' || ch > '9') return result; 575 result = result * 10 + (ch - '0'); 576 } 577 578 return result; 579 } 580 581 public void handleStringTag(String name, String value) { 582 if (name.equalsIgnoreCase("title") || name.startsWith("title;")) { 583 // Don't trim() here, to preserve the special \001 character 584 // used to force sorting. The media provider will trim() before 585 // inserting the title in to the database. 586 mTitle = value; 587 } else if (name.equalsIgnoreCase("artist") || name.startsWith("artist;")) { 588 mArtist = value.trim(); 589 } else if (name.equalsIgnoreCase("albumartist") || name.startsWith("albumartist;") 590 || name.equalsIgnoreCase("band") || name.startsWith("band;")) { 591 mAlbumArtist = value.trim(); 592 } else if (name.equalsIgnoreCase("album") || name.startsWith("album;")) { 593 mAlbum = value.trim(); 594 } else if (name.equalsIgnoreCase("composer") || name.startsWith("composer;")) { 595 mComposer = value.trim(); 596 } else if (mProcessGenres && 597 (name.equalsIgnoreCase("genre") || name.startsWith("genre;"))) { 598 mGenre = getGenreName(value); 599 } else if (name.equalsIgnoreCase("year") || name.startsWith("year;")) { 600 mYear = parseSubstring(value, 0, 0); 601 } else if (name.equalsIgnoreCase("tracknumber") || name.startsWith("tracknumber;")) { 602 // track number might be of the form "2/12" 603 // we just read the number before the slash 604 int num = parseSubstring(value, 0, 0); 605 mTrack = (mTrack / 1000) * 1000 + num; 606 } else if (name.equalsIgnoreCase("discnumber") || 607 name.equals("set") || name.startsWith("set;")) { 608 // set number might be of the form "1/3" 609 // we just read the number before the slash 610 int num = parseSubstring(value, 0, 0); 611 mTrack = (num * 1000) + (mTrack % 1000); 612 } else if (name.equalsIgnoreCase("duration")) { 613 mDuration = parseSubstring(value, 0, 0); 614 } else if (name.equalsIgnoreCase("writer") || name.startsWith("writer;")) { 615 mWriter = value.trim(); 616 } else if (name.equalsIgnoreCase("compilation")) { 617 mCompilation = parseSubstring(value, 0, 0); 618 } else if (name.equalsIgnoreCase("isdrm")) { 619 mIsDrm = (parseSubstring(value, 0, 0) == 1); 620 } else { 621 //Log.v(TAG, "unknown tag: " + name + " (" + mProcessGenres + ")"); 622 } 623 } 624 625 private boolean convertGenreCode(String input, String expected) { 626 String output = getGenreName(input); 627 if (output.equals(expected)) { 628 return true; 629 } else { 630 Log.d(TAG, "'" + input + "' -> '" + output + "', expected '" + expected + "'"); 631 return false; 632 } 633 } 634 private void testGenreNameConverter() { 635 convertGenreCode("2", "Country"); 636 convertGenreCode("(2)", "Country"); 637 convertGenreCode("(2", "(2"); 638 convertGenreCode("2 Foo", "Country"); 639 convertGenreCode("(2) Foo", "Country"); 640 convertGenreCode("(2 Foo", "(2 Foo"); 641 convertGenreCode("2Foo", "2Foo"); 642 convertGenreCode("(2)Foo", "Country"); 643 convertGenreCode("200 Foo", "Foo"); 644 convertGenreCode("(200) Foo", "Foo"); 645 convertGenreCode("200Foo", "200Foo"); 646 convertGenreCode("(200)Foo", "Foo"); 647 convertGenreCode("200)Foo", "200)Foo"); 648 convertGenreCode("200) Foo", "200) Foo"); 649 } 650 651 public String getGenreName(String genreTagValue) { 652 653 if (genreTagValue == null) { 654 return null; 655 } 656 final int length = genreTagValue.length(); 657 658 if (length > 0) { 659 boolean parenthesized = false; 660 StringBuffer number = new StringBuffer(); 661 int i = 0; 662 for (; i < length; ++i) { 663 char c = genreTagValue.charAt(i); 664 if (i == 0 && c == '(') { 665 parenthesized = true; 666 } else if (Character.isDigit(c)) { 667 number.append(c); 668 } else { 669 break; 670 } 671 } 672 char charAfterNumber = i < length ? genreTagValue.charAt(i) : ' '; 673 if ((parenthesized && charAfterNumber == ')') 674 || !parenthesized && Character.isWhitespace(charAfterNumber)) { 675 try { 676 short genreIndex = Short.parseShort(number.toString()); 677 if (genreIndex >= 0) { 678 if (genreIndex < ID3_GENRES.length) { 679 return ID3_GENRES[genreIndex]; 680 } else if (genreIndex == 0xFF) { 681 return null; 682 } else if (genreIndex < 0xFF && (i + 1) < length) { 683 // genre is valid but unknown, 684 // if there is a string after the value we take it 685 if (parenthesized && charAfterNumber == ')') { 686 i++; 687 } 688 String ret = genreTagValue.substring(i).trim(); 689 if (ret.length() != 0) { 690 return ret; 691 } 692 } else { 693 // else return the number, without parentheses 694 return number.toString(); 695 } 696 } 697 } catch (NumberFormatException e) { 698 } 699 } 700 } 701 702 return genreTagValue; 703 } 704 705 private void processImageFile(String path) { 706 try { 707 mBitmapOptions.outWidth = 0; 708 mBitmapOptions.outHeight = 0; 709 BitmapFactory.decodeFile(path, mBitmapOptions); 710 mWidth = mBitmapOptions.outWidth; 711 mHeight = mBitmapOptions.outHeight; 712 } catch (Throwable th) { 713 // ignore; 714 } 715 } 716 717 public void setMimeType(String mimeType) { 718 if ("audio/mp4".equals(mMimeType) && 719 mimeType.startsWith("video")) { 720 // for feature parity with Donut, we force m4a files to keep the 721 // audio/mp4 mimetype, even if they are really "enhanced podcasts" 722 // with a video track 723 return; 724 } 725 mMimeType = mimeType; 726 mFileType = MediaFile.getFileTypeForMimeType(mimeType); 727 } 728 729 /** 730 * Formats the data into a values array suitable for use with the Media 731 * Content Provider. 732 * 733 * @return a map of values 734 */ 735 private ContentValues toValues() { 736 ContentValues map = new ContentValues(); 737 738 map.put(MediaStore.MediaColumns.DATA, mPath); 739 map.put(MediaStore.MediaColumns.TITLE, mTitle); 740 map.put(MediaStore.MediaColumns.DATE_MODIFIED, mLastModified); 741 map.put(MediaStore.MediaColumns.SIZE, mFileSize); 742 map.put(MediaStore.MediaColumns.MIME_TYPE, mMimeType); 743 map.put(MediaStore.MediaColumns.IS_DRM, mIsDrm); 744 745 if (mWidth > 0 && mHeight > 0) { 746 map.put(MediaStore.MediaColumns.WIDTH, mWidth); 747 map.put(MediaStore.MediaColumns.HEIGHT, mHeight); 748 } 749 750 if (!mNoMedia) { 751 if (MediaFile.isVideoFileType(mFileType)) { 752 map.put(Video.Media.ARTIST, (mArtist != null && mArtist.length() > 0 753 ? mArtist : MediaStore.UNKNOWN_STRING)); 754 map.put(Video.Media.ALBUM, (mAlbum != null && mAlbum.length() > 0 755 ? mAlbum : MediaStore.UNKNOWN_STRING)); 756 map.put(Video.Media.DURATION, mDuration); 757 // FIXME - add RESOLUTION 758 } else if (MediaFile.isImageFileType(mFileType)) { 759 // FIXME - add DESCRIPTION 760 } else if (MediaFile.isAudioFileType(mFileType)) { 761 map.put(Audio.Media.ARTIST, (mArtist != null && mArtist.length() > 0) ? 762 mArtist : MediaStore.UNKNOWN_STRING); 763 map.put(Audio.Media.ALBUM_ARTIST, (mAlbumArtist != null && 764 mAlbumArtist.length() > 0) ? mAlbumArtist : null); 765 map.put(Audio.Media.ALBUM, (mAlbum != null && mAlbum.length() > 0) ? 766 mAlbum : MediaStore.UNKNOWN_STRING); 767 map.put(Audio.Media.COMPOSER, mComposer); 768 map.put(Audio.Media.GENRE, mGenre); 769 if (mYear != 0) { 770 map.put(Audio.Media.YEAR, mYear); 771 } 772 map.put(Audio.Media.TRACK, mTrack); 773 map.put(Audio.Media.DURATION, mDuration); 774 map.put(Audio.Media.COMPILATION, mCompilation); 775 } 776 } 777 return map; 778 } 779 780 private Uri endFile(FileCacheEntry entry, boolean ringtones, boolean notifications, 781 boolean alarms, boolean music, boolean podcasts) 782 throws RemoteException { 783 // update database 784 785 // use album artist if artist is missing 786 if (mArtist == null || mArtist.length() == 0) { 787 mArtist = mAlbumArtist; 788 } 789 790 ContentValues values = toValues(); 791 String title = values.getAsString(MediaStore.MediaColumns.TITLE); 792 if (title == null || TextUtils.isEmpty(title.trim())) { 793 title = MediaFile.getFileTitle(values.getAsString(MediaStore.MediaColumns.DATA)); 794 values.put(MediaStore.MediaColumns.TITLE, title); 795 } 796 String album = values.getAsString(Audio.Media.ALBUM); 797 if (MediaStore.UNKNOWN_STRING.equals(album)) { 798 album = values.getAsString(MediaStore.MediaColumns.DATA); 799 // extract last path segment before file name 800 int lastSlash = album.lastIndexOf('/'); 801 if (lastSlash >= 0) { 802 int previousSlash = 0; 803 while (true) { 804 int idx = album.indexOf('/', previousSlash + 1); 805 if (idx < 0 || idx >= lastSlash) { 806 break; 807 } 808 previousSlash = idx; 809 } 810 if (previousSlash != 0) { 811 album = album.substring(previousSlash + 1, lastSlash); 812 values.put(Audio.Media.ALBUM, album); 813 } 814 } 815 } 816 long rowId = entry.mRowId; 817 if (MediaFile.isAudioFileType(mFileType) && (rowId == 0 || mMtpObjectHandle != 0)) { 818 // Only set these for new entries. For existing entries, they 819 // may have been modified later, and we want to keep the current 820 // values so that custom ringtones still show up in the ringtone 821 // picker. 822 values.put(Audio.Media.IS_RINGTONE, ringtones); 823 values.put(Audio.Media.IS_NOTIFICATION, notifications); 824 values.put(Audio.Media.IS_ALARM, alarms); 825 values.put(Audio.Media.IS_MUSIC, music); 826 values.put(Audio.Media.IS_PODCAST, podcasts); 827 } else if (mFileType == MediaFile.FILE_TYPE_JPEG && !mNoMedia) { 828 ExifInterface exif = null; 829 try { 830 exif = new ExifInterface(entry.mPath); 831 } catch (IOException ex) { 832 // exif is null 833 } 834 if (exif != null) { 835 float[] latlng = new float[2]; 836 if (exif.getLatLong(latlng)) { 837 values.put(Images.Media.LATITUDE, latlng[0]); 838 values.put(Images.Media.LONGITUDE, latlng[1]); 839 } 840 841 long time = exif.getGpsDateTime(); 842 if (time != -1) { 843 values.put(Images.Media.DATE_TAKEN, time); 844 } else { 845 // If no time zone information is available, we should consider using 846 // EXIF local time as taken time if the difference between file time 847 // and EXIF local time is not less than 1 Day, otherwise MediaProvider 848 // will use file time as taken time. 849 time = exif.getDateTime(); 850 if (Math.abs(mLastModified * 1000 - time) >= 86400000) { 851 values.put(Images.Media.DATE_TAKEN, time); 852 } 853 } 854 855 int orientation = exif.getAttributeInt( 856 ExifInterface.TAG_ORIENTATION, -1); 857 if (orientation != -1) { 858 // We only recognize a subset of orientation tag values. 859 int degree; 860 switch(orientation) { 861 case ExifInterface.ORIENTATION_ROTATE_90: 862 degree = 90; 863 break; 864 case ExifInterface.ORIENTATION_ROTATE_180: 865 degree = 180; 866 break; 867 case ExifInterface.ORIENTATION_ROTATE_270: 868 degree = 270; 869 break; 870 default: 871 degree = 0; 872 break; 873 } 874 values.put(Images.Media.ORIENTATION, degree); 875 } 876 } 877 } 878 879 Uri tableUri = mFilesUri; 880 MediaInserter inserter = mMediaInserter; 881 if (!mNoMedia) { 882 if (MediaFile.isVideoFileType(mFileType)) { 883 tableUri = mVideoUri; 884 } else if (MediaFile.isImageFileType(mFileType)) { 885 tableUri = mImagesUri; 886 } else if (MediaFile.isAudioFileType(mFileType)) { 887 tableUri = mAudioUri; 888 } 889 } 890 Uri result = null; 891 boolean needToSetSettings = false; 892 if (rowId == 0) { 893 if (mMtpObjectHandle != 0) { 894 values.put(MediaStore.MediaColumns.MEDIA_SCANNER_NEW_OBJECT_ID, mMtpObjectHandle); 895 } 896 if (tableUri == mFilesUri) { 897 int format = entry.mFormat; 898 if (format == 0) { 899 format = MediaFile.getFormatCode(entry.mPath, mMimeType); 900 } 901 values.put(Files.FileColumns.FORMAT, format); 902 } 903 // Setting a flag in order not to use bulk insert for the file related with 904 // notifications, ringtones, and alarms, because the rowId of the inserted file is 905 // needed. 906 if (mWasEmptyPriorToScan) { 907 if (notifications && !mDefaultNotificationSet) { 908 if (TextUtils.isEmpty(mDefaultNotificationFilename) || 909 doesPathHaveFilename(entry.mPath, mDefaultNotificationFilename)) { 910 needToSetSettings = true; 911 } 912 } else if (ringtones && !mDefaultRingtoneSet) { 913 if (TextUtils.isEmpty(mDefaultRingtoneFilename) || 914 doesPathHaveFilename(entry.mPath, mDefaultRingtoneFilename)) { 915 needToSetSettings = true; 916 } 917 } else if (alarms && !mDefaultAlarmSet) { 918 if (TextUtils.isEmpty(mDefaultAlarmAlertFilename) || 919 doesPathHaveFilename(entry.mPath, mDefaultAlarmAlertFilename)) { 920 needToSetSettings = true; 921 } 922 } 923 } 924 925 // new file, insert it 926 // We insert directories immediately to ensure they are in the database 927 // before the files they contain. 928 // Otherwise we can get duplicate directory entries in the database 929 // if one of the media FileInserters is flushed before the files table FileInserter 930 // Also, we immediately insert the file if the rowId of the inserted file is 931 // needed. 932 if (inserter == null || needToSetSettings || 933 entry.mFormat == MtpConstants.FORMAT_ASSOCIATION) { 934 result = mMediaProvider.insert(tableUri, values); 935 } else { 936 inserter.insert(tableUri, values); 937 } 938 939 if (result != null) { 940 rowId = ContentUris.parseId(result); 941 entry.mRowId = rowId; 942 } 943 } else { 944 // updated file 945 result = ContentUris.withAppendedId(tableUri, rowId); 946 // path should never change, and we want to avoid replacing mixed cased paths 947 // with squashed lower case paths 948 values.remove(MediaStore.MediaColumns.DATA); 949 mMediaProvider.update(result, values, null, null); 950 } 951 952 if(needToSetSettings) { 953 if (notifications) { 954 setSettingIfNotSet(Settings.System.NOTIFICATION_SOUND, tableUri, rowId); 955 mDefaultNotificationSet = true; 956 } else if (ringtones) { 957 setSettingIfNotSet(Settings.System.RINGTONE, tableUri, rowId); 958 mDefaultRingtoneSet = true; 959 } else if (alarms) { 960 setSettingIfNotSet(Settings.System.ALARM_ALERT, tableUri, rowId); 961 mDefaultAlarmSet = true; 962 } 963 } 964 965 return result; 966 } 967 968 private boolean doesPathHaveFilename(String path, String filename) { 969 int pathFilenameStart = path.lastIndexOf(File.separatorChar) + 1; 970 int filenameLength = filename.length(); 971 return path.regionMatches(pathFilenameStart, filename, 0, filenameLength) && 972 pathFilenameStart + filenameLength == path.length(); 973 } 974 975 private void setSettingIfNotSet(String settingName, Uri uri, long rowId) { 976 977 String existingSettingValue = Settings.System.getString(mContext.getContentResolver(), 978 settingName); 979 980 if (TextUtils.isEmpty(existingSettingValue)) { 981 // Set the setting to the given URI 982 Settings.System.putString(mContext.getContentResolver(), settingName, 983 ContentUris.withAppendedId(uri, rowId).toString()); 984 } 985 } 986 987 private int getFileTypeFromDrm(String path) { 988 if (!isDrmEnabled()) { 989 return 0; 990 } 991 992 int resultFileType = 0; 993 994 if (mDrmManagerClient == null) { 995 mDrmManagerClient = new DrmManagerClient(mContext); 996 } 997 998 if (mDrmManagerClient.canHandle(path, null)) { 999 String drmMimetype = mDrmManagerClient.getOriginalMimeType(path); 1000 if (drmMimetype != null) { 1001 mMimeType = drmMimetype; 1002 resultFileType = MediaFile.getFileTypeForMimeType(drmMimetype); 1003 } 1004 } 1005 return resultFileType; 1006 } 1007 1008 }; // end of anonymous MediaScannerClient instance 1009 1010 private void prescan(String filePath, boolean prescanFiles) throws RemoteException { 1011 Cursor c = null; 1012 String where = null; 1013 String[] selectionArgs = null; 1014 1015 if (mFileCache == null) { 1016 mFileCache = new HashMap<String, FileCacheEntry>(); 1017 } else { 1018 mFileCache.clear(); 1019 } 1020 if (mPlayLists == null) { 1021 mPlayLists = new ArrayList<FileCacheEntry>(); 1022 } else { 1023 mPlayLists.clear(); 1024 } 1025 1026 if (filePath != null) { 1027 // query for only one file 1028 where = Files.FileColumns.DATA + "=?"; 1029 selectionArgs = new String[] { filePath }; 1030 } 1031 1032 // Build the list of files from the content provider 1033 try { 1034 if (prescanFiles) { 1035 // First read existing files from the files table 1036 1037 c = mMediaProvider.query(mFilesUri, FILES_PRESCAN_PROJECTION, 1038 where, selectionArgs, null, null); 1039 1040 if (c != null) { 1041 mWasEmptyPriorToScan = c.getCount() == 0; 1042 while (c.moveToNext()) { 1043 long rowId = c.getLong(FILES_PRESCAN_ID_COLUMN_INDEX); 1044 String path = c.getString(FILES_PRESCAN_PATH_COLUMN_INDEX); 1045 int format = c.getInt(FILES_PRESCAN_FORMAT_COLUMN_INDEX); 1046 long lastModified = c.getLong(FILES_PRESCAN_DATE_MODIFIED_COLUMN_INDEX); 1047 1048 // Only consider entries with absolute path names. 1049 // This allows storing URIs in the database without the 1050 // media scanner removing them. 1051 if (path != null && path.startsWith("/")) { 1052 String key = path; 1053 if (mCaseInsensitivePaths) { 1054 key = path.toLowerCase(); 1055 } 1056 1057 FileCacheEntry entry = new FileCacheEntry(rowId, path, 1058 lastModified, format); 1059 mFileCache.put(key, entry); 1060 } 1061 } 1062 c.close(); 1063 c = null; 1064 } 1065 } 1066 } 1067 finally { 1068 if (c != null) { 1069 c.close(); 1070 } 1071 } 1072 1073 // compute original size of images 1074 mOriginalCount = 0; 1075 c = mMediaProvider.query(mImagesUri, ID_PROJECTION, null, null, null, null); 1076 if (c != null) { 1077 mOriginalCount = c.getCount(); 1078 c.close(); 1079 } 1080 } 1081 1082 private boolean inScanDirectory(String path, String[] directories) { 1083 for (int i = 0; i < directories.length; i++) { 1084 String directory = directories[i]; 1085 if (path.startsWith(directory)) { 1086 return true; 1087 } 1088 } 1089 return false; 1090 } 1091 1092 private void pruneDeadThumbnailFiles() { 1093 HashSet<String> existingFiles = new HashSet<String>(); 1094 String directory = "/sdcard/DCIM/.thumbnails"; 1095 String [] files = (new File(directory)).list(); 1096 if (files == null) 1097 files = new String[0]; 1098 1099 for (int i = 0; i < files.length; i++) { 1100 String fullPathString = directory + "/" + files[i]; 1101 existingFiles.add(fullPathString); 1102 } 1103 1104 try { 1105 Cursor c = mMediaProvider.query( 1106 mThumbsUri, 1107 new String [] { "_data" }, 1108 null, 1109 null, 1110 null, null); 1111 Log.v(TAG, "pruneDeadThumbnailFiles... " + c); 1112 if (c != null && c.moveToFirst()) { 1113 do { 1114 String fullPathString = c.getString(0); 1115 existingFiles.remove(fullPathString); 1116 } while (c.moveToNext()); 1117 } 1118 1119 for (String fileToDelete : existingFiles) { 1120 if (false) 1121 Log.v(TAG, "fileToDelete is " + fileToDelete); 1122 try { 1123 (new File(fileToDelete)).delete(); 1124 } catch (SecurityException ex) { 1125 } 1126 } 1127 1128 Log.v(TAG, "/pruneDeadThumbnailFiles... " + c); 1129 if (c != null) { 1130 c.close(); 1131 } 1132 } catch (RemoteException e) { 1133 // We will soon be killed... 1134 } 1135 } 1136 1137 private void postscan(String[] directories) throws RemoteException { 1138 Iterator<FileCacheEntry> iterator = mFileCache.values().iterator(); 1139 1140 while (iterator.hasNext()) { 1141 FileCacheEntry entry = iterator.next(); 1142 String path = entry.mPath; 1143 1144 // remove database entries for files that no longer exist. 1145 boolean fileMissing = false; 1146 1147 if (!entry.mSeenInFileSystem && !MtpConstants.isAbstractObject(entry.mFormat)) { 1148 if (inScanDirectory(path, directories)) { 1149 // we didn't see this file in the scan directory. 1150 fileMissing = true; 1151 } else { 1152 // the file actually a directory or other abstract object 1153 // or is outside of our scan directory, 1154 // so we need to check for file existence here. 1155 File testFile = new File(path); 1156 if (!testFile.exists()) { 1157 fileMissing = true; 1158 } 1159 } 1160 } 1161 1162 if (fileMissing) { 1163 // Clear the file path to prevent the _DELETE_FILE database hook 1164 // in the media provider from deleting the file. 1165 // If the file is truly gone the delete is unnecessary, and we want to avoid 1166 // accidentally deleting files that are really there. 1167 ContentValues values = new ContentValues(); 1168 values.put(Files.FileColumns.DATA, ""); 1169 values.put(Files.FileColumns.DATE_MODIFIED, 0); 1170 mMediaProvider.update(ContentUris.withAppendedId(mFilesUri, entry.mRowId), 1171 values, null, null); 1172 1173 // do not delete missing playlists, since they may have been modified by the user. 1174 // the user can delete them in the media player instead. 1175 // instead, clear the path and lastModified fields in the row 1176 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 1177 int fileType = (mediaFileType == null ? 0 : mediaFileType.fileType); 1178 1179 if (!MediaFile.isPlayListFileType(fileType)) { 1180 mMediaProvider.delete(ContentUris.withAppendedId(mFilesUri, entry.mRowId), 1181 null, null); 1182 iterator.remove(); 1183 } 1184 } 1185 } 1186 1187 // handle playlists last, after we know what media files are on the storage. 1188 if (mProcessPlaylists) { 1189 processPlayLists(); 1190 } 1191 1192 if (mOriginalCount == 0 && mImagesUri.equals(Images.Media.getContentUri("external"))) 1193 pruneDeadThumbnailFiles(); 1194 1195 // allow GC to clean up 1196 mPlayLists = null; 1197 mFileCache = null; 1198 mMediaProvider = null; 1199 } 1200 1201 private void initialize(String volumeName) { 1202 mMediaProvider = mContext.getContentResolver().acquireProvider("media"); 1203 1204 mAudioUri = Audio.Media.getContentUri(volumeName); 1205 mVideoUri = Video.Media.getContentUri(volumeName); 1206 mImagesUri = Images.Media.getContentUri(volumeName); 1207 mThumbsUri = Images.Thumbnails.getContentUri(volumeName); 1208 mFilesUri = Files.getContentUri(volumeName); 1209 1210 if (!volumeName.equals("internal")) { 1211 // we only support playlists on external media 1212 mProcessPlaylists = true; 1213 mProcessGenres = true; 1214 mPlaylistsUri = Playlists.getContentUri(volumeName); 1215 1216 mCaseInsensitivePaths = true; 1217 } 1218 } 1219 1220 public void scanDirectories(String[] directories, String volumeName) { 1221 try { 1222 long start = System.currentTimeMillis(); 1223 initialize(volumeName); 1224 prescan(null, true); 1225 long prescan = System.currentTimeMillis(); 1226 1227 if (ENABLE_BULK_INSERTS) { 1228 // create MediaInserter for bulk inserts 1229 mMediaInserter = new MediaInserter(mMediaProvider, 500); 1230 } 1231 1232 for (int i = 0; i < directories.length; i++) { 1233 processDirectory(directories[i], mClient); 1234 } 1235 1236 if (ENABLE_BULK_INSERTS) { 1237 // flush remaining inserts 1238 mMediaInserter.flushAll(); 1239 mMediaInserter = null; 1240 } 1241 1242 long scan = System.currentTimeMillis(); 1243 postscan(directories); 1244 long end = System.currentTimeMillis(); 1245 1246 if (false) { 1247 Log.d(TAG, " prescan time: " + (prescan - start) + "ms\n"); 1248 Log.d(TAG, " scan time: " + (scan - prescan) + "ms\n"); 1249 Log.d(TAG, "postscan time: " + (end - scan) + "ms\n"); 1250 Log.d(TAG, " total time: " + (end - start) + "ms\n"); 1251 } 1252 } catch (SQLException e) { 1253 // this might happen if the SD card is removed while the media scanner is running 1254 Log.e(TAG, "SQLException in MediaScanner.scan()", e); 1255 } catch (UnsupportedOperationException e) { 1256 // this might happen if the SD card is removed while the media scanner is running 1257 Log.e(TAG, "UnsupportedOperationException in MediaScanner.scan()", e); 1258 } catch (RemoteException e) { 1259 Log.e(TAG, "RemoteException in MediaScanner.scan()", e); 1260 } 1261 } 1262 1263 // this function is used to scan a single file 1264 public Uri scanSingleFile(String path, String volumeName, String mimeType) { 1265 try { 1266 initialize(volumeName); 1267 prescan(path, true); 1268 1269 File file = new File(path); 1270 1271 // lastModified is in milliseconds on Files. 1272 long lastModifiedSeconds = file.lastModified() / 1000; 1273 1274 // always scan the file, so we can return the content://media Uri for existing files 1275 return mClient.doScanFile(path, mimeType, lastModifiedSeconds, file.length(), 1276 false, true, false); 1277 } catch (RemoteException e) { 1278 Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e); 1279 return null; 1280 } 1281 } 1282 1283 private static boolean isNoMediaFile(String path) { 1284 File file = new File(path); 1285 if (file.isDirectory()) return false; 1286 1287 // special case certain file names 1288 // I use regionMatches() instead of substring() below 1289 // to avoid memory allocation 1290 int lastSlash = path.lastIndexOf('/'); 1291 if (lastSlash >= 0 && lastSlash + 2 < path.length()) { 1292 // ignore those ._* files created by MacOS 1293 if (path.regionMatches(lastSlash + 1, "._", 0, 2)) { 1294 return true; 1295 } 1296 1297 // ignore album art files created by Windows Media Player: 1298 // Folder.jpg, AlbumArtSmall.jpg, AlbumArt_{...}_Large.jpg 1299 // and AlbumArt_{...}_Small.jpg 1300 if (path.regionMatches(true, path.length() - 4, ".jpg", 0, 4)) { 1301 if (path.regionMatches(true, lastSlash + 1, "AlbumArt_{", 0, 10) || 1302 path.regionMatches(true, lastSlash + 1, "AlbumArt.", 0, 9)) { 1303 return true; 1304 } 1305 int length = path.length() - lastSlash - 1; 1306 if ((length == 17 && path.regionMatches( 1307 true, lastSlash + 1, "AlbumArtSmall", 0, 13)) || 1308 (length == 10 1309 && path.regionMatches(true, lastSlash + 1, "Folder", 0, 6))) { 1310 return true; 1311 } 1312 } 1313 } 1314 return false; 1315 } 1316 1317 public static boolean isNoMediaPath(String path) { 1318 if (path == null) return false; 1319 1320 // return true if file or any parent directory has name starting with a dot 1321 if (path.indexOf("/.") >= 0) return true; 1322 1323 // now check to see if any parent directories have a ".nomedia" file 1324 // start from 1 so we don't bother checking in the root directory 1325 int offset = 1; 1326 while (offset >= 0) { 1327 int slashIndex = path.indexOf('/', offset); 1328 if (slashIndex > offset) { 1329 slashIndex++; // move past slash 1330 File file = new File(path.substring(0, slashIndex) + ".nomedia"); 1331 if (file.exists()) { 1332 // we have a .nomedia in one of the parent directories 1333 return true; 1334 } 1335 } 1336 offset = slashIndex; 1337 } 1338 return isNoMediaFile(path); 1339 } 1340 1341 public void scanMtpFile(String path, String volumeName, int objectHandle, int format) { 1342 initialize(volumeName); 1343 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 1344 int fileType = (mediaFileType == null ? 0 : mediaFileType.fileType); 1345 File file = new File(path); 1346 long lastModifiedSeconds = file.lastModified() / 1000; 1347 1348 if (!MediaFile.isAudioFileType(fileType) && !MediaFile.isVideoFileType(fileType) && 1349 !MediaFile.isImageFileType(fileType) && !MediaFile.isPlayListFileType(fileType)) { 1350 1351 // no need to use the media scanner, but we need to update last modified and file size 1352 ContentValues values = new ContentValues(); 1353 values.put(Files.FileColumns.SIZE, file.length()); 1354 values.put(Files.FileColumns.DATE_MODIFIED, lastModifiedSeconds); 1355 try { 1356 String[] whereArgs = new String[] { Integer.toString(objectHandle) }; 1357 mMediaProvider.update(Files.getMtpObjectsUri(volumeName), values, "_id=?", 1358 whereArgs); 1359 } catch (RemoteException e) { 1360 Log.e(TAG, "RemoteException in scanMtpFile", e); 1361 } 1362 return; 1363 } 1364 1365 mMtpObjectHandle = objectHandle; 1366 try { 1367 if (MediaFile.isPlayListFileType(fileType)) { 1368 // build file cache so we can look up tracks in the playlist 1369 prescan(null, true); 1370 1371 String key = path; 1372 if (mCaseInsensitivePaths) { 1373 key = path.toLowerCase(); 1374 } 1375 FileCacheEntry entry = mFileCache.get(key); 1376 if (entry != null) { 1377 processPlayList(entry); 1378 } 1379 } else { 1380 // MTP will create a file entry for us so we don't want to do it in prescan 1381 prescan(path, false); 1382 1383 // always scan the file, so we can return the content://media Uri for existing files 1384 mClient.doScanFile(path, mediaFileType.mimeType, lastModifiedSeconds, file.length(), 1385 (format == MtpConstants.FORMAT_ASSOCIATION), true, isNoMediaPath(path)); 1386 } 1387 } catch (RemoteException e) { 1388 Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e); 1389 } finally { 1390 mMtpObjectHandle = 0; 1391 } 1392 } 1393 1394 // returns the number of matching file/directory names, starting from the right 1395 private int matchPaths(String path1, String path2) { 1396 int result = 0; 1397 int end1 = path1.length(); 1398 int end2 = path2.length(); 1399 1400 while (end1 > 0 && end2 > 0) { 1401 int slash1 = path1.lastIndexOf('/', end1 - 1); 1402 int slash2 = path2.lastIndexOf('/', end2 - 1); 1403 int backSlash1 = path1.lastIndexOf('\\', end1 - 1); 1404 int backSlash2 = path2.lastIndexOf('\\', end2 - 1); 1405 int start1 = (slash1 > backSlash1 ? slash1 : backSlash1); 1406 int start2 = (slash2 > backSlash2 ? slash2 : backSlash2); 1407 if (start1 < 0) start1 = 0; else start1++; 1408 if (start2 < 0) start2 = 0; else start2++; 1409 int length = end1 - start1; 1410 if (end2 - start2 != length) break; 1411 if (path1.regionMatches(true, start1, path2, start2, length)) { 1412 result++; 1413 end1 = start1 - 1; 1414 end2 = start2 - 1; 1415 } else break; 1416 } 1417 1418 return result; 1419 } 1420 1421 private boolean addPlayListEntry(String entry, String playListDirectory, 1422 Uri uri, ContentValues values, int index) { 1423 1424 // watch for trailing whitespace 1425 int entryLength = entry.length(); 1426 while (entryLength > 0 && Character.isWhitespace(entry.charAt(entryLength - 1))) entryLength--; 1427 // path should be longer than 3 characters. 1428 // avoid index out of bounds errors below by returning here. 1429 if (entryLength < 3) return false; 1430 if (entryLength < entry.length()) entry = entry.substring(0, entryLength); 1431 1432 // does entry appear to be an absolute path? 1433 // look for Unix or DOS absolute paths 1434 char ch1 = entry.charAt(0); 1435 boolean fullPath = (ch1 == '/' || 1436 (Character.isLetter(ch1) && entry.charAt(1) == ':' && entry.charAt(2) == '\\')); 1437 // if we have a relative path, combine entry with playListDirectory 1438 if (!fullPath) 1439 entry = playListDirectory + entry; 1440 1441 //FIXME - should we look for "../" within the path? 1442 1443 // best matching MediaFile for the play list entry 1444 FileCacheEntry bestMatch = null; 1445 1446 // number of rightmost file/directory names for bestMatch 1447 int bestMatchLength = 0; 1448 1449 Iterator<FileCacheEntry> iterator = mFileCache.values().iterator(); 1450 while (iterator.hasNext()) { 1451 FileCacheEntry cacheEntry = iterator.next(); 1452 String path = cacheEntry.mPath; 1453 1454 if (path.equalsIgnoreCase(entry)) { 1455 bestMatch = cacheEntry; 1456 break; // don't bother continuing search 1457 } 1458 1459 int matchLength = matchPaths(path, entry); 1460 if (matchLength > bestMatchLength) { 1461 bestMatch = cacheEntry; 1462 bestMatchLength = matchLength; 1463 } 1464 } 1465 1466 if (bestMatch == null) { 1467 return false; 1468 } 1469 1470 try { 1471 // check rowid is set. Rowid may be missing if it is inserted by bulkInsert(). 1472 if (bestMatch.mRowId == 0) { 1473 Cursor c = mMediaProvider.query(mAudioUri, ID_PROJECTION, 1474 MediaStore.Files.FileColumns.DATA + "=?", 1475 new String[] { bestMatch.mPath }, null, null); 1476 if (c != null) { 1477 if (c.moveToNext()) { 1478 bestMatch.mRowId = c.getLong(0); 1479 } 1480 c.close(); 1481 } 1482 if (bestMatch.mRowId == 0) { 1483 return false; 1484 } 1485 } 1486 // OK, now we are ready to add this to the database 1487 values.clear(); 1488 values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, Integer.valueOf(index)); 1489 values.put(MediaStore.Audio.Playlists.Members.AUDIO_ID, Long.valueOf(bestMatch.mRowId)); 1490 mMediaProvider.insert(uri, values); 1491 } catch (RemoteException e) { 1492 Log.e(TAG, "RemoteException in MediaScanner.addPlayListEntry()", e); 1493 return false; 1494 } 1495 1496 return true; 1497 } 1498 1499 private void processM3uPlayList(String path, String playListDirectory, Uri uri, ContentValues values) { 1500 BufferedReader reader = null; 1501 try { 1502 File f = new File(path); 1503 if (f.exists()) { 1504 reader = new BufferedReader( 1505 new InputStreamReader(new FileInputStream(f)), 8192); 1506 String line = reader.readLine(); 1507 int index = 0; 1508 while (line != null) { 1509 // ignore comment lines, which begin with '#' 1510 if (line.length() > 0 && line.charAt(0) != '#') { 1511 values.clear(); 1512 if (addPlayListEntry(line, playListDirectory, uri, values, index)) 1513 index++; 1514 } 1515 line = reader.readLine(); 1516 } 1517 } 1518 } catch (IOException e) { 1519 Log.e(TAG, "IOException in MediaScanner.processM3uPlayList()", e); 1520 } finally { 1521 try { 1522 if (reader != null) 1523 reader.close(); 1524 } catch (IOException e) { 1525 Log.e(TAG, "IOException in MediaScanner.processM3uPlayList()", e); 1526 } 1527 } 1528 } 1529 1530 private void processPlsPlayList(String path, String playListDirectory, Uri uri, ContentValues values) { 1531 BufferedReader reader = null; 1532 try { 1533 File f = new File(path); 1534 if (f.exists()) { 1535 reader = new BufferedReader( 1536 new InputStreamReader(new FileInputStream(f)), 8192); 1537 String line = reader.readLine(); 1538 int index = 0; 1539 while (line != null) { 1540 // ignore comment lines, which begin with '#' 1541 if (line.startsWith("File")) { 1542 int equals = line.indexOf('='); 1543 if (equals > 0) { 1544 values.clear(); 1545 if (addPlayListEntry(line.substring(equals + 1), playListDirectory, uri, values, index)) 1546 index++; 1547 } 1548 } 1549 line = reader.readLine(); 1550 } 1551 } 1552 } catch (IOException e) { 1553 Log.e(TAG, "IOException in MediaScanner.processPlsPlayList()", e); 1554 } finally { 1555 try { 1556 if (reader != null) 1557 reader.close(); 1558 } catch (IOException e) { 1559 Log.e(TAG, "IOException in MediaScanner.processPlsPlayList()", e); 1560 } 1561 } 1562 } 1563 1564 class WplHandler implements ElementListener { 1565 1566 final ContentHandler handler; 1567 String playListDirectory; 1568 Uri uri; 1569 ContentValues values = new ContentValues(); 1570 int index = 0; 1571 1572 public WplHandler(String playListDirectory, Uri uri) { 1573 this.playListDirectory = playListDirectory; 1574 this.uri = uri; 1575 1576 RootElement root = new RootElement("smil"); 1577 Element body = root.getChild("body"); 1578 Element seq = body.getChild("seq"); 1579 Element media = seq.getChild("media"); 1580 media.setElementListener(this); 1581 1582 this.handler = root.getContentHandler(); 1583 } 1584 1585 public void start(Attributes attributes) { 1586 String path = attributes.getValue("", "src"); 1587 if (path != null) { 1588 values.clear(); 1589 if (addPlayListEntry(path, playListDirectory, uri, values, index)) { 1590 index++; 1591 } 1592 } 1593 } 1594 1595 public void end() { 1596 } 1597 1598 ContentHandler getContentHandler() { 1599 return handler; 1600 } 1601 } 1602 1603 private void processWplPlayList(String path, String playListDirectory, Uri uri) { 1604 FileInputStream fis = null; 1605 try { 1606 File f = new File(path); 1607 if (f.exists()) { 1608 fis = new FileInputStream(f); 1609 1610 Xml.parse(fis, Xml.findEncodingByName("UTF-8"), new WplHandler(playListDirectory, uri).getContentHandler()); 1611 } 1612 } catch (SAXException e) { 1613 e.printStackTrace(); 1614 } catch (IOException e) { 1615 e.printStackTrace(); 1616 } finally { 1617 try { 1618 if (fis != null) 1619 fis.close(); 1620 } catch (IOException e) { 1621 Log.e(TAG, "IOException in MediaScanner.processWplPlayList()", e); 1622 } 1623 } 1624 } 1625 1626 private void processPlayList(FileCacheEntry entry) throws RemoteException { 1627 String path = entry.mPath; 1628 ContentValues values = new ContentValues(); 1629 int lastSlash = path.lastIndexOf('/'); 1630 if (lastSlash < 0) throw new IllegalArgumentException("bad path " + path); 1631 Uri uri, membersUri; 1632 long rowId = entry.mRowId; 1633 1634 // make sure we have a name 1635 String name = values.getAsString(MediaStore.Audio.Playlists.NAME); 1636 if (name == null) { 1637 name = values.getAsString(MediaStore.MediaColumns.TITLE); 1638 if (name == null) { 1639 // extract name from file name 1640 int lastDot = path.lastIndexOf('.'); 1641 name = (lastDot < 0 ? path.substring(lastSlash + 1) 1642 : path.substring(lastSlash + 1, lastDot)); 1643 } 1644 } 1645 1646 values.put(MediaStore.Audio.Playlists.NAME, name); 1647 values.put(MediaStore.Audio.Playlists.DATE_MODIFIED, entry.mLastModified); 1648 1649 if (rowId == 0) { 1650 values.put(MediaStore.Audio.Playlists.DATA, path); 1651 uri = mMediaProvider.insert(mPlaylistsUri, values); 1652 rowId = ContentUris.parseId(uri); 1653 membersUri = Uri.withAppendedPath(uri, Playlists.Members.CONTENT_DIRECTORY); 1654 } else { 1655 uri = ContentUris.withAppendedId(mPlaylistsUri, rowId); 1656 mMediaProvider.update(uri, values, null, null); 1657 1658 // delete members of existing playlist 1659 membersUri = Uri.withAppendedPath(uri, Playlists.Members.CONTENT_DIRECTORY); 1660 mMediaProvider.delete(membersUri, null, null); 1661 } 1662 1663 String playListDirectory = path.substring(0, lastSlash + 1); 1664 MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path); 1665 int fileType = (mediaFileType == null ? 0 : mediaFileType.fileType); 1666 1667 if (fileType == MediaFile.FILE_TYPE_M3U) { 1668 processM3uPlayList(path, playListDirectory, membersUri, values); 1669 } else if (fileType == MediaFile.FILE_TYPE_PLS) { 1670 processPlsPlayList(path, playListDirectory, membersUri, values); 1671 } else if (fileType == MediaFile.FILE_TYPE_WPL) { 1672 processWplPlayList(path, playListDirectory, membersUri); 1673 } 1674 } 1675 1676 private void processPlayLists() throws RemoteException { 1677 Iterator<FileCacheEntry> iterator = mPlayLists.iterator(); 1678 while (iterator.hasNext()) { 1679 FileCacheEntry entry = iterator.next(); 1680 // only process playlist files if they are new or have been modified since the last scan 1681 if (entry.mLastModifiedChanged) { 1682 processPlayList(entry); 1683 } 1684 } 1685 } 1686 1687 private native void processDirectory(String path, MediaScannerClient client); 1688 private native void processFile(String path, String mimeType, MediaScannerClient client); 1689 public native void setLocale(String locale); 1690 1691 public native byte[] extractAlbumArt(FileDescriptor fd); 1692 1693 private static native final void native_init(); 1694 private native final void native_setup(); 1695 private native final void native_finalize(); 1696 1697 /** 1698 * Releases resouces associated with this MediaScanner object. 1699 * It is considered good practice to call this method when 1700 * one is done using the MediaScanner object. After this method 1701 * is called, the MediaScanner object can no longer be used. 1702 */ 1703 public void release() { 1704 native_finalize(); 1705 } 1706 1707 @Override 1708 protected void finalize() { 1709 mContext.getContentResolver().releaseProvider(mMediaProvider); 1710 native_finalize(); 1711 } 1712} 1713