Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 17 | package android.mtp; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 18 | |
| 19 | import android.content.IContentProvider; |
| 20 | import android.database.Cursor; |
| 21 | import android.net.Uri; |
| 22 | import android.os.RemoteException; |
| 23 | import android.provider.MediaStore; |
| 24 | import android.provider.MediaStore.Audio; |
| 25 | import android.provider.MediaStore.Files; |
| 26 | import android.provider.MediaStore.Images; |
| 27 | import android.provider.MediaStore.MediaColumns; |
| 28 | import android.util.Log; |
| 29 | |
| 30 | import java.util.ArrayList; |
| 31 | |
| 32 | class MtpPropertyGroup { |
| 33 | |
| 34 | private static final String TAG = "MtpPropertyGroup"; |
| 35 | |
| 36 | private class Property { |
| 37 | // MTP property code |
| 38 | int code; |
| 39 | // MTP data type |
| 40 | int type; |
| 41 | // column index for our query |
| 42 | int column; |
| 43 | |
| 44 | Property(int code, int type, int column) { |
| 45 | this.code = code; |
| 46 | this.type = type; |
| 47 | this.column = column; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | private final MtpDatabase mDatabase; |
| 52 | private final IContentProvider mProvider; |
| 53 | private final String mVolumeName; |
| 54 | private final Uri mUri; |
| 55 | |
| 56 | // list of all properties in this group |
| 57 | private final Property[] mProperties; |
| 58 | |
| 59 | // list of columns for database query |
| 60 | private String[] mColumns; |
| 61 | |
| 62 | private static final String ID_WHERE = Files.FileColumns._ID + "=?"; |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 63 | private static final String FORMAT_WHERE = Files.FileColumns.FORMAT + "=?"; |
| 64 | private static final String ID_FORMAT_WHERE = ID_WHERE + " AND " + FORMAT_WHERE; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 65 | private static final String PARENT_WHERE = Files.FileColumns.PARENT + "=?"; |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 66 | private static final String PARENT_FORMAT_WHERE = PARENT_WHERE + " AND " + FORMAT_WHERE; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 67 | // constructs a property group for a list of properties |
| 68 | public MtpPropertyGroup(MtpDatabase database, IContentProvider provider, String volume, |
| 69 | int[] properties) { |
| 70 | mDatabase = database; |
| 71 | mProvider = provider; |
| 72 | mVolumeName = volume; |
| 73 | mUri = Files.getMtpObjectsUri(volume); |
| 74 | |
| 75 | int count = properties.length; |
| 76 | ArrayList<String> columns = new ArrayList<String>(count); |
| 77 | columns.add(Files.FileColumns._ID); |
| 78 | |
| 79 | mProperties = new Property[count]; |
| 80 | for (int i = 0; i < count; i++) { |
| 81 | mProperties[i] = createProperty(properties[i], columns); |
| 82 | } |
| 83 | count = columns.size(); |
| 84 | mColumns = new String[count]; |
| 85 | for (int i = 0; i < count; i++) { |
| 86 | mColumns[i] = columns.get(i); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | private Property createProperty(int code, ArrayList<String> columns) { |
| 91 | String column = null; |
| 92 | int type; |
| 93 | |
| 94 | switch (code) { |
| 95 | case MtpConstants.PROPERTY_STORAGE_ID: |
Mike Lockwood | b239b683 | 2011-04-05 10:21:27 -0400 | [diff] [blame] | 96 | column = Files.FileColumns.STORAGE_ID; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 97 | type = MtpConstants.TYPE_UINT32; |
| 98 | break; |
| 99 | case MtpConstants.PROPERTY_OBJECT_FORMAT: |
| 100 | column = Files.FileColumns.FORMAT; |
| 101 | type = MtpConstants.TYPE_UINT16; |
| 102 | break; |
| 103 | case MtpConstants.PROPERTY_PROTECTION_STATUS: |
| 104 | // protection status is always 0 |
| 105 | type = MtpConstants.TYPE_UINT16; |
| 106 | break; |
| 107 | case MtpConstants.PROPERTY_OBJECT_SIZE: |
| 108 | column = Files.FileColumns.SIZE; |
| 109 | type = MtpConstants.TYPE_UINT64; |
| 110 | break; |
| 111 | case MtpConstants.PROPERTY_OBJECT_FILE_NAME: |
| 112 | column = Files.FileColumns.DATA; |
| 113 | type = MtpConstants.TYPE_STR; |
| 114 | break; |
| 115 | case MtpConstants.PROPERTY_NAME: |
| 116 | column = MediaColumns.TITLE; |
| 117 | type = MtpConstants.TYPE_STR; |
| 118 | break; |
| 119 | case MtpConstants.PROPERTY_DATE_MODIFIED: |
| 120 | column = Files.FileColumns.DATE_MODIFIED; |
| 121 | type = MtpConstants.TYPE_STR; |
| 122 | break; |
| 123 | case MtpConstants.PROPERTY_DATE_ADDED: |
| 124 | column = Files.FileColumns.DATE_ADDED; |
| 125 | type = MtpConstants.TYPE_STR; |
| 126 | break; |
| 127 | case MtpConstants.PROPERTY_ORIGINAL_RELEASE_DATE: |
| 128 | column = Audio.AudioColumns.YEAR; |
| 129 | type = MtpConstants.TYPE_STR; |
| 130 | break; |
| 131 | case MtpConstants.PROPERTY_PARENT_OBJECT: |
| 132 | column = Files.FileColumns.PARENT; |
| 133 | type = MtpConstants.TYPE_UINT32; |
| 134 | break; |
| 135 | case MtpConstants.PROPERTY_PERSISTENT_UID: |
| 136 | // PUID is concatenation of storageID and object handle |
Mike Lockwood | b239b683 | 2011-04-05 10:21:27 -0400 | [diff] [blame] | 137 | column = Files.FileColumns.STORAGE_ID; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 138 | type = MtpConstants.TYPE_UINT128; |
| 139 | break; |
| 140 | case MtpConstants.PROPERTY_DURATION: |
| 141 | column = Audio.AudioColumns.DURATION; |
| 142 | type = MtpConstants.TYPE_UINT32; |
| 143 | break; |
| 144 | case MtpConstants.PROPERTY_TRACK: |
| 145 | column = Audio.AudioColumns.TRACK; |
| 146 | type = MtpConstants.TYPE_UINT16; |
| 147 | break; |
| 148 | case MtpConstants.PROPERTY_DISPLAY_NAME: |
| 149 | column = MediaColumns.DISPLAY_NAME; |
| 150 | type = MtpConstants.TYPE_STR; |
| 151 | break; |
| 152 | case MtpConstants.PROPERTY_ARTIST: |
| 153 | type = MtpConstants.TYPE_STR; |
| 154 | break; |
| 155 | case MtpConstants.PROPERTY_ALBUM_NAME: |
| 156 | type = MtpConstants.TYPE_STR; |
| 157 | break; |
| 158 | case MtpConstants.PROPERTY_ALBUM_ARTIST: |
| 159 | column = Audio.AudioColumns.ALBUM_ARTIST; |
| 160 | type = MtpConstants.TYPE_STR; |
| 161 | break; |
| 162 | case MtpConstants.PROPERTY_GENRE: |
| 163 | // genre requires a special query |
| 164 | type = MtpConstants.TYPE_STR; |
| 165 | break; |
| 166 | case MtpConstants.PROPERTY_COMPOSER: |
| 167 | column = Audio.AudioColumns.COMPOSER; |
| 168 | type = MtpConstants.TYPE_STR; |
| 169 | break; |
| 170 | case MtpConstants.PROPERTY_DESCRIPTION: |
| 171 | column = Images.ImageColumns.DESCRIPTION; |
| 172 | type = MtpConstants.TYPE_STR; |
| 173 | break; |
| 174 | default: |
| 175 | type = MtpConstants.TYPE_UNDEFINED; |
| 176 | Log.e(TAG, "unsupported property " + code); |
| 177 | break; |
| 178 | } |
| 179 | |
| 180 | if (column != null) { |
| 181 | columns.add(column); |
| 182 | return new Property(code, type, columns.size() - 1); |
| 183 | } else { |
| 184 | return new Property(code, type, -1); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | private String queryString(int id, String column) { |
| 189 | Cursor c = null; |
| 190 | try { |
| 191 | // for now we are only reading properties from the "objects" table |
| 192 | c = mProvider.query(mUri, |
| 193 | new String [] { Files.FileColumns._ID, column }, |
Jeff Brown | 75ea64f | 2012-01-25 19:37:13 -0800 | [diff] [blame] | 194 | ID_WHERE, new String[] { Integer.toString(id) }, null, null); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 195 | if (c != null && c.moveToNext()) { |
| 196 | return c.getString(1); |
| 197 | } else { |
| 198 | return ""; |
| 199 | } |
| 200 | } catch (Exception e) { |
| 201 | return null; |
| 202 | } finally { |
| 203 | if (c != null) { |
| 204 | c.close(); |
| 205 | } |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | private String queryAudio(int id, String column) { |
| 210 | Cursor c = null; |
| 211 | try { |
| 212 | c = mProvider.query(Audio.Media.getContentUri(mVolumeName), |
| 213 | new String [] { Files.FileColumns._ID, column }, |
Jeff Brown | 75ea64f | 2012-01-25 19:37:13 -0800 | [diff] [blame] | 214 | ID_WHERE, new String[] { Integer.toString(id) }, null, null); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 215 | if (c != null && c.moveToNext()) { |
| 216 | return c.getString(1); |
| 217 | } else { |
| 218 | return ""; |
| 219 | } |
| 220 | } catch (Exception e) { |
| 221 | return null; |
| 222 | } finally { |
| 223 | if (c != null) { |
| 224 | c.close(); |
| 225 | } |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | private String queryGenre(int id) { |
| 230 | Cursor c = null; |
| 231 | try { |
| 232 | Uri uri = Audio.Genres.getContentUriForAudioId(mVolumeName, id); |
| 233 | c = mProvider.query(uri, |
| 234 | new String [] { Files.FileColumns._ID, Audio.GenresColumns.NAME }, |
Jeff Brown | 75ea64f | 2012-01-25 19:37:13 -0800 | [diff] [blame] | 235 | null, null, null, null); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 236 | if (c != null && c.moveToNext()) { |
| 237 | return c.getString(1); |
| 238 | } else { |
| 239 | return ""; |
| 240 | } |
| 241 | } catch (Exception e) { |
| 242 | Log.e(TAG, "queryGenre exception", e); |
| 243 | return null; |
| 244 | } finally { |
| 245 | if (c != null) { |
| 246 | c.close(); |
| 247 | } |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | private Long queryLong(int id, String column) { |
| 252 | Cursor c = null; |
| 253 | try { |
| 254 | // for now we are only reading properties from the "objects" table |
| 255 | c = mProvider.query(mUri, |
| 256 | new String [] { Files.FileColumns._ID, column }, |
Jeff Brown | 75ea64f | 2012-01-25 19:37:13 -0800 | [diff] [blame] | 257 | ID_WHERE, new String[] { Integer.toString(id) }, null, null); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 258 | if (c != null && c.moveToNext()) { |
| 259 | return new Long(c.getLong(1)); |
| 260 | } |
| 261 | } catch (Exception e) { |
| 262 | } finally { |
| 263 | if (c != null) { |
| 264 | c.close(); |
| 265 | } |
| 266 | } |
| 267 | return null; |
| 268 | } |
| 269 | |
| 270 | private static String nameFromPath(String path) { |
| 271 | // extract name from full path |
| 272 | int start = 0; |
| 273 | int lastSlash = path.lastIndexOf('/'); |
| 274 | if (lastSlash >= 0) { |
| 275 | start = lastSlash + 1; |
| 276 | } |
| 277 | int end = path.length(); |
| 278 | if (end - start > 255) { |
| 279 | end = start + 255; |
| 280 | } |
| 281 | return path.substring(start, end); |
| 282 | } |
| 283 | |
Mike Lockwood | b239b683 | 2011-04-05 10:21:27 -0400 | [diff] [blame] | 284 | MtpPropertyList getPropertyList(int handle, int format, int depth) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 285 | //Log.d(TAG, "getPropertyList handle: " + handle + " format: " + format + " depth: " + depth); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 286 | if (depth > 1) { |
| 287 | // we only support depth 0 and 1 |
| 288 | // depth 0: single object, depth 1: immediate children |
| 289 | return new MtpPropertyList(0, MtpConstants.RESPONSE_SPECIFICATION_BY_DEPTH_UNSUPPORTED); |
| 290 | } |
| 291 | |
| 292 | String where; |
| 293 | String[] whereArgs; |
| 294 | if (format == 0) { |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 295 | if (handle == 0xFFFFFFFF) { |
| 296 | // select all objects |
| 297 | where = null; |
| 298 | whereArgs = null; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 299 | } else { |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 300 | whereArgs = new String[] { Integer.toString(handle) }; |
| 301 | if (depth == 1) { |
| 302 | where = PARENT_WHERE; |
| 303 | } else { |
| 304 | where = ID_WHERE; |
| 305 | } |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 306 | } |
| 307 | } else { |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 308 | if (handle == 0xFFFFFFFF) { |
| 309 | // select all objects with given format |
| 310 | where = FORMAT_WHERE; |
| 311 | whereArgs = new String[] { Integer.toString(format) }; |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 312 | } else { |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 313 | whereArgs = new String[] { Integer.toString(handle), Integer.toString(format) }; |
| 314 | if (depth == 1) { |
| 315 | where = PARENT_FORMAT_WHERE; |
| 316 | } else { |
| 317 | where = ID_FORMAT_WHERE; |
| 318 | } |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 319 | } |
| 320 | } |
| 321 | |
| 322 | Cursor c = null; |
| 323 | try { |
| 324 | // don't query if not necessary |
Mike Lockwood | 4356d81 | 2011-02-07 13:40:21 -0500 | [diff] [blame] | 325 | if (depth > 0 || handle == 0xFFFFFFFF || mColumns.length > 1) { |
Jeff Brown | 75ea64f | 2012-01-25 19:37:13 -0800 | [diff] [blame] | 326 | c = mProvider.query(mUri, mColumns, where, whereArgs, null, null); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 327 | if (c == null) { |
| 328 | return new MtpPropertyList(0, MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | int count = (c == null ? 1 : c.getCount()); |
| 333 | MtpPropertyList result = new MtpPropertyList(count * mProperties.length, |
| 334 | MtpConstants.RESPONSE_OK); |
| 335 | |
| 336 | // iterate over all objects in the query |
| 337 | for (int objectIndex = 0; objectIndex < count; objectIndex++) { |
| 338 | if (c != null) { |
| 339 | c.moveToNext(); |
Mike Lockwood | fd22edc | 2011-02-08 21:45:22 -0500 | [diff] [blame] | 340 | handle = (int)c.getLong(0); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 341 | } |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 342 | |
| 343 | // iterate over all properties in the query for the given object |
| 344 | for (int propertyIndex = 0; propertyIndex < mProperties.length; propertyIndex++) { |
| 345 | Property property = mProperties[propertyIndex]; |
| 346 | int propertyCode = property.code; |
| 347 | int column = property.column; |
| 348 | |
| 349 | // handle some special cases |
| 350 | switch (propertyCode) { |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 351 | case MtpConstants.PROPERTY_PROTECTION_STATUS: |
| 352 | // protection status is always 0 |
| 353 | result.append(handle, propertyCode, MtpConstants.TYPE_UINT16, 0); |
| 354 | break; |
| 355 | case MtpConstants.PROPERTY_OBJECT_FILE_NAME: |
| 356 | // special case - need to extract file name from full path |
| 357 | String value = c.getString(column); |
| 358 | if (value != null) { |
| 359 | result.append(handle, propertyCode, nameFromPath(value)); |
| 360 | } else { |
| 361 | result.setResult(MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); |
| 362 | } |
| 363 | break; |
| 364 | case MtpConstants.PROPERTY_NAME: |
| 365 | // first try title |
| 366 | String name = c.getString(column); |
| 367 | // then try name |
| 368 | if (name == null) { |
| 369 | name = queryString(handle, Audio.PlaylistsColumns.NAME); |
| 370 | } |
| 371 | // if title and name fail, extract name from full path |
| 372 | if (name == null) { |
| 373 | name = queryString(handle, Files.FileColumns.DATA); |
| 374 | if (name != null) { |
| 375 | name = nameFromPath(name); |
| 376 | } |
| 377 | } |
| 378 | if (name != null) { |
| 379 | result.append(handle, propertyCode, name); |
| 380 | } else { |
| 381 | result.setResult(MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); |
| 382 | } |
| 383 | break; |
| 384 | case MtpConstants.PROPERTY_DATE_MODIFIED: |
| 385 | case MtpConstants.PROPERTY_DATE_ADDED: |
| 386 | // convert from seconds to DateTime |
| 387 | result.append(handle, propertyCode, format_date_time(c.getInt(column))); |
| 388 | break; |
| 389 | case MtpConstants.PROPERTY_ORIGINAL_RELEASE_DATE: |
| 390 | // release date is stored internally as just the year |
| 391 | int year = c.getInt(column); |
| 392 | String dateTime = Integer.toString(year) + "0101T000000"; |
| 393 | result.append(handle, propertyCode, dateTime); |
| 394 | break; |
| 395 | case MtpConstants.PROPERTY_PERSISTENT_UID: |
| 396 | // PUID is concatenation of storageID and object handle |
Mike Lockwood | b239b683 | 2011-04-05 10:21:27 -0400 | [diff] [blame] | 397 | long puid = c.getLong(column); |
Mike Lockwood | 7d7fb63 | 2010-12-01 18:46:23 -0500 | [diff] [blame] | 398 | puid <<= 32; |
| 399 | puid += handle; |
| 400 | result.append(handle, propertyCode, MtpConstants.TYPE_UINT128, puid); |
| 401 | break; |
| 402 | case MtpConstants.PROPERTY_TRACK: |
| 403 | result.append(handle, propertyCode, MtpConstants.TYPE_UINT16, |
| 404 | c.getInt(column) % 1000); |
| 405 | break; |
| 406 | case MtpConstants.PROPERTY_ARTIST: |
| 407 | result.append(handle, propertyCode, |
| 408 | queryAudio(handle, Audio.AudioColumns.ARTIST)); |
| 409 | break; |
| 410 | case MtpConstants.PROPERTY_ALBUM_NAME: |
| 411 | result.append(handle, propertyCode, |
| 412 | queryAudio(handle, Audio.AudioColumns.ALBUM)); |
| 413 | break; |
| 414 | case MtpConstants.PROPERTY_GENRE: |
| 415 | String genre = queryGenre(handle); |
| 416 | if (genre != null) { |
| 417 | result.append(handle, propertyCode, genre); |
| 418 | } else { |
| 419 | result.setResult(MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); |
| 420 | } |
| 421 | break; |
| 422 | default: |
| 423 | if (property.type == MtpConstants.TYPE_STR) { |
| 424 | result.append(handle, propertyCode, c.getString(column)); |
| 425 | } else if (property.type == MtpConstants.TYPE_UNDEFINED) { |
| 426 | result.append(handle, propertyCode, property.type, 0); |
| 427 | } else { |
| 428 | result.append(handle, propertyCode, property.type, |
| 429 | c.getLong(column)); |
| 430 | } |
| 431 | break; |
| 432 | } |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | return result; |
| 437 | } catch (RemoteException e) { |
| 438 | return new MtpPropertyList(0, MtpConstants.RESPONSE_GENERAL_ERROR); |
| 439 | } finally { |
| 440 | if (c != null) { |
| 441 | c.close(); |
| 442 | } |
| 443 | } |
| 444 | // impossible to get here, so no return statement |
| 445 | } |
| 446 | |
| 447 | private native String format_date_time(long seconds); |
| 448 | } |