diff options
Diffstat (limited to 'android/mtp/MtpPropertyGroup.java')
| -rw-r--r-- | android/mtp/MtpPropertyGroup.java | 404 |
1 files changed, 139 insertions, 265 deletions
diff --git a/android/mtp/MtpPropertyGroup.java b/android/mtp/MtpPropertyGroup.java index dea30083..77d0f34f 100644 --- a/android/mtp/MtpPropertyGroup.java +++ b/android/mtp/MtpPropertyGroup.java @@ -23,22 +23,21 @@ import android.os.RemoteException; import android.provider.MediaStore.Audio; import android.provider.MediaStore.Files; import android.provider.MediaStore.Images; -import android.provider.MediaStore.MediaColumns; import android.util.Log; import java.util.ArrayList; +/** + * MtpPropertyGroup represents a list of MTP properties. + * {@hide} + */ class MtpPropertyGroup { - - private static final String TAG = "MtpPropertyGroup"; + private static final String TAG = MtpPropertyGroup.class.getSimpleName(); private class Property { - // MTP property code - int code; - // MTP data type - int type; - // column index for our query - int column; + int code; + int type; + int column; Property(int code, int type, int column) { this.code = code; @@ -47,32 +46,26 @@ class MtpPropertyGroup { } } - private final MtpDatabase mDatabase; private final ContentProviderClient mProvider; private final String mVolumeName; private final Uri mUri; // list of all properties in this group - private final Property[] mProperties; + private final Property[] mProperties; // list of columns for database query - private String[] mColumns; + private String[] mColumns; + + private static final String PATH_WHERE = Files.FileColumns.DATA + "=?"; - private static final String ID_WHERE = Files.FileColumns._ID + "=?"; - private static final String FORMAT_WHERE = Files.FileColumns.FORMAT + "=?"; - private static final String ID_FORMAT_WHERE = ID_WHERE + " AND " + FORMAT_WHERE; - private static final String PARENT_WHERE = Files.FileColumns.PARENT + "=?"; - private static final String PARENT_FORMAT_WHERE = PARENT_WHERE + " AND " + FORMAT_WHERE; // constructs a property group for a list of properties - public MtpPropertyGroup(MtpDatabase database, ContentProviderClient provider, String volumeName, - int[] properties) { - mDatabase = database; + public MtpPropertyGroup(ContentProviderClient provider, String volumeName, int[] properties) { mProvider = provider; mVolumeName = volumeName; mUri = Files.getMtpObjectsUri(volumeName); int count = properties.length; - ArrayList<String> columns = new ArrayList<String>(count); + ArrayList<String> columns = new ArrayList<>(count); columns.add(Files.FileColumns._ID); mProperties = new Property[count]; @@ -90,37 +83,29 @@ class MtpPropertyGroup { String column = null; int type; - switch (code) { + switch (code) { case MtpConstants.PROPERTY_STORAGE_ID: - column = Files.FileColumns.STORAGE_ID; type = MtpConstants.TYPE_UINT32; break; - case MtpConstants.PROPERTY_OBJECT_FORMAT: - column = Files.FileColumns.FORMAT; + case MtpConstants.PROPERTY_OBJECT_FORMAT: type = MtpConstants.TYPE_UINT16; break; case MtpConstants.PROPERTY_PROTECTION_STATUS: - // protection status is always 0 type = MtpConstants.TYPE_UINT16; break; case MtpConstants.PROPERTY_OBJECT_SIZE: - column = Files.FileColumns.SIZE; type = MtpConstants.TYPE_UINT64; break; case MtpConstants.PROPERTY_OBJECT_FILE_NAME: - column = Files.FileColumns.DATA; type = MtpConstants.TYPE_STR; break; case MtpConstants.PROPERTY_NAME: - column = MediaColumns.TITLE; type = MtpConstants.TYPE_STR; break; case MtpConstants.PROPERTY_DATE_MODIFIED: - column = Files.FileColumns.DATE_MODIFIED; type = MtpConstants.TYPE_STR; break; case MtpConstants.PROPERTY_DATE_ADDED: - column = Files.FileColumns.DATE_ADDED; type = MtpConstants.TYPE_STR; break; case MtpConstants.PROPERTY_ORIGINAL_RELEASE_DATE: @@ -128,12 +113,9 @@ class MtpPropertyGroup { type = MtpConstants.TYPE_STR; break; case MtpConstants.PROPERTY_PARENT_OBJECT: - column = Files.FileColumns.PARENT; type = MtpConstants.TYPE_UINT32; break; case MtpConstants.PROPERTY_PERSISTENT_UID: - // PUID is concatenation of storageID and object handle - column = Files.FileColumns.STORAGE_ID; type = MtpConstants.TYPE_UINT128; break; case MtpConstants.PROPERTY_DURATION: @@ -145,7 +127,6 @@ class MtpPropertyGroup { type = MtpConstants.TYPE_UINT16; break; case MtpConstants.PROPERTY_DISPLAY_NAME: - column = MediaColumns.DISPLAY_NAME; type = MtpConstants.TYPE_STR; break; case MtpConstants.PROPERTY_ARTIST: @@ -195,40 +176,19 @@ class MtpPropertyGroup { } } - private String queryString(int id, String column) { - Cursor c = null; - try { - // for now we are only reading properties from the "objects" table - c = mProvider.query(mUri, - new String [] { Files.FileColumns._ID, column }, - ID_WHERE, new String[] { Integer.toString(id) }, null, null); - if (c != null && c.moveToNext()) { - return c.getString(1); - } else { - return ""; - } - } catch (Exception e) { - return null; - } finally { - if (c != null) { - c.close(); - } - } - } - - private String queryAudio(int id, String column) { + private String queryAudio(String path, String column) { Cursor c = null; try { c = mProvider.query(Audio.Media.getContentUri(mVolumeName), - new String [] { Files.FileColumns._ID, column }, - ID_WHERE, new String[] { Integer.toString(id) }, null, null); + new String [] { column }, + PATH_WHERE, new String[] {path}, null, null); if (c != null && c.moveToNext()) { - return c.getString(1); + return c.getString(0); } else { return ""; } } catch (Exception e) { - return null; + return ""; } finally { if (c != null) { c.close(); @@ -236,21 +196,19 @@ class MtpPropertyGroup { } } - private String queryGenre(int id) { + private String queryGenre(String path) { Cursor c = null; try { - Uri uri = Audio.Genres.getContentUriForAudioId(mVolumeName, id); - c = mProvider.query(uri, - new String [] { Files.FileColumns._ID, Audio.GenresColumns.NAME }, - null, null, null, null); + c = mProvider.query(Audio.Genres.getContentUri(mVolumeName), + new String [] { Audio.GenresColumns.NAME }, + PATH_WHERE, new String[] {path}, null, null); if (c != null && c.moveToNext()) { - return c.getString(1); + return c.getString(0); } else { return ""; } } catch (Exception e) { - Log.e(TAG, "queryGenre exception", e); - return null; + return ""; } finally { if (c != null) { c.close(); @@ -258,211 +216,127 @@ class MtpPropertyGroup { } } - private Long queryLong(int id, String column) { - Cursor c = null; - try { - // for now we are only reading properties from the "objects" table - c = mProvider.query(mUri, - new String [] { Files.FileColumns._ID, column }, - ID_WHERE, new String[] { Integer.toString(id) }, null, null); - if (c != null && c.moveToNext()) { - return new Long(c.getLong(1)); - } - } catch (Exception e) { - } finally { - if (c != null) { - c.close(); - } - } - return null; - } - - private static String nameFromPath(String path) { - // extract name from full path - int start = 0; - int lastSlash = path.lastIndexOf('/'); - if (lastSlash >= 0) { - start = lastSlash + 1; - } - int end = path.length(); - if (end - start > 255) { - end = start + 255; - } - return path.substring(start, end); - } - - MtpPropertyList getPropertyList(int handle, int format, int depth) { - //Log.d(TAG, "getPropertyList handle: " + handle + " format: " + format + " depth: " + depth); - if (depth > 1) { - // we only support depth 0 and 1 - // depth 0: single object, depth 1: immediate children - return new MtpPropertyList(0, MtpConstants.RESPONSE_SPECIFICATION_BY_DEPTH_UNSUPPORTED); - } - - String where; - String[] whereArgs; - if (format == 0) { - if (handle == 0xFFFFFFFF) { - // select all objects - where = null; - whereArgs = null; - } else { - whereArgs = new String[] { Integer.toString(handle) }; - if (depth == 1) { - where = PARENT_WHERE; - } else { - where = ID_WHERE; - } - } - } else { - if (handle == 0xFFFFFFFF) { - // select all objects with given format - where = FORMAT_WHERE; - whereArgs = new String[] { Integer.toString(format) }; - } else { - whereArgs = new String[] { Integer.toString(handle), Integer.toString(format) }; - if (depth == 1) { - where = PARENT_FORMAT_WHERE; - } else { - where = ID_FORMAT_WHERE; - } - } - } - + /** + * Gets the values of the properties represented by this property group for the given + * object and adds them to the given property list. + * @return Response_OK if the operation succeeded. + */ + public int getPropertyList(MtpStorageManager.MtpObject object, MtpPropertyList list) { Cursor c = null; - try { - // don't query if not necessary - if (depth > 0 || handle == 0xFFFFFFFF || mColumns.length > 1) { - c = mProvider.query(mUri, mColumns, where, whereArgs, null, null); - if (c == null) { - return new MtpPropertyList(0, MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); + int id = object.getId(); + String path = object.getPath().toString(); + for (Property property : mProperties) { + if (property.column != -1 && c == null) { + try { + // Look up the entry in MediaProvider only if one of those properties is needed. + c = mProvider.query(mUri, mColumns, + PATH_WHERE, new String[] {path}, null, null); + if (c != null && !c.moveToNext()) { + c.close(); + c = null; + } + } catch (RemoteException e) { + Log.e(TAG, "Mediaprovider lookup failed"); } } - - int count = (c == null ? 1 : c.getCount()); - MtpPropertyList result = new MtpPropertyList(count * mProperties.length, - MtpConstants.RESPONSE_OK); - - // iterate over all objects in the query - for (int objectIndex = 0; objectIndex < count; objectIndex++) { - if (c != null) { - c.moveToNext(); - handle = (int)c.getLong(0); - } - - // iterate over all properties in the query for the given object - for (int propertyIndex = 0; propertyIndex < mProperties.length; propertyIndex++) { - Property property = mProperties[propertyIndex]; - int propertyCode = property.code; - int column = property.column; - - // handle some special cases - switch (propertyCode) { - case MtpConstants.PROPERTY_PROTECTION_STATUS: - // protection status is always 0 - result.append(handle, propertyCode, MtpConstants.TYPE_UINT16, 0); - break; - case MtpConstants.PROPERTY_OBJECT_FILE_NAME: - // special case - need to extract file name from full path - String value = c.getString(column); - if (value != null) { - result.append(handle, propertyCode, nameFromPath(value)); - } else { - result.setResult(MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); - } - break; - case MtpConstants.PROPERTY_NAME: - // first try title - String name = c.getString(column); - // then try name - if (name == null) { - name = queryString(handle, Audio.PlaylistsColumns.NAME); - } - // if title and name fail, extract name from full path - if (name == null) { - name = queryString(handle, Files.FileColumns.DATA); - if (name != null) { - name = nameFromPath(name); - } - } - if (name != null) { - result.append(handle, propertyCode, name); - } else { - result.setResult(MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); - } - break; - case MtpConstants.PROPERTY_DATE_MODIFIED: - case MtpConstants.PROPERTY_DATE_ADDED: - // convert from seconds to DateTime - result.append(handle, propertyCode, format_date_time(c.getInt(column))); - break; - case MtpConstants.PROPERTY_ORIGINAL_RELEASE_DATE: - // release date is stored internally as just the year - int year = c.getInt(column); - String dateTime = Integer.toString(year) + "0101T000000"; - result.append(handle, propertyCode, dateTime); - break; - case MtpConstants.PROPERTY_PERSISTENT_UID: - // PUID is concatenation of storageID and object handle - long puid = c.getLong(column); - puid <<= 32; - puid += handle; - result.append(handle, propertyCode, MtpConstants.TYPE_UINT128, puid); - break; - case MtpConstants.PROPERTY_TRACK: - result.append(handle, propertyCode, MtpConstants.TYPE_UINT16, - c.getInt(column) % 1000); - break; - case MtpConstants.PROPERTY_ARTIST: - result.append(handle, propertyCode, - queryAudio(handle, Audio.AudioColumns.ARTIST)); - break; - case MtpConstants.PROPERTY_ALBUM_NAME: - result.append(handle, propertyCode, - queryAudio(handle, Audio.AudioColumns.ALBUM)); - break; - case MtpConstants.PROPERTY_GENRE: - String genre = queryGenre(handle); - if (genre != null) { - result.append(handle, propertyCode, genre); - } else { - result.setResult(MtpConstants.RESPONSE_INVALID_OBJECT_HANDLE); - } - break; - case MtpConstants.PROPERTY_AUDIO_WAVE_CODEC: - case MtpConstants.PROPERTY_AUDIO_BITRATE: - case MtpConstants.PROPERTY_SAMPLE_RATE: - // we don't have these in our database, so return 0 - result.append(handle, propertyCode, MtpConstants.TYPE_UINT32, 0); + switch (property.code) { + case MtpConstants.PROPERTY_PROTECTION_STATUS: + // protection status is always 0 + list.append(id, property.code, property.type, 0); + break; + case MtpConstants.PROPERTY_NAME: + case MtpConstants.PROPERTY_OBJECT_FILE_NAME: + case MtpConstants.PROPERTY_DISPLAY_NAME: + list.append(id, property.code, object.getName()); + break; + case MtpConstants.PROPERTY_DATE_MODIFIED: + case MtpConstants.PROPERTY_DATE_ADDED: + // convert from seconds to DateTime + list.append(id, property.code, + format_date_time(object.getModifiedTime())); + break; + case MtpConstants.PROPERTY_STORAGE_ID: + list.append(id, property.code, property.type, object.getStorageId()); + break; + case MtpConstants.PROPERTY_OBJECT_FORMAT: + list.append(id, property.code, property.type, object.getFormat()); + break; + case MtpConstants.PROPERTY_OBJECT_SIZE: + list.append(id, property.code, property.type, object.getSize()); + break; + case MtpConstants.PROPERTY_PARENT_OBJECT: + list.append(id, property.code, property.type, + object.getParent().isRoot() ? 0 : object.getParent().getId()); + break; + case MtpConstants.PROPERTY_PERSISTENT_UID: + // The persistent uid must be unique and never reused among all objects, + // and remain the same between sessions. + long puid = (object.getPath().toString().hashCode() << 32) + + object.getModifiedTime(); + list.append(id, property.code, property.type, puid); + break; + case MtpConstants.PROPERTY_ORIGINAL_RELEASE_DATE: + // release date is stored internally as just the year + int year = 0; + if (c != null) + year = c.getInt(property.column); + String dateTime = Integer.toString(year) + "0101T000000"; + list.append(id, property.code, dateTime); + break; + case MtpConstants.PROPERTY_TRACK: + int track = 0; + if (c != null) + track = c.getInt(property.column); + list.append(id, property.code, MtpConstants.TYPE_UINT16, + track % 1000); + break; + case MtpConstants.PROPERTY_ARTIST: + list.append(id, property.code, + queryAudio(path, Audio.AudioColumns.ARTIST)); + break; + case MtpConstants.PROPERTY_ALBUM_NAME: + list.append(id, property.code, + queryAudio(path, Audio.AudioColumns.ALBUM)); + break; + case MtpConstants.PROPERTY_GENRE: + String genre = queryGenre(path); + if (genre != null) { + list.append(id, property.code, genre); + } + break; + case MtpConstants.PROPERTY_AUDIO_WAVE_CODEC: + case MtpConstants.PROPERTY_AUDIO_BITRATE: + case MtpConstants.PROPERTY_SAMPLE_RATE: + // we don't have these in our database, so return 0 + list.append(id, property.code, MtpConstants.TYPE_UINT32, 0); + break; + case MtpConstants.PROPERTY_BITRATE_TYPE: + case MtpConstants.PROPERTY_NUMBER_OF_CHANNELS: + // we don't have these in our database, so return 0 + list.append(id, property.code, MtpConstants.TYPE_UINT16, 0); + break; + default: + switch(property.type) { + case MtpConstants.TYPE_UNDEFINED: + list.append(id, property.code, property.type, 0); break; - case MtpConstants.PROPERTY_BITRATE_TYPE: - case MtpConstants.PROPERTY_NUMBER_OF_CHANNELS: - // we don't have these in our database, so return 0 - result.append(handle, propertyCode, MtpConstants.TYPE_UINT16, 0); + case MtpConstants.TYPE_STR: + String value = ""; + if (c != null) + value = c.getString(property.column); + list.append(id, property.code, value); break; default: - if (property.type == MtpConstants.TYPE_STR) { - result.append(handle, propertyCode, c.getString(column)); - } else if (property.type == MtpConstants.TYPE_UNDEFINED) { - result.append(handle, propertyCode, property.type, 0); - } else { - result.append(handle, propertyCode, property.type, - c.getLong(column)); - } - break; + long longValue = 0L; + if (c != null) + longValue = c.getLong(property.column); + list.append(id, property.code, property.type, longValue); } - } - } - - return result; - } catch (RemoteException e) { - return new MtpPropertyList(0, MtpConstants.RESPONSE_GENERAL_ERROR); - } finally { - if (c != null) { - c.close(); } } - // impossible to get here, so no return statement + if (c != null) + c.close(); + return MtpConstants.RESPONSE_OK; } private native String format_date_time(long seconds); |