| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.providers.media; |
| |
| import android.annotation.Nullable; |
| import android.content.ContentResolver; |
| import android.content.ContentUris; |
| import android.content.Context; |
| import android.content.res.AssetFileDescriptor; |
| import android.database.Cursor; |
| import android.database.MatrixCursor; |
| import android.database.MatrixCursor.RowBuilder; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Point; |
| import android.media.ExifInterface; |
| import android.media.MediaMetadata; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.CancellationSignal; |
| import android.os.IBinder; |
| import android.os.ParcelFileDescriptor; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.BaseColumns; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.provider.DocumentsContract.Root; |
| import android.provider.DocumentsProvider; |
| import android.provider.MediaStore; |
| import android.provider.MediaStore.Audio; |
| import android.provider.MediaStore.Audio.AlbumColumns; |
| import android.provider.MediaStore.Audio.Albums; |
| import android.provider.MediaStore.Audio.ArtistColumns; |
| import android.provider.MediaStore.Audio.Artists; |
| import android.provider.MediaStore.Audio.AudioColumns; |
| import android.provider.MediaStore.Files.FileColumns; |
| import android.provider.MediaStore.Images; |
| import android.provider.MediaStore.Images.ImageColumns; |
| import android.provider.MediaStore.Video; |
| import android.provider.MediaStore.Video.VideoColumns; |
| import android.provider.MetadataReader; |
| import android.text.TextUtils; |
| import android.text.format.DateFormat; |
| import android.text.format.DateUtils; |
| import android.util.Log; |
| |
| import libcore.io.IoUtils; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Locale; |
| import java.util.Map; |
| |
| /** |
| * Presents a {@link DocumentsContract} view of {@link MediaProvider} external |
| * contents. |
| */ |
| public class MediaDocumentsProvider extends DocumentsProvider { |
| private static final String TAG = "MediaDocumentsProvider"; |
| |
| private static final String AUTHORITY = "com.android.providers.media.documents"; |
| |
| private static final String[] DEFAULT_ROOT_PROJECTION = new String[] { |
| Root.COLUMN_ROOT_ID, Root.COLUMN_FLAGS, Root.COLUMN_ICON, |
| Root.COLUMN_TITLE, Root.COLUMN_DOCUMENT_ID, Root.COLUMN_MIME_TYPES |
| }; |
| |
| private static final String[] DEFAULT_DOCUMENT_PROJECTION = new String[] { |
| Document.COLUMN_DOCUMENT_ID, Document.COLUMN_MIME_TYPE, Document.COLUMN_DISPLAY_NAME, |
| Document.COLUMN_LAST_MODIFIED, Document.COLUMN_FLAGS, Document.COLUMN_SIZE, |
| }; |
| |
| private static final String IMAGE_MIME_TYPES = joinNewline("image/*"); |
| |
| private static final String VIDEO_MIME_TYPES = joinNewline("video/*"); |
| |
| private static final String AUDIO_MIME_TYPES = joinNewline( |
| "audio/*", "application/ogg", "application/x-flac"); |
| |
| private static final String TYPE_IMAGES_ROOT = "images_root"; |
| private static final String TYPE_IMAGES_BUCKET = "images_bucket"; |
| private static final String TYPE_IMAGE = "image"; |
| |
| private static final String TYPE_VIDEOS_ROOT = "videos_root"; |
| private static final String TYPE_VIDEOS_BUCKET = "videos_bucket"; |
| private static final String TYPE_VIDEO = "video"; |
| |
| private static final String TYPE_AUDIO_ROOT = "audio_root"; |
| private static final String TYPE_AUDIO = "audio"; |
| private static final String TYPE_ARTIST = "artist"; |
| private static final String TYPE_ALBUM = "album"; |
| |
| private static boolean sReturnedImagesEmpty = false; |
| private static boolean sReturnedVideosEmpty = false; |
| private static boolean sReturnedAudioEmpty = false; |
| |
| private static String joinNewline(String... args) { |
| return TextUtils.join("\n", args); |
| } |
| |
| public static final String METADATA_KEY_AUDIO = "android.media.metadata.audio"; |
| public static final String METADATA_KEY_VIDEO = "android.media.metadata.video"; |
| // Video lat/long are just that. Lat/long. Unlike EXIF where the values are |
| // in fact some funky string encoding. So we add our own contstant to convey coords. |
| public static final String METADATA_VIDEO_LATITUDE = "android.media.metadata.video:latitude"; |
| public static final String METADATA_VIDEO_LONGITUTE = "android.media.metadata.video:longitude"; |
| |
| /* |
| * A mapping between media colums and metadata tag names. These keys of the |
| * map form the projection for queries against the media store database. |
| */ |
| private static final Map<String, String> IMAGE_COLUMN_MAP = new HashMap<>(); |
| private static final Map<String, String> VIDEO_COLUMN_MAP = new HashMap<>(); |
| private static final Map<String, String> AUDIO_COLUMN_MAP = new HashMap<>(); |
| |
| static { |
| /** |
| * Note that for images (jpegs at least) we'll first try an alternate |
| * means of extracting metadata, one that provides more data. But if |
| * that fails, or if the image type is not JPEG, we fall back to these columns. |
| */ |
| IMAGE_COLUMN_MAP.put(ImageColumns.WIDTH, ExifInterface.TAG_IMAGE_WIDTH); |
| IMAGE_COLUMN_MAP.put(ImageColumns.HEIGHT, ExifInterface.TAG_IMAGE_LENGTH); |
| IMAGE_COLUMN_MAP.put(ImageColumns.DATE_TAKEN, ExifInterface.TAG_DATETIME); |
| IMAGE_COLUMN_MAP.put(ImageColumns.LATITUDE, ExifInterface.TAG_GPS_LATITUDE); |
| IMAGE_COLUMN_MAP.put(ImageColumns.LONGITUDE, ExifInterface.TAG_GPS_LONGITUDE); |
| |
| VIDEO_COLUMN_MAP.put(VideoColumns.DURATION, MediaMetadata.METADATA_KEY_DURATION); |
| VIDEO_COLUMN_MAP.put(VideoColumns.HEIGHT, ExifInterface.TAG_IMAGE_LENGTH); |
| VIDEO_COLUMN_MAP.put(VideoColumns.WIDTH, ExifInterface.TAG_IMAGE_WIDTH); |
| VIDEO_COLUMN_MAP.put(VideoColumns.LATITUDE, METADATA_VIDEO_LATITUDE); |
| VIDEO_COLUMN_MAP.put(VideoColumns.LONGITUDE, METADATA_VIDEO_LONGITUTE); |
| VIDEO_COLUMN_MAP.put(VideoColumns.DATE_TAKEN, MediaMetadata.METADATA_KEY_DATE); |
| |
| AUDIO_COLUMN_MAP.put(AudioColumns.ARTIST, MediaMetadata.METADATA_KEY_ARTIST); |
| AUDIO_COLUMN_MAP.put(AudioColumns.COMPOSER, MediaMetadata.METADATA_KEY_COMPOSER); |
| AUDIO_COLUMN_MAP.put(AudioColumns.ALBUM, MediaMetadata.METADATA_KEY_ALBUM); |
| AUDIO_COLUMN_MAP.put(AudioColumns.YEAR, MediaMetadata.METADATA_KEY_YEAR); |
| AUDIO_COLUMN_MAP.put(AudioColumns.DURATION, MediaMetadata.METADATA_KEY_DURATION); |
| } |
| |
| private void copyNotificationUri(MatrixCursor result, Cursor cursor) { |
| result.setNotificationUri(getContext().getContentResolver(), cursor.getNotificationUri()); |
| } |
| |
| @Override |
| public boolean onCreate() { |
| return true; |
| } |
| |
| private void enforceShellRestrictions() { |
| if (UserHandle.getCallingAppId() == android.os.Process.SHELL_UID |
| && getContext().getSystemService(UserManager.class) |
| .hasUserRestriction(UserManager.DISALLOW_USB_FILE_TRANSFER)) { |
| throw new SecurityException( |
| "Shell user cannot access files for user " + UserHandle.myUserId()); |
| } |
| } |
| |
| @Override |
| protected int enforceReadPermissionInner(Uri uri, String callingPkg, IBinder callerToken) |
| throws SecurityException { |
| enforceShellRestrictions(); |
| return super.enforceReadPermissionInner(uri, callingPkg, callerToken); |
| } |
| |
| @Override |
| protected int enforceWritePermissionInner(Uri uri, String callingPkg, IBinder callerToken) |
| throws SecurityException { |
| enforceShellRestrictions(); |
| return super.enforceWritePermissionInner(uri, callingPkg, callerToken); |
| } |
| |
| private static void notifyRootsChanged(Context context) { |
| context.getContentResolver() |
| .notifyChange(DocumentsContract.buildRootsUri(AUTHORITY), null, false); |
| } |
| |
| /** |
| * When inserting the first item of each type, we need to trigger a roots |
| * refresh to clear a previously reported {@link Root#FLAG_EMPTY}. |
| */ |
| static void onMediaStoreInsert(Context context, String volumeName, int type, long id) { |
| if (!"external".equals(volumeName)) return; |
| |
| if (type == FileColumns.MEDIA_TYPE_IMAGE && sReturnedImagesEmpty) { |
| sReturnedImagesEmpty = false; |
| notifyRootsChanged(context); |
| } else if (type == FileColumns.MEDIA_TYPE_VIDEO && sReturnedVideosEmpty) { |
| sReturnedVideosEmpty = false; |
| notifyRootsChanged(context); |
| } else if (type == FileColumns.MEDIA_TYPE_AUDIO && sReturnedAudioEmpty) { |
| sReturnedAudioEmpty = false; |
| notifyRootsChanged(context); |
| } |
| } |
| |
| /** |
| * When deleting an item, we need to revoke any outstanding Uri grants. |
| */ |
| static void onMediaStoreDelete(Context context, String volumeName, int type, long id) { |
| if (!"external".equals(volumeName)) return; |
| |
| if (type == FileColumns.MEDIA_TYPE_IMAGE) { |
| final Uri uri = DocumentsContract.buildDocumentUri( |
| AUTHORITY, getDocIdForIdent(TYPE_IMAGE, id)); |
| context.revokeUriPermission(uri, ~0); |
| } else if (type == FileColumns.MEDIA_TYPE_VIDEO) { |
| final Uri uri = DocumentsContract.buildDocumentUri( |
| AUTHORITY, getDocIdForIdent(TYPE_VIDEO, id)); |
| context.revokeUriPermission(uri, ~0); |
| } else if (type == FileColumns.MEDIA_TYPE_AUDIO) { |
| final Uri uri = DocumentsContract.buildDocumentUri( |
| AUTHORITY, getDocIdForIdent(TYPE_AUDIO, id)); |
| context.revokeUriPermission(uri, ~0); |
| } |
| } |
| |
| private static class Ident { |
| public String type; |
| public long id; |
| } |
| |
| private static Ident getIdentForDocId(String docId) { |
| final Ident ident = new Ident(); |
| final int split = docId.indexOf(':'); |
| if (split == -1) { |
| ident.type = docId; |
| ident.id = -1; |
| } else { |
| ident.type = docId.substring(0, split); |
| ident.id = Long.parseLong(docId.substring(split + 1)); |
| } |
| return ident; |
| } |
| |
| private static String getDocIdForIdent(String type, long id) { |
| return type + ":" + id; |
| } |
| |
| private static String[] resolveRootProjection(String[] projection) { |
| return projection != null ? projection : DEFAULT_ROOT_PROJECTION; |
| } |
| |
| private static String[] resolveDocumentProjection(String[] projection) { |
| return projection != null ? projection : DEFAULT_DOCUMENT_PROJECTION; |
| } |
| |
| private Uri getUriForDocumentId(String docId) { |
| final Ident ident = getIdentForDocId(docId); |
| if (TYPE_IMAGE.equals(ident.type) && ident.id != -1) { |
| return ContentUris.withAppendedId( |
| Images.Media.EXTERNAL_CONTENT_URI, ident.id); |
| } else if (TYPE_VIDEO.equals(ident.type) && ident.id != -1) { |
| return ContentUris.withAppendedId( |
| Video.Media.EXTERNAL_CONTENT_URI, ident.id); |
| } else if (TYPE_AUDIO.equals(ident.type) && ident.id != -1) { |
| return ContentUris.withAppendedId( |
| Audio.Media.EXTERNAL_CONTENT_URI, ident.id); |
| } else { |
| throw new UnsupportedOperationException("Unsupported document " + docId); |
| } |
| } |
| |
| @Override |
| public void deleteDocument(String docId) throws FileNotFoundException { |
| final Uri target = getUriForDocumentId(docId); |
| |
| // Delegate to real provider |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| getContext().getContentResolver().delete(target, null, null); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public @Nullable Bundle getDocumentMetadata(String docId) throws FileNotFoundException { |
| |
| String mimeType = getDocumentType(docId); |
| |
| if (MetadataReader.isSupportedMimeType(mimeType)) { |
| return getDocumentMetadataFromStream(docId, mimeType); |
| } else { |
| return getDocumentMetadataFromIndex(docId); |
| } |
| } |
| |
| private @Nullable Bundle getDocumentMetadataFromStream(String docId, String mimeType) { |
| assert MetadataReader.isSupportedMimeType(mimeType); |
| InputStream stream = null; |
| try { |
| stream = new ParcelFileDescriptor.AutoCloseInputStream( |
| openDocument(docId, "r", null)); |
| Bundle metadata = new Bundle(); |
| MetadataReader.getMetadata(metadata, stream, mimeType, null); |
| return metadata; |
| } catch (IOException io) { |
| return null; |
| } finally { |
| IoUtils.closeQuietly(stream); |
| } |
| } |
| |
| public @Nullable Bundle getDocumentMetadataFromIndex(String docId) |
| throws FileNotFoundException { |
| |
| final Ident ident = getIdentForDocId(docId); |
| |
| Map<String, String> columnMap = null; |
| String tagType; |
| Uri query; |
| |
| switch (ident.type) { |
| case TYPE_IMAGE: |
| columnMap = IMAGE_COLUMN_MAP; |
| tagType = DocumentsContract.METADATA_EXIF; |
| query = Images.Media.EXTERNAL_CONTENT_URI; |
| break; |
| case TYPE_VIDEO: |
| columnMap = VIDEO_COLUMN_MAP; |
| tagType = METADATA_KEY_VIDEO; |
| query = Video.Media.EXTERNAL_CONTENT_URI; |
| break; |
| case TYPE_AUDIO: |
| columnMap = AUDIO_COLUMN_MAP; |
| tagType = METADATA_KEY_AUDIO; |
| query = Audio.Media.EXTERNAL_CONTENT_URI; |
| break; |
| default: |
| // Unsupported file type. |
| throw new FileNotFoundException( |
| "Metadata request for unsupported file type: " + ident.type); |
| } |
| |
| final long token = Binder.clearCallingIdentity(); |
| Cursor cursor = null; |
| Bundle result = null; |
| |
| final ContentResolver resolver = getContext().getContentResolver(); |
| Collection<String> columns = columnMap.keySet(); |
| String[] projection = columns.toArray(new String[columns.size()]); |
| try { |
| cursor = resolver.query( |
| query, |
| projection, |
| BaseColumns._ID + "=?", |
| new String[]{Long.toString(ident.id)}, |
| null); |
| |
| if (!cursor.moveToFirst()) { |
| throw new FileNotFoundException("Can't find document id: " + docId); |
| } |
| |
| final Bundle metadata = extractMetadataFromCursor(cursor, columnMap); |
| result = new Bundle(); |
| result.putBundle(tagType, metadata); |
| result.putStringArray( |
| DocumentsContract.METADATA_TYPES, |
| new String[]{tagType}); |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| Binder.restoreCallingIdentity(token); |
| } |
| return result; |
| } |
| |
| private static Bundle extractMetadataFromCursor(Cursor cursor, Map<String, String> columns) { |
| |
| assert (cursor.getCount() == 1); |
| |
| final Bundle metadata = new Bundle(); |
| for (String col : columns.keySet()) { |
| |
| int index = cursor.getColumnIndex(col); |
| String bundleTag = columns.get(col); |
| |
| // Special case to be able to pull longs out of a cursor, as long is not a supported |
| // field of getType. |
| if (ExifInterface.TAG_DATETIME.equals(bundleTag)) { |
| // formate string to be consistent with how EXIF interface formats the date. |
| long date = cursor.getLong(index); |
| String format = DateFormat.getBestDateTimePattern(Locale.getDefault(), |
| "MMM dd, yyyy, hh:mm"); |
| metadata.putString(bundleTag, DateFormat.format(format, date).toString()); |
| continue; |
| } |
| |
| switch (cursor.getType(index)) { |
| case Cursor.FIELD_TYPE_INTEGER: |
| metadata.putInt(bundleTag, cursor.getInt(index)); |
| break; |
| case Cursor.FIELD_TYPE_FLOAT: |
| //Errors on the side of greater precision since interface doesnt support doubles |
| metadata.putFloat(bundleTag, cursor.getFloat(index)); |
| break; |
| case Cursor.FIELD_TYPE_STRING: |
| metadata.putString(bundleTag, cursor.getString(index)); |
| break; |
| case Cursor.FIELD_TYPE_BLOB: |
| Log.d(TAG, "Unsupported type, blob, for col: " + bundleTag); |
| break; |
| case Cursor.FIELD_TYPE_NULL: |
| Log.d(TAG, "Unsupported type, null, for col: " + bundleTag); |
| break; |
| default: |
| throw new RuntimeException("Data type not supported"); |
| } |
| } |
| |
| return metadata; |
| } |
| |
| @Override |
| public Cursor queryRoots(String[] projection) throws FileNotFoundException { |
| final MatrixCursor result = new MatrixCursor(resolveRootProjection(projection)); |
| includeImagesRoot(result); |
| includeVideosRoot(result); |
| includeAudioRoot(result); |
| return result; |
| } |
| |
| @Override |
| public Cursor queryDocument(String docId, String[] projection) throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection)); |
| final Ident ident = getIdentForDocId(docId); |
| final String[] queryArgs = new String[] { Long.toString(ident.id) } ; |
| |
| final long token = Binder.clearCallingIdentity(); |
| Cursor cursor = null; |
| try { |
| if (TYPE_IMAGES_ROOT.equals(ident.type)) { |
| // single root |
| includeImagesRootDocument(result); |
| } else if (TYPE_IMAGES_BUCKET.equals(ident.type)) { |
| // single bucket |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImagesBucketQuery.PROJECTION, ImageColumns.BUCKET_ID + "=?", |
| queryArgs, ImagesBucketQuery.SORT_ORDER); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeImagesBucket(result, cursor); |
| } |
| } else if (TYPE_IMAGE.equals(ident.type)) { |
| // single image |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImageQuery.PROJECTION, BaseColumns._ID + "=?", queryArgs, |
| null); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeImage(result, cursor); |
| } |
| } else if (TYPE_VIDEOS_ROOT.equals(ident.type)) { |
| // single root |
| includeVideosRootDocument(result); |
| } else if (TYPE_VIDEOS_BUCKET.equals(ident.type)) { |
| // single bucket |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, |
| VideosBucketQuery.PROJECTION, VideoColumns.BUCKET_ID + "=?", |
| queryArgs, VideosBucketQuery.SORT_ORDER); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeVideosBucket(result, cursor); |
| } |
| } else if (TYPE_VIDEO.equals(ident.type)) { |
| // single video |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, |
| VideoQuery.PROJECTION, BaseColumns._ID + "=?", queryArgs, |
| null); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeVideo(result, cursor); |
| } |
| } else if (TYPE_AUDIO_ROOT.equals(ident.type)) { |
| // single root |
| includeAudioRootDocument(result); |
| } else if (TYPE_ARTIST.equals(ident.type)) { |
| // single artist |
| cursor = resolver.query(Artists.EXTERNAL_CONTENT_URI, |
| ArtistQuery.PROJECTION, BaseColumns._ID + "=?", queryArgs, |
| null); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeArtist(result, cursor); |
| } |
| } else if (TYPE_ALBUM.equals(ident.type)) { |
| // single album |
| cursor = resolver.query(Albums.EXTERNAL_CONTENT_URI, |
| AlbumQuery.PROJECTION, BaseColumns._ID + "=?", queryArgs, |
| null); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeAlbum(result, cursor); |
| } |
| } else if (TYPE_AUDIO.equals(ident.type)) { |
| // single song |
| cursor = resolver.query(Audio.Media.EXTERNAL_CONTENT_URI, |
| SongQuery.PROJECTION, BaseColumns._ID + "=?", queryArgs, |
| null); |
| copyNotificationUri(result, cursor); |
| if (cursor.moveToFirst()) { |
| includeAudio(result, cursor); |
| } |
| } else { |
| throw new UnsupportedOperationException("Unsupported document " + docId); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| Binder.restoreCallingIdentity(token); |
| } |
| return result; |
| } |
| |
| @Override |
| public Cursor queryChildDocuments(String docId, String[] projection, String sortOrder) |
| throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection)); |
| final Ident ident = getIdentForDocId(docId); |
| final String[] queryArgs = new String[] { Long.toString(ident.id) } ; |
| |
| final long token = Binder.clearCallingIdentity(); |
| Cursor cursor = null; |
| try { |
| if (TYPE_IMAGES_ROOT.equals(ident.type)) { |
| // include all unique buckets |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImagesBucketQuery.PROJECTION, null, null, ImagesBucketQuery.SORT_ORDER); |
| // multiple orders |
| copyNotificationUri(result, cursor); |
| long lastId = Long.MIN_VALUE; |
| while (cursor.moveToNext()) { |
| final long id = cursor.getLong(ImagesBucketQuery.BUCKET_ID); |
| if (lastId != id) { |
| includeImagesBucket(result, cursor); |
| lastId = id; |
| } |
| } |
| } else if (TYPE_IMAGES_BUCKET.equals(ident.type)) { |
| // include images under bucket |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImageQuery.PROJECTION, ImageColumns.BUCKET_ID + "=?", |
| queryArgs, null); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeImage(result, cursor); |
| } |
| } else if (TYPE_VIDEOS_ROOT.equals(ident.type)) { |
| // include all unique buckets |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, |
| VideosBucketQuery.PROJECTION, null, null, VideosBucketQuery.SORT_ORDER); |
| copyNotificationUri(result, cursor); |
| long lastId = Long.MIN_VALUE; |
| while (cursor.moveToNext()) { |
| final long id = cursor.getLong(VideosBucketQuery.BUCKET_ID); |
| if (lastId != id) { |
| includeVideosBucket(result, cursor); |
| lastId = id; |
| } |
| } |
| } else if (TYPE_VIDEOS_BUCKET.equals(ident.type)) { |
| // include videos under bucket |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, |
| VideoQuery.PROJECTION, VideoColumns.BUCKET_ID + "=?", |
| queryArgs, null); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeVideo(result, cursor); |
| } |
| } else if (TYPE_AUDIO_ROOT.equals(ident.type)) { |
| // include all artists |
| cursor = resolver.query(Audio.Artists.EXTERNAL_CONTENT_URI, |
| ArtistQuery.PROJECTION, null, null, null); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeArtist(result, cursor); |
| } |
| } else if (TYPE_ARTIST.equals(ident.type)) { |
| // include all albums under artist |
| cursor = resolver.query(Artists.Albums.getContentUri("external", ident.id), |
| AlbumQuery.PROJECTION, null, null, null); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeAlbum(result, cursor); |
| } |
| } else if (TYPE_ALBUM.equals(ident.type)) { |
| // include all songs under album |
| cursor = resolver.query(Audio.Media.EXTERNAL_CONTENT_URI, |
| SongQuery.PROJECTION, AudioColumns.ALBUM_ID + "=?", |
| queryArgs, null); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeAudio(result, cursor); |
| } |
| } else { |
| throw new UnsupportedOperationException("Unsupported document " + docId); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| Binder.restoreCallingIdentity(token); |
| } |
| return result; |
| } |
| |
| @Override |
| public Cursor queryRecentDocuments( |
| String rootId, String[] projection, @Nullable Bundle queryArgs, |
| @Nullable CancellationSignal signal) |
| throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection)); |
| |
| final long token = Binder.clearCallingIdentity(); |
| |
| int limit = -1; |
| if (queryArgs != null) { |
| limit = queryArgs.getInt(ContentResolver.QUERY_ARG_LIMIT, -1); |
| } |
| if (limit < 0) { |
| // Use default value, and no QUERY_ARG* is honored. |
| limit = 64; |
| } else { |
| // We are honoring the QUERY_ARG_LIMIT. |
| Bundle extras = new Bundle(); |
| result.setExtras(extras); |
| extras.putStringArray(ContentResolver.EXTRA_HONORED_ARGS, new String[]{ |
| ContentResolver.QUERY_ARG_LIMIT |
| }); |
| } |
| |
| Cursor cursor = null; |
| try { |
| if (TYPE_IMAGES_ROOT.equals(rootId)) { |
| // include all unique buckets |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImageQuery.PROJECTION, null, null, ImageColumns.DATE_MODIFIED + " DESC"); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext() && result.getCount() < limit) { |
| includeImage(result, cursor); |
| } |
| } else if (TYPE_VIDEOS_ROOT.equals(rootId)) { |
| // include all unique buckets |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, |
| VideoQuery.PROJECTION, null, null, VideoColumns.DATE_MODIFIED + " DESC"); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext() && result.getCount() < limit) { |
| includeVideo(result, cursor); |
| } |
| } else { |
| throw new UnsupportedOperationException("Unsupported root " + rootId); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| Binder.restoreCallingIdentity(token); |
| } |
| return result; |
| } |
| |
| @Override |
| public Cursor querySearchDocuments(String rootId, String query, String[] projection) |
| throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection)); |
| |
| final long token = Binder.clearCallingIdentity(); |
| final String[] queryArgs = new String[] { "%" + query + "%" }; |
| Cursor cursor = null; |
| try { |
| if (TYPE_IMAGES_ROOT.equals(rootId)) { |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, ImageQuery.PROJECTION, |
| ImageColumns.DISPLAY_NAME + " LIKE ?", queryArgs, |
| ImageColumns.DATE_MODIFIED + " DESC"); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeImage(result, cursor); |
| } |
| } else if (TYPE_VIDEOS_ROOT.equals(rootId)) { |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, VideoQuery.PROJECTION, |
| VideoColumns.DISPLAY_NAME + " LIKE ?", queryArgs, |
| VideoColumns.DATE_MODIFIED + " DESC"); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeVideo(result, cursor); |
| } |
| } else if (TYPE_AUDIO_ROOT.equals(rootId)) { |
| cursor = resolver.query(Audio.Media.EXTERNAL_CONTENT_URI, SongQuery.PROJECTION, |
| AudioColumns.TITLE + " LIKE ?", queryArgs, |
| AudioColumns.DATE_MODIFIED + " DESC"); |
| copyNotificationUri(result, cursor); |
| while (cursor.moveToNext()) { |
| includeAudio(result, cursor); |
| } |
| } else { |
| throw new UnsupportedOperationException("Unsupported root " + rootId); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| Binder.restoreCallingIdentity(token); |
| } |
| return result; |
| } |
| |
| @Override |
| public ParcelFileDescriptor openDocument(String docId, String mode, CancellationSignal signal) |
| throws FileNotFoundException { |
| final Uri target = getUriForDocumentId(docId); |
| |
| if (!"r".equals(mode)) { |
| throw new IllegalArgumentException("Media is read-only"); |
| } |
| |
| // Delegate to real provider |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| return getContext().getContentResolver().openFileDescriptor(target, mode); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public AssetFileDescriptor openDocumentThumbnail( |
| String docId, Point sizeHint, CancellationSignal signal) throws FileNotFoundException { |
| final Ident ident = getIdentForDocId(docId); |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| if (TYPE_IMAGES_BUCKET.equals(ident.type)) { |
| final long id = getImageForBucketCleared(ident.id); |
| return openOrCreateImageThumbnailCleared(id, signal); |
| } else if (TYPE_IMAGE.equals(ident.type)) { |
| return openOrCreateImageThumbnailCleared(ident.id, signal); |
| } else if (TYPE_VIDEOS_BUCKET.equals(ident.type)) { |
| final long id = getVideoForBucketCleared(ident.id); |
| return openOrCreateVideoThumbnailCleared(id, signal); |
| } else if (TYPE_VIDEO.equals(ident.type)) { |
| return openOrCreateVideoThumbnailCleared(ident.id, signal); |
| } else { |
| throw new UnsupportedOperationException("Unsupported document " + docId); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| private boolean isEmpty(Uri uri) { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| final long token = Binder.clearCallingIdentity(); |
| Cursor cursor = null; |
| try { |
| cursor = resolver.query(uri, new String[] { |
| BaseColumns._ID }, null, null, null); |
| return (cursor == null) || (cursor.getCount() == 0); |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| private void includeImagesRoot(MatrixCursor result) { |
| int flags = Root.FLAG_LOCAL_ONLY | Root.FLAG_SUPPORTS_RECENTS | Root.FLAG_SUPPORTS_SEARCH; |
| if (isEmpty(Images.Media.EXTERNAL_CONTENT_URI)) { |
| flags |= Root.FLAG_EMPTY; |
| sReturnedImagesEmpty = true; |
| } |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Root.COLUMN_ROOT_ID, TYPE_IMAGES_ROOT); |
| row.add(Root.COLUMN_FLAGS, flags); |
| row.add(Root.COLUMN_TITLE, getContext().getString(R.string.root_images)); |
| row.add(Root.COLUMN_DOCUMENT_ID, TYPE_IMAGES_ROOT); |
| row.add(Root.COLUMN_MIME_TYPES, IMAGE_MIME_TYPES); |
| } |
| |
| private void includeVideosRoot(MatrixCursor result) { |
| int flags = Root.FLAG_LOCAL_ONLY | Root.FLAG_SUPPORTS_RECENTS | Root.FLAG_SUPPORTS_SEARCH; |
| if (isEmpty(Video.Media.EXTERNAL_CONTENT_URI)) { |
| flags |= Root.FLAG_EMPTY; |
| sReturnedVideosEmpty = true; |
| } |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Root.COLUMN_ROOT_ID, TYPE_VIDEOS_ROOT); |
| row.add(Root.COLUMN_FLAGS, flags); |
| row.add(Root.COLUMN_TITLE, getContext().getString(R.string.root_videos)); |
| row.add(Root.COLUMN_DOCUMENT_ID, TYPE_VIDEOS_ROOT); |
| row.add(Root.COLUMN_MIME_TYPES, VIDEO_MIME_TYPES); |
| } |
| |
| private void includeAudioRoot(MatrixCursor result) { |
| int flags = Root.FLAG_LOCAL_ONLY | Root.FLAG_SUPPORTS_SEARCH; |
| if (isEmpty(Audio.Media.EXTERNAL_CONTENT_URI)) { |
| flags |= Root.FLAG_EMPTY; |
| sReturnedAudioEmpty = true; |
| } |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Root.COLUMN_ROOT_ID, TYPE_AUDIO_ROOT); |
| row.add(Root.COLUMN_FLAGS, flags); |
| row.add(Root.COLUMN_TITLE, getContext().getString(R.string.root_audio)); |
| row.add(Root.COLUMN_DOCUMENT_ID, TYPE_AUDIO_ROOT); |
| row.add(Root.COLUMN_MIME_TYPES, AUDIO_MIME_TYPES); |
| } |
| |
| private void includeImagesRootDocument(MatrixCursor result) { |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, TYPE_IMAGES_ROOT); |
| row.add(Document.COLUMN_DISPLAY_NAME, getContext().getString(R.string.root_images)); |
| row.add(Document.COLUMN_FLAGS, |
| Document.FLAG_DIR_PREFERS_GRID | Document.FLAG_DIR_PREFERS_LAST_MODIFIED); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| } |
| |
| private void includeVideosRootDocument(MatrixCursor result) { |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, TYPE_VIDEOS_ROOT); |
| row.add(Document.COLUMN_DISPLAY_NAME, getContext().getString(R.string.root_videos)); |
| row.add(Document.COLUMN_FLAGS, |
| Document.FLAG_DIR_PREFERS_GRID | Document.FLAG_DIR_PREFERS_LAST_MODIFIED); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| } |
| |
| private void includeAudioRootDocument(MatrixCursor result) { |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, TYPE_AUDIO_ROOT); |
| row.add(Document.COLUMN_DISPLAY_NAME, getContext().getString(R.string.root_audio)); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| } |
| |
| private interface ImagesBucketQuery { |
| final String[] PROJECTION = new String[] { |
| ImageColumns.BUCKET_ID, |
| ImageColumns.BUCKET_DISPLAY_NAME, |
| ImageColumns.DATE_MODIFIED }; |
| final String SORT_ORDER = ImageColumns.BUCKET_ID + ", " + ImageColumns.DATE_MODIFIED |
| + " DESC"; |
| |
| final int BUCKET_ID = 0; |
| final int BUCKET_DISPLAY_NAME = 1; |
| final int DATE_MODIFIED = 2; |
| } |
| |
| private void includeImagesBucket(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(ImagesBucketQuery.BUCKET_ID); |
| final String docId = getDocIdForIdent(TYPE_IMAGES_BUCKET, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, |
| cursor.getString(ImagesBucketQuery.BUCKET_DISPLAY_NAME)); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| row.add(Document.COLUMN_LAST_MODIFIED, |
| cursor.getLong(ImagesBucketQuery.DATE_MODIFIED) * DateUtils.SECOND_IN_MILLIS); |
| row.add(Document.COLUMN_FLAGS, Document.FLAG_DIR_PREFERS_GRID |
| | Document.FLAG_SUPPORTS_THUMBNAIL | Document.FLAG_DIR_PREFERS_LAST_MODIFIED); |
| } |
| |
| private interface ImageQuery { |
| final String[] PROJECTION = new String[] { |
| ImageColumns._ID, |
| ImageColumns.DISPLAY_NAME, |
| ImageColumns.MIME_TYPE, |
| ImageColumns.SIZE, |
| ImageColumns.DATE_MODIFIED }; |
| |
| final int _ID = 0; |
| final int DISPLAY_NAME = 1; |
| final int MIME_TYPE = 2; |
| final int SIZE = 3; |
| final int DATE_MODIFIED = 4; |
| } |
| |
| private void includeImage(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(ImageQuery._ID); |
| final String docId = getDocIdForIdent(TYPE_IMAGE, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, cursor.getString(ImageQuery.DISPLAY_NAME)); |
| row.add(Document.COLUMN_SIZE, cursor.getLong(ImageQuery.SIZE)); |
| row.add(Document.COLUMN_MIME_TYPE, cursor.getString(ImageQuery.MIME_TYPE)); |
| row.add(Document.COLUMN_LAST_MODIFIED, |
| cursor.getLong(ImageQuery.DATE_MODIFIED) * DateUtils.SECOND_IN_MILLIS); |
| row.add(Document.COLUMN_FLAGS, |
| Document.FLAG_SUPPORTS_THUMBNAIL |
| | Document.FLAG_SUPPORTS_DELETE |
| | Document.FLAG_SUPPORTS_METADATA); |
| } |
| |
| private interface VideosBucketQuery { |
| final String[] PROJECTION = new String[] { |
| VideoColumns.BUCKET_ID, |
| VideoColumns.BUCKET_DISPLAY_NAME, |
| VideoColumns.DATE_MODIFIED }; |
| final String SORT_ORDER = VideoColumns.BUCKET_ID + ", " + VideoColumns.DATE_MODIFIED |
| + " DESC"; |
| |
| final int BUCKET_ID = 0; |
| final int BUCKET_DISPLAY_NAME = 1; |
| final int DATE_MODIFIED = 2; |
| } |
| |
| private void includeVideosBucket(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(VideosBucketQuery.BUCKET_ID); |
| final String docId = getDocIdForIdent(TYPE_VIDEOS_BUCKET, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, |
| cursor.getString(VideosBucketQuery.BUCKET_DISPLAY_NAME)); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| row.add(Document.COLUMN_LAST_MODIFIED, |
| cursor.getLong(VideosBucketQuery.DATE_MODIFIED) * DateUtils.SECOND_IN_MILLIS); |
| row.add(Document.COLUMN_FLAGS, Document.FLAG_DIR_PREFERS_GRID |
| | Document.FLAG_SUPPORTS_THUMBNAIL | Document.FLAG_DIR_PREFERS_LAST_MODIFIED); |
| } |
| |
| private interface VideoQuery { |
| final String[] PROJECTION = new String[] { |
| VideoColumns._ID, |
| VideoColumns.DISPLAY_NAME, |
| VideoColumns.MIME_TYPE, |
| VideoColumns.SIZE, |
| VideoColumns.DATE_MODIFIED }; |
| |
| final int _ID = 0; |
| final int DISPLAY_NAME = 1; |
| final int MIME_TYPE = 2; |
| final int SIZE = 3; |
| final int DATE_MODIFIED = 4; |
| } |
| |
| private void includeVideo(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(VideoQuery._ID); |
| final String docId = getDocIdForIdent(TYPE_VIDEO, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, cursor.getString(VideoQuery.DISPLAY_NAME)); |
| row.add(Document.COLUMN_SIZE, cursor.getLong(VideoQuery.SIZE)); |
| row.add(Document.COLUMN_MIME_TYPE, cursor.getString(VideoQuery.MIME_TYPE)); |
| row.add(Document.COLUMN_LAST_MODIFIED, |
| cursor.getLong(VideoQuery.DATE_MODIFIED) * DateUtils.SECOND_IN_MILLIS); |
| row.add(Document.COLUMN_FLAGS, |
| Document.FLAG_SUPPORTS_THUMBNAIL |
| | Document.FLAG_SUPPORTS_DELETE |
| | Document.FLAG_SUPPORTS_METADATA); |
| } |
| |
| private interface ArtistQuery { |
| final String[] PROJECTION = new String[] { |
| BaseColumns._ID, |
| ArtistColumns.ARTIST }; |
| |
| final int _ID = 0; |
| final int ARTIST = 1; |
| } |
| |
| private void includeArtist(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(ArtistQuery._ID); |
| final String docId = getDocIdForIdent(TYPE_ARTIST, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, |
| cleanUpMediaDisplayName(cursor.getString(ArtistQuery.ARTIST))); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| } |
| |
| private interface AlbumQuery { |
| final String[] PROJECTION = new String[] { |
| BaseColumns._ID, |
| AlbumColumns.ALBUM }; |
| |
| final int _ID = 0; |
| final int ALBUM = 1; |
| } |
| |
| private void includeAlbum(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(AlbumQuery._ID); |
| final String docId = getDocIdForIdent(TYPE_ALBUM, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, |
| cleanUpMediaDisplayName(cursor.getString(AlbumQuery.ALBUM))); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| } |
| |
| private interface SongQuery { |
| final String[] PROJECTION = new String[] { |
| AudioColumns._ID, |
| AudioColumns.TITLE, |
| AudioColumns.MIME_TYPE, |
| AudioColumns.SIZE, |
| AudioColumns.DATE_MODIFIED }; |
| |
| final int _ID = 0; |
| final int TITLE = 1; |
| final int MIME_TYPE = 2; |
| final int SIZE = 3; |
| final int DATE_MODIFIED = 4; |
| } |
| |
| private void includeAudio(MatrixCursor result, Cursor cursor) { |
| final long id = cursor.getLong(SongQuery._ID); |
| final String docId = getDocIdForIdent(TYPE_AUDIO, id); |
| |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, docId); |
| row.add(Document.COLUMN_DISPLAY_NAME, cursor.getString(SongQuery.TITLE)); |
| row.add(Document.COLUMN_SIZE, cursor.getLong(SongQuery.SIZE)); |
| row.add(Document.COLUMN_MIME_TYPE, cursor.getString(SongQuery.MIME_TYPE)); |
| row.add(Document.COLUMN_LAST_MODIFIED, |
| cursor.getLong(SongQuery.DATE_MODIFIED) * DateUtils.SECOND_IN_MILLIS); |
| row.add(Document.COLUMN_FLAGS, Document.FLAG_SUPPORTS_DELETE |
| | Document.FLAG_SUPPORTS_METADATA); |
| } |
| |
| private interface ImagesBucketThumbnailQuery { |
| final String[] PROJECTION = new String[] { |
| ImageColumns._ID, |
| ImageColumns.BUCKET_ID, |
| ImageColumns.DATE_MODIFIED }; |
| |
| final int _ID = 0; |
| final int BUCKET_ID = 1; |
| final int DATE_MODIFIED = 2; |
| } |
| |
| private long getImageForBucketCleared(long bucketId) throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| Cursor cursor = null; |
| try { |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImagesBucketThumbnailQuery.PROJECTION, ImageColumns.BUCKET_ID + "=" + bucketId, |
| null, ImageColumns.DATE_MODIFIED + " DESC"); |
| if (cursor.moveToFirst()) { |
| return cursor.getLong(ImagesBucketThumbnailQuery._ID); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| throw new FileNotFoundException("No video found for bucket"); |
| } |
| |
| private interface ImageThumbnailQuery { |
| final String[] PROJECTION = new String[] { |
| Images.Thumbnails.DATA }; |
| |
| final int _DATA = 0; |
| } |
| |
| private ParcelFileDescriptor openImageThumbnailCleared(long id, CancellationSignal signal) |
| throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| |
| Cursor cursor = null; |
| try { |
| cursor = resolver.query(Images.Thumbnails.EXTERNAL_CONTENT_URI, |
| ImageThumbnailQuery.PROJECTION, Images.Thumbnails.IMAGE_ID + "=" + id, null, |
| null, signal); |
| if (cursor.moveToFirst()) { |
| final String data = cursor.getString(ImageThumbnailQuery._DATA); |
| return ParcelFileDescriptor.open( |
| new File(data), ParcelFileDescriptor.MODE_READ_ONLY); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| return null; |
| } |
| |
| private AssetFileDescriptor openOrCreateImageThumbnailCleared( |
| long id, CancellationSignal signal) throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| |
| ParcelFileDescriptor pfd = openImageThumbnailCleared(id, signal); |
| if (pfd == null) { |
| // No thumbnail yet, so generate. This is messy, since we drop the |
| // Bitmap on the floor, but its the least-complicated way. |
| final BitmapFactory.Options opts = new BitmapFactory.Options(); |
| opts.inJustDecodeBounds = true; |
| Images.Thumbnails.getThumbnail(resolver, id, Images.Thumbnails.MINI_KIND, opts); |
| |
| pfd = openImageThumbnailCleared(id, signal); |
| } |
| |
| if (pfd == null) { |
| // Phoey, fallback to full image |
| final Uri fullUri = ContentUris.withAppendedId(Images.Media.EXTERNAL_CONTENT_URI, id); |
| pfd = resolver.openFileDescriptor(fullUri, "r", signal); |
| } |
| |
| final int orientation = queryOrientationForImage(id, signal); |
| final Bundle extras; |
| if (orientation != 0) { |
| extras = new Bundle(1); |
| extras.putInt(DocumentsContract.EXTRA_ORIENTATION, orientation); |
| } else { |
| extras = null; |
| } |
| |
| return new AssetFileDescriptor(pfd, 0, AssetFileDescriptor.UNKNOWN_LENGTH, extras); |
| } |
| |
| private interface VideosBucketThumbnailQuery { |
| final String[] PROJECTION = new String[] { |
| VideoColumns._ID, |
| VideoColumns.BUCKET_ID, |
| VideoColumns.DATE_MODIFIED }; |
| |
| final int _ID = 0; |
| final int BUCKET_ID = 1; |
| final int DATE_MODIFIED = 2; |
| } |
| |
| private long getVideoForBucketCleared(long bucketId) |
| throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| Cursor cursor = null; |
| try { |
| cursor = resolver.query(Video.Media.EXTERNAL_CONTENT_URI, |
| VideosBucketThumbnailQuery.PROJECTION, VideoColumns.BUCKET_ID + "=" + bucketId, |
| null, VideoColumns.DATE_MODIFIED + " DESC"); |
| if (cursor.moveToFirst()) { |
| return cursor.getLong(VideosBucketThumbnailQuery._ID); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| throw new FileNotFoundException("No video found for bucket"); |
| } |
| |
| private interface VideoThumbnailQuery { |
| final String[] PROJECTION = new String[] { |
| Video.Thumbnails.DATA }; |
| |
| final int _DATA = 0; |
| } |
| |
| private AssetFileDescriptor openVideoThumbnailCleared(long id, CancellationSignal signal) |
| throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| Cursor cursor = null; |
| try { |
| cursor = resolver.query(Video.Thumbnails.EXTERNAL_CONTENT_URI, |
| VideoThumbnailQuery.PROJECTION, Video.Thumbnails.VIDEO_ID + "=" + id, null, |
| null, signal); |
| if (cursor.moveToFirst()) { |
| final String data = cursor.getString(VideoThumbnailQuery._DATA); |
| return new AssetFileDescriptor(ParcelFileDescriptor.open( |
| new File(data), ParcelFileDescriptor.MODE_READ_ONLY), 0, |
| AssetFileDescriptor.UNKNOWN_LENGTH); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| return null; |
| } |
| |
| private AssetFileDescriptor openOrCreateVideoThumbnailCleared( |
| long id, CancellationSignal signal) throws FileNotFoundException { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| |
| AssetFileDescriptor afd = openVideoThumbnailCleared(id, signal); |
| if (afd == null) { |
| // No thumbnail yet, so generate. This is messy, since we drop the |
| // Bitmap on the floor, but its the least-complicated way. |
| final BitmapFactory.Options opts = new BitmapFactory.Options(); |
| opts.inJustDecodeBounds = true; |
| Video.Thumbnails.getThumbnail(resolver, id, Video.Thumbnails.MINI_KIND, opts); |
| |
| afd = openVideoThumbnailCleared(id, signal); |
| } |
| |
| return afd; |
| } |
| |
| private interface ImageOrientationQuery { |
| final String[] PROJECTION = new String[] { |
| ImageColumns.ORIENTATION }; |
| |
| final int ORIENTATION = 0; |
| } |
| |
| private int queryOrientationForImage(long id, CancellationSignal signal) { |
| final ContentResolver resolver = getContext().getContentResolver(); |
| |
| Cursor cursor = null; |
| try { |
| cursor = resolver.query(Images.Media.EXTERNAL_CONTENT_URI, |
| ImageOrientationQuery.PROJECTION, ImageColumns._ID + "=" + id, null, null, |
| signal); |
| if (cursor.moveToFirst()) { |
| return cursor.getInt(ImageOrientationQuery.ORIENTATION); |
| } else { |
| Log.w(TAG, "Missing orientation data for " + id); |
| return 0; |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| } |
| |
| private String cleanUpMediaDisplayName(String displayName) { |
| if (!MediaStore.UNKNOWN_STRING.equals(displayName)) { |
| return displayName; |
| } |
| return getContext().getResources().getString(com.android.internal.R.string.unknownName); |
| } |
| } |
