| /* |
| * Copyright (C) 2007 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 android.provider; |
| |
| import android.annotation.SdkConstant; |
| import android.annotation.SdkConstant.SdkConstantType; |
| import android.content.ContentResolver; |
| import android.content.ContentUris; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.database.Cursor; |
| import android.database.DatabaseUtils; |
| import android.database.sqlite.SQLiteException; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Matrix; |
| import android.media.MiniThumbFile; |
| import android.media.ThumbnailUtils; |
| import android.net.Uri; |
| import android.os.Environment; |
| import android.os.ParcelFileDescriptor; |
| import android.service.media.CameraPrewarmService; |
| import android.util.Log; |
| |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| |
| /** |
| * The Media provider contains meta data for all available media on both internal |
| * and external storage devices. |
| */ |
| public final class MediaStore { |
| private final static String TAG = "MediaStore"; |
| |
| public static final String AUTHORITY = "media"; |
| |
| private static final String CONTENT_AUTHORITY_SLASH = "content://" + AUTHORITY + "/"; |
| |
| /** |
| * Broadcast Action: A broadcast to indicate the end of an MTP session with the host. |
| * This broadcast is only sent if MTP activity has modified the media database during the |
| * most recent MTP session. |
| * |
| * @hide |
| */ |
| public static final String ACTION_MTP_SESSION_END = "android.provider.action.MTP_SESSION_END"; |
| |
| /** |
| * The method name used by the media scanner and mtp to tell the media provider to |
| * rescan and reclassify that have become unhidden because of renaming folders or |
| * removing nomedia files |
| * @hide |
| */ |
| public static final String UNHIDE_CALL = "unhide"; |
| |
| /** |
| * This is for internal use by the media scanner only. |
| * Name of the (optional) Uri parameter that determines whether to skip deleting |
| * the file pointed to by the _data column, when deleting the database entry. |
| * The only appropriate value for this parameter is "false", in which case the |
| * delete will be skipped. Note especially that setting this to true, or omitting |
| * the parameter altogether, will perform the default action, which is different |
| * for different types of media. |
| * @hide |
| */ |
| public static final String PARAM_DELETE_DATA = "deletedata"; |
| |
| /** |
| * Activity Action: Launch a music player. |
| * The activity should be able to play, browse, or manipulate music files stored on the device. |
| * |
| * @deprecated Use {@link android.content.Intent#CATEGORY_APP_MUSIC} instead. |
| */ |
| @Deprecated |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_MUSIC_PLAYER = "android.intent.action.MUSIC_PLAYER"; |
| |
| /** |
| * Activity Action: Perform a search for media. |
| * Contains at least the {@link android.app.SearchManager#QUERY} extra. |
| * May also contain any combination of the following extras: |
| * EXTRA_MEDIA_ARTIST, EXTRA_MEDIA_ALBUM, EXTRA_MEDIA_TITLE, EXTRA_MEDIA_FOCUS |
| * |
| * @see android.provider.MediaStore#EXTRA_MEDIA_ARTIST |
| * @see android.provider.MediaStore#EXTRA_MEDIA_ALBUM |
| * @see android.provider.MediaStore#EXTRA_MEDIA_TITLE |
| * @see android.provider.MediaStore#EXTRA_MEDIA_FOCUS |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_MEDIA_SEARCH = "android.intent.action.MEDIA_SEARCH"; |
| |
| /** |
| * An intent to perform a search for music media and automatically play content from the |
| * result when possible. This can be fired, for example, by the result of a voice recognition |
| * command to listen to music. |
| * <p>This intent always includes the {@link android.provider.MediaStore#EXTRA_MEDIA_FOCUS} |
| * and {@link android.app.SearchManager#QUERY} extras. The |
| * {@link android.provider.MediaStore#EXTRA_MEDIA_FOCUS} extra determines the search mode, and |
| * the value of the {@link android.app.SearchManager#QUERY} extra depends on the search mode. |
| * For more information about the search modes for this intent, see |
| * <a href="{@docRoot}guide/components/intents-common.html#PlaySearch">Play music based |
| * on a search query</a> in <a href="{@docRoot}guide/components/intents-common.html">Common |
| * Intents</a>.</p> |
| * |
| * <p>This intent makes the most sense for apps that can support large-scale search of music, |
| * such as services connected to an online database of music which can be streamed and played |
| * on the device.</p> |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_MEDIA_PLAY_FROM_SEARCH = |
| "android.media.action.MEDIA_PLAY_FROM_SEARCH"; |
| |
| /** |
| * An intent to perform a search for readable media and automatically play content from the |
| * result when possible. This can be fired, for example, by the result of a voice recognition |
| * command to read a book or magazine. |
| * <p> |
| * Contains the {@link android.app.SearchManager#QUERY} extra, which is a string that can |
| * contain any type of unstructured text search, like the name of a book or magazine, an author |
| * a genre, a publisher, or any combination of these. |
| * <p> |
| * Because this intent includes an open-ended unstructured search string, it makes the most |
| * sense for apps that can support large-scale search of text media, such as services connected |
| * to an online database of books and/or magazines which can be read on the device. |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_TEXT_OPEN_FROM_SEARCH = |
| "android.media.action.TEXT_OPEN_FROM_SEARCH"; |
| |
| /** |
| * An intent to perform a search for video media and automatically play content from the |
| * result when possible. This can be fired, for example, by the result of a voice recognition |
| * command to play movies. |
| * <p> |
| * Contains the {@link android.app.SearchManager#QUERY} extra, which is a string that can |
| * contain any type of unstructured video search, like the name of a movie, one or more actors, |
| * a genre, or any combination of these. |
| * <p> |
| * Because this intent includes an open-ended unstructured search string, it makes the most |
| * sense for apps that can support large-scale search of video, such as services connected to an |
| * online database of videos which can be streamed and played on the device. |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_VIDEO_PLAY_FROM_SEARCH = |
| "android.media.action.VIDEO_PLAY_FROM_SEARCH"; |
| |
| /** |
| * The name of the Intent-extra used to define the artist |
| */ |
| public static final String EXTRA_MEDIA_ARTIST = "android.intent.extra.artist"; |
| /** |
| * The name of the Intent-extra used to define the album |
| */ |
| public static final String EXTRA_MEDIA_ALBUM = "android.intent.extra.album"; |
| /** |
| * The name of the Intent-extra used to define the song title |
| */ |
| public static final String EXTRA_MEDIA_TITLE = "android.intent.extra.title"; |
| /** |
| * The name of the Intent-extra used to define the genre. |
| */ |
| public static final String EXTRA_MEDIA_GENRE = "android.intent.extra.genre"; |
| /** |
| * The name of the Intent-extra used to define the playlist. |
| */ |
| public static final String EXTRA_MEDIA_PLAYLIST = "android.intent.extra.playlist"; |
| /** |
| * The name of the Intent-extra used to define the radio channel. |
| */ |
| public static final String EXTRA_MEDIA_RADIO_CHANNEL = "android.intent.extra.radio_channel"; |
| /** |
| * The name of the Intent-extra used to define the search focus. The search focus |
| * indicates whether the search should be for things related to the artist, album |
| * or song that is identified by the other extras. |
| */ |
| public static final String EXTRA_MEDIA_FOCUS = "android.intent.extra.focus"; |
| |
| /** |
| * The name of the Intent-extra used to control the orientation of a ViewImage or a MovieView. |
| * This is an int property that overrides the activity's requestedOrientation. |
| * @see android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED |
| */ |
| public static final String EXTRA_SCREEN_ORIENTATION = "android.intent.extra.screenOrientation"; |
| |
| /** |
| * The name of an Intent-extra used to control the UI of a ViewImage. |
| * This is a boolean property that overrides the activity's default fullscreen state. |
| */ |
| public static final String EXTRA_FULL_SCREEN = "android.intent.extra.fullScreen"; |
| |
| /** |
| * The name of an Intent-extra used to control the UI of a ViewImage. |
| * This is a boolean property that specifies whether or not to show action icons. |
| */ |
| public static final String EXTRA_SHOW_ACTION_ICONS = "android.intent.extra.showActionIcons"; |
| |
| /** |
| * The name of the Intent-extra used to control the onCompletion behavior of a MovieView. |
| * This is a boolean property that specifies whether or not to finish the MovieView activity |
| * when the movie completes playing. The default value is true, which means to automatically |
| * exit the movie player activity when the movie completes playing. |
| */ |
| public static final String EXTRA_FINISH_ON_COMPLETION = "android.intent.extra.finishOnCompletion"; |
| |
| /** |
| * The name of the Intent action used to launch a camera in still image mode. |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_STILL_IMAGE_CAMERA = "android.media.action.STILL_IMAGE_CAMERA"; |
| |
| /** |
| * Name under which an activity handling {@link #INTENT_ACTION_STILL_IMAGE_CAMERA} or |
| * {@link #INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE} publishes the service name for its prewarm |
| * service. |
| * <p> |
| * This meta-data should reference the fully qualified class name of the prewarm service |
| * extending {@link CameraPrewarmService}. |
| * <p> |
| * The prewarm service will get bound and receive a prewarm signal |
| * {@link CameraPrewarmService#onPrewarm()} when a camera launch intent fire might be imminent. |
| * An application implementing a prewarm service should do the absolute minimum amount of work |
| * to initialize the camera in order to reduce startup time in likely case that shortly after a |
| * camera launch intent would be sent. |
| * <p> |
| * If the camera launch intent gets fired shortly after, the service will be unbound |
| * asynchronously, without receiving |
| */ |
| public static final String META_DATA_STILL_IMAGE_CAMERA_PREWARM_SERVICE = |
| "android.media.still_image_camera_preview_service"; |
| |
| /** |
| * The name of the Intent action used to launch a camera in still image mode |
| * for use when the device is secured (e.g. with a pin, password, pattern, |
| * or face unlock). Applications responding to this intent must not expose |
| * any personal content like existing photos or videos on the device. The |
| * applications should be careful not to share any photo or video with other |
| * applications or internet. The activity should use {@link |
| * android.view.WindowManager.LayoutParams#FLAG_SHOW_WHEN_LOCKED} to display |
| * on top of the lock screen while secured. There is no activity stack when |
| * this flag is used, so launching more than one activity is strongly |
| * discouraged. |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE = |
| "android.media.action.STILL_IMAGE_CAMERA_SECURE"; |
| |
| /** |
| * The name of the Intent action used to launch a camera in video mode. |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String INTENT_ACTION_VIDEO_CAMERA = "android.media.action.VIDEO_CAMERA"; |
| |
| /** |
| * Standard Intent action that can be sent to have the camera application |
| * capture an image and return it. |
| * <p> |
| * The caller may pass an extra EXTRA_OUTPUT to control where this image will be written. |
| * If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap |
| * object in the extra field. This is useful for applications that only need a small image. |
| * If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri |
| * value of EXTRA_OUTPUT. |
| * As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this uri can also be supplied through |
| * {@link android.content.Intent#setClipData(ClipData)}. If using this approach, you still must |
| * supply the uri through the EXTRA_OUTPUT field for compatibility with old applications. |
| * If you don't set a ClipData, it will be copied there for you when calling |
| * {@link Context#startActivity(Intent)}. |
| * @see #EXTRA_OUTPUT |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public final static String ACTION_IMAGE_CAPTURE = "android.media.action.IMAGE_CAPTURE"; |
| |
| /** |
| * Intent action that can be sent to have the camera application capture an image and return |
| * it when the device is secured (e.g. with a pin, password, pattern, or face unlock). |
| * Applications responding to this intent must not expose any personal content like existing |
| * photos or videos on the device. The applications should be careful not to share any photo |
| * or video with other applications or internet. The activity should use {@link |
| * android.view.WindowManager.LayoutParams#FLAG_SHOW_WHEN_LOCKED} to display on top of the |
| * lock screen while secured. There is no activity stack when this flag is used, so |
| * launching more than one activity is strongly discouraged. |
| * <p> |
| * The caller may pass an extra EXTRA_OUTPUT to control where this image will be written. |
| * If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap |
| * object in the extra field. This is useful for applications that only need a small image. |
| * If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri |
| * value of EXTRA_OUTPUT. |
| * As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this uri can also be supplied through |
| * {@link android.content.Intent#setClipData(ClipData)}. If using this approach, you still must |
| * supply the uri through the EXTRA_OUTPUT field for compatibility with old applications. |
| * If you don't set a ClipData, it will be copied there for you when calling |
| * {@link Context#startActivity(Intent)}. |
| * |
| * @see #ACTION_IMAGE_CAPTURE |
| * @see #EXTRA_OUTPUT |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String ACTION_IMAGE_CAPTURE_SECURE = |
| "android.media.action.IMAGE_CAPTURE_SECURE"; |
| |
| /** |
| * Standard Intent action that can be sent to have the camera application |
| * capture a video and return it. |
| * <p> |
| * The caller may pass in an extra EXTRA_VIDEO_QUALITY to control the video quality. |
| * <p> |
| * The caller may pass in an extra EXTRA_OUTPUT to control |
| * where the video is written. If EXTRA_OUTPUT is not present the video will be |
| * written to the standard location for videos, and the Uri of that location will be |
| * returned in the data field of the Uri. |
| * As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this uri can also be supplied through |
| * {@link android.content.Intent#setClipData(ClipData)}. If using this approach, you still must |
| * supply the uri through the EXTRA_OUTPUT field for compatibility with old applications. |
| * If you don't set a ClipData, it will be copied there for you when calling |
| * {@link Context#startActivity(Intent)}. |
| * @see #EXTRA_OUTPUT |
| * @see #EXTRA_VIDEO_QUALITY |
| * @see #EXTRA_SIZE_LIMIT |
| * @see #EXTRA_DURATION_LIMIT |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public final static String ACTION_VIDEO_CAPTURE = "android.media.action.VIDEO_CAPTURE"; |
| |
| /** |
| * The name of the Intent-extra used to control the quality of a recorded video. This is an |
| * integer property. Currently value 0 means low quality, suitable for MMS messages, and |
| * value 1 means high quality. In the future other quality levels may be added. |
| */ |
| public final static String EXTRA_VIDEO_QUALITY = "android.intent.extra.videoQuality"; |
| |
| /** |
| * Specify the maximum allowed size. |
| */ |
| public final static String EXTRA_SIZE_LIMIT = "android.intent.extra.sizeLimit"; |
| |
| /** |
| * Specify the maximum allowed recording duration in seconds. |
| */ |
| public final static String EXTRA_DURATION_LIMIT = "android.intent.extra.durationLimit"; |
| |
| /** |
| * The name of the Intent-extra used to indicate a content resolver Uri to be used to |
| * store the requested image or video. |
| */ |
| public final static String EXTRA_OUTPUT = "output"; |
| |
| /** |
| * The string that is used when a media attribute is not known. For example, |
| * if an audio file does not have any meta data, the artist and album columns |
| * will be set to this value. |
| */ |
| public static final String UNKNOWN_STRING = "<unknown>"; |
| |
| /** |
| * Common fields for most MediaProvider tables |
| */ |
| |
| public interface MediaColumns extends BaseColumns { |
| /** |
| * The data stream for the file |
| * <P>Type: DATA STREAM</P> |
| */ |
| public static final String DATA = "_data"; |
| |
| /** |
| * The size of the file in bytes |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String SIZE = "_size"; |
| |
| /** |
| * The display name of the file |
| * <P>Type: TEXT</P> |
| */ |
| public static final String DISPLAY_NAME = "_display_name"; |
| |
| /** |
| * The title of the content |
| * <P>Type: TEXT</P> |
| */ |
| public static final String TITLE = "title"; |
| |
| /** |
| * The time the file was added to the media provider |
| * Units are seconds since 1970. |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String DATE_ADDED = "date_added"; |
| |
| /** |
| * The time the file was last modified |
| * Units are seconds since 1970. |
| * NOTE: This is for internal use by the media scanner. Do not modify this field. |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String DATE_MODIFIED = "date_modified"; |
| |
| /** |
| * The MIME type of the file |
| * <P>Type: TEXT</P> |
| */ |
| public static final String MIME_TYPE = "mime_type"; |
| |
| /** |
| * The MTP object handle of a newly transfered file. |
| * Used to pass the new file's object handle through the media scanner |
| * from MTP to the media provider |
| * For internal use only by MTP, media scanner and media provider. |
| * <P>Type: INTEGER</P> |
| * @hide |
| */ |
| public static final String MEDIA_SCANNER_NEW_OBJECT_ID = "media_scanner_new_object_id"; |
| |
| /** |
| * Non-zero if the media file is drm-protected |
| * <P>Type: INTEGER (boolean)</P> |
| * @hide |
| */ |
| public static final String IS_DRM = "is_drm"; |
| |
| /** |
| * The width of the image/video in pixels. |
| */ |
| public static final String WIDTH = "width"; |
| |
| /** |
| * The height of the image/video in pixels. |
| */ |
| public static final String HEIGHT = "height"; |
| } |
| |
| /** |
| * Media provider table containing an index of all files in the media storage, |
| * including non-media files. This should be used by applications that work with |
| * non-media file types (text, HTML, PDF, etc) as well as applications that need to |
| * work with multiple media file types in a single query. |
| */ |
| public static final class Files { |
| |
| /** |
| * Get the content:// style URI for the files table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the files table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/file"); |
| } |
| |
| /** |
| * Get the content:// style URI for a single row in the files table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @param rowId the file to get the URI for |
| * @return the URI to the files table on the given volume |
| */ |
| public static final Uri getContentUri(String volumeName, |
| long rowId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName |
| + "/file/" + rowId); |
| } |
| |
| /** |
| * For use only by the MTP implementation. |
| * @hide |
| */ |
| public static Uri getMtpObjectsUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/object"); |
| } |
| |
| /** |
| * For use only by the MTP implementation. |
| * @hide |
| */ |
| public static final Uri getMtpObjectsUri(String volumeName, |
| long fileId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName |
| + "/object/" + fileId); |
| } |
| |
| /** |
| * Used to implement the MTP GetObjectReferences and SetObjectReferences commands. |
| * @hide |
| */ |
| public static final Uri getMtpReferencesUri(String volumeName, |
| long fileId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName |
| + "/object/" + fileId + "/references"); |
| } |
| |
| /** |
| * Fields for master table for all media files. |
| * Table also contains MediaColumns._ID, DATA, SIZE and DATE_MODIFIED. |
| */ |
| public interface FileColumns extends MediaColumns { |
| /** |
| * The MTP storage ID of the file |
| * <P>Type: INTEGER</P> |
| * @hide |
| */ |
| public static final String STORAGE_ID = "storage_id"; |
| |
| /** |
| * The MTP format code of the file |
| * <P>Type: INTEGER</P> |
| * @hide |
| */ |
| public static final String FORMAT = "format"; |
| |
| /** |
| * The index of the parent directory of the file |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String PARENT = "parent"; |
| |
| /** |
| * The MIME type of the file |
| * <P>Type: TEXT</P> |
| */ |
| public static final String MIME_TYPE = "mime_type"; |
| |
| /** |
| * The title of the content |
| * <P>Type: TEXT</P> |
| */ |
| public static final String TITLE = "title"; |
| |
| /** |
| * The media type (audio, video, image or playlist) |
| * of the file, or 0 for not a media file |
| * <P>Type: TEXT</P> |
| */ |
| public static final String MEDIA_TYPE = "media_type"; |
| |
| /** |
| * Constant for the {@link #MEDIA_TYPE} column indicating that file |
| * is not an audio, image, video or playlist file. |
| */ |
| public static final int MEDIA_TYPE_NONE = 0; |
| |
| /** |
| * Constant for the {@link #MEDIA_TYPE} column indicating that file is an image file. |
| */ |
| public static final int MEDIA_TYPE_IMAGE = 1; |
| |
| /** |
| * Constant for the {@link #MEDIA_TYPE} column indicating that file is an audio file. |
| */ |
| public static final int MEDIA_TYPE_AUDIO = 2; |
| |
| /** |
| * Constant for the {@link #MEDIA_TYPE} column indicating that file is a video file. |
| */ |
| public static final int MEDIA_TYPE_VIDEO = 3; |
| |
| /** |
| * Constant for the {@link #MEDIA_TYPE} column indicating that file is a playlist file. |
| */ |
| public static final int MEDIA_TYPE_PLAYLIST = 4; |
| } |
| } |
| |
| /** |
| * This class is used internally by Images.Thumbnails and Video.Thumbnails, it's not intended |
| * to be accessed elsewhere. |
| */ |
| private static class InternalThumbnails implements BaseColumns { |
| private static final int MINI_KIND = 1; |
| private static final int FULL_SCREEN_KIND = 2; |
| private static final int MICRO_KIND = 3; |
| private static final String[] PROJECTION = new String[] {_ID, MediaColumns.DATA}; |
| static final int DEFAULT_GROUP_ID = 0; |
| private static final Object sThumbBufLock = new Object(); |
| private static byte[] sThumbBuf; |
| |
| private static Bitmap getMiniThumbFromFile( |
| Cursor c, Uri baseUri, ContentResolver cr, BitmapFactory.Options options) { |
| Bitmap bitmap = null; |
| Uri thumbUri = null; |
| try { |
| long thumbId = c.getLong(0); |
| String filePath = c.getString(1); |
| thumbUri = ContentUris.withAppendedId(baseUri, thumbId); |
| ParcelFileDescriptor pfdInput = cr.openFileDescriptor(thumbUri, "r"); |
| bitmap = BitmapFactory.decodeFileDescriptor( |
| pfdInput.getFileDescriptor(), null, options); |
| pfdInput.close(); |
| } catch (FileNotFoundException ex) { |
| Log.e(TAG, "couldn't open thumbnail " + thumbUri + "; " + ex); |
| } catch (IOException ex) { |
| Log.e(TAG, "couldn't open thumbnail " + thumbUri + "; " + ex); |
| } catch (OutOfMemoryError ex) { |
| Log.e(TAG, "failed to allocate memory for thumbnail " |
| + thumbUri + "; " + ex); |
| } |
| return bitmap; |
| } |
| |
| /** |
| * This method cancels the thumbnail request so clients waiting for getThumbnail will be |
| * interrupted and return immediately. Only the original process which made the getThumbnail |
| * requests can cancel their own requests. |
| * |
| * @param cr ContentResolver |
| * @param origId original image or video id. use -1 to cancel all requests. |
| * @param groupId the same groupId used in getThumbnail |
| * @param baseUri the base URI of requested thumbnails |
| */ |
| static void cancelThumbnailRequest(ContentResolver cr, long origId, Uri baseUri, |
| long groupId) { |
| Uri cancelUri = baseUri.buildUpon().appendQueryParameter("cancel", "1") |
| .appendQueryParameter("orig_id", String.valueOf(origId)) |
| .appendQueryParameter("group_id", String.valueOf(groupId)).build(); |
| Cursor c = null; |
| try { |
| c = cr.query(cancelUri, PROJECTION, null, null, null); |
| } |
| finally { |
| if (c != null) c.close(); |
| } |
| } |
| |
| /** |
| * This method ensure thumbnails associated with origId are generated and decode the byte |
| * stream from database (MICRO_KIND) or file (MINI_KIND). |
| * |
| * Special optimization has been done to avoid further IPC communication for MICRO_KIND |
| * thumbnails. |
| * |
| * @param cr ContentResolver |
| * @param origId original image or video id |
| * @param kind could be MINI_KIND or MICRO_KIND |
| * @param options this is only used for MINI_KIND when decoding the Bitmap |
| * @param baseUri the base URI of requested thumbnails |
| * @param groupId the id of group to which this request belongs |
| * @return Bitmap bitmap of specified thumbnail kind |
| */ |
| static Bitmap getThumbnail(ContentResolver cr, long origId, long groupId, int kind, |
| BitmapFactory.Options options, Uri baseUri, boolean isVideo) { |
| Bitmap bitmap = null; |
| // Log.v(TAG, "getThumbnail: origId="+origId+", kind="+kind+", isVideo="+isVideo); |
| // If the magic is non-zero, we simply return thumbnail if it does exist. |
| // querying MediaProvider and simply return thumbnail. |
| MiniThumbFile thumbFile = new MiniThumbFile(isVideo ? Video.Media.EXTERNAL_CONTENT_URI |
| : Images.Media.EXTERNAL_CONTENT_URI); |
| Cursor c = null; |
| try { |
| long magic = thumbFile.getMagic(origId); |
| if (magic != 0) { |
| if (kind == MICRO_KIND) { |
| synchronized (sThumbBufLock) { |
| if (sThumbBuf == null) { |
| sThumbBuf = new byte[MiniThumbFile.BYTES_PER_MINTHUMB]; |
| } |
| if (thumbFile.getMiniThumbFromFile(origId, sThumbBuf) != null) { |
| bitmap = BitmapFactory.decodeByteArray(sThumbBuf, 0, sThumbBuf.length); |
| if (bitmap == null) { |
| Log.w(TAG, "couldn't decode byte array."); |
| } |
| } |
| } |
| return bitmap; |
| } else if (kind == MINI_KIND) { |
| String column = isVideo ? "video_id=" : "image_id="; |
| c = cr.query(baseUri, PROJECTION, column + origId, null, null); |
| if (c != null && c.moveToFirst()) { |
| bitmap = getMiniThumbFromFile(c, baseUri, cr, options); |
| if (bitmap != null) { |
| return bitmap; |
| } |
| } |
| } |
| } |
| |
| Uri blockingUri = baseUri.buildUpon().appendQueryParameter("blocking", "1") |
| .appendQueryParameter("orig_id", String.valueOf(origId)) |
| .appendQueryParameter("group_id", String.valueOf(groupId)).build(); |
| if (c != null) c.close(); |
| c = cr.query(blockingUri, PROJECTION, null, null, null); |
| // This happens when original image/video doesn't exist. |
| if (c == null) return null; |
| |
| // Assuming thumbnail has been generated, at least original image exists. |
| if (kind == MICRO_KIND) { |
| synchronized (sThumbBufLock) { |
| if (sThumbBuf == null) { |
| sThumbBuf = new byte[MiniThumbFile.BYTES_PER_MINTHUMB]; |
| } |
| Arrays.fill(sThumbBuf, (byte)0); |
| if (thumbFile.getMiniThumbFromFile(origId, sThumbBuf) != null) { |
| bitmap = BitmapFactory.decodeByteArray(sThumbBuf, 0, sThumbBuf.length); |
| if (bitmap == null) { |
| Log.w(TAG, "couldn't decode byte array."); |
| } |
| } |
| } |
| } else if (kind == MINI_KIND) { |
| if (c.moveToFirst()) { |
| bitmap = getMiniThumbFromFile(c, baseUri, cr, options); |
| } |
| } else { |
| throw new IllegalArgumentException("Unsupported kind: " + kind); |
| } |
| |
| // We probably run out of space, so create the thumbnail in memory. |
| if (bitmap == null) { |
| Log.v(TAG, "Create the thumbnail in memory: origId=" + origId |
| + ", kind=" + kind + ", isVideo="+isVideo); |
| Uri uri = Uri.parse( |
| baseUri.buildUpon().appendPath(String.valueOf(origId)) |
| .toString().replaceFirst("thumbnails", "media")); |
| if (c != null) c.close(); |
| c = cr.query(uri, PROJECTION, null, null, null); |
| if (c == null || !c.moveToFirst()) { |
| return null; |
| } |
| String filePath = c.getString(1); |
| if (filePath != null) { |
| if (isVideo) { |
| bitmap = ThumbnailUtils.createVideoThumbnail(filePath, kind); |
| } else { |
| bitmap = ThumbnailUtils.createImageThumbnail(filePath, kind); |
| } |
| } |
| } |
| } catch (SQLiteException ex) { |
| Log.w(TAG, ex); |
| } finally { |
| if (c != null) c.close(); |
| // To avoid file descriptor leak in application process. |
| thumbFile.deactivate(); |
| thumbFile = null; |
| } |
| return bitmap; |
| } |
| } |
| |
| /** |
| * Contains meta data for all available images. |
| */ |
| public static final class Images { |
| public interface ImageColumns extends MediaColumns { |
| /** |
| * The description of the image |
| * <P>Type: TEXT</P> |
| */ |
| public static final String DESCRIPTION = "description"; |
| |
| /** |
| * The picasa id of the image |
| * <P>Type: TEXT</P> |
| */ |
| public static final String PICASA_ID = "picasa_id"; |
| |
| /** |
| * Whether the video should be published as public or private |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String IS_PRIVATE = "isprivate"; |
| |
| /** |
| * The latitude where the image was captured. |
| * <P>Type: DOUBLE</P> |
| */ |
| public static final String LATITUDE = "latitude"; |
| |
| /** |
| * The longitude where the image was captured. |
| * <P>Type: DOUBLE</P> |
| */ |
| public static final String LONGITUDE = "longitude"; |
| |
| /** |
| * The date & time that the image was taken in units |
| * of milliseconds since jan 1, 1970. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String DATE_TAKEN = "datetaken"; |
| |
| /** |
| * The orientation for the image expressed as degrees. |
| * Only degrees 0, 90, 180, 270 will work. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String ORIENTATION = "orientation"; |
| |
| /** |
| * The mini thumb id. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String MINI_THUMB_MAGIC = "mini_thumb_magic"; |
| |
| /** |
| * The bucket id of the image. This is a read-only property that |
| * is automatically computed from the DATA column. |
| * <P>Type: TEXT</P> |
| */ |
| public static final String BUCKET_ID = "bucket_id"; |
| |
| /** |
| * The bucket display name of the image. This is a read-only property that |
| * is automatically computed from the DATA column. |
| * <P>Type: TEXT</P> |
| */ |
| public static final String BUCKET_DISPLAY_NAME = "bucket_display_name"; |
| } |
| |
| public static final class Media implements ImageColumns { |
| public static final Cursor query(ContentResolver cr, Uri uri, String[] projection) { |
| return cr.query(uri, projection, null, null, DEFAULT_SORT_ORDER); |
| } |
| |
| public static final Cursor query(ContentResolver cr, Uri uri, String[] projection, |
| String where, String orderBy) { |
| return cr.query(uri, projection, where, |
| null, orderBy == null ? DEFAULT_SORT_ORDER : orderBy); |
| } |
| |
| public static final Cursor query(ContentResolver cr, Uri uri, String[] projection, |
| String selection, String [] selectionArgs, String orderBy) { |
| return cr.query(uri, projection, selection, |
| selectionArgs, orderBy == null ? DEFAULT_SORT_ORDER : orderBy); |
| } |
| |
| /** |
| * Retrieves an image for the given url as a {@link Bitmap}. |
| * |
| * @param cr The content resolver to use |
| * @param url The url of the image |
| * @throws FileNotFoundException |
| * @throws IOException |
| */ |
| public static final Bitmap getBitmap(ContentResolver cr, Uri url) |
| throws FileNotFoundException, IOException { |
| InputStream input = cr.openInputStream(url); |
| Bitmap bitmap = BitmapFactory.decodeStream(input); |
| input.close(); |
| return bitmap; |
| } |
| |
| /** |
| * Insert an image and create a thumbnail for it. |
| * |
| * @param cr The content resolver to use |
| * @param imagePath The path to the image to insert |
| * @param name The name of the image |
| * @param description The description of the image |
| * @return The URL to the newly created image |
| * @throws FileNotFoundException |
| */ |
| public static final String insertImage(ContentResolver cr, String imagePath, |
| String name, String description) throws FileNotFoundException { |
| // Check if file exists with a FileInputStream |
| FileInputStream stream = new FileInputStream(imagePath); |
| try { |
| Bitmap bm = BitmapFactory.decodeFile(imagePath); |
| String ret = insertImage(cr, bm, name, description); |
| bm.recycle(); |
| return ret; |
| } finally { |
| try { |
| stream.close(); |
| } catch (IOException e) { |
| } |
| } |
| } |
| |
| private static final Bitmap StoreThumbnail( |
| ContentResolver cr, |
| Bitmap source, |
| long id, |
| float width, float height, |
| int kind) { |
| // create the matrix to scale it |
| Matrix matrix = new Matrix(); |
| |
| float scaleX = width / source.getWidth(); |
| float scaleY = height / source.getHeight(); |
| |
| matrix.setScale(scaleX, scaleY); |
| |
| Bitmap thumb = Bitmap.createBitmap(source, 0, 0, |
| source.getWidth(), |
| source.getHeight(), matrix, |
| true); |
| |
| ContentValues values = new ContentValues(4); |
| values.put(Images.Thumbnails.KIND, kind); |
| values.put(Images.Thumbnails.IMAGE_ID, (int)id); |
| values.put(Images.Thumbnails.HEIGHT, thumb.getHeight()); |
| values.put(Images.Thumbnails.WIDTH, thumb.getWidth()); |
| |
| Uri url = cr.insert(Images.Thumbnails.EXTERNAL_CONTENT_URI, values); |
| |
| try { |
| OutputStream thumbOut = cr.openOutputStream(url); |
| |
| thumb.compress(Bitmap.CompressFormat.JPEG, 100, thumbOut); |
| thumbOut.close(); |
| return thumb; |
| } |
| catch (FileNotFoundException ex) { |
| return null; |
| } |
| catch (IOException ex) { |
| return null; |
| } |
| } |
| |
| /** |
| * Insert an image and create a thumbnail for it. |
| * |
| * @param cr The content resolver to use |
| * @param source The stream to use for the image |
| * @param title The name of the image |
| * @param description The description of the image |
| * @return The URL to the newly created image, or <code>null</code> if the image failed to be stored |
| * for any reason. |
| */ |
| public static final String insertImage(ContentResolver cr, Bitmap source, |
| String title, String description) { |
| ContentValues values = new ContentValues(); |
| values.put(Images.Media.TITLE, title); |
| values.put(Images.Media.DESCRIPTION, description); |
| values.put(Images.Media.MIME_TYPE, "image/jpeg"); |
| |
| Uri url = null; |
| String stringUrl = null; /* value to be returned */ |
| |
| try { |
| url = cr.insert(EXTERNAL_CONTENT_URI, values); |
| |
| if (source != null) { |
| OutputStream imageOut = cr.openOutputStream(url); |
| try { |
| source.compress(Bitmap.CompressFormat.JPEG, 50, imageOut); |
| } finally { |
| imageOut.close(); |
| } |
| |
| long id = ContentUris.parseId(url); |
| // Wait until MINI_KIND thumbnail is generated. |
| Bitmap miniThumb = Images.Thumbnails.getThumbnail(cr, id, |
| Images.Thumbnails.MINI_KIND, null); |
| // This is for backward compatibility. |
| Bitmap microThumb = StoreThumbnail(cr, miniThumb, id, 50F, 50F, |
| Images.Thumbnails.MICRO_KIND); |
| } else { |
| Log.e(TAG, "Failed to create thumbnail, removing original"); |
| cr.delete(url, null, null); |
| url = null; |
| } |
| } catch (Exception e) { |
| Log.e(TAG, "Failed to insert image", e); |
| if (url != null) { |
| cr.delete(url, null, null); |
| url = null; |
| } |
| } |
| |
| if (url != null) { |
| stringUrl = url.toString(); |
| } |
| |
| return stringUrl; |
| } |
| |
| /** |
| * Get the content:// style URI for the image media table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the image media table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/images/media"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type of of this directory of |
| * images. Note that each entry in this directory will have a standard |
| * image MIME type as appropriate -- for example, image/jpeg. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/image"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = ImageColumns.BUCKET_DISPLAY_NAME; |
| } |
| |
| /** |
| * This class allows developers to query and get two kinds of thumbnails: |
| * MINI_KIND: 512 x 384 thumbnail |
| * MICRO_KIND: 96 x 96 thumbnail |
| */ |
| public static class Thumbnails implements BaseColumns { |
| public static final Cursor query(ContentResolver cr, Uri uri, String[] projection) { |
| return cr.query(uri, projection, null, null, DEFAULT_SORT_ORDER); |
| } |
| |
| public static final Cursor queryMiniThumbnails(ContentResolver cr, Uri uri, int kind, |
| String[] projection) { |
| return cr.query(uri, projection, "kind = " + kind, null, DEFAULT_SORT_ORDER); |
| } |
| |
| public static final Cursor queryMiniThumbnail(ContentResolver cr, long origId, int kind, |
| String[] projection) { |
| return cr.query(EXTERNAL_CONTENT_URI, projection, |
| IMAGE_ID + " = " + origId + " AND " + KIND + " = " + |
| kind, null, null); |
| } |
| |
| /** |
| * This method cancels the thumbnail request so clients waiting for getThumbnail will be |
| * interrupted and return immediately. Only the original process which made the getThumbnail |
| * requests can cancel their own requests. |
| * |
| * @param cr ContentResolver |
| * @param origId original image id |
| */ |
| public static void cancelThumbnailRequest(ContentResolver cr, long origId) { |
| InternalThumbnails.cancelThumbnailRequest(cr, origId, EXTERNAL_CONTENT_URI, |
| InternalThumbnails.DEFAULT_GROUP_ID); |
| } |
| |
| /** |
| * This method checks if the thumbnails of the specified image (origId) has been created. |
| * It will be blocked until the thumbnails are generated. |
| * |
| * @param cr ContentResolver used to dispatch queries to MediaProvider. |
| * @param origId Original image id associated with thumbnail of interest. |
| * @param kind The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND. |
| * @param options this is only used for MINI_KIND when decoding the Bitmap |
| * @return A Bitmap instance. It could be null if the original image |
| * associated with origId doesn't exist or memory is not enough. |
| */ |
| public static Bitmap getThumbnail(ContentResolver cr, long origId, int kind, |
| BitmapFactory.Options options) { |
| return InternalThumbnails.getThumbnail(cr, origId, |
| InternalThumbnails.DEFAULT_GROUP_ID, kind, options, |
| EXTERNAL_CONTENT_URI, false); |
| } |
| |
| /** |
| * This method cancels the thumbnail request so clients waiting for getThumbnail will be |
| * interrupted and return immediately. Only the original process which made the getThumbnail |
| * requests can cancel their own requests. |
| * |
| * @param cr ContentResolver |
| * @param origId original image id |
| * @param groupId the same groupId used in getThumbnail. |
| */ |
| public static void cancelThumbnailRequest(ContentResolver cr, long origId, long groupId) { |
| InternalThumbnails.cancelThumbnailRequest(cr, origId, EXTERNAL_CONTENT_URI, groupId); |
| } |
| |
| /** |
| * This method checks if the thumbnails of the specified image (origId) has been created. |
| * It will be blocked until the thumbnails are generated. |
| * |
| * @param cr ContentResolver used to dispatch queries to MediaProvider. |
| * @param origId Original image id associated with thumbnail of interest. |
| * @param groupId the id of group to which this request belongs |
| * @param kind The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND. |
| * @param options this is only used for MINI_KIND when decoding the Bitmap |
| * @return A Bitmap instance. It could be null if the original image |
| * associated with origId doesn't exist or memory is not enough. |
| */ |
| public static Bitmap getThumbnail(ContentResolver cr, long origId, long groupId, |
| int kind, BitmapFactory.Options options) { |
| return InternalThumbnails.getThumbnail(cr, origId, groupId, kind, options, |
| EXTERNAL_CONTENT_URI, false); |
| } |
| |
| /** |
| * Get the content:// style URI for the image media table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the image media table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/images/thumbnails"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = "image_id ASC"; |
| |
| /** |
| * The data stream for the thumbnail |
| * <P>Type: DATA STREAM</P> |
| */ |
| public static final String DATA = "_data"; |
| |
| /** |
| * The original image for the thumbnal |
| * <P>Type: INTEGER (ID from Images table)</P> |
| */ |
| public static final String IMAGE_ID = "image_id"; |
| |
| /** |
| * The kind of the thumbnail |
| * <P>Type: INTEGER (One of the values below)</P> |
| */ |
| public static final String KIND = "kind"; |
| |
| public static final int MINI_KIND = 1; |
| public static final int FULL_SCREEN_KIND = 2; |
| public static final int MICRO_KIND = 3; |
| /** |
| * The blob raw data of thumbnail |
| * <P>Type: DATA STREAM</P> |
| */ |
| public static final String THUMB_DATA = "thumb_data"; |
| |
| /** |
| * The width of the thumbnal |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String WIDTH = "width"; |
| |
| /** |
| * The height of the thumbnail |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String HEIGHT = "height"; |
| } |
| } |
| |
| /** |
| * Container for all audio content. |
| */ |
| public static final class Audio { |
| /** |
| * Columns for audio file that show up in multiple tables. |
| */ |
| public interface AudioColumns extends MediaColumns { |
| |
| /** |
| * A non human readable key calculated from the TITLE, used for |
| * searching, sorting and grouping |
| * <P>Type: TEXT</P> |
| */ |
| public static final String TITLE_KEY = "title_key"; |
| |
| /** |
| * The duration of the audio file, in ms |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String DURATION = "duration"; |
| |
| /** |
| * The position, in ms, playback was at when playback for this file |
| * was last stopped. |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String BOOKMARK = "bookmark"; |
| |
| /** |
| * The id of the artist who created the audio file, if any |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String ARTIST_ID = "artist_id"; |
| |
| /** |
| * The artist who created the audio file, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ARTIST = "artist"; |
| |
| /** |
| * The artist credited for the album that contains the audio file |
| * <P>Type: TEXT</P> |
| * @hide |
| */ |
| public static final String ALBUM_ARTIST = "album_artist"; |
| |
| /** |
| * Whether the song is part of a compilation |
| * <P>Type: TEXT</P> |
| * @hide |
| */ |
| public static final String COMPILATION = "compilation"; |
| |
| /** |
| * A non human readable key calculated from the ARTIST, used for |
| * searching, sorting and grouping |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ARTIST_KEY = "artist_key"; |
| |
| /** |
| * The composer of the audio file, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String COMPOSER = "composer"; |
| |
| /** |
| * The id of the album the audio file is from, if any |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String ALBUM_ID = "album_id"; |
| |
| /** |
| * The album the audio file is from, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ALBUM = "album"; |
| |
| /** |
| * A non human readable key calculated from the ALBUM, used for |
| * searching, sorting and grouping |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ALBUM_KEY = "album_key"; |
| |
| /** |
| * The track number of this song on the album, if any. |
| * This number encodes both the track number and the |
| * disc number. For multi-disc sets, this number will |
| * be 1xxx for tracks on the first disc, 2xxx for tracks |
| * on the second disc, etc. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String TRACK = "track"; |
| |
| /** |
| * The year the audio file was recorded, if any |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String YEAR = "year"; |
| |
| /** |
| * Non-zero if the audio file is music |
| * <P>Type: INTEGER (boolean)</P> |
| */ |
| public static final String IS_MUSIC = "is_music"; |
| |
| /** |
| * Non-zero if the audio file is a podcast |
| * <P>Type: INTEGER (boolean)</P> |
| */ |
| public static final String IS_PODCAST = "is_podcast"; |
| |
| /** |
| * Non-zero if the audio file may be a ringtone |
| * <P>Type: INTEGER (boolean)</P> |
| */ |
| public static final String IS_RINGTONE = "is_ringtone"; |
| |
| /** |
| * Non-zero if the audio file may be an alarm |
| * <P>Type: INTEGER (boolean)</P> |
| */ |
| public static final String IS_ALARM = "is_alarm"; |
| |
| /** |
| * Non-zero if the audio file may be a notification sound |
| * <P>Type: INTEGER (boolean)</P> |
| */ |
| public static final String IS_NOTIFICATION = "is_notification"; |
| |
| /** |
| * The genre of the audio file, if any |
| * <P>Type: TEXT</P> |
| * Does not exist in the database - only used by the media scanner for inserts. |
| * @hide |
| */ |
| public static final String GENRE = "genre"; |
| } |
| |
| /** |
| * Converts a name to a "key" that can be used for grouping, sorting |
| * and searching. |
| * The rules that govern this conversion are: |
| * - remove 'special' characters like ()[]'!?., |
| * - remove leading/trailing spaces |
| * - convert everything to lowercase |
| * - remove leading "the ", "an " and "a " |
| * - remove trailing ", the|an|a" |
| * - remove accents. This step leaves us with CollationKey data, |
| * which is not human readable |
| * |
| * @param name The artist or album name to convert |
| * @return The "key" for the given name. |
| */ |
| public static String keyFor(String name) { |
| if (name != null) { |
| boolean sortfirst = false; |
| if (name.equals(UNKNOWN_STRING)) { |
| return "\001"; |
| } |
| // Check if the first character is \001. We use this to |
| // force sorting of certain special files, like the silent ringtone. |
| if (name.startsWith("\001")) { |
| sortfirst = true; |
| } |
| name = name.trim().toLowerCase(); |
| if (name.startsWith("the ")) { |
| name = name.substring(4); |
| } |
| if (name.startsWith("an ")) { |
| name = name.substring(3); |
| } |
| if (name.startsWith("a ")) { |
| name = name.substring(2); |
| } |
| if (name.endsWith(", the") || name.endsWith(",the") || |
| name.endsWith(", an") || name.endsWith(",an") || |
| name.endsWith(", a") || name.endsWith(",a")) { |
| name = name.substring(0, name.lastIndexOf(',')); |
| } |
| name = name.replaceAll("[\\[\\]\\(\\)\"'.,?!]", "").trim(); |
| if (name.length() > 0) { |
| // Insert a separator between the characters to avoid |
| // matches on a partial character. If we ever change |
| // to start-of-word-only matches, this can be removed. |
| StringBuilder b = new StringBuilder(); |
| b.append('.'); |
| int nl = name.length(); |
| for (int i = 0; i < nl; i++) { |
| b.append(name.charAt(i)); |
| b.append('.'); |
| } |
| name = b.toString(); |
| String key = DatabaseUtils.getCollationKey(name); |
| if (sortfirst) { |
| key = "\001" + key; |
| } |
| return key; |
| } else { |
| return ""; |
| } |
| } |
| return null; |
| } |
| |
| public static final class Media implements AudioColumns { |
| |
| private static final String[] EXTERNAL_PATHS; |
| |
| static { |
| String secondary_storage = System.getenv("SECONDARY_STORAGE"); |
| if (secondary_storage != null) { |
| EXTERNAL_PATHS = secondary_storage.split(":"); |
| } else { |
| EXTERNAL_PATHS = new String[0]; |
| } |
| } |
| |
| /** |
| * Get the content:// style URI for the audio media table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the audio media table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/audio/media"); |
| } |
| |
| public static Uri getContentUriForPath(String path) { |
| for (String ep : EXTERNAL_PATHS) { |
| if (path.startsWith(ep)) { |
| return EXTERNAL_CONTENT_URI; |
| } |
| } |
| |
| return (path.startsWith(Environment.getExternalStorageDirectory().getPath()) ? |
| EXTERNAL_CONTENT_URI : INTERNAL_CONTENT_URI); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type for this table. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/audio"; |
| |
| /** |
| * The MIME type for an audio track. |
| */ |
| public static final String ENTRY_CONTENT_TYPE = "vnd.android.cursor.item/audio"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = TITLE_KEY; |
| |
| /** |
| * Activity Action: Start SoundRecorder application. |
| * <p>Input: nothing. |
| * <p>Output: An uri to the recorded sound stored in the Media Library |
| * if the recording was successful. |
| * May also contain the extra EXTRA_MAX_BYTES. |
| * @see #EXTRA_MAX_BYTES |
| */ |
| public static final String RECORD_SOUND_ACTION = |
| "android.provider.MediaStore.RECORD_SOUND"; |
| |
| /** |
| * The name of the Intent-extra used to define a maximum file size for |
| * a recording made by the SoundRecorder application. |
| * |
| * @see #RECORD_SOUND_ACTION |
| */ |
| public static final String EXTRA_MAX_BYTES = |
| "android.provider.MediaStore.extra.MAX_BYTES"; |
| } |
| |
| /** |
| * Columns representing an audio genre |
| */ |
| public interface GenresColumns { |
| /** |
| * The name of the genre |
| * <P>Type: TEXT</P> |
| */ |
| public static final String NAME = "name"; |
| } |
| |
| /** |
| * Contains all genres for audio files |
| */ |
| public static final class Genres implements BaseColumns, GenresColumns { |
| /** |
| * Get the content:// style URI for the audio genres table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the audio genres table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/audio/genres"); |
| } |
| |
| /** |
| * Get the content:// style URI for querying the genres of an audio file. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @param audioId the ID of the audio file for which to retrieve the genres |
| * @return the URI to for querying the genres for the audio file |
| * with the given the volume and audioID |
| */ |
| public static Uri getContentUriForAudioId(String volumeName, int audioId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/audio/media/" + audioId + "/genres"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type for this table. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/genre"; |
| |
| /** |
| * The MIME type for entries in this table. |
| */ |
| public static final String ENTRY_CONTENT_TYPE = "vnd.android.cursor.item/genre"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = NAME; |
| |
| /** |
| * Sub-directory of each genre containing all members. |
| */ |
| public static final class Members implements AudioColumns { |
| |
| public static final Uri getContentUri(String volumeName, |
| long genreId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName |
| + "/audio/genres/" + genreId + "/members"); |
| } |
| |
| /** |
| * A subdirectory of each genre containing all member audio files. |
| */ |
| public static final String CONTENT_DIRECTORY = "members"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = TITLE_KEY; |
| |
| /** |
| * The ID of the audio file |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String AUDIO_ID = "audio_id"; |
| |
| /** |
| * The ID of the genre |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String GENRE_ID = "genre_id"; |
| } |
| } |
| |
| /** |
| * Columns representing a playlist |
| */ |
| public interface PlaylistsColumns { |
| /** |
| * The name of the playlist |
| * <P>Type: TEXT</P> |
| */ |
| public static final String NAME = "name"; |
| |
| /** |
| * The data stream for the playlist file |
| * <P>Type: DATA STREAM</P> |
| */ |
| public static final String DATA = "_data"; |
| |
| /** |
| * The time the file was added to the media provider |
| * Units are seconds since 1970. |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String DATE_ADDED = "date_added"; |
| |
| /** |
| * The time the file was last modified |
| * Units are seconds since 1970. |
| * NOTE: This is for internal use by the media scanner. Do not modify this field. |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String DATE_MODIFIED = "date_modified"; |
| } |
| |
| /** |
| * Contains playlists for audio files |
| */ |
| public static final class Playlists implements BaseColumns, |
| PlaylistsColumns { |
| /** |
| * Get the content:// style URI for the audio playlists table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the audio playlists table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/audio/playlists"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type for this table. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/playlist"; |
| |
| /** |
| * The MIME type for entries in this table. |
| */ |
| public static final String ENTRY_CONTENT_TYPE = "vnd.android.cursor.item/playlist"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = NAME; |
| |
| /** |
| * Sub-directory of each playlist containing all members. |
| */ |
| public static final class Members implements AudioColumns { |
| public static final Uri getContentUri(String volumeName, |
| long playlistId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName |
| + "/audio/playlists/" + playlistId + "/members"); |
| } |
| |
| /** |
| * Convenience method to move a playlist item to a new location |
| * @param res The content resolver to use |
| * @param playlistId The numeric id of the playlist |
| * @param from The position of the item to move |
| * @param to The position to move the item to |
| * @return true on success |
| */ |
| public static final boolean moveItem(ContentResolver res, |
| long playlistId, int from, int to) { |
| Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", |
| playlistId) |
| .buildUpon() |
| .appendEncodedPath(String.valueOf(from)) |
| .appendQueryParameter("move", "true") |
| .build(); |
| ContentValues values = new ContentValues(); |
| values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, to); |
| return res.update(uri, values, null, null) != 0; |
| } |
| |
| /** |
| * The ID within the playlist. |
| */ |
| public static final String _ID = "_id"; |
| |
| /** |
| * A subdirectory of each playlist containing all member audio |
| * files. |
| */ |
| public static final String CONTENT_DIRECTORY = "members"; |
| |
| /** |
| * The ID of the audio file |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String AUDIO_ID = "audio_id"; |
| |
| /** |
| * The ID of the playlist |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String PLAYLIST_ID = "playlist_id"; |
| |
| /** |
| * The order of the songs in the playlist |
| * <P>Type: INTEGER (long)></P> |
| */ |
| public static final String PLAY_ORDER = "play_order"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = PLAY_ORDER; |
| } |
| } |
| |
| /** |
| * Columns representing an artist |
| */ |
| public interface ArtistColumns { |
| /** |
| * The artist who created the audio file, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ARTIST = "artist"; |
| |
| /** |
| * A non human readable key calculated from the ARTIST, used for |
| * searching, sorting and grouping |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ARTIST_KEY = "artist_key"; |
| |
| /** |
| * The number of albums in the database for this artist |
| */ |
| public static final String NUMBER_OF_ALBUMS = "number_of_albums"; |
| |
| /** |
| * The number of albums in the database for this artist |
| */ |
| public static final String NUMBER_OF_TRACKS = "number_of_tracks"; |
| } |
| |
| /** |
| * Contains artists for audio files |
| */ |
| public static final class Artists implements BaseColumns, ArtistColumns { |
| /** |
| * Get the content:// style URI for the artists table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the audio artists table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/audio/artists"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type for this table. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/artists"; |
| |
| /** |
| * The MIME type for entries in this table. |
| */ |
| public static final String ENTRY_CONTENT_TYPE = "vnd.android.cursor.item/artist"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = ARTIST_KEY; |
| |
| /** |
| * Sub-directory of each artist containing all albums on which |
| * a song by the artist appears. |
| */ |
| public static final class Albums implements AlbumColumns { |
| public static final Uri getContentUri(String volumeName, |
| long artistId) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName |
| + "/audio/artists/" + artistId + "/albums"); |
| } |
| } |
| } |
| |
| /** |
| * Columns representing an album |
| */ |
| public interface AlbumColumns { |
| |
| /** |
| * The id for the album |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String ALBUM_ID = "album_id"; |
| |
| /** |
| * The album on which the audio file appears, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ALBUM = "album"; |
| |
| /** |
| * The artist whose songs appear on this album |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ARTIST = "artist"; |
| |
| /** |
| * The number of songs on this album |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String NUMBER_OF_SONGS = "numsongs"; |
| |
| /** |
| * This column is available when getting album info via artist, |
| * and indicates the number of songs on the album by the given |
| * artist. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String NUMBER_OF_SONGS_FOR_ARTIST = "numsongs_by_artist"; |
| |
| /** |
| * The year in which the earliest songs |
| * on this album were released. This will often |
| * be the same as {@link #LAST_YEAR}, but for compilation albums |
| * they might differ. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String FIRST_YEAR = "minyear"; |
| |
| /** |
| * The year in which the latest songs |
| * on this album were released. This will often |
| * be the same as {@link #FIRST_YEAR}, but for compilation albums |
| * they might differ. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String LAST_YEAR = "maxyear"; |
| |
| /** |
| * A non human readable key calculated from the ALBUM, used for |
| * searching, sorting and grouping |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ALBUM_KEY = "album_key"; |
| |
| /** |
| * Cached album art. |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ALBUM_ART = "album_art"; |
| } |
| |
| /** |
| * Contains artists for audio files |
| */ |
| public static final class Albums implements BaseColumns, AlbumColumns { |
| /** |
| * Get the content:// style URI for the albums table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the audio albums table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/audio/albums"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type for this table. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/albums"; |
| |
| /** |
| * The MIME type for entries in this table. |
| */ |
| public static final String ENTRY_CONTENT_TYPE = "vnd.android.cursor.item/album"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = ALBUM_KEY; |
| } |
| |
| public static final class Radio { |
| /** |
| * The MIME type for entries in this table. |
| */ |
| public static final String ENTRY_CONTENT_TYPE = "vnd.android.cursor.item/radio"; |
| |
| // Not instantiable. |
| private Radio() { } |
| } |
| } |
| |
| public static final class Video { |
| |
| /** |
| * The default sort order for this table. |
| */ |
| public static final String DEFAULT_SORT_ORDER = MediaColumns.DISPLAY_NAME; |
| |
| public static final Cursor query(ContentResolver cr, Uri uri, String[] projection) { |
| return cr.query(uri, projection, null, null, DEFAULT_SORT_ORDER); |
| } |
| |
| public interface VideoColumns extends MediaColumns { |
| |
| /** |
| * The duration of the video file, in ms |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String DURATION = "duration"; |
| |
| /** |
| * The artist who created the video file, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ARTIST = "artist"; |
| |
| /** |
| * The album the video file is from, if any |
| * <P>Type: TEXT</P> |
| */ |
| public static final String ALBUM = "album"; |
| |
| /** |
| * The resolution of the video file, formatted as "XxY" |
| * <P>Type: TEXT</P> |
| */ |
| public static final String RESOLUTION = "resolution"; |
| |
| /** |
| * The description of the video recording |
| * <P>Type: TEXT</P> |
| */ |
| public static final String DESCRIPTION = "description"; |
| |
| /** |
| * Whether the video should be published as public or private |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String IS_PRIVATE = "isprivate"; |
| |
| /** |
| * The user-added tags associated with a video |
| * <P>Type: TEXT</P> |
| */ |
| public static final String TAGS = "tags"; |
| |
| /** |
| * The YouTube category of the video |
| * <P>Type: TEXT</P> |
| */ |
| public static final String CATEGORY = "category"; |
| |
| /** |
| * The language of the video |
| * <P>Type: TEXT</P> |
| */ |
| public static final String LANGUAGE = "language"; |
| |
| /** |
| * The latitude where the video was captured. |
| * <P>Type: DOUBLE</P> |
| */ |
| public static final String LATITUDE = "latitude"; |
| |
| /** |
| * The longitude where the video was captured. |
| * <P>Type: DOUBLE</P> |
| */ |
| public static final String LONGITUDE = "longitude"; |
| |
| /** |
| * The date & time that the video was taken in units |
| * of milliseconds since jan 1, 1970. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String DATE_TAKEN = "datetaken"; |
| |
| /** |
| * The mini thumb id. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String MINI_THUMB_MAGIC = "mini_thumb_magic"; |
| |
| /** |
| * The bucket id of the video. This is a read-only property that |
| * is automatically computed from the DATA column. |
| * <P>Type: TEXT</P> |
| */ |
| public static final String BUCKET_ID = "bucket_id"; |
| |
| /** |
| * The bucket display name of the video. This is a read-only property that |
| * is automatically computed from the DATA column. |
| * <P>Type: TEXT</P> |
| */ |
| public static final String BUCKET_DISPLAY_NAME = "bucket_display_name"; |
| |
| /** |
| * The bookmark for the video. Time in ms. Represents the location in the video that the |
| * video should start playing at the next time it is opened. If the value is null or |
| * out of the range 0..DURATION-1 then the video should start playing from the |
| * beginning. |
| * <P>Type: INTEGER</P> |
| */ |
| public static final String BOOKMARK = "bookmark"; |
| } |
| |
| public static final class Media implements VideoColumns { |
| /** |
| * Get the content:// style URI for the video media table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the video media table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/video/media"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The MIME type for this table. |
| */ |
| public static final String CONTENT_TYPE = "vnd.android.cursor.dir/video"; |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = TITLE; |
| } |
| |
| /** |
| * This class allows developers to query and get two kinds of thumbnails: |
| * MINI_KIND: 512 x 384 thumbnail |
| * MICRO_KIND: 96 x 96 thumbnail |
| * |
| */ |
| public static class Thumbnails implements BaseColumns { |
| /** |
| * This method cancels the thumbnail request so clients waiting for getThumbnail will be |
| * interrupted and return immediately. Only the original process which made the getThumbnail |
| * requests can cancel their own requests. |
| * |
| * @param cr ContentResolver |
| * @param origId original video id |
| */ |
| public static void cancelThumbnailRequest(ContentResolver cr, long origId) { |
| InternalThumbnails.cancelThumbnailRequest(cr, origId, EXTERNAL_CONTENT_URI, |
| InternalThumbnails.DEFAULT_GROUP_ID); |
| } |
| |
| /** |
| * This method checks if the thumbnails of the specified image (origId) has been created. |
| * It will be blocked until the thumbnails are generated. |
| * |
| * @param cr ContentResolver used to dispatch queries to MediaProvider. |
| * @param origId Original image id associated with thumbnail of interest. |
| * @param kind The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND. |
| * @param options this is only used for MINI_KIND when decoding the Bitmap |
| * @return A Bitmap instance. It could be null if the original image |
| * associated with origId doesn't exist or memory is not enough. |
| */ |
| public static Bitmap getThumbnail(ContentResolver cr, long origId, int kind, |
| BitmapFactory.Options options) { |
| return InternalThumbnails.getThumbnail(cr, origId, |
| InternalThumbnails.DEFAULT_GROUP_ID, kind, options, |
| EXTERNAL_CONTENT_URI, true); |
| } |
| |
| /** |
| * This method checks if the thumbnails of the specified image (origId) has been created. |
| * It will be blocked until the thumbnails are generated. |
| * |
| * @param cr ContentResolver used to dispatch queries to MediaProvider. |
| * @param origId Original image id associated with thumbnail of interest. |
| * @param groupId the id of group to which this request belongs |
| * @param kind The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND |
| * @param options this is only used for MINI_KIND when decoding the Bitmap |
| * @return A Bitmap instance. It could be null if the original image associated with |
| * origId doesn't exist or memory is not enough. |
| */ |
| public static Bitmap getThumbnail(ContentResolver cr, long origId, long groupId, |
| int kind, BitmapFactory.Options options) { |
| return InternalThumbnails.getThumbnail(cr, origId, groupId, kind, options, |
| EXTERNAL_CONTENT_URI, true); |
| } |
| |
| /** |
| * This method cancels the thumbnail request so clients waiting for getThumbnail will be |
| * interrupted and return immediately. Only the original process which made the getThumbnail |
| * requests can cancel their own requests. |
| * |
| * @param cr ContentResolver |
| * @param origId original video id |
| * @param groupId the same groupId used in getThumbnail. |
| */ |
| public static void cancelThumbnailRequest(ContentResolver cr, long origId, long groupId) { |
| InternalThumbnails.cancelThumbnailRequest(cr, origId, EXTERNAL_CONTENT_URI, groupId); |
| } |
| |
| /** |
| * Get the content:// style URI for the image media table on the |
| * given volume. |
| * |
| * @param volumeName the name of the volume to get the URI for |
| * @return the URI to the image media table on the given volume |
| */ |
| public static Uri getContentUri(String volumeName) { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + volumeName + |
| "/video/thumbnails"); |
| } |
| |
| /** |
| * The content:// style URI for the internal storage. |
| */ |
| public static final Uri INTERNAL_CONTENT_URI = |
| getContentUri("internal"); |
| |
| /** |
| * The content:// style URI for the "primary" external storage |
| * volume. |
| */ |
| public static final Uri EXTERNAL_CONTENT_URI = |
| getContentUri("external"); |
| |
| /** |
| * The default sort order for this table |
| */ |
| public static final String DEFAULT_SORT_ORDER = "video_id ASC"; |
| |
| /** |
| * The data stream for the thumbnail |
| * <P>Type: DATA STREAM</P> |
| */ |
| public static final String DATA = "_data"; |
| |
| /** |
| * The original image for the thumbnal |
| * <P>Type: INTEGER (ID from Video table)</P> |
| */ |
| public static final String VIDEO_ID = "video_id"; |
| |
| /** |
| * The kind of the thumbnail |
| * <P>Type: INTEGER (One of the values below)</P> |
| */ |
| public static final String KIND = "kind"; |
| |
| public static final int MINI_KIND = 1; |
| public static final int FULL_SCREEN_KIND = 2; |
| public static final int MICRO_KIND = 3; |
| |
| /** |
| * The width of the thumbnal |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String WIDTH = "width"; |
| |
| /** |
| * The height of the thumbnail |
| * <P>Type: INTEGER (long)</P> |
| */ |
| public static final String HEIGHT = "height"; |
| } |
| } |
| |
| /** |
| * Uri for querying the state of the media scanner. |
| */ |
| public static Uri getMediaScannerUri() { |
| return Uri.parse(CONTENT_AUTHORITY_SLASH + "none/media_scanner"); |
| } |
| |
| /** |
| * Name of current volume being scanned by the media scanner. |
| */ |
| public static final String MEDIA_SCANNER_VOLUME = "volume"; |
| |
| /** |
| * Name of the file signaling the media scanner to ignore media in the containing directory |
| * and its subdirectories. Developers should use this to avoid application graphics showing |
| * up in the Gallery and likewise prevent application sounds and music from showing up in |
| * the Music app. |
| */ |
| public static final String MEDIA_IGNORE_FILENAME = ".nomedia"; |
| |
| /** |
| * Get the media provider's version. |
| * Applications that import data from the media provider into their own caches |
| * can use this to detect that the media provider changed, and reimport data |
| * as needed. No other assumptions should be made about the meaning of the version. |
| * @param context Context to use for performing the query. |
| * @return A version string, or null if the version could not be determined. |
| */ |
| public static String getVersion(Context context) { |
| Cursor c = context.getContentResolver().query( |
| Uri.parse(CONTENT_AUTHORITY_SLASH + "none/version"), |
| null, null, null, null); |
| if (c != null) { |
| try { |
| if (c.moveToFirst()) { |
| return c.getString(0); |
| } |
| } finally { |
| c.close(); |
| } |
| } |
| return null; |
| } |
| } |
