Android example source code file (MediaScanner.java)
The MediaScanner.java Android example source code/*
* 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.media;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.IContentProvider;
import android.database.Cursor;
import android.database.SQLException;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemProperties;
import android.provider.MediaStore;
import android.provider.Settings;
import android.provider.MediaStore.Audio;
import android.provider.MediaStore.Images;
import android.provider.MediaStore.Video;
import android.provider.MediaStore.Audio.Genres;
import android.provider.MediaStore.Audio.Playlists;
import android.sax.Element;
import android.sax.ElementListener;
import android.sax.RootElement;
import android.text.TextUtils;
import android.util.Config;
import android.util.Log;
import android.util.Xml;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
/**
* Internal service helper that no-one should use directly.
*
* The way the scan currently works is:
* - The Java MediaScannerService creates a MediaScanner (this class), and calls
* MediaScanner.scanDirectories on it.
* - scanDirectories() calls the native processDirectory() for each of the specified directories.
* - the processDirectory() JNI method wraps the provided mediascanner client in a native
* 'MyMediaScannerClient' class, then calls processDirectory() on the native MediaScanner
* object (which got created when the Java MediaScanner was created).
* - native MediaScanner.processDirectory() (currently part of opencore) calls
* doProcessDirectory(), which recurses over the folder, and calls
* native MyMediaScannerClient.scanFile() for every file whose extension matches.
* - native MyMediaScannerClient.scanFile() calls back on Java MediaScannerClient.scanFile,
* which calls doScanFile, which after some setup calls back down to native code, calling
* MediaScanner.processFile().
* - MediaScanner.processFile() calls one of several methods, depending on the type of the
* file: parseMP3, parseMP4, parseMidi, parseOgg or parseWMA.
* - each of these methods gets metadata key/value pairs from the file, and repeatedly
* calls native MyMediaScannerClient.handleStringTag, which calls back up to its Java
* counterparts in this file.
* - Java handleStringTag() gathers the key/value pairs that it's interested in.
* - once processFile returns and we're back in Java code in doScanFile(), it calls
* Java MyMediaScannerClient.endFile(), which takes all the data that's been
* gathered and inserts an entry in to the database.
*
* In summary:
* Java MediaScannerService calls
* Java MediaScanner scanDirectories, which calls
* Java MediaScanner processDirectory (native method), which calls
* native MediaScanner processDirectory, which calls
* native MyMediaScannerClient scanFile, which calls
* Java MyMediaScannerClient scanFile, which calls
* Java MediaScannerClient doScanFile, which calls
* Java MediaScanner processFile (native method), which calls
* native MediaScanner processFile, which calls
* native parseMP3, parseMP4, parseMidi, parseOgg or parseWMA, which calls
* native MyMediaScanner handleStringTag, which calls
* Java MyMediaScanner handleStringTag.
* Once MediaScanner processFile returns, an entry is inserted in to the database.
*
* {@hide}
*/
public class MediaScanner
{
static {
System.loadLibrary("media_jni");
native_init();
}
private final static String TAG = "MediaScanner";
private static final String[] AUDIO_PROJECTION = new String[] {
Audio.Media._ID, // 0
Audio.Media.DATA, // 1
Audio.Media.DATE_MODIFIED, // 2
};
private static final int ID_AUDIO_COLUMN_INDEX = 0;
private static final int PATH_AUDIO_COLUMN_INDEX = 1;
private static final int DATE_MODIFIED_AUDIO_COLUMN_INDEX = 2;
private static final String[] VIDEO_PROJECTION = new String[] {
Video.Media._ID, // 0
Video.Media.DATA, // 1
Video.Media.DATE_MODIFIED, // 2
};
private static final int ID_VIDEO_COLUMN_INDEX = 0;
private static final int PATH_VIDEO_COLUMN_INDEX = 1;
private static final int DATE_MODIFIED_VIDEO_COLUMN_INDEX = 2;
private static final String[] IMAGES_PROJECTION = new String[] {
Images.Media._ID, // 0
Images.Media.DATA, // 1
Images.Media.DATE_MODIFIED, // 2
};
private static final int ID_IMAGES_COLUMN_INDEX = 0;
private static final int PATH_IMAGES_COLUMN_INDEX = 1;
private static final int DATE_MODIFIED_IMAGES_COLUMN_INDEX = 2;
private static final String[] PLAYLISTS_PROJECTION = new String[] {
Audio.Playlists._ID, // 0
Audio.Playlists.DATA, // 1
Audio.Playlists.DATE_MODIFIED, // 2
};
private static final String[] PLAYLIST_MEMBERS_PROJECTION = new String[] {
Audio.Playlists.Members.PLAYLIST_ID, // 0
};
private static final int ID_PLAYLISTS_COLUMN_INDEX = 0;
private static final int PATH_PLAYLISTS_COLUMN_INDEX = 1;
private static final int DATE_MODIFIED_PLAYLISTS_COLUMN_INDEX = 2;
private static final String[] GENRE_LOOKUP_PROJECTION = new String[] {
Audio.Genres._ID, // 0
Audio.Genres.NAME, // 1
};
private static final String RINGTONES_DIR = "/ringtones/";
private static final String NOTIFICATIONS_DIR = "/notifications/";
private static final String ALARMS_DIR = "/alarms/";
private static final String MUSIC_DIR = "/music/";
private static final String PODCAST_DIR = "/podcasts/";
private static final String[] ID3_GENRES = {
// ID3v1 Genres
"Blues",
"Classic Rock",
"Country",
"Dance",
"Disco",
"Funk",
"Grunge",
"Hip-Hop",
"Jazz",
"Metal",
"New Age",
"Oldies",
"Other",
"Pop",
"R&B",
"Rap",
"Reggae",
"Rock",
"Techno",
"Industrial",
"Alternative",
"Ska",
"Death Metal",
"Pranks",
"Soundtrack",
"Euro-Techno",
"Ambient",
"Trip-Hop",
"Vocal",
"Jazz+Funk",
"Fusion",
"Trance",
"Classical",
"Instrumental",
"Acid",
"House",
"Game",
"Sound Clip",
"Gospel",
"Noise",
"AlternRock",
"Bass",
"Soul",
"Punk",
"Space",
"Meditative",
"Instrumental Pop",
"Instrumental Rock",
"Ethnic",
"Gothic",
"Darkwave",
"Techno-Industrial",
"Electronic",
"Pop-Folk",
"Eurodance",
"Dream",
"Southern Rock",
"Comedy",
"Cult",
"Gangsta",
"Top 40",
"Christian Rap",
"Pop/Funk",
"Jungle",
"Native American",
"Cabaret",
"New Wave",
"Psychadelic",
"Rave",
"Showtunes",
"Trailer",
"Lo-Fi",
"Tribal",
"Acid Punk",
"Acid Jazz",
"Polka",
"Retro",
"Musical",
"Rock & Roll",
"Hard Rock",
// The following genres are Winamp extensions
"Folk",
"Folk-Rock",
"National Folk",
"Swing",
"Fast Fusion",
"Bebob",
"Latin",
"Revival",
"Celtic",
"Bluegrass",
"Avantgarde",
"Gothic Rock",
"Progressive Rock",
"Psychedelic Rock",
"Symphonic Rock",
"Slow Rock",
"Big Band",
"Chorus",
"Easy Listening",
"Acoustic",
"Humour",
"Speech",
"Chanson",
"Opera",
"Chamber Music",
"Sonata",
"Symphony",
"Booty Bass",
"Primus",
"Porn Groove",
"Satire",
"Slow Jam",
"Club",
"Tango",
"Samba",
"Folklore",
"Ballad",
"Power Ballad",
"Rhythmic Soul",
"Freestyle",
"Duet",
"Punk Rock",
"Drum Solo",
"A capella",
"Euro-House",
"Dance Hall"
};
private int mNativeContext;
private Context mContext;
private IContentProvider mMediaProvider;
private Uri mAudioUri;
private Uri mVideoUri;
private Uri mImagesUri;
private Uri mThumbsUri;
private Uri mGenresUri;
private Uri mPlaylistsUri;
private boolean mProcessPlaylists, mProcessGenres;
// used when scanning the image database so we know whether we have to prune
// old thumbnail files
private int mOriginalCount;
/** Whether the scanner has set a default sound for the ringer ringtone. */
private boolean mDefaultRingtoneSet;
/** Whether the scanner has set a default sound for the notification ringtone. */
private boolean mDefaultNotificationSet;
/** Whether the scanner has set a default sound for the alarm ringtone. */
private boolean mDefaultAlarmSet;
/** The filename for the default sound for the ringer ringtone. */
private String mDefaultRingtoneFilename;
/** The filename for the default sound for the notification ringtone. */
private String mDefaultNotificationFilename;
/** The filename for the default sound for the alarm ringtone. */
private String mDefaultAlarmAlertFilename;
/**
* The prefix for system properties that define the default sound for
* ringtones. Concatenate the name of the setting from Settings
* to get the full system property.
*/
private static final String DEFAULT_RINGTONE_PROPERTY_PREFIX = "ro.config.";
// set to true if file path comparisons should be case insensitive.
// this should be set when scanning files on a case insensitive file system.
private boolean mCaseInsensitivePaths;
private BitmapFactory.Options mBitmapOptions = new BitmapFactory.Options();
private static class FileCacheEntry {
Uri mTableUri;
long mRowId;
String mPath;
long mLastModified;
boolean mSeenInFileSystem;
boolean mLastModifiedChanged;
FileCacheEntry(Uri tableUri, long rowId, String path, long lastModified) {
mTableUri = tableUri;
mRowId = rowId;
mPath = path;
mLastModified = lastModified;
mSeenInFileSystem = false;
mLastModifiedChanged = false;
}
@Override
public String toString() {
return mPath;
}
}
// hashes file path to FileCacheEntry.
// path should be lower case if mCaseInsensitivePaths is true
private HashMap<String, FileCacheEntry> mFileCache;
private ArrayList<FileCacheEntry> mPlayLists;
private HashMap<String, Uri> mGenreCache;
public MediaScanner(Context c) {
native_setup();
mContext = c;
mBitmapOptions.inSampleSize = 1;
mBitmapOptions.inJustDecodeBounds = true;
setDefaultRingtoneFileNames();
}
private void setDefaultRingtoneFileNames() {
mDefaultRingtoneFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX
+ Settings.System.RINGTONE);
mDefaultNotificationFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX
+ Settings.System.NOTIFICATION_SOUND);
mDefaultAlarmAlertFilename = SystemProperties.get(DEFAULT_RINGTONE_PROPERTY_PREFIX
+ Settings.System.ALARM_ALERT);
}
private MyMediaScannerClient mClient = new MyMediaScannerClient();
private class MyMediaScannerClient implements MediaScannerClient {
private String mArtist;
private String mAlbumArtist; // use this if mArtist is missing
private String mAlbum;
private String mTitle;
private String mComposer;
private String mGenre;
private String mMimeType;
private int mFileType;
private int mTrack;
private int mYear;
private int mDuration;
private String mPath;
private long mLastModified;
private long mFileSize;
private String mWriter;
public FileCacheEntry beginFile(String path, String mimeType, long lastModified, long fileSize) {
// special case certain file names
// I use regionMatches() instead of substring() below
// to avoid memory allocation
int lastSlash = path.lastIndexOf('/');
if (lastSlash >= 0 && lastSlash + 2 < path.length()) {
// ignore those ._* files created by MacOS
if (path.regionMatches(lastSlash + 1, "._", 0, 2)) {
return null;
}
// ignore album art files created by Windows Media Player:
// Folder.jpg, AlbumArtSmall.jpg, AlbumArt_{...}_Large.jpg and AlbumArt_{...}_Small.jpg
if (path.regionMatches(true, path.length() - 4, ".jpg", 0, 4)) {
if (path.regionMatches(true, lastSlash + 1, "AlbumArt_{", 0, 10) ||
path.regionMatches(true, lastSlash + 1, "AlbumArt.", 0, 9)) {
return null;
}
int length = path.length() - lastSlash - 1;
if ((length == 17 && path.regionMatches(true, lastSlash + 1, "AlbumArtSmall", 0, 13)) ||
(length == 10 && path.regionMatches(true, lastSlash + 1, "Folder", 0, 6))) {
return null;
}
}
}
mMimeType = null;
// try mimeType first, if it is specified
if (mimeType != null) {
mFileType = MediaFile.getFileTypeForMimeType(mimeType);
if (mFileType != 0) {
mMimeType = mimeType;
}
}
mFileSize = fileSize;
// if mimeType was not specified, compute file type based on file extension.
if (mMimeType == null) {
MediaFile.MediaFileType mediaFileType = MediaFile.getFileType(path);
if (mediaFileType != null) {
mFileType = mediaFileType.fileType;
mMimeType = mediaFileType.mimeType;
}
}
String key = path;
if (mCaseInsensitivePaths) {
key = path.toLowerCase();
}
FileCacheEntry entry = mFileCache.get(key);
if (entry == null) {
entry = new FileCacheEntry(null, 0, path, 0);
mFileCache.put(key, entry);
}
entry.mSeenInFileSystem = true;
// add some slack to avoid a rounding error
long delta = lastModified - entry.mLastModified;
if (delta > 1 || delta < -1) {
entry.mLastModified = lastModified;
entry.mLastModifiedChanged = true;
}
if (mProcessPlaylists && MediaFile.isPlayListFileType(mFileType)) {
mPlayLists.add(entry);
// we don't process playlists in the main scan, so return null
return null;
}
// clear all the metadata
mArtist = null;
mAlbumArtist = null;
mAlbum = null;
mTitle = null;
mComposer = null;
mGenre = null;
mTrack = 0;
mYear = 0;
mDuration = 0;
mPath = path;
mLastModified = lastModified;
mWriter = null;
return entry;
}
public void scanFile(String path, long lastModified, long fileSize) {
// This is the callback funtion from native codes.
// Log.v(TAG, "scanFile: "+path);
doScanFile(path, null, lastModified, fileSize, false);
}
public void scanFile(String path, String mimeType, long lastModified, long fileSize) {
doScanFile(path, mimeType, lastModified, fileSize, false);
}
public Uri doScanFile(String path, String mimeType, long lastModified, long fileSize, boolean scanAlways) {
Uri result = null;
// long t1 = System.currentTimeMillis();
try {
FileCacheEntry entry = beginFile(path, mimeType, lastModified, fileSize);
// rescan for metadata if file was modified since last scan
if (entry != null && (entry.mLastModifiedChanged || scanAlways)) {
String lowpath = path.toLowerCase();
boolean ringtones = (lowpath.indexOf(RINGTONES_DIR) > 0);
boolean notifications = (lowpath.indexOf(NOTIFICATIONS_DIR) > 0);
boolean alarms = (lowpath.indexOf(ALARMS_DIR) > 0);
boolean podcasts = (lowpath.indexOf(PODCAST_DIR) > 0);
boolean music = (lowpath.indexOf(MUSIC_DIR) > 0) ||
(!ringtones && !notifications && !alarms && !podcasts);
if (!MediaFile.isImageFileType(mFileType)) {
processFile(path, mimeType, this);
}
result = endFile(entry, ringtones, notifications, alarms, music, podcasts);
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException in MediaScanner.scanFile()", e);
}
// long t2 = System.currentTimeMillis();
// Log.v(TAG, "scanFile: " + path + " took " + (t2-t1));
return result;
}
private int parseSubstring(String s, int start, int defaultValue) {
int length = s.length();
if (start == length) return defaultValue;
char ch = s.charAt(start++);
// return defaultValue if we have no integer at all
if (ch < '0' || ch > '9') return defaultValue;
int result = ch - '0';
while (start < length) {
ch = s.charAt(start++);
if (ch < '0' || ch > '9') return result;
result = result * 10 + (ch - '0');
}
return result;
}
public void handleStringTag(String name, String value) {
if (name.equalsIgnoreCase("title") || name.startsWith("title;")) {
// Don't trim() here, to preserve the special \001 character
// used to force sorting. The media provider will trim() before
// inserting the title in to the database.
mTitle = value;
} else if (name.equalsIgnoreCase("artist") || name.startsWith("artist;")) {
mArtist = value.trim();
} else if (name.equalsIgnoreCase("albumartist") || name.startsWith("albumartist;")) {
mAlbumArtist = value.trim();
} else if (name.equalsIgnoreCase("album") || name.startsWith("album;")) {
mAlbum = value.trim();
} else if (name.equalsIgnoreCase("composer") || name.startsWith("composer;")) {
mComposer = value.trim();
} else if (name.equalsIgnoreCase("genre") || name.startsWith("genre;")) {
// handle numeric genres, which PV sometimes encodes like "(20)"
if (value.length() > 0) {
int genreCode = -1;
char ch = value.charAt(0);
if (ch == '(') {
genreCode = parseSubstring(value, 1, -1);
} else if (ch >= '0' && ch <= '9') {
genreCode = parseSubstring(value, 0, -1);
}
if (genreCode >= 0 && genreCode < ID3_GENRES.length) {
value = ID3_GENRES[genreCode];
} else if (genreCode == 255) {
// 255 is defined to be unknown
value = null;
}
}
mGenre = value;
} else if (name.equalsIgnoreCase("year") || name.startsWith("year;")) {
mYear = parseSubstring(value, 0, 0);
} else if (name.equalsIgnoreCase("tracknumber") || name.startsWith("tracknumber;")) {
// track number might be of the form "2/12"
// we just read the number before the slash
int num = parseSubstring(value, 0, 0);
mTrack = (mTrack / 1000) * 1000 + num;
} else if (name.equalsIgnoreCase("discnumber") ||
name.equals("set") || name.startsWith("set;")) {
// set number might be of the form "1/3"
// we just read the number before the slash
int num = parseSubstring(value, 0, 0);
mTrack = (num * 1000) + (mTrack % 1000);
} else if (name.equalsIgnoreCase("duration")) {
mDuration = parseSubstring(value, 0, 0);
} else if (name.equalsIgnoreCase("writer") || name.startsWith("writer;")) {
mWriter = value.trim();
}
}
public void setMimeType(String mimeType) {
if ("audio/mp4".equals(mMimeType) &&
mimeType.startsWith("video")) {
// for feature parity with Donut, we force m4a files to keep the
// audio/mp4 mimetype, even if they are really "enhanced podcasts"
// with a video track
return;
}
mMimeType = mimeType;
mFileType = MediaFile.getFileTypeForMimeType(mimeType);
}
/**
* Formats the data into a values array suitable for use with the Media
* Content Provider.
*
* @return a map of values
*/
private ContentValues toValues() {
ContentValues map = new ContentValues();
map.put(MediaStore.MediaColumns.DATA, mPath);
map.put(MediaStore.MediaColumns.TITLE, mTitle);
map.put(MediaStore.MediaColumns.DATE_MODIFIED, mLastModified);
map.put(MediaStore.MediaColumns.SIZE, mFileSize);
map.put(MediaStore.MediaColumns.MIME_TYPE, mMimeType);
if (MediaFile.isVideoFileType(mFileType)) {
map.put(Video.Media.ARTIST, (mArtist != null && mArtist.length() > 0 ? mArtist : MediaStore.UNKNOWN_STRING));
map.put(Video.Media.ALBUM, (mAlbum != null && mAlbum.length() > 0 ? mAlbum : MediaStore.UNKNOWN_STRING));
map.put(Video.Media.DURATION, mDuration);
// FIXME - add RESOLUTION
} else if (MediaFile.isImageFileType(mFileType)) {
// FIXME - add DESCRIPTION
} else if (MediaFile.isAudioFileType(mFileType)) {
map.put(Audio.Media.ARTIST, (mArtist != null && mArtist.length() > 0) ?
mArtist : MediaStore.UNKNOWN_STRING);
map.put(Audio.Media.ALBUM_ARTIST, (mAlbumArtist != null &&
mAlbumArtist.length() > 0) ? mAlbumArtist : null);
map.put(Audio.Media.ALBUM, (mAlbum != null && mAlbum.length() > 0) ?
mAlbum : MediaStore.UNKNOWN_STRING);
map.put(Audio.Media.COMPOSER, mComposer);
if (mYear != 0) {
map.put(Audio.Media.YEAR, mYear);
}
map.put(Audio.Media.TRACK, mTrack);
map.put(Audio.Media.DURATION, mDuration);
}
return map;
}
private Uri endFile(FileCacheEntry entry, boolean ringtones, boolean notifications,
boolean alarms, boolean music, boolean podcasts)
throws RemoteException {
// update database
Uri tableUri;
boolean isAudio = MediaFile.isAudioFileType(mFileType);
boolean isVideo = MediaFile.isVideoFileType(mFileType);
boolean isImage = MediaFile.isImageFileType(mFileType);
if (isVideo) {
tableUri = mVideoUri;
} else if (isImage) {
tableUri = mImagesUri;
} else if (isAudio) {
tableUri = mAudioUri;
} else {
// don't add file to database if not audio, video or image
return null;
}
entry.mTableUri = tableUri;
// use album artist if artist is missing
if (mArtist == null || mArtist.length() == 0) {
mArtist = mAlbumArtist;
}
ContentValues values = toValues();
String title = values.getAsString(MediaStore.MediaColumns.TITLE);
if (title == null || TextUtils.isEmpty(title.trim())) {
title = values.getAsString(MediaStore.MediaColumns.DATA);
// extract file name after last slash
int lastSlash = title.lastIndexOf('/');
if (lastSlash >= 0) {
lastSlash++;
if (lastSlash < title.length()) {
title = title.substring(lastSlash);
}
}
// truncate the file extension (if any)
int lastDot = title.lastIndexOf('.');
if (lastDot > 0) {
title = title.substring(0, lastDot);
}
values.put(MediaStore.MediaColumns.TITLE, title);
}
String album = values.getAsString(Audio.Media.ALBUM);
if (MediaStore.UNKNOWN_STRING.equals(album)) {
album = values.getAsString(MediaStore.MediaColumns.DATA);
// extract last path segment before file name
int lastSlash = album.lastIndexOf('/');
if (lastSlash >= 0) {
int previousSlash = 0;
while (true) {
int idx = album.indexOf('/', previousSlash + 1);
if (idx < 0 || idx >= lastSlash) {
break;
}
previousSlash = idx;
}
if (previousSlash != 0) {
album = album.substring(previousSlash + 1, lastSlash);
values.put(Audio.Media.ALBUM, album);
}
}
}
long rowId = entry.mRowId;
if (isAudio && rowId == 0) {
// Only set these for new entries. For existing entries, they
// may have been modified later, and we want to keep the current
// values so that custom ringtones still show up in the ringtone
// picker.
values.put(Audio.Media.IS_RINGTONE, ringtones);
values.put(Audio.Media.IS_NOTIFICATION, notifications);
values.put(Audio.Media.IS_ALARM, alarms);
values.put(Audio.Media.IS_MUSIC, music);
values.put(Audio.Media.IS_PODCAST, podcasts);
} else if (mFileType == MediaFile.FILE_TYPE_JPEG) {
ExifInterface exif = null;
try {
exif = new ExifInterface(entry.mPath);
} catch (IOException ex) {
// exif is null
}
if (exif != null) {
float[] latlng = new float[2];
if (exif.getLatLong(latlng)) {
values.put(Images.Media.LATITUDE, latlng[0]);
values.put(Images.Media.LONGITUDE, latlng[1]);
}
long time = exif.getGpsDateTime();
if (time != -1) {
values.put(Images.Media.DATE_TAKEN, time);
}
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION, -1);
if (orientation != -1) {
// We only recognize a subset of orientation tag values.
int degree;
switch(orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
degree = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
degree = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
degree = 270;
break;
default:
degree = 0;
break;
}
values.put(Images.Media.ORIENTATION, degree);
}
}
}
Uri result = null;
if (rowId == 0) {
// new file, insert it
result = mMediaProvider.insert(tableUri, values);
if (result != null) {
rowId = ContentUris.parseId(result);
entry.mRowId = rowId;
}
} else {
// updated file
result = ContentUris.withAppendedId(tableUri, rowId);
mMediaProvider.update(result, values, null, null);
}
if (mProcessGenres && mGenre != null) {
String genre = mGenre;
Uri uri = mGenreCache.get(genre);
if (uri == null) {
Cursor cursor = null;
try {
// see if the genre already exists
cursor = mMediaProvider.query(
mGenresUri,
GENRE_LOOKUP_PROJECTION, MediaStore.Audio.Genres.NAME + "=?",
new String[] { genre }, null);
if (cursor == null || cursor.getCount() == 0) {
// genre does not exist, so create the genre in the genre table
values.clear();
values.put(MediaStore.Audio.Genres.NAME, genre);
uri = mMediaProvider.insert(mGenresUri, values);
} else {
// genre already exists, so compute its Uri
cursor.moveToNext();
uri = ContentUris.withAppendedId(mGenresUri, cursor.getLong(0));
}
if (uri != null) {
uri = Uri.withAppendedPath(uri, Genres.Members.CONTENT_DIRECTORY);
mGenreCache.put(genre, uri);
}
} finally {
// release the cursor if it exists
if (cursor != null) {
cursor.close();
}
}
}
if (uri != null) {
// add entry to audio_genre_map
values.clear();
values.put(MediaStore.Audio.Genres.Members.AUDIO_ID, Long.valueOf(rowId));
mMediaProvider.insert(uri, values);
}
}
if (notifications && !mDefaultNotificationSet) {
if (TextUtils.isEmpty(mDefaultNotificationFilename) ||
doesPathHaveFilename(entry.mPath, mDefaultNotificationFilename)) {
setSettingIfNotSet(Settings.System.NOTIFICATION_SOUND, tableUri, rowId);
mDefaultNotificationSet = true;
}
} else if (ringtones && !mDefaultRingtoneSet) {
if (TextUtils.isEmpty(mDefaultRingtoneFilename) ||
doesPathHaveFilename(entry.mPath, mDefaultRingtoneFilename)) {
setSettingIfNotSet(Settings.System.RINGTONE, tableUri, rowId);
mDefaultRingtoneSet = true;
}
} else if (alarms && !mDefaultAlarmSet) {
if (TextUtils.isEmpty(mDefaultAlarmAlertFilename) ||
doesPathHaveFilename(entry.mPath, mDefaultAlarmAlertFilename)) {
setSettingIfNotSet(Settings.System.ALARM_ALERT, tableUri, rowId);
mDefaultAlarmSet = true;
}
}
return result;
}
private boolean doesPathHaveFilename(String path, String filename) {
int pathFilenameStart = path.lastIndexOf(File.separatorChar) + 1;
int filenameLength = filename.length();
return path.regionMatches(pathFilenameStart, filename, 0, filenameLength) &&
pathFilenameStart + filenameLength == path.length();
}
private void setSettingIfNotSet(String settingName, Uri uri, long rowId) {
String existingSettingValue = Settings.System.getString(mContext.getContentResolver(),
settingName);
if (TextUtils.isEmpty(existingSettingValue)) {
// Set the setting to the given URI
Settings.System.putString(mContext.getContentResolver(), settingName,
ContentUris.withAppendedId(uri, rowId).toString());
}
}
public void addNoMediaFolder(String path) {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.ImageColumns.DATA, "");
String [] pathSpec = new String[] {path + '%'};
try {
// These tables have DELETE_FILE triggers that delete the file from the
// sd card when deleting the database entry. We don't want to do this in
// this case, since it would cause those files to be removed if a .nomedia
// file was added after the fact, when in that case we only want the database
// entries to be removed.
mMediaProvider.update(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values,
MediaStore.Images.ImageColumns.DATA + " LIKE ?", pathSpec);
mMediaProvider.update(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values,
MediaStore.Images.ImageColumns.DATA + " LIKE ?", pathSpec);
} catch (RemoteException e) {
throw new RuntimeException();
}
}
}; // end of anonymous MediaScannerClient instance
private void prescan(String filePath) throws RemoteException {
Cursor c = null;
String where = null;
String[] selectionArgs = null;
if (mFileCache == null) {
mFileCache = new HashMap<String, FileCacheEntry>();
} else {
mFileCache.clear();
}
if (mPlayLists == null) {
mPlayLists = new ArrayList<FileCacheEntry>();
} else {
mPlayLists.clear();
}
// Build the list of files from the content provider
try {
// Read existing files from the audio table
if (filePath != null) {
where = MediaStore.Audio.Media.DATA + "=?";
selectionArgs = new String[] { filePath };
}
c = mMediaProvider.query(mAudioUri, AUDIO_PROJECTION, where, selectionArgs, null);
if (c != null) {
try {
while (c.moveToNext()) {
long rowId = c.getLong(ID_AUDIO_COLUMN_INDEX);
String path = c.getString(PATH_AUDIO_COLUMN_INDEX);
long lastModified = c.getLong(DATE_MODIFIED_AUDIO_COLUMN_INDEX);
// Only consider entries with absolute path names.
// This allows storing URIs in the database without the
// media scanner removing them.
if (path.startsWith("/")) {
String key = path;
if (mCaseInsensitivePaths) {
key = path.toLowerCase();
}
mFileCache.put(key, new FileCacheEntry(mAudioUri, rowId, path,
lastModified));
}
}
} finally {
c.close();
c = null;
}
}
// Read existing files from the video table
if (filePath != null) {
where = MediaStore.Video.Media.DATA + "=?";
} else {
where = null;
}
c = mMediaProvider.query(mVideoUri, VIDEO_PROJECTION, where, selectionArgs, null);
if (c != null) {
try {
while (c.moveToNext()) {
long rowId = c.getLong(ID_VIDEO_COLUMN_INDEX);
String path = c.getString(PATH_VIDEO_COLUMN_INDEX);
long lastModified = c.getLong(DATE_MODIFIED_VIDEO_COLUMN_INDEX);
// Only consider entries with absolute path names.
// This allows storing URIs in the database without the
// media scanner removing them.
if (path.startsWith("/")) {
String key = path;
if (mCaseInsensitivePaths) {
key = path.toLowerCase();
}
mFileCache.put(key, new FileCacheEntry(mVideoUri, rowId, path,
lastModified));
}
}
} finally {
c.close();
c = null;
}
}
// Read existing files from the images table
if (filePath != null) {
where = MediaStore.Images.Media.DATA + "=?";
} else {
where = null;
}
mOriginalCount = 0;
c = mMediaProvider.query(mImagesUri, IMAGES_PROJECTION, where, selectionArgs, null);
if (c != null) {
try {
mOriginalCount = c.getCount();
while (c.moveToNext()) {
long rowId = c.getLong(ID_IMAGES_COLUMN_INDEX);
String path = c.getString(PATH_IMAGES_COLUMN_INDEX);
long lastModified = c.getLong(DATE_MODIFIED_IMAGES_COLUMN_INDEX);
// Only consider entries with absolute path names.
// This allows storing URIs in the database without the
// media scanner removing them.
if (path.startsWith("/")) {
String key = path;
if (mCaseInsensitivePaths) {
key = path.toLowerCase();
}
mFileCache.put(key, new FileCacheEntry(mImagesUri, rowId, path,
lastModified));
}
}
} finally {
c.close();
c = null;
}
}
if (mProcessPlaylists) {
// Read existing files from the playlists table
if (filePath != null) {
where = MediaStore.Audio.Playlists.DATA + "=?";
} else {
where = null;
}
c = mMediaProvider.query(mPlaylistsUri, PLAYLISTS_PROJECTION, where, selectionArgs, null);
if (c != null) {
try {
while (c.moveToNext()) {
String path = c.getString(PATH_PLAYLISTS_COLUMN_INDEX);
if (path != null && path.length() > 0) {
long rowId = c.getLong(ID_PLAYLISTS_COLUMN_INDEX);
long lastModified = c.getLong(DATE_MODIFIED_PLAYLISTS_COLUMN_INDEX);
String key = path;
if (mCaseInsensitivePaths) {
key = path.toLowerCase();
}
mFileCache.put(key, new FileCacheEntry(mPlaylistsUri, rowId, path,
lastModified));
}
}
} finally {
c.close();
c = null;
}
}
}
}
finally {
if (c != null) {
c.close();
}
}
}
private boolean inScanDirectory(String path, String[] directories) {
for (int i = 0; i < directories.length; i++) {
if (path.startsWith(directories[i])) {
return true;
}
}
return false;
}
private void pruneDeadThumbnailFiles() {
HashSet<String> existingFiles = new HashSet
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