/*
* ServeStream: A HTTP stream browser/player for Android
* Copyright 2013 William Seemann
*
* 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 net.sourceforge.servestream.provider;
import net.sourceforge.servestream.provider.Media.MediaColumns;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQueryBuilder;
import android.database.sqlite.SQLiteStatement;
import android.net.Uri;
import android.text.TextUtils;
import android.util.Log;
import java.util.HashMap;
/**
* Provides access to a database of media files. Each media has a title, the note
* itself, a creation date and a modified data.
*/
public class MediaProvider extends ContentProvider {
private static final String TAG = MediaProvider.class.getName();
private static final String DATABASE_NAME = "media.db";
private static final int DATABASE_VERSION = 2;
private static final String MEDIA_TABLE_NAME = "media_files";
private static HashMap<String, String> sMediaProjectionMap;
private static final int MEDIA = 1;
private static final int MEDIA_ID = 2;
private static final UriMatcher sUriMatcher;
/**
* This class helps open, create, and upgrade the database file.
*/
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + MEDIA_TABLE_NAME + " ("
+ MediaColumns._ID + " INTEGER PRIMARY KEY,"
+ MediaColumns.URI + " TEXT,"
+ MediaColumns.TITLE + " TEXT,"
+ MediaColumns.ALBUM + " TEXT,"
+ MediaColumns.ARTIST + " TEXT,"
+ MediaColumns.DURATION + " INTEGER,"
+ MediaColumns.TRACK + " TEXT,"
+ MediaColumns.YEAR + " INTEGER,"
+ MediaColumns.ARTWORK + " BLOB"
+ ");");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS " + MEDIA_TABLE_NAME);
onCreate(db);
}
}
private DatabaseHelper mOpenHelper;
@Override
public boolean onCreate() {
mOpenHelper = new DatabaseHelper(getContext());
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
qb.setTables(MEDIA_TABLE_NAME);
switch (sUriMatcher.match(uri)) {
case MEDIA:
qb.setProjectionMap(sMediaProjectionMap);
break;
case MEDIA_ID:
qb.setProjectionMap(sMediaProjectionMap);
qb.appendWhere(MediaColumns._ID + "=" + uri.getPathSegments().get(1));
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
// If no sort order is specified use the default
String orderBy;
if (TextUtils.isEmpty(sortOrder)) {
orderBy = MediaColumns.DEFAULT_SORT_ORDER;
} else {
orderBy = sortOrder;
}
// Get the database and run the query
SQLiteDatabase db = mOpenHelper.getReadableDatabase();
Cursor c = qb.query(db, projection, selection, selectionArgs, null, null, orderBy);
// Tell the cursor what uri to watch, so it knows when its source data changes
c.setNotificationUri(getContext().getContentResolver(), uri);
return c;
}
@Override
public String getType(Uri uri) {
switch (sUriMatcher.match(uri)) {
case MEDIA:
return MediaColumns.CONTENT_TYPE;
case MEDIA_ID:
return MediaColumns.CONTENT_ITEM_TYPE;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
}
@Override
public Uri insert(Uri uri, ContentValues initialValues) {
// Validate the requested uri
if (sUriMatcher.match(uri) != MEDIA) {
throw new IllegalArgumentException("Unknown URI " + uri);
}
ContentValues values;
if (initialValues != null) {
values = new ContentValues(initialValues);
} else {
values = new ContentValues();
}
// Make sure that the fields are all set
if (values.containsKey(MediaColumns.URI) == false) {
values.put(MediaColumns.URI, Media.UNKNOWN_STRING);
}
if (values.containsKey(MediaColumns.TITLE) == false) {
values.put(MediaColumns.TITLE, Media.UNKNOWN_STRING);
}
if (values.containsKey(MediaColumns.ALBUM) == false) {
values.put(MediaColumns.ALBUM, Media.UNKNOWN_STRING);
}
if (values.containsKey(MediaColumns.ARTIST) == false) {
values.put(MediaColumns.ARTIST, Media.UNKNOWN_STRING);
}
if (values.containsKey(MediaColumns.DURATION) == false) {
values.put(MediaColumns.DURATION, Media.UNKNOWN_INTEGER);
}
if (values.containsKey(MediaColumns.TRACK) == false) {
values.put(MediaColumns.TRACK, Media.UNKNOWN_STRING);
}
if (values.containsKey(MediaColumns.YEAR) == false) {
values.put(MediaColumns.YEAR, Media.UNKNOWN_INTEGER);
}
SQLiteDatabase db = mOpenHelper.getWritableDatabase();
long rowId = db.insert(MEDIA_TABLE_NAME, MediaColumns.URI, values);
if (rowId > 0) {
Uri audioUri = ContentUris.withAppendedId(MediaColumns.CONTENT_URI, rowId);
getContext().getContentResolver().notifyChange(audioUri, null);
return audioUri;
}
throw new SQLException("Failed to insert row into " + uri);
}
@Override
public int bulkInsert(Uri uri, ContentValues[] values) {
// Validate the requested uri
if (sUriMatcher.match(uri) != MEDIA) {
throw new IllegalArgumentException("Unknown URI " + uri);
}
int numInserted = 0;
SQLiteDatabase db = mOpenHelper.getWritableDatabase();
db.beginTransaction();
try {
//standard SQL insert statement, that can be reused
SQLiteStatement insert =
db.compileStatement("insert into " + MEDIA_TABLE_NAME
+ " (" + MediaColumns.URI + ","
+ MediaColumns.TITLE + ","
+ MediaColumns.ALBUM + ","
+ MediaColumns.ARTIST + ","
+ MediaColumns.DURATION + ","
+ MediaColumns.TRACK + ","
+ MediaColumns.YEAR + ")"
+ " values " + "(?,?,?,?,?,?,?)");
for (ContentValues value : values) {
// Make sure that the fields are all set
if (value.containsKey(MediaColumns.URI) == false) {
value.put(MediaColumns.URI, Media.UNKNOWN_STRING);
}
if (value.containsKey(MediaColumns.TITLE) == false) {
value.put(MediaColumns.TITLE, Media.UNKNOWN_STRING);
}
if (value.containsKey(MediaColumns.ALBUM) == false) {
value.put(MediaColumns.ALBUM, Media.UNKNOWN_STRING);
}
if (value.containsKey(MediaColumns.ARTIST) == false) {
value.put(MediaColumns.ARTIST, Media.UNKNOWN_STRING);
}
if (value.containsKey(MediaColumns.DURATION) == false) {
value.put(MediaColumns.DURATION, Media.UNKNOWN_INTEGER);
}
if (value.containsKey(MediaColumns.TRACK) == false) {
value.put(MediaColumns.TRACK, Media.UNKNOWN_STRING);
}
if (value.containsKey(MediaColumns.YEAR) == false) {
value.put(MediaColumns.YEAR, Media.UNKNOWN_INTEGER);
}
insert.bindString(1, value.getAsString(MediaColumns.URI));
insert.bindString(2, value.getAsString(MediaColumns.TITLE));
insert.bindString(3, value.getAsString(MediaColumns.ALBUM));
insert.bindString(4, value.getAsString(MediaColumns.ARTIST));
insert.bindLong(5, value.getAsInteger(MediaColumns.DURATION));
insert.bindString(6, value.getAsString(MediaColumns.TRACK));
insert.bindLong(7, value.getAsInteger(MediaColumns.YEAR));
insert.execute();
numInserted++;
}
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
return numInserted;
}
@Override
public int delete(Uri uri, String where, String[] whereArgs) {
SQLiteDatabase db = mOpenHelper.getWritableDatabase();
int count;
switch (sUriMatcher.match(uri)) {
case MEDIA:
count = db.delete(MEDIA_TABLE_NAME, where, whereArgs);
break;
case MEDIA_ID:
String noteId = uri.getPathSegments().get(1);
count = db.delete(MEDIA_TABLE_NAME, MediaColumns._ID + "=" + noteId
+ (!TextUtils.isEmpty(where) ? " AND (" + where + ')' : ""), whereArgs);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public int update(Uri uri, ContentValues values, String where, String[] whereArgs) {
SQLiteDatabase db = mOpenHelper.getWritableDatabase();
int count;
switch (sUriMatcher.match(uri)) {
case MEDIA:
count = db.update(MEDIA_TABLE_NAME, values, where, whereArgs);
break;
case MEDIA_ID:
String noteId = uri.getPathSegments().get(1);
count = db.update(MEDIA_TABLE_NAME, values, MediaColumns._ID + "=" + noteId
+ (!TextUtils.isEmpty(where) ? " AND (" + where + ')' : ""), whereArgs);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
static {
sUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
sUriMatcher.addURI(Media.AUTHORITY, "uris", MEDIA);
sUriMatcher.addURI(Media.AUTHORITY, "uris/#", MEDIA_ID);
sMediaProjectionMap = new HashMap<String, String>();
sMediaProjectionMap.put(MediaColumns._ID, MediaColumns._ID);
sMediaProjectionMap.put(MediaColumns.URI, MediaColumns.URI);
sMediaProjectionMap.put(MediaColumns.TITLE, MediaColumns.TITLE);
sMediaProjectionMap.put(MediaColumns.ALBUM, MediaColumns.ALBUM);
sMediaProjectionMap.put(MediaColumns.ARTIST, MediaColumns.ARTIST);
sMediaProjectionMap.put(MediaColumns.DURATION, MediaColumns.DURATION);
sMediaProjectionMap.put(MediaColumns.TRACK, MediaColumns.TRACK);
sMediaProjectionMap.put(MediaColumns.YEAR, MediaColumns.YEAR);
sMediaProjectionMap.put(MediaColumns.ARTWORK, MediaColumns.ARTWORK);
}
}