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/**
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.soundtrigger;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.hardware.soundtrigger.SoundTrigger.GenericSoundModel;
import android.util.Slog;
import java.io.PrintWriter;
import java.util.UUID;
/**
* Helper to manage the database of the sound models that have been registered on the device.
*
* @hide
*/
public class SoundTriggerDbHelper extends SQLiteOpenHelper {
static final String TAG = "SoundTriggerDbHelper";
static final boolean DBG = false;
private static final String NAME = "st_sound_model.db";
private static final int VERSION = 2;
// Sound trigger-based sound models.
public static interface GenericSoundModelContract {
public static final String TABLE = "st_sound_model";
public static final String KEY_MODEL_UUID = "model_uuid";
public static final String KEY_VENDOR_UUID = "vendor_uuid";
public static final String KEY_DATA = "data";
public static final String KEY_MODEL_VERSION = "model_version";
}
// Table Create Statement for the sound trigger table
private static final String CREATE_TABLE_ST_SOUND_MODEL = "CREATE TABLE "
+ GenericSoundModelContract.TABLE + "("
+ GenericSoundModelContract.KEY_MODEL_UUID + " TEXT PRIMARY KEY,"
+ GenericSoundModelContract.KEY_VENDOR_UUID + " TEXT,"
+ GenericSoundModelContract.KEY_DATA + " BLOB,"
+ GenericSoundModelContract.KEY_MODEL_VERSION + " INTEGER" + " )";
public SoundTriggerDbHelper(Context context) {
super(context, NAME, null, VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// creating required tables
db.execSQL(CREATE_TABLE_ST_SOUND_MODEL);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion == 1) {
// In version 2, a model version number was added.
Slog.d(TAG, "Adding model version column");
db.execSQL("ALTER TABLE " + GenericSoundModelContract.TABLE + " ADD COLUMN "
+ GenericSoundModelContract.KEY_MODEL_VERSION + " INTEGER DEFAULT -1");
oldVersion++;
}
}
/**
* Updates the given sound trigger model, adds it, if it doesn't already exist.
*
*/
public boolean updateGenericSoundModel(GenericSoundModel soundModel) {
synchronized(this) {
SQLiteDatabase db = getWritableDatabase();
ContentValues values = new ContentValues();
values.put(GenericSoundModelContract.KEY_MODEL_UUID, soundModel.getUuid().toString());
values.put(GenericSoundModelContract.KEY_VENDOR_UUID,
soundModel.getVendorUuid().toString());
values.put(GenericSoundModelContract.KEY_DATA, soundModel.getData());
values.put(GenericSoundModelContract.KEY_MODEL_VERSION, soundModel.getVersion());
try {
return db.insertWithOnConflict(GenericSoundModelContract.TABLE, null, values,
SQLiteDatabase.CONFLICT_REPLACE) != -1;
} finally {
db.close();
}
}
}
public GenericSoundModel getGenericSoundModel(UUID model_uuid) {
synchronized(this) {
// Find the corresponding sound model ID for the keyphrase.
String selectQuery = "SELECT * FROM " + GenericSoundModelContract.TABLE
+ " WHERE " + GenericSoundModelContract.KEY_MODEL_UUID + "= '" +
model_uuid + "'";
SQLiteDatabase db = getReadableDatabase();
Cursor c = db.rawQuery(selectQuery, null);
try {
if (c.moveToFirst()) {
do {
byte[] data = c.getBlob(c.getColumnIndex(
GenericSoundModelContract.KEY_DATA));
String vendor_uuid = c.getString(
c.getColumnIndex(GenericSoundModelContract.KEY_VENDOR_UUID));
int version = c.getInt(
c.getColumnIndex(GenericSoundModelContract.KEY_MODEL_VERSION));
return new GenericSoundModel(model_uuid, UUID.fromString(vendor_uuid),
data, version);
} while (c.moveToNext());
}
} finally {
c.close();
db.close();
}
}
return null;
}
public boolean deleteGenericSoundModel(UUID model_uuid) {
synchronized(this) {
GenericSoundModel soundModel = getGenericSoundModel(model_uuid);
if (soundModel == null) {
return false;
}
// Delete all sound models for the given keyphrase and specified user.
SQLiteDatabase db = getWritableDatabase();
String soundModelClause = GenericSoundModelContract.KEY_MODEL_UUID
+ "='" + soundModel.getUuid().toString() + "'";
try {
return db.delete(GenericSoundModelContract.TABLE, soundModelClause, null) != 0;
} finally {
db.close();
}
}
}
public void dump(PrintWriter pw) {
synchronized(this) {
String selectQuery = "SELECT * FROM " + GenericSoundModelContract.TABLE;
SQLiteDatabase db = getReadableDatabase();
Cursor c = db.rawQuery(selectQuery, null);
try {
pw.println(" Enrolled GenericSoundModels:");
if (c.moveToFirst()) {
String[] columnNames = c.getColumnNames();
do {
for (String name : columnNames) {
int colNameIndex = c.getColumnIndex(name);
int type = c.getType(colNameIndex);
switch (type) {
case Cursor.FIELD_TYPE_STRING:
pw.printf(" %s: %s\n", name,
c.getString(colNameIndex));
break;
case Cursor.FIELD_TYPE_BLOB:
pw.printf(" %s: data blob\n", name);
break;
case Cursor.FIELD_TYPE_INTEGER:
pw.printf(" %s: %d\n", name,
c.getInt(colNameIndex));
break;
case Cursor.FIELD_TYPE_FLOAT:
pw.printf(" %s: %f\n", name,
c.getFloat(colNameIndex));
break;
case Cursor.FIELD_TYPE_NULL:
pw.printf(" %s: null\n", name);
break;
}
}
pw.println();
} while (c.moveToNext());
}
} finally {
c.close();
db.close();
}
}
}
}
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