Added factory to create ToneGenerators

/*

 * Copyright (C) 2016 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.incallui.ringtone;

import android.media.ToneGenerator;

/**

 * Factory used to create {@link ToneGenerator}s.

 */

public class ToneGeneratorFactory {

    /**

     * Creates a new {@link ToneGenerator} to use while in a call.

     *

     * @param stream the stream through which to play tones.

     * @param volume the volume at which to play tones.

     * @return a new ToneGenerator.

     */

    public ToneGenerator newInCallToneGenerator(int stream, int volume) {

        return new ToneGenerator(stream, volume);

    }

}