1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.car.hardware.radio;
18
19import android.car.hardware.radio.CarRadioPreset;
20import android.car.hardware.radio.ICarRadioEventListener;
21
22/** @hide */
23interface ICarRadio {
24    /**
25     * Returns the number of hard presets on the radio unit that may be programmed.
26     */
27    int getPresetCount() = 0;
28
29    /**
30     * Registers the client for updates to radio changes.
31     */
32    void registerListener(in ICarRadioEventListener callback) = 1;
33
34    /**
35     * Unregisters the client for updates to radio changes.
36     */
37    void unregisterListener(in ICarRadioEventListener callback) = 2;
38
39    /**
40     * Gets the preset values stored for a particular preset number.
41     */
42    CarRadioPreset getPreset(int presetNumber) = 3;
43
44    /**
45     * Sets a specified preset (hard button) in the car. In order to check for success listen to
46     * events using {@link registerOrUpdateRadioListener}.
47     */
48    boolean setPreset(in CarRadioPreset preset) = 4;
49}
50