1/*
2 * Copyright (C) 2020 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.hardware.automotive.audiocontrol@2.0;
18
19/**
20 * Represents a generic close handle to remove a callback that doesn't need
21 * active interface.
22 *
23 * When close() is called OR when the interface is released, the underlying
24 * resources must be freed.
25 */
26interface ICloseHandle {
27    /**
28     * Closes the handle.
29     *
30     * The call must not fail and must be issued by the client at most once.
31     * Otherwise, the server must ignore subsequent calls.
32     */
33    close();
34};
35