1/*
2 * Copyright (C) 2016 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.audio@2.0;
18
19import android.hardware.audio.common@2.0;
20import IDevice;
21
22interface IDevicesFactory {
23    typedef android.hardware.audio@2.0::Result Result;
24
25    enum Device : int32_t {
26        PRIMARY,
27        A2DP,
28        USB,
29        R_SUBMIX,
30        STUB
31    };
32
33    /**
34     * Opens an audio device. To close the device, it is necessary to release
35     * references to the returned device object.
36     *
37     * @param device device type.
38     * @return retval operation completion status. Returns INVALID_ARGUMENTS
39     *         if there is no corresponding hardware module found,
40     *         NOT_INITIALIZED if an error occured while opening the hardware
41     *         module.
42     * @return result the interface for the created device.
43     */
44    openDevice(Device device) generates (Result retval, IDevice result);
45};
46