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.camera.provider@2.4;
18
19import android.hardware.camera.common@1.0::types;
20
21/**
22 * Callback functions for a camera provider HAL to use to inform the camera
23 * service of changes to the camera subsystem.
24 */
25interface ICameraProviderCallback {
26
27    /**
28     * cameraDeviceStatusChange:
29     *
30     * Callback to the camera service to indicate that the state of a specific
31     * camera device has changed.
32     *
33     * On camera service startup, when ICameraProvider::setCallback is invoked,
34     * the camera service must assume that all internal camera devices are in
35     * the CAMERA_DEVICE_STATUS_PRESENT state.
36     *
37     * The provider must call this method to inform the camera service of any
38     * initially NOT_PRESENT devices, and of any external camera devices that
39     * are already present, as soon as the callbacks are available through
40     * setCallback.
41     *
42     * @param cameraDeviceName The name of the camera device that has a
43     *     new status.
44     * @param newStatus The new status that device is in.
45     *
46     */
47    cameraDeviceStatusChange(string cameraDeviceName,
48            CameraDeviceStatus newStatus);
49
50    /**
51     * torchModeStatusChange:
52     *
53     * Callback to the camera service to indicate that the state of the torch
54     * mode of the flash unit associated with a specific camera device has
55     * changed. At provider registration time, the camera service must assume
56     * the torch modes are in the TORCH_MODE_STATUS_AVAILABLE_OFF state if
57     * android.flash.info.available is reported as true via the
58     * ICameraDevice::getCameraCharacteristics call.
59     *
60     * @param cameraDeviceName The name of the camera device that has a
61     *     new status.
62     * @param newStatus The new status that device is in.
63     *
64     */
65    torchModeStatusChange(string cameraDeviceName,
66            TorchModeStatus newStatus);
67
68};
69