ICameraService.aidl revision 71c73a2985a7ac65ee597be3441ab300fa56e22e 
1/*
2 * Copyright (C) 2013 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;
18
19import android.hardware.ICamera;
20import android.hardware.ICameraClient;
21import android.hardware.camera2.ICameraDeviceUser;
22import android.hardware.camera2.ICameraDeviceCallbacks;
23import android.hardware.camera2.params.VendorTagDescriptor;
24import android.hardware.camera2.params.VendorTagDescriptorCache;
25import android.hardware.camera2.impl.CameraMetadataNative;
26import android.hardware.ICameraServiceListener;
27import android.hardware.CameraInfo;
28import android.hardware.CameraStatus;
29
30/**
31 * Binder interface for the native camera service running in mediaserver.
32 *
33 * @hide
34 */
35interface ICameraService
36{
37    /**
38     * All camera service and device Binder calls may return a
39     * ServiceSpecificException with the following error codes
40     */
41    const int ERROR_PERMISSION_DENIED = 1;
42    const int ERROR_ALREADY_EXISTS = 2;
43    const int ERROR_ILLEGAL_ARGUMENT = 3;
44    const int ERROR_DISCONNECTED = 4;
45    const int ERROR_TIMED_OUT = 5;
46    const int ERROR_DISABLED = 6;
47    const int ERROR_CAMERA_IN_USE = 7;
48    const int ERROR_MAX_CAMERAS_IN_USE = 8;
49    const int ERROR_DEPRECATED_HAL = 9;
50    const int ERROR_INVALID_OPERATION = 10;
51
52    /**
53     * Types for getNumberOfCameras
54     */
55    const int CAMERA_TYPE_BACKWARD_COMPATIBLE = 0;
56    const int CAMERA_TYPE_ALL = 1;
57
58    /**
59     * Return the number of camera devices available in the system
60     */
61    int getNumberOfCameras(int type);
62
63    /**
64     * Fetch basic camera information for a camera device
65     */
66    CameraInfo getCameraInfo(int cameraId);
67
68    /**
69     * Default UID/PID values for non-privileged callers of
70     * connect(), connectDevice(), and connectLegacy()
71     */
72    const int USE_CALLING_UID = -1;
73    const int USE_CALLING_PID = -1;
74
75    /**
76     * Open a camera device through the old camera API
77     */
78    ICamera connect(ICameraClient client,
79            int cameraId,
80            String opPackageName,
81            int clientUid, int clientPid);
82
83    /**
84     * Open a camera device through the new camera API
85     * Only supported for device HAL versions >= 3.2
86     */
87    ICameraDeviceUser connectDevice(ICameraDeviceCallbacks callbacks,
88            String cameraId,
89            String opPackageName,
90            int clientUid);
91
92    /**
93     * halVersion constant for connectLegacy
94     */
95    const int CAMERA_HAL_API_VERSION_UNSPECIFIED = -1;
96
97    /**
98     * Open a camera device in legacy mode, if supported by the camera module HAL.
99     */
100    ICamera connectLegacy(ICameraClient client,
101            int cameraId,
102            int halVersion,
103            String opPackageName,
104            int clientUid);
105
106    /**
107     * Add listener for changes to camera device and flashlight state.
108     *
109     * Also returns the set of currently-known camera IDs and state of each device.
110     * Adding a listener will trigger the torch status listener to fire for all
111     * devices that have a flash unit
112     */
113    CameraStatus[] addListener(ICameraServiceListener listener);
114
115    /**
116     * Remove listener for changes to camera device and flashlight state.
117     */
118    void removeListener(ICameraServiceListener listener);
119
120    /**
121     * Read the static camera metadata for a camera device.
122     * Only supported for device HAL versions >= 3.2
123     */
124    CameraMetadataNative getCameraCharacteristics(String cameraId);
125
126    /**
127     * Read in the vendor tag descriptors from the camera module HAL.
128     * Intended to be used by the native code of CameraMetadataNative to correctly
129     * interpret camera metadata with vendor tags.
130     */
131    VendorTagDescriptor getCameraVendorTagDescriptor();
132
133    /**
134     * Retrieve the vendor tag descriptor cache which can have multiple vendor
135     * providers.
136     * Intended to be used by the native code of CameraMetadataNative to correctly
137     * interpret camera metadata with vendor tags.
138     */
139    VendorTagDescriptorCache getCameraVendorTagCache();
140
141    /**
142     * Read the legacy camera1 parameters into a String
143     */
144    String getLegacyParameters(int cameraId);
145
146    /**
147     * apiVersion constants for supportsCameraApi
148     */
149    const int API_VERSION_1 = 1;
150    const int API_VERSION_2 = 2;
151
152    // Determines if a particular API version is supported directly
153    boolean supportsCameraApi(String cameraId, int apiVersion);
154
155    void setTorchMode(String cameraId, boolean enabled, IBinder clientBinder);
156
157    /**
158     * Notify the camera service of a system event.  Should only be called from system_server.
159     *
160     * Callers require the android.permission.CAMERA_SEND_SYSTEM_EVENTS permission.
161     */
162    const int EVENT_NONE = 0;
163    const int EVENT_USER_SWITCHED = 1;
164    oneway void notifySystemEvent(int eventId, in int[] args);
165}
166