ICameraService.aidl revision d56db1d2bee182d1851097a9c712712fc094d117 
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.impl.CameraMetadataNative;
25import android.hardware.ICameraServiceListener;
26import android.hardware.CameraInfo;
27
28/**
29 * Binder interface for the native camera service running in mediaserver.
30 *
31 * @hide
32 */
33interface ICameraService
34{
35    /**
36     * All camera service and device Binder calls may return a
37     * ServiceSpecificException with the following error codes
38     */
39    const int ERROR_PERMISSION_DENIED = 1;
40    const int ERROR_ALREADY_EXISTS = 2;
41    const int ERROR_ILLEGAL_ARGUMENT = 3;
42    const int ERROR_DISCONNECTED = 4;
43    const int ERROR_TIMED_OUT = 5;
44    const int ERROR_DISABLED = 6;
45    const int ERROR_CAMERA_IN_USE = 7;
46    const int ERROR_MAX_CAMERAS_IN_USE = 8;
47    const int ERROR_DEPRECATED_HAL = 9;
48    const int ERROR_INVALID_OPERATION = 10;
49
50    /**
51     * Types for getNumberOfCameras
52     */
53    const int CAMERA_TYPE_BACKWARD_COMPATIBLE = 0;
54    const int CAMERA_TYPE_ALL = 1;
55
56    /**
57     * Return the number of camera devices available in the system
58     */
59    int getNumberOfCameras(int type);
60
61    /**
62     * Fetch basic camera information for a camera device
63     */
64    CameraInfo getCameraInfo(int cameraId);
65
66    /**
67     * Default UID/PID values for non-privileged callers of
68     * connect(), connectDevice(), and connectLegacy()
69     */
70    const int USE_CALLING_UID = -1;
71    const int USE_CALLING_PID = -1;
72
73    /**
74     * Open a camera device through the old camera API
75     */
76    ICamera connect(ICameraClient client,
77            int cameraId,
78            String opPackageName,
79            int clientUid, int clientPid);
80
81    /**
82     * Open a camera device through the new camera API
83     * Only supported for device HAL versions >= 3.2
84     */
85    ICameraDeviceUser connectDevice(ICameraDeviceCallbacks callbacks,
86            int cameraId,
87            String opPackageName,
88            int clientUid);
89
90    /**
91     * halVersion constant for connectLegacy
92     */
93    const int CAMERA_HAL_API_VERSION_UNSPECIFIED = -1;
94
95    /**
96     * Open a camera device in legacy mode, if supported by the camera module HAL.
97     */
98    ICamera connectLegacy(ICameraClient client,
99            int cameraId,
100            int halVersion,
101            String opPackageName,
102            int clientUid);
103
104    /**
105     * Add/remove listeners for changes to camera device and flashlight state
106     */
107    void addListener(ICameraServiceListener listener);
108    void removeListener(ICameraServiceListener listener);
109
110    /**
111     * Read the static camera metadata for a camera device.
112     * Only supported for device HAL versions >= 3.2
113     */
114    CameraMetadataNative getCameraCharacteristics(int cameraId);
115
116    /**
117     * Read in the vendor tag descriptors from the camera module HAL.
118     * Intended to be used by the native code of CameraMetadataNative to correctly
119     * interpret camera metadata with vendor tags.
120     */
121    VendorTagDescriptor getCameraVendorTagDescriptor();
122
123    /**
124     * Read the legacy camera1 parameters into a String
125     */
126    String getLegacyParameters(int cameraId);
127
128    /**
129     * apiVersion constants for supportsCameraApi
130     */
131    const int API_VERSION_1 = 1;
132    const int API_VERSION_2 = 2;
133
134    // Determines if a particular API version is supported directly
135    boolean supportsCameraApi(int cameraId, int apiVersion);
136
137    void setTorchMode(String CameraId, boolean enabled, IBinder clientBinder);
138
139    /**
140     * Notify the camera service of a system event.  Should only be called from system_server.
141     *
142     * Callers require the android.permission.CAMERA_SEND_SYSTEM_EVENTS permission.
143     */
144    const int EVENT_NONE = 0;
145    const int EVENT_USER_SWITCHED = 1;
146    oneway void notifySystemEvent(int eventId, in int[] args);
147}
148