ICameraService.h revision 65d14b9825311f9d1847cf282bd0419e71bac666 
1/*
2 * Copyright (C) 2008 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
17#ifndef ANDROID_HARDWARE_ICAMERASERVICE_H
18#define ANDROID_HARDWARE_ICAMERASERVICE_H
19
20#include <utils/RefBase.h>
21#include <binder/IInterface.h>
22#include <binder/Parcel.h>
23
24namespace android {
25
26class ICamera;
27class ICameraClient;
28class IProCameraUser;
29class IProCameraCallbacks;
30class ICameraServiceListener;
31class ICameraDeviceUser;
32class ICameraDeviceCallbacks;
33class CameraMetadata;
34class VendorTagDescriptor;
35class String16;
36
37class ICameraService : public IInterface
38{
39public:
40    /**
41     * Keep up-to-date with ICameraService.aidl in frameworks/base
42     */
43    enum {
44        GET_NUMBER_OF_CAMERAS = IBinder::FIRST_CALL_TRANSACTION,
45        GET_CAMERA_INFO,
46        CONNECT,
47        CONNECT_PRO,
48        CONNECT_DEVICE,
49        ADD_LISTENER,
50        REMOVE_LISTENER,
51        GET_CAMERA_CHARACTERISTICS,
52        GET_CAMERA_VENDOR_TAG_DESCRIPTOR,
53        GET_LEGACY_PARAMETERS,
54        SUPPORTS_CAMERA_API,
55    };
56
57    enum {
58        USE_CALLING_UID = -1
59    };
60
61    enum {
62        API_VERSION_1 = 1,
63        API_VERSION_2 = 2,
64    };
65
66public:
67    DECLARE_META_INTERFACE(CameraService);
68
69    virtual int32_t  getNumberOfCameras() = 0;
70    virtual status_t getCameraInfo(int cameraId,
71            /*out*/
72            struct CameraInfo* cameraInfo) = 0;
73
74    virtual status_t getCameraCharacteristics(int cameraId,
75            /*out*/
76            CameraMetadata* cameraInfo) = 0;
77
78    virtual status_t getCameraVendorTagDescriptor(
79            /*out*/
80            sp<VendorTagDescriptor>& desc) = 0;
81
82    // Returns 'OK' if operation succeeded
83    // - Errors: ALREADY_EXISTS if the listener was already added
84    virtual status_t addListener(const sp<ICameraServiceListener>& listener)
85                                                                            = 0;
86    // Returns 'OK' if operation succeeded
87    // - Errors: BAD_VALUE if specified listener was not in the listener list
88    virtual status_t removeListener(const sp<ICameraServiceListener>& listener)
89                                                                            = 0;
90    /**
91     * clientPackageName and clientUid are used for permissions checking.  if
92     * clientUid == USE_CALLING_UID, then the calling UID is used instead. Only
93     * trusted callers can set a clientUid other than USE_CALLING_UID.
94     */
95    virtual status_t connect(const sp<ICameraClient>& cameraClient,
96            int cameraId,
97            const String16& clientPackageName,
98            int clientUid,
99            /*out*/
100            sp<ICamera>& device) = 0;
101
102    virtual status_t connectPro(const sp<IProCameraCallbacks>& cameraCb,
103            int cameraId,
104            const String16& clientPackageName,
105            int clientUid,
106            /*out*/
107            sp<IProCameraUser>& device) = 0;
108
109    virtual status_t connectDevice(
110            const sp<ICameraDeviceCallbacks>& cameraCb,
111            int cameraId,
112            const String16& clientPackageName,
113            int clientUid,
114            /*out*/
115            sp<ICameraDeviceUser>& device) = 0;
116
117    virtual status_t getLegacyParameters(
118            int cameraId,
119            /*out*/
120            String16* parameters) = 0;
121
122    /**
123     * Returns OK if device supports camera2 api,
124     * returns -EOPNOTSUPP if it doesn't.
125     */
126    virtual status_t supportsCameraApi(
127            int cameraId, int apiVersion) = 0;
128};
129
130// ----------------------------------------------------------------------------
131
132class BnCameraService: public BnInterface<ICameraService>
133{
134public:
135    virtual status_t    onTransact( uint32_t code,
136                                    const Parcel& data,
137                                    Parcel* reply,
138                                    uint32_t flags = 0);
139};
140
141}; // namespace android
142
143#endif
144