ICameraService.h revision 2b59be89dc245b6e2475d9e8b0c5f2392370e71e 
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;
34
35class ICameraService : public IInterface
36{
37public:
38    /**
39     * Keep up-to-date with ICameraService.aidl in frameworks/base
40     */
41    enum {
42        GET_NUMBER_OF_CAMERAS = IBinder::FIRST_CALL_TRANSACTION,
43        GET_CAMERA_INFO,
44        CONNECT,
45        CONNECT_PRO,
46        CONNECT_DEVICE,
47        ADD_LISTENER,
48        REMOVE_LISTENER,
49        GET_CAMERA_CHARACTERISTICS,
50    };
51
52    enum {
53        USE_CALLING_UID = -1
54    };
55
56public:
57    DECLARE_META_INTERFACE(CameraService);
58
59    virtual int32_t  getNumberOfCameras() = 0;
60    virtual status_t getCameraInfo(int cameraId,
61                                          struct CameraInfo* cameraInfo) = 0;
62
63    virtual status_t getCameraCharacteristics(int cameraId,
64                                              CameraMetadata* cameraInfo) = 0;
65
66    // Returns 'OK' if operation succeeded
67    // - Errors: ALREADY_EXISTS if the listener was already added
68    virtual status_t addListener(const sp<ICameraServiceListener>& listener)
69                                                                            = 0;
70    // Returns 'OK' if operation succeeded
71    // - Errors: BAD_VALUE if specified listener was not in the listener list
72    virtual status_t removeListener(const sp<ICameraServiceListener>& listener)
73                                                                            = 0;
74    /**
75     * clientPackageName and clientUid are used for permissions checking.  if
76     * clientUid == USE_CALLING_UID, then the calling UID is used instead. Only
77     * trusted callers can set a clientUid other than USE_CALLING_UID.
78     */
79    virtual status_t connect(const sp<ICameraClient>& cameraClient,
80            int cameraId,
81            const String16& clientPackageName,
82            int clientUid,
83            /*out*/
84            sp<ICamera>& device) = 0;
85
86    virtual status_t connectPro(const sp<IProCameraCallbacks>& cameraCb,
87            int cameraId,
88            const String16& clientPackageName,
89            int clientUid,
90            /*out*/
91            sp<IProCameraUser>& device) = 0;
92
93    virtual status_t connectDevice(
94            const sp<ICameraDeviceCallbacks>& cameraCb,
95            int cameraId,
96            const String16& clientPackageName,
97            int clientUid,
98            /*out*/
99            sp<ICameraDeviceUser>& device) = 0;
100};
101
102// ----------------------------------------------------------------------------
103
104class BnCameraService: public BnInterface<ICameraService>
105{
106public:
107    virtual status_t    onTransact( uint32_t code,
108                                    const Parcel& data,
109                                    Parcel* reply,
110                                    uint32_t flags = 0);
111};
112
113}; // namespace android
114
115#endif
116