ICameraService.h revision bef3f23f16f2fc575b3f425febcfcc436a7db70f 
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;
31
32class ICameraService : public IInterface
33{
34public:
35    /**
36     * Keep up-to-date with ICameraService.aidl in frameworks/base
37     */
38    enum {
39        GET_NUMBER_OF_CAMERAS = IBinder::FIRST_CALL_TRANSACTION,
40        GET_CAMERA_INFO,
41        CONNECT,
42        CONNECT_PRO,
43        ADD_LISTENER,
44        REMOVE_LISTENER,
45    };
46
47    enum {
48        USE_CALLING_UID = -1
49    };
50
51public:
52    DECLARE_META_INTERFACE(CameraService);
53
54    virtual int32_t  getNumberOfCameras() = 0;
55    virtual status_t getCameraInfo(int cameraId,
56                                          struct CameraInfo* cameraInfo) = 0;
57
58    // Returns 'OK' if operation succeeded
59    // - Errors: ALREADY_EXISTS if the listener was already added
60    virtual status_t addListener(const sp<ICameraServiceListener>& listener)
61                                                                            = 0;
62    // Returns 'OK' if operation succeeded
63    // - Errors: BAD_VALUE if specified listener was not in the listener list
64    virtual status_t removeListener(const sp<ICameraServiceListener>& listener)
65                                                                            = 0;
66    /**
67     * clientPackageName and clientUid are used for permissions checking.  if
68     * clientUid == USE_CALLING_UID, then the calling UID is used instead. Only
69     * trusted callers can set a clientUid other than USE_CALLING_UID.
70     */
71    virtual sp<ICamera> connect(const sp<ICameraClient>& cameraClient,
72            int cameraId,
73            const String16& clientPackageName,
74            int clientUid) = 0;
75
76    virtual sp<IProCameraUser> connect(const sp<IProCameraCallbacks>& cameraCb,
77            int cameraId,
78            const String16& clientPackageName,
79            int clientUid) = 0;
80};
81
82// ----------------------------------------------------------------------------
83
84class BnCameraService: public BnInterface<ICameraService>
85{
86public:
87    virtual status_t    onTransact( uint32_t code,
88                                    const Parcel& data,
89                                    Parcel* reply,
90                                    uint32_t flags = 0);
91};
92
93}; // namespace android
94
95#endif
96