1 /*
2 **
3 ** Copyright 2008, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #include <stdint.h>
19 #include <sys/types.h>
20
21 #include <binder/Parcel.h>
22 #include <binder/IPCThreadState.h>
23 #include <binder/IServiceManager.h>
24
25 #include <camera/ICameraService.h>
26
27 namespace android {
28
29 class BpCameraService: public BpInterface<ICameraService>
30 {
31 public:
BpCameraService(const sp<IBinder> & impl)32 BpCameraService(const sp<IBinder>& impl)
33 : BpInterface<ICameraService>(impl)
34 {
35 }
36
37 // get number of cameras available
getNumberOfCameras()38 virtual int32_t getNumberOfCameras()
39 {
40 Parcel data, reply;
41 data.writeInterfaceToken(ICameraService::getInterfaceDescriptor());
42 remote()->transact(BnCameraService::GET_NUMBER_OF_CAMERAS, data, &reply);
43 return reply.readInt32();
44 }
45
46 // get information about a camera
getCameraInfo(int cameraId,struct CameraInfo * cameraInfo)47 virtual status_t getCameraInfo(int cameraId,
48 struct CameraInfo* cameraInfo) {
49 Parcel data, reply;
50 data.writeInterfaceToken(ICameraService::getInterfaceDescriptor());
51 data.writeInt32(cameraId);
52 remote()->transact(BnCameraService::GET_CAMERA_INFO, data, &reply);
53 cameraInfo->facing = reply.readInt32();
54 cameraInfo->orientation = reply.readInt32();
55 return reply.readInt32();
56 }
57
58 // connect to camera service
connect(const sp<ICameraClient> & cameraClient,int cameraId)59 virtual sp<ICamera> connect(const sp<ICameraClient>& cameraClient, int cameraId)
60 {
61 Parcel data, reply;
62 data.writeInterfaceToken(ICameraService::getInterfaceDescriptor());
63 data.writeStrongBinder(cameraClient->asBinder());
64 data.writeInt32(cameraId);
65 remote()->transact(BnCameraService::CONNECT, data, &reply);
66 return interface_cast<ICamera>(reply.readStrongBinder());
67 }
68 };
69
70 IMPLEMENT_META_INTERFACE(CameraService, "android.hardware.ICameraService");
71
72 // ----------------------------------------------------------------------
73
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)74 status_t BnCameraService::onTransact(
75 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
76 {
77 switch(code) {
78 case GET_NUMBER_OF_CAMERAS: {
79 CHECK_INTERFACE(ICameraService, data, reply);
80 reply->writeInt32(getNumberOfCameras());
81 return NO_ERROR;
82 } break;
83 case GET_CAMERA_INFO: {
84 CHECK_INTERFACE(ICameraService, data, reply);
85 CameraInfo cameraInfo;
86 memset(&cameraInfo, 0, sizeof(cameraInfo));
87 status_t result = getCameraInfo(data.readInt32(), &cameraInfo);
88 reply->writeInt32(cameraInfo.facing);
89 reply->writeInt32(cameraInfo.orientation);
90 reply->writeInt32(result);
91 return NO_ERROR;
92 } break;
93 case CONNECT: {
94 CHECK_INTERFACE(ICameraService, data, reply);
95 sp<ICameraClient> cameraClient = interface_cast<ICameraClient>(data.readStrongBinder());
96 sp<ICamera> camera = connect(cameraClient, data.readInt32());
97 reply->writeStrongBinder(camera->asBinder());
98 return NO_ERROR;
99 } break;
100 default:
101 return BBinder::onTransact(code, data, reply, flags);
102 }
103 }
104
105 // ----------------------------------------------------------------------------
106
107 }; // namespace android
108