1 /*
2 * Copyright (C) 2010 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 #include <sensor/ISensorEventConnection.h>
18
19 #include <stdint.h>
20 #include <sys/types.h>
21
22 #include <utils/Errors.h>
23 #include <utils/RefBase.h>
24 #include <utils/Timers.h>
25
26 #include <binder/Parcel.h>
27 #include <binder/IInterface.h>
28
29 #include <sensor/BitTube.h>
30
31 namespace android {
32 // ----------------------------------------------------------------------------
33
34 enum {
35 GET_SENSOR_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,
36 ENABLE_DISABLE,
37 SET_EVENT_RATE,
38 FLUSH_SENSOR,
39 CONFIGURE_CHANNEL,
40 DESTROY,
41 };
42
43 class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
44 {
45 public:
BpSensorEventConnection(const sp<IBinder> & impl)46 explicit BpSensorEventConnection(const sp<IBinder>& impl)
47 : BpInterface<ISensorEventConnection>(impl)
48 {
49 }
50
51 virtual ~BpSensorEventConnection();
52
getSensorChannel() const53 virtual sp<BitTube> getSensorChannel() const
54 {
55 Parcel data, reply;
56 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
57 remote()->transact(GET_SENSOR_CHANNEL, data, &reply);
58 return new BitTube(reply);
59 }
60
enableDisable(int handle,bool enabled,nsecs_t samplingPeriodNs,nsecs_t maxBatchReportLatencyNs,int reservedFlags)61 virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
62 nsecs_t maxBatchReportLatencyNs, int reservedFlags)
63 {
64 Parcel data, reply;
65 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
66 data.writeInt32(handle);
67 data.writeInt32(enabled);
68 data.writeInt64(samplingPeriodNs);
69 data.writeInt64(maxBatchReportLatencyNs);
70 data.writeInt32(reservedFlags);
71 remote()->transact(ENABLE_DISABLE, data, &reply);
72 return reply.readInt32();
73 }
74
setEventRate(int handle,nsecs_t ns)75 virtual status_t setEventRate(int handle, nsecs_t ns)
76 {
77 Parcel data, reply;
78 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
79 data.writeInt32(handle);
80 data.writeInt64(ns);
81 remote()->transact(SET_EVENT_RATE, data, &reply);
82 return reply.readInt32();
83 }
84
flush()85 virtual status_t flush() {
86 Parcel data, reply;
87 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
88 remote()->transact(FLUSH_SENSOR, data, &reply);
89 return reply.readInt32();
90 }
91
configureChannel(int32_t handle,int32_t rateLevel)92 virtual int32_t configureChannel(int32_t handle, int32_t rateLevel) {
93 Parcel data, reply;
94 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
95 data.writeInt32(handle);
96 data.writeInt32(rateLevel);
97 remote()->transact(CONFIGURE_CHANNEL, data, &reply);
98 return reply.readInt32();
99 }
100
onLastStrongRef(const void * id)101 virtual void onLastStrongRef(const void* id) {
102 destroy();
103 BpInterface<ISensorEventConnection>::onLastStrongRef(id);
104 }
105
106 protected:
destroy()107 virtual void destroy() {
108 Parcel data, reply;
109 remote()->transact(DESTROY, data, &reply);
110 }
111 };
112
113 // Out-of-line virtual method definition to trigger vtable emission in this
114 // translation unit (see clang warning -Wweak-vtables)
~BpSensorEventConnection()115 BpSensorEventConnection::~BpSensorEventConnection() { }
116
117 IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
118
119 // ----------------------------------------------------------------------------
120
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)121 status_t BnSensorEventConnection::onTransact(
122 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
123 {
124 switch(code) {
125 case GET_SENSOR_CHANNEL: {
126 CHECK_INTERFACE(ISensorEventConnection, data, reply);
127 sp<BitTube> channel(getSensorChannel());
128 channel->writeToParcel(reply);
129 return NO_ERROR;
130 }
131 case ENABLE_DISABLE: {
132 CHECK_INTERFACE(ISensorEventConnection, data, reply);
133 int handle = data.readInt32();
134 int enabled = data.readInt32();
135 nsecs_t samplingPeriodNs = data.readInt64();
136 nsecs_t maxBatchReportLatencyNs = data.readInt64();
137 int reservedFlags = data.readInt32();
138 status_t result = enableDisable(handle, enabled, samplingPeriodNs,
139 maxBatchReportLatencyNs, reservedFlags);
140 reply->writeInt32(result);
141 return NO_ERROR;
142 }
143 case SET_EVENT_RATE: {
144 CHECK_INTERFACE(ISensorEventConnection, data, reply);
145 int handle = data.readInt32();
146 nsecs_t ns = data.readInt64();
147 status_t result = setEventRate(handle, ns);
148 reply->writeInt32(result);
149 return NO_ERROR;
150 }
151 case FLUSH_SENSOR: {
152 CHECK_INTERFACE(ISensorEventConnection, data, reply);
153 status_t result = flush();
154 reply->writeInt32(result);
155 return NO_ERROR;
156 }
157 case CONFIGURE_CHANNEL: {
158 CHECK_INTERFACE(ISensorEventConnection, data, reply);
159 int handle = data.readInt32();
160 int rateLevel = data.readInt32();
161 status_t result = configureChannel(handle, rateLevel);
162 reply->writeInt32(result);
163 return NO_ERROR;
164 }
165 case DESTROY: {
166 destroy();
167 return NO_ERROR;
168 }
169
170 }
171 return BBinder::onTransact(code, data, reply, flags);
172 }
173
174 // ----------------------------------------------------------------------------
175 }; // namespace android
176