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 };
41
42 class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
43 {
44 public:
BpSensorEventConnection(const sp<IBinder> & impl)45 explicit BpSensorEventConnection(const sp<IBinder>& impl)
46 : BpInterface<ISensorEventConnection>(impl)
47 {
48 }
49
50 virtual ~BpSensorEventConnection();
51
getSensorChannel() const52 virtual sp<BitTube> getSensorChannel() const
53 {
54 Parcel data, reply;
55 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
56 remote()->transact(GET_SENSOR_CHANNEL, data, &reply);
57 return new BitTube(reply);
58 }
59
enableDisable(int handle,bool enabled,nsecs_t samplingPeriodNs,nsecs_t maxBatchReportLatencyNs,int reservedFlags)60 virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
61 nsecs_t maxBatchReportLatencyNs, int reservedFlags)
62 {
63 Parcel data, reply;
64 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
65 data.writeInt32(handle);
66 data.writeInt32(enabled);
67 data.writeInt64(samplingPeriodNs);
68 data.writeInt64(maxBatchReportLatencyNs);
69 data.writeInt32(reservedFlags);
70 remote()->transact(ENABLE_DISABLE, data, &reply);
71 return reply.readInt32();
72 }
73
setEventRate(int handle,nsecs_t ns)74 virtual status_t setEventRate(int handle, nsecs_t ns)
75 {
76 Parcel data, reply;
77 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
78 data.writeInt32(handle);
79 data.writeInt64(ns);
80 remote()->transact(SET_EVENT_RATE, data, &reply);
81 return reply.readInt32();
82 }
83
flush()84 virtual status_t flush() {
85 Parcel data, reply;
86 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
87 remote()->transact(FLUSH_SENSOR, data, &reply);
88 return reply.readInt32();
89 }
90
configureChannel(int32_t handle,int32_t rateLevel)91 virtual int32_t configureChannel(int32_t handle, int32_t rateLevel) {
92 Parcel data, reply;
93 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
94 data.writeInt32(handle);
95 data.writeInt32(rateLevel);
96 remote()->transact(CONFIGURE_CHANNEL, data, &reply);
97 return reply.readInt32();
98 }
99 };
100
101 // Out-of-line virtual method definition to trigger vtable emission in this
102 // translation unit (see clang warning -Wweak-vtables)
~BpSensorEventConnection()103 BpSensorEventConnection::~BpSensorEventConnection() {}
104
105 IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
106
107 // ----------------------------------------------------------------------------
108
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)109 status_t BnSensorEventConnection::onTransact(
110 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
111 {
112 switch(code) {
113 case GET_SENSOR_CHANNEL: {
114 CHECK_INTERFACE(ISensorEventConnection, data, reply);
115 sp<BitTube> channel(getSensorChannel());
116 channel->writeToParcel(reply);
117 return NO_ERROR;
118 }
119 case ENABLE_DISABLE: {
120 CHECK_INTERFACE(ISensorEventConnection, data, reply);
121 int handle = data.readInt32();
122 int enabled = data.readInt32();
123 nsecs_t samplingPeriodNs = data.readInt64();
124 nsecs_t maxBatchReportLatencyNs = data.readInt64();
125 int reservedFlags = data.readInt32();
126 status_t result = enableDisable(handle, enabled, samplingPeriodNs,
127 maxBatchReportLatencyNs, reservedFlags);
128 reply->writeInt32(result);
129 return NO_ERROR;
130 }
131 case SET_EVENT_RATE: {
132 CHECK_INTERFACE(ISensorEventConnection, data, reply);
133 int handle = data.readInt32();
134 nsecs_t ns = data.readInt64();
135 status_t result = setEventRate(handle, ns);
136 reply->writeInt32(result);
137 return NO_ERROR;
138 }
139 case FLUSH_SENSOR: {
140 CHECK_INTERFACE(ISensorEventConnection, data, reply);
141 status_t result = flush();
142 reply->writeInt32(result);
143 return NO_ERROR;
144 }
145 case CONFIGURE_CHANNEL: {
146 CHECK_INTERFACE(ISensorEventConnection, data, reply);
147 int handle = data.readInt32();
148 int rateLevel = data.readInt32();
149 status_t result = configureChannel(handle, rateLevel);
150 reply->writeInt32(result);
151 return NO_ERROR;
152 }
153
154 }
155 return BBinder::onTransact(code, data, reply, flags);
156 }
157
158 // ----------------------------------------------------------------------------
159 }; // namespace android
160