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 <stdint.h>
18 #include <sys/types.h>
19
20 #include <utils/Errors.h>
21 #include <utils/RefBase.h>
22 #include <utils/Timers.h>
23
24 #include <binder/Parcel.h>
25 #include <binder/IInterface.h>
26
27 #include <gui/ISensorEventConnection.h>
28 #include <gui/BitTube.h>
29
30 namespace android {
31 // ----------------------------------------------------------------------------
32
33 enum {
34 GET_SENSOR_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,
35 ENABLE_DISABLE,
36 SET_EVENT_RATE,
37 FLUSH_SENSOR
38 };
39
40 class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
41 {
42 public:
BpSensorEventConnection(const sp<IBinder> & impl)43 BpSensorEventConnection(const sp<IBinder>& impl)
44 : BpInterface<ISensorEventConnection>(impl)
45 {
46 }
47
48 virtual ~BpSensorEventConnection();
49
getSensorChannel() const50 virtual sp<BitTube> getSensorChannel() const
51 {
52 Parcel data, reply;
53 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
54 remote()->transact(GET_SENSOR_CHANNEL, data, &reply);
55 return new BitTube(reply);
56 }
57
enableDisable(int handle,bool enabled,nsecs_t samplingPeriodNs,nsecs_t maxBatchReportLatencyNs,int reservedFlags)58 virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
59 nsecs_t maxBatchReportLatencyNs, int reservedFlags)
60 {
61 Parcel data, reply;
62 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
63 data.writeInt32(handle);
64 data.writeInt32(enabled);
65 data.writeInt64(samplingPeriodNs);
66 data.writeInt64(maxBatchReportLatencyNs);
67 data.writeInt32(reservedFlags);
68 remote()->transact(ENABLE_DISABLE, data, &reply);
69 return reply.readInt32();
70 }
71
setEventRate(int handle,nsecs_t ns)72 virtual status_t setEventRate(int handle, nsecs_t ns)
73 {
74 Parcel data, reply;
75 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
76 data.writeInt32(handle);
77 data.writeInt64(ns);
78 remote()->transact(SET_EVENT_RATE, data, &reply);
79 return reply.readInt32();
80 }
81
flush()82 virtual status_t flush() {
83 Parcel data, reply;
84 data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
85 remote()->transact(FLUSH_SENSOR, data, &reply);
86 return reply.readInt32();
87 }
88 };
89
90 // Out-of-line virtual method definition to trigger vtable emission in this
91 // translation unit (see clang warning -Wweak-vtables)
~BpSensorEventConnection()92 BpSensorEventConnection::~BpSensorEventConnection() {}
93
94 IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
95
96 // ----------------------------------------------------------------------------
97
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)98 status_t BnSensorEventConnection::onTransact(
99 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
100 {
101 switch(code) {
102 case GET_SENSOR_CHANNEL: {
103 CHECK_INTERFACE(ISensorEventConnection, data, reply);
104 sp<BitTube> channel(getSensorChannel());
105 channel->writeToParcel(reply);
106 return NO_ERROR;
107 }
108 case ENABLE_DISABLE: {
109 CHECK_INTERFACE(ISensorEventConnection, data, reply);
110 int handle = data.readInt32();
111 int enabled = data.readInt32();
112 nsecs_t samplingPeriodNs = data.readInt64();
113 nsecs_t maxBatchReportLatencyNs = data.readInt64();
114 int reservedFlags = data.readInt32();
115 status_t result = enableDisable(handle, enabled, samplingPeriodNs,
116 maxBatchReportLatencyNs, reservedFlags);
117 reply->writeInt32(result);
118 return NO_ERROR;
119 }
120 case SET_EVENT_RATE: {
121 CHECK_INTERFACE(ISensorEventConnection, data, reply);
122 int handle = data.readInt32();
123 nsecs_t ns = data.readInt64();
124 status_t result = setEventRate(handle, ns);
125 reply->writeInt32(result);
126 return NO_ERROR;
127 }
128 case FLUSH_SENSOR: {
129 CHECK_INTERFACE(ISensorEventConnection, data, reply);
130 status_t result = flush();
131 reply->writeInt32(result);
132 return NO_ERROR;
133 }
134 }
135 return BBinder::onTransact(code, data, reply, flags);
136 }
137
138 // ----------------------------------------------------------------------------
139 }; // namespace android
140