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
30namespace android {
31// ----------------------------------------------------------------------------
32
33enum {
34    GET_SENSOR_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,
35    ENABLE_DISABLE,
36    SET_EVENT_RATE,
37    FLUSH_SENSOR
38};
39
40class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
41{
42public:
43    BpSensorEventConnection(const sp<IBinder>& impl)
44        : BpInterface<ISensorEventConnection>(impl)
45    {
46    }
47
48    virtual ~BpSensorEventConnection();
49
50    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
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
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
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)
92BpSensorEventConnection::~BpSensorEventConnection() {}
93
94IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
95
96// ----------------------------------------------------------------------------
97
98status_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