ISensorEventConnection.cpp revision 5cae0d0699a169e468fff3e21165f35db12f2cde 
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};
38
39class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
40{
41public:
42    BpSensorEventConnection(const sp<IBinder>& impl)
43        : BpInterface<ISensorEventConnection>(impl)
44    {
45    }
46
47    virtual sp<BitTube> getSensorChannel() const
48    {
49        Parcel data, reply;
50        data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
51        remote()->transact(GET_SENSOR_CHANNEL, data, &reply);
52        return new BitTube(reply);
53    }
54
55    virtual status_t enableDisable(int handle, bool enabled)
56    {
57        Parcel data, reply;
58        data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
59        data.writeInt32(handle);
60        data.writeInt32(enabled);
61        remote()->transact(ENABLE_DISABLE, data, &reply);
62        return reply.readInt32();
63    }
64
65    virtual status_t setEventRate(int handle, nsecs_t ns)
66    {
67        Parcel data, reply;
68        data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
69        data.writeInt32(handle);
70        data.writeInt64(ns);
71        remote()->transact(SET_EVENT_RATE, data, &reply);
72        return reply.readInt32();
73    }
74};
75
76IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
77
78// ----------------------------------------------------------------------------
79
80status_t BnSensorEventConnection::onTransact(
81    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
82{
83    switch(code) {
84        case GET_SENSOR_CHANNEL: {
85            CHECK_INTERFACE(ISensorEventConnection, data, reply);
86            sp<BitTube> channel(getSensorChannel());
87            channel->writeToParcel(reply);
88            return NO_ERROR;
89        } break;
90        case ENABLE_DISABLE: {
91            CHECK_INTERFACE(ISensorEventConnection, data, reply);
92            int handle = data.readInt32();
93            int enabled = data.readInt32();
94            status_t result = enableDisable(handle, enabled);
95            reply->writeInt32(result);
96            return NO_ERROR;
97        } break;
98        case SET_EVENT_RATE: {
99            CHECK_INTERFACE(ISensorEventConnection, data, reply);
100            int handle = data.readInt32();
101            int ns = data.readInt64();
102            status_t result = setEventRate(handle, ns);
103            reply->writeInt32(result);
104            return NO_ERROR;
105        } break;
106    }
107    return BBinder::onTransact(code, data, reply, flags);
108}
109
110// ----------------------------------------------------------------------------
111}; // namespace android
112