ISensorEventConnection.cpp revision 589ce85ee4174829cfedce91b6b2509d2a4002eb 
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/SensorChannel.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<SensorChannel> getSensorChannel() const
48    {
49        Parcel data, reply;
50        remote()->transact(GET_SENSOR_CHANNEL, data, &reply);
51        return new SensorChannel(reply);
52    }
53
54    virtual status_t enableDisable(int handle, bool enabled)
55    {
56        Parcel data, reply;
57        data.writeInt32(handle);
58        data.writeInt32(enabled);
59        remote()->transact(ENABLE_DISABLE, data, &reply);
60        return reply.readInt32();
61    }
62
63    virtual status_t setEventRate(int handle, nsecs_t ns)
64    {
65        Parcel data, reply;
66        data.writeInt32(handle);
67        data.writeInt64(ns);
68        remote()->transact(SET_EVENT_RATE, data, &reply);
69        return reply.readInt32();
70    }
71};
72
73IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
74
75// ----------------------------------------------------------------------------
76
77status_t BnSensorEventConnection::onTransact(
78    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
79{
80    switch(code) {
81        case GET_SENSOR_CHANNEL: {
82            CHECK_INTERFACE(ISensorEventConnection, data, reply);
83            sp<SensorChannel> channel(getSensorChannel());
84            channel->writeToParcel(reply);
85            return NO_ERROR;
86        } break;
87        case ENABLE_DISABLE: {
88            CHECK_INTERFACE(ISensorEventConnection, data, reply);
89            int handle = data.readInt32();
90            int enabled = data.readInt32();
91            status_t result = enableDisable(handle, enabled);
92            reply->writeInt32(result);
93            return NO_ERROR;
94        } break;
95        case SET_EVENT_RATE: {
96            CHECK_INTERFACE(ISensorEventConnection, data, reply);
97            int handle = data.readInt32();
98            int ns = data.readInt64();
99            status_t result = setEventRate(handle, ns);
100            reply->writeInt32(result);
101            return NO_ERROR;
102        } break;
103    }
104    return BBinder::onTransact(code, data, reply, flags);
105}
106
107// ----------------------------------------------------------------------------
108}; // namespace android
109