1 /*
2 * Copyright (C) 2011 Samsung
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 <fcntl.h>
18 #include <errno.h>
19 #include <math.h>
20 #include <poll.h>
21 #include <unistd.h>
22 #include <dirent.h>
23 #include <sys/select.h>
24 #include <pthread.h>
25
26 #include <cutils/log.h>
27
28 #include "ProximitySensor.h"
29
30 /*****************************************************************************/
31
ProximitySensor()32 ProximitySensor::ProximitySensor()
33 : SamsungSensorBase(NULL, "proximity", ABS_DISTANCE)
34 {
35 mPendingEvent.sensor = ID_P;
36 mPendingEvent.type = SENSOR_TYPE_PROXIMITY;
37 }
38
setDelay(int32_t handle,int64_t ns)39 int ProximitySensor::setDelay(int32_t handle, int64_t ns)
40 {
41 return -1;
42 }
43
indexToValue(size_t index) const44 float ProximitySensor::indexToValue(size_t index) const
45 {
46 return index * PROXIMITY_THRESHOLD_GP2A;
47 }
48
hasPendingEvents() const49 bool ProximitySensor::hasPendingEvents() const {
50 return mHasPendingEvent;
51 }
52
handleEnable(int en)53 int ProximitySensor::handleEnable(int en) {
54 if (!en)
55 return 0;
56
57 struct input_absinfo absinfo;
58 if (!ioctl(data_fd, EVIOCGABS(ABS_DISTANCE), &absinfo)) {
59 mHasPendingEvent = true;
60 mPendingEvent.distance = indexToValue(absinfo.value);
61 return 0;
62 } else {
63 return -1;
64 }
65 }
66
handleEvent(input_event const * event)67 bool ProximitySensor::handleEvent(input_event const *event) {
68 mPendingEvent.distance = indexToValue(event->value);
69 return true;
70 }
71