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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdint.h>
#include <math.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <hardware/sensors.h>
#include "LegacyLinearAccelerationSensor.h"
#include "../SensorDevice.h"
#include "../SensorFusion.h"
namespace android {
// ---------------------------------------------------------------------------
LegacyLinearAccelerationSensor::LegacyLinearAccelerationSensor(sensor_t const* list, size_t count)
: mSensorDevice(SensorDevice::getInstance()),
mGravitySensor(list, count)
{
mData[0] = mData[1] = mData[2] = 0;
}
bool LegacyLinearAccelerationSensor::process(sensors_event_t* outEvent,
const sensors_event_t& event)
{
bool result = mGravitySensor.process(outEvent, event);
if (result) {
if (event.type == SENSOR_TYPE_ACCELEROMETER) {
mData[0] = event.acceleration.x;
mData[1] = event.acceleration.y;
mData[2] = event.acceleration.z;
}
outEvent->data[0] = mData[0] - outEvent->data[0];
outEvent->data[1] = mData[1] - outEvent->data[1];
outEvent->data[2] = mData[2] - outEvent->data[2];
outEvent->sensor = '_lin';
outEvent->type = SENSOR_TYPE_LINEAR_ACCELERATION;
}
return result;
}
status_t LegacyLinearAccelerationSensor::activate(void* ident, bool enabled) {
return mGravitySensor.activate(this, enabled);
}
status_t LegacyLinearAccelerationSensor::setDelay(void* ident, int handle, int64_t ns) {
return mGravitySensor.setDelay(this, handle, ns);
}
Sensor LegacyLinearAccelerationSensor::getSensor() const {
Sensor gsensor(mGravitySensor.getSensor());
sensor_t hwSensor;
hwSensor.name = "Linear Acceleration Sensor";
hwSensor.vendor = "Google Inc.";
hwSensor.version = gsensor.getVersion();
hwSensor.handle = '_lin';
hwSensor.type = SENSOR_TYPE_LINEAR_ACCELERATION;
hwSensor.maxRange = gsensor.getMaxValue();
hwSensor.resolution = gsensor.getResolution();
hwSensor.power = gsensor.getPowerUsage();
hwSensor.minDelay = gsensor.getMinDelay();
Sensor sensor(&hwSensor);
return sensor;
}
// ---------------------------------------------------------------------------
}; // namespace android
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