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magcalibrationchain.cpp
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magcalibrationchain.cpp
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/****************************************************************************
**
** Copyright (C) 2013 Jolla Ltd
This file is part of Sensord.
Sensord is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License
version 2.1 as published by the Free Software Foundation.
Sensord is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Sensord. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QVariant>
#include <QStringList>
#include <QDebug>
#include "magcalibrationchain.h"
#include "sensormanager.h"
#include "bin.h"
#include "bufferreader.h"
#include "config.h"
#include "logging.h"
#include "calibrationfilter.h"
#include "magcoordinatealignfilter.h"
#include "datatypes/orientationdata.h"
// magcalibrationchain requires: magnetometeradaptor, kbslideradaptor
MagCalibrationChain::MagCalibrationChain(const QString& id) :
AbstractChain(id),
filterBin(NULL),
magAdaptor(NULL),
magReader(NULL),
magCalFilter(NULL),
magScaleFilter(NULL),
magCoordinateAlignFilter_(NULL),
calibratedMagnetometerData(NULL)
{
setMatrixFromString("1,0,0,\
0,1,0,\
0,0,1");
SensorManager& sm = SensorManager::instance();
magAdaptor = sm.requestDeviceAdaptor("magnetometeradaptor");
// valid is false by default so no need to set it if magnetormeter adaptor is not there
if (magAdaptor)
setValid(magAdaptor->isValid());
// SensorFrameworkConfig::configuration()->value<int>("magnetometer/interval_compensation", 16);
// Get the transformation matrix from config file
QString aconvString = SensorFrameworkConfig::configuration()->value<QString>("magnetometer/transformation_matrix", "");
if (aconvString.size() > 0) {
if (!setMatrixFromString(aconvString)) {
sensordLogW()<< NodeBase::id() << "Failed to parse 'transformation_matrix' configuration key. Coordinate alignment may be invalid";
}
}
needsCalibration = SensorFrameworkConfig::configuration()->value<bool>("magnetometer/needs_calibration", true);
calibratedMagnetometerData = new RingBuffer<CalibratedMagneticFieldData>(1);
nameOutputBuffer("calibratedmagnetometerdata", calibratedMagnetometerData);
// Create buffers for filter chain
filterBin = new Bin;
//formationsink
magReader = new BufferReader<CalibratedMagneticFieldData>(1);
// Join filterchain buffers
filterBin->add(magReader, "calibratedmagneticfield");
filterBin->add(calibratedMagnetometerData, "calibratedmagnetometerdata"); //calibration
if (sm.getAdaptorTypes().contains("orientationadaptor")) {
DeviceAdaptor *orientAdaptor = sm.requestDeviceAdaptor("orientationadaptor");
if (orientAdaptor && orientAdaptor->isValid()) {
needsCalibration = false;
}
}
magCoordinateAlignFilter_ = sm.instantiateFilter("magcoordinatealignfilter");
Q_ASSERT(magCoordinateAlignFilter_);
filterBin->add(magCoordinateAlignFilter_, "magcoordinatealigner");
if (needsCalibration) {
magCalFilter = sm.instantiateFilter("calibrationfilter");
((MagCoordinateAlignFilter*)magCoordinateAlignFilter_)->setMatrix(TMagMatrix(aconv_));
filterBin->add(magCalFilter, "calibration");
if (!filterBin->join("calibratedmagneticfield", "source", "magcoordinatealigner", "sink"))
qDebug()<< NodeBase::id() << Q_FUNC_INFO << "calibratedmagneticfield/magcoordinatealigner join failed";
if (!filterBin->join("magcoordinatealigner", "source", "calibration", "magsink"))
qDebug()<< NodeBase::id() << Q_FUNC_INFO << "magcoordinatealigner/calibration join failed";
if (!filterBin->join("calibration", "source", "calibratedmagnetometerdata", "sink"))
qDebug()<< NodeBase::id() << Q_FUNC_INFO << "calibration/calibratedmagnetometerdata join failed";
} else {
if (!filterBin->join("calibratedmagneticfield", "source", "magcoordinatealigner", "sink"))
qDebug()<< NodeBase::id() << Q_FUNC_INFO << "calibratedmagneticfield/magcoordinatealigner join failed";
if (!filterBin->join("magcoordinatealigner", "source", "calibratedmagnetometerdata", "sink"))
qDebug()<< NodeBase::id() << Q_FUNC_INFO << "magcoordinatealigner/calibratedmagnetometerdata join failed";
}
// Join datasources to the chain
connectToSource(magAdaptor, "calibratedmagneticfield", magReader);
setDescription("Calibrated Mag values"); //Magnetometer calibration
setRangeSource(magAdaptor);
addStandbyOverrideSource(magAdaptor);
setIntervalSource(magAdaptor);
}
MagCalibrationChain::~MagCalibrationChain()
{
SensorManager& sm = SensorManager::instance();
sm.releaseDeviceAdaptor("magnetometeradaptor");
disconnectFromSource(magAdaptor, "magnetometer", magReader);
delete magReader;
if (needsCalibration) {
delete magCoordinateAlignFilter_;
delete magCalFilter;
}
delete calibratedMagnetometerData;
delete filterBin;
}
bool MagCalibrationChain::start()
{
if (!magAdaptor) {
sensordLogD() << id() << "No magnetometer adaptor to start.";
return false;
}
if (AbstractSensorChannel::start()) {
sensordLogD() << id() << "Starting MagCalibrationChain";
filterBin->start();
magAdaptor->startSensor();
}
return true;
}
bool MagCalibrationChain::stop()
{
if (!magAdaptor) {
sensordLogD() << id() << "No magnetometer adaptor to stop.";
return false;
}
if (AbstractSensorChannel::stop()) {
sensordLogD() << id() << "Stopping MagCalibrationChain";
magAdaptor->stopSensor();
filterBin->stop();
}
return true;
}
void MagCalibrationChain::resetCalibration()
{
if (needsCalibration) {
CalibrationFilter *filter = static_cast<CalibrationFilter *>(magCalFilter);
if (!filter) {
sensordLogD() << id() << "Can not reset calibration without filter.";
return;
}
filter->dropCalibration();
}
}
bool MagCalibrationChain::setMatrixFromString(const QString& str)
{
QStringList strList = str.split(',');
if (strList.size() != 9) {
sensordLogW() << id() << "Invalid cell count from matrix. Expected 9, got" << strList.size();
return false;
}
for (int i = 0; i < 9; ++i) {
aconv_[i/3][i%3] = strList.at(i).toInt();
}
return true;
}