1 files changed, 67 insertions, 0 deletions
diff --git a/src/plugins/sensors/android/androidmagnetometer.cpp b/src/plugins/sensors/android/androidmagnetometer.cpp
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+++ b/src/plugins/sensors/android/androidmagnetometer.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2019 BogDan Vatra <bogdan@kde.org>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "androidmagnetometer.h"
+
+AndroidMagnetometer::AndroidMagnetometer(int type, QSensor *sensor, QObject *parent)
+    : SensorEventQueue<QMagnetometerReading>(type, sensor, parent)
+{}
+
+void AndroidMagnetometer::dataReceived(const ASensorEvent &event)
+{
+    const auto &mag = event.magnetic;
+    qreal accuracy = mag.status == ASENSOR_STATUS_NO_CONTACT ? 0 : mag.status / 3.0;
+    // check https://developer.android.com/reference/android/hardware/SensorEvent.html#sensor.type_magnetic_field:
+    // Android uses micro-Tesla, Qt uses Tesla
+    qreal x = qreal(mag.x) / 1e6;
+    qreal y = qreal(mag.y) / 1e6;
+    qreal z = qreal(mag.z) / 1e6;
+    if (sensor()->skipDuplicates() && qFuzzyCompare(accuracy, m_reader.calibrationLevel()) &&
+            qFuzzyCompare(x, m_reader.x()) &&
+            qFuzzyCompare(y, m_reader.y()) &&
+            qFuzzyCompare(z, m_reader.z())) {
+        return;
+    }
+    m_reader.setCalibrationLevel(accuracy);
+    m_reader.setTimestamp(uint64_t(event.timestamp / 1000));
+    m_reader.setX(x);
+    m_reader.setY(y);
+    m_reader.setZ(z);
+    newReadingAvailable();
+}