Say hello to Qt Android Sensors based on NDK API

Until Qt 5.9, we had to use JNI way because the NDK sensors API was
introduced in API-16. Starting with Qt 5.9 we can safely use the NDK API
as API_16 is the minimum API supported by Qt.
Using the NDK API instead of JNI boost the performance a lot! The CPU
usage dropped 2 to 4 times, from over 60% using the JNI to less than
20%.

[ChangeLog][Android] Rewrite Qt Android Sensors using NDK
API.

Change-Id: If3e3f1e56973e2a189662912b2a6ebfbd71dee14
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>

1 files changed, 0 insertions, 64 deletions

diff --git a/src/plugins/sensors/android/src/androidtemperature.cpp b/src/plugins/sensors/android/src/androidtemperature.cpp
deleted file mode 100644
index 3a9e1f51..00000000
--- a/src/plugins/sensors/android/src/androidtemperature.cpp
+++ /dev/null
@@ -1,64 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 BogDan Vatra <bogdan@kde.org>
-** Copyright (C) 2016 The Qt Company Ltd.
-** 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 "androidtemperature.h"
-
-AndroidTemperature::AndroidTemperature(AndroidSensors::AndroidSensorType type, QSensor *sensor)
-    : AndroidCommonSensor<QAmbientTemperatureReading>(type, sensor)
-{}
-
-
-void AndroidTemperature::onAccuracyChanged(jint accuracy)
-{
-    Q_UNUSED(accuracy)
-}
-
-void AndroidTemperature::onSensorChanged(jlong timestamp, const jfloat *values, uint size)
-{
-    if (size < 1)
-        return;
-    m_reader.setTimestamp(timestamp/1000);
-
-    // TODO: I was unable to test this since the devices I was testing this with did not have
-    //       a temperature sensor. Verify that this works and check that the units are correct.
-
-    m_reader.setTemperature(values[0]);
-    newReadingAvailable();
-}