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, 86 deletions

diff --git a/src/plugins/sensors/android/src/androidcommonsensor.h b/src/plugins/sensors/android/src/androidcommonsensor.h
deleted file mode 100644
index bfd36db0..00000000
--- a/src/plugins/sensors/android/src/androidcommonsensor.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 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.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef ANDROIDCOMMONSENSOR_H
-#define ANDROIDCOMMONSENSOR_H
-
-#include <qsensorbackend.h>
-#include <qsensor.h>
-#include "androidjnisensors.h"
-
-template <typename ReaderType>
-class AndroidCommonSensor : public QSensorBackend, protected AndroidSensors::AndroidSensorsListenerInterface
-{
-public:
-    AndroidCommonSensor(AndroidSensors::AndroidSensorType type, QSensor *sensor) : QSensorBackend(sensor)
-    {
-        setDescription(AndroidSensors::sensorDescription(type));
-        setReading<ReaderType>(&m_reader);
-        m_type = type;
-        m_isStarted = false;
-    }
-
-    virtual ~AndroidCommonSensor()
-    {
-        if (m_isStarted)
-            stop();
-    }
-    void start() override
-    {
-        if (AndroidSensors::registerListener(m_type, this, sensor()->dataRate()))
-            m_isStarted = true;
-    }
-
-    void stop() override
-    {
-        if (m_isStarted) {
-            m_isStarted = false;
-            AndroidSensors::unregisterListener(m_type, this);
-        }
-    }
-
-protected:
-    ReaderType m_reader;
-    AndroidSensors::AndroidSensorType m_type;
-
-private:
-    bool m_isStarted;
-};
-
-#endif // ANDROIDCOMMONSENSOR_H