Support multiple native surfaces on Android.

Support for multiple native surfaces is needed by applications that need
to mix raster windows with GL windows.
Rework the raster and opengl implementation, get rid of eglfs and
fbconvenience dependencies.
Create a single android platform plugin.

[ChangeLog][Android] Rework the raster and opengl implementation.
[ChangeLog][Android] Create a single android platform plugin.

Task-number: QTBUG-34650

Change-Id: I9b1ab51554823329dda8cfbf8fef27c38f917c7b
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>

1 files changed, 724 insertions, 0 deletions

diff --git a/src/plugins/platforms/android/androidjnimain.cpp b/src/plugins/platforms/android/androidjnimain.cpp
new file mode 100644
index 0000000000..ee62c002d8
--- /dev/null
+++ b/src/plugins/platforms/android/androidjnimain.cpp
@@ -0,0 +1,724 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 BogDan Vatra <bogdan@kde.org>
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/private/qguiapplication_p.h>
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <qcoreapplication.h>
+#include <qimage.h>
+#include <qpoint.h>
+#include <qplugin.h>
+#include <qsemaphore.h>
+#include <qmutex.h>
+#include <qdebug.h>
+#include <qglobal.h>
+#include <qobjectdefs.h>
+#include <QtCore/private/qjni_p.h>
+#include <stdlib.h>
+
+#include "androidjnimain.h"
+#include "androidjniaccessibility.h"
+#include "androidjniinput.h"
+#include "androidjniclipboard.h"
+#include "androidjnimenu.h"
+#include "qandroidplatformdialoghelpers.h"
+#include "qandroidplatformintegration.h"
+#include <QtWidgets/QApplication>
+
+#include <qabstracteventdispatcher.h>
+
+#include <android/bitmap.h>
+#include <android/asset_manager_jni.h>
+#include "qandroidassetsfileenginehandler.h"
+#include <android/api-level.h>
+
+#include <qpa/qwindowsysteminterface.h>
+
+Q_IMPORT_PLUGIN(QAndroidPlatformIntegrationPlugin)
+
+static JavaVM *m_javaVM = NULL;
+static jclass m_applicationClass  = NULL;
+static jobject m_classLoaderObject = NULL;
+static jmethodID m_loadClassMethodID = NULL;
+static AAssetManager *m_assetManager = NULL;
+static jobject m_resourcesObj;
+static jobject m_activityObject = NULL;
+static jmethodID m_createSurfaceMethodID = 0;
+static jmethodID m_setSurfaceGeometryMethodID = 0;
+static jmethodID m_destroySurfaceMethodID = 0;
+
+static bool m_activityActive = true; // defaults to true because when the platform plugin is
+                                     // initialized, QtActivity::onResume() has already been called
+
+static jclass m_bitmapClass  = 0;
+static jmethodID m_createBitmapMethodID = 0;
+static jobject m_ARGB_8888_BitmapConfigValue = 0;
+static jobject m_RGB_565_BitmapConfigValue = 0;
+
+jmethodID m_setFullScreenMethodID = 0;
+static bool m_statusBarShowing = true;
+
+static jclass m_bitmapDrawableClass = 0;
+static jmethodID m_bitmapDrawableConstructorMethodID = 0;
+
+extern "C" typedef int (*Main)(int, char **); //use the standard main method to start the application
+static Main m_main = NULL;
+static void *m_mainLibraryHnd = NULL;
+static QList<QByteArray> m_applicationParams;
+
+struct SurfaceData
+{
+    ~SurfaceData() { delete surface; }
+    QJNIObjectPrivate *surface = 0;
+    AndroidSurfaceClient *client = 0;
+};
+
+QHash<int, AndroidSurfaceClient *> m_surfaces;
+
+static QMutex m_surfacesMutex;
+static int m_surfaceId = 1;
+
+static QSemaphore m_quitAppSemaphore;
+static QSemaphore m_pauseApplicationSemaphore;
+static QMutex m_pauseApplicationMutex;
+
+static QAndroidPlatformIntegration *m_androidPlatformIntegration = 0;
+
+static int m_desktopWidthPixels  = 0;
+static int m_desktopHeightPixels = 0;
+static double m_scaledDensity = 0;
+
+static volatile bool m_pauseApplication;
+
+static AndroidAssetsFileEngineHandler *m_androidAssetsFileEngineHandler = 0;
+
+
+
+static const char m_qtTag[] = "Qt";
+static const char m_classErrorMsg[] = "Can't find class \"%s\"";
+static const char m_methodErrorMsg[] = "Can't find method \"%s%s\"";
+
+namespace QtAndroid
+{
+    void setAndroidPlatformIntegration(QAndroidPlatformIntegration *androidPlatformIntegration)
+    {
+        m_surfacesMutex.lock();
+        m_androidPlatformIntegration = androidPlatformIntegration;
+        m_surfacesMutex.unlock();
+    }
+
+    QAndroidPlatformIntegration *androidPlatformIntegration()
+    {
+        QMutexLocker locker(&m_surfacesMutex);
+        return m_androidPlatformIntegration;
+    }
+
+    QWindow *topLevelWindowAt(const QPoint &globalPos)
+    {
+        return m_androidPlatformIntegration
+               ? m_androidPlatformIntegration->screen()->topLevelAt(globalPos)
+               : 0;
+    }
+
+    int desktopWidthPixels()
+    {
+        return m_desktopWidthPixels;
+    }
+
+    int desktopHeightPixels()
+    {
+        return m_desktopHeightPixels;
+    }
+
+    double scaledDensity()
+    {
+        return m_scaledDensity;
+    }
+
+    JavaVM *javaVM()
+    {
+        return m_javaVM;
+    }
+
+    jclass findClass(const QString &className, JNIEnv *env)
+    {
+        return static_cast<jclass>(env->CallObjectMethod(m_classLoaderObject,
+                                                         m_loadClassMethodID,
+                                                         env->NewString(reinterpret_cast<const jchar *>(className.constData()),
+                                                                        jsize(className.length()))));
+    }
+
+    AAssetManager *assetManager()
+    {
+        return m_assetManager;
+    }
+
+    jclass applicationClass()
+    {
+        return m_applicationClass;
+    }
+
+    jobject activity()
+    {
+        return m_activityObject;
+    }
+
+    void showStatusBar()
+    {
+        if (m_statusBarShowing)
+            return;
+
+        QtAndroid::AttachedJNIEnv env;
+        if (env.jniEnv == 0) {
+            qWarning("Failed to get JNI Environment.");
+            return;
+        }
+
+        env.jniEnv->CallStaticVoidMethod(m_applicationClass, m_setFullScreenMethodID, false);
+        m_statusBarShowing = true;
+    }
+
+    void hideStatusBar()
+    {
+        if (!m_statusBarShowing)
+            return;
+
+        QtAndroid::AttachedJNIEnv env;
+        if (env.jniEnv == 0) {
+            qWarning("Failed to get JNI Environment.");
+            return;
+        }
+
+        env.jniEnv->CallStaticVoidMethod(m_applicationClass, m_setFullScreenMethodID, true);
+        m_statusBarShowing = false;
+    }
+
+    void setApplicationActive()
+    {
+        if (m_activityActive)
+            QWindowSystemInterface::handleApplicationStateChanged(Qt::ApplicationActive);
+    }
+
+    jobject createBitmap(QImage img, JNIEnv *env)
+    {
+        if (img.format() != QImage::Format_RGBA8888 && img.format() != QImage::Format_RGB16)
+            img = img.convertToFormat(QImage::Format_RGBA8888);
+
+        jobject bitmap = env->CallStaticObjectMethod(m_bitmapClass,
+                                                     m_createBitmapMethodID,
+                                                     img.width(),
+                                                     img.height(),
+                                                     img.format() == QImage::Format_RGBA8888
+                                                        ? m_ARGB_8888_BitmapConfigValue
+                                                        : m_RGB_565_BitmapConfigValue);
+        if (!bitmap)
+            return 0;
+
+        AndroidBitmapInfo info;
+        if (AndroidBitmap_getInfo(env, bitmap, &info) < 0) {
+            env->DeleteLocalRef(bitmap);
+            return 0;
+        }
+
+        void *pixels;
+        if (AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0) {
+            env->DeleteLocalRef(bitmap);
+            return 0;
+        }
+
+        if (info.stride == uint(img.bytesPerLine())
+                && info.width == uint(img.width())
+                && info.height == uint(img.height())) {
+            memcpy(pixels, img.constBits(), info.stride * info.height);
+        } else {
+            uchar *bmpPtr = static_cast<uchar *>(pixels);
+            const unsigned width = qMin(info.width, (uint)img.width()); //should be the same
+            const unsigned height = qMin(info.height, (uint)img.height()); //should be the same
+            for (unsigned y = 0; y < height; y++, bmpPtr += info.stride)
+                memcpy(bmpPtr, img.constScanLine(y), width);
+        }
+        AndroidBitmap_unlockPixels(env, bitmap);
+        return bitmap;
+    }
+
+    jobject createBitmap(int width, int height, QImage::Format format, JNIEnv *env)
+    {
+        if (format != QImage::Format_RGBA8888
+                && format != QImage::Format_RGB16)
+            return 0;
+
+        return env->CallStaticObjectMethod(m_bitmapClass,
+                                                     m_createBitmapMethodID,
+                                                     width,
+                                                     height,
+                                                     format == QImage::Format_RGB16
+                                                        ? m_RGB_565_BitmapConfigValue
+                                                        : m_ARGB_8888_BitmapConfigValue);
+    }
+
+    jobject createBitmapDrawable(jobject bitmap, JNIEnv *env)
+    {
+        if (!bitmap)
+            return 0;
+
+        return env->NewObject(m_bitmapDrawableClass,
+                              m_bitmapDrawableConstructorMethodID,
+                              m_resourcesObj,
+                              bitmap);
+    }
+
+    const char *classErrorMsgFmt()
+    {
+        return m_classErrorMsg;
+    }
+
+    const char *methodErrorMsgFmt()
+    {
+        return m_methodErrorMsg;
+    }
+
+    const char *qtTagText()
+    {
+        return m_qtTag;
+    }
+
+    int createSurface(AndroidSurfaceClient *client, const QRect &geometry, bool onTop)
+    {
+        QJNIEnvironmentPrivate env;
+        if (!env)
+            return 0;
+
+        m_surfacesMutex.lock();
+        int surfaceId = m_surfaceId++;
+        m_surfaces[surfaceId] = client;
+        m_surfacesMutex.unlock();
+
+        jint x = 0, y = 0, w = -1, h = -1;
+        if (!geometry.isNull()) {
+            x = geometry.x();
+            y = geometry.y();
+            w = std::max(geometry.width(), 1);
+            h = std::max(geometry.height(), 1);
+        }
+        env->CallStaticVoidMethod(m_applicationClass,
+                                     m_createSurfaceMethodID,
+                                     surfaceId,
+                                     jboolean(onTop),
+                                     x, y, w, h);
+        return surfaceId;
+    }
+
+    void setSurfaceGeometry(int surfaceId, const QRect &geometry)
+    {
+        QJNIEnvironmentPrivate env;
+        if (!env)
+            return;
+        jint x = 0, y = 0, w = -1, h = -1;
+        if (!geometry.isNull()) {
+            x = geometry.x();
+            y = geometry.y();
+            w = geometry.width();
+            h = geometry.height();
+        }
+        env->CallStaticVoidMethod(m_applicationClass,
+                                     m_setSurfaceGeometryMethodID,
+                                     surfaceId,
+                                     x, y, w, h);
+    }
+
+    void destroySurface(int surfaceId)
+    {
+        QMutexLocker lock(&m_surfacesMutex);
+        const auto &it = m_surfaces.find(surfaceId);
+        if (it == m_surfaces.end())
+            return;
+
+        m_surfaces.remove(surfaceId);
+        QJNIEnvironmentPrivate env;
+        if (!env)
+            return;
+
+        env->CallStaticVoidMethod(m_applicationClass,
+                                     m_destroySurfaceMethodID,
+                                     surfaceId);
+    }
+}
+
+static jboolean startQtAndroidPlugin(JNIEnv* /*env*/, jobject /*object*//*, jobject applicationAssetManager*/)
+{
+    m_androidPlatformIntegration = 0;
+    m_androidAssetsFileEngineHandler = new AndroidAssetsFileEngineHandler();
+    return true;
+}
+
+static void *startMainMethod(void */*data*/)
+{
+    QVarLengthArray<const char *> params(m_applicationParams.size());
+    for (int i = 0; i < m_applicationParams.size(); i++)
+        params[i] = static_cast<const char *>(m_applicationParams[i].constData());
+
+    int ret = m_main(m_applicationParams.length(), const_cast<char **>(params.data()));
+    Q_UNUSED(ret);
+
+    if (m_mainLibraryHnd) {
+        int res = dlclose(m_mainLibraryHnd);
+        if (res < 0)
+            qWarning() << "dlclose failed:" << dlerror();
+    }
+
+    QtAndroid::AttachedJNIEnv env;
+    if (!env.jniEnv)
+        return 0;
+
+    if (m_applicationClass) {
+        jmethodID quitApp = env.jniEnv->GetStaticMethodID(m_applicationClass, "quitApp", "()V");
+        env.jniEnv->CallStaticVoidMethod(m_applicationClass, quitApp);
+    }
+
+    return 0;
+}
+
+static jboolean startQtApplication(JNIEnv *env, jobject /*object*/, jstring paramsString, jstring environmentString)
+{
+    m_mainLibraryHnd = NULL;
+    const char *nativeString = env->GetStringUTFChars(environmentString, 0);
+    QByteArray string = nativeString;
+    env->ReleaseStringUTFChars(environmentString, nativeString);
+    m_applicationParams=string.split('\t');
+    foreach (string, m_applicationParams) {
+        if (!string.isEmpty() && putenv(string.constData()))
+            qWarning() << "Can't set environment" << string;
+    }
+
+    nativeString = env->GetStringUTFChars(paramsString, 0);
+    string = nativeString;
+    env->ReleaseStringUTFChars(paramsString, nativeString);
+
+    m_applicationParams=string.split('\t');
+
+    // Go home
+    QDir::setCurrent(QDir::homePath());
+
+    //look for main()
+    if (m_applicationParams.length()) {
+        // Obtain a handle to the main library (the library that contains the main() function).
+        // This library should already be loaded, and calling dlopen() will just return a reference to it.
+        m_mainLibraryHnd = dlopen(m_applicationParams.first().data(), 0);
+        if (m_mainLibraryHnd == NULL) {
+            qCritical() << "dlopen failed:" << dlerror();
+            return false;
+        }
+        m_main = (Main)dlsym(m_mainLibraryHnd, "main");
+    } else {
+        qWarning() << "No main library was specified; searching entire process (this is slow!)";
+        m_main = (Main)dlsym(RTLD_DEFAULT, "main");
+    }
+
+    if (!m_main) {
+        qCritical() << "dlsym failed:" << dlerror();
+        qCritical() << "Could not find main method";
+        return false;
+    }
+
+    pthread_t appThread;
+    return pthread_create(&appThread, NULL, startMainMethod, NULL) == 0;
+}
+
+
+static void quitQtAndroidPlugin(JNIEnv *env, jclass /*clazz*/)
+{
+    Q_UNUSED(env);
+    m_androidPlatformIntegration = 0;
+    delete m_androidAssetsFileEngineHandler;
+}
+
+static void terminateQt(JNIEnv *env, jclass /*clazz*/)
+{
+    env->DeleteGlobalRef(m_applicationClass);
+    env->DeleteGlobalRef(m_classLoaderObject);
+    env->DeleteGlobalRef(m_resourcesObj);
+    env->DeleteGlobalRef(m_activityObject);
+    env->DeleteGlobalRef(m_bitmapClass);
+    env->DeleteGlobalRef(m_ARGB_8888_BitmapConfigValue);
+    env->DeleteGlobalRef(m_RGB_565_BitmapConfigValue);
+    env->DeleteGlobalRef(m_bitmapDrawableClass);
+    m_androidPlatformIntegration = 0;
+    delete m_androidAssetsFileEngineHandler;
+}
+
+static void setSurface(JNIEnv *env, jobject /*thiz*/, jint id, jobject jSurface, jint w, jint h)
+{
+    QMutexLocker lock(&m_surfacesMutex);
+    const auto &it = m_surfaces.find(id);
+    if (it == m_surfaces.end()) {
+        qWarning()<<"Can't find surface" << id;
+        return;
+    }
+    it.value()->surfaceChanged(env, jSurface, w, h);
+}
+
+static void setDisplayMetrics(JNIEnv */*env*/, jclass /*clazz*/,
+                            jint /*widthPixels*/, jint /*heightPixels*/,
+                            jint desktopWidthPixels, jint desktopHeightPixels,
+                            jdouble xdpi, jdouble ydpi, jdouble scaledDensity)
+{
+    m_desktopWidthPixels = desktopWidthPixels;
+    m_desktopHeightPixels = desktopHeightPixels;
+    m_scaledDensity = scaledDensity;
+
+    if (!m_androidPlatformIntegration) {
+        QAndroidPlatformIntegration::setDefaultDisplayMetrics(desktopWidthPixels,desktopHeightPixels,
+                                                                qRound(double(desktopWidthPixels)  / xdpi * 25.4),
+                                                                qRound(double(desktopHeightPixels) / ydpi * 25.4));
+    } else {
+        m_androidPlatformIntegration->setDisplayMetrics(qRound(double(desktopWidthPixels)  / xdpi * 25.4),
+                                                        qRound(double(desktopHeightPixels) / ydpi * 25.4));
+        m_androidPlatformIntegration->setDesktopSize(desktopWidthPixels, desktopHeightPixels);
+    }
+}
+
+static void updateWindow(JNIEnv */*env*/, jobject /*thiz*/)
+{
+    if (!m_androidPlatformIntegration)
+        return;
+
+    if (QGuiApplication::instance() != 0) {
+        foreach (QWindow *w, QGuiApplication::topLevelWindows())
+            QWindowSystemInterface::handleExposeEvent(w, QRegion(w->geometry()));
+    }
+
+    QAndroidPlatformScreen *screen = static_cast<QAndroidPlatformScreen *>(m_androidPlatformIntegration->screen());
+    QMetaObject::invokeMethod(screen, "setDirty", Qt::QueuedConnection, Q_ARG(QRect,screen->geometry()));
+}
+
+static void updateApplicationState(JNIEnv */*env*/, jobject /*thiz*/, jint state)
+{
+    m_activityActive = (state == Qt::ApplicationActive);
+
+    if (!m_androidPlatformIntegration || !QGuiApplicationPrivate::platformIntegration())
+        return;
+
+    QWindowSystemInterface::handleApplicationStateChanged(Qt::ApplicationState(state));
+}
+
+static void handleOrientationChanged(JNIEnv */*env*/, jobject /*thiz*/, jint newRotation, jint nativeOrientation)
+{
+    // Array of orientations rotated in 90 degree increments, counterclockwise
+    // (same direction as Android measures angles)
+    static const Qt::ScreenOrientation orientations[] = {
+        Qt::PortraitOrientation,
+        Qt::LandscapeOrientation,
+        Qt::InvertedPortraitOrientation,
+        Qt::InvertedLandscapeOrientation
+    };
+
+    // The Android API defines the following constants:
+    // ROTATION_0 :   0
+    // ROTATION_90 :  1
+    // ROTATION_180 : 2
+    // ROTATION_270 : 3
+    // ORIENTATION_PORTRAIT :  1
+    // ORIENTATION_LANDSCAPE : 2
+
+    // and newRotation is how much the current orientation is rotated relative to nativeOrientation
+
+    // which means that we can be really clever here :)
+    Qt::ScreenOrientation screenOrientation = orientations[(nativeOrientation - 1 + newRotation) % 4];
+    Qt::ScreenOrientation native = orientations[nativeOrientation - 1];
+
+    QAndroidPlatformIntegration::setScreenOrientation(screenOrientation, native);
+    if (m_androidPlatformIntegration) {
+        QPlatformScreen *screen = m_androidPlatformIntegration->screen();
+        QWindowSystemInterface::handleScreenOrientationChange(screen->screen(),
+                                                              screenOrientation);
+    }
+}
+
+static JNINativeMethod methods[] = {
+    {"startQtAndroidPlugin", "()Z", (void *)startQtAndroidPlugin},
+    {"startQtApplication", "(Ljava/lang/String;Ljava/lang/String;)V", (void *)startQtApplication},
+    {"quitQtAndroidPlugin", "()V", (void *)quitQtAndroidPlugin},
+    {"terminateQt", "()V", (void *)terminateQt},
+    {"setDisplayMetrics", "(IIIIDDD)V", (void *)setDisplayMetrics},
+    {"setSurface", "(ILjava/lang/Object;II)V", (void *)setSurface},
+    {"updateWindow", "()V", (void *)updateWindow},
+    {"updateApplicationState", "(I)V", (void *)updateApplicationState},
+    {"handleOrientationChanged", "(II)V", (void *)handleOrientationChanged}
+};
+
+#define FIND_AND_CHECK_CLASS(CLASS_NAME) \
+clazz = env->FindClass(CLASS_NAME); \
+if (!clazz) { \
+    __android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_classErrorMsg, CLASS_NAME); \
+    return JNI_FALSE; \
+}
+
+#define GET_AND_CHECK_METHOD(VAR, CLASS, METHOD_NAME, METHOD_SIGNATURE) \
+VAR = env->GetMethodID(CLASS, METHOD_NAME, METHOD_SIGNATURE); \
+if (!VAR) { \
+    __android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_methodErrorMsg, METHOD_NAME, METHOD_SIGNATURE); \
+    return JNI_FALSE; \
+}
+
+#define GET_AND_CHECK_STATIC_METHOD(VAR, CLASS, METHOD_NAME, METHOD_SIGNATURE) \
+VAR = env->GetStaticMethodID(CLASS, METHOD_NAME, METHOD_SIGNATURE); \
+if (!VAR) { \
+    __android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_methodErrorMsg, METHOD_NAME, METHOD_SIGNATURE); \
+    return JNI_FALSE; \
+}
+
+#define GET_AND_CHECK_FIELD(VAR, CLASS, FIELD_NAME, FIELD_SIGNATURE) \
+VAR = env->GetFieldID(CLASS, FIELD_NAME, FIELD_SIGNATURE); \
+if (!VAR) { \
+    __android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_methodErrorMsg, FIELD_NAME, FIELD_SIGNATURE); \
+    return JNI_FALSE; \
+}
+
+#define GET_AND_CHECK_STATIC_FIELD(VAR, CLASS, FIELD_NAME, FIELD_SIGNATURE) \
+VAR = env->GetStaticFieldID(CLASS, FIELD_NAME, FIELD_SIGNATURE); \
+if (!VAR) { \
+    __android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_methodErrorMsg, FIELD_NAME, FIELD_SIGNATURE); \
+    return JNI_FALSE; \
+}
+
+static int registerNatives(JNIEnv *env)
+{
+    jclass clazz;
+    FIND_AND_CHECK_CLASS("org/qtproject/qt5/android/QtNative");
+    m_applicationClass = static_cast<jclass>(env->NewGlobalRef(clazz));
+    GET_AND_CHECK_STATIC_METHOD(m_setFullScreenMethodID, m_applicationClass, "setFullScreen", "(Z)V");
+
+    if (env->RegisterNatives(m_applicationClass, methods, sizeof(methods) / sizeof(methods[0])) < 0) {
+        __android_log_print(ANDROID_LOG_FATAL,"Qt", "RegisterNatives failed");
+        return JNI_FALSE;
+    }
+
+    GET_AND_CHECK_STATIC_METHOD(m_createSurfaceMethodID, m_applicationClass, "createSurface", "(IZIIII)V");
+    GET_AND_CHECK_STATIC_METHOD(m_setSurfaceGeometryMethodID, m_applicationClass, "setSurfaceGeometry", "(IIIII)V");
+    GET_AND_CHECK_STATIC_METHOD(m_destroySurfaceMethodID, m_applicationClass, "destroySurface", "(I)V");
+
+    jmethodID methodID;
+    GET_AND_CHECK_STATIC_METHOD(methodID, m_applicationClass, "activity", "()Landroid/app/Activity;");
+    jobject activityObject = env->CallStaticObjectMethod(m_applicationClass, methodID);
+    m_activityObject = env->NewGlobalRef(activityObject);
+    GET_AND_CHECK_STATIC_METHOD(methodID, m_applicationClass, "classLoader", "()Ljava/lang/ClassLoader;");
+    m_classLoaderObject = env->NewGlobalRef(env->CallStaticObjectMethod(m_applicationClass, methodID));
+
+    clazz = env->GetObjectClass(m_classLoaderObject);
+    GET_AND_CHECK_METHOD(m_loadClassMethodID, clazz, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;");
+
+    FIND_AND_CHECK_CLASS("android/content/ContextWrapper");
+    GET_AND_CHECK_METHOD(methodID, clazz, "getAssets", "()Landroid/content/res/AssetManager;");
+    m_assetManager = AAssetManager_fromJava(env, env->CallObjectMethod(activityObject, methodID));
+
+    GET_AND_CHECK_METHOD(methodID, clazz, "getResources", "()Landroid/content/res/Resources;");
+    m_resourcesObj = env->NewGlobalRef(env->CallObjectMethod(activityObject, methodID));
+
+    FIND_AND_CHECK_CLASS("android/graphics/Bitmap");
+    m_bitmapClass = static_cast<jclass>(env->NewGlobalRef(clazz));
+    GET_AND_CHECK_STATIC_METHOD(m_createBitmapMethodID, m_bitmapClass
+                                , "createBitmap", "(IILandroid/graphics/Bitmap$Config;)Landroid/graphics/Bitmap;");
+
+    FIND_AND_CHECK_CLASS("android/graphics/Bitmap$Config");
+    jfieldID fieldId;
+    GET_AND_CHECK_STATIC_FIELD(fieldId, clazz, "ARGB_8888", "Landroid/graphics/Bitmap$Config;");
+    m_ARGB_8888_BitmapConfigValue = env->NewGlobalRef(env->GetStaticObjectField(clazz, fieldId));
+    GET_AND_CHECK_STATIC_FIELD(fieldId, clazz, "RGB_565", "Landroid/graphics/Bitmap$Config;");
+    m_RGB_565_BitmapConfigValue = env->NewGlobalRef(env->GetStaticObjectField(clazz, fieldId));
+
+    FIND_AND_CHECK_CLASS("android/graphics/drawable/BitmapDrawable");
+    m_bitmapDrawableClass = static_cast<jclass>(env->NewGlobalRef(clazz));
+    GET_AND_CHECK_METHOD(m_bitmapDrawableConstructorMethodID,
+                         m_bitmapDrawableClass,
+                         "<init>",
+                         "(Landroid/content/res/Resources;Landroid/graphics/Bitmap;)V");
+
+    return JNI_TRUE;
+}
+
+jint androidApiLevel(JNIEnv *env)
+{
+    jclass clazz;
+    FIND_AND_CHECK_CLASS("android/os/Build$VERSION");
+    jfieldID fieldId;
+    GET_AND_CHECK_STATIC_FIELD(fieldId, clazz, "SDK_INT", "I");
+    return env->GetStaticIntField(clazz, fieldId);
+}
+
+Q_DECL_EXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void */*reserved*/)
+{
+    typedef union {
+        JNIEnv *nativeEnvironment;
+        void *venv;
+    } UnionJNIEnvToVoid;
+
+    __android_log_print(ANDROID_LOG_INFO, "Qt", "qt start");
+    UnionJNIEnvToVoid uenv;
+    uenv.venv = NULL;
+    m_javaVM = 0;
+
+    if (vm->GetEnv(&uenv.venv, JNI_VERSION_1_4) != JNI_OK) {
+        __android_log_print(ANDROID_LOG_FATAL, "Qt", "GetEnv failed");
+        return -1;
+    }
+
+    JNIEnv *env = uenv.nativeEnvironment;
+    if (!registerNatives(env)
+            || !QtAndroidInput::registerNatives(env)
+            || !QtAndroidClipboard::registerNatives(env)
+            || !QtAndroidMenu::registerNatives(env)
+            || !QtAndroidAccessibility::registerNatives(env)
+            || !QtAndroidDialogHelpers::registerNatives(env)) {
+        __android_log_print(ANDROID_LOG_FATAL, "Qt", "registerNatives failed");
+        return -1;
+    }
+
+    jint apiLevel = androidApiLevel(env);
+    if (apiLevel >= 16 && !QtAndroidAccessibility::registerNatives(env)) {
+        __android_log_print(ANDROID_LOG_FATAL, "Qt A11y", "registerNatives failed");
+        return -1;
+    }
+
+    m_javaVM = vm;
+    return JNI_VERSION_1_4;
+}