Wire up SDL on Android

BUG=skia:

Review URL: https://codereview.chromium.org/1415453009

8 files changed, 1904 insertions, 3 deletions

diff --git a/platform_tools/android/apps/settings.gradle b/platform_tools/android/apps/settings.gradle
index 787bcf06cc..f8872ca309 100644
--- a/platform_tools/android/apps/settings.gradle
+++ b/platform_tools/android/apps/settings.gradle
@@ -1,3 +1,4 @@
 include ':sample_app'
 include ':visualbench'
+include ':visualbenchsdl'
 include ':canvasproof'
diff --git a/platform_tools/android/apps/visualbenchsdl/build.gradle b/platform_tools/android/apps/visualbenchsdl/build.gradle
new file mode 100644
index 0000000000..a7b78fb235
--- /dev/null
+++ b/platform_tools/android/apps/visualbenchsdl/build.gradle
@@ -0,0 +1,47 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "22.0.1"
+
+    defaultConfig {
+        applicationId "com.skia.visualbench"
+        minSdkVersion 19
+        signingConfig signingConfigs.debug
+        targetSdkVersion 19
+        versionCode 1
+        versionName "1.0"
+    }
+
+    sourceSets.main.jni.srcDirs = [] //disable automatic ndk-build call
+    sourceSets.main.jniLibs.srcDir "src/main/libs"
+
+    productFlavors {
+        arm {}
+        arm64 {}
+        x86 {}
+        x86_64 {}
+        mips {}
+        mips64 {}
+    }
+
+    // make sure that app is built and shared libraries are copied to correct directories
+    applicationVariants.all{ variant ->
+
+        def buildNativeLib = task("${variant.name}_NativeLib", type:Exec) {
+            workingDir '../../../..' // top-level skia directory
+            commandLine constructBuildCommand(variant, "CopyVisualBenchDeps").split()
+            environment PATH: getPathWithDepotTools()
+            environment ANDROID_SDK_ROOT: getSDKPath()
+        }
+
+        buildNativeLib.onlyIf { !project.hasProperty("suppressNativeBuild") }
+
+        TaskCollection<Task> assembleTask
+        assembleTask = project.tasks.matching {
+            it.name.contains("assemble") &&
+                    it.name.toLowerCase().endsWith(variant.name.toLowerCase())
+        }
+        assembleTask.getAt(0).dependsOn buildNativeLib
+    }
+}
diff --git a/platform_tools/android/apps/visualbenchsdl/src/main/AndroidManifest.xml b/platform_tools/android/apps/visualbenchsdl/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000..2bb9ecaa38
--- /dev/null
+++ b/platform_tools/android/apps/visualbenchsdl/src/main/AndroidManifest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- BEGIN_INCLUDE(manifest) -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.skia"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <!-- This is the platform API where NativeActivity was introduced. -->
+    <uses-sdk android:minSdkVersion="19" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.ACCESS_ALL_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
+    <application android:label="VisualBenchActivity">
+        <activity android:name=".VisualBenchActivity"
+                  android:label="VisualBenchActivity"
+                  android:configChanges="orientation|keyboardHidden"
+                  android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
+            <meta-data android:name="android.app.lib_name"
+                       android:value="visualbench" />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest> 
+<!-- END_INCLUDE(manifest) -->
diff --git a/platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchActivity.java b/platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchActivity.java
new file mode 100644
index 0000000000..a7e83ffdb5
--- /dev/null
+++ b/platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchActivity.java
@@ -0,0 +1,14 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+package com.skia;
+
+import org.libsdl.app.SDLActivity;
+
+public class VisualBenchActivity extends SDLActivity {
+  // TODO wire up command line arguments
+}
diff --git a/platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchTestActivity.java b/platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchTestActivity.java
new file mode 100644
index 0000000000..48507bea68
--- /dev/null
+++ b/platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchTestActivity.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+package com.skia;
+
+import android.app.Instrumentation;
+import android.content.Intent;
+import android.test.ActivityUnitTestCase;
+import android.util.Log;
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.lang.StringBuilder;
+
+public class VisualBenchTestActivity extends ActivityUnitTestCase<VisualBenchActivity> {
+    private VisualBenchActivity mActivity;
+    private Instrumentation mInstrumentation;
+
+    public VisualBenchTestActivity() {
+        super(VisualBenchActivity.class);
+    }
+
+    protected void setUp() throws Exception {
+        super.setUp();
+        mInstrumentation = getInstrumentation();
+    }
+
+    private String getFlags() throws IOException {
+        InputStream s = getInstrumentation().getTargetContext().getResources().getAssets().open("nanobench_flags.txt");
+        BufferedReader r = new BufferedReader(new InputStreamReader(s));
+        StringBuilder flags = new StringBuilder();
+        String sep = System.getProperty("line.separator");
+        String line;
+        while ((line = r.readLine()) != null) {
+            flags.append(line);
+            flags.append(sep);
+        }
+        s.close();
+        return flags.toString();
+    }
+
+    public void testVisualBench() throws InterruptedException, IOException {
+        String pkg = getInstrumentation().getTargetContext().getPackageName();
+        Intent intent = new Intent(getInstrumentation().getTargetContext(),
+                                   VisualBenchActivity.class);
+        String args = getFlags();
+        intent.putExtra("cmdLineFlags", args);
+        mActivity = launchActivityWithIntent(pkg, VisualBenchActivity.class, intent);
+
+        assertNotNull("mActivity is null", mActivity);
+        Thread.sleep(5000);
+        while (!mActivity.isDestroyed()) {
+            Log.d("skiatest", "Waiting for subprocess to finish.");
+            Thread.sleep(1000);
+        }
+    }
+}
diff --git a/platform_tools/android/apps/visualbenchsdl/src/main/java/org/libsdl/app/SDLActivity.java b/platform_tools/android/apps/visualbenchsdl/src/main/java/org/libsdl/app/SDLActivity.java
new file mode 100644
index 0000000000..5c5171bc58
--- /dev/null
+++ b/platform_tools/android/apps/visualbenchsdl/src/main/java/org/libsdl/app/SDLActivity.java
@@ -0,0 +1,1684 @@
+/*
+ * SDL License
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ * 
+ */
+
+// This file comes from SDL, but it has been modified to pull Skia's libraries
+
+package org.libsdl.app;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.lang.reflect.Method;
+
+import android.app.*;
+import android.content.*;
+import android.text.InputType;
+import android.view.*;
+import android.view.inputmethod.BaseInputConnection;
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.AbsoluteLayout;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.os.*;
+import android.util.Log;
+import android.util.SparseArray;
+import android.graphics.*;
+import android.graphics.drawable.Drawable;
+import android.media.*;
+import android.hardware.*;
+import android.content.pm.ActivityInfo;
+
+/**
+    SDL Activity
+*/
+public class SDLActivity extends Activity {
+    private static final String TAG = "SDL";
+
+    // Keep track of the paused state
+    public static boolean mIsPaused, mIsSurfaceReady, mHasFocus;
+    public static boolean mExitCalledFromJava;
+
+    /** If shared libraries (e.g. SDL or the native application) could not be loaded. */
+    public static boolean mBrokenLibraries;
+
+    // If we want to separate mouse and touch events.
+    //  This is only toggled in native code when a hint is set!
+    public static boolean mSeparateMouseAndTouch;
+
+    // Main components
+    protected static SDLActivity mSingleton;
+    protected static SDLSurface mSurface;
+    protected static View mTextEdit;
+    protected static ViewGroup mLayout;
+    protected static SDLJoystickHandler mJoystickHandler;
+
+    // This is what SDL runs in. It invokes SDL_main(), eventually
+    protected static Thread mSDLThread;
+
+    // Audio
+    protected static AudioTrack mAudioTrack;
+
+    /**
+     * This method is called by SDL before loading the native shared libraries.
+     * It can be overridden to provide names of shared libraries to be loaded.
+     * The default implementation returns the defaults. It never returns null.
+     * An array returned by a new implementation must at least contain "SDL2".
+     * Also keep in mind that the order the libraries are loaded may matter.
+     * @return names of shared libraries to be loaded (e.g. "SDL2", "main").
+     */
+    protected String[] getLibraries() {
+        return new String[] {
+            //"SDL2",
+            // "SDL2_image",
+            // "SDL2_mixer",
+            // "SDL2_net",
+            // "SDL2_ttf",
+            "skia_android",
+            "visualbench"
+        };
+    }
+
+    // Load the .so
+    public void loadLibraries() {
+       for (String lib : getLibraries()) {
+          System.loadLibrary(lib);
+       }
+    }
+
+    /**
+     * This method is called by SDL before starting the native application thread.
+     * It can be overridden to provide the arguments after the application name.
+     * The default implementation returns an empty array. It never returns null.
+     * @return arguments for the native application.
+     */
+    protected String[] getArguments() {
+        return new String[0];
+    }
+
+    public static void initialize() {
+        // The static nature of the singleton and Android quirkyness force us to initialize everything here
+        // Otherwise, when exiting the app and returning to it, these variables *keep* their pre exit values
+        mSingleton = null;
+        mSurface = null;
+        mTextEdit = null;
+        mLayout = null;
+        mJoystickHandler = null;
+        mSDLThread = null;
+        mAudioTrack = null;
+        mExitCalledFromJava = false;
+        mBrokenLibraries = false;
+        mIsPaused = false;
+        mIsSurfaceReady = false;
+        mHasFocus = true;
+    }
+
+    // Setup
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        Log.v(TAG, "Device: " + android.os.Build.DEVICE);
+        Log.v(TAG, "Model: " + android.os.Build.MODEL);
+        Log.v(TAG, "onCreate(): " + mSingleton);
+        super.onCreate(savedInstanceState);
+
+        SDLActivity.initialize();
+        // So we can call stuff from static callbacks
+        mSingleton = this;
+
+        // Load shared libraries
+        String errorMsgBrokenLib = "";
+        try {
+            loadLibraries();
+        } catch(UnsatisfiedLinkError e) {
+            System.err.println(e.getMessage());
+            mBrokenLibraries = true;
+            errorMsgBrokenLib = e.getMessage();
+        } catch(Exception e) {
+            System.err.println(e.getMessage());
+            mBrokenLibraries = true;
+            errorMsgBrokenLib = e.getMessage();
+        }
+
+        if (mBrokenLibraries)
+        {
+            AlertDialog.Builder dlgAlert  = new AlertDialog.Builder(this);
+            dlgAlert.setMessage("An error occurred while trying to start the application. Please try again and/or reinstall."
+                  + System.getProperty("line.separator")
+                  + System.getProperty("line.separator")
+                  + "Error: " + errorMsgBrokenLib);
+            dlgAlert.setTitle("SDL Error");
+            dlgAlert.setPositiveButton("Exit",
+                new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog,int id) {
+                        // if this button is clicked, close current activity
+                        SDLActivity.mSingleton.finish();
+                    }
+                });
+           dlgAlert.setCancelable(false);
+           dlgAlert.create().show();
+
+           return;
+        }
+
+        // Set up the surface
+        mSurface = new SDLSurface(getApplication());
+
+        if(Build.VERSION.SDK_INT >= 12) {
+            mJoystickHandler = new SDLJoystickHandler_API12();
+        }
+        else {
+            mJoystickHandler = new SDLJoystickHandler();
+        }
+
+        mLayout = new AbsoluteLayout(this);
+        mLayout.addView(mSurface);
+
+        setContentView(mLayout);
+        
+        // Get filename from "Open with" of another application
+        Intent intent = getIntent();
+
+        if (intent != null && intent.getData() != null) {
+            String filename = intent.getData().getPath();
+            if (filename != null) {
+                Log.v(TAG, "Got filename: " + filename);
+                SDLActivity.onNativeDropFile(filename);
+            }
+        }
+    }
+
+    // Events
+    @Override
+    protected void onPause() {
+        Log.v(TAG, "onPause()");
+        super.onPause();
+
+        if (SDLActivity.mBrokenLibraries) {
+           return;
+        }
+
+        SDLActivity.handlePause();
+    }
+
+    @Override
+    protected void onResume() {
+        Log.v(TAG, "onResume()");
+        super.onResume();
+
+        if (SDLActivity.mBrokenLibraries) {
+           return;
+        }
+
+        SDLActivity.handleResume();
+    }
+
+
+    @Override
+    public void onWindowFocusChanged(boolean hasFocus) {
+        super.onWindowFocusChanged(hasFocus);
+        Log.v(TAG, "onWindowFocusChanged(): " + hasFocus);
+
+        if (SDLActivity.mBrokenLibraries) {
+           return;
+        }
+
+        SDLActivity.mHasFocus = hasFocus;
+        if (hasFocus) {
+            SDLActivity.handleResume();
+        }
+    }
+
+    @Override
+    public void onLowMemory() {
+        Log.v(TAG, "onLowMemory()");
+        super.onLowMemory();
+
+        if (SDLActivity.mBrokenLibraries) {
+           return;
+        }
+
+        SDLActivity.nativeLowMemory();
+    }
+
+    @Override
+    protected void onDestroy() {
+        Log.v(TAG, "onDestroy()");
+
+        if (SDLActivity.mBrokenLibraries) {
+           super.onDestroy();
+           // Reset everything in case the user re opens the app
+           SDLActivity.initialize();
+           return;
+        }
+
+        // Send a quit message to the application
+        SDLActivity.mExitCalledFromJava = true;
+        SDLActivity.nativeQuit();
+
+        // Now wait for the SDL thread to quit
+        if (SDLActivity.mSDLThread != null) {
+            try {
+                SDLActivity.mSDLThread.join();
+            } catch(Exception e) {
+                Log.v(TAG, "Problem stopping thread: " + e);
+            }
+            SDLActivity.mSDLThread = null;
+
+            //Log.v(TAG, "Finished waiting for SDL thread");
+        }
+
+        super.onDestroy();
+        // Reset everything in case the user re opens the app
+        SDLActivity.initialize();
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+
+        if (SDLActivity.mBrokenLibraries) {
+           return false;
+        }
+
+        int keyCode = event.getKeyCode();
+        // Ignore certain special keys so they're handled by Android
+        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN ||
+            keyCode == KeyEvent.KEYCODE_VOLUME_UP ||
+            keyCode == KeyEvent.KEYCODE_CAMERA ||
+            keyCode == 168 || /* API 11: KeyEvent.KEYCODE_ZOOM_IN */
+            keyCode == 169 /* API 11: KeyEvent.KEYCODE_ZOOM_OUT */
+            ) {
+            return false;
+        }
+        return super.dispatchKeyEvent(event);
+    }
+
+    /** Called by onPause or surfaceDestroyed. Even if surfaceDestroyed
+     *  is the first to be called, mIsSurfaceReady should still be set
+     *  to 'true' during the call to onPause (in a usual scenario).
+     */
+    public static void handlePause() {
+        if (!SDLActivity.mIsPaused && SDLActivity.mIsSurfaceReady) {
+            SDLActivity.mIsPaused = true;
+            SDLActivity.nativePause();
+            mSurface.handlePause();
+        }
+    }
+
+    /** Called by onResume or surfaceCreated. An actual resume should be done only when the surface is ready.
+     * Note: Some Android variants may send multiple surfaceChanged events, so we don't need to resume
+     * every time we get one of those events, only if it comes after surfaceDestroyed
+     */
+    public static void handleResume() {
+        if (SDLActivity.mIsPaused && SDLActivity.mIsSurfaceReady && SDLActivity.mHasFocus) {
+            SDLActivity.mIsPaused = false;
+            SDLActivity.nativeResume();
+            mSurface.handleResume();
+        }
+    }
+
+    /* The native thread has finished */
+    public static void handleNativeExit() {
+        SDLActivity.mSDLThread = null;
+        mSingleton.finish();
+    }
+
+
+    // Messages from the SDLMain thread
+    static final int COMMAND_CHANGE_TITLE = 1;
+    static final int COMMAND_UNUSED = 2;
+    static final int COMMAND_TEXTEDIT_HIDE = 3;
+    static final int COMMAND_SET_KEEP_SCREEN_ON = 5;
+
+    protected static final int COMMAND_USER = 0x8000;
+
+    /**
+     * This method is called by SDL if SDL did not handle a message itself.
+     * This happens if a received message contains an unsupported command.
+     * Method can be overwritten to handle Messages in a different class.
+     * @param command the command of the message.
+     * @param param the parameter of the message. May be null.
+     * @return if the message was handled in overridden method.
+     */
+    protected boolean onUnhandledMessage(int command, Object param) {
+        return false;
+    }
+
+    /**
+     * A Handler class for Messages from native SDL applications.
+     * It uses current Activities as target (e.g. for the title).
+     * static to prevent implicit references to enclosing object.
+     */
+    protected static class SDLCommandHandler extends Handler {
+        @Override
+        public void handleMessage(Message msg) {
+            Context context = getContext();
+            if (context == null) {
+                Log.e(TAG, "error handling message, getContext() returned null");
+                return;
+            }
+            switch (msg.arg1) {
+            case COMMAND_CHANGE_TITLE:
+                if (context instanceof Activity) {
+                    ((Activity) context).setTitle((String)msg.obj);
+                } else {
+                    Log.e(TAG, "error handling message, getContext() returned no Activity");
+                }
+                break;
+            case COMMAND_TEXTEDIT_HIDE:
+                if (mTextEdit != null) {
+                    mTextEdit.setVisibility(View.GONE);
+
+                    InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
+                    imm.hideSoftInputFromWindow(mTextEdit.getWindowToken(), 0);
+                }
+                break;
+            case COMMAND_SET_KEEP_SCREEN_ON:
+            {
+                Window window = ((Activity) context).getWindow();
+                if (window != null) {
+                    if ((msg.obj instanceof Integer) && (((Integer) msg.obj).intValue() != 0)) {
+                        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                    } else {
+                        window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                    }
+                }
+                break;
+            }
+            default:
+                if ((context instanceof SDLActivity) && !((SDLActivity) context).onUnhandledMessage(msg.arg1, msg.obj)) {
+                    Log.e(TAG, "error handling message, command is " + msg.arg1);
+                }
+            }
+        }
+    }
+
+    // Handler for the messages
+    Handler commandHandler = new SDLCommandHandler();
+
+    // Send a message from the SDLMain thread
+    boolean sendCommand(int command, Object data) {
+        Message msg = commandHandler.obtainMessage();
+        msg.arg1 = command;
+        msg.obj = data;
+        return commandHandler.sendMessage(msg);
+    }
+
+    // C functions we call
+    public static native int nativeInit(Object arguments);
+    public static native void nativeLowMemory();
+    public static native void nativeQuit();
+    public static native void nativePause();
+    public static native void nativeResume();
+    public static native void onNativeDropFile(String filename);
+    public static native void onNativeResize(int x, int y, int format, float rate);
+    public static native int onNativePadDown(int device_id, int keycode);
+    public static native int onNativePadUp(int device_id, int keycode);
+    public static native void onNativeJoy(int device_id, int axis,
+                                          float value);
+    public static native void onNativeHat(int device_id, int hat_id,
+                                          int x, int y);
+    public static native void onNativeKeyDown(int keycode);
+    public static native void onNativeKeyUp(int keycode);
+    public static native void onNativeKeyboardFocusLost();
+    public static native void onNativeMouse(int button, int action, float x, float y);
+    public static native void onNativeTouch(int touchDevId, int pointerFingerId,
+                                            int action, float x,
+                                            float y, float p);
+    public static native void onNativeAccel(float x, float y, float z);
+    public static native void onNativeSurfaceChanged();
+    public static native void onNativeSurfaceDestroyed();
+    public static native int nativeAddJoystick(int device_id, String name,
+                                               int is_accelerometer, int nbuttons,
+                                               int naxes, int nhats, int nballs);
+    public static native int nativeRemoveJoystick(int device_id);
+    public static native String nativeGetHint(String name);
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static boolean setActivityTitle(String title) {
+        // Called from SDLMain() thread and can't directly affect the view
+        return mSingleton.sendCommand(COMMAND_CHANGE_TITLE, title);
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static boolean sendMessage(int command, int param) {
+        return mSingleton.sendCommand(command, Integer.valueOf(param));
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static Context getContext() {
+        return mSingleton;
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     * @return result of getSystemService(name) but executed on UI thread.
+     */
+    public Object getSystemServiceFromUiThread(final String name) {
+        final Object lock = new Object();
+        final Object[] results = new Object[2]; // array for writable variables
+        synchronized (lock) {
+            runOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    synchronized (lock) {
+                        results[0] = getSystemService(name);
+                        results[1] = Boolean.TRUE;
+                        lock.notify();
+                    }
+                }
+            });
+            if (results[1] == null) {
+                try {
+                    lock.wait();
+                } catch (InterruptedException ex) {
+                    ex.printStackTrace();
+                }
+            }
+        }
+        return results[0];
+    }
+
+    static class ShowTextInputTask implements Runnable {
+        /*
+         * This is used to regulate the pan&scan method to have some offset from
+         * the bottom edge of the input region and the top edge of an input
+         * method (soft keyboard)
+         */
+        static final int HEIGHT_PADDING = 15;
+
+        public int x, y, w, h;
+
+        public ShowTextInputTask(int x, int y, int w, int h) {
+            this.x = x;
+            this.y = y;
+            this.w = w;
+            this.h = h;
+        }
+
+        @Override
+        public void run() {
+            AbsoluteLayout.LayoutParams params = new AbsoluteLayout.LayoutParams(
+                    w, h + HEIGHT_PADDING, x, y);
+
+            if (mTextEdit == null) {
+                mTextEdit = new DummyEdit(getContext());
+
+                mLayout.addView(mTextEdit, params);
+            } else {
+                mTextEdit.setLayoutParams(params);
+            }
+
+            mTextEdit.setVisibility(View.VISIBLE);
+            mTextEdit.requestFocus();
+
+            InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
+            imm.showSoftInput(mTextEdit, 0);
+        }
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static boolean showTextInput(int x, int y, int w, int h) {
+        // Transfer the task to the main thread as a Runnable
+        return mSingleton.commandHandler.post(new ShowTextInputTask(x, y, w, h));
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static Surface getNativeSurface() {
+        return SDLActivity.mSurface.getNativeSurface();
+    }
+
+    // Audio
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static int audioInit(int sampleRate, boolean is16Bit, boolean isStereo, int desiredFrames) {
+        int channelConfig = isStereo ? AudioFormat.CHANNEL_CONFIGURATION_STEREO : AudioFormat.CHANNEL_CONFIGURATION_MONO;
+        int audioFormat = is16Bit ? AudioFormat.ENCODING_PCM_16BIT : AudioFormat.ENCODING_PCM_8BIT;
+        int frameSize = (isStereo ? 2 : 1) * (is16Bit ? 2 : 1);
+
+        Log.v(TAG, "SDL audio: wanted " + (isStereo ? "stereo" : "mono") + " " + (is16Bit ? "16-bit" : "8-bit") + " " + (sampleRate / 1000f) + "kHz, " + desiredFrames + " frames buffer");
+
+        // Let the user pick a larger buffer if they really want -- but ye
+        // gods they probably shouldn't, the minimums are horrifyingly high
+        // latency already
+        desiredFrames = Math.max(desiredFrames, (AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat) + frameSize - 1) / frameSize);
+
+        if (mAudioTrack == null) {
+            mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate,
+                    channelConfig, audioFormat, desiredFrames * frameSize, AudioTrack.MODE_STREAM);
+
+            // Instantiating AudioTrack can "succeed" without an exception and the track may still be invalid
+            // Ref: https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/media/java/android/media/AudioTrack.java
+            // Ref: http://developer.android.com/reference/android/media/AudioTrack.html#getState()
+
+            if (mAudioTrack.getState() != AudioTrack.STATE_INITIALIZED) {
+                Log.e(TAG, "Failed during initialization of Audio Track");
+                mAudioTrack = null;
+                return -1;
+            }
+
+            mAudioTrack.play();
+        }
+
+        Log.v(TAG, "SDL audio: got " + ((mAudioTrack.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioTrack.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + (mAudioTrack.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer");
+
+        return 0;
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static void audioWriteShortBuffer(short[] buffer) {
+        for (int i = 0; i < buffer.length; ) {
+            int result = mAudioTrack.write(buffer, i, buffer.length - i);
+            if (result > 0) {
+                i += result;
+            } else if (result == 0) {
+                try {
+                    Thread.sleep(1);
+                } catch(InterruptedException e) {
+                    // Nom nom
+                }
+            } else {
+                Log.w(TAG, "SDL audio: error return from write(short)");
+                return;
+            }
+        }
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static void audioWriteByteBuffer(byte[] buffer) {
+        for (int i = 0; i < buffer.length; ) {
+            int result = mAudioTrack.write(buffer, i, buffer.length - i);
+            if (result > 0) {
+                i += result;
+            } else if (result == 0) {
+                try {
+                    Thread.sleep(1);
+                } catch(InterruptedException e) {
+                    // Nom nom
+                }
+            } else {
+                Log.w(TAG, "SDL audio: error return from write(byte)");
+                return;
+            }
+        }
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static void audioQuit() {
+        if (mAudioTrack != null) {
+            mAudioTrack.stop();
+            mAudioTrack = null;
+        }
+    }
+
+    // Input
+
+    /**
+     * This method is called by SDL using JNI.
+     * @return an array which may be empty but is never null.
+     */
+    public static int[] inputGetInputDeviceIds(int sources) {
+        int[] ids = InputDevice.getDeviceIds();
+        int[] filtered = new int[ids.length];
+        int used = 0;
+        for (int i = 0; i < ids.length; ++i) {
+            InputDevice device = InputDevice.getDevice(ids[i]);
+            if ((device != null) && ((device.getSources() & sources) != 0)) {
+                filtered[used++] = device.getId();
+            }
+        }
+        return Arrays.copyOf(filtered, used);
+    }
+
+    // Joystick glue code, just a series of stubs that redirect to the SDLJoystickHandler instance
+    public static boolean handleJoystickMotionEvent(MotionEvent event) {
+        return mJoystickHandler.handleMotionEvent(event);
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static void pollInputDevices() {
+        if (SDLActivity.mSDLThread != null) {
+            mJoystickHandler.pollInputDevices();
+        }
+    }
+
+    // APK expansion files support
+
+    /** com.android.vending.expansion.zipfile.ZipResourceFile object or null. */
+    private Object expansionFile;
+
+    /** com.android.vending.expansion.zipfile.ZipResourceFile's getInputStream() or null. */
+    private Method expansionFileMethod;
+
+    /**
+     * This method was called by SDL using JNI.
+     * @deprecated because of an incorrect name
+     */
+    @Deprecated
+    public InputStream openAPKExtensionInputStream(String fileName) throws IOException {
+        return openAPKExpansionInputStream(fileName);
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     * @return an InputStream on success or null if no expansion file was used.
+     * @throws IOException on errors. Message is set for the SDL error message.
+     */
+    public InputStream openAPKExpansionInputStream(String fileName) throws IOException {
+        // Get a ZipResourceFile representing a merger of both the main and patch files
+        if (expansionFile == null) {
+            String mainHint = nativeGetHint("SDL_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION");
+            if (mainHint == null) {
+                return null; // no expansion use if no main version was set
+            }
+            String patchHint = nativeGetHint("SDL_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION");
+            if (patchHint == null) {
+                return null; // no expansion use if no patch version was set
+            }
+
+            Integer mainVersion;
+            Integer patchVersion;
+            try {
+                mainVersion = Integer.valueOf(mainHint);
+                patchVersion = Integer.valueOf(patchHint);
+            } catch (NumberFormatException ex) {
+                ex.printStackTrace();
+                throw new IOException("No valid file versions set for APK expansion files", ex);
+            }
+
+            try {
+                // To avoid direct dependency on Google APK expansion library that is
+                // not a part of Android SDK we access it using reflection
+                expansionFile = Class.forName("com.android.vending.expansion.zipfile.APKExpansionSupport")
+                    .getMethod("getAPKExpansionZipFile", Context.class, int.class, int.class)
+                    .invoke(null, this, mainVersion, patchVersion);
+
+                expansionFileMethod = expansionFile.getClass()
+                    .getMethod("getInputStream", String.class);
+            } catch (Exception ex) {
+                ex.printStackTrace();
+                expansionFile = null;
+                expansionFileMethod = null;
+                throw new IOException("Could not access APK expansion support library", ex);
+            }
+        }
+
+        // Get an input stream for a known file inside the expansion file ZIPs
+        InputStream fileStream;
+        try {
+            fileStream = (InputStream)expansionFileMethod.invoke(expansionFile, fileName);
+        } catch (Exception ex) {
+            // calling "getInputStream" failed
+            ex.printStackTrace();
+            throw new IOException("Could not open stream from APK expansion file", ex);
+        }
+
+        if (fileStream == null) {
+            // calling "getInputStream" was successful but null was returned
+            throw new IOException("Could not find path in APK expansion file");
+        }
+
+        return fileStream;
+    }
+
+    // Messagebox
+
+    /** Result of current messagebox. Also used for blocking the calling thread. */
+    protected final int[] messageboxSelection = new int[1];
+
+    /** Id of current dialog. */
+    protected int dialogs = 0;
+
+    /**
+     * This method is called by SDL using JNI.
+     * Shows the messagebox from UI thread and block calling thread.
+     * buttonFlags, buttonIds and buttonTexts must have same length.
+     * @param buttonFlags array containing flags for every button.
+     * @param buttonIds array containing id for every button.
+     * @param buttonTexts array containing text for every button.
+     * @param colors null for default or array of length 5 containing colors.
+     * @return button id or -1.
+     */
+    public int messageboxShowMessageBox(
+            final int flags,
+            final String title,
+            final String message,
+            final int[] buttonFlags,
+            final int[] buttonIds,
+            final String[] buttonTexts,
+            final int[] colors) {
+
+        messageboxSelection[0] = -1;
+
+        // sanity checks
+
+        if ((buttonFlags.length != buttonIds.length) && (buttonIds.length != buttonTexts.length)) {
+            return -1; // implementation broken
+        }
+
+        // collect arguments for Dialog
+
+        final Bundle args = new Bundle();
+        args.putInt("flags", flags);
+        args.putString("title", title);
+        args.putString("message", message);
+        args.putIntArray("buttonFlags", buttonFlags);
+        args.putIntArray("buttonIds", buttonIds);
+        args.putStringArray("buttonTexts", buttonTexts);
+        args.putIntArray("colors", colors);
+
+        // trigger Dialog creation on UI thread
+
+        runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                showDialog(dialogs++, args);
+            }
+        });
+
+        // block the calling thread
+
+        synchronized (messageboxSelection) {
+            try {
+                messageboxSelection.wait();
+            } catch (InterruptedException ex) {
+                ex.printStackTrace();
+                return -1;
+            }
+        }
+
+        // return selected value
+
+        return messageboxSelection[0];
+    }
+
+    @Override
+    protected Dialog onCreateDialog(int ignore, Bundle args) {
+
+        // TODO set values from "flags" to messagebox dialog
+
+        // get colors
+
+        int[] colors = args.getIntArray("colors");
+        int backgroundColor;
+        int textColor;
+        int buttonBorderColor;
+        int buttonBackgroundColor;
+        int buttonSelectedColor;
+        if (colors != null) {
+            int i = -1;
+            backgroundColor = colors[++i];
+            textColor = colors[++i];
+            buttonBorderColor = colors[++i];
+            buttonBackgroundColor = colors[++i];
+            buttonSelectedColor = colors[++i];
+        } else {
+            backgroundColor = Color.TRANSPARENT;
+            textColor = Color.TRANSPARENT;
+            buttonBorderColor = Color.TRANSPARENT;
+            buttonBackgroundColor = Color.TRANSPARENT;
+            buttonSelectedColor = Color.TRANSPARENT;
+        }
+
+        // create dialog with title and a listener to wake up calling thread
+
+        final Dialog dialog = new Dialog(this);
+        dialog.setTitle(args.getString("title"));
+        dialog.setCancelable(false);
+        dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
+            @Override
+            public void onDismiss(DialogInterface unused) {
+                synchronized (messageboxSelection) {
+                    messageboxSelection.notify();
+                }
+            }
+        });
+
+        // create text
+
+        TextView message = new TextView(this);
+        message.setGravity(Gravity.CENTER);
+        message.setText(args.getString("message"));
+        if (textColor != Color.TRANSPARENT) {
+            message.setTextColor(textColor);
+        }
+
+        // create buttons
+
+        int[] buttonFlags = args.getIntArray("buttonFlags");
+        int[] buttonIds = args.getIntArray("buttonIds");
+        String[] buttonTexts = args.getStringArray("buttonTexts");
+
+        final SparseArray<Button> mapping = new SparseArray<Button>();
+
+        LinearLayout buttons = new LinearLayout(this);
+        buttons.setOrientation(LinearLayout.HORIZONTAL);
+        buttons.setGravity(Gravity.CENTER);
+        for (int i = 0; i < buttonTexts.length; ++i) {
+            Button button = new Button(this);
+            final int id = buttonIds[i];
+            button.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    messageboxSelection[0] = id;
+                    dialog.dismiss();
+                }
+            });
+            if (buttonFlags[i] != 0) {
+                // see SDL_messagebox.h
+                if ((buttonFlags[i] & 0x00000001) != 0) {
+                    mapping.put(KeyEvent.KEYCODE_ENTER, button);
+                }
+                if ((buttonFlags[i] & 0x00000002) != 0) {
+                    mapping.put(111, button); /* API 11: KeyEvent.KEYCODE_ESCAPE */
+                }
+            }
+            button.setText(buttonTexts[i]);
+            if (textColor != Color.TRANSPARENT) {
+                button.setTextColor(textColor);
+            }
+            if (buttonBorderColor != Color.TRANSPARENT) {
+                // TODO set color for border of messagebox button
+            }
+            if (buttonBackgroundColor != Color.TRANSPARENT) {
+                Drawable drawable = button.getBackground();
+                if (drawable == null) {
+                    // setting the color this way removes the style
+                    button.setBackgroundColor(buttonBackgroundColor);
+                } else {
+                    // setting the color this way keeps the style (gradient, padding, etc.)
+                    drawable.setColorFilter(buttonBackgroundColor, PorterDuff.Mode.MULTIPLY);
+                }
+            }
+            if (buttonSelectedColor != Color.TRANSPARENT) {
+                // TODO set color for selected messagebox button
+            }
+            buttons.addView(button);
+        }
+
+        // create content
+
+        LinearLayout content = new LinearLayout(this);
+        content.setOrientation(LinearLayout.VERTICAL);
+        content.addView(message);
+        content.addView(buttons);
+        if (backgroundColor != Color.TRANSPARENT) {
+            content.setBackgroundColor(backgroundColor);
+        }
+
+        // add content to dialog and return
+
+        dialog.setContentView(content);
+        dialog.setOnKeyListener(new Dialog.OnKeyListener() {
+            @Override
+            public boolean onKey(DialogInterface d, int keyCode, KeyEvent event) {
+                Button button = mapping.get(keyCode);
+                if (button != null) {
+                    if (event.getAction() == KeyEvent.ACTION_UP) {
+                        button.performClick();
+                    }
+                    return true; // also for ignored actions
+                }
+                return false;
+            }
+        });
+
+        return dialog;
+    }
+}
+
+/**
+    Simple nativeInit() runnable
+*/
+class SDLMain implements Runnable {
+    @Override
+    public void run() {
+        // Runs SDL_main()
+        SDLActivity.nativeInit(SDLActivity.mSingleton.getArguments());
+
+        Log.v("SDL", "SDL thread terminated");
+    }
+}
+
+
+/**
+    SDLSurface. This is what we draw on, so we need to know when it's created
+    in order to do anything useful.
+
+    Because of this, that's where we set up the SDL thread
+*/
+class SDLSurface extends SurfaceView implements SurfaceHolder.Callback,
+    View.OnKeyListener, View.OnTouchListener, SensorEventListener  {
+
+    // Sensors
+    protected static SensorManager mSensorManager;
+    protected static Display mDisplay;
+
+    // Keep track of the surface size to normalize touch events
+    protected static float mWidth, mHeight;
+
+    // Startup
+    public SDLSurface(Context context) {
+        super(context);
+        getHolder().addCallback(this);
+
+        setFocusable(true);
+        setFocusableInTouchMode(true);
+        requestFocus();
+        setOnKeyListener(this);
+        setOnTouchListener(this);
+
+        mDisplay = ((WindowManager)context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
+        mSensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
+
+        if(Build.VERSION.SDK_INT >= 12) {
+            setOnGenericMotionListener(new SDLGenericMotionListener_API12());
+        }
+
+        // Some arbitrary defaults to avoid a potential division by zero
+        mWidth = 1.0f;
+        mHeight = 1.0f;
+    }
+
+    public void handlePause() {
+        enableSensor(Sensor.TYPE_ACCELEROMETER, false);
+    }
+
+    public void handleResume() {
+        setFocusable(true);
+        setFocusableInTouchMode(true);
+        requestFocus();
+        setOnKeyListener(this);
+        setOnTouchListener(this);
+        enableSensor(Sensor.TYPE_ACCELEROMETER, true);
+    }
+
+    public Surface getNativeSurface() {
+        return getHolder().getSurface();
+    }
+
+    // Called when we have a valid drawing surface
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+        Log.v("SDL", "surfaceCreated()");
+        holder.setType(SurfaceHolder.SURFACE_TYPE_GPU);
+    }
+
+    // Called when we lose the surface
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+        Log.v("SDL", "surfaceDestroyed()");
+        // Call this *before* setting mIsSurfaceReady to 'false'
+        SDLActivity.handlePause();
+        SDLActivity.mIsSurfaceReady = false;
+        SDLActivity.onNativeSurfaceDestroyed();
+    }
+
+    // Called when the surface is resized
+    @Override
+    public void surfaceChanged(SurfaceHolder holder,
+                               int format, int width, int height) {
+        Log.v("SDL", "surfaceChanged()");
+
+        int sdlFormat = 0x15151002; // SDL_PIXELFORMAT_RGB565 by default
+        switch (format) {
+        case PixelFormat.A_8:
+            Log.v("SDL", "pixel format A_8");
+            break;
+        case PixelFormat.LA_88:
+            Log.v("SDL", "pixel format LA_88");
+            break;
+        case PixelFormat.L_8:
+            Log.v("SDL", "pixel format L_8");
+            break;
+        case PixelFormat.RGBA_4444:
+            Log.v("SDL", "pixel format RGBA_4444");
+            sdlFormat = 0x15421002; // SDL_PIXELFORMAT_RGBA4444
+            break;
+        case PixelFormat.RGBA_5551:
+            Log.v("SDL", "pixel format RGBA_5551");
+            sdlFormat = 0x15441002; // SDL_PIXELFORMAT_RGBA5551
+            break;
+        case PixelFormat.RGBA_8888:
+            Log.v("SDL", "pixel format RGBA_8888");
+            sdlFormat = 0x16462004; // SDL_PIXELFORMAT_RGBA8888
+            break;
+        case PixelFormat.RGBX_8888:
+            Log.v("SDL", "pixel format RGBX_8888");
+            sdlFormat = 0x16261804; // SDL_PIXELFORMAT_RGBX8888
+            break;
+        case PixelFormat.RGB_332:
+            Log.v("SDL", "pixel format RGB_332");
+            sdlFormat = 0x14110801; // SDL_PIXELFORMAT_RGB332
+            break;
+        case PixelFormat.RGB_565:
+            Log.v("SDL", "pixel format RGB_565");
+            sdlFormat = 0x15151002; // SDL_PIXELFORMAT_RGB565
+            break;
+        case PixelFormat.RGB_888:
+            Log.v("SDL", "pixel format RGB_888");
+            // Not sure this is right, maybe SDL_PIXELFORMAT_RGB24 instead?
+            sdlFormat = 0x16161804; // SDL_PIXELFORMAT_RGB888
+            break;
+        default:
+            Log.v("SDL", "pixel format unknown " + format);
+            break;
+        }
+
+        mWidth = width;
+        mHeight = height;
+        SDLActivity.onNativeResize(width, height, sdlFormat, mDisplay.getRefreshRate());
+        Log.v("SDL", "Window size: " + width + "x" + height);
+
+ 
+        boolean skip = false;
+        int requestedOrientation = SDLActivity.mSingleton.getRequestedOrientation();
+
+        if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED)
+        {
+            // Accept any
+        }
+        else if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT)
+        {
+            if (mWidth > mHeight) {
+               skip = true;
+            }
+        } else if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {
+            if (mWidth < mHeight) {
+               skip = true;
+            }
+        }
+
+        // Special Patch for Square Resolution: Black Berry Passport
+        if (skip) {
+           double min = Math.min(mWidth, mHeight);
+           double max = Math.max(mWidth, mHeight);
+           
+           if (max / min < 1.20) {
+              Log.v("SDL", "Don't skip on such aspect-ratio. Could be a square resolution.");
+              skip = false;
+           }
+        }
+
+        if (skip) {
+           Log.v("SDL", "Skip .. Surface is not ready.");
+           return;
+        }
+
+
+        // Set mIsSurfaceReady to 'true' *before* making a call to handleResume
+        SDLActivity.mIsSurfaceReady = true;
+        SDLActivity.onNativeSurfaceChanged();
+
+
+        if (SDLActivity.mSDLThread == null) {
+            // This is the entry point to the C app.
+            // Start up the C app thread and enable sensor input for the first time
+
+            final Thread sdlThread = new Thread(new SDLMain(), "SDLThread");
+            enableSensor(Sensor.TYPE_ACCELEROMETER, true);
+            sdlThread.start();
+
+            // Set up a listener thread to catch when the native thread ends
+            SDLActivity.mSDLThread = new Thread(new Runnable(){
+                @Override
+                public void run(){
+                    try {
+                        sdlThread.join();
+                    }
+                    catch(Exception e){}
+                    finally{
+                        // Native thread has finished
+                        if (! SDLActivity.mExitCalledFromJava) {
+                            SDLActivity.handleNativeExit();
+                        }
+                    }
+                }
+            }, "SDLThreadListener");
+            SDLActivity.mSDLThread.start();
+        }
+
+        if (SDLActivity.mHasFocus) {
+            SDLActivity.handleResume();
+        }
+    }
+
+    // Key events
+    @Override
+    public boolean onKey(View  v, int keyCode, KeyEvent event) {
+        // Dispatch the different events depending on where they come from
+        // Some SOURCE_DPAD or SOURCE_GAMEPAD are also SOURCE_KEYBOARD
+        // So, we try to process them as DPAD or GAMEPAD events first, if that fails we try them as KEYBOARD
+
+        if ( (event.getSource() & InputDevice.SOURCE_GAMEPAD) != 0 ||
+                   (event.getSource() & InputDevice.SOURCE_DPAD) != 0 ) {
+            if (event.getAction() == KeyEvent.ACTION_DOWN) {
+                if (SDLActivity.onNativePadDown(event.getDeviceId(), keyCode) == 0) {
+                    return true;
+                }
+            } else if (event.getAction() == KeyEvent.ACTION_UP) {
+                if (SDLActivity.onNativePadUp(event.getDeviceId(), keyCode) == 0) {
+                    return true;
+                }
+            }
+        }
+
+        if( (event.getSource() & InputDevice.SOURCE_KEYBOARD) != 0) {
+            if (event.getAction() == KeyEvent.ACTION_DOWN) {
+                //Log.v("SDL", "key down: " + keyCode);
+                SDLActivity.onNativeKeyDown(keyCode);
+                return true;
+            }
+            else if (event.getAction() == KeyEvent.ACTION_UP) {
+                //Log.v("SDL", "key up: " + keyCode);
+                SDLActivity.onNativeKeyUp(keyCode);
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    // Touch events
+    @Override
+    public boolean onTouch(View v, MotionEvent event) {
+        /* Ref: http://developer.android.com/training/gestures/multi.html */
+        final int touchDevId = event.getDeviceId();
+        final int pointerCount = event.getPointerCount();
+        int action = event.getActionMasked();
+        int pointerFingerId;
+        int mouseButton;
+        int i = -1;
+        float x,y,p;
+
+        // !!! FIXME: dump this SDK check after 2.0.4 ships and require API14.
+        if (event.getSource() == InputDevice.SOURCE_MOUSE && SDLActivity.mSeparateMouseAndTouch) {
+            if (Build.VERSION.SDK_INT < 14) {
+                mouseButton = 1;    // For Android==12 all mouse buttons are the left button
+            } else {
+                try {
+                    mouseButton = (Integer) event.getClass().getMethod("getButtonState").invoke(event);
+                } catch(Exception e) {
+                    mouseButton = 1;    // oh well.
+                }
+            }
+            SDLActivity.onNativeMouse(mouseButton, action, event.getX(0), event.getY(0));
+        } else {
+            switch(action) {
+                case MotionEvent.ACTION_MOVE:
+                    for (i = 0; i < pointerCount; i++) {
+                        pointerFingerId = event.getPointerId(i);
+                        x = event.getX(i) / mWidth;
+                        y = event.getY(i) / mHeight;
+                        p = event.getPressure(i);
+                        if (p > 1.0f) {
+                            // may be larger than 1.0f on some devices
+                            // see the documentation of getPressure(i)
+                            p = 1.0f;
+                        }
+                        SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p);
+                    }
+                    break;
+
+                case MotionEvent.ACTION_UP:
+                case MotionEvent.ACTION_DOWN:
+                    // Primary pointer up/down, the index is always zero
+                    i = 0;
+                case MotionEvent.ACTION_POINTER_UP:
+                case MotionEvent.ACTION_POINTER_DOWN:
+                    // Non primary pointer up/down
+                    if (i == -1) {
+                        i = event.getActionIndex();
+                    }
+
+                    pointerFingerId = event.getPointerId(i);
+                    x = event.getX(i) / mWidth;
+                    y = event.getY(i) / mHeight;
+                    p = event.getPressure(i);
+                    if (p > 1.0f) {
+                        // may be larger than 1.0f on some devices
+                        // see the documentation of getPressure(i)
+                        p = 1.0f;
+                    }
+                    SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p);
+                    break;
+
+                case MotionEvent.ACTION_CANCEL:
+                    for (i = 0; i < pointerCount; i++) {
+                        pointerFingerId = event.getPointerId(i);
+                        x = event.getX(i) / mWidth;
+                        y = event.getY(i) / mHeight;
+                        p = event.getPressure(i);
+                        if (p > 1.0f) {
+                            // may be larger than 1.0f on some devices
+                            // see the documentation of getPressure(i)
+                            p = 1.0f;
+                        }
+                        SDLActivity.onNativeTouch(touchDevId, pointerFingerId, MotionEvent.ACTION_UP, x, y, p);
+                    }
+                    break;
+
+                default:
+                    break;
+            }
+        }
+
+        return true;
+   }
+
+    // Sensor events
+    public void enableSensor(int sensortype, boolean enabled) {
+        // TODO: This uses getDefaultSensor - what if we have >1 accels?
+        if (enabled) {
+            mSensorManager.registerListener(this,
+                            mSensorManager.getDefaultSensor(sensortype),
+                            SensorManager.SENSOR_DELAY_GAME, null);
+        } else {
+            mSensorManager.unregisterListener(this,
+                            mSensorManager.getDefaultSensor(sensortype));
+        }
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+        // TODO
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
+            float x, y;
+            switch (mDisplay.getRotation()) {
+                case Surface.ROTATION_90:
+                    x = -event.values[1];
+                    y = event.values[0];
+                    break;
+                case Surface.ROTATION_270:
+                    x = event.values[1];
+                    y = -event.values[0];
+                    break;
+                case Surface.ROTATION_180:
+                    x = -event.values[1];
+                    y = -event.values[0];
+                    break;
+                default:
+                    x = event.values[0];
+                    y = event.values[1];
+                    break;
+            }
+            SDLActivity.onNativeAccel(-x / SensorManager.GRAVITY_EARTH,
+                                      y / SensorManager.GRAVITY_EARTH,
+                                      event.values[2] / SensorManager.GRAVITY_EARTH - 1);
+        }
+    }
+}
+
+/* This is a fake invisible editor view that receives the input and defines the
+ * pan&scan region
+ */
+class DummyEdit extends View implements View.OnKeyListener {
+    InputConnection ic;
+
+    public DummyEdit(Context context) {
+        super(context);
+        setFocusableInTouchMode(true);
+        setFocusable(true);
+        setOnKeyListener(this);
+    }
+
+    @Override
+    public boolean onCheckIsTextEditor() {
+        return true;
+    }
+
+    @Override
+    public boolean onKey(View v, int keyCode, KeyEvent event) {
+
+        // This handles the hardware keyboard input
+        if (event.isPrintingKey()) {
+            if (event.getAction() == KeyEvent.ACTION_DOWN) {
+                ic.commitText(String.valueOf((char) event.getUnicodeChar()), 1);
+            }
+            return true;
+        }
+
+        if (event.getAction() == KeyEvent.ACTION_DOWN) {
+            SDLActivity.onNativeKeyDown(keyCode);
+            return true;
+        } else if (event.getAction() == KeyEvent.ACTION_UP) {
+            SDLActivity.onNativeKeyUp(keyCode);
+            return true;
+        }
+
+        return false;
+    }
+
+    //
+    @Override
+    public boolean onKeyPreIme (int keyCode, KeyEvent event) {
+        // As seen on StackOverflow: http://stackoverflow.com/questions/7634346/keyboard-hide-event
+        // FIXME: Discussion at http://bugzilla.libsdl.org/show_bug.cgi?id=1639
+        // FIXME: This is not a 100% effective solution to the problem of detecting if the keyboard is showing or not
+        // FIXME: A more effective solution would be to change our Layout from AbsoluteLayout to Relative or Linear
+        // FIXME: And determine the keyboard presence doing this: http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android
+        // FIXME: An even more effective way would be if Android provided this out of the box, but where would the fun be in that :)
+        if (event.getAction()==KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) {
+            if (SDLActivity.mTextEdit != null && SDLActivity.mTextEdit.getVisibility() == View.VISIBLE) {
+                SDLActivity.onNativeKeyboardFocusLost();
+            }
+        }
+        return super.onKeyPreIme(keyCode, event);
+    }
+
+    @Override
+    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
+        ic = new SDLInputConnection(this, true);
+
+        outAttrs.inputType = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD;
+        outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI
+                | 33554432 /* API 11: EditorInfo.IME_FLAG_NO_FULLSCREEN */;
+
+        return ic;
+    }
+}
+
+class SDLInputConnection extends BaseInputConnection {
+
+    public SDLInputConnection(View targetView, boolean fullEditor) {
+        super(targetView, fullEditor);
+
+    }
+
+    @Override
+    public boolean sendKeyEvent(KeyEvent event) {
+
+        /*
+         * This handles the keycodes from soft keyboard (and IME-translated
+         * input from hardkeyboard)
+         */
+        int keyCode = event.getKeyCode();
+        if (event.getAction() == KeyEvent.ACTION_DOWN) {
+            if (event.isPrintingKey()) {
+                commitText(String.valueOf((char) event.getUnicodeChar()), 1);
+            }
+            SDLActivity.onNativeKeyDown(keyCode);
+            return true;
+        } else if (event.getAction() == KeyEvent.ACTION_UP) {
+
+            SDLActivity.onNativeKeyUp(keyCode);
+            return true;
+        }
+        return super.sendKeyEvent(event);
+    }
+
+    @Override
+    public boolean commitText(CharSequence text, int newCursorPosition) {
+
+        nativeCommitText(text.toString(), newCursorPosition);
+
+        return super.commitText(text, newCursorPosition);
+    }
+
+    @Override
+    public boolean setComposingText(CharSequence text, int newCursorPosition) {
+
+        nativeSetComposingText(text.toString(), newCursorPosition);
+
+        return super.setComposingText(text, newCursorPosition);
+    }
+
+    public native void nativeCommitText(String text, int newCursorPosition);
+
+    public native void nativeSetComposingText(String text, int newCursorPosition);
+
+    @Override
+    public boolean deleteSurroundingText(int beforeLength, int afterLength) {
+        // Workaround to capture backspace key. Ref: http://stackoverflow.com/questions/14560344/android-backspace-in-webview-baseinputconnection
+        if (beforeLength == 1 && afterLength == 0) {
+            // backspace
+            return super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL))
+                && super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL));
+        }
+
+        return super.deleteSurroundingText(beforeLength, afterLength);
+    }
+}
+
+/* A null joystick handler for API level < 12 devices (the accelerometer is handled separately) */
+class SDLJoystickHandler {
+
+    /**
+     * Handles given MotionEvent.
+     * @param event the event to be handled.
+     * @return if given event was processed.
+     */
+    public boolean handleMotionEvent(MotionEvent event) {
+        return false;
+    }
+
+    /**
+     * Handles adding and removing of input devices.
+     */
+    public void pollInputDevices() {
+    }
+}
+
+/* Actual joystick functionality available for API >= 12 devices */
+class SDLJoystickHandler_API12 extends SDLJoystickHandler {
+
+    static class SDLJoystick {
+        public int device_id;
+        public String name;
+        public ArrayList<InputDevice.MotionRange> axes;
+        public ArrayList<InputDevice.MotionRange> hats;
+    }
+    static class RangeComparator implements Comparator<InputDevice.MotionRange> {
+        @Override
+        public int compare(InputDevice.MotionRange arg0, InputDevice.MotionRange arg1) {
+            return arg0.getAxis() - arg1.getAxis();
+        }
+    }
+
+    private ArrayList<SDLJoystick> mJoysticks;
+
+    public SDLJoystickHandler_API12() {
+
+        mJoysticks = new ArrayList<SDLJoystick>();
+    }
+
+    @Override
+    public void pollInputDevices() {
+        int[] deviceIds = InputDevice.getDeviceIds();
+        // It helps processing the device ids in reverse order
+        // For example, in the case of the XBox 360 wireless dongle,
+        // so the first controller seen by SDL matches what the receiver
+        // considers to be the first controller
+
+        for(int i=deviceIds.length-1; i>-1; i--) {
+            SDLJoystick joystick = getJoystick(deviceIds[i]);
+            if (joystick == null) {
+                joystick = new SDLJoystick();
+                InputDevice joystickDevice = InputDevice.getDevice(deviceIds[i]);
+
+                if ( 
+                      (joystickDevice.getSources() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0 
+                   ||
+                      (joystickDevice.getSources() & InputDevice.SOURCE_CLASS_BUTTON) != 0 
+                  )
+                {
+                    joystick.device_id = deviceIds[i];
+                    joystick.name = joystickDevice.getName();
+                    joystick.axes = new ArrayList<InputDevice.MotionRange>();
+                    joystick.hats = new ArrayList<InputDevice.MotionRange>();
+
+                    List<InputDevice.MotionRange> ranges = joystickDevice.getMotionRanges();
+                    Collections.sort(ranges, new RangeComparator());
+                    for (InputDevice.MotionRange range : ranges ) {
+                        if ((range.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0 ) {
+                            if (range.getAxis() == MotionEvent.AXIS_HAT_X ||
+                                range.getAxis() == MotionEvent.AXIS_HAT_Y) {
+                                joystick.hats.add(range);
+                            }
+                            else {
+                                joystick.axes.add(range);
+                            }
+                        }
+                    }
+
+                    mJoysticks.add(joystick);
+                    SDLActivity.nativeAddJoystick(joystick.device_id, joystick.name, 0, -1,
+                                                  joystick.axes.size(), joystick.hats.size()/2, 0);
+                }
+            }
+        }
+
+        /* Check removed devices */
+        ArrayList<Integer> removedDevices = new ArrayList<Integer>();
+        for(int i=0; i < mJoysticks.size(); i++) {
+            int device_id = mJoysticks.get(i).device_id;
+            int j;
+            for (j=0; j < deviceIds.length; j++) {
+                if (device_id == deviceIds[j]) break;
+            }
+            if (j == deviceIds.length) {
+                removedDevices.add(Integer.valueOf(device_id));
+            }
+        }
+
+        for(int i=0; i < removedDevices.size(); i++) {
+            int device_id = removedDevices.get(i).intValue();
+            SDLActivity.nativeRemoveJoystick(device_id);
+            for (int j=0; j < mJoysticks.size(); j++) {
+                if (mJoysticks.get(j).device_id == device_id) {
+                    mJoysticks.remove(j);
+                    break;
+                }
+            }
+        }
+    }
+
+    protected SDLJoystick getJoystick(int device_id) {
+        for(int i=0; i < mJoysticks.size(); i++) {
+            if (mJoysticks.get(i).device_id == device_id) {
+                return mJoysticks.get(i);
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public boolean handleMotionEvent(MotionEvent event) {
+        if ( (event.getSource() & InputDevice.SOURCE_JOYSTICK) != 0) {
+            int actionPointerIndex = event.getActionIndex();
+            int action = event.getActionMasked();
+            switch(action) {
+                case MotionEvent.ACTION_MOVE:
+                    SDLJoystick joystick = getJoystick(event.getDeviceId());
+                    if ( joystick != null ) {
+                        for (int i = 0; i < joystick.axes.size(); i++) {
+                            InputDevice.MotionRange range = joystick.axes.get(i);
+                            /* Normalize the value to -1...1 */
+                            float value = ( event.getAxisValue( range.getAxis(), actionPointerIndex) - range.getMin() ) / range.getRange() * 2.0f - 1.0f;
+                            SDLActivity.onNativeJoy(joystick.device_id, i, value );
+                        }
+                        for (int i = 0; i < joystick.hats.size(); i+=2) {
+                            int hatX = Math.round(event.getAxisValue( joystick.hats.get(i).getAxis(), actionPointerIndex ) );
+                            int hatY = Math.round(event.getAxisValue( joystick.hats.get(i+1).getAxis(), actionPointerIndex ) );
+                            SDLActivity.onNativeHat(joystick.device_id, i/2, hatX, hatY );
+                        }
+                    }
+                    break;
+                default:
+                    break;
+            }
+        }
+        return true;
+    }
+}
+
+class SDLGenericMotionListener_API12 implements View.OnGenericMotionListener {
+    // Generic Motion (mouse hover, joystick...) events go here
+    @Override
+    public boolean onGenericMotion(View v, MotionEvent event) {
+        float x, y;
+        int action;
+
+        switch ( event.getSource() ) {
+            case InputDevice.SOURCE_JOYSTICK:
+            case InputDevice.SOURCE_GAMEPAD:
+            case InputDevice.SOURCE_DPAD:
+                SDLActivity.handleJoystickMotionEvent(event);
+                return true;
+
+            case InputDevice.SOURCE_MOUSE:
+                action = event.getActionMasked();
+                switch (action) {
+                    case MotionEvent.ACTION_SCROLL:
+                        x = event.getAxisValue(MotionEvent.AXIS_HSCROLL, 0);
+                        y = event.getAxisValue(MotionEvent.AXIS_VSCROLL, 0);
+                        SDLActivity.onNativeMouse(0, action, x, y);
+                        return true;
+
+                    case MotionEvent.ACTION_HOVER_MOVE:
+                        x = event.getX(0);
+                        y = event.getY(0);
+
+                        SDLActivity.onNativeMouse(0, action, x, y);
+                        return true;
+
+                    default:
+                        break;
+                }
+                break;
+
+            default:
+                break;
+        }
+
+        // Event was not managed
+        return false;
+    }
+}
diff --git a/platform_tools/android/gyp/dependencies.gypi b/platform_tools/android/gyp/dependencies.gypi
index f6298c1558..916f88ab49 100644
--- a/platform_tools/android/gyp/dependencies.gypi
+++ b/platform_tools/android/gyp/dependencies.gypi
@@ -14,9 +14,6 @@
 # tested.
 
 {
-  'variables': {
-    'skia_warnings_as_errors': 0,
-  },
   'targets': [
     {
       'target_name': 'native_app_glue',
diff --git a/platform_tools/android/gyp/skia_android.gypi b/platform_tools/android/gyp/skia_android.gypi
index 09a63d50aa..6e85b89030 100644
--- a/platform_tools/android/gyp/skia_android.gypi
+++ b/platform_tools/android/gyp/skia_android.gypi
@@ -187,6 +187,7 @@
           'action_name': 'SkiaVisualBench_apk',
           'inputs': [
             '<(android_base)/apps/visualbench/src/main/AndroidManifest.xml',
+            '<(android_base)/apps/visualbench/src/main/java/org/libsdl/app/SDLActivity.java',
             '<(android_base)/apps/visualbench/src/main/java/com/skia/VisualBenchActivity.java',
             '<(android_base)/apps/visualbench/src/main/java/com/skia/VisualBenchTestActivity.java',
             '<(android_base)/apps/visualbench/src/main/libs/<(android_arch)/libvisualbench.so',
@@ -210,5 +211,71 @@
         },
       ],
     },
+    # TODO all of this duplicated code can be removed when SDL becomes the default
+    # Currently, to use this you have to override skia_use_sdl
+    {
+      'target_name': 'CopyVisualBenchSDLDeps',
+      'type': 'none',
+      'dependencies': [
+        'skia_lib.gyp:skia_lib',
+        'visualbench.gyp:visualbench',
+      ],
+
+      'copies': [
+        # Copy all shared libraries into the Android app's libs folder.  Note
+        # that this copy requires us to build SkiaAndroidApp after those
+        # libraries, so that they exist by the time it occurs.  If there are no
+        # libraries to copy, this will cause an error in Make, but the app will
+        # still build.
+        {
+          'destination': '<(android_base)/apps/visualbenchsdl/src/main/libs/<(android_arch)',
+          'conditions': [
+            [ 'skia_shared_lib', {
+              'files': [
+                '<(SHARED_LIB_DIR)/libskia_android.so',
+                '<(SHARED_LIB_DIR)/libvisualbench.so',
+              ]}, {
+              'files': [
+                '<(SHARED_LIB_DIR)/libvisualbench.so',
+             ]}
+           ],
+          ],
+        },
+      ],
+    },
+    {
+      'target_name': 'VisualBenchSDL_APK',
+      'type': 'none',
+      'dependencies': [
+        'CopyVisualBenchSDLDeps',
+      ],
+      'actions': [
+        {
+          'action_name': 'SkiaVisualBenchSDL_apk',
+          'inputs': [
+            '<(android_base)/apps/visualbenchsdl/src/main/AndroidManifest.xml',
+            '<(android_base)/apps/visualbenchsdl/src/main/java/org/libsdl/app/SDLActivity.java',
+            '<(android_base)/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchActivity.java',
+            '<(android_base)/apps/visualbenchsdl/src/main/libs/<(android_arch)/libvisualbench.so',
+          ],
+          'conditions': [
+            [ 'skia_shared_lib', {
+              'inputs': [
+                '<(android_base)/apps/visualbenchsdl/src/main/libs/<(android_arch)/libskia_android.so',
+              ],
+            }],
+          ],
+          'outputs': [
+            '<(android_base)/apps/visualbenchsdl/build/outputs/apk/visualbench-<(android_variant)-<(android_apk_suffix)',
+          ],
+          'action': [
+            '<(android_base)/apps/gradlew',
+            ':visualbenchsdl:assemble<(android_variant)<(android_buildtype)',
+            '-p<(android_base)/apps/visualbenchsdl',
+            '-PsuppressNativeBuild',
+          ],
+        },
+      ],
+    },
   ],
 }