Import initial work on Android frontend

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.github.stenzek.duckstation">
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme"
+        android:requestLegacyExternalStorage="true">
+        <activity
+            android:name=".EmulationActivity"
+            android:configChanges="orientation|keyboardHidden|screenSize"
+            android:label="@string/title_activity_emulation"
+            android:parentActivityName=".MainActivity"
+            android:theme="@style/FullscreenTheme">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="com.github.stenzek.duckstation.MainActivity" />
+        </activity>
+        <activity
+            android:name=".SettingsActivity"
+            android:label="@string/title_activity_settings"
+            android:parentActivityName=".MainActivity">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="com.github.stenzek.duckstation.MainActivity" />
+        </activity>
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

android/app/src/main/java/com/github/stenzek/duckstation/AndroidHostInterface.java

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+package com.github.stenzek.duckstation;
+
+import android.view.Surface;
+
+public class AndroidHostInterface
+{
+    private long nativePointer;
+
+    static {
+        System.loadLibrary("duckstation-native");
+    }
+
+    static public native AndroidHostInterface create();
+
+    public AndroidHostInterface(long nativePointer)
+    {
+        this.nativePointer = nativePointer;
+    }
+
+    public native boolean isEmulationThreadRunning();
+    public native boolean startEmulationThread(Surface surface, String filename, String state_filename);
+    public native void stopEmulationThread();
+
+    public native void surfaceChanged(Surface surface, int format, int width, int height);
+}

android/app/src/main/java/com/github/stenzek/duckstation/EmulationActivity.java

@@ -0,0 +1,216 @@
+package com.github.stenzek.duckstation;
+
+import android.annotation.SuppressLint;
+
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.os.Handler;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.View;
+import android.view.MenuItem;
+
+import androidx.core.app.NavUtils;
+
+/**
+ * An example full-screen activity that shows and hides the system UI (i.e.
+ * status bar and navigation/system bar) with user interaction.
+ */
+public class EmulationActivity extends AppCompatActivity implements SurfaceHolder.Callback {
+    /** Interface to the native emulator core */
+    AndroidHostInterface mHostInterface;
+
+    /**
+     * Whether or not the system UI should be auto-hidden after
+     * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
+     */
+    private static final boolean AUTO_HIDE = true;
+
+    /**
+     * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
+     * user interaction before hiding the system UI.
+     */
+    private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
+
+    /**
+     * Some older devices needs a small delay between UI widget updates
+     * and a change of the status and navigation bar.
+     */
+    private static final int UI_ANIMATION_DELAY = 300;
+    private final Handler mHideHandler = new Handler();
+    private SurfaceView mContentView;
+    private final Runnable mHidePart2Runnable = new Runnable() {
+        @SuppressLint("InlinedApi")
+        @Override
+        public void run() {
+            // Delayed removal of status and navigation bar
+
+            // Note that some of these constants are new as of API 16 (Jelly Bean)
+            // and API 19 (KitKat). It is safe to use them, as they are inlined
+            // at compile-time and do nothing on earlier devices.
+            mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
+                    | View.SYSTEM_UI_FLAG_FULLSCREEN
+                    | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+        }
+    };
+    private final Runnable mShowPart2Runnable = new Runnable() {
+        @Override
+        public void run() {
+            // Delayed display of UI elements
+            ActionBar actionBar = getSupportActionBar();
+            if (actionBar != null) {
+                actionBar.show();
+            }
+        }
+    };
+    private boolean mVisible;
+    private final Runnable mHideRunnable = new Runnable() {
+        @Override
+        public void run() {
+            hide();
+        }
+    };
+    /**
+     * Touch listener to use for in-layout UI controls to delay hiding the
+     * system UI. This is to prevent the jarring behavior of controls going away
+     * while interacting with activity UI.
+     */
+    private final View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
+        @Override
+        public boolean onTouch(View view, MotionEvent motionEvent) {
+            if (AUTO_HIDE) {
+                delayedHide(AUTO_HIDE_DELAY_MILLIS);
+            }
+            return false;
+        }
+    };
+
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+    }
+
+    @Override
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+        // Once we get a surface, we can boot.
+        if (mHostInterface.isEmulationThreadRunning()) {
+            mHostInterface.surfaceChanged(holder.getSurface(), format, width, height);
+            return;
+        }
+
+        String filename = new String();
+        String state_filename = new String();
+        if (!mHostInterface.startEmulationThread(holder.getSurface(),filename, state_filename))
+        {
+            Log.e("EmulationActivity", "Failed to start emulation thread");
+            return;
+        }
+    }
+
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+        if (!mHostInterface.isEmulationThreadRunning())
+            return;
+
+        Log.i("EmulationActivity", "Stopping emulation thread");
+        mHostInterface.stopEmulationThread();
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.activity_emulation);
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+        }
+
+        mVisible = true;
+        mContentView = (SurfaceView)findViewById(R.id.fullscreen_content);
+        Log.e("EmulationActivity", "adding callback");
+        mContentView.getHolder().addCallback(this);
+
+
+        // Set up the user interaction to manually show or hide the system UI.
+        mContentView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                toggle();
+            }
+        });
+
+        mHostInterface = AndroidHostInterface.create();
+        if (mHostInterface == null)
+            throw new InstantiationError("Failed to create host interface");
+    }
+
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+
+        // Trigger the initial hide() shortly after the activity has been
+        // created, to briefly hint to the user that UI controls
+        // are available.
+        delayedHide(100);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        int id = item.getItemId();
+        if (id == android.R.id.home) {
+            // This ID represents the Home or Up button.
+            NavUtils.navigateUpFromSameTask(this);
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    private void toggle() {
+        if (mVisible) {
+            hide();
+        } else {
+            show();
+        }
+    }
+
+    private void hide() {
+        // Hide UI first
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.hide();
+        }
+        mVisible = false;
+
+        // Schedule a runnable to remove the status and navigation bar after a delay
+        mHideHandler.removeCallbacks(mShowPart2Runnable);
+        mHideHandler.postDelayed(mHidePart2Runnable, UI_ANIMATION_DELAY);
+    }
+
+    @SuppressLint("InlinedApi")
+    private void show() {
+        // Show the system bar
+        mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
+        mVisible = true;
+
+        // Schedule a runnable to display UI elements after a delay
+        mHideHandler.removeCallbacks(mHidePart2Runnable);
+        mHideHandler.postDelayed(mShowPart2Runnable, UI_ANIMATION_DELAY);
+    }
+
+    /**
+     * Schedules a call to hide() in delay milliseconds, canceling any
+     * previously scheduled calls.
+     */
+    private void delayedHide(int delayMillis) {
+        mHideHandler.removeCallbacks(mHideRunnable);
+        mHideHandler.postDelayed(mHideRunnable, delayMillis);
+    }
+}

android/app/src/main/java/com/github/stenzek/duckstation/MainActivity.java

@@ -0,0 +1,85 @@
+package com.github.stenzek.duckstation;
+
+import android.Manifest;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.snackbar.Snackbar;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import android.content.Intent;
+import android.view.View;
+import android.view.Menu;
+import android.view.MenuItem;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        FloatingActionButton fab = findViewById(R.id.fab);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                /*Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                        .setAction("Action", null).show();*/
+                startEmulation("nonexistant.cue");
+            }
+        });
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+            Intent intent = new Intent(this, SettingsActivity.class);
+            startActivity(intent);
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+    private boolean checkForExternalStoragePermissions() {
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED &&
+                ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
+        {
+            return true;
+        }
+
+        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}, 0);
+        return false;
+    }
+
+    private boolean startEmulation(String bootPath) {
+        if (!checkForExternalStoragePermissions()) {
+            Snackbar.make(findViewById(R.id.fab), "External storage permissions are required to start emulation.", Snackbar.LENGTH_LONG);
+            return false;
+        }
+        Intent intent = new Intent(this, EmulationActivity.class);
+        intent.putExtra("bootPath", bootPath);
+        startActivity(intent);
+        return true;
+    }
+}

android/app/src/main/java/com/github/stenzek/duckstation/NativeLibrary.java

@@ -0,0 +1,12 @@
+package com.github.stenzek.duckstation;
+
+public class NativeLibrary {
+    static
+    {
+        System.loadLibrary("duckstation-native");
+    }
+
+    public native boolean createSystem();
+    public native boolean bootSystem(String filename, String stateFilename);
+    public native void runFrame();
+}

android/app/src/main/java/com/github/stenzek/duckstation/SettingsActivity.java

@@ -0,0 +1,31 @@
+package com.github.stenzek.duckstation;
+
+import android.os.Bundle;
+
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.preference.PreferenceFragmentCompat;
+
+public class SettingsActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.settings_activity);
+        getSupportFragmentManager()
+                .beginTransaction()
+                .replace(R.id.settings, new SettingsFragment())
+                .commit();
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+        }
+    }
+
+    public static class SettingsFragment extends PreferenceFragmentCompat {
+        @Override
+        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+            setPreferencesFromResource(R.xml.root_preferences, rootKey);
+        }
+    }
+}

android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

android/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#008577"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

android/app/src/main/res/layout/activity_emulation.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#0099cc"
+    tools:context=".EmulationActivity">
+
+    <!-- The primary full-screen view. This can be replaced with whatever view
+         is needed to present your content, e.g. VideoView, SurfaceView,
+         TextureView, etc. -->
+    <SurfaceView
+        android:id="@+id/fullscreen_content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:keepScreenOn="true" />
+
+</FrameLayout>

android/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:theme="@style/AppTheme.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/AppTheme.PopupOverlay" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <include layout="@layout/content_main"/>
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/fab_margin"
+        app:srcCompat="@android:drawable/ic_dialog_email" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

android/app/src/main/res/layout/content_main.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:showIn="@layout/activity_main"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

android/app/src/main/res/layout/settings_activity.xml

@@ -0,0 +1,9 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <FrameLayout
+        android:id="@+id/settings"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</LinearLayout>

android/app/src/main/res/menu/menu_main.xml

@@ -0,0 +1,9 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context="com.github.stenzek.duckstation.MainActivity" >
+    <item android:id="@+id/action_settings"
+        android:title="@string/action_settings"
+        android:orderInCategory="100"
+        app:showAsAction="never" />
+</menu>

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

android/app/src/main/res/values/arrays.xml

@@ -0,0 +1,68 @@
+<resources>
+    <string-array name="settings_console_region_entries">
+        <item>Auto-Detect</item>
+        <item>NTSC-J (Japan)</item>
+        <item>NTSC-U (US)</item>
+        <item>PAL (Europe, Australia)</item>
+    </string-array>
+    <string-array name="settings_console_region_values">
+        <item>Auto</item>
+        <item>NTSC-J</item>
+        <item>NTSC-U</item>
+        <item>PAL</item>
+    </string-array>
+    <string-array name="settings_cpu_execution_mode_entries">
+        <item>Interpreter (Slowest)</item>
+        <item>Cached Interpreter (Faster)</item>
+        <item>Recompiler (Fastest)</item>
+    </string-array>
+    <string-array name="settings_cpu_execution_mode_values">
+        <item>Interpreter</item>
+        <item>CachedInterpreter</item>
+        <item>Recompiler</item>
+    </string-array>
+    <string-array name="gpu_renderer_entries">
+        <item>Hardware (OpenGL)</item>
+        <item>Software</item>
+    </string-array>
+    <string-array name="gpu_renderer_values">
+        <item>OpenGL</item>
+        <item>Software</item>
+    </string-array>
+    <string-array name="settings_gpu_resolution_scale_entries">
+        <item>1x (1024x512)</item>
+        <item>2x (2048x1024)</item>
+        <item>3x (3072x1536)</item>
+        <item>4x (4096x2048)</item>
+        <item>5x (5120x2560)</item>
+        <item>6x (6144x3072)</item>
+        <item>7x (7168x3584)</item>
+        <item>8x (8192x4096)</item>
+        <item>9x (9216x4608)</item>
+        <item>10x (10240x5120)</item>
+        <item>11x (11264x5632)</item>
+        <item>12x (12288x6144)</item>
+        <item>13x (13312x6656)</item>
+        <item>14x (14336x7168)</item>
+        <item>15x (15360x7680)</item>
+        <item>16x (16384x8192)</item>
+    </string-array>
+    <string-array name="settings_gpu_resolution_scale_values">
+        <item>1</item>
+        <item>2</item>
+        <item>3</item>
+        <item>4</item>
+        <item>5</item>
+        <item>6</item>
+        <item>7</item>
+        <item>8</item>
+        <item>9</item>
+        <item>10</item>
+        <item>11</item>
+        <item>12</item>
+        <item>13</item>
+        <item>14</item>
+        <item>15</item>
+        <item>16</item>
+    </string-array>
+</resources>

android/app/src/main/res/values/attrs.xml

@@ -0,0 +1,12 @@
+<resources>
+
+    <!-- Declare custom theme attributes that allow changing which styles are
+         used for button bars depending on the API level.
+         ?android:attr/buttonBarStyle is new as of API 11 so this is
+         necessary to support previous API levels. -->
+    <declare-styleable name="ButtonBarContainerTheme">
+        <attr name="metaButtonBarStyle" format="reference" />
+        <attr name="metaButtonBarButtonStyle" format="reference" />
+    </declare-styleable>
+
+</resources>

android/app/src/main/res/values/colors.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+
+    <color name="black_overlay">#66000000</color>
+</resources>

android/app/src/main/res/values/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="fab_margin">16dp</dimen>
+</resources>

android/app/src/main/res/values/strings.xml

@@ -0,0 +1,42 @@
+<resources>
+    <string name="app_name">DuckStation</string>
+    <string name="action_settings">Settings</string>
+    <string name="title_activity_settings">Settings</string>
+
+    <!-- Preference Titles -->
+    <string name="settings_console_header">Console</string>
+    <string name="settings_behavior_header">Behavior</string>
+    <string name="settings_host_synchronization_header">Host Synchronization</string>
+    <string name="settings_cpu_header">CPU</string>
+    <string name="settings_gpu_header">GPU</string>
+
+    <!-- Console Preferences -->
+    <string name="settings_console_region">Region</string>
+    <string name="settings_console_region_default">Auto</string>
+    <string name="settings_console_bios_path">BIOS Path</string>
+    <string name="settings_console_tty_output">Enable TTY Output</string>
+    <string name="settings_console_fast_boot">Fast Boot</string>
+
+    <!-- Behavior Preferences -->
+    <string name="settings_behavior_enable_speed_limiter">Enable Speed Limiter</string>
+    <string name="settings_behavior_pause_on_start">Pause On Start</string>
+
+    <!-- Host Synchronization Preferences -->
+    <string name="settings_host_synchronization_sync_to_audio">Sync To Audio</string>
+    <string name="settings_host_synchronization_sync_to_video">Sync To Video</string>
+
+    <!-- CPU Preferences -->
+    <string name="settings_cpu_execution_mode">Execution Mode</string>
+    <string name="settings_cpu_execution_mode_default">Interpreter</string>
+
+    <!-- GPU Preferences -->
+    <string name="settings_gpu_renderer">Renderer</string>
+    <string name="settings_gpu_renderer_default">OpenGL</string>
+    <string name="settings_gpu_display_linear_filtering">Display Linear Filtering</string>
+    <string name="settings_gpu_resolution_scale">Resolution Scale</string>
+    <string name="settings_gpu_true_color">True 24-Bit Color (Disables Dithering)</string>
+
+    <string name="title_activity_emulation">EmulationActivity</string>
+    <string name="dummy_button">Dummy Button</string>
+    <string name="dummy_content">DUMMY\nCONTENT</string>
+</resources>

android/app/src/main/res/values/styles.xml

@@ -0,0 +1,32 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+
+    <style name="FullscreenTheme" parent="AppTheme">
+        <item name="android:actionBarStyle">@style/FullscreenActionBarStyle</item>
+        <item name="android:windowActionBarOverlay">true</item>
+        <item name="android:windowBackground">@null</item>
+        <item name="metaButtonBarStyle">?android:attr/buttonBarStyle</item>
+        <item name="metaButtonBarButtonStyle">?android:attr/buttonBarButtonStyle</item>
+    </style>
+
+    <style name="FullscreenActionBarStyle" parent="Widget.AppCompat.ActionBar">
+        <item name="android:background">@color/black_overlay</item>
+    </style>
+
+</resources>

android/app/src/main/res/xml/root_preferences.xml

@@ -0,0 +1,104 @@
+<!--
+  ~ Copyright 2018 The app Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <PreferenceCategory app:title="@string/settings_console_header">
+
+        <ListPreference
+            app:key="Console/Region"
+            app:title="@string/settings_console_region"
+            app:entries="@array/settings_console_region_entries"
+            app:entryValues="@array/settings_console_region_values"
+            app:defaultValue="@string/settings_console_region_default"
+            app:useSimpleSummaryProvider="true" />
+
+        <EditTextPreference
+            app:key="BIOS/Path"
+            app:title="@string/settings_console_bios_path"
+            app:useSimpleSummaryProvider="true" />
+
+        <SwitchPreferenceCompat
+            app:key="BIOS/PatchTTYEnable"
+            app:title="@string/settings_console_tty_output"
+            app:useSimpleSummaryProvider="true" />
+
+        <SwitchPreferenceCompat
+            app:key="BIOS/PatchFastBoot"
+            app:title="@string/settings_console_fast_boot"
+            app:useSimpleSummaryProvider="true" />
+
+    </PreferenceCategory>
+
+    <PreferenceCategory app:title="@string/settings_behavior_header">
+        <SwitchPreferenceCompat
+            app:key="General/SpeedLimiterEnabled"
+            app:title="@string/settings_behavior_enable_speed_limiter"
+            app:useSimpleSummaryProvider="true" />
+        <SwitchPreferenceCompat
+            app:key="General/StartPaused"
+            app:title="@string/settings_behavior_pause_on_start"
+            app:useSimpleSummaryProvider="true" />
+        <SwitchPreferenceCompat
+            app:key="General/SyncToAudio"
+            app:title="@string/settings_host_synchronization_sync_to_audio"
+            app:defaultValue="true"
+            app:useSimpleSummaryProvider="true" />
+        <SwitchPreferenceCompat
+            app:key="General/SyncToVideo"
+            app:title="@string/settings_host_synchronization_sync_to_video"
+            app:defaultValue="true"
+            app:useSimpleSummaryProvider="true" />
+    </PreferenceCategory>
+
+    <PreferenceCategory app:title="@string/settings_cpu_header">
+        <ListPreference
+            app:key="CPU/ExecutionMode"
+            app:title="@string/settings_cpu_execution_mode"
+            app:entries="@array/settings_cpu_execution_mode_entries"
+            app:entryValues="@array/settings_cpu_execution_mode_values"
+            app:defaultValue="@string/settings_cpu_execution_mode_default"
+            app:useSimpleSummaryProvider="true" />
+    </PreferenceCategory>
+    <PreferenceCategory app:title="@string/settings_gpu_header">
+
+        <ListPreference
+            app:key="GPU/Renderer"
+            app:title="@string/settings_gpu_renderer"
+            app:entries="@array/gpu_renderer_entries"
+            app:entryValues="@array/gpu_renderer_values"
+            app:defaultValue="@string/settings_gpu_renderer_default"/>
+
+        <ListPreference
+            app:key="GPU/ResolutionScale"
+            app:title="@string/settings_gpu_resolution_scale"
+            app:entries="@array/settings_gpu_resolution_scale_entries"
+            app:entryValues="@array/settings_gpu_resolution_scale_values"
+            app:defaultValue="@string/settings_gpu_renderer_default"/>
+        <SwitchPreferenceCompat
+            app:key="GPU/TrueColor"
+            app:title="@string/settings_gpu_true_color"
+            app:defaultValue="true"/>
+
+        <SwitchPreferenceCompat
+            app:key="Display/LinearFiltering"
+            app:title="@string/settings_gpu_display_linear_filtering"
+            app:defaultValue="true"/>
+
+    </PreferenceCategory>
+
+</PreferenceScreen>