Silly filepicker

src/jni_driver.cpp

@@ -7,6 +7,7 @@
 
 std::unique_ptr<Emulator> emulator = nullptr;
 RendererGL* renderer = nullptr;
+bool romLoaded = false;
 
 extern "C" JNIEXPORT void JNICALL Java_com_panda3ds_pandroid_AlberDriver_Initialize(JNIEnv* env, jobject obj) {
     emulator = std::make_unique<Emulator>();
@@ -20,8 +21,6 @@ extern "C" JNIEXPORT void JNICALL Java_com_panda3ds_pandroid_AlberDriver_Initial
 	}
     __android_log_print(ANDROID_LOG_INFO, "AlberDriver", "OpenGL ES %d.%d", GLVersion.major, GLVersion.minor);
 	emulator->initGraphicsContext(nullptr);
-    // girlboss it for now :3
-    emulator->loadROM("/data/data/com.panda3ds.pandroid/files/rom.3ds");
 }
 
 extern "C" JNIEXPORT void JNICALL Java_com_panda3ds_pandroid_AlberDriver_RunFrame(JNIEnv* env, jobject obj, jint fbo) {
@@ -33,4 +32,15 @@ extern "C" JNIEXPORT void JNICALL Java_com_panda3ds_pandroid_AlberDriver_RunFram
 extern "C" JNIEXPORT void JNICALL Java_com_panda3ds_pandroid_AlberDriver_Finalize(JNIEnv* env, jobject obj) {
     emulator = nullptr;
     renderer = nullptr;
+}
+
+extern "C" JNIEXPORT jboolean JNICALL Java_com_panda3ds_pandroid_AlberDriver_HasRomLoaded(JNIEnv* env, jobject obj) {
+    return romLoaded;
+}
+
+extern "C" JNIEXPORT void JNICALL Java_com_panda3ds_pandroid_AlberDriver_LoadRom(JNIEnv* env, jobject obj, jstring path) {
+    const char* pathStr = env->GetStringUTFChars(path, nullptr);
+    __android_log_print(ANDROID_LOG_INFO, "AlberDriver", "Loading ROM %s", pathStr);
+    romLoaded = emulator->loadROM(pathStr);
+    env->ReleaseStringUTFChars(path, pathStr);
 }

src/pandroid/app/src/main/AndroidManifest.xml

@@ -22,5 +22,5 @@
             </intent-filter>
         </activity>
     </application>
-
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" tools:ignore="ScopedStorage"/>
 </manifest>

src/pandroid/app/src/main/java/com/panda3ds/pandroid/AlberDriver.java

@@ -8,6 +8,8 @@ public class AlberDriver {
 
     public static native void Initialize();
     public static native void RunFrame(int fbo);
+    public static native boolean HasRomLoaded();
+    public static native void LoadRom(String path);
     public static native void Finalize();
 
     static {

src/pandroid/app/src/main/java/com/panda3ds/pandroid/MainActivity.java

@@ -1,21 +1,67 @@
 package com.panda3ds.pandroid;
 
 import androidx.appcompat.app.AppCompatActivity;
+import static android.provider.Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION;
 
+import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.WindowInsets;
 import android.view.View;
+import android.os.Environment;
+import android.widget.Toast;
+import android.widget.FrameLayout;
+import com.panda3ds.pandroid.PathUtils;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
 public class MainActivity extends AppCompatActivity {
 
     PandaGlSurfaceView glView;
 
+    private static final int PICK_3DS_ROM = 2;
+
+    private void openFile() {
+        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
+        intent.addCategory(Intent.CATEGORY_OPENABLE);
+        intent.setType("*/*");
+        startActivityForResult(intent, PICK_3DS_ROM);
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-
+        if (!Environment.isExternalStorageManager()) {
+            Intent intent = new Intent(ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION);
+            startActivity(intent);
+        }
+        
         glView = new PandaGlSurfaceView(this);
         setContentView(glView);
+        FloatingActionButton fab = new FloatingActionButton(this);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                openFile();
+            }
+        });
+        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(200, 200);
+        addContentView(fab, params);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode == PICK_3DS_ROM) {
+            if (resultCode == RESULT_OK) {
+                String path = PathUtils.getPath(getApplicationContext(), data.getData());
+                Toast.makeText(getApplicationContext(), "pandroid opening " + path, Toast.LENGTH_LONG).show();
+                glView.queueEvent(new Runnable() {
+                    @Override
+                    public void run() {
+                        AlberDriver.LoadRom(path);
+                    }
+                });
+            }
+        }
     }
 }

src/pandroid/app/src/main/java/com/panda3ds/pandroid/PandaGlRenderer.java

@@ -62,12 +62,12 @@ public class PandaGlRenderer implements GLSurfaceView.Renderer {
     }
 
     public void onDrawFrame(GL10 unused) {
-        AlberDriver.RunFrame(screenFbo);
-        // is this needed? prob not
-        glBindTexture(GL_TEXTURE_2D, 0);
-        glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
-        glBindFramebuffer(GL_READ_FRAMEBUFFER, screenFbo);
-        glBlitFramebuffer(0, 0, 400, 480, 0, 0, screenWidth, screenHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
+        if (AlberDriver.HasRomLoaded()) {
+            AlberDriver.RunFrame(screenFbo);
+            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+            glBindFramebuffer(GL_READ_FRAMEBUFFER, screenFbo);
+            glBlitFramebuffer(0, 0, 400, 480, 0, 0, screenWidth, screenHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
+        }
     }
 
     public void onSurfaceChanged(GL10 unused, int width, int height) {

src/pandroid/app/src/main/java/com/panda3ds/pandroid/PathUtils.java

@@ -0,0 +1,125 @@
+package com.panda3ds.pandroid;
+
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+
+public class PathUtils {
+
+    public static String getPath(final Context context, final Uri uri) {
+
+        // DocumentProvider
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, uri)) {
+
+            if (isExternalStorageDocument(uri)) {// ExternalStorageProvider
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+                String storageDefinition;
+
+
+                if("primary".equalsIgnoreCase(type)){
+
+                    return Environment.getExternalStorageDirectory() + "/" + split[1];
+
+                } else {
+
+                    if(Environment.isExternalStorageRemovable()){
+                        storageDefinition = "EXTERNAL_STORAGE";
+
+                    } else{
+                        storageDefinition = "SECONDARY_STORAGE";
+                    }
+
+                    return System.getenv(storageDefinition) + "/" + split[1];
+                }
+            
+            } else if (isDownloadsDocument(uri)) {// DownloadsProvider
+
+                final String id = DocumentsContract.getDocumentId(uri);
+                final Uri contentUri = ContentUris.withAppendedId(
+                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
+
+                return getDataColumn(context, contentUri, null, null);
+
+            } else if (isMediaDocument(uri)) {// MediaProvider
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                Uri contentUri = null;
+                if ("image".equals(type)) {
+                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+                } else if ("video".equals(type)) {
+                contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
+                } else if ("audio".equals(type)) {
+                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
+                }
+
+                final String selection = "_id=?";
+                final String[] selectionArgs = new String[]{
+                        split[1]
+                };
+
+                return getDataColumn(context, contentUri, selection, selectionArgs);
+            }
+
+        } else if ("content".equalsIgnoreCase(uri.getScheme())) {// MediaStore (and general)
+
+            // Return the remote address
+            if (isGooglePhotosUri(uri))
+                return uri.getLastPathSegment();
+
+            return getDataColumn(context, uri, null, null);
+
+        } else if ("file".equalsIgnoreCase(uri.getScheme())) {// File
+            return uri.getPath();
+        }
+
+        return null;
+    }
+
+    public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
+
+        Cursor cursor = null;
+        final String column = "_data";
+        final String[] projection = {
+                column
+        };
+
+        try {
+            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
+            if (cursor != null && cursor.moveToFirst()) {
+                final int column_index = cursor.getColumnIndexOrThrow(column);
+                return cursor.getString(column_index);
+            }
+        } finally {
+            if (cursor != null)
+                cursor.close();
+        }
+        return null;
+    }
+
+
+    public static boolean isExternalStorageDocument(Uri uri) {
+        return "com.android.externalstorage.documents".equals(uri.getAuthority());
+    }
+
+
+    public static boolean isDownloadsDocument(Uri uri) {
+        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+    }
+
+    public static boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+
+    public static boolean isGooglePhotosUri(Uri uri) {
+        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
+    }
+}