Android: Add manual disc change from file

android/app/src/cpp/android_host_interface.cpp

@@ -1504,3 +1504,21 @@ DEFINE_JNI_ARGS_METHOD(jboolean, AndroidHostInterface_setMediaPlaylistIndex, job
 
   return true;
 }
+
+DEFINE_JNI_ARGS_METHOD(jboolean, AndroidHostInterface_setMediaFilename, jstring obj, jstring filename)
+{
+  if (!System::IsValid() || !filename)
+    return false;
+
+  std::string filename_str(AndroidHelpers::JStringToString(env, filename));
+  AndroidHostInterface* hi = AndroidHelpers::GetNativeClass(env, obj);
+  hi->RunOnEmulationThread([filename_str, hi]() {
+    if (System::IsValid())
+    {
+      if (!System::InsertMedia(filename_str.c_str()))
+        hi->AddOSDMessage("Disc switch failed. Please make sure the file exists and is a supported disc image.");
+    }
+  });
+
+  return true;
+}

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

@@ -124,6 +124,8 @@ public class AndroidHostInterface {
 
     public native boolean setMediaPlaylistIndex(int index);
 
+    public native boolean setMediaFilename(String filename);
+
     static {
         System.loadLibrary("duckstation-native");
     }

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

@@ -300,8 +300,19 @@ public class EmulationActivity extends AppCompatActivity implements SurfaceHolde
                 applySettings();
             }
         } else if (requestCode == REQUEST_IMPORT_PATCH_CODES) {
-            if (data != null)
+            if (data == null)
+                return;
+
             importPatchesFromFile(data.getData());
+        } else if (requestCode == REQUEST_CHANGE_DISC_FILE) {
+            if (data == null)
+                return;
+
+            String path = GameDirectoriesActivity.getPathFromUri(this, data.getData());
+            if (path == null)
+                return;
+
+            AndroidHostInterface.getInstance().setMediaFilename(path);
         }
     }
 
@@ -378,6 +389,7 @@ public class EmulationActivity extends AppCompatActivity implements SurfaceHolde
 
     private static final int REQUEST_CODE_SETTINGS = 0;
     private static final int REQUEST_IMPORT_PATCH_CODES = 1;
+    private static final int REQUEST_CHANGE_DISC_FILE = 2;
 
     private void onMenuClosed() {
         enableFullscreenImmersive();
@@ -560,21 +572,27 @@ public class EmulationActivity extends AppCompatActivity implements SurfaceHolde
     private void showDiscChangeMenu() {
         final String[] paths = AndroidHostInterface.getInstance().getMediaPlaylistPaths();
         final int currentPath = AndroidHostInterface.getInstance().getMediaPlaylistIndex();
-        if (paths == null) {
+        final int numPaths = (paths != null) ? paths.length : 0;
-            onMenuClosed();
-            return;
-        }
 
         AlertDialog.Builder builder = new AlertDialog.Builder(this);
 
-        CharSequence[] items = new CharSequence[paths.length];
+        CharSequence[] items = new CharSequence[numPaths + 1];
-        for (int i = 0; i < paths.length; i++)
+        for (int i = 0; i < numPaths; i++)
             items[i] = GameListEntry.getFileNameForPath(paths[i]);
+        items[numPaths] = "Select New File...";
 
-        builder.setSingleChoiceItems(items, currentPath, (dialogInterface, i) -> {
+        builder.setSingleChoiceItems(items, (currentPath < numPaths) ? currentPath : -1, (dialogInterface, i) -> {
-            AndroidHostInterface.getInstance().setMediaPlaylistIndex(i);
             dialogInterface.dismiss();
             onMenuClosed();
+
+            if (i < numPaths) {
+                AndroidHostInterface.getInstance().setMediaPlaylistIndex(i);
+            } else {
+                Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+                intent.setType("*/*");
+                intent.addCategory(Intent.CATEGORY_OPENABLE);
+                startActivityForResult(Intent.createChooser(intent, getString(R.string.main_activity_choose_disc_image)), REQUEST_CHANGE_DISC_FILE);
+            }
         });
         builder.setOnCancelListener(dialogInterface -> onMenuClosed());
         builder.create().show();

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

@@ -235,6 +235,22 @@ public class GameDirectoriesActivity extends AppCompatActivity {
         return path;
     }
 
+    public static String getPathFromUri(Context context, Uri uri) {
+        String path = FileUtil.getFullPathFromUri(uri, context);
+        if (path.length() < 5) {
+            new AlertDialog.Builder(context)
+                    .setTitle(R.string.main_activity_error)
+                    .setMessage(R.string.main_activity_get_path_from_file_error)
+                    .setPositiveButton(R.string.main_activity_ok, (dialog, button) -> {
+                    })
+                    .create()
+                    .show();
+            return null;
+        }
+
+        return path;
+    }
+
     public static void addSearchDirectory(Context context, String path, boolean recursive) {
         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         final String key = recursive ? "GameList/RecursivePaths" : "GameList/Paths";

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

@@ -242,22 +242,6 @@ public class MainActivity extends AppCompatActivity {
         return super.onOptionsItemSelected(item);
     }
 
-    private String getPathFromUri(Uri uri) {
-        String path = FileUtil.getFullPathFromUri(uri, this);
-        if (path.length() < 5) {
-            new AlertDialog.Builder(this)
-                    .setTitle(R.string.main_activity_error)
-                    .setMessage(R.string.main_activity_get_path_from_file_error)
-                    .setPositiveButton(R.string.main_activity_ok, (dialog, button) -> {
-                    })
-                    .create()
-                    .show();
-            return null;
-        }
-
-        return path;
-    }
-
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
@@ -288,7 +272,7 @@ public class MainActivity extends AppCompatActivity {
                 if (resultCode != RESULT_OK)
                     return;
 
-                String path = getPathFromUri(data.getData());
+                String path = GameDirectoriesActivity.getPathFromUri(this, data.getData());
                 if (path == null)
                     return;