Add KernelSU Live FPS Module and Build Workflow

.github/workflows/build-ksu.yml

@@ -0,0 +1,40 @@
+name: Build KernelSU Module
+
+on:
+  push:
+    branches: [ ksu-module ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Install Build Tools and Platforms
+        run: |
+          sdkmanager "build-tools;33.0.0" "platforms;android-33"
+
+      - name: Build Module
+        run: |
+          cd ksu-module
+          chmod +x build.sh
+          ./build.sh
+
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: fox_live_fps
+          path: ksu-module/fox_live_fps.zip
+          retention-days: 30

ksu-module/build.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+# Ensure you have the Android SDK installed for javac and d8
+
+# 1. Compile the Java source against the Android framework
+javac -cp $ANDROID_HOME/platforms/android-33/android.jar fox/fps/FpsOverlay.java
+
+# 2. Convert to DEX bytecode
+$ANDROID_HOME/build-tools/33.0.0/d8 fox/fps/FpsOverlay.class --output .
+
+# 3. Rename and package the KSU module
+mv classes.dex fps_overlay.dex
+zip -r fox_live_fps.zip module.prop service.sh fps_overlay.dex
+
+echo "Done. Flash fox_live_fps.zip in KernelSU, bitch."

ksu-module/fox/fps/FpsOverlay.java

@@ -0,0 +1,74 @@
+package fox.fps;
+
+import android.app.ActivityThread;
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.PixelFormat;
+import android.os.Handler;
+import android.os.Looper;
+import android.view.Gravity;
+import android.view.WindowManager;
+import android.widget.TextView;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+public class FpsOverlay {
+    public static void main(String[] args) {
+        Looper.prepare();
+        try {
+            // Grab the system context directly from ActivityThread
+            ActivityThread thread = ActivityThread.systemMain();
+            Context context = thread.getSystemContext();
+            WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+
+            TextView tv = new TextView(context);
+            tv.setText("FPS: --");
+            tv.setTextColor(Color.GREEN);
+            tv.setTextSize(18f);
+            tv.setBackgroundColor(Color.argb(150, 0, 0, 0));
+            tv.setPadding(15, 10, 15, 10);
+
+            WindowManager.LayoutParams params = new WindowManager.LayoutParams(
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    2015, // TYPE_SECURE_SYSTEM_OVERLAY - bypasses draw-over-apps permission
+                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
+                    WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE |
+                    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
+                    PixelFormat.TRANSLUCENT
+            );
+            params.gravity = Gravity.TOP | Gravity.LEFT;
+            params.x = 50;
+            params.y = 50;
+
+            wm.addView(tv, params);
+
+            Handler handler = new Handler();
+            Runnable updateFps = new Runnable() {
+                @Override
+                public void run() {
+                    tv.setText("FPS: " + getFps());
+                    handler.postDelayed(this, 500);
+                }
+            };
+            handler.post(updateFps);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        Looper.loop();
+    }
+
+    private static String getFps() {
+        try {
+            // Standard Qualcomm DRM sysfs node. 
+            Process p = Runtime.getRuntime().exec(new String[]{"sh", "-c", "cat /sys/class/drm/sde-crtc-*/measured_fps | head -n 1"});
+            BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
+            String line = reader.readLine();
+            if (line != null && !line.trim().isEmpty()) {
+                return line.trim().split(" ")[0];
+            }
+        } catch (Exception e) {}
+        return "N/A";
+    }
+}

ksu-module/module.prop

@@ -0,0 +1,6 @@
+id=fox_live_fps
+name=Live FPS Overlay
+version=v1.0
+versionCode=1
+author=Fox
+description=Displays a live FPS overlay using app_process.

ksu-module/service.sh

@@ -0,0 +1,11 @@
+#!/system/bin/sh
+MODDIR=${0%/*}
+
+# Wait for boot to finish so WindowManager is ready
+while [ "$(getprop sys.boot_completed)" != "1" ]; do
+    sleep 1
+done
+
+# Launch the app_process payload in the background
+export CLASSPATH=$MODDIR/fps_overlay.dex
+app_process /system/bin fox.fps.FpsOverlay &