From 5a2b929aacb948a02f75739678c90bc6181293d9 Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Sun, 6 Oct 2024 19:05:49 +0200
Subject: [PATCH] hack_virtual_display

---
 .../genymobile/scrcpy/video/ScreenCapture.java    |  8 +++++++-
 .../scrcpy/wrappers/DisplayManager.java           | 15 +++++++++++----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/server/src/main/java/com/genymobile/scrcpy/video/ScreenCapture.java b/server/src/main/java/com/genymobile/scrcpy/video/ScreenCapture.java
index 67d325f0..1966b242 100644
--- a/server/src/main/java/com/genymobile/scrcpy/video/ScreenCapture.java
+++ b/server/src/main/java/com/genymobile/scrcpy/video/ScreenCapture.java
@@ -10,6 +10,7 @@ import com.genymobile.scrcpy.wrappers.ServiceManager;
 import com.genymobile.scrcpy.wrappers.SurfaceControl;
 
 import android.graphics.Rect;
+import android.hardware.display.DisplayManager;
 import android.hardware.display.VirtualDisplay;
 import android.os.Build;
 import android.os.IBinder;
@@ -26,6 +27,7 @@ public class ScreenCapture extends SurfaceCapture {
     private final Rect crop;
     private final int lockVideoOrientation;
     private int layerStack;
+    private int dpi;
 
     private Size deviceSize;
     private ScreenInfo screenInfo;
@@ -56,6 +58,7 @@ public class ScreenCapture extends SurfaceCapture {
         screenInfo = ScreenInfo.computeScreenInfo(displayInfo.getRotation(), deviceSize, crop, maxSize, lockVideoOrientation);
         device.setScreenInfo(screenInfo);
         layerStack = displayInfo.getLayerStack();
+        dpi = displayInfo.getLogicalDensityDpi();
 
         if (displayId == 0) {
             rotationWatcher = new IRotationWatcher.Stub() {
@@ -119,8 +122,11 @@ public class ScreenCapture extends SurfaceCapture {
 
         try {
             Rect videoRect = screenInfo.getVideoSize().toRect();
+            int flags = DisplayManager.VIRTUAL_DISPLAY_FLAG_PUBLIC | DisplayManager.VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY | (1
+                    << 6) /* DisplayManager.VIRTUAL_DISPLAY_FLAG_SUPPORT_TOUCH */ | 1 << 8 | 1 << 9 | 1 << 10 | 1 << 11 | 1 << 12 | 1 << 13 | 1 << 14;
+
             virtualDisplay = ServiceManager.getDisplayManager()
-                    .createVirtualDisplay("scrcpy", videoRect.width(), videoRect.height(), displayId, surface);
+                    .createVirtualDisplay("scrcpy", videoRect.width(), videoRect.height(), dpi, surface, flags);
             device.setVirtualDisplayId(virtualDisplay.getDisplay().getDisplayId());
             Ln.d("Display: using DisplayManager API");
         } catch (Exception displayManagerException) {
diff --git a/server/src/main/java/com/genymobile/scrcpy/wrappers/DisplayManager.java b/server/src/main/java/com/genymobile/scrcpy/wrappers/DisplayManager.java
index ad939cbd..ce14e1fb 100644
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/DisplayManager.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/DisplayManager.java
@@ -1,15 +1,18 @@
 package com.genymobile.scrcpy.wrappers;
 
+import com.genymobile.scrcpy.FakeContext;
 import com.genymobile.scrcpy.device.DisplayInfo;
 import com.genymobile.scrcpy.device.Size;
 import com.genymobile.scrcpy.util.Command;
 import com.genymobile.scrcpy.util.Ln;
 
 import android.annotation.SuppressLint;
+import android.content.Context;
 import android.hardware.display.VirtualDisplay;
 import android.view.Display;
 import android.view.Surface;
 
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.util.regex.Matcher;
@@ -117,13 +120,17 @@ public final class DisplayManager {
     private Method getCreateVirtualDisplayMethod() throws NoSuchMethodException {
         if (createVirtualDisplayMethod == null) {
             createVirtualDisplayMethod = android.hardware.display.DisplayManager.class
-                    .getMethod("createVirtualDisplay", String.class, int.class, int.class, int.class, Surface.class);
+                    .getMethod("createVirtualDisplay", String.class, int.class, int.class, int.class, Surface.class, int.class);
         }
         return createVirtualDisplayMethod;
     }
 
-    public VirtualDisplay createVirtualDisplay(String name, int width, int height, int displayIdToMirror, Surface surface) throws Exception {
-        Method method = getCreateVirtualDisplayMethod();
-        return (VirtualDisplay) method.invoke(null, name, width, height, displayIdToMirror, surface);
+    public VirtualDisplay createVirtualDisplay(String name, int width, int height, int dpi, Surface surface, int flags) throws Exception {
+        //Method method = getCreateVirtualDisplayMethod();
+        Constructor<android.hardware.display.DisplayManager> ctor = android.hardware.display.DisplayManager.class.getDeclaredConstructor(Context.class);
+        ctor.setAccessible(true);
+        android.hardware.display.DisplayManager dm = ctor.newInstance(FakeContext.get());
+        return dm.createVirtualDisplay(name, width, height, dpi, surface, flags);
+        //return (VirtualDisplay) method.invoke(null, name, width, height, dpi, surface, flags);
     }
 }