hack_virtual_display

server/src/main/java/com/genymobile/scrcpy/Server.java

@@ -190,7 +190,8 @@ public final class Server {
                         options.getSendFrameMeta());
                 SurfaceCapture surfaceCapture;
                 if (options.getVideoSource() == VideoSource.DISPLAY) {
-                    surfaceCapture = new ScreenCapture(device);
+                    surfaceCapture = new ScreenCapture(device, options.getDisplayId(), options.getMaxSize(), options.getCrop(),
+                            options.getLockVideoOrientation());
                 } else {
                     surfaceCapture = new CameraCapture(options.getCameraId(), options.getCameraFacing(), options.getCameraSize(),
                             options.getMaxSize(), options.getCameraAspectRatio(), options.getCameraFps(), options.getCameraHighSpeed());

server/src/main/java/com/genymobile/scrcpy/control/Controller.java

@@ -243,7 +243,7 @@ public class Controller implements AsyncProcessor {
             return false;
         }
         for (KeyEvent event : events) {
-            if (!device.injectEvent(event, Device.INJECT_MODE_ASYNC)) {
+            if (!device.injectMainDisplayEvent(event, Device.INJECT_MODE_ASYNC)) {
                 return false;
             }
         }
@@ -324,7 +324,7 @@ public class Controller implements AsyncProcessor {
                     // First button pressed: ACTION_DOWN
                     MotionEvent downEvent = MotionEvent.obtain(lastTouchDown, now, MotionEvent.ACTION_DOWN, pointerCount, pointerProperties,
                             pointerCoords, 0, buttons, 1f, 1f, DEFAULT_DEVICE_ID, 0, source, 0);
-                    if (!device.injectEvent(downEvent, Device.INJECT_MODE_ASYNC)) {
+                    if (!device.injectVirtualDisplayEvent(downEvent, Device.INJECT_MODE_ASYNC)) {
                         return false;
                     }
                 }
@@ -335,7 +335,7 @@ public class Controller implements AsyncProcessor {
                 if (!InputManager.setActionButton(pressEvent, actionButton)) {
                     return false;
                 }
-                if (!device.injectEvent(pressEvent, Device.INJECT_MODE_ASYNC)) {
+                if (!device.injectVirtualDisplayEvent(pressEvent, Device.INJECT_MODE_ASYNC)) {
                     return false;
                 }
 
@@ -349,7 +349,7 @@ public class Controller implements AsyncProcessor {
                 if (!InputManager.setActionButton(releaseEvent, actionButton)) {
                     return false;
                 }
-                if (!device.injectEvent(releaseEvent, Device.INJECT_MODE_ASYNC)) {
+                if (!device.injectVirtualDisplayEvent(releaseEvent, Device.INJECT_MODE_ASYNC)) {
                     return false;
                 }
 
@@ -357,7 +357,7 @@ public class Controller implements AsyncProcessor {
                     // Last button released: ACTION_UP
                     MotionEvent upEvent = MotionEvent.obtain(lastTouchDown, now, MotionEvent.ACTION_UP, pointerCount, pointerProperties,
                             pointerCoords, 0, buttons, 1f, 1f, DEFAULT_DEVICE_ID, 0, source, 0);
-                    if (!device.injectEvent(upEvent, Device.INJECT_MODE_ASYNC)) {
+                    if (!device.injectVirtualDisplayEvent(upEvent, Device.INJECT_MODE_ASYNC)) {
                         return false;
                     }
                 }
@@ -368,7 +368,7 @@ public class Controller implements AsyncProcessor {
 
         MotionEvent event = MotionEvent.obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f,
                 DEFAULT_DEVICE_ID, 0, source, 0);
-        return device.injectEvent(event, Device.INJECT_MODE_ASYNC);
+        return device.injectVirtualDisplayEvent(event, Device.INJECT_MODE_ASYNC);
     }
 
     private boolean injectScroll(Position position, float hScroll, float vScroll, int buttons) {
@@ -390,7 +390,7 @@ public class Controller implements AsyncProcessor {
 
         MotionEvent event = MotionEvent.obtain(lastTouchDown, now, MotionEvent.ACTION_SCROLL, 1, pointerProperties, pointerCoords, 0, buttons, 1f, 1f,
                 DEFAULT_DEVICE_ID, 0, InputDevice.SOURCE_MOUSE, 0);
-        return device.injectEvent(event, Device.INJECT_MODE_ASYNC);
+        return device.injectVirtualDisplayEvent(event, Device.INJECT_MODE_ASYNC);
     }
 
     /**

server/src/main/java/com/genymobile/scrcpy/device/Device.java

@@ -2,7 +2,6 @@ package com.genymobile.scrcpy.device;
 
 import com.genymobile.scrcpy.Options;
 import com.genymobile.scrcpy.util.Ln;
-import com.genymobile.scrcpy.util.LogUtils;
 import com.genymobile.scrcpy.video.ScreenInfo;
 import com.genymobile.scrcpy.wrappers.ClipboardManager;
 import com.genymobile.scrcpy.wrappers.DisplayControl;
@@ -16,8 +15,6 @@ import android.graphics.Rect;
 import android.os.Build;
 import android.os.IBinder;
 import android.os.SystemClock;
-import android.view.IDisplayFoldListener;
-import android.view.IRotationWatcher;
 import android.view.InputDevice;
 import android.view.InputEvent;
 import android.view.KeyCharacterMap;
@@ -37,26 +34,10 @@ public final class Device {
     public static final int LOCK_VIDEO_ORIENTATION_UNLOCKED = -1;
     public static final int LOCK_VIDEO_ORIENTATION_INITIAL = -2;
 
-    public interface RotationListener {
-        void onRotationChanged(int rotation);
-    }
-
-    public interface FoldListener {
-        void onFoldChanged(int displayId, boolean folded);
-    }
-
     public interface ClipboardListener {
         void onClipboardTextChanged(String text);
     }
 
-    private final Rect crop;
-    private int maxSize;
-    private final int lockVideoOrientation;
-
-    private Size deviceSize;
-    private ScreenInfo screenInfo;
-    private RotationListener rotationListener;
-    private FoldListener foldListener;
     private ClipboardListener clipboardListener;
     private final AtomicBoolean isSettingClipboard = new AtomicBoolean();
 
@@ -65,71 +46,15 @@ public final class Device {
      */
     private final int displayId;
 
-    /**
-     * The surface flinger layer stack associated with this logical display
-     */
-    private final int layerStack;
-
     private final boolean supportsInputEvents;
 
-    public Device(Options options) throws ConfigurationException {
+    // set by the ScreenCapture instance
+    private ScreenInfo screenInfo;
+    private int virtualDisplayId;
+
+    public Device(Options options) {
         displayId = options.getDisplayId();
-        DisplayInfo displayInfo = ServiceManager.getDisplayManager().getDisplayInfo(displayId);
-        if (displayInfo == null) {
-            Ln.e("Display " + displayId + " not found\n" + LogUtils.buildDisplayListMessage());
-            throw new ConfigurationException("Unknown display id: " + displayId);
-        }
-
-        int displayInfoFlags = displayInfo.getFlags();
-
-        deviceSize = displayInfo.getSize();
-        crop = options.getCrop();
-        maxSize = options.getMaxSize();
-        lockVideoOrientation = options.getLockVideoOrientation();
-
-        screenInfo = ScreenInfo.computeScreenInfo(displayInfo.getRotation(), deviceSize, crop, maxSize, lockVideoOrientation);
-        layerStack = displayInfo.getLayerStack();
-
-        ServiceManager.getWindowManager().registerRotationWatcher(new IRotationWatcher.Stub() {
-            @Override
-            public void onRotationChanged(int rotation) {
-                synchronized (Device.this) {
-                    screenInfo = screenInfo.withDeviceRotation(rotation);
-
-                    // notify
-                    if (rotationListener != null) {
-                        rotationListener.onRotationChanged(rotation);
-                    }
-                }
-            }
-        }, displayId);
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-            ServiceManager.getWindowManager().registerDisplayFoldListener(new IDisplayFoldListener.Stub() {
-                @Override
-                public void onDisplayFoldChanged(int displayId, boolean folded) {
-                    if (Device.this.displayId != displayId) {
-                        // Ignore events related to other display ids
-                        return;
-                    }
-
-                    synchronized (Device.this) {
-                        DisplayInfo displayInfo = ServiceManager.getDisplayManager().getDisplayInfo(displayId);
-                        if (displayInfo == null) {
-                            Ln.e("Display " + displayId + " not found\n" + LogUtils.buildDisplayListMessage());
-                            return;
-                        }
-
-                        deviceSize = displayInfo.getSize();
-                        screenInfo = ScreenInfo.computeScreenInfo(displayInfo.getRotation(), deviceSize, crop, maxSize, lockVideoOrientation);
-                        // notify
-                        if (foldListener != null) {
-                            foldListener.onFoldChanged(displayId, folded);
-                        }
-                    }
-                }
-            });
-        }
+        virtualDisplayId = displayId; // by default
 
         if (options.getControl() && options.getClipboardAutosync()) {
             // If control and autosync are enabled, synchronize Android clipboard to the computer automatically
@@ -157,38 +82,20 @@ public final class Device {
             }
         }
 
-        if ((displayInfoFlags & DisplayInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS) == 0) {
-            Ln.w("Display doesn't have FLAG_SUPPORTS_PROTECTED_BUFFERS flag, mirroring can be restricted");
-        }
-
         // main display or any display on Android >= Q
-        supportsInputEvents = displayId == 0 || Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q;
+        supportsInputEvents = options.getDisplayId() == 0 || Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q;
         if (!supportsInputEvents) {
             Ln.w("Input events are not supported for secondary displays before Android 10");
         }
     }
 
-    public int getDisplayId() {
-        return displayId;
-    }
-
-    public synchronized void setMaxSize(int newMaxSize) {
-        maxSize = newMaxSize;
-        screenInfo = ScreenInfo.computeScreenInfo(screenInfo.getReverseVideoRotation(), deviceSize, crop, newMaxSize, lockVideoOrientation);
-    }
-
-    public synchronized ScreenInfo getScreenInfo() {
-        return screenInfo;
-    }
-
-    public int getLayerStack() {
-        return layerStack;
-    }
-
     public Point getPhysicalPoint(Position position) {
         // it hides the field on purpose, to read it with a lock
         @SuppressWarnings("checkstyle:HiddenField")
         ScreenInfo screenInfo = getScreenInfo(); // read with synchronization
+        if (screenInfo == null) {
+            return null;
+        }
 
         // ignore the locked video orientation, the events will apply in coordinates considered in the physical device orientation
         Size unlockedVideoSize = screenInfo.getUnlockedVideoSize();
@@ -222,6 +129,22 @@ public final class Device {
         return supportsInputEvents;
     }
 
+    private synchronized ScreenInfo getScreenInfo() {
+        return screenInfo;
+    }
+
+    public synchronized void setScreenInfo(ScreenInfo screenInfo) {
+        this.screenInfo = screenInfo;
+    }
+
+    private synchronized int getVirtualDisplayId() {
+        return virtualDisplayId;
+    }
+
+    public synchronized void setVirtualDisplayId(int virtualDisplayId) {
+        this.virtualDisplayId = virtualDisplayId;
+    }
+
     public static boolean injectEvent(InputEvent inputEvent, int displayId, int injectMode) {
         if (!supportsInputEvents(displayId)) {
             throw new AssertionError("Could not inject input event if !supportsInputEvents()");
@@ -234,10 +157,14 @@ public final class Device {
         return ServiceManager.getInputManager().injectInputEvent(inputEvent, injectMode);
     }
 
-    public boolean injectEvent(InputEvent event, int injectMode) {
+    public boolean injectMainDisplayEvent(InputEvent event, int injectMode) {
         return injectEvent(event, displayId, injectMode);
     }
 
+    public boolean injectVirtualDisplayEvent(InputEvent event, int injectMode) {
+        return injectEvent(event, virtualDisplayId, injectMode);
+    }
+
     public static boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState, int displayId, int injectMode) {
         long now = SystemClock.uptimeMillis();
         KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
@@ -262,14 +189,6 @@ public final class Device {
         return ServiceManager.getPowerManager().isScreenOn();
     }
 
-    public synchronized void setRotationListener(RotationListener rotationListener) {
-        this.rotationListener = rotationListener;
-    }
-
-    public synchronized void setFoldListener(FoldListener foldlistener) {
-        this.foldListener = foldlistener;
-    }
-
     public synchronized void setClipboardListener(ClipboardListener clipboardListener) {
         this.clipboardListener = clipboardListener;
     }

server/src/main/java/com/genymobile/scrcpy/device/DisplayInfo.java

@@ -6,15 +6,17 @@ public final class DisplayInfo {
     private final int rotation;
     private final int layerStack;
     private final int flags;
+    private final int logicalDensityDpi;
 
     public static final int FLAG_SUPPORTS_PROTECTED_BUFFERS = 0x00000001;
 
-    public DisplayInfo(int displayId, Size size, int rotation, int layerStack, int flags) {
+    public DisplayInfo(int displayId, Size size, int rotation, int layerStack, int flags, int logicalDensityDpi) {
         this.displayId = displayId;
         this.size = size;
         this.rotation = rotation;
         this.layerStack = layerStack;
         this.flags = flags;
+        this.logicalDensityDpi = logicalDensityDpi;
     }
 
     public int getDisplayId() {
@@ -36,5 +38,9 @@ public final class DisplayInfo {
     public int getFlags() {
         return flags;
     }
+
+    public int getLogicalDensityDpi() {
+        return logicalDensityDpi;
+    }
 }
 

server/src/main/java/com/genymobile/scrcpy/video/ScreenCapture.java

@@ -1,42 +1,115 @@
 package com.genymobile.scrcpy.video;
 
+import com.genymobile.scrcpy.device.ConfigurationException;
 import com.genymobile.scrcpy.device.Device;
+import com.genymobile.scrcpy.device.DisplayInfo;
 import com.genymobile.scrcpy.device.Size;
 import com.genymobile.scrcpy.util.Ln;
+import com.genymobile.scrcpy.util.LogUtils;
 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;
+import android.view.IDisplayFoldListener;
+import android.view.IRotationWatcher;
 import android.view.Surface;
 
-public class ScreenCapture extends SurfaceCapture implements Device.RotationListener, Device.FoldListener {
+public class ScreenCapture extends SurfaceCapture {
 
     private final Device device;
+
+    private final int displayId;
+    private int maxSize;
+    private final Rect crop;
+    private final int lockVideoOrientation;
+    private int layerStack;
+    private int dpi;
+
+    private Size deviceSize;
+    private ScreenInfo screenInfo;
+
     private IBinder display;
     private VirtualDisplay virtualDisplay;
 
-    public ScreenCapture(Device device) {
+    private IRotationWatcher rotationWatcher;
+    private IDisplayFoldListener displayFoldListener;
+
+    public ScreenCapture(Device device, int displayId, int maxSize, Rect crop, int lockVideoOrientation) {
         this.device = device;
+        this.displayId = displayId;
+        this.maxSize = maxSize;
+        this.crop = crop;
+        this.lockVideoOrientation = lockVideoOrientation;
     }
 
     @Override
-    public void init() {
-        device.setRotationListener(this);
-        device.setFoldListener(this);
+    public void init() throws ConfigurationException {
+        DisplayInfo displayInfo = ServiceManager.getDisplayManager().getDisplayInfo(displayId);
+        if (displayInfo == null) {
+            Ln.e("Display " + displayId + " not found\n" + LogUtils.buildDisplayListMessage());
+            throw new ConfigurationException("Unknown display id: " + displayId);
+        }
+
+        deviceSize = displayInfo.getSize();
+        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() {
+                @Override
+                public void onRotationChanged(int rotation) {
+                    synchronized (ScreenCapture.this) {
+                        screenInfo = screenInfo.withDeviceRotation(rotation);
+                        device.setScreenInfo(screenInfo);
+                    }
+                }
+            };
+            ServiceManager.getWindowManager().registerRotationWatcher(rotationWatcher, displayId);
+        }
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            displayFoldListener = new IDisplayFoldListener.Stub() {
+                @Override
+                public void onDisplayFoldChanged(int displayId, boolean folded) {
+                    if (ScreenCapture.this.displayId != displayId) {
+                        // Ignore events related to other display ids
+                        return;
+                    }
+
+                    synchronized (ScreenCapture.this) {
+                        DisplayInfo displayInfo = ServiceManager.getDisplayManager().getDisplayInfo(displayId);
+                        if (displayInfo == null) {
+                            Ln.e("Display " + displayId + " not found\n" + LogUtils.buildDisplayListMessage());
+                            return;
+                        }
+
+                        deviceSize = displayInfo.getSize();
+                        screenInfo = ScreenInfo.computeScreenInfo(displayInfo.getRotation(), deviceSize, crop, maxSize, lockVideoOrientation);
+                        device.setScreenInfo(screenInfo);
+                    }
+                }
+            };
+            ServiceManager.getWindowManager().registerDisplayFoldListener(displayFoldListener);
+        }
+
+        if ((displayInfo.getFlags() & DisplayInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS) == 0) {
+            Ln.w("Display doesn't have FLAG_SUPPORTS_PROTECTED_BUFFERS flag, mirroring can be restricted");
+        }
     }
 
     @Override
     public void start(Surface surface) {
-        ScreenInfo screenInfo = device.getScreenInfo();
         Rect contentRect = screenInfo.getContentRect();
 
         // does not include the locked video orientation
         Rect unlockedVideoRect = screenInfo.getUnlockedVideoSize().toRect();
         int videoRotation = screenInfo.getVideoRotation();
-        int layerStack = device.getLayerStack();
 
         if (display != null) {
             SurfaceControl.destroyDisplay(display);
@@ -49,8 +122,12 @@ public class ScreenCapture extends SurfaceCapture implements Device.RotationList
 
         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(), device.getDisplayId(), surface);
+                    .createVirtualDisplay("scrcpy", videoRect.width(), videoRect.height(), dpi, surface, flags);
+            device.setVirtualDisplayId(virtualDisplay.getDisplay().getDisplayId());
             Ln.d("Display: using DisplayManager API");
         } catch (Exception displayManagerException) {
             try {
@@ -67,8 +144,12 @@ public class ScreenCapture extends SurfaceCapture implements Device.RotationList
 
     @Override
     public void release() {
-        device.setRotationListener(null);
-        device.setFoldListener(null);
+        if (rotationWatcher != null) {
+            ServiceManager.getWindowManager().unregisterRotationWatcher(rotationWatcher);
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            ServiceManager.getWindowManager().unregisterDisplayFoldListener(displayFoldListener);
+        }
         if (display != null) {
             SurfaceControl.destroyDisplay(display);
             display = null;
@@ -80,26 +161,18 @@ public class ScreenCapture extends SurfaceCapture implements Device.RotationList
     }
 
     @Override
-    public Size getSize() {
-        return device.getScreenInfo().getVideoSize();
+    public synchronized Size getSize() {
+        return screenInfo.getVideoSize();
     }
 
     @Override
-    public boolean setMaxSize(int maxSize) {
-        device.setMaxSize(maxSize);
+    public synchronized boolean setMaxSize(int newMaxSize) {
+        maxSize = newMaxSize;
+        screenInfo = ScreenInfo.computeScreenInfo(screenInfo.getReverseVideoRotation(), deviceSize, crop, newMaxSize, lockVideoOrientation);
+        device.setScreenInfo(screenInfo);
         return true;
     }
 
-    @Override
-    public void onFoldChanged(int displayId, boolean folded) {
-        requestReset();
-    }
-
-    @Override
-    public void onRotationChanged(int rotation) {
-        requestReset();
-    }
-
     private static IBinder createDisplay() throws Exception {
         // Since Android 12 (preview), secure displays could not be created with shell permissions anymore.
         // On Android 12 preview, SDK_INT is still R (not S), but CODENAME is "S".

server/src/main/java/com/genymobile/scrcpy/video/SurfaceCapture.java

@@ -1,5 +1,6 @@
 package com.genymobile.scrcpy.video;
 
+import com.genymobile.scrcpy.device.ConfigurationException;
 import com.genymobile.scrcpy.device.Size;
 
 import android.view.Surface;
@@ -34,7 +35,7 @@ public abstract class SurfaceCapture {
     /**
      * Called once before the capture starts.
      */
-    public abstract void init() throws IOException;
+    public abstract void init() throws ConfigurationException, IOException;
 
     /**
      * Called after the capture ends (if and only if {@link #init()} has been called).

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;
@@ -39,7 +42,7 @@ public final class DisplayManager {
     public static DisplayInfo parseDisplayInfo(String dumpsysDisplayOutput, int displayId) {
         Pattern regex = Pattern.compile(
                 "^    mOverrideDisplayInfo=DisplayInfo\\{\".*?, displayId " + displayId + ".*?(, FLAG_.*)?, real ([0-9]+) x ([0-9]+).*?, "
-                        + "rotation ([0-9]+).*?, layerStack ([0-9]+)",
+                        + "rotation ([0-9]+).*?, density ([0-9]+).*?, layerStack ([0-9]+)",
                 Pattern.MULTILINE);
         Matcher m = regex.matcher(dumpsysDisplayOutput);
         if (!m.find()) {
@@ -49,9 +52,10 @@ public final class DisplayManager {
         int width = Integer.parseInt(m.group(2));
         int height = Integer.parseInt(m.group(3));
         int rotation = Integer.parseInt(m.group(4));
-        int layerStack = Integer.parseInt(m.group(5));
+        int density = Integer.parseInt(m.group(5));
+        int layerStack = Integer.parseInt(m.group(6));
 
-        return new DisplayInfo(displayId, new Size(width, height), rotation, layerStack, flags);
+        return new DisplayInfo(displayId, new Size(width, height), rotation, layerStack, flags, density);
     }
 
     private static DisplayInfo getDisplayInfoFromDumpsysDisplay(int displayId) {
@@ -98,7 +102,8 @@ public final class DisplayManager {
             int rotation = cls.getDeclaredField("rotation").getInt(displayInfo);
             int layerStack = cls.getDeclaredField("layerStack").getInt(displayInfo);
             int flags = cls.getDeclaredField("flags").getInt(displayInfo);
-            return new DisplayInfo(displayId, new Size(width, height), rotation, layerStack, flags);
+            int logicalDensityDpi = cls.getDeclaredField("logicalDensityDpi").getInt(displayInfo);
+            return new DisplayInfo(displayId, new Size(width, height), rotation, layerStack, flags, logicalDensityDpi);
         } catch (ReflectiveOperationException e) {
             throw new AssertionError(e);
         }
@@ -115,13 +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);
     }
 }

server/src/main/java/com/genymobile/scrcpy/wrappers/WindowManager.java

@@ -200,13 +200,29 @@ public final class WindowManager {
         }
     }
 
+    public void unregisterRotationWatcher(IRotationWatcher rotationWatcher) {
+        try {
+            manager.getClass().getMethod("removeRotationWatcher", IRotationWatcher.class).invoke(manager, rotationWatcher);
+        } catch (Exception e) {
+            Ln.e("Could not unregister rotation watcher", e);
+        }
+    }
+
     @TargetApi(29)
     public void registerDisplayFoldListener(IDisplayFoldListener foldListener) {
         try {
-            Class<?> cls = manager.getClass();
-            cls.getMethod("registerDisplayFoldListener", IDisplayFoldListener.class).invoke(manager, foldListener);
+            manager.getClass().getMethod("registerDisplayFoldListener", IDisplayFoldListener.class).invoke(manager, foldListener);
         } catch (Exception e) {
             Ln.e("Could not register display fold listener", e);
         }
     }
+
+    @TargetApi(29)
+    public void unregisterDisplayFoldListener(IDisplayFoldListener foldListener) {
+        try {
+            manager.getClass().getMethod("unregisterDisplayFoldListener", IDisplayFoldListener.class).invoke(manager, foldListener);
+        } catch (Exception e) {
+            Ln.e("Could not unregister display fold listener", e);
+        }
+    }
 }