Add rotation support for non default display

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

@@ -180,7 +180,7 @@ private void handleEvent() throws IOException {
                 }
                 break;
             case ControlMessage.TYPE_ROTATE_DEVICE:
-                Device.rotateDevice();
+                device.rotateDevice();
                 break;
             default:
                 // do nothing

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

@@ -359,21 +359,25 @@ public static boolean powerOffScreen(int displayId) {
     /**
      * Disable auto-rotation (if enabled), set the screen rotation and re-enable auto-rotation (if it was enabled).
      */
-    public static void rotateDevice() {
+    public void rotateDevice() {
         WindowManager wm = ServiceManager.getWindowManager();
 
-        boolean accelerometerRotation = !wm.isRotationFrozen();
+        boolean accelerometerRotation = !wm.isRotationFrozen(displayId);
 
-        int currentRotation = wm.getRotation();
+        int currentRotation;
+        if (displayId != 0) {
+            DisplayInfo displayInfo = ServiceManager.getDisplayManager().getDisplayInfo(displayId);
+            currentRotation = displayInfo.getRotation();
+        } else currentRotation = wm.getRotation();
         int newRotation = (currentRotation & 1) ^ 1; // 0->1, 1->0, 2->1, 3->0
         String newRotationString = newRotation == 0 ? "portrait" : "landscape";
 
         Ln.i("Device rotation requested: " + newRotationString);
-        wm.freezeRotation(newRotation);
+        wm.freezeRotation(displayId, newRotation);
 
         // restore auto-rotate if necessary
         if (accelerometerRotation) {
-            wm.thawRotation();
+            wm.thawRotation(displayId);
         }
     }
-}
+}

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

@@ -13,8 +13,11 @@ public final class WindowManager {
     private final IInterface manager;
     private Method getRotationMethod;
     private Method freezeRotationMethod;
+    private Method freezeDisplayRotationMethod;
     private Method isRotationFrozenMethod;
+    private Method isDisplayRotationFrozenMethod;
     private Method thawRotationMethod;
+    private Method thawDisplayRotationMethod;
 
     static WindowManager create() {
         IInterface manager = ServiceManager.getService("window", "android.view.IWindowManager");
@@ -47,20 +50,47 @@ private Method getFreezeRotationMethod() throws NoSuchMethodException {
         return freezeRotationMethod;
     }
 
+    // new method added since this commit:
+    // https://android.googlesource.com/platform/frameworks/base/+/90c9005e687aa0f63f1ac391adc1e8878ab31759%5E%21/#F0
+    private Method getFreezeDisplayRotationMethod() throws NoSuchMethodException {
+        if (freezeDisplayRotationMethod == null) {
+            freezeDisplayRotationMethod = manager.getClass().getMethod("freezeDisplayRotation", int.class, int.class);
+        }
+        return freezeDisplayRotationMethod;
+    }
+
     private Method getIsRotationFrozenMethod() throws NoSuchMethodException {
         if (isRotationFrozenMethod == null) {
             isRotationFrozenMethod = manager.getClass().getMethod("isRotationFrozen");
         }
         return isRotationFrozenMethod;
     }
 
+    // new method added since this commit:
+    // https://android.googlesource.com/platform/frameworks/base/+/90c9005e687aa0f63f1ac391adc1e8878ab31759%5E%21/#F0
+    private Method getIsDisplayRotationFrozenMethod() throws NoSuchMethodException {
+        if (isDisplayRotationFrozenMethod == null) {
+            isDisplayRotationFrozenMethod = manager.getClass().getMethod("isDisplayRotationFrozen", int.class);
+        }
+        return isDisplayRotationFrozenMethod;
+    }
+
     private Method getThawRotationMethod() throws NoSuchMethodException {
         if (thawRotationMethod == null) {
             thawRotationMethod = manager.getClass().getMethod("thawRotation");
         }
         return thawRotationMethod;
     }
 
+    // new method added since this commit:
+    // https://android.googlesource.com/platform/frameworks/base/+/90c9005e687aa0f63f1ac391adc1e8878ab31759%5E%21/#F0
+    private Method getThawDisplayRotationMethod() throws NoSuchMethodException {
+        if (thawDisplayRotationMethod == null) {
+            thawDisplayRotationMethod = manager.getClass().getMethod("thawDisplayRotation", int.class);
+        }
+        return thawDisplayRotationMethod;
+    }
+
     public int getRotation() {
         try {
             Method method = getGetRotationMethod();
@@ -71,29 +101,53 @@ public int getRotation() {
         }
     }
 
-    public void freezeRotation(int rotation) {
+    public void freezeRotation(int displayId, int rotation) {
         try {
-            Method method = getFreezeRotationMethod();
-            method.invoke(manager, rotation);
+            try {
+                Method method = getFreezeDisplayRotationMethod();
+                method.invoke(manager, displayId, rotation);
+            } catch (ReflectiveOperationException e) {
+                if (displayId == 0) {
+                    Method method = getFreezeRotationMethod();
+                    method.invoke(manager, rotation);
+                } else Ln.e("Could not invoke method", e);
+            }
         } catch (ReflectiveOperationException e) {
             Ln.e("Could not invoke method", e);
         }
     }
 
-    public boolean isRotationFrozen() {
+    public boolean isRotationFrozen(int displayId) {
         try {
-            Method method = getIsRotationFrozenMethod();
-            return (boolean) method.invoke(manager);
+            try {
+                Method method = getIsDisplayRotationFrozenMethod();
+                return (boolean) method.invoke(manager, displayId);
+            } catch (ReflectiveOperationException e) {
+                if (displayId == 0) {
+                    Method method = getIsRotationFrozenMethod();
+                    return (boolean) method.invoke(manager);
+                } else {
+                    Ln.e("Could not invoke method", e);
+                    return false;
+                }
+            }
         } catch (ReflectiveOperationException e) {
             Ln.e("Could not invoke method", e);
             return false;
         }
     }
 
-    public void thawRotation() {
+    public void thawRotation(int displayId) {
         try {
-            Method method = getThawRotationMethod();
-            method.invoke(manager);
+            try {
+                Method method = getThawDisplayRotationMethod();
+                method.invoke(manager, displayId);
+            } catch (ReflectiveOperationException e) {
+                if (displayId == 0) {
+                    Method method = getThawRotationMethod();
+                    method.invoke(manager);
+                } else Ln.e("Could not invoke method", e);
+            }
         } catch (ReflectiveOperationException e) {
             Ln.e("Could not invoke method", e);
         }