[RK3399][Android7.1] 双屏显示副屏旋转90°patch

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/kris_fei/article/details/86598923

Platform: RK3399
OS: Android 7.1
Kernel: v4.4.83

描述：
标准的sdk不会默认有旋转副屏为横屏显示为竖屏的功能，添加如下patch即可实现，
但是因为是双屏同显，副屏显示会有画面被压缩的现象。

---

Patch:

diff --git a/services/core/java/com/android/server/display/LocalDisplayAdapter.java b/services/core/java/com/android/server/display/LocalDisplayAdapter.java
index 7776d9f..b2aec0b 100755
--- a/services/core/java/com/android/server/display/LocalDisplayAdapter.java
+++ b/services/core/java/com/android/server/display/LocalDisplayAdapter.java
@@ -419,6 +419,7 @@ final class LocalDisplayAdapter extends DisplayAdapter {
                             com.android.internal.R.string.display_manager_hdmi_display_name);
                     mInfo.touch = DisplayDeviceInfo.TOUCH_EXTERNAL;
                     mInfo.setAssumedDensityForExternalDisplay(phys.width, phys.height);
+                    mInfo.rotation=Surface.ROTATION_90;
 
                     // For demonstration purposes, allow rotation of the external display.
                     // In the future we might allow the user to configure this directly.
diff --git a/services/core/java/com/android/server/display/LogicalDisplay.java b/services/core/java/com/android/server/display/LogicalDisplay.java
index 58ddae4..288508f 100755
--- a/services/core/java/com/android/server/display/LogicalDisplay.java
+++ b/services/core/java/com/android/server/display/LogicalDisplay.java
@@ -258,6 +258,13 @@ final class LogicalDisplay {
 
             mPrimaryDisplayDeviceInfo = deviceInfo;
             mInfo = null;
+            if(mDisplayId!=Display.DEFAULT_DISPLAY){
+                mBaseDisplayInfo.appWidth = deviceInfo.height;
+                mBaseDisplayInfo.appHeight = deviceInfo.width;
+                mBaseDisplayInfo.logicalWidth = deviceInfo.height;
+                mBaseDisplayInfo.logicalHeight = deviceInfo.width;
+            }
+
         }
     }
 
@@ -314,6 +321,7 @@ final class LogicalDisplay {
         int orientation = Surface.ROTATION_0;
         if ((displayDeviceInfo.flags & DisplayDeviceInfo.FLAG_ROTATES_WITH_CONTENT) != 0) {
             orientation = displayInfo.rotation;
+
         }
 
         // Apply the physical rotation of the display device itself.
@@ -359,6 +367,13 @@ final class LogicalDisplay {
         mTempDisplayRect.right += mDisplayOffsetX;
         mTempDisplayRect.top += mDisplayOffsetY;
         mTempDisplayRect.bottom += mDisplayOffsetY;
+
+        if(device.getDisplayDeviceInfoLocked().type!=Display.TYPE_BUILT_IN){
+             mTempDisplayRect.left=0;
+             mTempDisplayRect.right=physWidth;
+             mTempDisplayRect.top=0;
+             mTempDisplayRect.bottom=physHeight;
+        }
         device.setProjectionInTransactionLocked(orientation, mTempLayerStackRect, mTempDisplayRect);
     }
 
diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
old mode 100644
new mode 100755