diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index f09244ad7859d..d87a58215ea4f 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -6665,6 +6665,15 @@ package android.media.musicrecognition {
}
+package android.media.projection {
+
+ public class MediaProjectionGlobal {
+ method @Nullable public android.hardware.display.VirtualDisplay createVirtualDisplay(@NonNull String, int, int, int, @Nullable android.view.Surface);
+ method @NonNull public static android.media.projection.MediaProjectionGlobal getInstance();
+ }
+
+}
+
package android.media.session {
public final class MediaSessionManager {
diff --git a/media/java/android/media/projection/MediaProjectionGlobal.java b/media/java/android/media/projection/MediaProjectionGlobal.java
new file mode 100644
index 0000000000000..4374a052dad28
--- /dev/null
+++ b/media/java/android/media/projection/MediaProjectionGlobal.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.media.projection;
+
+import static android.hardware.display.DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.annotation.SystemApi;
+import android.content.Context;
+import android.content.pm.IPackageManager;
+import android.hardware.display.DisplayManagerGlobal;
+import android.hardware.display.IDisplayManager;
+import android.hardware.display.VirtualDisplay;
+import android.hardware.display.VirtualDisplayConfig;
+import android.os.IBinder;
+import android.os.Process;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.view.Surface;
+
+/**
+ * This is a helper for MediaProjection when requests are made from outside an application. This
+ * should only be used by processes running as shell as a way to capture recordings without being
+ * an application. The requests will fail if coming from any process that's not Shell.
+ * @hide
+ */
+@SystemApi
+public class MediaProjectionGlobal {
+ private static final Object sLock = new Object();
+ private static MediaProjectionGlobal sInstance;
+
+ /**
+ * @return The instance of {@link MediaProjectionGlobal}
+ */
+ @NonNull
+ public static MediaProjectionGlobal getInstance() {
+ synchronized (sLock) {
+ if (sInstance == null) {
+ final IBinder displayBinder = ServiceManager.getService(Context.DISPLAY_SERVICE);
+ final IBinder packageBinder = ServiceManager.getService("package");
+ if (displayBinder != null && packageBinder != null) {
+ sInstance = new MediaProjectionGlobal(
+ IDisplayManager.Stub.asInterface(displayBinder),
+ IPackageManager.Stub.asInterface(packageBinder));
+ }
+ }
+ return sInstance;
+ }
+ }
+
+ private final IDisplayManager mDm;
+ private final IPackageManager mPackageManager;
+
+ private MediaProjectionGlobal(IDisplayManager dm, IPackageManager packageManager) {
+ mDm = dm;
+ mPackageManager = packageManager;
+ }
+
+ /**
+ * Creates a VirtualDisplay that will mirror the content of displayIdToMirror
+ * @param name The name for the virtual display
+ * @param width The initial width for the virtual display
+ * @param height The initial height for the virtual display
+ * @param displayIdToMirror The displayId that will be mirrored into the virtual display.
+ * @return VirtualDisplay that can be used to update properties.
+ */
+ @Nullable
+ public VirtualDisplay createVirtualDisplay(@NonNull String name, int width, int height,
+ int displayIdToMirror, @Nullable Surface surface) {
+
+ // Density doesn't matter since this virtual display is only used for mirroring.
+ VirtualDisplayConfig.Builder builder = new VirtualDisplayConfig.Builder(name, width,
+ height, 1 /* densityDpi */)
+ .setFlags(VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR)
+ .setDisplayIdToMirror(displayIdToMirror);
+ if (surface != null) {
+ builder.setSurface(surface);
+ }
+ VirtualDisplayConfig virtualDisplayConfig = builder.build();
+
+ String[] packages;
+ try {
+ packages = mPackageManager.getPackagesForUid(Process.myUid());
+ } catch (RemoteException ex) {
+ throw ex.rethrowFromSystemServer();
+ }
+
+ // Just use the first one since it just needs to match the package when looking it up by
+ // calling UID in system server.
+ // The call may come from a rooted device, in that case the requesting uid will be root so
+ // it will not have any package name
+ String packageName = packages == null ? null : packages[0];
+ DisplayManagerGlobal.VirtualDisplayCallback
+ callbackWrapper = new DisplayManagerGlobal.VirtualDisplayCallback(null, null);
+ int displayId;
+ try {
+ displayId = mDm.createVirtualDisplay(virtualDisplayConfig, callbackWrapper, null,
+ packageName);
+ } catch (RemoteException ex) {
+ throw ex.rethrowFromSystemServer();
+ }
+ return DisplayManagerGlobal.getInstance().createVirtualDisplayWrapper(virtualDisplayConfig,
+ null, callbackWrapper, displayId);
+ }
+}
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index b31e36c417ab7..6c17036b3f5f0 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -180,6 +180,7 @@
+
diff --git a/services/core/java/com/android/server/display/DisplayManagerService.java b/services/core/java/com/android/server/display/DisplayManagerService.java
index e53ac379536be..56af12a62c169 100644
--- a/services/core/java/com/android/server/display/DisplayManagerService.java
+++ b/services/core/java/com/android/server/display/DisplayManagerService.java
@@ -35,6 +35,7 @@
import static android.hardware.display.DisplayViewport.VIEWPORT_EXTERNAL;
import static android.hardware.display.DisplayViewport.VIEWPORT_INTERNAL;
import static android.hardware.display.DisplayViewport.VIEWPORT_VIRTUAL;
+import static android.os.Process.ROOT_UID;
import android.Manifest;
import android.annotation.NonNull;
@@ -1170,6 +1171,10 @@ private void requestColorModeInternal(int displayId, int colorMode) {
}
private boolean validatePackageName(int uid, String packageName) {
+ // Root doesn't have a package name.
+ if (uid == ROOT_UID) {
+ return true;
+ }
if (packageName != null) {
String[] packageNames = mContext.getPackageManager().getPackagesForUid(uid);
if (packageNames != null) {