Merge "ContentSuggestions - restore snapshots when needed" into rvc-dev am: 93032f6f95

Change-Id: Ib6e04366387ac64f95d28774b886a085aea9c53e

services/contentsuggestions/java/com/android/server/contentsuggestions/ContentSuggestionsManagerService.java

@@ -21,13 +21,17 @@ import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.app.ActivityManager;
 import android.app.contentsuggestions.ClassificationsRequest;
+import android.app.contentsuggestions.ContentSuggestionsManager;
 import android.app.contentsuggestions.IClassificationsCallback;
 import android.app.contentsuggestions.IContentSuggestionsManager;
 import android.app.contentsuggestions.ISelectionsCallback;
 import android.app.contentsuggestions.SelectionsRequest;
 import android.content.Context;
 import android.graphics.Bitmap;
+import android.graphics.ColorSpace;
+import android.graphics.GraphicBuffer;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.RemoteException;
@@ -133,7 +137,7 @@ public class ContentSuggestionsManagerService extends
                 if (service != null) {
                     // TODO(b/147324195): Temporarily pass bitmap until we change the service API.
                     imageContextRequestExtras.putParcelable(EXTRA_BITMAP, bitmap);
-                    service.provideContextImageLocked(/* taskId = */ -1, imageContextRequestExtras);
+                    service.provideContextImageFromBitmapLocked(imageContextRequestExtras);
                 } else {
                     if (VERBOSE) {
                         Slog.v(TAG, "provideContextImageLocked: no service for " + userId);
@@ -152,10 +156,28 @@ public class ContentSuggestionsManagerService extends
             }
             enforceCaller(UserHandle.getCallingUserId(), "provideContextImage");
 
+            GraphicBuffer snapshotBuffer = null;
+            int colorSpaceId = 0;
+
+            // Skip taking TaskSnapshot when bitmap is provided.
+            if (!imageContextRequestExtras.containsKey(ContentSuggestionsManager.EXTRA_BITMAP)) {
+                // Can block, so call before acquiring the lock.
+                ActivityManager.TaskSnapshot snapshot =
+                        mActivityTaskManagerInternal.getTaskSnapshotBlocking(taskId, false);
+                if (snapshot != null) {
+                    snapshotBuffer = snapshot.getSnapshot();
+                    ColorSpace colorSpace = snapshot.getColorSpace();
+                    if (colorSpace != null) {
+                        colorSpaceId = colorSpace.getId();
+                    }
+                }
+            }
+
             synchronized (mLock) {
                 final ContentSuggestionsPerUserService service = getServiceForUserLocked(userId);
                 if (service != null) {
-                    service.provideContextImageLocked(taskId, imageContextRequestExtras);
+                    service.provideContextImageLocked(taskId, snapshotBuffer, colorSpaceId,
+                            imageContextRequestExtras);
                 } else {
                     if (VERBOSE) {
                         Slog.v(TAG, "provideContextImageLocked: no service for " + userId);

services/contentsuggestions/java/com/android/server/contentsuggestions/ContentSuggestionsPerUserService.java

@@ -19,17 +19,14 @@ package com.android.server.contentsuggestions;
 import android.Manifest;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
-import android.app.ActivityManager;
 import android.app.AppGlobals;
 import android.app.contentsuggestions.ClassificationsRequest;
-import android.app.contentsuggestions.ContentSuggestionsManager;
 import android.app.contentsuggestions.IClassificationsCallback;
 import android.app.contentsuggestions.ISelectionsCallback;
 import android.app.contentsuggestions.SelectionsRequest;
 import android.content.ComponentName;
 import android.content.pm.PackageManager;
 import android.content.pm.ServiceInfo;
-import android.graphics.ColorSpace;
 import android.graphics.GraphicBuffer;
 import android.os.Bundle;
 import android.os.RemoteException;
@@ -95,26 +92,17 @@ public final class ContentSuggestionsPerUserService extends
     }
 
     @GuardedBy("mLock")
-    void provideContextImageLocked(int taskId, @NonNull Bundle imageContextRequestExtras) {
+    void provideContextImageFromBitmapLocked(@NonNull Bundle bitmapContainingExtras) {
+        // No task or snapshot provided, the bitmap is contained in the extras
+        provideContextImageLocked(-1, null, 0, bitmapContainingExtras);
+    }
+
+    @GuardedBy("mLock")
+    void provideContextImageLocked(int taskId, @Nullable GraphicBuffer snapshot,
+            int colorSpaceIdForSnapshot, @NonNull Bundle imageContextRequestExtras) {
         RemoteContentSuggestionsService service = ensureRemoteServiceLocked();
         if (service != null) {
-            GraphicBuffer snapshotBuffer = null;
+            service.provideContextImage(taskId, snapshot, colorSpaceIdForSnapshot,
-            int colorSpaceId = 0;
-
-            // Skip taking TaskSnapshot when bitmap is provided.
-            if (!imageContextRequestExtras.containsKey(ContentSuggestionsManager.EXTRA_BITMAP)) {
-                ActivityManager.TaskSnapshot snapshot =
-                        mActivityTaskManagerInternal.getTaskSnapshotNoRestore(taskId, false);
-                if (snapshot != null) {
-                    snapshotBuffer = snapshot.getSnapshot();
-                    ColorSpace colorSpace = snapshot.getColorSpace();
-                    if (colorSpace != null) {
-                        colorSpaceId = colorSpace.getId();
-                    }
-                }
-            }
-
-            service.provideContextImage(taskId, snapshotBuffer, colorSpaceId,
                     imageContextRequestExtras);
         }
     }

services/core/java/com/android/server/wm/ActivityTaskManagerInternal.java

@@ -548,8 +548,11 @@ public abstract class ActivityTaskManagerInternal {
 
     /**
      * Gets bitmap snapshot of the provided task id.
+     *
+     * <p>Warning! this may restore the snapshot from disk so can block, don't call in a latency
+     * sensitive environment.
      */
-    public abstract ActivityManager.TaskSnapshot getTaskSnapshotNoRestore(int taskId,
+    public abstract ActivityManager.TaskSnapshot getTaskSnapshotBlocking(int taskId,
             boolean isLowResolution);
 
     /** Returns true if uid is considered foreground for activity start purposes. */

services/core/java/com/android/server/wm/ActivityTaskManagerService.java

@@ -7477,10 +7477,10 @@ public class ActivityTaskManagerService extends IActivityTaskManager.Stub {
         }
 
         @Override
-        public ActivityManager.TaskSnapshot getTaskSnapshotNoRestore(int taskId,
+        public ActivityManager.TaskSnapshot getTaskSnapshotBlocking(
-                boolean isLowResolution) {
+                int taskId, boolean isLowResolution) {
             return ActivityTaskManagerService.this.getTaskSnapshot(taskId, isLowResolution,
-                    false /* restoreFromDisk */);
+                    true /* restoreFromDisk */);
         }
 
         @Override