ActivityManagerService: Add method to set media fgs inactive.

Changes adds a new method in activity manager service to set
foreground service of type media playback inactive. This method
is expected to be called from MediaSessionService when media session
is "user-disengaged" for certain amount of time (>10mins).
This method will move foreground service to background and allowing
application to be subject to other system policies to save resources.

Flag: com.android.media.flags.enable_notifying_activity_manager_with_media_session_status_change
BUG: 281762171
Test: atest cts/tests/app/src/android/app/cts/ActivityManagerNotifyMediaFGSTypeTest.java

Change-Id: If4e60dabeec6cc595703c0d07369d7526fe8d862

3 files changed, 64 insertions, 0 deletions

diff --git a/core/java/android/app/ActivityManagerInternal.java b/core/java/android/app/ActivityManagerInternal.java
index f80121d0c9b6..d9f8d33f0545 100644
--- a/core/java/android/app/ActivityManagerInternal.java
+++ b/core/java/android/app/ActivityManagerInternal.java
@@ -1150,6 +1150,20 @@ public abstract class ActivityManagerInternal {
     public abstract void stopForegroundServiceDelegate(@NonNull ServiceConnection connection);
 
     /**
+     * Notifies that a media foreground service associated with a media session has
+     * transitioned to a "user-disengaged" state.
+     * Upon receiving this notification, service may be removed from the foreground state. It
+     * should only be called by {@link com.android.server.media.MediaSessionService}
+     *
+     * @param packageName The package name of the app running the media foreground service.
+     * @param userId The user ID associated with the foreground service.
+     * @param notificationId The ID of the media notification associated with the foreground
+     *                      service.
+     */
+    public abstract void notifyInactiveMediaForegroundService(@NonNull String packageName,
+            @UserIdInt int userId, int notificationId);
+
+    /**
      * Same as {@link android.app.IActivityManager#startProfile(int userId)}, but it would succeed
      * even if the profile is disabled - it should only be called by
      * {@link com.android.server.devicepolicy.DevicePolicyManagerService} when starting a profile
diff --git a/services/core/java/com/android/server/am/ActiveServices.java b/services/core/java/com/android/server/am/ActiveServices.java
index 3f540ad43da1..ab3ab159ba12 100644
--- a/services/core/java/com/android/server/am/ActiveServices.java
+++ b/services/core/java/com/android/server/am/ActiveServices.java
@@ -115,6 +115,7 @@ import static com.android.internal.util.FrameworkStatsLog.SERVICE_REQUEST_EVENT_
 import static com.android.internal.util.FrameworkStatsLog.SERVICE_REQUEST_EVENT_REPORTED__PROC_START_TYPE__PROCESS_START_TYPE_WARM;
 import static com.android.internal.util.FrameworkStatsLog.SERVICE_REQUEST_EVENT_REPORTED__REQUEST_TYPE__BIND;
 import static com.android.internal.util.FrameworkStatsLog.SERVICE_REQUEST_EVENT_REPORTED__REQUEST_TYPE__START;
+import static com.android.media.flags.Flags.enableNotifyingActivityManagerWithMediaSessionStatusChange;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_BACKGROUND_CHECK;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_FOREGROUND_SERVICE;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_MU;
@@ -9319,6 +9320,46 @@ public final class ActiveServices {
         }
     }
 
+    /**
+     * Handles notifications from MediaSessionService about inactive media foreground services.
+     * This method evaluates the provided information and determines whether to stop the
+     * corresponding foreground service.
+     *
+     * @param packageName The package name of the app running the foreground service.
+     * @param userId The user ID associated with the foreground service.
+     * @param notificationId The ID of the media notification associated with the foreground
+     *                      service.
+     */
+    void notifyInactiveMediaForegroundServiceLocked(@NonNull String packageName,
+            @UserIdInt int userId, int notificationId) {
+        if (!enableNotifyingActivityManagerWithMediaSessionStatusChange()) {
+            return;
+        }
+
+        final ServiceMap smap = mServiceMap.get(userId);
+        if (smap == null) {
+            return;
+        }
+        final int serviceSize = smap.mServicesByInstanceName.size();
+        for (int i = 0; i < serviceSize; i++) {
+            final ServiceRecord sr = smap.mServicesByInstanceName.valueAt(i);
+            if (sr.appInfo.packageName.equals(packageName) && sr.isForeground) {
+                if (sr.foregroundServiceType
+                        == ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK
+                        && sr.foregroundId == notificationId) {
+                    if (DEBUG_FOREGROUND_SERVICE) {
+                        Slog.d(TAG, "Forcing media foreground service to background for package "
+                                + packageName);
+                    }
+                    setServiceForegroundInnerLocked(sr, /* id */ 0,
+                            /* notification */ null, /* flags */ 0,
+                            /* foregroundServiceType */ 0, /* callingUidStart */ 0);
+                }
+            }
+        }
+    }
+
+
     private static void getClientPackages(ServiceRecord sr, ArraySet<String> output) {
         var connections = sr.getConnections();
         for (int conni = connections.size() - 1; conni >= 0; conni--) {
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 1c3569dd52d0..54f84aed3718 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -17911,6 +17911,15 @@ public class ActivityManagerService extends IActivityManager.Stub
         }
 
         @Override
+        public void notifyInactiveMediaForegroundService(@NonNull String packageName,
+                @UserIdInt int userId, int notificationId) {
+            synchronized (ActivityManagerService.this) {
+                mServices.notifyInactiveMediaForegroundServiceLocked(packageName, userId,
+                        notificationId);
+            }
+        }
+
+        @Override
         public ArraySet<String> getClientPackages(String servicePackageName) {
             synchronized (ActivityManagerService.this) {
                 return mServices.getClientPackagesLocked(servicePackageName);