1 files changed, 134 insertions, 0 deletions
diff --git a/location/lib/java/com/android/location/provider/ActivityRecognitionProvider.java b/location/lib/java/com/android/location/provider/ActivityRecognitionProvider.java
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--- /dev/null
+++ b/location/lib/java/com/android/location/provider/ActivityRecognitionProvider.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2014 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 com.android.location.provider;
+
+import com.android.internal.util.Preconditions;
+
+import android.hardware.location.IActivityRecognitionHardware;
+import android.hardware.location.IActivityRecognitionHardwareSink;
+import android.os.RemoteException;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+
+/**
+ * A class that exposes {@link IActivityRecognitionHardware} functionality to unbundled services.
+ */
+public final class ActivityRecognitionProvider {
+    private final IActivityRecognitionHardware mService;
+    private final HashSet<Sink> mSinkSet = new HashSet<Sink>();
+    private final SinkTransport mSinkTransport = new SinkTransport();
+
+    // the following constants must remain in sync with activity_recognition.h
+
+    public static final String ACTIVITY_IN_VEHICLE = "android.activity_recognition.in_vehicle";
+    public static final String ACTIVITY_ON_BICYCLE = "android.activity_recognition.on_bicycle";
+    public static final String ACTIVITY_WALKING = "android.activity_recognition.walking";
+    public static final String ACTIVITY_RUNNING = "android.activity_recognition.running";
+    public static final String ACTIVITY_STILL = "android.activity_recognition.still";
+    public static final String ACTIVITY_TILTING = "android.activity_recognition.tilting";
+
+    public static final int EVENT_TYPE_FLUSH_COMPLETE = 0;
+    public static final int EVENT_TYPE_ENTER = 1;
+    public static final int EVENT_TYPE_EXIT = 2;
+
+    // end constants activity_recognition.h
+
+    /**
+     * Used to receive Activity-Recognition events.
+     */
+    public interface Sink {
+        void onActivityChanged(ActivityChangedEvent event);
+    }
+
+    public ActivityRecognitionProvider(IActivityRecognitionHardware service)
+            throws RemoteException {
+        Preconditions.checkNotNull(service);
+        mService = service;
+        mService.registerSink(mSinkTransport);
+    }
+
+    public String[] getSupportedActivities() throws RemoteException {
+        return mService.getSupportedActivities();
+    }
+
+    public boolean isActivitySupported(String activity) throws RemoteException {
+        return mService.isActivitySupported(activity);
+    }
+
+    public void registerSink(Sink sink) {
+        Preconditions.checkNotNull(sink);
+        synchronized (mSinkSet) {
+            mSinkSet.add(sink);
+        }
+    }
+
+    // TODO: if this functionality is exposed to 3rd party developers, handle unregistration (here
+    // and in the service) of all sinks while failing to disable all events
+    public void unregisterSink(Sink sink) {
+        Preconditions.checkNotNull(sink);
+        synchronized (mSinkSet) {
+            mSinkSet.remove(sink);
+        }
+    }
+
+    public boolean enableActivityEvent(String activity, int eventType, long reportLatencyNs)
+            throws RemoteException {
+        return mService.enableActivityEvent(activity, eventType, reportLatencyNs);
+    }
+
+    public boolean disableActivityEvent(String activity, int eventType) throws RemoteException {
+        return mService.disableActivityEvent(activity, eventType);
+    }
+
+    public boolean flush() throws RemoteException {
+        return mService.flush();
+    }
+
+    private final class SinkTransport extends IActivityRecognitionHardwareSink.Stub {
+        @Override
+        public void onActivityChanged(
+                android.hardware.location.ActivityChangedEvent activityChangedEvent) {
+            Collection<Sink> sinks;
+            synchronized (mSinkSet) {
+                if (mSinkSet.isEmpty()) {
+                    return;
+                }
+
+                sinks = new ArrayList<Sink>(mSinkSet);
+            }
+
+            // translate the event from platform internal and GmsCore types
+            ArrayList<ActivityRecognitionEvent> gmsEvents =
+                    new ArrayList<ActivityRecognitionEvent>();
+            for (android.hardware.location.ActivityRecognitionEvent event
+                    : activityChangedEvent.getActivityRecognitionEvents()) {
+                ActivityRecognitionEvent gmsEvent = new ActivityRecognitionEvent(
+                        event.getActivity(),
+                        event.getEventType(),
+                        event.getTimestampNs());
+                gmsEvents.add(gmsEvent);
+            }
+            ActivityChangedEvent gmsEvent = new ActivityChangedEvent(gmsEvents);
+
+            for (Sink sink : sinks) {
+                sink.onActivityChanged(gmsEvent);
+            }
+        }
+    }
+}