Update ContextHubManager's System APIs. (8bad3fec) · Commits · e / os / android_frameworks_base

api/system-current.txt

+4 −3

Original line number	Diff line number	Diff line
		@@ -15283,7 +15283,7 @@ package android.hardware.location {
		}

		public final class ContextHubManager {
		method public java.lang.Integer[] findNanoAppOnHub(int, android.hardware.location.NanoAppFilter);
		method public int[] findNanoAppOnHub(int, android.hardware.location.NanoAppFilter);
		method public int[] getContextHubHandles();
		method public android.hardware.location.ContextHubInfo getContextHubInfo(int);
		method public android.hardware.location.NanoAppInstanceInfo getNanoAppInstanceInfo(int);
		@@ -15299,8 +15299,9 @@ package android.hardware.location {
		field public static final int MSG_UNLOAD_NANO_APP = 2; // 0x2
		}

		public abstract class ContextHubManager.ContextHubCallback {
		ctor public ContextHubManager.ContextHubCallback();
		public static abstract class ContextHubManager.ContextHubCallback {
		ctor protected ContextHubManager.ContextHubCallback();
		method public abstract void onMessageReceipt(int, int, android.hardware.location.ContextHubMessage);
		}

		public class ContextHubMessage {

core/java/android/hardware/location/ContextHubManager.java

+45 −81

Original line number	Diff line number	Diff line
		@@ -15,13 +15,8 @@
		*/
		package android.hardware.location;

		import android.Manifest;
		import android.annotation.SystemApi;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.ServiceConnection;
		import android.hardware.location.ContextHubService;
		import android.hardware.location.NanoAppInstanceInfo;
		import android.os.Handler;
		import android.os.IBinder;
		import android.os.Looper;
		@@ -29,19 +24,11 @@ import android.os.RemoteException;
		import android.os.ServiceManager;
		import android.util.Log;

		import java.util.ArrayList;
		import java.util.HashMap;
		import java.util.concurrent.CountDownLatch;
		import java.util.concurrent.TimeUnit;

		/**
		* A class that exposes the Context hubs on a device to
		* applicaions.
		* A class that exposes the Context hubs on a device to applications.
		*
		* Please not that this class is not expected to be used by
		* unbundled applications. Also, calling applications are
		* expected to have LOCTION_HARDWARE premissions to use this
		* class.
		* Please note that this class is not expected to be used by unbundled applications. Also, calling
		* applications are expected to have LOCATION_HARDWARE permissions to use this class.
		*
		* @hide
		*/
		@@ -49,21 +36,14 @@ import java.util.concurrent.TimeUnit;
		public final class ContextHubManager {

		private static final String TAG = "ContextHubManager";
		private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
		private static final String HARDWARE_PERMISSION = Manifest.permission.LOCATION_HARDWARE;
		private static final String ENFORCE_HW_PERMISSION_MESSAGE = "Permission '"
		+ HARDWARE_PERMISSION + "' not granted to access ContextHub Hardware";

		private final Context mContext;
		private final Looper mMainLooper;
		private IContextHubService mContextHubService;
		private boolean mContextHubConnected;
		private ContextHubCallback mCallback;
		private Handler mCallbackHandler;

		/**
		* A special context hub identifer meaning any possible hub on
		* the system.
		* A special context hub identifier meaning any possible hub on the system.
		*/
		public static final int ANY_HUB = -1;
		/**
		@@ -80,19 +60,24 @@ public final class ContextHubManager {
		public static final int MSG_DATA_SEND = 3;

		/**
		* an interface to receive asynchronous communication from the context hub
		* An interface to receive asynchronous communication from the context hub.
		*/
		public abstract class ContextHubCallback {
		public abstract static class ContextHubCallback {
		protected ContextHubCallback() {}

		/**
		* callback function called on message receipt from context hub
		* Callback function called on message receipt from context hub.
		*
		* @param hubId id of the hub of the message
		* @param nanoAppId identifier for the app that sent the message
		* @param msg the context hub message
		* @param hubHandle Handle (system-wide unique identifier) of the hub of the message.
		* @param nanoAppHandle Handle (unique identifier) for the app that sent the message.
		* @param message The context hub message.
		*
		* @see ContextHubMessage
		*/
		abstract void onMessageReceipt(int hubId, int nanoAppId, ContextHubMessage msg);
		public abstract void onMessageReceipt(
		int hubHandle,
		int nanoAppHandle,
		ContextHubMessage message);
		}

		/**
		@@ -104,7 +89,7 @@ public final class ContextHubManager {
		try {
		retVal = getBinder().getContextHubHandles();
		} catch (RemoteException e) {
		Log.e(TAG, "Could not fetch context hub handles :" + e.toString());
		Log.e(TAG, "Could not fetch context hub handles : " + e);
		}
		return retVal;
		}
		@@ -112,25 +97,24 @@ public final class ContextHubManager {
		/**
		* Get more information about a specific hub.
		*
		* @param contexthubHandle Handle of context hub
		*
		* @return ContextHubInfo returned information about the hub
		* @param hubHandle Handle (system-wide unique identifier) of a context hub.
		* @return ContextHubInfo Information about the requested context hub.
		*
		* @see ContextHubInfo
		*/
		public ContextHubInfo getContextHubInfo(int contexthubHandle) {
		public ContextHubInfo getContextHubInfo(int hubHandle) {
		ContextHubInfo retVal = null;
		try {
		retVal = getBinder().getContextHubInfo(contexthubHandle);
		retVal = getBinder().getContextHubInfo(hubHandle);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not fetch context hub info :" + e.toString());
		Log.e(TAG, "Could not fetch context hub info :" + e);
		}

		return retVal;
		}

		/**
		* Load a nanoapp on a specified context hub
		* Load a nano app on a specified context hub.
		*
		* @param hubHandle handle of context hub to load the app on.
		* @param app the nanoApp to load on the hub
		@@ -149,7 +133,7 @@ public final class ContextHubManager {
		try {
		retVal = getBinder().loadNanoApp(hubHandle, app);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not fetch load nanoApp :" + e.toString());
		Log.e(TAG, "Could not fetch load nanoApp :" + e);
		}

		return retVal;
		@@ -158,17 +142,17 @@ public final class ContextHubManager {
		/**
		* Unload a specified nanoApp
		*
		* @param nanoAppInstanceHandle handle of the nanoApp to load
		* @param nanoAppHandle handle of the nanoApp to load
		*
		* @return int 0 on success, -1 otherewise
		* @return int 0 on success, -1 otherwise
		*/
		public int unloadNanoApp(int nanoAppInstanceHandle) {
		public int unloadNanoApp(int nanoAppHandle) {
		int retVal = -1;

		try {
		retVal = getBinder().unloadNanoApp(nanoAppInstanceHandle);
		retVal = getBinder().unloadNanoApp(nanoAppHandle);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not fetch unload nanoApp :" + e.toString());
		Log.e(TAG, "Could not fetch unload nanoApp :" + e);
		}

		return retVal;
		@@ -177,20 +161,18 @@ public final class ContextHubManager {
		/**
		* get information about the nano app instance
		*
		* @param nanoAppInstanceHandle handle of the nanoAppInstance
		*
		* @return NanoAppInstanceInfo Inforamtion about the nano app
		* instance.
		* @param nanoAppHandle handle of the nanoAppInstance
		* @return NanoAppInstanceInfo Information about the nano app instance.
		*
		* @see NanoAppInstanceInfo
		*/
		public NanoAppInstanceInfo getNanoAppInstanceInfo(int nanoAppInstanceHandle) {
		public NanoAppInstanceInfo getNanoAppInstanceInfo(int nanoAppHandle) {
		NanoAppInstanceInfo retVal = null;

		try {
		retVal = getBinder().getNanoAppInstanceInfo(nanoAppInstanceHandle);
		retVal = getBinder().getNanoAppInstanceInfo(nanoAppHandle);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not fetch nanoApp info :" + e.toString());
		Log.e(TAG, "Could not fetch nanoApp info :" + e);
		}

		return retVal;
		@@ -204,33 +186,24 @@ public final class ContextHubManager {
		*
		* @see NanoAppFilter
		*
		* @return Integer[] Array of handles to any found nano apps
		* @return int[] Array of handles to any found nano apps
		*/
		public Integer[] findNanoAppOnHub(int hubHandle, NanoAppFilter filter) {
		int[] temp;
		Integer[] retVal = null;

		public int[] findNanoAppOnHub(int hubHandle, NanoAppFilter filter) {
		int[] retVal = null;
		try {
		temp = getBinder().findNanoAppOnHub(hubHandle, filter);
		retVal = new Integer[temp.length];
		for (int i = 0; i < temp.length; i++) {
		retVal[i] = temp[i];
		}
		retVal = getBinder().findNanoAppOnHub(hubHandle, filter);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not query nanoApp instance :" + e.toString());
		Log.e(TAG, "Could not query nanoApp instance :" + e);
		}

		return retVal;
		}

		/**
		* Send a message to a spcific nano app instance on a context
		* hub
		*
		* Send a message to a specific nano app instance on a context hub.
		*
		* @param hubHandle handle of the hub to send the message to
		* @param nanoAppHandle handle of the nano app to send to
		* @param msg Message to be sent
		* @param message Message to be sent
		*
		* @see ContextHubMessage
		*
		@@ -251,7 +224,6 @@ public final class ContextHubManager {
		/**
		* Set a callback to receive messages from the context hub
		*
		*
		* @param callback Callback object
		*
		* @see ContextHubCallback
		@@ -265,9 +237,8 @@ public final class ContextHubManager {
		/**
		* Set a callback to receive messages from the context hub
		*
		*
		* @param callback Callback object
		* @param hander Hander object
		* @param handler Handler object
		*
		* @see ContextHubCallback
		*
		@@ -286,8 +257,7 @@ public final class ContextHubManager {
		}

		/**
		* Unregister a callback for receive messages from the context
		* hub
		* Unregister a callback for receive messages from the context hub.
		*
		* @see ContextHubCallback
		*
		@@ -308,14 +278,10 @@ public final class ContextHubManager {
		return 0;
		}

		private void checkPermissions() {
		mContext.enforceCallingPermission(HARDWARE_PERMISSION, ENFORCE_HW_PERMISSION_MESSAGE);
		}

		private IContextHubCallback.Stub mClientCallback = new IContextHubCallback.Stub() {
		@Override
		public void onMessageReceipt(final int hubId, final int nanoAppId,
		final ContextHubMessage message) throws RemoteException {
		final ContextHubMessage message) {
		if (mCallback != null) {
		synchronized(this) {
		final ContextHubCallback callback = mCallback;
		@@ -336,8 +302,6 @@ public final class ContextHubManager {

		/** @hide */
		public ContextHubManager(Context context, Looper mainLooper) {
		checkPermissions();
		mContext = context;
		mMainLooper = mainLooper;

		IBinder b = ServiceManager.getService(ContextHubService.CONTEXTHUB_SERVICE);
		@@ -347,7 +311,7 @@ public final class ContextHubManager {
		try {
		getBinder().registerCallback(mClientCallback);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not register callback:" + e.toString());
		Log.e(TAG, "Could not register callback:" + e);
		}

		} else {

core/java/android/hardware/location/ContextHubService.java

+24 −9

Original line number	Diff line number	Diff line
		@@ -16,10 +16,8 @@

		package android.hardware.location;

		import android.app.Service;
		import android.Manifest;
		import android.content.Context;
		import android.content.Intent;
		import android.os.IBinder;
		import android.os.RemoteException;
		import android.util.Log;

		@@ -32,6 +30,9 @@ import java.util.HashMap;
		public class ContextHubService extends IContextHubService.Stub {

		private static final String TAG = "ContextHubService";
		private static final String HARDWARE_PERMISSION = Manifest.permission.LOCATION_HARDWARE;
		private static final String ENFORCE_HW_PERMISSION_MESSAGE = "Permission '"
		+ HARDWARE_PERMISSION + "' not granted to access ContextHub Hardware";

		public static final String CONTEXTHUB_SERVICE = "contexthub_service";

		@@ -56,6 +57,7 @@ public class ContextHubService extends IContextHubService.Stub {

		@Override
		public int registerCallback(IContextHubCallback callback) throws RemoteException{
		checkPermissions();
		mCallback = callback;
		return 0;
		}
		@@ -83,6 +85,7 @@ public class ContextHubService extends IContextHubService.Stub {

		@Override
		public int[] getContextHubHandles() throws RemoteException {
		checkPermissions();
		int [] returnArray = new int[mContextHubInfo.length];

		for (int i = 0; i < returnArray.length; ++i) {
		@@ -96,6 +99,7 @@ public class ContextHubService extends IContextHubService.Stub {

		@Override
		public ContextHubInfo getContextHubInfo(int contextHubHandle) throws RemoteException {
		checkPermissions();
		contextHubHandle -= 1;
		if (!(contextHubHandle >= 0 && contextHubHandle < mContextHubInfo.length)) {
		return null; // null means fail
		@@ -106,6 +110,7 @@ public class ContextHubService extends IContextHubService.Stub {

		@Override
		public int loadNanoApp(int contextHubHandle, NanoApp app) throws RemoteException {
		checkPermissions();
		contextHubHandle -= 1;

		if (!(contextHubHandle >= 0 && contextHubHandle < mContextHubInfo.length)) {
		@@ -125,6 +130,7 @@ public class ContextHubService extends IContextHubService.Stub {

		@Override
		public int unloadNanoApp(int nanoAppInstanceHandle) throws RemoteException {
		checkPermissions();
		NanoAppInstanceInfo info = mNanoAppHash.get(nanoAppInstanceHandle);
		if (info == null) {
		return -1; //means failed
		@@ -140,7 +146,9 @@ public class ContextHubService extends IContextHubService.Stub {
		}

		@Override
		public NanoAppInstanceInfo getNanoAppInstanceInfo(int nanoAppInstanceHandle) throws RemoteException {
		public NanoAppInstanceInfo getNanoAppInstanceInfo(int nanoAppInstanceHandle)
		throws RemoteException {
		checkPermissions();
		// This assumes that all the nanoAppInfo is current. This is reasonable
		// for the use cases for tightly controlled nanoApps.
		if (mNanoAppHash.containsKey(nanoAppInstanceHandle)) {
		@@ -152,6 +160,7 @@ public class ContextHubService extends IContextHubService.Stub {

		@Override
		public int[] findNanoAppOnHub(int hubHandle, NanoAppFilter filter) throws RemoteException {
		checkPermissions();
		ArrayList<Integer> foundInstances = new ArrayList<Integer>();

		for(Integer nanoAppInstance : mNanoAppHash.keySet()) {
		@@ -171,7 +180,9 @@ public class ContextHubService extends IContextHubService.Stub {
		}

		@Override
		public int sendMessage(int hubHandle, int nanoAppHandle, ContextHubMessage msg) throws RemoteException {
		public int sendMessage(int hubHandle, int nanoAppHandle, ContextHubMessage msg)
		throws RemoteException {
		checkPermissions();
		int[] msgHeader = new int[8];
		msgHeader[0] = ContextHubManager.MSG_DATA_SEND;
		msgHeader[1] = hubHandle;
		@@ -181,5 +192,9 @@ public class ContextHubService extends IContextHubService.Stub {

		return nativeSendMessage(msgHeader, msg.getData());
		}

		private void checkPermissions() {
		mContext.enforceCallingPermission(HARDWARE_PERMISSION, ENFORCE_HW_PERMISSION_MESSAGE);
		}
		}