Remove HotwordRecognition APIs

- and its usage from Keyguard

Bug: 10708010
Change-Id: Ic4a695a1d0e9312706a3b4ff01e59e2567b6ad9c

11 files changed, 0 insertions, 1039 deletions

diff --git a/Android.mk b/Android.mk
index 30b17f5..5d02982 100644
--- a/Android.mk
+++ b/Android.mk
@@ -195,8 +195,6 @@ LOCAL_SRC_FILES += \
 	core/java/android/view/IWindowSession.aidl \
 	core/java/android/speech/IRecognitionListener.aidl \
 	core/java/android/speech/IRecognitionService.aidl \
-        core/java/android/speech/hotword/IHotwordRecognitionListener.aidl \
-	core/java/android/speech/hotword/IHotwordRecognitionService.aidl \
 	core/java/android/speech/tts/ITextToSpeechCallback.aidl \
 	core/java/android/speech/tts/ITextToSpeechService.aidl \
 	core/java/com/android/internal/app/IAppOpsCallback.aidl \
diff --git a/api/current.txt b/api/current.txt
index 218b325..07e69e9 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -22810,35 +22810,6 @@ package android.speech {
 
 }
 
-package android.speech.hotword {
-
-  public abstract class HotwordRecognitionService extends android.app.Service {
-    ctor public HotwordRecognitionService();
-    method public android.os.IBinder onBind(android.content.Intent);
-    method public abstract void onStartHotwordRecognition(android.speech.hotword.HotwordRecognitionService.Callback);
-    method public abstract void onStopHotwordRecognition();
-    field public static final int ERROR_AUDIO = 1; // 0x1
-    field public static final int ERROR_CLIENT = 4; // 0x4
-    field public static final int ERROR_FAILED = 3; // 0x3
-    field public static final int ERROR_RECOGNIZER_BUSY = 2; // 0x2
-    field public static final int ERROR_SERVICE_ALREADY_STARTED = 6; // 0x6
-    field public static final int ERROR_TIMEOUT = 5; // 0x5
-    field public static final int ERROR_UNAVAILABLE = 7; // 0x7
-    field public static final int EVENT_TYPE_PROMPT_CHANGED = 1; // 0x1
-    field public static final java.lang.String KEY_PROMPT_TEXT = "prompt_text";
-    field public static final java.lang.String SERVICE_INTERFACE = "android.speech.hotword.HotwordRecognitionService";
-  }
-
-  public static class HotwordRecognitionService.Callback {
-    method public void onError(int) throws android.os.RemoteException;
-    method public void onHotwordEvent(int, android.os.Bundle) throws android.os.RemoteException;
-    method public void onHotwordRecognitionStarted() throws android.os.RemoteException;
-    method public void onHotwordRecognitionStopped() throws android.os.RemoteException;
-    method public void onHotwordRecognized(android.content.Intent) throws android.os.RemoteException;
-  }
-
-}
-
 package android.speech.tts {
 
   public abstract interface SynthesisCallback {
diff --git a/core/java/android/speech/hotword/HotwordRecognitionListener.java b/core/java/android/speech/hotword/HotwordRecognitionListener.java
deleted file mode 100644
index 8a32654..0000000
--- a/core/java/android/speech/hotword/HotwordRecognitionListener.java
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2013 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.speech.hotword;
-
-import android.content.Intent;
-import android.os.Bundle;
-
-/**
- * Used for receiving notifications from the HotwordRecognitionService when the
- * hotword recognition related events occur.
- * All the callbacks are executed on the application main thread.
- * {@hide}
- */
-public interface HotwordRecognitionListener {
-    /**
-     * Called when the service starts listening for hotword.
-     */
-    void onHotwordRecognitionStarted();
-
-    /**
-     * Called when the service stops listening for hotword.
-     */
-    void onHotwordRecognitionStopped();
-
-    /**
-     * Called on an event of interest to the client.
-     *
-     * @param eventType the event type.
-     * @param eventBundle a Bundle containing the hotword event(s).
-     */
-    void onHotwordEvent(int eventType, Bundle eventBundle);
-
-    /**
-     * Called back when hotword is detected.
-     *
-     * @param intent for the activity to launch, post hotword detection.
-     */
-    void onHotwordRecognized(Intent intent);
-
-    /**
-     * Called when the HotwordRecognitionService encounters an error.
-     *
-     * @param errorCode the error code describing the error that was encountered.
-     */
-    void onHotwordError(int errorCode);
-}
\ No newline at end of file
diff --git a/core/java/android/speech/hotword/HotwordRecognitionService.java b/core/java/android/speech/hotword/HotwordRecognitionService.java
deleted file mode 100644
index 1cba281..0000000
--- a/core/java/android/speech/hotword/HotwordRecognitionService.java
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * Copyright (C) 2013 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.speech.hotword;
-
-import android.annotation.SdkConstant;
-import android.annotation.SdkConstant.SdkConstantType;
-import android.app.PendingIntent;
-import android.app.Service;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.IBinder;
-import android.os.Message;
-import android.os.RemoteException;
-import android.util.Log;
-
-/**
- * This class provides a base class for hotword detection service implementations.
- * This class should be extended only if you wish to implement a new hotword recognizer.
- */
-public abstract class HotwordRecognitionService extends Service {
-    /**
-     * The {@link Intent} that must be declared as handled by the service.
-     */
-    @SdkConstant(SdkConstantType.SERVICE_ACTION)
-    public static final String SERVICE_INTERFACE =
-            "android.speech.hotword.HotwordRecognitionService";
-
-    /** Log messages identifier */
-    private static final String TAG = "HotwordRecognitionService";
-
-    /** Debugging flag */
-    private static final boolean DBG = false;
-
-    /**
-     * Key used to retrieve a string to be displayed to the user.
-     */
-    public static final String KEY_PROMPT_TEXT = "prompt_text";
-
-    /**
-     * Event type used to indicate to the user that the prompt for
-     * hotword recognition has changed.
-     */
-    public static final int EVENT_TYPE_PROMPT_CHANGED = 1;
-
-    /** Audio recording error. */
-    public static final int ERROR_AUDIO = 1;
-
-    /** RecognitionService busy. */
-    public static final int ERROR_RECOGNIZER_BUSY = 2;
-
-    /** This indicates a permanent failure and the clients shouldn't retry on this */
-    public static final int ERROR_FAILED = 3;
-
-    /** Client-side errors */
-    public static final int ERROR_CLIENT = 4;
-
-    /** The service timed out */
-    public static final int ERROR_TIMEOUT = 5;
-
-    /** The service received concurrent start calls */
-    public static final int ERROR_SERVICE_ALREADY_STARTED = 6;
-
-    /** Hotword recognition is unavailable on the device */
-    public static final int ERROR_UNAVAILABLE = 7;
-
-    private static final int MSG_START_RECOGNITION = 1;
-    private static final int MSG_STOP_RECOGNITION = 2;
-
-    /**
-     * The current callback of an application that invoked the
-     * {@link HotwordRecognitionService#onStartHotwordRecognition(Callback)} method
-     */
-    private Callback mCurrentCallback = null;
-
-    // Handle the client dying.
-    private final IBinder.DeathRecipient mCallbackDeathRecipient = new IBinder.DeathRecipient() {
-        @Override
-        public void binderDied() {
-            if (DBG) Log.i(TAG, "HotwordRecognitionService listener died");
-            mCurrentCallback = null;
-        }
-    };
-
-    private final Handler mHandler = new Handler() {
-        @Override
-        public void handleMessage(Message msg) {
-            switch (msg.what) {
-                case MSG_START_RECOGNITION:
-                    dispatchStartRecognition((IHotwordRecognitionListener) msg.obj);
-                    break;
-                case MSG_STOP_RECOGNITION:
-                    dispatchStopRecognition((IHotwordRecognitionListener) msg.obj);
-                    break;
-            }
-        }
-    };
-
-    /** Binder of the hotword recognition service */
-    private RecognitionServiceBinder mBinder = new RecognitionServiceBinder(this);
-
-    private void dispatchStartRecognition(IHotwordRecognitionListener listener) {
-        if (mCurrentCallback == null) {
-            if (DBG) Log.d(TAG, "created new mCurrentCallback, listener = " + listener.asBinder());
-            try {
-                listener.asBinder().linkToDeath(mCallbackDeathRecipient, 0);
-            } catch (RemoteException e) {
-                if (DBG) Log.d(TAG, "listener died before linkToDeath()");
-            }
-            mCurrentCallback = new Callback(listener);
-            HotwordRecognitionService.this.onStartHotwordRecognition(mCurrentCallback);
-        } else {
-            try {
-                listener.onHotwordError(ERROR_RECOGNIZER_BUSY);
-            } catch (RemoteException e) {
-                if (DBG) Log.d(TAG, "onError call from startRecognition failed");
-            }
-            if (DBG) Log.d(TAG, "concurrent startRecognition received - ignoring this call");
-        }
-    }
-
-    private void dispatchStopRecognition(IHotwordRecognitionListener listener) {
-        try {
-            if (mCurrentCallback == null) {
-                listener.onHotwordError(ERROR_CLIENT);
-                Log.w(TAG, "stopRecognition called with no preceding startRecognition - ignoring");
-            } else if (mCurrentCallback.mListener.asBinder() != listener.asBinder()) {
-                listener.onHotwordError(ERROR_RECOGNIZER_BUSY);
-                Log.w(TAG, "stopRecognition called by a different caller - ignoring");
-            } else { // the correct state
-                mCurrentCallback.onHotwordRecognitionStopped();
-                mCurrentCallback = null;
-                HotwordRecognitionService.this.onStopHotwordRecognition();
-            }
-        } catch (RemoteException e) { // occurs if onError fails
-            if (DBG) Log.d(TAG, "onError call from stopRecognition failed");
-        }
-    }
-
-    @Override
-    public IBinder onBind(final Intent intent) {
-        if (DBG) Log.d(TAG, "onBind, intent=" + intent);
-        return mBinder;
-    }
-
-    @Override
-    public void onDestroy() {
-        if (DBG) Log.d(TAG, "onDestroy");
-        if (mCurrentCallback != null) {
-            mCurrentCallback.mListener.asBinder().unlinkToDeath(mCallbackDeathRecipient, 0);
-            mCurrentCallback = null;
-        }
-        mBinder.clearReference();
-        super.onDestroy();
-    }
-
-    /**
-     * Notifies the service to start a recognition.
-     *
-     * @param callback that receives the callbacks from the service.
-     */
-    public abstract void onStartHotwordRecognition(Callback callback);
-
-    /**
-     * Notifies the service to stop recognition.
-     */
-    public abstract void onStopHotwordRecognition();
-
-    /** Binder of the hotword recognition service */
-    private static class RecognitionServiceBinder extends IHotwordRecognitionService.Stub {
-        private HotwordRecognitionService mInternalService;
-
-        public RecognitionServiceBinder(HotwordRecognitionService service) {
-            mInternalService = service;
-        }
-
-        public void startHotwordRecognition(IHotwordRecognitionListener listener) {
-            if (DBG) Log.d(TAG, "startRecognition called by: " + listener.asBinder());
-            if (mInternalService != null && mInternalService.checkPermissions(listener)) {
-                mInternalService.mHandler.sendMessage(
-                        Message.obtain(mInternalService.mHandler, MSG_START_RECOGNITION, listener));
-            }
-        }
-
-        public void stopHotwordRecognition(IHotwordRecognitionListener listener) {
-            if (DBG) Log.d(TAG, "stopRecognition called by: " + listener.asBinder());
-            if (mInternalService != null && mInternalService.checkPermissions(listener)) {
-                mInternalService.mHandler.sendMessage(
-                        Message.obtain(mInternalService.mHandler, MSG_STOP_RECOGNITION, listener));
-            }
-        }
-
-        private void clearReference() {
-            mInternalService = null;
-        }
-    }
-
-    /**
-     * Checks whether the caller has sufficient permissions
-     *
-     * @param listener to send the error message to in case of error.
-     * @return {@code true} if the caller has enough permissions, {@code false} otherwise.
-     */
-    private boolean checkPermissions(IHotwordRecognitionListener listener) {
-        if (DBG) Log.d(TAG, "checkPermissions");
-        if (checkCallingOrSelfPermission(android.Manifest.permission.HOTWORD_RECOGNITION) ==
-                PackageManager.PERMISSION_GRANTED) {
-            return true;
-        }
-        try {
-            Log.e(TAG, "Recognition service called without HOTWORD_RECOGNITION permissions");
-            listener.onHotwordError(ERROR_FAILED);
-        } catch (RemoteException e) {
-            Log.e(TAG, "onHotwordError(ERROR_FAILED) message failed", e);
-        }
-        return false;
-    }
-
-    /**
-     * This class acts passes on the callbacks received from the Hotword service
-     * to the listener.
-     */
-    public static class Callback {
-        private final IHotwordRecognitionListener mListener;
-
-        private Callback(IHotwordRecognitionListener listener) {
-            mListener = listener;
-        }
-
-        /**
-         * Called when the service starts listening for hotword.
-         */
-        public void onHotwordRecognitionStarted() throws RemoteException {
-            mListener.onHotwordRecognitionStarted();
-        }
-
-        /**
-         * Called when the service starts listening for hotword.
-         */
-        public void onHotwordRecognitionStopped() throws RemoteException {
-            mListener.onHotwordRecognitionStopped();
-        }
-
-        /**
-         * Called on an event of interest to the client.
-         *
-         * @param eventType the event type.
-         * @param eventBundle a Bundle containing the hotword event(s).
-         */
-        public void onHotwordEvent(int eventType, Bundle eventBundle) throws RemoteException {
-            mListener.onHotwordEvent(eventType, eventBundle);
-        }
-
-        /**
-         * Called back when hotword is detected.
-         *
-         * @param activityIntent for the activity to launch, post hotword detection.
-         */
-        public void onHotwordRecognized(Intent activityIntent) throws RemoteException {
-            mListener.onHotwordRecognized(activityIntent);
-        }
-
-        /**
-         * Called when the HotwordRecognitionService encounters an error.
-         *
-         * @param errorCode the error code describing the error that was encountered.
-         */
-        public void onError(int errorCode) throws RemoteException {
-            mListener.onHotwordError(errorCode);
-        }
-    }
-}
diff --git a/core/java/android/speech/hotword/HotwordRecognizer.java b/core/java/android/speech/hotword/HotwordRecognizer.java
deleted file mode 100644
index 9f05f31..0000000
--- a/core/java/android/speech/hotword/HotwordRecognizer.java
+++ /dev/null
@@ -1,362 +0,0 @@
-/*
- * Copyright (C) 2013 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.speech.hotword;
-
-import android.app.PendingIntent;
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.Intent;
-import android.content.ServiceConnection;
-import android.content.pm.ApplicationInfo;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.IBinder;
-import android.os.Looper;
-import android.os.Message;
-import android.os.RemoteException;
-import android.provider.Settings;
-import android.text.TextUtils;
-import android.util.Log;
-
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Queue;
-
-/**
- * This class provides access to the Hotword recognition service.
- * This class's methods must be invoked on the main application thread.
- * {@hide}
- */
-public class HotwordRecognizer {
-    /** DEBUG value to enable verbose debug prints */
-    private final static boolean DBG = false;
-
-    /** Log messages identifier */
-    private static final String TAG = "HotwordRecognizer";
-
-    /** action codes */
-    private static final int MSG_START = 1;
-    private static final int MSG_STOP = 2;
-
-    /** The underlying HotwordRecognitionService endpoint */
-    private IHotwordRecognitionService mService;
-
-    /** The connection to the actual service */
-    private Connection mConnection;
-
-    /** Context with which the manager was created */
-    private final Context mContext;
-
-    /** Component to direct service intent to */
-    private final ComponentName mServiceComponent;
-
-    /** Handler that will execute the main tasks */
-    private Handler mHandler = new Handler() {
-        @Override
-        public void handleMessage(Message msg) {
-            switch (msg.what) {
-                case MSG_START:
-                    handleStartRecognition();
-                    break;
-                case MSG_STOP:
-                    handleStopRecognition();
-                    break;
-            }
-        }
-    };
-
-    /**
-     * Temporary queue, saving the messages until the connection will be established, afterwards,
-     * only mHandler will receive the messages
-     */
-    private final Queue<Message> mPendingTasks = new LinkedList<Message>();
-
-    /** The Listener that will receive all the callbacks */
-    private final InternalListener mListener = new InternalListener();
-
-    /**
-     * Checks whether a hotword recognition service is available on the system. If this method
-     * returns {@code false}, {@link HotwordRecognizer#createHotwordRecognizer(Context)} will
-     * fail.
-     *
-     * @param context with which {@code HotwordRecognizer} will be created
-     * @return {@code true} if recognition is available, {@code false} otherwise
-     */
-    public static boolean isHotwordRecognitionAvailable(final Context context) {
-        final List<ResolveInfo> list = context.getPackageManager().queryIntentServices(
-                new Intent(HotwordRecognitionService.SERVICE_INTERFACE), 0);
-        return list != null && list.size() != 0;
-    }
-
-    /**
-     * Factory method to create a new {@code HotwordRecognizer}.
-     *
-     * @param context in which to create {@code HotwordRecognizer}
-     * @return a new {@code HotwordRecognizer}
-     */
-    public static HotwordRecognizer createHotwordRecognizer(final Context context) {
-        ComponentName serviceComponent = null;
-        // Resolve to a default ComponentName.
-        final List<ResolveInfo> list = context.getPackageManager().queryIntentServices(
-                new Intent(HotwordRecognitionService.SERVICE_INTERFACE), 0);
-        for (int i = 0; i < list.size(); i++) {
-            final ResolveInfo ri = list.get(i);
-            if (!ri.serviceInfo.enabled) {
-                continue;
-            }
-            if ((ri.serviceInfo.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM)
-                    != PackageManager.MATCH_DEFAULT_ONLY) {
-                serviceComponent = new ComponentName(
-                        ri.serviceInfo.packageName, ri.serviceInfo.name);
-                break;
-            }
-        }
-        // If all else fails, pick the first one.
-        if (serviceComponent == null && !list.isEmpty()) {
-            serviceComponent =  new ComponentName(
-                    list.get(0).serviceInfo.packageName, list.get(0).serviceInfo.name);
-        }
-        return createHotwordRecognizer(context, serviceComponent);
-    }
-
-    /**
-     * Factory method to create a new {@code HotwordRecognizer}.
-     *
-     * Use this version of the method to specify a specific service to direct this
-     * {@link HotwordRecognizer} to. Normally you would not use this; use
-     * {@link #createHotwordRecognizer(Context)} instead to use the system default recognition
-     * service.
-     *
-     * @param context in which to create {@code HotwordRecognizer}
-     * @param serviceComponent the {@link ComponentName} of a specific service to direct this
-     *        {@code HotwordRecognizer} to
-     * @return a new {@code HotwordRecognizer}
-     */
-    public static HotwordRecognizer createHotwordRecognizer(
-            final Context context, final ComponentName serviceComponent) {
-        if (context == null) {
-            throw new IllegalArgumentException("Context cannot be null)");
-        }
-        checkIsCalledFromMainThread();
-        return new HotwordRecognizer(context, serviceComponent);
-    }
-
-    /**
-     * Starts recognizing hotword and sets the listener that will receive the callbacks.
-     *
-     * @param listener listener that will receive all the callbacks from the created
-     *        {@link HotwordRecognizer}, this must not be null.
-     */
-    public void startRecognition(HotwordRecognitionListener listener) {
-        checkIsCalledFromMainThread();
-        if (mConnection == null) { // first time connection
-            if (listener == null) {
-                throw new IllegalArgumentException("listener must not be null");
-            }
-
-            mConnection = new Connection();
-            Intent serviceIntent = new Intent(HotwordRecognitionService.SERVICE_INTERFACE);
-            mListener.mInternalListener = listener;
-
-            if (mServiceComponent == null) {
-                Log.e(TAG, "no selected voice recognition service");
-                mListener.onHotwordError(HotwordRecognitionService.ERROR_CLIENT);
-                return;
-            } else {
-                serviceIntent.setComponent(mServiceComponent);
-            }
-
-            if (!mContext.bindService(serviceIntent, mConnection, Context.BIND_AUTO_CREATE)) {
-                Log.e(TAG, "bind to recognition service failed");
-                mConnection = null;
-                mService = null;
-                mListener.onHotwordError(HotwordRecognitionService.ERROR_CLIENT);
-                return;
-            }
-            putMessage(Message.obtain(mHandler, MSG_START));
-        } else {
-            mListener.onHotwordError(HotwordRecognitionService.ERROR_SERVICE_ALREADY_STARTED);
-            return;
-        }
-    }
-
-    /**
-     * Stops recognizing hotword.
-     */
-    public void stopRecognition() {
-        checkIsCalledFromMainThread();
-        putMessage(Message.obtain(mHandler, MSG_STOP));
-    }
-
-    // Private constructor.
-    private HotwordRecognizer(Context context, ComponentName serviceComponent) {
-        mContext = context;
-        mServiceComponent = serviceComponent;
-    }
-
-    private void handleStartRecognition() {
-        if (!checkOpenConnection()) {
-            return;
-        }
-        try {
-            mService.startHotwordRecognition(mListener);
-            if (DBG) Log.d(TAG, "service startRecognition command succeeded");
-        } catch (final RemoteException e) {
-            Log.e(TAG, "startRecognition() failed", e);
-            mListener.onHotwordError(HotwordRecognitionService.ERROR_CLIENT);
-        }
-    }
-
-    private void handleStopRecognition() {
-        if (!checkOpenConnection()) {
-            return;
-        }
-        try {
-            mService.stopHotwordRecognition(mListener);
-            if (mConnection != null) {
-                mContext.unbindService(mConnection);
-            }
-            if (DBG) Log.d(TAG, "service stopRecognition command succeeded");
-        } catch (final RemoteException e) {
-            Log.e(TAG, "stopRecognition() failed", e);
-            mListener.onHotwordError(HotwordRecognitionService.ERROR_CLIENT);
-        } finally {
-            mPendingTasks.clear();
-            mService = null;
-            mConnection = null;
-            mListener.mInternalListener = null;
-        }
-    }
-
-    private boolean checkOpenConnection() {
-        if (mService != null) {
-            return true;
-        }
-        mListener.onHotwordError(HotwordRecognitionService.ERROR_CLIENT);
-        Log.e(TAG, "not connected to the recognition service");
-        return false;
-    }
-
-    private static void checkIsCalledFromMainThread() {
-        if (Looper.myLooper() != Looper.getMainLooper()) {
-            throw new RuntimeException(
-                    "HotwordRecognizer should be used only from the application's main thread");
-        }
-    }
-
-    private void putMessage(Message msg) {
-        if (mService == null) {
-            mPendingTasks.offer(msg);
-        } else {
-            mHandler.sendMessage(msg);
-        }
-    }
-
-    /**
-     * Basic ServiceConnection that records the mService variable.
-     * Additionally, on creation it invokes
-     * {@link IHotwordRecognitionService#startHotwordRecognition(IHotwordRecognitionListener)}.
-     */
-    private class Connection implements ServiceConnection {
-
-        public void onServiceConnected(final ComponentName name, final IBinder service) {
-            // always done on the application main thread, so no need to send message to mHandler
-            mService = IHotwordRecognitionService.Stub.asInterface(service);
-            if (DBG) Log.d(TAG, "onServiceConnected - Success");
-            while (!mPendingTasks.isEmpty()) {
-                mHandler.sendMessage(mPendingTasks.poll());
-            }
-        }
-
-        public void onServiceDisconnected(final ComponentName name) {
-            // always done on the application main thread, so no need to send message to mHandler
-            mService = null;
-            mConnection = null;
-            mPendingTasks.clear();
-            if (DBG) Log.d(TAG, "onServiceDisconnected - Success");
-        }
-    }
-
-    /**
-     * Internal wrapper of IHotwordRecognitionListener which will propagate the results to
-     * HotwordRecognitionListener.
-     */
-    private class InternalListener extends IHotwordRecognitionListener.Stub {
-        private HotwordRecognitionListener mInternalListener;
-
-        private final static int MSG_ON_START = 1;
-        private final static int MSG_ON_STOP = 2;
-        private final static int MSG_ON_EVENT = 3;
-        private final static int MSG_ON_RECOGNIZED = 4;
-        private final static int MSG_ON_ERROR = 5;
-
-        private final Handler mInternalHandler = new Handler() {
-            @Override
-            public void handleMessage(Message msg) {
-                if (mInternalListener == null) {
-                    return;
-                }
-                switch (msg.what) {
-                    case MSG_ON_START:
-                        mInternalListener.onHotwordRecognitionStarted();
-                        break;
-                    case MSG_ON_STOP:
-                        mInternalListener.onHotwordRecognitionStopped();
-                        break;
-                    case MSG_ON_EVENT:
-                        mInternalListener.onHotwordEvent(msg.arg1, (Bundle) msg.obj);
-                        break;
-                    case MSG_ON_RECOGNIZED:
-                        mInternalListener.onHotwordRecognized((Intent) msg.obj);
-                        break;
-                    case MSG_ON_ERROR:
-                        mInternalListener.onHotwordError((Integer) msg.obj);
-                        break;
-                }
-            }
-        };
-
-        @Override
-        public void onHotwordRecognitionStarted() throws RemoteException {
-            Message.obtain(mInternalHandler, MSG_ON_START).sendToTarget();
-        }
-
-        @Override
-        public void onHotwordRecognitionStopped() throws RemoteException {
-            Message.obtain(mInternalHandler, MSG_ON_STOP).sendToTarget();
-        }
-
-        @Override
-        public void onHotwordEvent(final int eventType, final Bundle params) {
-            Message.obtain(mInternalHandler, MSG_ON_EVENT, eventType, eventType, params)
-                    .sendToTarget();
-        }
-
-        @Override
-        public void onHotwordRecognized(Intent activityIntent) throws RemoteException {
-            Message.obtain(mInternalHandler, MSG_ON_RECOGNIZED, activityIntent)
-                    .sendToTarget();
-        }
-
-        @Override
-        public void onHotwordError(final int error) {
-            Message.obtain(mInternalHandler, MSG_ON_ERROR, error).sendToTarget();
-        }
-    }
-}
diff --git a/core/java/android/speech/hotword/IHotwordRecognitionListener.aidl b/core/java/android/speech/hotword/IHotwordRecognitionListener.aidl
deleted file mode 100644
index 4ea2e8e..0000000
--- a/core/java/android/speech/hotword/IHotwordRecognitionListener.aidl
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (C) 2013 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.speech.hotword;
-
-import android.content.Intent;
-import android.os.Bundle;
-
-/**
- * Listener for hotword detection events.
- * This indicates when the hotword was detected, and also notifies the
- * client of the intermediate events that may be used to show visual feedback
- * to the user.
- * {@hide}
- */
-oneway interface IHotwordRecognitionListener {
-    /**
-     * Called when the service starts listening for hotword.
-     */
-    void onHotwordRecognitionStarted();
-
-    /**
-     * Called when the service starts listening for hotword.
-     */
-    void onHotwordRecognitionStopped();
-
-    /**
-     * Called on an event of interest to the client.
-     *
-     * @param eventType the event type.
-     * @param eventBundle a Bundle containing the hotword event(s).
-     */
-    void onHotwordEvent(in int eventType, in Bundle eventBundle);
-
-    /**
-     * Called back when hotword is detected.
-     *
-     * @param intent for the activity to launch, post hotword detection.
-     */
-    void onHotwordRecognized(in Intent intent);
-
-    /**
-     * Called when the HotwordRecognitionService encounters an error.
-     *
-     * @param errorCode the error code describing the error that was encountered.
-     */
-    void onHotwordError(in int errorCode);
-}
diff --git a/core/java/android/speech/hotword/IHotwordRecognitionService.aidl b/core/java/android/speech/hotword/IHotwordRecognitionService.aidl
deleted file mode 100644
index 331d81c..0000000
--- a/core/java/android/speech/hotword/IHotwordRecognitionService.aidl
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2013 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.speech.hotword;
-
-import android.speech.hotword.IHotwordRecognitionListener;
-
-/**
- * A service interface to Hotword recognition.
- * Call startHotwordDetection with a listener when you want to begin detecting
- * hotword;
- * The service would automatically stop detection when hotword is detected;
- * So it's a create-once use-once service.
- * The service doesn't support nested calls to start detection and disallows them.
- * {@hide}
- */
-oneway interface IHotwordRecognitionService {
-    /**
-     * Start hotword recognition.
-     * The clients should rely on the callback to figure out if the detection was
-     * started.
-     *
-     * @param listener a listener to notify of hotword events.
-     */
-    void startHotwordRecognition(in IHotwordRecognitionListener listener);
-
-    /**
-     * Stop hotword recognition.
-     * Stops the recognition only if it was started by the same caller.
-     *
-     * @param listener a listener to notify of hotword events.
-     */
-    void stopHotwordRecognition(in IHotwordRecognitionListener listener);
-}
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 2e47928..83a0c56 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2444,13 +2444,6 @@
         android:description="@string/permdesc_accessNetworkConditions"
         android:protectionLevel="signature|system" />
 
-    <!-- Allows an application to request HotwordRecognition.
-         @hide This is not a third-party API (intended for system apps). -->
-    <permission android:name="android.permission.HOTWORD_RECOGNITION"
-        android:label="@string/permlab_hotwordRecognition"
-        android:description="@string/permdesc_hotwordRecognition"
-        android:protectionLevel="signature|system" />
-
     <!-- The system process is explicitly the only one allowed to launch the
          confirmation UI for full backup/restore -->
     <uses-permission android:name="android.permission.CONFIRM_FULL_BACKUP"/>
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 68acd8c..aa04bf6 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -1911,11 +1911,6 @@
     <!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
     <string name="permdesc_accessNetworkConditions">Allows an application to listen for observations on network conditions. Should never be needed for normal apps.</string>
 
-    <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
-    <string name="permlab_hotwordRecognition">request hotword recognition</string>
-    <!--  Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
-    <string name="permdesc_hotwordRecognition">Allows an application to request for hotword recognition. Should never be needed for normal apps.</string>
-
     <!-- Policy administration -->
 
     <!-- Title of policy access to limiting the user's password choices -->
diff --git a/packages/Keyguard/AndroidManifest.xml b/packages/Keyguard/AndroidManifest.xml
index d2c82c8..7d77c48 100644
--- a/packages/Keyguard/AndroidManifest.xml
+++ b/packages/Keyguard/AndroidManifest.xml
@@ -37,8 +37,6 @@
     <uses-permission android:name="android.permission.INTERNAL_SYSTEM_WINDOW" />
     <uses-permission android:name="android.permission.BIND_DEVICE_ADMIN" />
     <uses-permission android:name="android.permission.CHANGE_COMPONENT_ENABLED_STATE" />
-    <!-- Permission to perform hotword recognition -->
-    <uses-permission android:name="android.permission.HOTWORD_RECOGNITION" />
 
     <application android:label="@string/app_name"
         android:process="com.android.systemui"
diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardHostView.java b/packages/Keyguard/src/com/android/keyguard/KeyguardHostView.java
index 40a1af6..fbe3a9c 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardHostView.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardHostView.java
@@ -49,9 +49,6 @@ import android.os.SystemClock;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings;
-import android.speech.hotword.HotwordRecognitionListener;
-import android.speech.hotword.HotwordRecognitionService;
-import android.speech.hotword.HotwordRecognizer;
 import android.telephony.TelephonyManager;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -69,10 +66,6 @@ import java.util.List;
 
 public class KeyguardHostView extends KeyguardViewBase {
     private static final String TAG = "KeyguardHostView";
-    // Don't enable hotword on limited-memory devices.
-    private static final boolean ENABLE_HOTWORD = !ActivityManager.isLowRamDeviceStatic();
-    // Indicates if hotword is enabled, should it also be available on secure keyguard(s).
-    private static final boolean ENABLE_HOTWORD_SECURE = false;
 
     // Transport control states.
     static final int TRANSPORT_GONE = 0;
@@ -88,13 +81,6 @@ public class KeyguardHostView extends KeyguardViewBase {
     // Found in KeyguardAppWidgetPickActivity.java
     static final int APPWIDGET_HOST_ID = 0x4B455947;
 
-    // TODO: Fix this to be non-static.
-    // We need to be careful here to make stopRecognition calls on the same instance
-    // that started it. Since KeyguardHostView is a view, it keeps getting
-    // recreated every now and then, and unless we figure out a better way,
-    // this needs to be a static field.
-    private static HotwordRecognizer sHotwordClient;
-
     private final int MAX_WIDGETS = 5;
 
     private AppWidgetHost mAppWidgetHost;
@@ -218,11 +204,6 @@ public class KeyguardHostView extends KeyguardViewBase {
         if ((mDisabledFeatures & DevicePolicyManager.KEYGUARD_DISABLE_SECURE_CAMERA) != 0) {
             Log.v(TAG, "Keyguard secure camera disabled by DPM");
         }
-
-        // Create Hotword recognizer, for the first time.
-        if (ENABLE_HOTWORD && sHotwordClient == null) {
-            sHotwordClient = HotwordRecognizer.createHotwordRecognizer(getContext());
-        }
     }
 
     private void getInitialTransportState() {
@@ -320,21 +301,6 @@ public class KeyguardHostView extends KeyguardViewBase {
                 }
             }
         }
-        @Override
-        public void onPhoneStateChanged(int phoneState) {
-            // We need to stop hotword detection when a call state is not idle anymore.
-            if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)
-                    && TelephonyManager.CALL_STATE_IDLE != phoneState) {
-                if (DEBUG) Log.d(TAG, "Stopping due to call state not being idle");
-                maybeStopHotwordDetector();
-            }
-        }
-        @Override
-        public void onUserSwitching(int userId) {
-            if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)) {
-                maybeStopHotwordDetector();
-            }
-        }
     };
 
     private static final boolean isMusicPlaying(int playbackState) {
@@ -818,9 +784,6 @@ public class KeyguardHostView extends KeyguardViewBase {
             // If the alternate unlock was suppressed, it can now be safely
             // enabled because the user has left keyguard.
             KeyguardUpdateMonitor.getInstance(mContext).setAlternateUnlockEnabled(true);
-            if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)){
-                maybeStopHotwordDetector();
-            }
 
             // If there's a pending runnable because the user interacted with a widget
             // and we're leaving keyguard, then run it.
@@ -985,9 +948,6 @@ public class KeyguardHostView extends KeyguardViewBase {
 
         // Emulate Activity life cycle
         if (oldView != null) {
-            if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)) {
-                maybeStopHotwordDetector();
-            }
             oldView.onPause();
             oldView.setKeyguardCallback(mNullCallback); // ignore requests from old view
         }
@@ -1041,11 +1001,6 @@ public class KeyguardHostView extends KeyguardViewBase {
             mViewStateManager.showUsabilityHints();
         }
 
-        // Start hotword detection on insecure Keyguard.
-        if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)) {
-            maybeStartHotwordDetector();
-        }
-
         requestFocus();
     }
 
@@ -1068,11 +1023,6 @@ public class KeyguardHostView extends KeyguardViewBase {
             cameraPage.onScreenTurnedOff();
         }
 
-        // Stop hotword detection on insecure Keyguard.
-        if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)) {
-            maybeStopHotwordDetector();
-        }
-
         clearFocus();
     }
 
@@ -1157,9 +1107,6 @@ public class KeyguardHostView extends KeyguardViewBase {
         new CameraWidgetFrame.Callbacks() {
             @Override
             public void onLaunchingCamera() {
-                if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)) {
-                    maybeStopHotwordDetector();
-                }
                 setSliderHandleAlpha(0);
             }
 
@@ -1689,9 +1636,6 @@ public class KeyguardHostView extends KeyguardViewBase {
     }
 
     public void showAssistant() {
-        if (shouldRunHotwordInSecurityMode(mCurrentSecuritySelection)) {
-            maybeStopHotwordDetector();
-        }
         final Intent intent = ((SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE))
           .getAssistIntent(mContext, true, UserHandle.USER_CURRENT);
 
@@ -1706,125 +1650,4 @@ public class KeyguardHostView extends KeyguardViewBase {
         mActivityLauncher.launchActivityWithAnimation(
                 intent, false, opts.toBundle(), null, null);
     }
-
-
-    /**
-     * Start the hotword detector if:
-     * <li> ENABLE_HOTWORD is true and
-     * <li> Hotword detection is not already running and
-     * <li> TelephonyManager is in CALL_STATE_IDLE
-     * <li> and Screen is turned on.
-     */
-    private void maybeStartHotwordDetector() {
-        if (!ENABLE_HOTWORD) return;
-
-        if (sHotwordClient != null) {
-            if (DEBUG) Log.d(TAG, "maybeStartHotwordDetector()");
-            // Don't start hotword detection if the screen is off.
-            if (!mIsScreenOn) {
-                if (DEBUG) Log.d(TAG, "screen was off, not starting");
-                return;
-            }
-
-            KeyguardUpdateMonitor monitor = KeyguardUpdateMonitor.getInstance(getContext());
-            if (monitor.getPhoneState() != TelephonyManager.CALL_STATE_IDLE) {
-                if (DEBUG) Log.d(TAG, "Call underway, not starting");
-                return;
-            }
-
-            try {
-                sHotwordClient.startRecognition(mHotwordCallback);
-            } catch(Exception ex) {
-                // Don't allow hotword errors to make the keyguard unusable
-                Log.e(TAG, "Failed to start hotword recognition", ex);
-                sHotwordClient = null;
-            }
-        }
-    }
-
-    /**
-     * Stop hotword detector if:
-     * <li> ENABLE_HOTWORD is true
-     * <li> and hotword is running.
-     */
-    private void maybeStopHotwordDetector() {
-        if (!ENABLE_HOTWORD) return;
-
-        if (sHotwordClient != null) {
-            if (DEBUG) Log.d(TAG, "maybeStopHotwordDetector()");
-            try {
-                sHotwordClient.stopRecognition();
-            } catch(Exception ex) {
-                // Don't allow hotword errors to make the keyguard unusable
-                Log.e(TAG, "Failed to start hotword recognition", ex);
-            } finally {
-                sHotwordClient = null;
-            }
-        }
-    }
-
-    private final HotwordRecognitionListener mHotwordCallback = new HotwordRecognitionListener() {
-        private static final String TAG = "HotwordRecognitionListener";
-
-        public void onHotwordRecognitionStarted() {
-            if (DEBUG) Log.d(TAG, "onHotwordRecognitionStarted()");
-        }
-
-        public void onHotwordRecognitionStopped() {
-            if (DEBUG) Log.d(TAG, "onHotwordRecognitionStopped()");
-        }
-
-        public void onHotwordEvent(int eventType, Bundle eventBundle) {
-            if (DEBUG) Log.d(TAG, "onHotwordEvent: " + eventType);
-            if (eventType == HotwordRecognitionService.EVENT_TYPE_PROMPT_CHANGED) {
-                if (eventBundle != null
-                        && eventBundle.containsKey(HotwordRecognitionService.KEY_PROMPT_TEXT)) {
-                    new KeyguardMessageArea
-                        .Helper((View) getSecurityView(mCurrentSecuritySelection))
-                        .setMessage(eventBundle.getString(
-                                HotwordRecognitionService.KEY_PROMPT_TEXT),true);
-                }
-            }
-        }
-
-        public void onHotwordRecognized(final Intent intent) {
-            if (DEBUG) Log.d(TAG, "onHotwordRecognized");
-            maybeStopHotwordDetector();
-            // See if an activity can handle this intent.
-            if (getContext().getPackageManager().resolveActivity(intent, 0) == null)
-                return;
-            if (SecurityMode.None == mCurrentSecuritySelection) {
-                if (intent != null) {
-                    mActivityLauncher.launchActivity(intent, true, true, null, null);
-                }
-                mCallback.userActivity(0);
-            } else if (ENABLE_HOTWORD_SECURE && mLockPatternUtils.isSecure()) {
-                setOnDismissAction(new OnDismissAction() {
-                    @Override
-                    public boolean onDismiss() {
-                        if (intent != null) {
-                            mActivityLauncher.launchActivity(intent, true, true, null, null);
-                        }
-                        return false;
-                    }
-                });
-                getSecurityView(mCurrentSecuritySelection).showBouncer(0);
-            }
-        }
-
-        public void onHotwordError(int errorCode) {
-            if (DEBUG) Log.d(TAG, "onHotwordError: " + errorCode);
-            // TODO: Inspect the error code and handle the errors appropriately
-            // instead of blindly failing.
-            maybeStopHotwordDetector();
-        }
-    };
-
-    private boolean shouldRunHotwordInSecurityMode(SecurityMode mode) {
-        // Enable hotoword for insecure keyguard,
-        // and for pattern unlock if ENABLE_HOTWORD_SECURE is true.
-        return ENABLE_HOTWORD
-                && ((SecurityMode.None == mode)
-                        || (ENABLE_HOTWORD_SECURE && mLockPatternUtils.isSecure()));
-    }
 }