Merge "Revert "gtbs: Add Generic Telephone Bearer Service support""

1 files changed, 0 insertions, 911 deletions

diff --git a/framework/java/android/bluetooth/BluetoothLeCallControl.java b/framework/java/android/bluetooth/BluetoothLeCallControl.java
deleted file mode 100644
index 5283e08042..0000000000
--- a/framework/java/android/bluetooth/BluetoothLeCallControl.java
+++ /dev/null
@@ -1,911 +0,0 @@
-/*
- * Copyright 2019 HIMSA II K/S - www.himsa.com.
- * Represented by EHIMA - www.ehima.com
- *
- * 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.bluetooth;
-
-import android.Manifest;
-import android.annotation.IntDef;
-import android.annotation.NonNull;
-import android.annotation.Nullable;
-import android.annotation.RequiresPermission;
-import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
-import android.content.ComponentName;
-import android.content.Context;
-import android.os.Binder;
-import android.os.Handler;
-import android.os.IBinder;
-import android.os.Looper;
-import android.os.Message;
-import android.os.ParcelUuid;
-import android.os.RemoteException;
-import android.util.Log;
-import android.annotation.SuppressLint;
-
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.UUID;
-import java.util.concurrent.Executor;
-
-/**
- * This class provides the APIs to control the Call Control profile.
- *
- * <p>
- * This class provides Bluetooth Telephone Bearer Service functionality,
- * allowing applications to expose a GATT Service based interface to control the
- * state of the calls by remote devices such as LE audio devices.
- *
- * <p>
- * BluetoothLeCallControl is a proxy object for controlling the Bluetooth Telephone Bearer
- * Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get the
- * BluetoothLeCallControl proxy object.
- *
- * @hide
- */
-public final class BluetoothLeCallControl implements BluetoothProfile {
-    private static final String TAG = "BluetoothLeCallControl";
-    private static final boolean DBG = true;
-    private static final boolean VDBG = false;
-
-    /** @hide */
-    @IntDef(prefix = "RESULT_", value = {
-            RESULT_SUCCESS,
-            RESULT_ERROR_UNKNOWN_CALL_ID,
-            RESULT_ERROR_INVALID_URI,
-            RESULT_ERROR_APPLICATION
-    })
-    @Retention(RetentionPolicy.SOURCE)
-    public @interface Result {
-    }
-
-    /**
-     * Opcode write was successful.
-     *
-     * @hide
-     */
-    public static final int RESULT_SUCCESS = 0;
-
-    /**
-     * Unknown call Id has been used in the operation.
-     *
-     * @hide
-     */
-    public static final int RESULT_ERROR_UNKNOWN_CALL_ID = 1;
-
-    /**
-     * The URI provided in {@link Callback#onPlaceCallRequest} is invalid.
-     *
-     * @hide
-     */
-    public static final int RESULT_ERROR_INVALID_URI = 2;
-
-    /**
-     * Application internal error.
-     *
-     * @hide
-     */
-    public static final int RESULT_ERROR_APPLICATION = 3;
-
-    /** @hide */
-    @IntDef(prefix = "TERMINATION_REASON_", value = {
-            TERMINATION_REASON_INVALID_URI,
-            TERMINATION_REASON_FAIL,
-            TERMINATION_REASON_REMOTE_HANGUP,
-            TERMINATION_REASON_SERVER_HANGUP,
-            TERMINATION_REASON_LINE_BUSY,
-            TERMINATION_REASON_NETWORK_CONGESTION,
-            TERMINATION_REASON_CLIENT_HANGUP,
-            TERMINATION_REASON_NO_SERVICE,
-            TERMINATION_REASON_NO_ANSWER
-    })
-    @Retention(RetentionPolicy.SOURCE)
-    public @interface TerminationReason {
-    }
-
-    /**
-     * Remote Caller ID value used to place a call was formed improperly.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_INVALID_URI = 0x00;
-
-    /**
-     * Call fail.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_FAIL = 0x01;
-
-    /**
-     * Remote party ended call.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_REMOTE_HANGUP = 0x02;
-
-    /**
-     * Call ended from the server.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_SERVER_HANGUP = 0x03;
-
-    /**
-     * Line busy.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_LINE_BUSY = 0x04;
-
-    /**
-     * Network congestion.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_NETWORK_CONGESTION = 0x05;
-
-    /**
-     * Client terminated.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_CLIENT_HANGUP = 0x06;
-
-    /**
-     * No service.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_NO_SERVICE = 0x07;
-
-    /**
-     * No answer.
-     *
-     * @hide
-     */
-    public static final int TERMINATION_REASON_NO_ANSWER = 0x08;
-
-    /*
-     * Flag indicating support for hold/unhold call feature.
-     *
-     * @hide
-     */
-    public static final int CAPABILITY_HOLD_CALL = 0x00000001;
-
-    /**
-     * Flag indicating support for joining calls feature.
-     *
-     * @hide
-     */
-    public static final int CAPABILITY_JOIN_CALLS = 0x00000002;
-
-    private static final int MESSAGE_TBS_SERVICE_CONNECTED = 102;
-    private static final int MESSAGE_TBS_SERVICE_DISCONNECTED = 103;
-
-    private static final int REG_TIMEOUT = 10000;
-
-    /**
-     * The template class is used to call callback functions on events from the TBS
-     * server. Callback functions are wrapped in this class and registered to the
-     * Android system during app registration.
-     *
-     * @hide
-     */
-    public abstract static class Callback {
-
-        private static final String TAG = "BluetoothLeCallControl.Callback";
-
-        /**
-         * Called when a remote client requested to accept the call.
-         *
-         * <p>
-         * An application must call {@link BluetoothLeCallControl#requestResult} to complete the
-         * request.
-         *
-         * @param requestId The Id of the request
-         * @param callId    The call Id requested to be accepted
-         * @hide
-         */
-        public abstract void onAcceptCall(int requestId, @NonNull UUID callId);
-
-        /**
-         * A remote client has requested to terminate the call.
-         *
-         * <p>
-         * An application must call {@link BluetoothLeCallControl#requestResult} to complete the
-         * request.
-         *
-         * @param requestId The Id of the request
-         * @param callId    The call Id requested to terminate
-         * @hide
-         */
-        public abstract void onTerminateCall(int requestId, @NonNull UUID callId);
-
-        /**
-         * A remote client has requested to hold the call.
-         *
-         * <p>
-         * An application must call {@link BluetoothLeCallControl#requestResult} to complete the
-         * request.
-         *
-         * @param requestId The Id of the request
-         * @param callId    The call Id requested to be put on hold
-         * @hide
-         */
-        public void onHoldCall(int requestId, @NonNull UUID callId) {
-            Log.e(TAG, "onHoldCall: unimplemented, however CAPABILITY_HOLD_CALL is set!");
-        }
-
-        /**
-         * A remote client has requested to unhold the call.
-         *
-         * <p>
-         * An application must call {@link BluetoothLeCallControl#requestResult} to complete the
-         * request.
-         *
-         * @param requestId The Id of the request
-         * @param callId    The call Id requested to unhold
-         * @hide
-         */
-        public void onUnholdCall(int requestId, @NonNull UUID callId) {
-            Log.e(TAG, "onUnholdCall: unimplemented, however CAPABILITY_HOLD_CALL is set!");
-        }
-
-        /**
-         * A remote client has requested to place a call.
-         *
-         * <p>
-         * An application must call {@link BluetoothLeCallControl#requestResult} to complete the
-         * request.
-         *
-         * @param requestId The Id of the request
-         * @param callId    The Id to be assigned for the new call
-         * @param uri       The caller URI requested
-         * @hide
-         */
-        public abstract void onPlaceCall(int requestId, @NonNull UUID callId, @NonNull String uri);
-
-        /**
-         * A remote client has requested to join the calls.
-         *
-         * <p>
-         * An application must call {@link BluetoothLeCallControl#requestResult} to complete the
-         * request.
-         *
-         * @param requestId The Id of the request
-         * @param callIds   The call Id list requested to join
-         * @hide
-         */
-        public void onJoinCalls(int requestId, @NonNull List<UUID> callIds) {
-            Log.e(TAG, "onJoinCalls: unimplemented, however CAPABILITY_JOIN_CALLS is set!");
-        }
-    }
-
-    private class CallbackWrapper extends IBluetoothLeCallControlCallback.Stub {
-
-        private final Executor mExecutor;
-        private final Callback mCallback;
-
-        CallbackWrapper(Executor executor, Callback callback) {
-            mExecutor = executor;
-            mCallback = callback;
-        }
-
-        @Override
-        public void onBearerRegistered(int ccid) {
-            synchronized (mServerIfLock) {
-                if (mCallback != null) {
-                    mCcid = ccid;
-                    mServerIfLock.notifyAll();
-                } else {
-                    // registration timeout
-                    Log.e(TAG, "onBearerRegistered: mCallback is null");
-                }
-            }
-        }
-
-        @Override
-        public void onAcceptCall(int requestId, ParcelUuid uuid) {
-            final long identityToken = Binder.clearCallingIdentity();
-            try {
-                mExecutor.execute(() -> mCallback.onAcceptCall(requestId, uuid.getUuid()));
-            } finally {
-                Binder.restoreCallingIdentity(identityToken);
-            }
-        }
-
-        @Override
-        public void onTerminateCall(int requestId, ParcelUuid uuid) {
-            final long identityToken = Binder.clearCallingIdentity();
-            try {
-                mExecutor.execute(() -> mCallback.onTerminateCall(requestId, uuid.getUuid()));
-            } finally {
-                Binder.restoreCallingIdentity(identityToken);
-            }
-        }
-
-        @Override
-        public void onHoldCall(int requestId, ParcelUuid uuid) {
-            final long identityToken = Binder.clearCallingIdentity();
-            try {
-                mExecutor.execute(() -> mCallback.onHoldCall(requestId, uuid.getUuid()));
-            } finally {
-                Binder.restoreCallingIdentity(identityToken);
-            }
-        }
-
-        @Override
-        public void onUnholdCall(int requestId, ParcelUuid uuid) {
-            final long identityToken = Binder.clearCallingIdentity();
-            try {
-                mExecutor.execute(() -> mCallback.onUnholdCall(requestId, uuid.getUuid()));
-            } finally {
-                Binder.restoreCallingIdentity(identityToken);
-            }
-        }
-
-        @Override
-        public void onPlaceCall(int requestId, ParcelUuid uuid, String uri) {
-            final long identityToken = Binder.clearCallingIdentity();
-            try {
-                mExecutor.execute(() -> mCallback.onPlaceCall(requestId, uuid.getUuid(), uri));
-            } finally {
-                Binder.restoreCallingIdentity(identityToken);
-            }
-        }
-
-        @Override
-        public void onJoinCalls(int requestId, List<ParcelUuid> parcelUuids) {
-            List<UUID> uuids = new ArrayList<>();
-            for (ParcelUuid parcelUuid : parcelUuids) {
-                uuids.add(parcelUuid.getUuid());
-            }
-
-            final long identityToken = Binder.clearCallingIdentity();
-            try {
-                mExecutor.execute(() -> mCallback.onJoinCalls(requestId, uuids));
-            } finally {
-                Binder.restoreCallingIdentity(identityToken);
-            }
-        }
-    };
-
-    private Context mContext;
-    private ServiceListener mServiceListener;
-    private volatile IBluetoothLeCallControl mService;
-    private BluetoothAdapter mAdapter;
-    private int mCcid = 0;
-    private String mToken;
-    private Callback mCallback = null;
-    private Object mServerIfLock = new Object();
-
-    private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback =
-        new IBluetoothStateChangeCallback.Stub() {
-        public void onBluetoothStateChange(boolean up) {
-            if (DBG)
-                Log.d(TAG, "onBluetoothStateChange: up=" + up);
-            if (!up) {
-                doUnbind();
-            } else {
-                doBind();
-            }
-        }
-    };
-
-    /**
-     * Create a BluetoothLeCallControl proxy object for interacting with the local Bluetooth
-     * telephone bearer service.
-     */
-    /* package */ BluetoothLeCallControl(Context context, ServiceListener listener) {
-        mContext = context;
-        mAdapter = BluetoothAdapter.getDefaultAdapter();
-        mServiceListener = listener;
-
-        IBluetoothManager mgr = mAdapter.getBluetoothManager();
-        if (mgr != null) {
-            try {
-                mgr.registerStateChangeCallback(mBluetoothStateChangeCallback);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-
-        doBind();
-    }
-
-    private boolean doBind() {
-        synchronized (mConnection) {
-            if (mService == null) {
-                if (VDBG)
-                    Log.d(TAG, "Binding service...");
-                try {
-                    return mAdapter.getBluetoothManager().
-                            bindBluetoothProfileService(BluetoothProfile.LE_CALL_CONTROL,
-                            mConnection);
-                } catch (RemoteException e) {
-                    Log.e(TAG, "Unable to bind TelephoneBearerService", e);
-                }
-            }
-        }
-        return false;
-    }
-
-    private void doUnbind() {
-        synchronized (mConnection) {
-            if (mService != null) {
-                if (VDBG)
-                    Log.d(TAG, "Unbinding service...");
-                try {
-                    mAdapter.getBluetoothManager().
-                        unbindBluetoothProfileService(BluetoothProfile.LE_CALL_CONTROL,
-                        mConnection);
-                } catch (RemoteException e) {
-                    Log.e(TAG, "Unable to unbind TelephoneBearerService", e);
-                } finally {
-                    mService = null;
-                }
-            }
-        }
-    }
-
-    /* package */ void close() {
-        if (VDBG)
-            log("close()");
-        unregisterBearer();
-
-        IBluetoothManager mgr = mAdapter.getBluetoothManager();
-        if (mgr != null) {
-            try {
-                mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback);
-            } catch (RemoteException re) {
-                Log.e(TAG, "", re);
-            }
-        }
-        mServiceListener = null;
-        doUnbind();
-    }
-
-    private IBluetoothLeCallControl getService() {
-        return mService;
-    }
-
-    /**
-     * Not supported
-     *
-     * @throws UnsupportedOperationException
-     */
-    @Override
-    public int getConnectionState(@Nullable BluetoothDevice device) {
-        throw new UnsupportedOperationException("not supported");
-    }
-
-    /**
-     * Not supported
-     *
-     * @throws UnsupportedOperationException
-     */
-    @Override
-    public @NonNull List<BluetoothDevice> getConnectedDevices() {
-        throw new UnsupportedOperationException("not supported");
-    }
-
-    /**
-     * Not supported
-     *
-     * @throws UnsupportedOperationException
-     */
-    @Override
-    public @NonNull List<BluetoothDevice> getDevicesMatchingConnectionStates(
-        @NonNull int[] states) {
-        throw new UnsupportedOperationException("not supported");
-    }
-
-    /**
-     * Register Telephone Bearer exposing the interface that allows remote devices
-     * to track and control the call states.
-     *
-     * <p>
-     * This is an asynchronous call. The callback is used to notify success or
-     * failure if the function returns true.
-     *
-     * <p>
-     * Requires {@link android.Manifest.permission#BLUETOOTH} permission.
-     *
-     * <!-- The UCI is a String identifier of the telephone bearer as defined at
-     * https://www.bluetooth.com/specifications/assigned-numbers/uniform-caller-identifiers
-     * (login required). -->
-     *
-     * <!-- The examples of common URI schemes can be found in
-     * https://iana.org/assignments/uri-schemes/uri-schemes.xhtml -->
-     *
-     * <!-- The Technology is an integer value. The possible values are defined at
-     * https://www.bluetooth.com/specifications/assigned-numbers (login required).
-     * -->
-     *
-     * @param uci          Bearer Unique Client Identifier
-     * @param uriSchemes   URI Schemes supported list
-     * @param capabilities bearer capabilities
-     * @param provider     Network provider name
-     * @param technology   Network technology
-     * @param executor     {@link Executor} object on which callback will be
-     *                     executed. The Executor object is required.
-     * @param callback     {@link Callback} object to which callback messages will
-     *                     be sent. The Callback object is required.
-     * @return true on success, false otherwise
-     * @hide
-     */
-    @SuppressLint("ExecutorRegistration")
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public boolean registerBearer(@Nullable String uci,
-                    @NonNull List<String> uriSchemes, int capabilities,
-                    @NonNull String provider, int technology,
-                    @NonNull Executor executor, @NonNull Callback callback) {
-        if (DBG) {
-            Log.d(TAG, "registerBearer");
-        }
-        if (callback == null) {
-            throw new IllegalArgumentException("null parameter: " + callback);
-        }
-        if (mCcid != 0) {
-            return false;
-        }
-
-        mToken = uci;
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            synchronized (mServerIfLock) {
-                if (mCallback != null) {
-                    Log.e(TAG, "Bearer can be opened only once");
-                    return false;
-                }
-
-                mCallback = callback;
-                try {
-                    CallbackWrapper callbackWrapper = new CallbackWrapper(executor, callback);
-                    service.registerBearer(mToken, callbackWrapper, uci, uriSchemes, capabilities,
-                                            provider, technology);
-                } catch (RemoteException e) {
-                    Log.e(TAG, "", e);
-                    mCallback = null;
-                    return false;
-                }
-
-                try {
-                    mServerIfLock.wait(REG_TIMEOUT);
-                } catch (InterruptedException e) {
-                    Log.e(TAG, "" + e);
-                    mCallback = null;
-                }
-
-                if (mCcid == 0) {
-                    mCallback = null;
-                    return false;
-                }
-
-                return true;
-            }
-        }
-        if (service == null) {
-            Log.w(TAG, "Proxy not attached to service");
-        }
-
-        return false;
-    }
-
-    /**
-     * Unregister Telephone Bearer Service and destroy all the associated data.
-     *
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public void unregisterBearer() {
-        if (DBG) {
-            Log.d(TAG, "unregisterBearer");
-        }
-        if (mCcid == 0) {
-            return;
-        }
-
-        int ccid = mCcid;
-        mCcid = 0;
-        mCallback = null;
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.unregisterBearer(mToken);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-        if (service == null) {
-            Log.w(TAG, "Proxy not attached to service");
-        }
-    }
-
-    /**
-     * Get the Content Control ID (CCID) value.
-     *
-     * @return ccid Content Control ID value
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public int getContentControlId() {
-        return mCcid;
-    }
-
-    /**
-     * Notify about the newly added call.
-     *
-     * <p>
-     * This shall be called as early as possible after the call has been added.
-     *
-     * <p>
-     * Requires {@link android.Manifest.permission#BLUETOOTH} permission.
-     *
-     * @param call Newly added call
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public void onCallAdded(@NonNull BluetoothLeCall call) {
-        if (DBG) {
-            Log.d(TAG, "onCallAdded: call=" + call);
-        }
-        if (mCcid == 0) {
-            return;
-        }
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.callAdded(mCcid, call);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-        if (service == null) {
-            Log.w(TAG, "Proxy not attached to service");
-        }
-    }
-
-    /**
-     * Notify about the removed call.
-     *
-     * <p>
-     * This shall be called as early as possible after the call has been removed.
-     *
-     * <p>
-     * Requires {@link android.Manifest.permission#BLUETOOTH} permission.
-     *
-     * @param callId The Id of a call that has been removed
-     * @param reason Call termination reason
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public void onCallRemoved(@NonNull UUID callId, @TerminationReason int reason) {
-        if (DBG) {
-            Log.d(TAG, "callRemoved: callId=" + callId);
-        }
-        if (mCcid == 0) {
-            return;
-        }
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.callRemoved(mCcid, new ParcelUuid(callId), reason);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-        if (service == null) {
-            Log.w(TAG, "Proxy not attached to service");
-        }
-    }
-
-    /**
-     * Notify the call state change
-     *
-     * <p>
-     * This shall be called as early as possible after the state of the call has
-     * changed.
-     *
-     * <p>
-     * Requires {@link android.Manifest.permission#BLUETOOTH} permission.
-     *
-     * @param callId The call Id that state has been changed
-     * @param state  Call state
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public void onCallStateChanged(@NonNull UUID callId, @BluetoothLeCall.State int state) {
-        if (DBG) {
-            Log.d(TAG, "callStateChanged: callId=" + callId + " state=" + state);
-        }
-        if (mCcid == 0) {
-            return;
-        }
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.callStateChanged(mCcid, new ParcelUuid(callId), state);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-        if (service == null) {
-            Log.w(TAG, "Proxy not attached to service");
-        }
-    }
-
-    /**
-     * Provide the current calls list
-     *
-     * <p>
-     * This function must be invoked after registration if application has any
-     * calls.
-     *
-     * @param calls current calls list
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-     public void currentCallsList(@NonNull List<BluetoothLeCall> calls) {
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.currentCallsList(mCcid, calls);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-    }
-
-    /**
-     * Provide the network current status
-     *
-     * <p>
-     * This function must be invoked on change of network state.
-     *
-     * <p>
-     * Requires {@link android.Manifest.permission#BLUETOOTH} permission.
-     *
-     * <!-- The Technology is an integer value. The possible values are defined at
-     * https://www.bluetooth.com/specifications/assigned-numbers (login required).
-     * -->
-     *
-     * @param provider   Network provider name
-     * @param technology Network technology
-     * @hide
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public void networkStateChanged(@NonNull String provider, int technology) {
-        if (DBG) {
-            Log.d(TAG, "networkStateChanged: provider=" + provider + ", technology=" + technology);
-        }
-        if (mCcid == 0) {
-            return;
-        }
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.networkStateChanged(mCcid, provider, technology);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-        if (service == null) {
-            Log.w(TAG, "Proxy not attached to service");
-        }
-    }
-
-    /**
-     * Send a response to a call control request to a remote device.
-     *
-     * <p>
-     * This function must be invoked in when a request is received by one of these
-     * callback methods:
-     *
-     * <ul>
-     * <li>{@link Callback#onAcceptCall}
-     * <li>{@link Callback#onTerminateCall}
-     * <li>{@link Callback#onHoldCall}
-     * <li>{@link Callback#onUnholdCall}
-     * <li>{@link Callback#onPlaceCall}
-     * <li>{@link Callback#onJoinCalls}
-     * </ul>
-     *
-     * @param requestId The ID of the request that was received with the callback
-     * @param result    The result of the request to be sent to the remote devices
-     */
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    public void requestResult(int requestId, @Result int result) {
-        if (DBG) {
-            Log.d(TAG, "requestResult: requestId=" + requestId + " result=" + result);
-        }
-        if (mCcid == 0) {
-            return;
-        }
-
-        final IBluetoothLeCallControl service = getService();
-        if (service != null) {
-            try {
-                service.requestResult(mCcid, requestId, result);
-            } catch (RemoteException e) {
-                Log.e(TAG, "", e);
-            }
-        }
-    }
-
-    @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
-    private static boolean isValidDevice(@Nullable BluetoothDevice device) {
-        return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
-    }
-
-    private static void log(String msg) {
-        Log.d(TAG, msg);
-    }
-
-    private final IBluetoothProfileServiceConnection mConnection =
-                                    new IBluetoothProfileServiceConnection.Stub() {
-        @Override
-        public void onServiceConnected(ComponentName className, IBinder service) {
-            if (DBG) {
-                Log.d(TAG, "Proxy object connected");
-            }
-            mService = IBluetoothLeCallControl.Stub.asInterface(Binder.allowBlocking(service));
-            mHandler.sendMessage(mHandler.obtainMessage(MESSAGE_TBS_SERVICE_CONNECTED));
-        }
-
-        @Override
-        public void onServiceDisconnected(ComponentName className) {
-            if (DBG) {
-                Log.d(TAG, "Proxy object disconnected");
-            }
-            doUnbind();
-            mHandler.sendMessage(mHandler.obtainMessage(MESSAGE_TBS_SERVICE_DISCONNECTED));
-        }
-    };
-
-    private final Handler mHandler = new Handler(Looper.getMainLooper()) {
-        @Override
-        public void handleMessage(Message msg) {
-            switch (msg.what) {
-            case MESSAGE_TBS_SERVICE_CONNECTED: {
-                if (mServiceListener != null) {
-                    mServiceListener.onServiceConnected(BluetoothProfile.LE_CALL_CONTROL,
-                        BluetoothLeCallControl.this);
-                }
-                break;
-            }
-            case MESSAGE_TBS_SERVICE_DISCONNECTED: {
-                if (mServiceListener != null) {
-                    mServiceListener.onServiceDisconnected(BluetoothProfile.LE_CALL_CONTROL);
-                }
-                break;
-            }
-            }
-        }
-    };
-}