/*
 * Copyright 2020 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 static android.Manifest.permission.BLUETOOTH_CONNECT;
import static android.Manifest.permission.BLUETOOTH_PRIVILEGED;
import static android.bluetooth.BluetoothProfile.CONNECTION_POLICY_ALLOWED;
import static android.bluetooth.BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
import static android.bluetooth.BluetoothProfile.STATE_DISCONNECTED;

import static java.util.Objects.requireNonNull;

import android.annotation.CallbackExecutor;
import android.annotation.FlaggedApi;
import android.annotation.IntDef;
import android.annotation.IntRange;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresNoPermission;
import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SuppressLint;
import android.annotation.SystemApi;
import android.app.compat.CompatChanges;
import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
import android.compat.annotation.ChangeId;
import android.compat.annotation.EnabledSince;
import android.content.AttributionSource;
import android.content.Context;
import android.os.IBinder;
import android.os.Process;
import android.os.RemoteException;
import android.util.CloseGuard;
import android.util.Log;

import com.android.bluetooth.flags.Flags;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.function.Consumer;

/**
 * This class provides the public APIs to control the LeAudio profile.
 *
 * <p>BluetoothLeAudio is a proxy object for controlling the Bluetooth LE Audio Service via IPC. Use
 * {@link BluetoothAdapter#getProfileProxy} to get the BluetoothLeAudio proxy object.
 *
 * <p>Android only supports one set of connected Bluetooth LeAudio device at a time. Each method is
 * protected with its appropriate permission.
 */
public final class BluetoothLeAudio implements BluetoothProfile, AutoCloseable {
    private static final String TAG = BluetoothLeAudio.class.getSimpleName();

    private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
    private static final boolean VDBG = false;

    private final CloseGuard mCloseGuard;

    /**
     * This class provides a callback that is invoked when audio codec config changes on the remote
     * device.
     *
     * @hide
     */
    @SystemApi
    public interface Callback {
        /** @hide */
        @Retention(RetentionPolicy.SOURCE)
        @IntDef(
                value = {
                    GROUP_STATUS_ACTIVE,
                    GROUP_STATUS_INACTIVE,
                })
        @interface GroupStatus {}

        /** @hide */
        @Retention(RetentionPolicy.SOURCE)
        @IntDef(
                value = {
                    GROUP_STREAM_STATUS_IDLE,
                    GROUP_STREAM_STATUS_STREAMING,
                })
        @interface GroupStreamStatus {}

        /**
         * Callback invoked when callback is registered and when codec config changes on the remote
         * device.
         *
         * @param groupId the group id
         * @param status latest codec status for this group
         * @hide
         */
        @SystemApi
        void onCodecConfigChanged(int groupId, @NonNull BluetoothLeAudioCodecStatus status);

        /**
         * Callback invoked when a device has been added to the group. It usually happens after
         * connection or on bluetooth startup if the device is bonded.
         *
         * @param device the device which is added to the group
         * @param groupId the group id
         * @hide
         */
        @SystemApi
        void onGroupNodeAdded(@NonNull BluetoothDevice device, int groupId);

        /**
         * Callback invoked when a device has been removed from the group. It usually happens when
         * device gets unbonded.
         *
         * @param device the device which is removed from the group
         * @param groupId the group id
         * @hide
         */
        @SystemApi
        void onGroupNodeRemoved(@NonNull BluetoothDevice device, int groupId);

        /**
         * Callback invoked the group's active state changes.
         *
         * @param groupId the group id
         * @param groupStatus active or inactive state.
         * @hide
         */
        @SystemApi
        void onGroupStatusChanged(int groupId, @GroupStatus int groupStatus);

        /**
         * Callback invoked when the group's stream status changes.
         *
         * @param groupId the group id
         * @param groupStreamStatus streaming or idle state.
         * @hide
         */
        @SystemApi
        default void onGroupStreamStatusChanged(
                int groupId, @GroupStreamStatus int groupStreamStatus) {
            if (DBG) {
                Log.d(TAG, " onGroupStreamStatusChanged is not implemented.");
            }
        }

        /**
         * Callback invoked when the broadcast to unicast fallback group changes.
         *
         * <p>This callback provides the new broadcast to unicast fallback group ID. It is invoked
         * when the broadcast to unicast fallback group is initially set, or when it subsequently
         * changes.
         *
         * @param groupId The ID of the new broadcast to unicast fallback group.
         * @hide
         */
        @FlaggedApi(Flags.FLAG_LEAUDIO_BROADCAST_API_MANAGE_PRIMARY_GROUP)
        @SystemApi
        default void onBroadcastToUnicastFallbackGroupChanged(int groupId) {
            if (DBG) {
                Log.d(TAG, "onBroadcastToUnicastFallbackGroupChanged is not implemented.");
            }
        }
    }

    private final CallbackWrapper<Callback, IBluetoothLeAudio> mCallbackWrapper;

    private final IBluetoothLeAudioCallback mCallback = new LeAudioNotifyCallback();

    private class LeAudioNotifyCallback extends IBluetoothLeAudioCallback.Stub {
        @Override
        public void onCodecConfigChanged(int groupId, BluetoothLeAudioCodecStatus status) {
            mCallbackWrapper.forEach((cb) -> cb.onCodecConfigChanged(groupId, status));
        }

        @Override
        public void onGroupNodeAdded(@NonNull BluetoothDevice device, int groupId) {
            Attributable.setAttributionSource(device, mAttributionSource);
            mCallbackWrapper.forEach((cb) -> cb.onGroupNodeAdded(device, groupId));
        }

        @Override
        public void onGroupNodeRemoved(@NonNull BluetoothDevice device, int groupId) {
            Attributable.setAttributionSource(device, mAttributionSource);
            mCallbackWrapper.forEach((cb) -> cb.onGroupNodeRemoved(device, groupId));
        }

        @Override
        public void onGroupStatusChanged(int groupId, int groupStatus) {
            mCallbackWrapper.forEach((cb) -> cb.onGroupStatusChanged(groupId, groupStatus));
        }

        @Override
        public void onGroupStreamStatusChanged(int groupId, int groupStreamStatus) {
            mCallbackWrapper.forEach(
                    (cb) -> cb.onGroupStreamStatusChanged(groupId, groupStreamStatus));
        }

        @Override
        public void onBroadcastToUnicastFallbackGroupChanged(int groupId) {
            if (Flags.leaudioBroadcastApiManagePrimaryGroup()) {
                mCallbackWrapper.forEach(
                        (cb) -> cb.onBroadcastToUnicastFallbackGroupChanged(groupId));
            }
        }
    }

    /**
     * Intent used to broadcast the change in connection state of the LeAudio profile. Please note
     * that in the binaural case, there will be two different LE devices for the left and right side
     * and each device will have their own connection state changes.
     *
     * <p>This intent will have 3 extras:
     *
     * <ul>
     *   <li>{@link #EXTRA_STATE} - The current state of the profile.
     *   <li>{@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
     *   <li>{@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
     * </ul>
     *
     * <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of {@link
     * #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, {@link #STATE_CONNECTED}, {@link
     * #STATE_DISCONNECTING}.
     */
    @RequiresLegacyBluetoothPermission
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
    public static final String ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED =
            "android.bluetooth.action.LE_AUDIO_CONNECTION_STATE_CHANGED";

    /**
     * Intent used to broadcast the selection of a connected device as active.
     *
     * <p>This intent will have one extra:
     *
     * <ul>
     *   <li>{@link BluetoothDevice#EXTRA_DEVICE} - The remote device. It can be null if no device
     *       is active.
     * </ul>
     *
     * @hide
     */
    @SystemApi
    @RequiresLegacyBluetoothPermission
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
    public static final String ACTION_LE_AUDIO_ACTIVE_DEVICE_CHANGED =
            "android.bluetooth.action.LE_AUDIO_ACTIVE_DEVICE_CHANGED";

    /**
     * Indicates invalid/unset audio context.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_INVALID = 0x0000;

    /**
     * Indicates unspecified audio content.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_UNSPECIFIED = 0x0001;

    /**
     * Indicates conversation between humans as, for example, in telephony or video calls.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_CONVERSATIONAL = 0x0002;

    /**
     * Indicates media as, for example, in music, public radio, podcast or video soundtrack.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_MEDIA = 0x0004;

    /**
     * Indicates audio associated with a video gaming.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_GAME = 0x0008;

    /**
     * Indicates instructional audio as, for example, in navigation, announcements or user guidance.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_INSTRUCTIONAL = 0x0010;

    /**
     * Indicates man machine communication as, for example, with voice recognition or virtual
     * assistant.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_VOICE_ASSISTANTS = 0x0020;

    /**
     * Indicates audio associated with a live audio stream.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_LIVE = 0x0040;

    /**
     * Indicates sound effects as, for example, in keyboard, touch feedback; menu and user interface
     * sounds, and other system sounds.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_SOUND_EFFECTS = 0x0080;

    /**
     * Indicates notification and reminder sounds, attention-seeking audio, for example, in beeps
     * signaling the arrival of a message.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_NOTIFICATIONS = 0x0100;

    /**
     * Indicates ringtone as in a call alert.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_RINGTONE = 0x0200;

    /**
     * Indicates alerts and timers, immediate alerts as, for example, in a low battery alarm, timer
     * expiry or alarm clock.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_ALERTS = 0x0400;

    /**
     * Indicates emergency alarm as, for example, with fire alarms or other urgent alerts.
     *
     * @hide
     */
    public static final int CONTEXT_TYPE_EMERGENCY_ALARM = 0x0800;

    /**
     * Indicates all contexts.
     *
     * @hide
     */
    public static final int CONTEXTS_ALL =
            CONTEXT_TYPE_UNSPECIFIED
                    | CONTEXT_TYPE_CONVERSATIONAL
                    | CONTEXT_TYPE_MEDIA
                    | CONTEXT_TYPE_GAME
                    | CONTEXT_TYPE_INSTRUCTIONAL
                    | CONTEXT_TYPE_VOICE_ASSISTANTS
                    | CONTEXT_TYPE_LIVE
                    | CONTEXT_TYPE_SOUND_EFFECTS
                    | CONTEXT_TYPE_NOTIFICATIONS
                    | CONTEXT_TYPE_RINGTONE
                    | CONTEXT_TYPE_ALERTS
                    | CONTEXT_TYPE_EMERGENCY_ALARM;

    /** This represents an invalid group ID. */
    public static final int GROUP_ID_INVALID = IBluetoothLeAudio.LE_AUDIO_GROUP_ID_INVALID;

    /**
     * This ChangeId allows to use new Mono audio location as per
     * https://www.bluetooth.com/specifications/assigned-numbers/ 6.12.1 Audio Location Definitions
     */
    @ChangeId
    @EnabledSince(targetSdkVersion = android.os.Build.VERSION_CODES.VANILLA_ICE_CREAM)
    static final long LEAUDIO_MONO_LOCATION_ERRATA = 330847930L;

    /**
     * This represents an invalid audio location.
     *
     * @deprecated As per Bluetooth Assigned Numbers, previously location invalid is now replaced
     *     with a meaning MONO.
     * @hide
     */
    @FlaggedApi(Flags.FLAG_LEAUDIO_MONO_LOCATION_ERRATA_API)
    @Deprecated
    @SystemApi
    public static final int AUDIO_LOCATION_INVALID = 0;

    /**
     * This represents an Mono audio location.
     *
     * @hide
     */
    @FlaggedApi(Flags.FLAG_LEAUDIO_MONO_LOCATION_ERRATA_API)
    @SystemApi
    public static final int AUDIO_LOCATION_MONO = 0;

    /**
     * This represents an Unknown audio location which will be returned only when Bluetooth is OFF.
     *
     * @hide
     */
    @FlaggedApi(Flags.FLAG_LEAUDIO_MONO_LOCATION_ERRATA_API)
    @SystemApi
    public static final int AUDIO_LOCATION_UNKNOWN = 0x01 << 31;

    /**
     * This represents an audio location front left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_LEFT = 0x01 << 0;

    /**
     * This represents an audio location front right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_RIGHT = 0x01 << 1;

    /**
     * This represents an audio location front center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_CENTER = 0x01 << 2;

    /**
     * This represents an audio location low frequency effects 1.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_LOW_FREQ_EFFECTS_ONE = 0x01 << 3;

    /**
     * This represents an audio location back left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_BACK_LEFT = 0x01 << 4;

    /**
     * This represents an audio location back right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_BACK_RIGHT = 0x01 << 5;

    /**
     * This represents an audio location front left of center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_LEFT_OF_CENTER = 0x01 << 6;

    /**
     * This represents an audio location front right of center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_RIGHT_OF_CENTER = 0x01 << 7;

    /**
     * This represents an audio location back center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_BACK_CENTER = 0x01 << 8;

    /**
     * This represents an audio location low frequency effects 2.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_LOW_FREQ_EFFECTS_TWO = 0x01 << 9;

    /**
     * This represents an audio location side left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_SIDE_LEFT = 0x01 << 10;

    /**
     * This represents an audio location side right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_SIDE_RIGHT = 0x01 << 11;

    /**
     * This represents an audio location top front left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_FRONT_LEFT = 0x01 << 12;

    /**
     * This represents an audio location top front right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_FRONT_RIGHT = 0x01 << 13;

    /**
     * This represents an audio location top front center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_FRONT_CENTER = 0x01 << 14;

    /**
     * This represents an audio location top center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_CENTER = 0x01 << 15;

    /**
     * This represents an audio location top back left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_BACK_LEFT = 0x01 << 16;

    /**
     * This represents an audio location top back right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_BACK_RIGHT = 0x01 << 17;

    /**
     * This represents an audio location top side left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_SIDE_LEFT = 0x01 << 18;

    /**
     * This represents an audio location top side right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_SIDE_RIGHT = 0x01 << 19;

    /**
     * This represents an audio location top back center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_TOP_BACK_CENTER = 0x01 << 20;

    /**
     * This represents an audio location bottom front center.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_BOTTOM_FRONT_CENTER = 0x01 << 21;

    /**
     * This represents an audio location bottom front left.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_BOTTOM_FRONT_LEFT = 0x01 << 22;

    /**
     * This represents an audio location bottom front right.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_BOTTOM_FRONT_RIGHT = 0x01 << 23;

    /**
     * This represents an audio location front left wide.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_LEFT_WIDE = 0x01 << 24;

    /**
     * This represents an audio location front right wide.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_FRONT_RIGHT_WIDE = 0x01 << 25;

    /**
     * This represents an audio location left surround.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_LEFT_SURROUND = 0x01 << 26;

    /**
     * This represents an audio location right surround.
     *
     * @hide
     */
    @SystemApi public static final int AUDIO_LOCATION_RIGHT_SURROUND = 0x01 << 27;

    /** @hide */
    @SuppressLint("UniqueConstants")
    @IntDef(
            flag = true,
            prefix = "AUDIO_LOCATION_",
            value = {
                AUDIO_LOCATION_INVALID,
                AUDIO_LOCATION_MONO,
                AUDIO_LOCATION_FRONT_LEFT,
                AUDIO_LOCATION_FRONT_RIGHT,
                AUDIO_LOCATION_FRONT_CENTER,
                AUDIO_LOCATION_LOW_FREQ_EFFECTS_ONE,
                AUDIO_LOCATION_BACK_LEFT,
                AUDIO_LOCATION_BACK_RIGHT,
                AUDIO_LOCATION_FRONT_LEFT_OF_CENTER,
                AUDIO_LOCATION_FRONT_RIGHT_OF_CENTER,
                AUDIO_LOCATION_BACK_CENTER,
                AUDIO_LOCATION_LOW_FREQ_EFFECTS_TWO,
                AUDIO_LOCATION_SIDE_LEFT,
                AUDIO_LOCATION_SIDE_RIGHT,
                AUDIO_LOCATION_TOP_FRONT_LEFT,
                AUDIO_LOCATION_TOP_FRONT_RIGHT,
                AUDIO_LOCATION_TOP_FRONT_CENTER,
                AUDIO_LOCATION_TOP_CENTER,
                AUDIO_LOCATION_TOP_BACK_LEFT,
                AUDIO_LOCATION_TOP_BACK_RIGHT,
                AUDIO_LOCATION_TOP_SIDE_LEFT,
                AUDIO_LOCATION_TOP_SIDE_RIGHT,
                AUDIO_LOCATION_TOP_BACK_CENTER,
                AUDIO_LOCATION_BOTTOM_FRONT_CENTER,
                AUDIO_LOCATION_BOTTOM_FRONT_LEFT,
                AUDIO_LOCATION_BOTTOM_FRONT_RIGHT,
                AUDIO_LOCATION_FRONT_LEFT_WIDE,
                AUDIO_LOCATION_FRONT_RIGHT_WIDE,
                AUDIO_LOCATION_LEFT_SURROUND,
                AUDIO_LOCATION_RIGHT_SURROUND,
                AUDIO_LOCATION_UNKNOWN,
            })
    @Retention(RetentionPolicy.SOURCE)
    public @interface AudioLocation {}

    /**
     * Contains group id.
     *
     * @hide
     */
    @SystemApi
    public static final String EXTRA_LE_AUDIO_GROUP_ID =
            "android.bluetooth.extra.LE_AUDIO_GROUP_ID";

    /**
     * Contains bit mask for direction, bit 0 set when Sink, bit 1 set when Source.
     *
     * @hide
     */
    public static final String EXTRA_LE_AUDIO_DIRECTION =
            "android.bluetooth.extra.LE_AUDIO_DIRECTION";

    /**
     * Contains source location as per Bluetooth Assigned Numbers
     *
     * @hide
     */
    public static final String EXTRA_LE_AUDIO_SOURCE_LOCATION =
            "android.bluetooth.extra.LE_AUDIO_SOURCE_LOCATION";

    /**
     * Contains sink location as per Bluetooth Assigned Numbers
     *
     * @hide
     */
    public static final String EXTRA_LE_AUDIO_SINK_LOCATION =
            "android.bluetooth.extra.LE_AUDIO_SINK_LOCATION";

    /**
     * Contains available context types for group as per Bluetooth Assigned Numbers
     *
     * @hide
     */
    public static final String EXTRA_LE_AUDIO_AVAILABLE_CONTEXTS =
            "android.bluetooth.extra.LE_AUDIO_AVAILABLE_CONTEXTS";

    private final Context mContext;
    private final BluetoothAdapter mAdapter;
    private final AttributionSource mAttributionSource;

    /**
     * Indicating that group is Active ( Audio device is available )
     *
     * @hide
     */
    public static final int GROUP_STATUS_ACTIVE = IBluetoothLeAudio.GROUP_STATUS_ACTIVE;

    /**
     * Indicating that group is Inactive ( Audio device is not available )
     *
     * @hide
     */
    public static final int GROUP_STATUS_INACTIVE = IBluetoothLeAudio.GROUP_STATUS_INACTIVE;

    /**
     * Indicating that group stream is in IDLE (not streaming)
     *
     * @hide
     */
    @SystemApi
    public static final int GROUP_STREAM_STATUS_IDLE = IBluetoothLeAudio.GROUP_STREAM_STATUS_IDLE;

    /**
     * Indicating that group is STREAMING
     *
     * @hide
     */
    @SystemApi
    public static final int GROUP_STREAM_STATUS_STREAMING =
            IBluetoothLeAudio.GROUP_STREAM_STATUS_STREAMING;

    private IBluetoothLeAudio mService;

    /**
     * Create a BluetoothLeAudio proxy object for interacting with the local Bluetooth LeAudio
     * service.
     */
    @SuppressLint("AndroidFrameworkRequiresPermission") // Consumer wrongly report permission
    /* package */ BluetoothLeAudio(Context context, BluetoothAdapter adapter) {
        mContext = requireNonNull(context);
        mAdapter = adapter;
        mAttributionSource = adapter.getAttributionSource();
        mService = null;

        Consumer<IBluetoothLeAudio> registerConsumer =
                (IBluetoothLeAudio service) -> {
                    try {
                        service.registerCallback(mCallback, mAttributionSource);
                    } catch (RemoteException e) {
                        Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
                    }
                };
        Consumer<IBluetoothLeAudio> unregisterConsumer =
                (IBluetoothLeAudio service) -> {
                    try {
                        service.unregisterCallback(mCallback, mAttributionSource);
                    } catch (RemoteException e) {
                        Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
                    }
                };

        mCallbackWrapper = new CallbackWrapper(registerConsumer, unregisterConsumer);
        mCloseGuard = new CloseGuard();
        mCloseGuard.open("close");
    }

    /** @hide */
    @Override
    public void close() {
        mAdapter.closeProfileProxy(this);
    }

    /** @hide */
    @Override
    @SuppressLint("AndroidFrameworkRequiresPermission") // Unexposed re-entrant callback
    @RequiresNoPermission
    public void onServiceConnected(IBinder service) {
        mService = IBluetoothLeAudio.Stub.asInterface(service);
        mCallbackWrapper.registerToNewService(mService);
    }

    /** @hide */
    @Override
    @RequiresNoPermission
    public void onServiceDisconnected() {
        mService = null;
    }

    private IBluetoothLeAudio getService() {
        return mService;
    }

    /** @hide */
    @Override
    @RequiresNoPermission
    public BluetoothAdapter getAdapter() {
        return mAdapter;
    }

    @Override
    @SuppressWarnings("Finalize") // TODO(b/314811467)
    protected void finalize() {
        if (mCloseGuard != null) {
            mCloseGuard.warnIfOpen();
        }
        close();
    }

    /**
     * Initiate connection to a profile of the remote bluetooth device.
     *
     * <p>This API returns false in scenarios like the profile on the device is already connected or
     * Bluetooth is not turned on. When this API returns true, it is guaranteed that connection
     * state intent for the profile will be broadcasted with the state. Users can get the connection
     * state of the profile from this intent.
     *
     * @param device Remote Bluetooth Device
     * @return false on immediate error, true otherwise
     * @hide
     */
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public boolean connect(@Nullable BluetoothDevice device) {
        if (DBG) log("connect(" + device + ")");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled() && isValidDevice(device)) {
            try {
                return service.connect(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Initiate disconnection from a profile
     *
     * <p>This API will return false in scenarios like the profile on the Bluetooth device is not in
     * connected state etc. When this API returns, true, it is guaranteed that the connection state
     * change intent will be broadcasted with the state. Users can get the disconnection state of
     * the profile from this intent.
     *
     * <p>If the disconnection is initiated by a remote device, the state will transition from
     * {@link #STATE_CONNECTED} to {@link #STATE_DISCONNECTED}. If the disconnect is initiated by
     * the host (local) device the state will transition from {@link #STATE_CONNECTED} to state
     * {@link #STATE_DISCONNECTING} to state {@link #STATE_DISCONNECTED}. The transition to {@link
     * #STATE_DISCONNECTING} can be used to distinguish between the two scenarios.
     *
     * @param device Remote Bluetooth Device
     * @return false on immediate error, true otherwise
     * @hide
     */
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public boolean disconnect(@Nullable BluetoothDevice device) {
        if (DBG) log("disconnect(" + device + ")");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled() && isValidDevice(device)) {
            try {
                return service.disconnect(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Get Lead device for the group.
     *
     * <p>Lead device is the device that can be used as an active device in the system. Active
     * devices points to the Audio Device for the Le Audio group. This method returns the Lead
     * devices for the connected LE Audio group and this device should be used in the
     * setActiveDevice() method by other parts of the system, which wants to set to active a
     * particular Le Audio group.
     *
     * <p>Note: getActiveDevice() returns the Lead device for the currently active LE Audio group.
     * Note: When Lead device gets disconnected while Le Audio group is active and has more devices
     * in the group, then Lead device will not change. If Lead device gets disconnected, for the Le
     * Audio group which is not active, a new Lead device will be chosen
     *
     * @param groupId The group id.
     * @return group lead device.
     */
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public @Nullable BluetoothDevice getConnectedGroupLeadDevice(int groupId) {
        if (VDBG) log("getConnectedGroupLeadDevice()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return Attributable.setAttributionSource(
                        service.getConnectedGroupLeadDevice(groupId, mAttributionSource),
                        mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return null;
    }

    /** {@inheritDoc} */
    @Override
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public @NonNull List<BluetoothDevice> getConnectedDevices() {
        if (VDBG) log("getConnectedDevices()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return Attributable.setAttributionSource(
                        service.getConnectedDevices(mAttributionSource), mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return Collections.emptyList();
    }

    /** {@inheritDoc} */
    @Override
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    @NonNull
    public List<BluetoothDevice> getDevicesMatchingConnectionStates(@NonNull int[] states) {
        if (VDBG) log("getDevicesMatchingStates()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return Attributable.setAttributionSource(
                        service.getDevicesMatchingConnectionStates(states, mAttributionSource),
                        mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return Collections.emptyList();
    }

    /** {@inheritDoc} */
    @Override
    @RequiresLegacyBluetoothPermission
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public @BtProfileState int getConnectionState(@NonNull BluetoothDevice device) {
        if (VDBG) log("getState(" + device + ")");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled() && isValidDevice(device)) {
            try {
                return service.getConnectionState(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return STATE_DISCONNECTED;
    }

    /**
     * Register a {@link Callback} that will be invoked during the operation of this profile.
     *
     * <p>Repeated registration of the same <var>callback</var> object will have no effect after the
     * first call to this method, even when the <var>executor</var> is different. API caller must
     * call {@link #unregisterCallback(Callback)} with the same callback object before registering
     * it again.
     *
     * <p>The {@link Callback} will be invoked only if there is codec status changed for the remote
     * device or the device is connected/disconnected in a certain group or the group status is
     * changed.
     *
     * @param executor an {@link Executor} to execute given callback
     * @param callback user implementation of the {@link Callback}
     * @throws NullPointerException if a null executor or callback is given
     * @throws IllegalArgumentException the callback is already registered
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public void registerCallback(
            @NonNull @CallbackExecutor Executor executor, @NonNull Callback callback) {
        // Enforcing permission in the framework is useless from security point of view.
        // This is being done to help normal app developer to catch the missing permission, since
        // the call to the service is oneway and the SecurityException will just be logged
        final int pid = Process.myPid();
        final int uid = Process.myUid();
        mContext.enforcePermission(BLUETOOTH_CONNECT, pid, uid, null);
        mContext.enforcePermission(BLUETOOTH_PRIVILEGED, pid, uid, null);

        mCallbackWrapper.registerCallback(getService(), callback, executor);
    }

    /**
     * Unregister the specified {@link Callback}.
     *
     * <p>The same {@link Callback} object used when calling {@link #registerCallback(Executor,
     * Callback)} must be used.
     *
     * <p>Callbacks are automatically unregistered when the application process goes away
     *
     * @param callback user implementation of the {@link Callback}
     * @throws NullPointerException when callback is null
     * @throws IllegalArgumentException when no callback is registered
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public void unregisterCallback(@NonNull Callback callback) {
        // Enforcing permission in the framework is useless from security point of view.
        // This is being done to help normal app developer to catch the missing permission, since
        // the call to the service is oneway and the SecurityException will just be logged
        final int pid = Process.myPid();
        final int uid = Process.myUid();
        mContext.enforcePermission(BLUETOOTH_CONNECT, pid, uid, null);
        mContext.enforcePermission(BLUETOOTH_PRIVILEGED, pid, uid, null);

        mCallbackWrapper.unregisterCallback(getService(), callback);
    }

    /**
     * Select a connected device as active.
     *
     * <p>The active device selection is per profile. An active device's purpose is
     * profile-specific. For example, LeAudio audio streaming is to the active LeAudio device. If a
     * remote device is not connected, it cannot be selected as active.
     *
     * <p>This API returns false in scenarios like the profile on the device is not connected or
     * Bluetooth is not turned on. When this API returns true, it is guaranteed that the {@link
     * #ACTION_LE_AUDIO_ACTIVE_DEVICE_CHANGED} intent will be broadcasted with the active device.
     *
     * @param device the remote Bluetooth device. Could be null to clear the active device and stop
     *     streaming audio to a Bluetooth device.
     * @return false on immediate error, true otherwise
     * @hide
     */
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public boolean setActiveDevice(@Nullable BluetoothDevice device) {
        if (DBG) log("setActiveDevice(" + device + ")");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled() && ((device == null) || isValidDevice(device))) {
            try {
                return service.setActiveDevice(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Get the connected LeAudio devices that are active
     *
     * @return the list of active devices. Returns empty list on error.
     * @hide
     */
    @NonNull
    @RequiresLegacyBluetoothPermission
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public List<BluetoothDevice> getActiveDevices() {
        if (VDBG) log("getActiveDevice()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return Attributable.setAttributionSource(
                        service.getActiveDevices(mAttributionSource), mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return Collections.emptyList();
    }

    /**
     * Get device group id. Devices with same group id belong to same group (i.e left and right
     * earbud)
     *
     * @param device LE Audio capable device
     * @return group id that this device currently belongs to, {@link #GROUP_ID_INVALID} when this
     *     device does not belong to any group
     */
    @RequiresLegacyBluetoothPermission
    @RequiresBluetoothConnectPermission
    @RequiresPermission(BLUETOOTH_CONNECT)
    public int getGroupId(@NonNull BluetoothDevice device) {
        if (VDBG) log("getGroupId()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return service.getGroupId(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return GROUP_ID_INVALID;
    }

    /**
     * Set volume for the streaming devices
     *
     * @param volume volume to set
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public void setVolume(@IntRange(from = 0, to = 255) int volume) {
        if (VDBG) log("setVolume(vol: " + volume + " )");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                service.setVolume(volume, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
    }

    /**
     * Add device to the given group.
     *
     * @param groupId group ID the device is being added to
     * @param device the active device
     * @return true on success, otherwise false
     * @hide
     */
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public boolean groupAddNode(int groupId, @NonNull BluetoothDevice device) {
        if (VDBG) log("groupAddNode()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return service.groupAddNode(groupId, device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Remove device from a given group.
     *
     * @param groupId group ID the device is being removed from
     * @param device the active device
     * @return true on success, otherwise false
     * @hide
     */
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public boolean groupRemoveNode(int groupId, @NonNull BluetoothDevice device) {
        if (VDBG) log("groupRemoveNode()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return service.groupRemoveNode(groupId, device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Get the audio location for the device. The return value is a bit field. The bit definition is
     * included in Bluetooth SIG Assigned Numbers - Generic Audio - Audio Location Definitions. ex.
     * Front Left: 0x00000001 Front Right: 0x00000002 Front Left | Front Right: 0x00000003
     *
     * @param device the bluetooth device
     * @return The bit field of audio location for the device.
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    @SuppressWarnings("FlaggedApi") // Due to deprecated AUDIO_LOCATION_INVALID
    public @AudioLocation int getAudioLocation(@NonNull BluetoothDevice device) {
        if (VDBG) log("getAudioLocation()");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled() && isValidDevice(device)) {
            try {
                return service.getAudioLocation(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }

        if (Flags.leaudioMonoLocationErrataApi()
                && CompatChanges.isChangeEnabled(LEAUDIO_MONO_LOCATION_ERRATA)) {
            return AUDIO_LOCATION_UNKNOWN;
        }

        return AUDIO_LOCATION_INVALID;
    }

    /**
     * Check if inband ringtone is enabled by the LE Audio group. Group id for the device can be
     * found with {@link BluetoothLeAudio#getGroupId}.
     *
     * @param groupId LE Audio group id
     * @return {@code true} if inband ringtone is enabled, {@code false} otherwise
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public boolean isInbandRingtoneEnabled(int groupId) {
        if (VDBG) {
            log("isInbandRingtoneEnabled(), groupId: " + groupId);
        }
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) {
                log(Log.getStackTraceString(new Throwable()));
            }
        } else if (mAdapter.isEnabled()) {
            try {
                return service.isInbandRingtoneEnabled(mAttributionSource, groupId);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Set connection policy of the profile
     *
     * <p>The device should already be paired. Connection policy can be one of {@link
     * #CONNECTION_POLICY_ALLOWED}, {@link #CONNECTION_POLICY_FORBIDDEN}, {@link
     * #CONNECTION_POLICY_UNKNOWN}
     *
     * @param device Paired bluetooth device
     * @param connectionPolicy is the connection policy to set to for this profile
     * @return true if connectionPolicy is set, false on error
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public boolean setConnectionPolicy(
            @NonNull BluetoothDevice device, @ConnectionPolicy int connectionPolicy) {
        if (DBG) log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()
                && isValidDevice(device)
                && (connectionPolicy == CONNECTION_POLICY_FORBIDDEN
                        || connectionPolicy == CONNECTION_POLICY_ALLOWED)) {
            try {
                return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return false;
    }

    /**
     * Get the connection policy of the profile.
     *
     * <p>The connection policy can be any of: {@link #CONNECTION_POLICY_ALLOWED}, {@link
     * #CONNECTION_POLICY_FORBIDDEN}, {@link #CONNECTION_POLICY_UNKNOWN}
     *
     * @param device Bluetooth device
     * @return connection policy of the device
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public @ConnectionPolicy int getConnectionPolicy(@Nullable BluetoothDevice device) {
        if (VDBG) log("getConnectionPolicy(" + device + ")");
        final IBluetoothLeAudio service = getService();
        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled() && isValidDevice(device)) {
            try {
                return service.getConnectionPolicy(device, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return CONNECTION_POLICY_FORBIDDEN;
    }

    private static boolean isValidDevice(@Nullable BluetoothDevice device) {
        if (device == null) return false;

        if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true;
        return false;
    }

    private static void log(String msg) {
        Log.d(TAG, msg);
    }

    /**
     * Gets the current codec status (configuration and capability).
     *
     * @param groupId The group id
     * @return the current codec status
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public @Nullable BluetoothLeAudioCodecStatus getCodecStatus(int groupId) {
        if (DBG) {
            Log.d(TAG, "getCodecStatus(" + groupId + ")");
        }

        final IBluetoothLeAudio service = getService();

        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return service.getCodecStatus(groupId, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
        return null;
    }

    /**
     * Sets the codec configuration preference.
     *
     * @param groupId the groupId
     * @param inputCodecConfig the input codec configuration preference
     * @param outputCodecConfig the output codec configuration preference
     * @throws IllegalStateException if LE Audio Service is null
     * @throws NullPointerException if any of the configs is null
     * @hide
     */
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public void setCodecConfigPreference(
            int groupId,
            @NonNull BluetoothLeAudioCodecConfig inputCodecConfig,
            @NonNull BluetoothLeAudioCodecConfig outputCodecConfig) {
        if (DBG) Log.d(TAG, "setCodecConfigPreference(" + groupId + ")");

        requireNonNull(inputCodecConfig);
        requireNonNull(outputCodecConfig);

        final IBluetoothLeAudio service = getService();

        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
            throw new IllegalStateException("Service is unavailable");
        } else if (mAdapter.isEnabled()) {
            try {
                service.setCodecConfigPreference(
                        groupId, inputCodecConfig, outputCodecConfig, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
    }

    /**
     * Sets broadcast to unicast fallback group.
     *
     * <p>In broadcast handover situations where unicast is unavailable, this group acts as the
     * fallback.
     *
     * <p>A handover can occur when ongoing broadcast is interrupted with unicast streaming request.
     *
     * <p>On fallback group changed, {@link Callback#onBroadcastToUnicastFallbackGroupChanged} will
     * be invoked.
     *
     * @param groupId the ID of the group to switch to if unicast fails during a broadcast handover,
     *     {@link #GROUP_ID_INVALID} when there should be no such fallback group.
     * @see BluetoothLeAudio#getGroupId()
     * @hide
     */
    @FlaggedApi(Flags.FLAG_LEAUDIO_BROADCAST_API_MANAGE_PRIMARY_GROUP)
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public void setBroadcastToUnicastFallbackGroup(int groupId) {
        if (DBG) Log.d(TAG, "setBroadcastToUnicastFallbackGroup(" + groupId + ")");

        final IBluetoothLeAudio service = getService();

        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                service.setBroadcastToUnicastFallbackGroup(groupId, mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }
    }

    /**
     * Gets broadcast to unicast fallback group.
     *
     * <p>In broadcast handover situations where unicast is unavailable, this group acts as the
     * fallback.
     *
     * <p>A broadcast handover can occur when a {@link BluetoothLeBroadcast#startBroadcast} call is
     * successful and there's an active unicast group.
     *
     * @return groupId the ID of the fallback group, {@link #GROUP_ID_INVALID} when adapter is
     *     disabled
     * @hide
     */
    @FlaggedApi(Flags.FLAG_LEAUDIO_BROADCAST_API_MANAGE_PRIMARY_GROUP)
    @SystemApi
    @RequiresBluetoothConnectPermission
    @RequiresPermission(allOf = {BLUETOOTH_CONNECT, BLUETOOTH_PRIVILEGED})
    public int getBroadcastToUnicastFallbackGroup() {
        if (DBG) Log.d(TAG, "getBroadcastToUnicastFallbackGroup()");

        final IBluetoothLeAudio service = getService();

        if (service == null) {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) log(Log.getStackTraceString(new Throwable()));
        } else if (mAdapter.isEnabled()) {
            try {
                return service.getBroadcastToUnicastFallbackGroup(mAttributionSource);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
            }
        }

        return GROUP_ID_INVALID;
    }
}