xref: /interface/sdk-js/api/@ohos.multimedia.avsession.d.ts

/*
* Copyright (c) 2022-2023 Huawei Device Co., Ltd.
* 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.
*/

/**
 * @file
 * @kit AVSessionKit
 */

import type { ErrorCallback, AsyncCallback, Callback } from './@ohos.base';
import { WantAgent } from './@ohos.wantAgent';
import { KeyEvent } from './@ohos.multimodalInput.keyEvent';
import { ElementName } from './bundleManager/ElementName';
import image from './@ohos.multimedia.image';
import audio from './@ohos.multimedia.audio';
import type media from './@ohos.multimedia.media';
import type Context from './application/BaseContext';

/**
 * @namespace avSession
 * @syscap SystemCapability.Multimedia.AVSession.Core
 * @since 9
 */
/**
 * @namespace avSession
 * @syscap SystemCapability.Multimedia.AVSession.Core
 * @atomicservice
 * @since 12
 */

declare namespace avSession {
  /**
   * Create an AVSession instance. An ability can only create one AVSession
   * @param { Context } context - The context of application
   * @param { string } tag - A user-defined name for this session
   * @param { AVSessionType } type - The type of session {@link AVSessionType}
   * @param { AsyncCallback<AVSession> } callback - async callback for AVSession.
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  function createAVSession(context: Context, tag: string, type: AVSessionType, callback: AsyncCallback<AVSession>): void;

  /**
   * Create an AVSession instance. An ability can only create one AVSession
   * @param { Context } context - The context of application
   * @param { string } tag - A user-defined name for this session
   * @param { AVSessionType } type - The type of session {@link AVSessionType}
   * @returns { Promise<AVSession> } Promise for AVSession
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Create an AVSession instance. An ability can only create one AVSession
   * @param { Context } context - The context of application
   * @param { string } tag - A user-defined name for this session
   * @param { AVSessionType } type - The type of session {@link AVSessionType}
   * @returns { Promise<AVSession> } Promise for AVSession
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  function createAVSession(context: Context, tag: string, type: AVSessionType): Promise<AVSession>;

  /**
   * Get all avsession descriptors of the system
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { AsyncCallback<Array<Readonly<AVSessionDescriptor>>> } callback - async callback for an array of AVSessionDescriptors.
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function getAllSessionDescriptors(callback: AsyncCallback<Array<Readonly<AVSessionDescriptor>>>): void;

  /**
   * Get all avsession descriptors of the system
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @returns { Promise<Array<Readonly<AVSessionDescriptor>>> } Promise for an array of AVSessionDescriptors
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function getAllSessionDescriptors(): Promise<Array<Readonly<AVSessionDescriptor>>>;

  /**
   * Get history avsession records. These sessions have been destroyed.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { number } maxSize - Specifies the maximum size of the returned value array.
   * @param { AsyncCallback<Array<Readonly<AVSessionDescriptor>>> } callback - async callback for an array of AVSessionDescriptors.
   * If provided '0' or not provided, the maximum value is determined by the system.
   * @throws { BusinessError } 401 - parameter check failed. Possible causes: 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi Hide this for inner system use
   * @since 10
   */
  function getHistoricalSessionDescriptors(maxSize: number, callback: AsyncCallback<Array<Readonly<AVSessionDescriptor>>>): void;

  /**
   * Get history avsession records. These sessions have been destroyed.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { number } maxSize - Specifies the maximum size of the returned value array.
   * If provided '0' or not provided, the maximum value is determined by the system.
   * @returns { Promise<Array<Readonly<AVSessionDescriptor>>> } Promise for an array of AVSessionDescriptors
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi Hide this for inner system use
   * @since 10
   */
  function getHistoricalSessionDescriptors(maxSize?: number): Promise<Array<Readonly<AVSessionDescriptor>>>;

  /**
   * Get history play list information records.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { number } maxSize - Specifies the maximum size of the returned value array.
   * @param { number } maxAppSize - Specifies the maximum app size of the returned value array.
   * @param { AsyncCallback<Array<Readonly<AVQueueInfo>>> } callback - async callback for an array of AVQueueInfo.
   * If provided '0' or not provided, the maximum value is determined by the system.
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 202 - Not System App.
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi Hide this for inner system use
   * @since 11
   */
  function getHistoricalAVQueueInfos(maxSize: number, maxAppSize: number, callback: AsyncCallback<Array<Readonly<AVQueueInfo>>>): void;

  /**
   * Get history play list information records.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { number } maxSize - Specifies the maximum size of the returned value array.
   * @param { number } maxAppSize - Specifies the maximum app size of the returned value array.
   * @returns { Promise<Array<Readonly<AVQueueInfo>>> } Promise for an array of AVQueueInfo
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi Hide this for inner system use
   * @since 11
   */
  function getHistoricalAVQueueInfos(maxSize: number, maxAppSize: number): Promise<Array<Readonly<AVQueueInfo>>>;

  /**
   * Create an avsession controller
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { string } sessionId - Specifies the sessionId to create the controller.
   * @param { AsyncCallback<AVSessionController> } callback - async callback for AVSessionController.
   * If provided 'default', the system will create a default controller, Used to control the system default session
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600102 - The session does not exist.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function createController(sessionId: string, callback: AsyncCallback<AVSessionController>): void;

  /**
   * Create an avsession controller
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { string } sessionId - Specifies the sessionId to create the controller.
   * If provided 'default', the system will create a default controller, Used to control the system default session
   * @returns { Promise<AVSessionController> } Promise for AVSessionController
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600102 - The session does not exist.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function createController(sessionId: string): Promise<AVSessionController>;

  /**
   * Cast Audio to the remote devices or cast back local device
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { SessionToken | 'all' } session - Specifies the sessionId which to send to remote.
   * @param { Array<audio.AudioDeviceDescriptor> } audioDevices - Specifies the audio devices to cast.
   * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
   * 'all' means cast all the media audio of this device to remote.
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600102 - The session does not exist.
   * @throws { BusinessError } 6600104 - The remote session connection failed.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function castAudio(session: SessionToken | 'all', audioDevices: Array<audio.AudioDeviceDescriptor>, callback: AsyncCallback<void>): void;

  /**
   * Cast Audio to the remote devices or cast back local device
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { SessionToken | 'all' } session - Specifies the sessionId which to send to remote.
   * @param { Array<audio.AudioDeviceDescriptor> } audioDevices - Specifies the audio devices to cast.
   * @returns { Promise<void> } void promise when executed successfully
   * 'all' means cast all the media audio of this device to remote.
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600102 - The session does not exist.
   * @throws { BusinessError } 6600104 - The remote session  connection failed.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function castAudio(session: SessionToken | 'all', audioDevices: Array<audio.AudioDeviceDescriptor>): Promise<void>;

  /**
   * Start an application for media playback.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { string } bundleName - Specifies the bundleName which to be started.
   * @param { string } assetId - Specifies the assetId to be started.
   * @returns { Promise<void> } void promise when executed successfully
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 202 - Not System App. Interface caller is not a system app.
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types. 3.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 11
   */
  function startAVPlayback(bundleName: string, assetId: string): Promise<void>;

  /**
   * Session token. Used to judge the legitimacy of the session.
   * @typedef SessionToken
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  interface SessionToken {
    /**
     * The unique session id of the avsession object
     * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    sessionId: string;

    /**
     * Process id of session
     * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    pid?: number;

    /**
     * User id
     * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    uid?: number;
  }

  /**
   * Register session create callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'sessionCreate' } type - Registration Type, 'sessionCreate'
   * @param { function } callback - Used to handle ('sessionCreate' command)
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function on(type: 'sessionCreate', callback: (session: AVSessionDescriptor) => void): void;

  /**
   * Register session destroy callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'sessionDestroy' } type - Registration Type, 'sessionDestroy'
   * @param { function } callback - Used to handle ('sessionDestroy' command)
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function on(type: 'sessionDestroy', callback: (session: AVSessionDescriptor) => void): void;

  /**
   * Register top session changed callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'topSessionChange' } type - Registration Type, top priority session change, 'topSessionChange'
   * @param { function } callback - Used to handle ('topSessionChange' command)
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function on(type: 'topSessionChange', callback: (session: AVSessionDescriptor) => void): void;

  /**
   * Unregister session create callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'sessionCreate' } type - Registration Type, session creation, 'sessionCreate'
   * @param { function } callback - Used to unregister listener for ('sessionCreate') command
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function off(type: 'sessionCreate', callback?: (session: AVSessionDescriptor) => void): void;

  /**
   * Unregister session destroy callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'sessionDestroy' } type - Registration Type, session deletion, 'sessionDestroy'
   * @param { function } callback - Used to unregister listener for ('sessionDestroy') command
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function off(type: 'sessionDestroy', callback?: (session: AVSessionDescriptor) => void): void;

  /**
   * Unregister top session changed callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'topSessionChange' } type - Registration Type, top priority session change, 'topSessionChange'
   * @param { function } callback - Used to unregister listener for ('topSessionChange') command
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function off(type: 'topSessionChange', callback?: (session: AVSessionDescriptor) => void): void;

  /**
   * Register Session service death callback, notifying the application to clean up resources.
   * @param { 'sessionServiceDie' } type - Registration Type, 'sessionServiceDie'
   * @param { function } callback - Used to handle ('sessionServiceDie') command.
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @systemapi
   * @since 9
   */
  function on(type: 'sessionServiceDie', callback: () => void): void;

  /**
   * Unregister Session service death callback, notifying the application to clean up resources.
   * @param { 'sessionServiceDie' } type - Registration Type, 'sessionServiceDie'
   * @param { function } callback -  Used to unregister listener for ('sessionServiceDie') command.
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @systemapi
   * @since 9
   */
  function off(type: 'sessionServiceDie', callback?: () => void): void;

  /**
   * Send system media key event.The system automatically selects the recipient.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { KeyEvent } event - The key event to be sent
   * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600105 - Invalid session command.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function sendSystemAVKeyEvent(event: KeyEvent, callback: AsyncCallback<void>): void;

  /**
   * Send system media key event.The system automatically selects the recipient.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { KeyEvent } event - The key event to be sent
   * @returns { Promise<void> } void promise when executed successfully
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600105 - Invalid session command.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function sendSystemAVKeyEvent(event: KeyEvent): Promise<void>;

  /**
   * Send system control command.The system automatically selects the recipient.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { AVControlCommand } command - The command to be sent. See {@link AVControlCommand}
   * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600105 - Invalid session command.
   * @throws { BusinessError } 6600107 - Too many commands or events.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function sendSystemControlCommand(command: AVControlCommand, callback: AsyncCallback<void>): void;

  /**
   * Send system control command.The system automatically selects the recipient.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { AVControlCommand } command - The command to be sent. See {@link AVControlCommand}
   * @returns { Promise<void> } void promise when executed successfully
   * @throws { BusinessError } 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws { BusinessError } 6600101 - Session service exception.
   * @throws { BusinessError } 6600105 - Invalid session command.
   * @throws { BusinessError } 6600107 - Too many commands or events.
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  function sendSystemControlCommand(command: AVControlCommand): Promise<void>;

  /**
   * Define different protocol capability
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @since 11
   */
  /**
   * Define different protocol capability
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @atomicservice
   * @since 12
   */
  enum ProtocolType {
    /**
     * The default cast type "local", media can be routed on the same device,
     * including internal speakers or audio jack on the device itself, A2DP devices.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    /**
     * The default cast type "local", media can be routed on the same device,
     * including internal speakers or audio jack on the device itself, A2DP devices.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    TYPE_LOCAL = 0,

    /**
     * Cast+ mirror capability
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    TYPE_CAST_PLUS_MIRROR = 1,

    /**
     * The Cast+ Stream indicating the media is presenting on a different device
     * the application need get an AVCastController to control remote playback.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    /**
     * The Cast+ Stream indicating the media is presenting on a different device
     * the application need get an AVCastController to control remote playback.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    TYPE_CAST_PLUS_STREAM = 2,

    /**
     * The DLNA type indicates the device supports DLNA protocol,
     * the application needs to get an AVCastController to control remote playback.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    TYPE_DLNA = 4,
  }

  /**
   * Start device discovery.
   * @param { AsyncCallback<void> } callback a callback function
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function startCastDeviceDiscovery(callback: AsyncCallback<void>): void;

  /**
   * Start device discovery.
   * @param { number } filter device filter when discovering, can be an union of {@link ProtocolType}
   * @param { AsyncCallback<void> } callback a callback function
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function startCastDeviceDiscovery(filter: number, callback: AsyncCallback<void>): void;

  /**
   * Start device discovery.
   * @param { number } filter device filter when discovering, can be an union of {@link ProtocolType}
   * @returns { Promise<void> } Promise for the result
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  /**
   * Start device discovery.
   * @param { number } [filter] - device filter when discovering, can be an union of {@link ProtocolType}
   * @param { Array<string> } [drmSchemes] - filter drm-enabled devices which are represented by uuid.
   * It is effective when protocol type is TYPE_CAST_PLUS_STREAM.
   * @returns { Promise<void> } Promise for the result
   * @throws { BusinessError } 202 - Not System App.
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types. 3.Parameter verification failed.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 12
   */
  function startCastDeviceDiscovery(filter?: number, drmSchemes?: Array<string>): Promise<void>;

  /**
   * Stop device discovery.
   * @param { AsyncCallback<void> } callback a callback function
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function stopCastDeviceDiscovery(callback: AsyncCallback<void>): void;

  /**
   * Stop device discovery.
   * @returns { Promise<void> } Promise for the result
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function stopCastDeviceDiscovery(): Promise<void>;

  /**
   * Enable or disable device to be discoverable, used at sink side.
   * @param { boolean } enable true: can be discoverable, false: cannot be discoverable.
   * @param { AsyncCallback<void> } callback a callback function
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function setDiscoverable(enable: boolean, callback: AsyncCallback<void>): void;

  /**
   * Enable or disable device to be discoverable, used at sink side.
   * @param { boolean } enable true: can be discoverable, false: cannot be discoverable.
   * @returns { Promise<void> } Promise for the result
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function setDiscoverable(enable: boolean): Promise<void>;

  /**
   * Register device discovery callback
   * @param { 'deviceAvailable' } type Registration Type
   * @param { function } callback Used to returns the device info
   * @throws {BusinessError} 201 - permission denied
   * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function on(type: 'deviceAvailable', callback: (device: OutputDeviceInfo) => void): void;

  /**
   * Unregister device discovery callback
   * @param { 'deviceAvailable' } type Registration Type
   * @param { function } callback Used to returns the device info
   * @throws {BusinessError} 201 - permission denied
   * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function off(type: 'deviceAvailable', callback?: (device: OutputDeviceInfo) => void): void;

  /**
   * Register device offline callback
   * @param { 'deviceOffline' } type - Registration Type
   * @param { function } callback - Used to returns the device info
   * @throws {BusinessError} 201 - permission denied
   * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 11
   */
  function on(type: 'deviceOffline', callback: (deviceId: string) => void): void;

  /**
   * Unregister device offline callback
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { 'deviceOffline' } type - Registration Type
   * @param { function } callback - Used to returns the device info
   * @throws {BusinessError} 201 - permission denied
   * @throws {BusinessError} 202 - Not System App.
   * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types.
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 11
   */
  function off(type: 'deviceOffline', callback?: (deviceId: string) => void): void;

  /**
   * Register a callback to retrieve an avsession cast controller.
   * This function can be used at both side to get the same controller to do the playback control.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { string } sessionId Specifies the sessionId to get controller.
   * @param { AsyncCallback<AVCastController> } callback - async callback for the AVCastController.
   * @throws {BusinessError} 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws {BusinessError} 6600101 - Session service exception
   * @throws {BusinessError} 6600102 - session does not exist
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function getAVCastController(sessionId: string, callback: AsyncCallback<AVCastController>): void;

  /**
   * Get the current session's remote controller client.
   * If the avsession is not under casting state, the controller will return null.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { string } sessionId Specifies the sessionId to get controller.
   * @returns { Promise<AVCastController> } Promise for the AVCastController
   * @throws {BusinessError} 201 - permission denied
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Parameter verification failed.
   * @throws {BusinessError} 6600101 - server exception
   * @throws {BusinessError} 6600102 - session does not exist
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function getAVCastController(sessionId: string): Promise<AVCastController>;

  /**
   * Cast resource to remote device.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { SessionToken } session Specifies the sessionId which is to be casted.
   * @param { OutputDeviceInfo } device Specifies the device to cast.
   * @param { AsyncCallback<void> } callback A callback instance used to return when start casting.
   * @throws {BusinessError} 201 - permission denied
   * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types. 3.Parameter verification failed.
   * @throws {BusinessError} 6600101 - Session service exception
   * @throws {BusinessError} 6600108 - Device connecting failed
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function startCasting(session: SessionToken, device: OutputDeviceInfo, callback: AsyncCallback<void>): void;

  /**
   * Cast resource to remote device.
   * @permission ohos.permission.MANAGE_MEDIA_RESOURCES
   * @param { SessionToken } session Specifies the sessionId which is to be casted.
   * @param { OutputDeviceInfo } device Specifies the device to cast.
   * @returns { Promise<void> } Promise for the result
   * @throws {BusinessError} 201 - permission denied
   * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types. 3.Parameter verification failed.
   * @throws {BusinessError} 6600101 - Session service exception
   * @throws {BusinessError} 6600108 - Device connecting failed
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function startCasting(session: SessionToken, device: OutputDeviceInfo): Promise<void>;

  /**
   * Stop current cast and disconnect device connection.
   * @param { SessionToken } session Specifies the sessionId which is to be stopped.
   * @param { AsyncCallback<void> } callback A callback instance used to return when cast stopped completed.
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types. 3.Parameter verification failed.
   * @throws { BusinessError } 6600109 - The remote connection is not established
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function stopCasting(session: SessionToken, callback: AsyncCallback<void>): void;

  /**
   * Stop current cast and disconnect device connection.
   * @param { SessionToken } session Specifies the sessionId which is to be stopped.
   * @returns { Promise<void> } Promise for the result
   * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
   * 2.Incorrect parameter types. 3.Parameter verification failed.
   * @throws { BusinessError } 6600109 - The remote connection is not established
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @systemapi
   * @since 10
   */
  function stopCasting(session: SessionToken): Promise<void>;

  /**
   * Session type, support audio & video
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Session type, support audio & video, voice_call
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  /**
   * Session type supports audio & video, voice_call, video_call
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  type AVSessionType = 'audio' | 'video' | 'voice_call' | 'video_call';

  /**
   * AVSession object.
   * @interface AVSession
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * AVSession object.
   * @interface AVSession
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface AVSession {
    /**
     * unique session Id
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * unique session Id
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    readonly sessionId: string;

    /**
     * Get current session type
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Get current session type
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    readonly sessionType: AVSessionType;

    /**
     * Set the metadata of this session.
     * In addition to the required properties, users can fill in partially supported properties
     * @param { AVMetadata } data {@link AVMetadata}
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setAVMetadata(data: AVMetadata, callback: AsyncCallback<void>): void;

    /**
     * Set the metadata of this session.
     * In addition to the required properties, users can fill in partially supported properties
     * @param { AVMetadata } data {@link AVMetadata}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Set the metadata of this session.
     * In addition to the required properties, users can fill in partially supported properties
     * @param { AVMetadata } data {@link AVMetadata}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    setAVMetadata(data: AVMetadata): Promise<void>;

    /**
     * Set the metadata related with current call.
     * @param { CallMetadata } data - {@link CallMetadata}
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types. 3.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    setCallMetadata(data: CallMetadata, callback: AsyncCallback<void>): void;

    /**
     * Set the metadata related with current call.
     * @param { CallMetadata } data - {@link CallMetadata}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types. 3.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    setCallMetadata(data: CallMetadata): Promise<void>;

    /**
     * Set the playback state of this session.
     * @param { AVPlaybackState } state {@link AVPlaybackState}
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setAVPlaybackState(state: AVPlaybackState, callback: AsyncCallback<void>): void;

    /**
     * Set the playback state of this session.
     * @param { AVPlaybackState } state {@link AVPlaybackState}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Set the playback state of this session.
     * @param { AVPlaybackState } state {@link AVPlaybackState}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    setAVPlaybackState(state: AVPlaybackState): Promise<void>;

    /**
     * Set the call state of this session.
     * @param { AVCallState } state - {@link AVCallState}
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    setAVCallState(state: AVCallState, callback: AsyncCallback<void>): void;

    /**
     * Set the call state of this session.
     * @param { AVCallState } state - {@link AVCallState}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    setAVCallState(state: AVCallState): Promise<void>;

    /**
     * Set the ability to start the session corresponding to
     * @param { WantAgent } ability - The WantAgent for launch the ability
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setLaunchAbility(ability: WantAgent, callback: AsyncCallback<void>): void;

    /**
     * Set the ability to start the session corresponding to
     * @param { WantAgent } ability - The WantAgent for launch the ability
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setLaunchAbility(ability: WantAgent): Promise<void>;

    /**
     * Dispatch the session event of this session.
     * @param { string } event - Session event name to dispatch
     * @param { object } args - The parameters of session event
     * @param { AsyncCallback<void>} callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types. 3.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    dispatchSessionEvent(event: string, args: {[key: string]: Object}, callback: AsyncCallback<void>): void;

    /**
     * Dispatch the session event of this session.
     * @param { string } event - Session event name to dispatch
     * @param { object } args - The parameters of session event
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types. 3.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    dispatchSessionEvent(event: string, args: {[key: string]: Object}): Promise<void>;

    /**
     * Set the playlist of queueItem. Identifies the content of the playlist presented by this session.
     * @param { Array<AVQueueItem> } items - An array of the AVQueueItem
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setAVQueueItems(items: Array<AVQueueItem>, callback: AsyncCallback<void>): void;

    /**
     * Set the playlist of queueItem. Identifies the content of the playlist presented by this session.
     * @param { Array<AVQueueItem> } items - An array of the AVQueueItem
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setAVQueueItems(items: Array<AVQueueItem>): Promise<void>;

    /**
     * Set the name of the playlist presented by this session.
     * @param { string } title - The name of the playlist
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setAVQueueTitle(title: string, callback: AsyncCallback<void>): void;

    /**
     * Set the name of the playlist presented by this session.
     * @param { string } title - The name of the playlist
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setAVQueueTitle(title: string): Promise<void>;

    /**
     * Set the custom media packets for this session.
     * @param { object } extras - The custom media packets
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setExtras(extras: {[key: string]: Object}, callback: AsyncCallback<void>): void;

    /**
     * Set the custom media packets for this session.
     * @param { object } extras - The custom media packets
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    setExtras(extras: {[key: string]: Object}): Promise<void>;

    /**
     * Get the current session's own controller
     * @param { AsyncCallback<AVSessionController> } callback - async callback for the AVSessionController.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getController(callback: AsyncCallback<AVSessionController>): void;

    /**
     * Get the current session's own controller
     * @returns { Promise<AVSessionController> } Promise for the AVSessionController
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getController(): Promise<AVSessionController>;

    /**
     * Get the cast controller when the session is casted to remote device.
     * If the avsession is not under casting state, the controller will return null.
     * @param { AsyncCallback<AVCastController> } callback - async callback for the AVCastController.
     * @throws {BusinessError} 6600102 - {@link #ERR_CODE_SESSION_NOT_EXIST} - session does not exist
     * @throws {BusinessError} 6600110 - 6600109 - remote connection does not exist
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    getAVCastController(callback: AsyncCallback<AVCastController>): void;

    /**
     * Get the cast controller when the session is casted to remote device.
     * If the avsession is not under casting state, the controller will return null.
     * @returns { Promise<AVCastController> } Promise for the AVCastController
     * @throws {BusinessError} 6600102 - {@link #ERR_CODE_SESSION_NOT_EXIST} session does not exist
     * @throws {BusinessError} 6600110 - 6600109 - remote connection does not exist
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Get the cast controller when the session is casted to remote device.
     * If the avsession is not under casting state, the controller will return null.
     * @returns { Promise<AVCastController> } Promise for the AVCastController
     * @throws {BusinessError} 6600102 - {@link #ERR_CODE_SESSION_NOT_EXIST} session does not exist
     * @throws {BusinessError} 6600110 - 6600109 - remote connection does not exist
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    getAVCastController(): Promise<AVCastController>;

    /**
     * Get output device information
     * @param { AsyncCallback<OutputDeviceInfo> } callback - async callback for the OutputDeviceInfo.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getOutputDevice(callback: AsyncCallback<OutputDeviceInfo>): void;

    /**
     * Get output device information
     * @returns { Promise<OutputDeviceInfo> } Promise for the OutputDeviceInfo
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Get output device information
     * @returns { Promise<OutputDeviceInfo> } Promise for the OutputDeviceInfo
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    getOutputDevice(): Promise<OutputDeviceInfo>;

    /**
     * Get output device information
     * @returns { OutputDeviceInfo } the OutputDeviceInfo
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getOutputDeviceSync(): OutputDeviceInfo;

    /**
     * Get all the current virtual display information for extended display.
     * @returns { Promise<Array<CastDisplayInfo>> } Promise for the CastDisplayInfo
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    getAllCastDisplays(): Promise<Array<CastDisplayInfo>>;

    /**
     * Register play command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'play' } type - Command to register 'play'.
     * @param { function } callback - Used to handle ('play') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'play', callback: () => void): void;

    /**
     * Register pause command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'pause' } type - Command to register 'pause'.
     * @param { function } callback - Used to handle ('pause') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'pause', callback: () => void): void;

    /**
     * Register stop command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'stop' } type - Command to register 'stop'.
     * @param { function } callback - Used to handle ('stop') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'stop', callback: () => void): void;

    /**
     * Register playNext command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'playNext' } type - Command to register 'playNext'.
     * @param { function } callback - Used to handle ('playNext') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'playNext', callback: () => void): void;

    /**
     * Register playPrevious command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'playPrevious' } type - Command to register 'playPrevious'.
     * @param { function } callback - Used to handle ('playPrevious') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'playPrevious', callback: () => void): void;

    /**
     * Register fastForward command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'fastForward' } type - Command to register 'fastForward'.
     * @param { function } callback - Used to handle ('fastForward') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'fastForward', callback: (time ?: number) => void): void;

    /**
     * Register rewind command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'rewind' } type - Command to register 'rewind'.
     * @param { function } callback - Used to handle ('rewind') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'rewind', callback: (time ?: number) => void): void;

    /**
     * Unregister play command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'play' } type - Command to register 'play'.
     * @param { function } callback - Used to handle ('play') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'play', callback?: () => void): void;

    /**
     * Unregister pause command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'pause' } type - Command to register 'pause'.
     * @param { function } callback - Used to handle ('pause') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'pause', callback?: () => void): void;

    /**
     * Unregister stop command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'stop' } type - Command to register 'stop'.
     * @param { function } callback - Used to handle ('stop') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'stop', callback?: () => void): void;

    /**
     * Unregister playNext command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'playNext' } type - Command to register 'playNext'.
     * @param { function } callback - Used to handle ('playNext') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'playNext', callback?: () => void): void;

    /**
     * Unregister playPrevious command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'playPrevious' } type - Command to register 'playPrevious'.
     * @param { function } callback - Used to handle ('playPrevious') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'playPrevious', callback?: () => void): void;

    /**
     * Unregister fastForward command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'fastForward' } type - Command to register 'fastForward'.
     * @param { function } callback - Used to handle ('fastForward') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'fastForward', callback?: () => void): void;

    /**
     * Unregister rewind command callback.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'rewind' } type - Command to register 'rewind'.
     * @param { function } callback - Used to handle ('rewind') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'rewind', callback?: () => void): void;

    /**
     * Register playFromAssetId command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * When canceling the callback, need to update the supported commands list.
     * Each playback command only supports registering one callback,
     * and the new callback will replace the previous one.
     * @param { 'playFromAssetId' } type - Command to register 'playFromAssetId'.
     * @param { function } callback - Used to handle ('playFromAssetId') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    on(type: 'playFromAssetId', callback: (assetId: number) => void): void;

    /**
     * Unregister playFromAssetId command callback.
     * @param { 'playFromAssetId' } type - Command to register 'playFromAssetId'.
     * @param { function } callback - Used to handle ('playFromAssetId') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    off(type: 'playFromAssetId', callback?: (assetId: number) => void): void;

    /**
     * Register seek command callback
     * @param { 'seek' } type - Registration Type 'seek'
     * @param { function } callback - Used to handle seek command.The callback provides the seek time(ms)
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'seek', callback: (time: number) => void): void;

    /**
     * Unregister seek command callback
     * @param { 'seek' } type - Registration Type 'seek'
     * @param { function } callback - Used to handle seek command.The callback provides the seek time(ms)
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'seek', callback?: (time: number) => void): void;

    /**
     * Register setSpeed command callback
     * @param { 'setSpeed' } type - Registration Type 'setSpeed'
     * @param { function } callback - Used to handle setSpeed command.The callback provides the speed value
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'setSpeed', callback: (speed: number) => void): void;

    /**
     * Unregister setSpeed command callback
     * @param { 'setSpeed' } type - Registration Type 'setSpeed'
     * @param { function } callback - Used to handle setSpeed command.The callback provides the speed value
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'setSpeed', callback?: (speed: number) => void): void;

    /**
     * Register setLoopMode command callback
     * @param { 'setLoopMode' } type - Registration Type 'setLoopMode'
     * @param { function } callback - Used to handle setLoopMode command.The callback provides the {@link LoopMode}
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'setLoopMode', callback: (mode: LoopMode) => void): void;

    /**
     * Unregister setLoopMode command callback
     * @param { 'setLoopMode' } type - Registration Type 'setLoopMode'
     * @param { function } callback - Used to handle setLoopMode command.The callback provides the {@link LoopMode}
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'setLoopMode', callback?: (mode: LoopMode) => void): void;

    /**
     * Register toggle favorite command callback
     * @param { 'toggleFavorite' } type - Registration Type 'toggleFavorite'
     * @param { function } callback - Used to handle toggleFavorite command.The callback provides
     * the assetId for which the favorite status needs to be switched.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'toggleFavorite', callback: (assetId: string) => void): void;

    /**
     * Unregister toggle favorite command callback
     * @param { 'toggleFavorite' } type - Registration Type 'toggleFavorite'
     * @param { function } callback - Used to handle toggleFavorite command.The callback provides
     * the assetId for which the favorite status needs to be switched.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'toggleFavorite', callback?: (assetId: string) => void): void;

    /**
     * Register media key handling callback
     * @param { 'handleKeyEvent' } type - Registration Type 'handleKeyEvent'
     * @param { function } callback - Used to handle key events.The callback provides the KeyEvent
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'handleKeyEvent', callback: (event: KeyEvent) => void): void;

    /**
     * Unregister media key handling callback
     * @param { 'handleKeyEvent' } type - Registration Type 'handleKeyEvent'
     * @param { function } callback - Used to handle key events.The callback provides the KeyEvent
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'handleKeyEvent', callback?: (event: KeyEvent) => void): void;

    /**
     * Register session output device change callback
     * @param { 'outputDeviceChange' } type - Registration Type 'outputDeviceChange'
     * @param { function } callback - Used to handle output device changed.
     * The callback provide the new device info {@link OutputDeviceInfo} and related connection state {@link ConnectionState}.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600102 - The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Register session output device change callback
     * @param { 'outputDeviceChange' } type - Registration Type 'outputDeviceChange'
     * @param { function } callback - Used to handle output device changed.
     * The callback provide the new device info {@link OutputDeviceInfo} and related connection state {@link ConnectionState}.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600102 - The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    on(type: 'outputDeviceChange', callback: (state: ConnectionState, device: OutputDeviceInfo) => void): void;

    /**
     * Unregister session output device change callback
     * @param { 'outputDeviceChange' } type - Registration Type 'outputDeviceChange'
     * @param { function } callback - Used to handle output device changed.
     * The callback provide the new device info {@link OutputDeviceInfo} and related connection state {@link ConnectionState}.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600102 - The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Unregister session output device change callback
     * @param { 'outputDeviceChange' } type - Registration Type 'outputDeviceChange'
     * @param { function } callback - Used to handle output device changed.
     * The callback provide the new device info {@link OutputDeviceInfo} and related connection state {@link ConnectionState}.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600102 - The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    off(type: 'outputDeviceChange', callback?: (state: ConnectionState, device: OutputDeviceInfo) => void): void;

    /**
     * Register session custom command change callback
     * @param { 'commonCommand' } type - Registration Type 'commonCommand'
     * @param { function } callback - Used to handle event when the common command is received
     * The callback provide the command name and command args
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'commonCommand', callback: (command: string, args: {[key: string]: Object}) => void): void;

    /**
     * Unregister session custom command change callback
     * @param { 'commonCommand' } type - Registration Type 'commonCommand'
     * @param { function } callback - Used to cancel a specific listener
     * The callback provide the command name and command args
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'commonCommand', callback?: (command: string, args: {[key: string]: Object}) => void): void;

    /**
     * Register the item to play from the playlist change callback
     * @param { 'skipToQueueItem' } type - Registration Type 'skipToQueueItem'
     * @param { function } callback - Used to handle the item to be played.
     * The callback provide the new device info {@link OutputDeviceInfo}
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'skipToQueueItem', callback: (itemId: number) => void): void;

    /**
     * Unregister the item to play from the playlist change callback
     * @param { 'skipToQueueItem' } type - Registration Type 'skipToQueueItem'
     * @param { function } callback - Used to handle the item to be played.
     * The callback provide the new device info {@link OutputDeviceInfo}
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'skipToQueueItem', callback?: (itemId: number) => void): void;

    /**
     * Register answer command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * @param { 'answer' } type - Command to register 'answer'.
     * @param { Callback<void> } callback - Used to handle ('answer') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    on(type: 'answer', callback: Callback<void>): void;

    /**
     * Unregister answer command callback.
     * @param { 'answer' } type - Command to register 'answer'.
     * @param { Callback<void> } callback - Used to handle ('answer') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    off(type: 'answer', callback?: Callback<void>): void;

    /**
     * Register hangUp command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * @param { 'hangUp' } type - Command to register 'hangUp'.
     * @param { Callback<void> } callback - Used to handle ('hangUp') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    on(type: 'hangUp', callback: Callback<void>): void;

    /**
     * Unregister hangUp command callback.
     * @param { 'hangUp' } type - Command to register 'hangUp'.
     * @param { Callback<void> } callback - Used to handle ('hangUp') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    off(type: 'hangUp', callback?: Callback<void>): void;

    /**
     * Register toggleCallMute command callback.
     * As long as it is registered, it means that the ability supports this command.
     * If you cancel the callback, you need to call off {@link off}
     * @param { 'toggleCallMute' } type - Command to register 'toggleCallMute'.
     * @param { Callback<void> } callback - Used to handle ('toggleCallMute') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    on(type: 'toggleCallMute', callback: Callback<void>): void;

    /**
     * Unregister toggleCallMute command callback.
     * @param { 'toggleCallMute' } type - Command to register 'toggleCallMute'.
     * @param { Callback<void> } callback - Used to handle ('toggleCallMute') command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    off(type: 'toggleCallMute', callback?: Callback<void>): void;

    /**
     * Register listener for cast display information changed.
     * @param { 'castDisplayChange' } type - Type of the 'castDisplayChange' to listen for.
     * @param { Callback<CastDisplayInfo> } callback - Callback used to return cast display information.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600102 - The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    on(type: 'castDisplayChange', callback: Callback<CastDisplayInfo>): void;

    /**
     * Unregister listener for cast display information changed.
     * @param { 'castDisplayChange' } type - Type of the 'castDisplayChange' to listen for.
     * @param { Callback<CastDisplayInfo> } callback - Callback used to return cast display information.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600102 - The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    off(type: 'castDisplayChange', callback?: Callback<CastDisplayInfo>): void;

    /**
     * Stop current cast and disconnect device connection.
     * @param { AsyncCallback<void> } callback A callback instance used to return when cast stopped completed.
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    stopCasting(callback: AsyncCallback<void>): void;

    /**
     * Stop current cast and disconnect device connection.
     * @returns { Promise<void> } void result promise when executed successfully
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Stop current cast and disconnect device connection.
     * @returns { Promise<void> } void result promise when executed successfully
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    stopCasting(): Promise<void>;

    /**
     * Activate the session, indicating that the session can accept control commands
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the session is activated.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    activate(callback: AsyncCallback<void>): void;

    /**
     * Activate the session, indicating that the session can accept control commands
     * @returns { Promise<void> } void result promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Activate the session, indicating that the session can accept control commands
     * @returns { Promise<void> } void result promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    activate(): Promise<void>;

    /**
     * Deactivate the session, indicating that the session not ready to accept control commands
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the session is deactivated.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    deactivate(callback: AsyncCallback<void>): void;

    /**
     * Deactivate the session, indicating that the session not ready to accept control commands
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Deactivate the session, indicating that the session not ready to accept control commands
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    deactivate(): Promise<void>;

    /**
     * Destroy this session, the server will clean up the session resources
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    destroy(callback: AsyncCallback<void>): void;

    /**
     * Destroy this session, the server will clean up the session resources
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Destroy this session, the server will clean up the session resources
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    destroy(): Promise<void>;
  }

  /**
   * The type of control command
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @since 10
   */
  /**
   * The type of control command
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @atomicservice
   * @since 12
   */
  type AVCastControlCommandType = 'play' | 'pause' | 'stop' | 'playNext' | 'playPrevious' | 'fastForward' | 'rewind' |
  'seek' | 'setVolume' | 'setSpeed' | 'setLoopMode' | 'toggleFavorite' | 'toggleMute';

  /**
   * The definition of command to be sent to the session
   * @interface AVCastControlCommand
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @since 10
   */
  /**
   * The definition of command to be sent to the session
   * @interface AVCastControlCommand
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @atomicservice
   * @since 12
   */
  interface AVCastControlCommand {
    /**
     * The command value {@link AVCastControlCommandType}
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * The command value {@link AVCastControlCommandType}
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    command: AVCastControlCommandType;

    /**
     * Parameter carried in the command.
     * The seek command must carry the number parameter.
     * The setVolume command must carry the number parameter.
     * The toggleFavorite command must carry the {@link AVMediaDescription.assetId} parameter.
     * The setSpeed command must carry the {@link #media.PlaybackSpeed} parameter.
     * The setLoopMode command must carry the {@link LoopMode} parameter.
     * Other commands do not need to carry parameters.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Parameter carried in the command.
     * The seek command must carry the number parameter.
     * The setVolume command must carry the number parameter.
     * The toggleFavorite command must carry the {@link AVMediaDescription.assetId} parameter.
     * The setSpeed command must carry the {@link #media.PlaybackSpeed} parameter.
     * The setLoopMode command must carry the {@link LoopMode} parameter.
     * Other commands do not need to carry parameters.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    parameter?: media.PlaybackSpeed | number | string | LoopMode;
  }

  /**
   * AVCastController definition used to implement a remote control when a cast is connected
   * @interface AVCastController
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @since 10
   */
  /**
   * AVCastController definition used to implement a remote control when a cast is connected
   * @interface AVCastController
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @atomicservice
   * @since 12
   */
  interface AVCastController {
    /**
     * Set a surface instance to display playing view, used at sink side.
     * @param { string } surfaceId - surface id, video player will use this id get a surface instance.
     * @param { AsyncCallback<void> } callback - A callback instance used to return when set surface completed.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    setDisplaySurface(surfaceId: string, callback: AsyncCallback<void>): void;

    /**
     * Set a surface instance to display playing view, used at sink side.
     * @param { string } surfaceId - surface id, video player will use this id get a surface instance.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    setDisplaySurface(surfaceId: string): Promise<void>;

    /**
     * Get the playback status of the current player
     * @param { AsyncCallback<AVPlaybackState> } callback - The triggered asyncCallback when (getAVPlaybackState).
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    getAVPlaybackState(callback: AsyncCallback<AVPlaybackState>): void;

    /**
     * Get the playback status of the current player
     * @returns { Promise<AVPlaybackState> } (AVPlaybackState) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Get the playback status of the current player
     * @returns { Promise<AVPlaybackState> } (AVPlaybackState) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    getAVPlaybackState(): Promise<AVPlaybackState>;

    /**
     * Send control commands to remote player
     * @param { AVCastControlCommand } command The command to be send.
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600105 - Invalid session command
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    sendControlCommand(command: AVCastControlCommand, callback: AsyncCallback<void>): void;

    /**
     * Send control commands to remote player
     * @param { AVCastControlCommand } command The command to be send.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600105 - Invalid session command
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
     /**
     * Send control commands to remote player
     * @param { AVCastControlCommand } command The command to be send.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600105 - Invalid session command
     * @throws { BusinessError } 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    sendControlCommand(command: AVCastControlCommand): Promise<void>;

    /**
     * Play the current item, should contain mediaUri otherwise the playback will fail.
     * @param { AVQueueItem } item media item info.
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws {BusinessError} 6600101 - Session service exception
     * @throws {BusinessError} 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    start(item: AVQueueItem, callback: AsyncCallback<void>): void;

    /**
     * Play the current item, should contain mediaUri otherwise the playback will fail.
     * @param { AVQueueItem } item media item info.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws {BusinessError} 6600101 - Session service exception
     * @throws {BusinessError} 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Play the current item, should contain mediaUri otherwise the playback will fail.
     * @param { AVQueueItem } item media item info.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws {BusinessError} 6600101 - Session service exception
     * @throws {BusinessError} 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    start(item: AVQueueItem): Promise<void>;

    /**
     * Load the current item and mediaUri can be null, this is needed for sink media information displaying
     * @param { AVQueueItem } item media item info.
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws {BusinessError} 6600101 - Session service exception
     * @throws {BusinessError} 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    prepare(item: AVQueueItem, callback: AsyncCallback<void>): void;

    /**
     * Load the current item and mediaUri can be null, this is needed for sink media information displaying
     * @param { AVQueueItem } item media item info.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws {BusinessError} 6600101 - Session service exception
     * @throws {BusinessError} 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Load the current item and mediaUri can be null, this is needed for sink media information displaying
     * @param { AVQueueItem } item media item info.
     * @returns { Promise<void> } Promise used to return the result.
     * @throws {BusinessError} 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws {BusinessError} 6600101 - Session service exception
     * @throws {BusinessError} 6600109 - The remote connection is not established
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    prepare(item: AVQueueItem): Promise<void>;

    /**
     * Get the current playing item
     * @param { AsyncCallback<AVQueueItem> } callback - The triggered asyncCallback.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    getCurrentItem(callback: AsyncCallback<AVQueueItem>): void;

    /**
     * Get the current playing item
     * @returns { Promise<AVQueueItem> } (AVQueueItem) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Get the current playing item
     * @returns { Promise<AVQueueItem> } (AVQueueItem) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    getCurrentItem(): Promise<AVQueueItem>;

    /**
     * Get commands supported by the current cast controller
     * @param { AsyncCallback<Array<AVCastControlCommandType>> } callback - The triggered asyncCallback when (getValidCommands).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    getValidCommands(callback: AsyncCallback<Array<AVCastControlCommandType>>): void;

    /**
     * Get commands supported by the current cast controller
     * @returns { Promise<Array<AVCastControlCommandType>> } array of AVCastControlCommandType promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    getValidCommands(): Promise<Array<AVCastControlCommandType>>;

    /**
     * Process the response corresponding to the media key request obtained by the application.
     * @param { string } assetId - The assetId of resource which provides the response.
     * @param { Uint8Array } response - Response corresponding to the request.
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    processMediaKeyResponse(assetId: string, response: Uint8Array): Promise<void>;

    /**
     * Destroy the controller
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    release(callback: AsyncCallback<void>): void;

    /**
     * Destroy the controller
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    /**
     * Destroy the controller
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    release(): Promise<void>;

    /**
     * Register playback state changed callback
     * @param { 'playbackStateChange' } type
     * @param { Array<keyof AVPlaybackState> | 'all' } filter - The properties of {@link AVPlaybackState} that you cared about
     * @param { function } callback - The callback used to handle playback state changed event.
     * The callback function provides the {@link AVPlaybackState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Register playback state changed callback
     * @param { 'playbackStateChange' } type
     * @param { Array<keyof AVPlaybackState> | 'all' } filter - The properties of {@link AVPlaybackState} that you cared about
     * @param { function } callback - The callback used to handle playback state changed event.
     * The callback function provides the {@link AVPlaybackState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'playbackStateChange', filter: Array<keyof AVPlaybackState> | 'all', callback: (state: AVPlaybackState) => void): void;

    /**
     * Unregister playback state changed callback
     * @param { 'playbackStateChange' } type
     * @param { function } callback - The callback used to handle playback state changed event.
     * The callback function provides the {@link AVPlaybackState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Unregister playback state changed callback
     * @param { 'playbackStateChange' } type
     * @param { function } callback - The callback used to handle playback state changed event.
     * The callback function provides the {@link AVPlaybackState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'playbackStateChange', callback?: (state: AVPlaybackState) => void): void;

    /**
     * Register listener for current media item playback events.
     * @param { 'mediaItemChange' } type Type of the playback event to listen for.
     * @param { Callback<AVQueueItem> } callback Callback used to listen for current item changed.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Register listener for current media item playback events.
     * @param { 'mediaItemChange' } type Type of the playback event to listen for.
     * @param { Callback<AVQueueItem> } callback Callback used to listen for current item changed.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'mediaItemChange', callback: Callback<AVQueueItem>): void;

    /**
     * Unregister listener for current media item playback events.
     * @param { 'mediaItemChange' } type Type of the playback event to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Unregister listener for current media item playback events.
     * @param { 'mediaItemChange' } type Type of the playback event to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'mediaItemChange'): void;

    /**
     * Register playback command callback sent by remote side or media center.
     * Application needs update the new media resource when receive these commands by using playItem.
     * @param { 'playNext' } type - Type of the 'playNext' event to listen for.
     * @param { Callback<void> } callback - Used to handle 'playNext' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Register playback command callback sent by remote side or media center.
     * Application needs update the new media resource when receive these commands by using playItem.
     * @param { 'playNext' } type - Type of the 'playNext' event to listen for.
     * @param { Callback<void> } callback - Used to handle 'playNext' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'playNext', callback: Callback<void>): void;

    /**
     * Unregister playback command callback sent by remote side or media center.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'playNext' } type - Type of the 'playNext' event to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Unregister playback command callback sent by remote side or media center.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'playNext' } type - Type of the 'playNext' event to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'playNext'): void;

    /**
     * Register playback command callback sent by remote side or media center.
     * Application needs update the new media resource when receive these commands by using playItem.
     * @param { 'playPrevious' } type - Type of the 'playPrevious' to listen for.
     * @param { Callback<void> } callback - Used to handle 'playPrevious' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Register playback command callback sent by remote side or media center.
     * Application needs update the new media resource when receive these commands by using playItem.
     * @param { 'playPrevious' } type - Type of the 'playPrevious' to listen for.
     * @param { Callback<void> } callback - Used to handle 'playPrevious' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'playPrevious', callback: Callback<void>): void;

    /**
     * Unregister playback command callback sent by remote side or media center.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'playPrevious' } type - Type of the 'playPrevious' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Unregister playback command callback sent by remote side or media center.
     * When canceling the callback, need to update the supported commands list.
     * @param { 'playPrevious' } type - Type of the 'playPrevious' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'playPrevious'): void;

    /**
     * Register requested playback command callback sent by remote side or media center.
     * The AVQueueItem may include the requested assetId, starting position and other configurations.
     * @param { 'requestPlay' } type - Type of the 'requestPlay' to listen for.
     * @param { Callback<AVQueueItem> } callback - Used to handle 'requestPlay' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    on(type: 'requestPlay', callback: Callback<AVQueueItem>): void;

    /**
     * Unregister requested playback command callback sent by remote side or media center.
     * @param { 'requestPlay' } type - Type of the 'requestPlay' to listen for.
     * @param { Callback<AVQueueItem> } callback - Used to handle 'requestPlay' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    off(type: 'requestPlay', callback?: Callback<AVQueueItem>): void;

    /**
     * Register endOfStream state callback.
     * Application needs update the new media resource when receive these commands by using playItem.
     * @param { 'endOfStream' } type - Type of the 'endOfStream' to listen for.
     * @param { Callback<void> } callback - Used to handle 'endOfStream' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    on(type: 'endOfStream', callback: Callback<void>): void;

    /**
     * Unregister endOfStream state callback.
     * @param { 'endOfStream' } type - Type of the 'endOfStream' to listen for.
     * @param { Callback<void> } callback - Used to handle 'endOfStream' command
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    off(type: 'endOfStream', callback?: Callback<void>): void;

    /**
     * Register listens for playback events.
     * @param { 'seekDone' } type - Type of the 'seekDone' to listen for.
     * @param { Callback<number> } callback - Callback used to listen for the playback seekDone event.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Register listens for playback events.
     * @param { 'seekDone' } type - Type of the 'seekDone' to listen for.
     * @param { Callback<number> } callback - Callback used to listen for the playback seekDone event.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'seekDone', callback: Callback<number>): void;

    /**
     * Unregister listens for playback events.
     * @param { 'seekDone' } type - Type of the 'seekDone' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Unregister listens for playback events.
     * @param { 'seekDone' } type - Type of the 'seekDone' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'seekDone'): void;

    /**
     * Register the valid commands of the casted session changed callback
     * @param { 'validCommandChange' } type - 'validCommandChange'
     * @param { Callback<Array<AVCastControlCommandType>> } callback - The callback used to handle the changes.
     * The callback function provides an array of AVCastControlCommandType.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    on(type: 'validCommandChange', callback: Callback<Array<AVCastControlCommandType>>);

    /**
     * Unregister the valid commands of the casted session changed callback
     * @param { 'validCommandChange' } type - 'validCommandChange'
     * @param { Callback<Array<AVCastControlCommandType>> } callback - The callback used to handle the changes.
     * The callback function provides an array of AVCastControlCommandType.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    off(type: 'validCommandChange', callback?: Callback<Array<AVCastControlCommandType>>);

    /**
     * Register listener for video size change event, used at remote side.
     * @param { 'videoSizeChange' } type - Type of the 'videoSizeChange' to listen for.
     * @param { function } callback - Callback used to return video size.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    on(type: 'videoSizeChange', callback: (width: number, height: number) => void): void;

    /**
     * Unregister listener for video size change event, used at remote side.
     * @param { 'videoSizeChange' } type - Type of the 'videoSizeChange' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    off(type: 'videoSizeChange'): void;

    /**
     * Register listeners for playback error events.
     * @param { 'error' } type Type of the 'error' to listen for.
     * @param { ErrorCallback } callback Callback used to listen for the playback error event.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 5400101 - No memory.
     * @throws { BusinessError } 5400102 - Operation not allowed.
     * @throws { BusinessError } 5400103 - I/O error.
     * @throws { BusinessError } 5400104 - Time out.
     * @throws { BusinessError } 5400105 - Service died.
     * @throws { BusinessError } 5400106 - Unsupport format.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Register listeners for playback error events.
     * @param { 'error' } type Type of the 'error' to listen for.
     * @param { ErrorCallback } callback Callback used to listen for the playback error event.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 5400101 - No memory.
     * @throws { BusinessError } 5400102 - Operation not allowed.
     * @throws { BusinessError } 5400103 - I/O error.
     * @throws { BusinessError } 5400104 - Time out.
     * @throws { BusinessError } 5400105 - Service died.
     * @throws { BusinessError } 5400106 - Unsupport format.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'error', callback: ErrorCallback): void;

    /**
     * Unregister listens for playback error events.
     * @param { 'error' } type Type of the 'error' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 5400101 - No memory.
     * @throws { BusinessError } 5400102 - Operation not allowed.
     * @throws { BusinessError } 5400103 - I/O error.
     * @throws { BusinessError } 5400104 - Time out.
     * @throws { BusinessError } 5400105 - Service died.
     * @throws { BusinessError } 5400106 - Unsupport format.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * Unregister listens for playback error events.
     * @param { 'error' } type Type of the 'error' to listen for.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 5400101 - No memory.
     * @throws { BusinessError } 5400102 - Operation not allowed.
     * @throws { BusinessError } 5400103 - I/O error.
     * @throws { BusinessError } 5400104 - Time out.
     * @throws { BusinessError } 5400105 - Service died.
     * @throws { BusinessError } 5400106 - Unsupport format.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'error'): void;

    /**
     * Register listener for drm key request.
     * @param { 'keyRequest' } type - Type of the 'keyRequest' to listen for.
     * @param { KeyRequestCallback } callback - Callback used to request drm key.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    on(type: 'keyRequest', callback: KeyRequestCallback): void;

    /**
     * Unregister listener for drm key request.
     * @param { 'keyRequest' } type - Type of the 'keyRequest' to listen for.
     * @param { KeyRequestCallback } callback - Callback used to request drm key.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    off(type: 'keyRequest', callback?: KeyRequestCallback): void;
  }

  /**
   * The callback of key request.
   *
   * @typedef { Function } KeyRequestCallback
   * @param { string } assetId - request key for current assetId
   * @param { Uint8Array } requestData - media key request data sent to media key server
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @atomicservice
   * @since 12
   */
  type KeyRequestCallback = (assetId: string, requestData: Uint8Array) => void;

  /**
   * Enumerates the cast display states.
   *
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
   * @since 12
   */
  enum CastDisplayState {
    /**
     * Screen off.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    STATE_OFF = 1,

    /**
     * Screen on.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    STATE_ON,
  }

  /**
   * Define the information for extended display screen.
   * @typedef CastDisplayInfo
   * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
   * @since 12
   */
  interface CastDisplayInfo {
    /**
     * Display ID.
     * The application can get more display information based on the same id from display interface.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    id: number;

    /**
     * Display name.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    name: string;

    /**
     * The state of display.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    state: CastDisplayState;

    /**
     * Display width, in pixels.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    width: number;

    /**
     * Display height, in pixels.
     *
     * @syscap SystemCapability.Multimedia.AVSession.ExtendedDisplayCast
     * @since 12
     */
    height: number;
  }

  /**
   * Define the device connection state.
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Define the device connection state.
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  enum ConnectionState {
    /**
     * A connection state indicating the device is in the process of connecting.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * A connection state indicating the device is in the process of connecting.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    STATE_CONNECTING = 0,

    /**
     * A connection state indicating the device is connected.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * A connection state indicating the device is connected.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    STATE_CONNECTED = 1,

    /**
     * The default connection state indicating the device is disconnected.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The default connection state indicating the device is disconnected.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    STATE_DISCONNECTED = 6,
  }

  /**
   * The pre-defined display tag by system.
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  enum DisplayTag {
    /**
     * Indicate the AUDIO VIVID property of current media resource.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    TAG_AUDIO_VIVID = 1,
  }

  /**
   * The play list information definition.
   * @interface AVQueueInfo
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @systemapi
   * @since 11
   */
  interface AVQueueInfo {
    /**
     * The bundle name of application which current play list belongs to.
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @systemapi
     * @since 11
     */
    bundleName: string;

    /**
     * The name of play list
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @systemapi
     * @since 11
     */
    avQueueName: string;

    /**
     * The id of play list
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @systemapi
     * @since 11
     */
    avQueueId: string;

    /**
     * The artwork of play list, can be a {@link PixelMap} or a URI formatted string,
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @systemapi
     * @since 11
     */
    avQueueImage: image.PixelMap | string;

    /**
     * The time when the user last played the playlist.
     * The time format can be system, such as 1611081385000, it means 2021-01-20 02:36:25.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @systemapi
     * @since 11
     */
    lastPlayedTime?: number;
  }

  /**
   * The metadata of the current media.Used to set the properties of the current media file
   * @interface AVMetadata
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * The metadata of the current media.Used to set the properties of the current media file
   * @interface AVMetadata
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface AVMetadata {
    /**
     * Unique ID used to represent this media.
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Unique ID used to represent this media.
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    assetId: string;

    /**
     * The title of this media, for display in media center.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The title of this media, for display in media center.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    title?: string;

    /**
     * The artist of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The artist of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    artist?: string;

    /**
     * The author of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The author of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    author?: string;

    /**
     * The name of play list which current media belongs to
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 12
     */
    avQueueName?: string;

    /**
     * The id of play list which current media belongs to, it should be an unique identifier in the application.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    avQueueId?: string;

    /**
     * The artwork of play list as a {@link PixelMap} or an uri formatted String,
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    avQueueImage?: image.PixelMap | string;

    /**
     * The album of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The album of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    album?: string;

    /**
     * The writer of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The writer of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    writer?: string;

    /**
     * The composer of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    composer?: string;

    /**
     * The duration of this media, used to automatically calculate playback position
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The duration of this media, used to automatically calculate playback position
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    duration?: number;

    /**
     * The image of the media as a {@link PixelMap} or an uri formatted String,
     * used to display in media center.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The image of the media as a {@link PixelMap} or an uri formatted String,
     * used to display in media center.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    mediaImage?: image.PixelMap | string;

    /**
     * The publishDate of the media
     * @type { ?Date }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    publishDate?: Date;

    /**
     * The subtitle of the media, used for display
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The subtitle of the media, used for display
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    subtitle?: string;

    /**
     * The discription of the media, used for display
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The discription of the media, used for display
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    description?: string;

    /**
     * The lyric of the media, it should be in standard lyric format
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    lyric?: string;

    /**
     * The previous playable media id.
     * Used to tell the controller if there is a previous playable media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The previous playable media id.
     * Used to tell the controller if there is a previous playable media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    previousAssetId?: string;

    /**
     * The next playable media id.
     * Used to tell the controller if there is a next playable media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The next playable media id.
     * Used to tell the controller if there is a next playable media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    nextAssetId?: string;

    /**
     * The protocols supported by this session, if not set, the default is {@link TYPE_CAST_PLUS_STREAM}.
     * See {@link ProtocolType}
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * The protocols supported by this session, if not set, the default is {@link TYPE_CAST_PLUS_STREAM}.
     * See {@link ProtocolType}
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    filter?: number;

    /**
     * The drm schemes supported by this session which are represented by uuid.
     * @type { ?Array<string> }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 12
     */
    drmSchemes?: Array<string>;

    /**
     * The supported skipIntervals when doing fast forward and rewind operation, the default is {@link SECONDS_15}.
     * See {@link SkipIntervals}
     * @type { ?SkipIntervals }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    skipIntervals?: SkipIntervals;

    /**
     * The display tags supported by application to be displayed on media center
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    displayTags?: number;
  }

  /**
   * The description of the media for an item in the playlist of the session
   * @interface AVMediaDescription
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * The description of the media for an item in the playlist of the session
   * @interface AVMediaDescription
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface AVMediaDescription {
    /**
     * Unique ID used to represent this media.
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Unique ID used to represent this media.
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    assetId: string;
    /**
     * The title of this media, for display in media center.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The title of this media, for display in media center.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    title?: string;

    /**
     * The subtitle of the media, used for display
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The subtitle of the media, used for display
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    subtitle?: string;

    /**
     * The description of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The description of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    description?: string;

    /**
     * The image of this media asset displayed in the media center.
     * It can be a {@link PixelMap} or a URI formatted string,
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The image of this media asset displayed in the media center.
     * It can be a {@link PixelMap} or a URI formatted string,
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    mediaImage?: image.PixelMap | string;
    /**
     * Any additional attributes that can be represented as key-value pairs
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    extras?: {[key: string]: Object};

    /**
     * The type of this media, such as video, audio and so on.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The type of this media, such as video, audio and so on.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    mediaType?: string;

    /**
     * The size of this media.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The size of this media.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    mediaSize?: number;

    /**
     * The album title of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The album title of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    albumTitle?: string;

    /**
     * The album cover uri of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The album cover uri of this media
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    albumCoverUri?: string;

    /**
     * The lyric content of the media, it should be in standard lyric format
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The lyric content of the media, it should be in standard lyric format
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    lyricContent?: string;

    /**
     * The lyric uri of the media.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The lyric uri of the media.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    lyricUri?: string;

    /**
     * The artist of this media.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The artist of this media.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    artist?: string;

    /**
     * The uri of the media, used to locate the media in some special cases
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The uri of the media, used to locate the media in some special cases
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    mediaUri?: string;

    /**
     * Media file descriptor.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Media file descriptor.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    fdSrc?: media.AVFileDescriptor;

    /**
     * DataSource descriptor. The caller ensures the fileSize and callback are valid.
     * @type { ?media.AVDataSrcDescriptor }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 12
     */
    dataSrc?: media.AVDataSrcDescriptor;

    /**
     * The drm scheme supported by this resource which is represented by uuid.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 12
     */
    drmScheme?: string;

    /**
     * The duration of this media
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The duration of this media
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    duration?: number;

    /**
     * Media start position, described by milliseconds.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Media start position, described by milliseconds.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    startPosition?: number;

    /**
     * Media credits position, described by milliseconds.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Media credits position, described by milliseconds.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    creditsPosition?: number;

    /**
     * Application name.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Application name.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    appName?: string;

    /**
     * The display tags supported by application to be displayed on media center
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * The display tags supported by application to be displayed on media center
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    displayTags?: number;
  }

  /**
   * The item in the playlist of the session
   * @interface AVQueueItem
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * The item in the playlist of the session
   * @interface AVQueueItem
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface AVQueueItem {
    /**
     * Sequence number of the item in the playlist.
     * @type { number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Sequence number of the item in the playlist.
     * @type { number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    itemId: number;

    /**
     * The media description of the item in the playlist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The media description of the item in the playlist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    description?: AVMediaDescription;
  }

  /**
   * Used to indicate the playback state of the current media.
   * If the playback state of the media changes, it needs to be updated synchronously
   * @interface AVPlaybackState
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Used to indicate the playback state of the current media.
   * If the playback state of the media changes, it needs to be updated synchronously
   * @interface AVPlaybackState
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface AVPlaybackState {
    /**
     * Current playback state. See {@link PlaybackState}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current playback state. See {@link PlaybackState}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    state?: PlaybackState;

    /**
     * Current playback speed
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current playback speed
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    speed?: number;

    /**
     * Current playback position of this media. See {@link PlaybackPosition}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current playback position of this media. See {@link PlaybackPosition}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    position?: PlaybackPosition;

    /**
     * The current buffered time, the maximum playable position
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The current buffered time, the maximum playable position
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    bufferedTime?: number;

    /**
     * Current playback loop mode. See {@link LoopMode}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current playback loop mode. See {@link LoopMode}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    loopMode?: LoopMode;

    /**
     * Current Favorite Status
     * @type { ?boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current Favorite Status
     * @type { ?boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    isFavorite?: boolean;

    /**
     * Current active item id
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current active item id
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    activeItemId?: number;

    /**
     * Current player volume
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current player volume
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    volume?: number;

    /**
     * maximum  volume
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * maximum  volume
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    maxVolume?: number;

    /**
     * Current muted status
     * @type { ?boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * Current muted status
     * @type { ?boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    muted?: boolean;

    /**
     * The duration of this media asset.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    duration?: number;

    /**
     * The video width of this media asset.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * The video width of this media asset.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    videoWidth?: number;

    /**
     * The video height of this media asset.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * The video height of this media asset.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    videoHeight?: number;

    /**
     * Current custom media packets
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Current custom media packets
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    extras?: {[key: string]: Object};
  }

  /**
   * Playback position definition
   * @interface PlaybackPosition
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Playback position definition
   * @interface PlaybackPosition
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface PlaybackPosition {
    /**
     * Elapsed time(position) of this media set by the app.
     * @type { number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Elapsed time(position) of this media set by the app.
     * @type { number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    elapsedTime: number;

    /**
     * Record the system time when elapsedTime is set.
     * @type { number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Record the system time when elapsedTime is set.
     * @type { number }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    updateTime: number;
  }

  /**
   * The metadata of the current call.
   * @interface CallMetadata
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  interface CallMetadata {
    /**
     * The displayed user name of current call.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    name?: string;

    /**
     * The phone number of current call.
     * @type { ?string }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    phoneNumber?: string;

    /**
     * The displayed picture that represents a particular user.
     * @type { ?image.PixelMap }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    avatar?: image.PixelMap;
  }

  /**
   * Used to indicate the call state of the current call.
   * @interface AVCallState
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  interface AVCallState {
    /**
     * Current call state. See {@link CallState}
     * @type {CallState}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    state: CallState;

    /**
     * Current muted status.
     * @type { boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    muted: boolean;
  }

  /**
   * Enumeration of current call state
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  enum CallState {
    /**
     * Idle state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_IDLE = 0,

    /**
     * Incoming state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_INCOMING = 1,

    /**
     * Active state in calling.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_ACTIVE = 2,

    /**
     * Dialing state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_DIALING = 3,

    /**
     * Waiting state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_WAITING = 4,

    /**
     * Holding state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_HOLDING = 5,

    /**
     * Disconnecting state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    CALL_STATE_DISCONNECTING = 6,
  }

  /**
   * cast category indicating different playback scenes
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @since 10
   */
  /**
   * cast category indicating different playback scenes
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.AVCast
   * @atomicservice
   * @since 12
   */
  enum AVCastCategory {
    /**
     * The default cast type "local", media can be routed on the same device,
     * including internal speakers or audio jack on the device itself, A2DP devices.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * The default cast type "local", media can be routed on the same device,
     * including internal speakers or audio jack on the device itself, A2DP devices.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    CATEGORY_LOCAL = 0,

    /**
     * The remote category indicating the media is presenting on a remote device,
     * the application needs to get an AVCastController to control remote playback.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * The remote category indicating the media is presenting on a remote device,
     * the application needs to get an AVCastController to control remote playback.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    CATEGORY_REMOTE = 1,
  }
  /**
   * Device type definition
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Device type definition
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  enum DeviceType {
    /**
     * A device type indicating the route is on internal speakers or audio jack on the device itself.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * A device type indicating the route is on internal speakers or audio jack on the device itself.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    DEVICE_TYPE_LOCAL = 0,

    /**
     * A device type indicating the route is on a TV.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * A device type indicating the route is on a TV.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    DEVICE_TYPE_TV = 2,

    /**
     * A device type indicating the route is on a smart speaker.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 10
     */
    /**
     * A device type indicating the route is on a smart speaker.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    DEVICE_TYPE_SMART_SPEAKER = 3,

    /**
     * A device type indicating the route is on a bluetooth device.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * A device type indicating the route is on a bluetooth device.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    DEVICE_TYPE_BLUETOOTH = 10,
  }

  /**
   * Device Information Definition
   * @interface DeviceInfo
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Device Information Definition
   * @interface DeviceInfo
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface DeviceInfo {
    /**
     * The playback type supported by the device. See {@link AVCastCategory}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The playback type supported by the device. See {@link AVCastCategory}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    castCategory: AVCastCategory;
    /**
     * Audio device id.The length of the audioDeviceId array is greater than 1
     * if output to multiple devices at the same time.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Audio device id.The length of the audioDeviceId array is greater than 1
     * if output to multiple devices at the same time.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    deviceId: string;

    /**
     * Device name. The length of the deviceName array is greater than 1
     * if output to multiple devices at the same time.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Device name. The length of the deviceName array is greater than 1
     * if output to multiple devices at the same time.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    deviceName: string;

    /**
     * device type.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * device type.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    deviceType: DeviceType;

    /**
     * device ip address if available.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    ipAddress?: string;

    /**
     * device provider which supplies the route capability.
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 10
     */
    providerId?: number;

    /**
     * The protocols supported by current device, can be union of {@link ProtocolType}.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @since 11
     */
    /**
     * The protocols supported by current device, can be union of {@link ProtocolType}.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    supportedProtocols?: number;

    /**
     * The drm capability supported by current device, each drm is represented by uuid.
     * @type { ?Array<string> }
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @atomicservice
     * @since 12
     */
    supportedDrmCapabilities?: Array<string>;

    /**
     * Define different authentication status.
     * 0: Device not authenticated.
     * 1: Device already authenticated.
     * @type { ?number }
     * @syscap SystemCapability.Multimedia.AVSession.AVCast
     * @systemapi
     * @since 11
     */
    authenticationStatus?: number;
  }

  /**
   * Target Device Information Definition
   * @interface OutputDeviceInfo
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Target Device Information Definition
   * @interface OutputDeviceInfo
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  interface OutputDeviceInfo {
    /**
     * Arrays of device information
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Arrays of device information
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    devices: Array<DeviceInfo>;
  }

  /**
   * Loop Play Mode Definition
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Loop Play Mode Definition
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  enum LoopMode {
    /**
     * The default mode is sequential playback
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The default mode is sequential playback
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    LOOP_MODE_SEQUENCE = 0,

    /**
     * Single loop mode
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Single loop mode
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    LOOP_MODE_SINGLE = 1,

    /**
     * List loop mode
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * List loop mode
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    LOOP_MODE_LIST = 2,

    /**
     * Shuffle playback mode
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Shuffle playback mode
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    LOOP_MODE_SHUFFLE = 3,

    /**
     * Custom playback mode supported by application
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * Custom playback mode supported by application
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    LOOP_MODE_CUSTOM = 4,
  }

  /**
   * Supported skip intervals definition
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  enum SkipIntervals {
    /**
     * 10 seconds
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    SECONDS_10 = 10,
    /**
     * 15 seconds
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    SECONDS_15 = 15,
    /**
     * 30 seconds
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    SECONDS_30 = 30,
  }

  /**
   * Definition of current playback state
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Definition of current playback state
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  enum PlaybackState {
    /**
     * Initial state. The initial state of media file
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Initial state. The initial state of media file
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_INITIAL = 0,

    /**
     * Preparing state. Indicates that the media file is not ready to play,
     * the media is loading or buffering
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Preparing state. Indicates that the media file is not ready to play,
     * the media is loading or buffering
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_PREPARE = 1,

    /**
     * Playing state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Playing state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_PLAY = 2,

    /**
     * Paused state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Paused state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_PAUSE = 3,

    /**
     * Fast forwarding state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Fast forwarding state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_FAST_FORWARD = 4,

    /**
     * Rewinding state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Rewinding state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_REWIND = 5,

    /**
     * Stopped state.The server will clear the media playback position and other information.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Stopped state.The server will clear the media playback position and other information.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_STOP = 6,

    /**
     * Completed state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Completed state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_COMPLETED = 7,

    /**
     * Released state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Released state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_RELEASED = 8,

    /**
     * error state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * error state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_ERROR = 9,

    /**
     * Idle state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * Idle state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_IDLE = 10,

    /**
     * Buffering state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    /**
     * Buffering state.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    PLAYBACK_STATE_BUFFERING = 11,
  }

  /**
   * The description of the session
   * @interface AVSessionDescriptor
   * @syscap SystemCapability.Multimedia.AVSession.Manager
   * @systemapi
   * @since 9
   */
  interface AVSessionDescriptor {
    /**
     * Unique ID of the session
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    sessionId: string;

    /**
     * Session type, currently supports audio or video
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    type: AVSessionType;

    /**
     * The session tag set by the application
     * @type { string }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    sessionTag: string;

    /**
     * The elementName of the ability that created this session. See {@link ElementName} in bundle/elementName.d.ts
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    elementName: ElementName;

    /**
     * Session active state
     * @type { boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    isActive: boolean;

    /**
     * Is it the top priority session
     * @type { boolean }
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    isTopSession: boolean;

    /**
     * The current output device information.
     * It will be undefined if this is a local session.
     * @syscap SystemCapability.Multimedia.AVSession.Manager
     * @systemapi
     * @since 9
     */
    outputDevice: OutputDeviceInfo;
  }

  /**
   * Session controller,used to control media playback and get media information
   * @interface AVSessionController
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  interface AVSessionController {
    /**
     * Unique session Id
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    readonly sessionId: string;

    /**
     * Get the playback status of the current session
     * @param { AsyncCallback<AVPlaybackState> } callback - The triggered asyncCallback when (getAVPlaybackState).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVPlaybackState(callback: AsyncCallback<AVPlaybackState>): void;

    /**
     * Get the playback status of the current session
     * @returns { Promise<AVPlaybackState> } (AVPlaybackState) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVPlaybackState(): Promise<AVPlaybackState>;

    /**
     * Get the playback status of the current session
     * @returns { AVPlaybackState } (AVPlaybackState) returned
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVPlaybackStateSync(): AVPlaybackState;

    /**
     * Get the metadata of the current session
     * @param { AsyncCallback<AVMetadata> } callback - The triggered asyncCallback when (getAVMetadata).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVMetadata(callback: AsyncCallback<AVMetadata>): void;

    /**
     * Get the metadata of the current session
     * @returns { Promise<AVMetadata> } (AVMetadata) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVMetadata(): Promise<AVMetadata>;

    /**
     * Get the metadata of the current session
     * @returns { AVMetadata } (AVMetadata) returned
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVMetadataSync(): AVMetadata;

    /**
     * Get the call status of the current session
     * @param { AsyncCallback<AVCallState> } callback - The triggered asyncCallback when (getAVCallState).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    getAVCallState(callback: AsyncCallback<AVCallState>): void;

    /**
     * Get the call status of the current session
     * @returns { Promise<AVCallState> } (AVCallState) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    getAVCallState(): Promise<AVCallState>;

    /**
     * Get the call metadata of the current session
     * @param { AsyncCallback<CallMetadata> } callback - The triggered asyncCallback when (getCallMetadata).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    getCallMetadata(callback: AsyncCallback<CallMetadata>): void;

    /**
     * Get the call metadata of the current session
     * @returns { Promise<CallMetadata> } (CallMetadata) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    getCallMetadata(): Promise<CallMetadata>;

    /**
     * Get the name of the playlist of the current session
     * @param { AsyncCallback<string> } callback - The triggered asyncCallback when (getAVQueueTitle).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVQueueTitle(callback: AsyncCallback<string>): void;

    /**
     * Get the name of the playlist of the current session
     * @returns { Promise<string> } (string) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVQueueTitle(): Promise<string>;

    /**
     * Get the name of the playlist of the current session
     * @returns { string } (string) returned
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVQueueTitleSync(): string;

    /**
     * Get the playlist of the current session
     * @param { AsyncCallback<Array<AVQueueItem>> } callback - The triggered asyncCallback when (getAVQueueItems).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVQueueItems(callback: AsyncCallback<Array<AVQueueItem>>): void;

    /**
     * Get the playlist of the current session
     * @returns { Promise<Array<AVQueueItem>> } (Array<AVQueueItem>) returned through promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVQueueItems(): Promise<Array<AVQueueItem>>;

    /**
     * Get the playlist of the current session
     * @returns { Array<AVQueueItem> } (Array<AVQueueItem>) returned
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getAVQueueItemsSync(): Array<AVQueueItem>;

    /**
     * Set the item in the playlist to be played
     * @param { number } itemId - The serial number of the item to be played
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    skipToQueueItem(itemId: number, callback: AsyncCallback<void>): void;

    /**
     * Set the item in the playlist to be played
     * @param { number } itemId - The serial number of the item to be played
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    skipToQueueItem(itemId: number): Promise<void>;

    /**
     * Get output device information
     * @param { AsyncCallback<OutputDeviceInfo> } callback - The triggered asyncCallback when (getOutputDevice).
     * @throws { BusinessError } 600101 - Session service exception.
     * @throws { BusinessError } 600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getOutputDevice(callback: AsyncCallback<OutputDeviceInfo>): void;

    /**
     * Get output device information
     * @returns { Promise<OutputDeviceInfo> } (OutputDeviceInfo) returned through promise
     * @throws { BusinessError } 600101 - Session service exception.
     * @throws { BusinessError } 600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getOutputDevice(): Promise<OutputDeviceInfo>;

    /**
     * Get output device information
     * @returns { OutputDeviceInfo } (OutputDeviceInfo) returned
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getOutputDeviceSync(): OutputDeviceInfo;

    /**
     * Send media key event to this session
     * @param { KeyEvent } event - The KeyEvent
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 600101 - Session service exception.
     * @throws { BusinessError } 600102 - The session does not exist.
     * @throws { BusinessError } 600103 - The session controller does not exist.
     * @throws { BusinessError } 600105 - Invalid session command.
     * @throws { BusinessError } 600106 - The session is not activated.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    sendAVKeyEvent(event: KeyEvent, callback: AsyncCallback<void>): void;

    /**
     * Send media key event to this session
     * @param { KeyEvent } event - The KeyEvent
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 600101 - Session service exception.
     * @throws { BusinessError } 600102 - The session does not exist.
     * @throws { BusinessError } 600103 - The session controller does not exist.
     * @throws { BusinessError } 600105 - Invalid session command.
     * @throws { BusinessError } 600106 - The session is not activated.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    sendAVKeyEvent(event: KeyEvent): Promise<void>;

    /**
     * Get the {@link WantAgent} of this session that can launch the session ability
     * @param { AsyncCallback<WantAgent> } callback - The asyncCallback triggered when getting the WantAgent.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getLaunchAbility(callback: AsyncCallback<WantAgent>): void;

    /**
     * Get the {@link WantAgent} of this session that can launch the session ability
     * @returns { Promise<WantAgent> } WantAgent promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getLaunchAbility(): Promise<WantAgent>;

    /**
     * Get the adjusted playback position. The time automatically calculated by the system
     * taking into account factors such as playback status, playback speed, and application update time.
     * @returns { number } current playback position in ms.Note that the returns value of each call will be different.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getRealPlaybackPositionSync(): number;

    /**
     * Check if the current session is active
     * @param { AsyncCallback<boolean> } callback - The triggered asyncCallback when (isActive).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    isActive(callback: AsyncCallback<boolean>): void;

    /**
     * Check if the current session is active
     * @returns { Promise<boolean> } boolean promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    isActive(): Promise<boolean>;

    /**
     * Check if the current session is active
     * @returns { boolean } boolean
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    isActiveSync(): boolean;

    /**
     * Destroy the server controller
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    destroy(callback: AsyncCallback<void>): void;

    /**
     * Destroy the server controller
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    destroy(): Promise<void>;

    /**
     * Get commands supported by the current session
     * @param { AsyncCallback<Array<AVControlCommandType>> } callback - The triggered asyncCallback when (getValidCommands).
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getValidCommands(callback: AsyncCallback<Array<AVControlCommandType>>): void;

    /**
     * Get commands supported by the current session
     * @returns { Promise<Array<AVControlCommandType>> } array of AVControlCommandType promise
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getValidCommands(): Promise<Array<AVControlCommandType>>;

    /**
     * Get commands supported by the current session
     * @returns {Array<AVControlCommandType> } array of AVControlCommandType
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getValidCommandsSync(): Array<AVControlCommandType>;

    /**
     * Send control commands to this session
     * @param { AVControlCommand } command - The command to be sent. See {@link AVControlCommand}
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @throws { BusinessError } 6600105 - Invalid session command.
     * @throws { BusinessError } 6600106 - The session is not activated.
     * @throws { BusinessError } 6600107 - Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    sendControlCommand(command: AVControlCommand, callback: AsyncCallback<void>): void;

    /**
     * Send control commands to this session
     * @param { AVControlCommand } command - The command to be sent. See {@link AVControlCommand}
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @throws { BusinessError } 6600105 - Invalid session command.
     * @throws { BusinessError } 6600106 - The session is not activated.
     * @throws { BusinessError } 6600107 - Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    sendControlCommand(command: AVControlCommand): Promise<void>;

    /**
     * Send common commands to this session
     * @param { string } command - The command name to be sent.
     * @param { object } args - The parameters of session event
     * @param { AsyncCallback<void> } callback - The asyncCallback triggered when the command is executed successfully.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @throws { BusinessError } 6600105 - Invalid session command.
     * @throws { BusinessError } 6600106 - The session is not activated.
     * @throws { BusinessError } 6600107 - Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    sendCommonCommand(command: string, args: {[key: string]: Object}, callback: AsyncCallback<void>): void;

    /**
     * Send common commands to this session
     * @param { string } command - The command name to be sent.
     * @param { object } args - The parameters of session event
     * @returns { Promise<void> } void promise when executed successfully
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @throws { BusinessError } 6600105 - Invalid session command.
     * @throws { BusinessError } 6600106 - The session is not activated.
     * @throws { BusinessError } 6600107 - Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    sendCommonCommand(command: string, args: {[key: string]: Object}): Promise<void>;

    /**
     * Get custom media packets provided by the corresponding session
     * @param { AsyncCallback<{[key: string]: Object}> } callback - The triggered asyncCallback when (getExtras).
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types. 3.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @throws { BusinessError } 6600105 - Invalid session command.
     * @throws { BusinessError } 6600107 - Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getExtras(callback: AsyncCallback<{[key: string]: Object}>): void;

    /**
     * Get custom media packets provided by the corresponding session
     * @returns { Promise<{[key: string]: Object}> } the parameters of extras
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types. 3.Parameter verification failed.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600102 - The session does not exist.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @throws { BusinessError } 6600105 - Invalid session command.
     * @throws { BusinessError } 6600107 - Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    getExtras(): Promise<{[key: string]: Object}>;

    /**
     * Register metadata changed callback
     * @param { 'metadataChange' } type
     * @param { Array<keyof AVMetadata> | 'all' } filter - The properties of {@link AVMetadata} that you cared about
     * @param { function } callback - The callback used to handle metadata changed event.
     * The callback function provides the {@link AVMetadata} parameter.
     * It only contains the properties set in the filter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'metadataChange', filter: Array<keyof AVMetadata> | 'all', callback: (data: AVMetadata) => void);

    /**
     * Unregister metadata changed callback
     * @param { 'metadataChange' } type
     * @param { function } callback - The callback used to handle metadata changed event.
     * The callback function provides the {@link AVMetadata} parameter.
     * It only contains the properties set in the filter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'metadataChange', callback?: (data: AVMetadata) => void);

    /**
     * Register playback state changed callback
     * @param { 'playbackStateChange' } type
     * @param { Array<keyof AVPlaybackState> | 'all' } filter - The properties of {@link AVPlaybackState} that you cared about
     * @param { function } callback - The callback used to handle playback state changed event.
     * The callback function provides the {@link AVPlaybackState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'playbackStateChange', filter: Array<keyof AVPlaybackState> | 'all', callback: (state: AVPlaybackState) => void);

    /**
     * Unregister playback state changed callback
     * @param { 'playbackStateChange' } type
     * @param { function } callback - The callback used to handle playback state changed event.
     * The callback function provides the {@link AVPlaybackState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'playbackStateChange', callback?: (state: AVPlaybackState) => void);

    /**
     * Register call metadata changed callback
     * @param { 'callMetadataChange' } type - 'callMetadataChange'
     * @param { Array<keyof CallMetadata> | 'all' } filter - The properties of {@link CallMetadata} that you cared about
     * @param { Callback<CallMetadata> } callback - The callback used to handle call metadata changed event.
     * The callback function provides the {@link CallMetadata} parameter.
     * It only contains the properties set in the filter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    on(type: 'callMetadataChange', filter: Array<keyof CallMetadata> | 'all', callback: Callback<CallMetadata>): void;

    /**
     * Unregister call metadata changed callback
     * @param { 'callMetadataChange' } type - 'callMetadataChange'
     * @param { Callback<CallMetadata> } callback - The callback used to handle call metadata changed event.
     * The callback function provides the {@link CallMetadata} parameter.
     * It only contains the properties set in the filter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    off(type: 'callMetadataChange', callback?: Callback<CallMetadata>): void;

    /**
     * Register call state changed callback
     * @param { 'callStateChange' } type - 'callStateChange'
     * @param { Array<keyof AVCallState> | 'all' } filter - The properties of {@link AVCallState} that you cared about
     * @param { Callback<AVCallState> } callback - The callback used to handle call state changed event.
     * The callback function provides the {@link AVCallState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    on(type: 'callStateChange', filter: Array<keyof AVCallState> | 'all', callback: Callback<AVCallState>): void;

    /**
     * Unregister playback state changed callback
     * @param { 'callStateChange' } type - 'callStateChange'
     * @param { Callback<AVCallState> } callback - The callback used to handle call state changed event.
     * The callback function provides the {@link AVCallState} parameter.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 11
     */
    off(type: 'callStateChange', callback?: Callback<AVCallState>): void;

    /**
     * Register current session destroyed callback
     * @param { 'sessionDestroy' } type
     * @param { function } callback - The callback used to handle current session destroyed event.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'sessionDestroy', callback: () => void);

    /**
     * Unregister current session destroyed callback
     * @param { 'sessionDestroy' } type - 'sessionDestroy'
     * @param { function } callback - The callback used to handle current session destroyed event.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'sessionDestroy', callback?: () => void);

    /**
     * Register the active state of this session changed callback
     * @param { 'activeStateChange' } type - 'activeStateChange'
     * @param { function } callback - The callback used to handle the active state of this session changed event.
     * The callback function provides the changed session state.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'activeStateChange', callback: (isActive: boolean) => void);

    /**
     * Unregister the active state of this session changed callback
     * @param { 'activeStateChange' } type - 'activeStateChange'
     * @param { function } callback - The callback used to handle the active state of this session changed event.
     * The callback function provides the changed session state.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'activeStateChange', callback?: (isActive: boolean) => void);

    /**
     * Register the valid commands of the session changed callback
     * @param { 'validCommandChange' } type - 'validCommandChange'
     * @param { function } callback - The callback used to handle the changes.
     * The callback function provides an array of AVControlCommandType.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'validCommandChange', callback: (commands: Array<AVControlCommandType>) => void);

    /**
     * Unregister the valid commands of the session changed callback
     * @param { 'validCommandChange' } type - 'validCommandChange'
     * @param { function } callback - The callback used to handle the changes.
     * The callback function provides an array of AVControlCommandType.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'validCommandChange', callback?: (commands: Array<AVControlCommandType>) => void);

    /**
     * Register session output device change callback
     * @param { 'outputDeviceChange' } type - Registration Type 'outputDeviceChange'
     * @param { function } callback - Used to handle output device changed.
     * The callback provide the new device info {@link OutputDeviceInfo} and related connection state {@link ConnectionState}.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600103 - The session controller does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'outputDeviceChange', callback: (state: ConnectionState, device: OutputDeviceInfo) => void): void;

    /**
     * Unregister session output device change callback
     * @param { 'outputDeviceChange' } type - Registration Type 'outputDeviceChange'
     * @param { function } callback - Used to handle output device changed.
     * The callback provide the new device info {@link OutputDeviceInfo} and related connection state {@link ConnectionState}.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception
     * @throws { BusinessError } 6600103 - The session controller does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'outputDeviceChange', callback?: (state: ConnectionState, device: OutputDeviceInfo) => void): void;

    /**
     * Register session event callback
     * @param { 'sessionEvent' } type - 'sessionEvent'
     * @param { function } callback - The callback used to handle session event changed event.
     * The callback function provides the event string and key-value pair parameters.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'sessionEvent', callback: (sessionEvent: string, args: {[key: string]: Object}) => void): void;

    /**
     * Unregister session event callback
     * @param { 'sessionEvent' } type - 'sessionEvent'
     * @param { function } callback - Used to cancel a specific listener
     * The callback function provides the event string and key-value pair parameters.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'sessionEvent', callback?: (sessionEvent: string, args: {[key: string]: Object}) => void): void;

    /**
     * Register session playlist change callback
     * @param { 'queueItemsChange' } type - Registration Type 'queueItemsChange'
     * @param { function } callback - Used to handle playlist changed.
     * The callback provides the new array of AVQueueItem {@link AVQueueItem}
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'queueItemsChange', callback: (items: Array<AVQueueItem>) => void): void;

    /**
     * Unregister session playlist change callback
     * @param { 'queueItemsChange' } type - Registration Type 'queueItemsChange'
     * @param { function } callback - Used to handle playlist changed.
     * The callback provides the new array of AVQueueItem {@link AVQueueItem}
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'queueItemsChange', callback?: (items: Array<AVQueueItem>) => void): void;

    /**
     * Register the name of session playlist change callback
     * @param { 'queueTitleChange' } type - Registration Type 'queueTitleChange'
     * @param { function } callback - Used to handle name of playlist changed.
     * The callback provides the new name.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'queueTitleChange', callback: (title: string) => void): void;

    /**
     * Unregister the name of session playlist change callback
     * @param { 'queueTitleChange' } type - Registration Type 'queueTitleChange'
     * @param { function } callback - Used to handle name of playlist changed.
     * The callback provides the new name.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'queueTitleChange', callback?: (title: string) => void): void;

    /**
     * Register the custom media packets change callback
     * @param { 'extrasChange' } type - Registration Type 'extrasChange'
     * @param { function } callback - Used to handle custom media packets changed.
     * The callback provides the new media packets.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    on(type: 'extrasChange', callback: (extras: {[key: string]: Object}) => void): void;

    /**
     * Unregister the custom media packets change callback
     * @param { 'extrasChange' } type - Registration Type 'extrasChange'
     * @param { function } callback - Used to handle custom media packets changed.
     * The callback provides the new media packets.
     * @throws { BusinessError } 401 - parameter check failed. 1.Mandatory parameters are left unspecified.
     * 2.Incorrect parameter types.
     * @throws { BusinessError } 6600101 - Session service exception.
     * @throws { BusinessError } 6600103 - The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    off(type: 'extrasChange', callback?: (extras: {[key: string]: Object}) => void): void;
  }

  /**
   * The type of control command
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * The type of control command, add new support 'playFromAssetId' | 'answer' | 'hangUp' | 'toggleCallMute'
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 11
   */
  type AVControlCommandType = 'play' | 'pause' | 'stop' | 'playNext' | 'playPrevious' | 'fastForward' | 'rewind' |
  'seek' | 'setSpeed' | 'setLoopMode' | 'toggleFavorite' | 'playFromAssetId' | 'answer' | 'hangUp' | 'toggleCallMute';

  /**
   * The definition of command to be sent to the session
   * @interface AVControlCommand
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  interface AVControlCommand {
    /**
     * The command value {@link AVControlCommandType}
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    command: AVControlCommandType;

    /**
     * parameter of the command. Whether this command requires parameters, see {@link AVSessionCommand}
     * seek command requires a number parameter
     * setSpeed command requires a number parameter
     * setLoopMode command requires a {@link LoopMode} parameter.
     * toggleFavorite command requires assetId {@link AVMetadata.assetId} parameter
     * other commands need no parameter
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    parameter?: LoopMode | string | number;
  }

  /**
   * Enumerates ErrorCode types, returns in BusinessError.code.
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @since 10
   */
  /**
   * Enumerates ErrorCode types, returns in BusinessError.code.
   * @enum { number }
   * @syscap SystemCapability.Multimedia.AVSession.Core
   * @atomicservice
   * @since 12
   */
  enum AVSessionErrorCode {
    /**
     * Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Session service exception.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_SERVICE_EXCEPTION = 6600101,

    /**
     * The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The session does not exist
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_SESSION_NOT_EXIST = 6600102,

    /**
     * The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The session controller does not exist.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_CONTROLLER_NOT_EXIST = 6600103,

    /**
     * The remote session connection failed.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The remote session connection failed.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_REMOTE_CONNECTION_ERR = 6600104,

    /**
     * Invalid session command.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Invalid session command.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_COMMAND_INVALID = 6600105,

    /**
     * The session is not activated.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The session is not activated.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_SESSION_INACTIVE = 6600106,

    /**
     * Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Too many commands or events.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_MESSAGE_OVERLOAD = 6600107,

    /**
     * Device connecting failed.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * Device connecting failed.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_DEVICE_CONNECTION_FAILED = 6600108,

    /**
     * The remote connection is not established.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @since 10
     */
    /**
     * The remote connection is not established.
     * @syscap SystemCapability.Multimedia.AVSession.Core
     * @atomicservice
     * @since 12
     */
    ERR_CODE_REMOTE_CONNECTION_NOT_EXIST = 6600109,
  }
}

export default avSession;