import { AgoraClient } from './data/models/agora-client.model';
import { AgoraConfig } from './data/models/agora-config.model';
import { AgoraRTC, ClientConfig, MediaDeviceInfo, Stream, StreamSpec } from './data/models';
/**
 * Provides access to the Agora web API, including the AgoraRTC and Client objects.
 */
export declare class NgxAgoraService {
    private config;
    private static AgoraRTC;
    /**
     * The local Agora.io Client object.
     * @see [Web Client](https://docs.agora.io/en/Video/API%20Reference/web/interfaces/agorartc.client.html)
     */
    client: AgoraClient;
    /**
     * All audio devices collected from the AgoraRTC `getDevices()` method.
     * @see [getDevices()](https://docs.agora.io/en/Video/API%20Reference/web/globals.html#getdevices)
     *
     */
    audioDevices: MediaDeviceInfo[];
    /**
     * All video devices collected from the AgoraRTC `getDevices()` method.
     * @see [getDevices()](https://docs.agora.io/en/Video/API%20Reference/web/globals.html#getdevices)
     */
    videoDevices: MediaDeviceInfo[];
    /**
     * Instance reference to the `static` AgoraRTC library object.
     */
    AgoraRTC: AgoraRTC;
    constructor(config: AgoraConfig);
    /**
     * Checks the Web Browser Compatibility
     *
     * This method checks the compatibility between the Web SDK and the current web browser.
     * Use this method before calling createClient to check the compatibility between the system and the web browser.
     *
     * - true: The Web SDK is compatible with the current web browser.
     * - false: The Web SDK is not compatible with the current web browser.
     *
     * @remark
     * Agora has yet to conduct comprehensive tests on Chromium kernel browsers, such as QQ and 360.
     * Agora will gradually achieve compatibility on most mainstream browsers in subsequent versions of the Web SDK.
     */
    checkSystemRequirements(): boolean;
    /**
     * Creates a Client object.
     *
     * This method creates and returns a client object. You can only call this method once each call session.
     *
     * @param config
     * Defines the property of the client, see
     * [ClientConfig](https://docs.agora.io/en/Video/API%20Reference/web/interfaces/agorartc.clientconfig.html) for details.
     * @param [autoInitializing=true] Ngx-agora by default automatically initializes the client with the provided `AppID` after it is created.
     * Set this property to `false` to disable this functionality, if you are going to call `init()` separately
     * (after creating the client only).
     * @param [onSuccess] The callback when the method succeeds.
     * @param [onFailure] The callback when the method fails.
     *
     * @example
     * AgoraRTC.createClient(config);
     */
    createClient(config: ClientConfig, autoInitializing?: boolean, onSuccess?: () => void, onFailure?: (error: Error) => void): AgoraClient;
    /**
     * This method creates and returns a stream object.
     *
     * @example
     * AgoraRTC.createStream(spec)
     *
     * @param spec Defines the properties of the stream
     * @see [StreamSpec](https://docs.agora.io/en/Video/API%20Reference/web/interfaces/agorartc.streamspec.html) for details.
     */
    createStream(spec: StreamSpec): Stream;
    /**
     * Initializes the Client object.
     *
     * @param appId Pass in the App ID for your project.
     * ASCII characters only, and the string length must be greater than 0 and less than 256 bytes.
     * To get your App ID,
     * @see [Get an App ID](https://docs.agora.io/en/Video/web_prepare?platform=Web#create-an-agora-account-and-get-an-app-id).
     * @param [onSuccess] The callback when the method succeeds.
     * @param [onFailure] The callback when the method fails.
     *
     * @example
     * this.ngxAgoraService.client.init(appId, () => {
     * console.log("client initialized");
     * // Join a channel
     * //……
     * }, error => {
     *     console.log("client init failed ", err);
     *     // Error handling
     * });
     */
    init(appId: string, onSuccess?: () => void, onFailure?: (error: Error) => void): void;
    /**
     * Attempts to automatically collect audio and video devices from the AgoraRTC `getDevices()` method.
     */
    private collectDevices;
}