import NativeEvents from '../../utils/NativeEvents';
import type { UnsubscribeFunction } from '../conference/models';
import type { VideoPresentationEventType } from './events';
import { VideoPresentationEventNames } from './events';
import type { VideoPresentation, VideoPresentationState } from './models';
/**
 * The VideoPresentationService allows sharing videos during a conference. To present a video, a conference participant needs to provide a URL that defines the video location. We recommend sharing files in the MPEG-4 Part 14 or MP4 video format.
 *
 * **The video presentation workflow:**
 *
 * **1.** The presenter calls the [start](#start) method to start a video presentation. This method automatically starts playing the shared video file.
 *
 * **2.** All participants receive [information](doc:rn-client-sdk-models-videopresentationeventtype) about the converted file via the [onVideoPresentationChange](#onvideopresentationchange) listener.
 *
 * **3.** The presenter can call the [pause](#pause) method to pause the shared video. In such a situation, all conference participants receive [information](doc:rn-client-sdk-models-videopresentationeventtype) about paused file via the [onVideoPresentationChange](#onvideopresentationchange) listener.
 *
 * **4.** The presenter can call the [play](#play) method to resume the paused video. In such a situation, all conference participants receive [information](doc:rn-client-sdk-models-videopresentationeventtype) about the resumed file via the [onVideoPresentationChange](#onvideopresentationchange) listener.
 *
 * **5.** The presenter can call the [seek](#seek) method to navigate to a specific section of the shared video. After calling the seek method, all conference participants receive [information](doc:rn-client-sdk-models-videopresentationeventtype) about the updated timestamp via the [onVideoPresentationChange](#onvideopresentationchange) listener.
 *
 * **6.** The presenter calls the [stop](#stop) method to stop the video presentation. In such a situation, all conference participants receive this information via the [onVideoPresentationStopped](#onvideopresentationstopped) listener.
 */
export declare class VideoPresentationService {
    /** @internal */
    _nativeModule: any;
    /** @internal */
    _nativeEvents: NativeEvents;
    /**
     * Returns information about the current video presentation.
     */
    current(): Promise<VideoPresentation | null>;
    /**
     * Pauses a video presentation.
     * @param timestamp The timestamp that informs when the video needs to be paused, in milliseconds.
     */
    pause(timestamp: number): Promise<void>;
    /**
     * Resumes the paused video.
     */
    play(): Promise<void>;
    /**
     * Allows a presenter to navigate to the specific section of the shared video.
     * @param timestamp The timestamp the presenter wants to start playing the video from, in milliseconds.
     */
    seek(timestamp: number): Promise<void>;
    /**
     * Starts a video presentation.
     * @param url The URL that specifies the video file location.
     */
    start(url: string): Promise<void>;
    /**
     * Provides the current state of a video presentation.
     */
    state(): Promise<VideoPresentationState>;
    /**
     * Stops a video presentation.
     */
    stop(): Promise<void>;
    /**
     * Adds a listener to the video presentation started, sought, paused, and played events.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onVideoPresentationChange(handler: (data: VideoPresentationEventType, type?: VideoPresentationEventNames.VideoPresentationStarted | VideoPresentationEventNames.VideoPresentationSought | VideoPresentationEventNames.VideoPresentationPaused | VideoPresentationEventNames.VideoPresentationPlayed) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the video presentation stopped event.
     * @param handler Event callback function
     */
    onVideoPresentationStopped(handler: () => void): UnsubscribeFunction;
}
declare const _default: VideoPresentationService;
export default _default;