import VideoTile from '../videotile/VideoTile';
import VideoTileState from '../videotile/VideoTileState';
/**
 * [[VideoTileController]] allows one to manipulate how the underlying media
 * streams are assigned to video elements. The caller is responsible for laying
 * out video elements as desired and binding tile ids received from the observer
 * in the [[videoTileUpdated]] callbacks.
 */
export default interface VideoTileController {
    /**
     * Binds the video element to the tile. This should also be called any time
     * the layout of the video element changes, for example, when changing its
     * dimensions.
     */
    bindVideoElement(tileId: number, videoElement: HTMLVideoElement): void;
    /**
     * Unbinds the video element from the tile.
     */
    unbindVideoElement(tileId: number): void;
    /**
     * Starts sharing the local video tile, creating a new video tile if one does
     * not already exist. It returns the the tile id of the video tile.
     */
    startLocalVideoTile(): number;
    /**
     * Stops a local video tile, if it exists.
     */
    stopLocalVideoTile(): void;
    /**
     * Returns whether the local video tile has been started.
     */
    hasStartedLocalVideoTile(): boolean;
    /**
     * Stops and removes a local video tile, if it exists.
     */
    removeLocalVideoTile(): void;
    /**
     * Returns the current local video tile if it exists
     */
    getLocalVideoTile(): VideoTile | null;
    /**
     * Pauses the video tile, if it exists.
     */
    pauseVideoTile(tileId: number): void;
    /**
     * Unpauses the video tile, if it exists.
     */
    unpauseVideoTile(tileId: number): void;
    /**
     * Looks up a video tile from its tile id
     */
    getVideoTile(tileId: number): VideoTile | null;
    /**
     * Gets a video tile area in physical pixels
     */
    getVideoTileArea(tile: VideoTile): number;
    /**
     * Returns the remote video tile
     */
    getAllRemoteVideoTiles(): VideoTile[];
    /**
     * Get all video tiles.
     */
    getAllVideoTiles(): VideoTile[];
    /**
     * Returns a new tile. The tile id is assigned automatically.
     */
    addVideoTile(): VideoTile;
    /**
     * Removes a tile by tile id.
     */
    removeVideoTile(tileId: number): void;
    /**
     * Removes any tiles that have the given attendee id and returns the tile ids of the
     *  tiles removed
     */
    removeVideoTilesByAttendeeId(attendeeId: string): number[];
    /**
     * Removes all the tiles.
     */
    removeAllVideoTiles(): void;
    /**
     * Broadcasts a tile state update to the session observers.
     */
    sendTileStateUpdate(tileState: VideoTileState): void;
    /**
     * Returns whether at least one video tile has a bound media stream.
     */
    haveVideoTilesWithStreams(): boolean;
    /**
     * This can be used to capture the image data for a given tile.
     */
    captureVideoTile?(tileId: number): ImageData | null;
}