import { AgoraRtcVideoCanvas } from './canvas';
import { AgoraRtcStreamLayer } from './type';
export interface AgoraRtcChannelSubscriber {
    /**
     * Subscribes to a remote video stream.
     * @param streamId The ID of the stream.
     * @param streamLayer The layer to subscribe (low/high, later calls overwrite earlier records).
     * @returns The result of the operation.
     */
    subscribeRemoteVideoStream(streamId: string, streamLayer: AgoraRtcStreamLayer): number;
    /**
     * Unsubscribes from a remote video stream.
     * @param streamId The ID of the stream.
     * @returns The result of the operation.
     */
    unsubscribeRemoteVideoStream(streamId: string): number;
    /**
     * Subscribes to a remote audio stream.
     * @param streamId The ID of the stream.
     * @returns The result of the operation.
     */
    subscribeRemoteAudioStream(streamId: string): number;
    /**
     * Unsubscribes from a remote audio stream.
     * @param streamId The ID of the stream.
     * @returns The result of the operation.
     */
    unsubscribeRemoteAudioStream(streamId: string): number;
    /**
     * Enables audio volume indication.
     * @param interval The interval in milliseconds.
     * @returns The result of the operation.
     */
    enableAudioVolumeIndication(interval: number): number;
    /**
     * Adds a video canvas to a remote stream.
     * @param streamId The ID of the stream.
     * @param canvas The canvas to add.
     * @returns The result of the operation.
     */
    addVideoCanvas(streamId: string, canvas: AgoraRtcVideoCanvas): number;
    /**
     * Removes a video canvas from a remote stream.
     * @param streamId The ID of the stream.
     * @param canvas The canvas to remove.
     * @returns The result of the operation.
     */
    removeVideoCanvas(streamId: string, canvas: AgoraRtcVideoCanvas): number;
    /**
     * Sets the volume of a remote audio stream.
     * @param streamId The ID of the stream.
     * @param volume The volume to set.
     * @returns The result of the operation.
     */
    setRemoteAudioStreamVolume(streamId: string, volume: number): number;
    /**
     * Takes a snapshot of a remote stream.
     * @param streamId The ID of the stream.
     * @returns The snapshot.
     */
    takeSnapshot(streamId: string): ImageData;
    /**
     * resubscribe all remote streams
     * @returns The result of the operation.
     */
    resume(): number;
    /**
     * pause all remote streams
     * @returns The result of the operation.
     */
    pause(): number;
    /**
     * release resources
     */
    release(): void;
}