import AudioProfile from '../audioprofile/AudioProfile';
import ContentShareObserver from '../contentshareobserver/ContentShareObserver';
import VideoCodecCapability from '../sdp/VideoCodecCapability';
import ContentShareSimulcastEncodingParameters from '../videouplinkbandwidthpolicy/ContentShareSimulcastEncodingParameters';
export default interface ContentShareControllerFacade {
    /**
     * Sets the audio profile to use for content sharing. The new audio profile takes effect
     * on the next call to `startContentShare` or `startContentShareFromScreenCapture` or if
     * already started, upon the next reconnect.
     */
    setContentAudioProfile(audioProfile: AudioProfile): void;
    /**
     * Toggle simulcast for content share. This should be called before calling `startContentShare` or
     * `startContentShareFromScreenCapture`. The default encoding parameters are:
     * - High layer: 1200 kbps max bitrate
     * - Low layer: 300 kbps max bitrate, scale down resolution by 2, and 5 fps max frame rate.
     * @param enable Enable/disable simulcast
     * @param encodingParams Overide the default encoding params for either layer in max bitrate, scale resolution
     * down by, or max frame rate.
     */
    enableSimulcastForContentShare(enable: boolean, encodingParams?: ContentShareSimulcastEncodingParameters): void;
    /**
     * Toggle SVC for content share. This should be called before calling `startContentShare` or
     * `startContentShareFromScreenCapture`. This will only have impact if using an SVC supporting
     * codec like VP9. It cannot be enabled at the same time as simulcast.
     *
     * @param enable Enable/disable SVC
     */
    enableSVCForContentShare(enable: boolean): void;
    /**
     * Start content sharing
     */
    startContentShare(stream: MediaStream): Promise<void>;
    /**
     * Start screen sharing
     */
    startContentShareFromScreenCapture(sourceId?: string, frameRate?: number): Promise<MediaStream>;
    /**
     * Pause content sharing. This (combined with `unpauseContentShare` is a lightweight alternative to stopping and
     * starting content share which requires use of a seperate peer connection and therefore has increased latency.
     *
     * Remote receivers will continue to subscribe to content share video but there will be nothing transmitting
     * (e.g. it may be a black frame)
     */
    pauseContentShare(): void;
    /**
     * Unpause content sharing
     */
    unpauseContentShare(): void;
    /**
     * Stop content sharing
     */
    stopContentShare(): void;
    /**
     * Add an observer
     */
    addContentShareObserver(observer: ContentShareObserver): void;
    /**
     * Remove an observer
     */
    removeContentShareObserver(observer: ContentShareObserver): void;
    /**
     * Set codec preferences for this content send stream. See `AudioVideoControllerFacade.setVideoCodecSendPreferences`
     * for more information.
     *
     * @param preferences Array of [[VideoCodecCapability]].
     */
    setContentShareVideoCodecPreferences?(preferences: VideoCodecCapability[]): void;
}