import RedundantAudioRecoveryMetricsObserver from '../redundantaudiorecoverymetricsobserver/RedundantAudioRecoveryMetricsObserver';
import VideoStreamIdSet from '../videostreamidset/VideoStreamIdSet';
import VideoStreamIndex from '../videostreamindex/VideoStreamIndex';
/**
 * [[TransceiverController]] provides an interface for managing transceivers
 * associated with peer connection.
 */
export default interface TransceiverController {
    /**
     * Sets the peer connection.
     */
    setPeer(peer: RTCPeerConnection): void;
    /**
     * Resets the transceiver controller states.
     */
    reset(): void;
    /**
     * Indicates whether the transceiver is used.
     */
    useTransceivers(): boolean;
    /**
     *  Indicates if there is a video input attached
     */
    hasVideoInput(): boolean;
    /**
     * Returns whether the track is a video track.
     */
    trackIsVideoInput(track: MediaStreamTrack): boolean;
    /**
     * Creates audio and video transceivers.
     */
    setupLocalTransceivers(): void;
    /**
     * Sets the audio track.
     */
    setAudioInput(track: MediaStreamTrack | null): Promise<void>;
    /**
     * Replaces [[MediaStreamTrack]] on audio transceiver of sendrecv direction.
     */
    replaceAudioTrack(track: MediaStreamTrack): Promise<boolean>;
    /**
     * Sets the video track.
     */
    setVideoInput(track: MediaStreamTrack | null): Promise<void>;
    /**
     * Updates video transceivers.
     */
    updateVideoTransceivers(videoStreamIndex: VideoStreamIndex, videosToReceive: VideoStreamIdSet): number[];
    /**
     * Get the associated MID for a given stream ID, either set via `updateVideoTransceivers`
     * or overriden through `setStreamIdForMid`.
     *
     * Note: According to https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpTransceiver/mid
     * `mid` may not exist yet even if the transceiver has been created:
     * "This association is established, when possible, whenever either a local or remote description is applied.
     * This field is null if neither a local or remote description has been applied,
     * or if its associated m-line is rejected by either a remote offer or any answer."
     */
    getMidForStreamId?(streamId: number): string | undefined;
    /**
     * Override or set an internal mapping of stream ID to MID.
     */
    setStreamIdForMid?(mid: string, streamId: number): void;
    /**
     * Get the associated MID for a given group ID, set during `updateVideoTransceivers`
     */
    getMidForGroupId?(groupId: number): string | undefined;
    /**
     * Sets video sending bitrate in Kilo-bit-per-second
     */
    setVideoSendingBitrateKbps(bitrateKbps: number): void;
    /**
     * Returns the [[RTCRtpTransceiver]] for audio
     */
    localAudioTransceiver(): RTCRtpTransceiver;
    /**
     * Returns the [[RTCRtpTransceiver]] for local camera
     */
    localVideoTransceiver(): RTCRtpTransceiver;
    /**
     * Set [[RTCRtpEncodingParameters]] on the sender of transceiver.
     * This method should be called whenever the sender's encoding parameters of the local video transceiver need to
     * be updated.
     * For example, the default NScaleVideoUplinkBandwidthPolicy calls this method whenever a video is on/off or the
     * active speaker changes.
     * This method assumes that the sender of the local video transceiver is available and the input parameters should
     * not be empty.
     * The encoding parameters for sender should be retrieved using sender.getParameters and updated using
     * sender.setParameters method.
     * @param {Map<string, RTCRtpEncodingParameters>} params - The encoding parameters. If you have multiple encoding
     * parameters for different video layers, the key should be the rid corresponding to the RTCRtpEncodingParameters.
     */
    setEncodingParameters(params: Map<string, RTCRtpEncodingParameters>): void;
    /**
     * @deprecated This method is deprecated and should not be used.
     * Access the encodedTransformWorkerManager directly via the meeting session context instead.
     */
    setAudioPayloadTypes?(payloadType: Map<string, number>): void;
    /**
     * @deprecated This method is deprecated and should not be used.
     * Access the encodedTransformWorkerManager directly via the meeting session context instead.
     */
    addRedundantAudioRecoveryMetricsObserver?(observer: RedundantAudioRecoveryMetricsObserver): void;
    /**
     * @deprecated This method is deprecated and should not be used.
     * Access the encodedTransformWorkerManager directly via the meeting session context instead.
     */
    removeRedundantAudioRecoveryMetricsObserver?(observer: RedundantAudioRecoveryMetricsObserver): void;
}