import { EncodedTransformMessage } from '../encodedtransformworker/EncodedTransform';
import { EncodedTransformMediaStreamMetrics } from '../encodedtransformworker/MediaMetricsEncodedTransform';
import Logger from '../logger/Logger';
import EncodedTransformManager from './EncodedTransformManager';
/**
 * Aggregated metrics from all encoded transform types, keyed by SSRC.
 * Reported periodically to observers for stats collection.
 */
export interface EncodedTransformMediaMetrics {
    /**
     * Outbound audio stream metrics.
     */
    audioSendMetrics: Record<number, EncodedTransformMediaStreamMetrics>;
    /**
     * Inbound audio stream metrics.
     */
    audioReceiveMetrics: Record<number, EncodedTransformMediaStreamMetrics>;
    /**
     * Outbound video stream metrics.
     */
    videoSendMetrics: Record<number, EncodedTransformMediaStreamMetrics>;
    /**
     * Inbound video stream metrics.
     */
    videoReceiveMetrics: Record<number, EncodedTransformMediaStreamMetrics>;
}
/**
 * Observer interface for receiving encoded transform media metrics.
 */
export interface EncodedTransformMediaMetricsObserver {
    /**
     * Called when new encoded transform media metrics become available.
     */
    encodedTransformMediaMetricsDidReceive?(metrics: EncodedTransformMediaMetrics): void;
    /**
     * Called when the first packet is seen for a new SSRC via encoded transform.
     */
    onFirstPacketReceived?(mediaType: 'audio' | 'video', direction: 'send' | 'receive', ssrc: number): void;
}
/**
 * Manages metrics collection for all media types (audio/video, sender/receiver).
 * Consolidates packet-level metrics from the Web Worker.
 */
export default class MediaMetricsTransformManager extends EncodedTransformManager {
    private audioSendMetrics;
    private audioReceiveMetrics;
    private videoSendMetrics;
    private videoReceiveMetrics;
    private observers;
    private metricsReportingScheduler;
    private readonly METRICS_REPORTING_INTERVAL_MS;
    constructor(worker: Worker, logger: Logger);
    /**
     * Start the metrics transform manager
     */
    start(): Promise<void>;
    /**
     * Get the transform names that this manager handles
     */
    transformNames(): string[];
    /**
     * Handle metrics messages from the Web Worker
     * Routes messages to the appropriate metrics property
     */
    handleWorkerMessage(message: EncodedTransformMessage): void;
    /**
     * Add an observer to receive media metrics
     */
    addObserver(observer: EncodedTransformMediaMetricsObserver): void;
    /**
     * Remove an observer
     */
    removeObserver(observer: EncodedTransformMediaMetricsObserver): void;
    /**
     * Start periodic metrics reporting to observers
     */
    private startMetricsReporting;
    /**
     * Report current metrics to all observers
     */
    private reportMetrics;
    /**
     * Stop metrics transform and release resources
     */
    stop(): Promise<void>;
}