import Logger from '../logger/Logger';
export declare enum BackgroundSegmentationInitializationStatus {
    SUCCESS = 0,
    ASSET_LOADING_FAILURE = 1,
    COMPATIBILITY_FAILURE = 2,
    PROCESSOR_CREATION_FAILURE = 3
}
/**
 * [[BackgroundSegmentationInitializationMetrics]] contains metrics reported
 * once per processor creation by [[BackgroundSegmentationVideoFrameProcessor]].
 */
export interface BackgroundSegmentationInitializationMetrics {
    initializationStatus: BackgroundSegmentationInitializationStatus;
    assetLoadingTimeMs?: number;
}
export interface BackgroundSegmentationProcessorMetrics {
    segmentationDurationMs: number;
    effectRenderDurationMs: number;
    framesPerSegmentation: number;
    framesSubmitted: number;
    framesSegmented: number;
    estimatedCPUUsagePercentage: number;
    modelType: string;
    delegateType: string;
    initializationDurationMs?: number;
    initializationFailure?: number;
    errorCount: number;
}
/**
 * Observer interface for receiving background segmentation metrics
 */
export interface BackgroundSegmentationMetricsObserver {
    backgroundSegmentationInitializationMetricsDidReceive(metric: BackgroundSegmentationInitializationMetrics): void;
    backgroundSegmentationProcessorMetricsDidReceive(metric: BackgroundSegmentationProcessorMetrics): void;
}
/**
 * Metrics collection for background segmentation processing.
 * Collects one-time processor creation metrics and periodic CDN processor metrics.
 */
export default class BackgroundSegmentationMetrics {
    private logger;
    private static readonly MAX_BUFFERED_METRICS;
    private metricsCollector;
    private bufferedMetrics;
    private _initializationStatus;
    private _assetLoadingTimeMs;
    constructor(logger: Logger, metricsCollector?: BackgroundSegmentationMetricsObserver);
    /**
     * Update the metrics collector and flush any buffered metrics
     */
    setMetricsCollector(metricsCollector: BackgroundSegmentationMetricsObserver): void;
    private flushBufferedMetrics;
    reportCompatibilityCheck(isCompatible: boolean): void;
    reportAssetLoadingResult(error?: string, loadTimeMs?: number): void;
    reportProcessorError(): void;
    emitInitializationMetrics(): void;
    reportProcessorMetrics(metric: BackgroundSegmentationProcessorMetrics): void;
    private sendToCollector;
}