@snap/camera-kit/dist/session/LensPerformanceMetrics.d.ts

Camera Kit Web

import type { Observable } from "rxjs";
import { LensPerformanceMeasurement } from "./LensPerformanceMeasurement";
import type { FrameEvent } from "./frameEvents";
/**
 * Use to measure lens rendering performance.
 *
 * The {@link LensPerformanceMetrics.beginMeasurement} method is used to start measuring rendering performance. After
 * a measurement has begun, performance metrics can be read using {@link LensPerformanceMeasurement}.
 *
 * @example
 * ```ts
 * const measurement = cameraKitSession.metrics.beginMeasurement()
 * // some time later
 * console.log(measurement.measure())
 * ```
 *
 * @category Rendering
 * @category Metrics
 */
export declare class LensPerformanceMetrics {
    private readonly measurementInstances;
    private readonly subscription;
    /** @internal */
    constructor(frameEvents: Observable<FrameEvent>);
    /**
     * Begin a measurement window, during which time rendering metrics will be gathered.
     *
     * @returns A {@link LensPerformanceMeasurement} representing an ongoing measurement of aggregated rendering
     * metrics, from which specific metrics can be obtained.
     */
    beginMeasurement(): LensPerformanceMeasurement;
    destroy(): void;
}
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