import type { WebGPUContext } from './WebGPUContext.js';
import type { GaussianSplatSorter, CameraState } from './GaussianSplatSorter.js';
import type { INeuralSplatPacket } from '@holoscript/core';
export interface ExtractorOptions {
    /** Maximum splats to extract */
    maxSplats: number;
}
/**
 * Extracts raw GPU sorted data from a GaussianSplatSorter.
 * Uses GPUBuffer.mapAsync to read back the `compressedSplatBuffer` and `sortValuesA` buffers
 * which contain the natively sorted WebGPU output.
 *
 * Mitigation for mapAsync stalls: We use double buffering to pipeline the readbacks.
 */
export declare class GaussianSplatExtractor {
    private context;
    private device;
    private options;
    private readbackBuffersA;
    private readbackBuffersB;
    private isUsingA;
    private ongoingReadback;
    private frameCounter;
    constructor(context: WebGPUContext, options: ExtractorOptions);
    private initializeBuffers;
    private createReadbackBuffer;
    /**
     * Captures the sorted state of the GaussianSplatSorter.
     * Internally pipelines the GPU readback to avoid stalling the main render loop.
     */
    extractFrame(sorter: GaussianSplatSorter, camera: CameraState, compressedSource: GPUBuffer, indicesSource: GPUBuffer): Promise<INeuralSplatPacket | null>;
}
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