/**
 * MpegGscCodec - MPEG Gaussian Splat Coding Stub
 *
 * Placeholder implementation for the MPEG Gaussian Splat Coding (GSC) standard,
 * currently in the MPEG Exploration phase. This stub provides the architecture
 * for when the standard is finalized.
 *
 * Status (as of 2026-03-01):
 *   - MPEG Working Groups WG4, WG5, WG7 are exploring GSC
 *   - No formal standardization kicked off yet
 *   - Exploring compression via GPCC v1 and HEVC for GS data
 *   - Multiple approaches being evaluated (codec-based, point cloud-based)
 *
 * When the MPEG GSC standard is finalized, this stub will be replaced with
 * a full implementation. The IGaussianCodec interface ensures the rendering
 * pipeline does not need to change.
 *
 * Architecture decision (W.038):
 *   This stub exists to ensure the codec registry can handle MPEG GSC
 *   from day one when the standard ships, without requiring architecture changes.
 *
 * @module gpu/codecs
 * @version 1.0.0
 */
import { AbstractGaussianCodec } from './IGaussianCodec.js';
import type { GaussianSplatData, GaussianCodecCapabilities, GaussianDecodeOptions, CodecResult, CodecMetadata } from './types.js';
export declare class MpegGscCodec extends AbstractGaussianCodec {
    private readonly codecId;
    getCapabilities(): GaussianCodecCapabilities;
    canDecode(buffer: ArrayBuffer): boolean;
    extractMetadata(_buffer: ArrayBuffer): Promise<CodecMetadata>;
    decode(_buffer: ArrayBuffer, _options?: GaussianDecodeOptions): Promise<CodecResult<GaussianSplatData>>;
    decompress(_compressed: ArrayBuffer): Promise<ArrayBuffer>;
    /**
     * Get the current standardization status of MPEG GSC.
     *
     * This method is specific to the MPEG stub and provides context about
     * when the full implementation can be expected.
     */
    getStandardizationStatus(): MpegGscStatus;
    /**
     * Check if a newer version of the MPEG GSC codec is available.
     *
     * In the future, this could check a remote registry for codec updates.
     * For now, it always returns false since the standard is not finalized.
     */
    checkForUpdates(): Promise<boolean>;
}
/**
 * Information about the MPEG GSC standardization progress.
 */
export interface MpegGscStatus {
    /** Current phase in the MPEG standardization process */
    phase: 'exploration' | 'call_for_proposals' | 'working_draft' | 'committee_draft' | 'final_draft' | 'published';
    /** MPEG working groups involved */
    workingGroups: string[];
    /** Date of the most recent meeting with GSC discussion */
    lastMeetingDate: string;
    /** Name/number of the most recent meeting */
    lastMeetingName: string;
    /** Compression approaches being explored */
    compressionApproaches: string[];
    /** Expected timeline for standardization */
    expectedTimeline: string;
    /** URL for more information */
    referenceUrl: string;
}
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