@julesl23/s5js/dist/src/media/fallback/canvas.d.ts

Enhanced TypeScript SDK for S5 decentralized storage with path-based API, media processing, and directory utilities

import type { ImageMetadata } from '../types.js';
/**
 * Canvas-based fallback for metadata extraction
 * Works in browsers without WASM support
 */
export declare class CanvasMetadataExtractor {
    /**
     * Extract metadata from an image blob using Canvas API
     */
    static extract(blob: Blob): Promise<ImageMetadata | undefined>;
    /**
     * Get image dimensions using the Image API
     */
    private static getImageDimensions;
    /**
     * Load image with timeout
     */
    private static loadImage;
    /**
     * Extract dominant colors from image
     */
    private static extractColors;
    /**
     * K-means clustering for color extraction
     */
    private static kMeansClustering;
    /**
     * Calculate Euclidean distance between two colors in RGB space
     */
    private static colorDistance;
    /**
     * Calculate aspect ratio information
     */
    private static calculateAspectRatio;
    /**
     * Detect image orientation
     */
    private static detectOrientation;
    /**
     * Validate image type and data
     */
    private static validateImageType;
    /**
     * Determine sampling strategy based on image size
     */
    private static determineSamplingStrategy;
    /**
     * Classify processing speed
     */
    private static classifyProcessingSpeed;
    /**
     * Detect image format from MIME type
     */
    static detectFormat(mimeType: string): ImageMetadata['format'];
    /**
     * Check if a format typically supports transparency
     */
    static hasTransparency(format: ImageMetadata['format']): boolean;
    /**
     * Advanced metadata extraction using Canvas (if needed in future)
     */
    static extractAdvanced(blob: Blob): Promise<ImageMetadata | undefined>;
    /**
     * Check Canvas API availability
     */
    static isAvailable(): boolean;
}
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