8bc66a4ee9
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- Remove all Chinese characters from src/, example/, ios/, patches/, tests/ - Add esbuild-based build obfuscation (minify + identifier mangle + no sourcemaps) - Drop src/ from npm publish, only ship minified dist/ - Remove source maps and declaration maps from build output - Add README icons and visual polish throughout - Fix broken Table of Contents anchor links in README Co-authored-by: Cursor <cursoragent@cursor.com>
49 lines
2.6 KiB
TypeScript
49 lines
2.6 KiB
TypeScript
import { type Mat } from 'react-native-fast-opencv';
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export declare const PNG_EXT = ".png";
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/** PNG compression level 0 = lossless */
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export declare const PNG_COMPRESSION = 0;
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export declare function normalizePath(path: string): string;
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/** Skia useImage requires a URI; OpenCV / RNFS use bare paths */
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export declare function toSkiaUri(path: string | null | undefined): string | null;
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export declare function toPngFileName(name: string): string;
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export declare function isPngPath(path: string): boolean;
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/** Generate fingerprint from file metadata to avoid full-file read (original base64 full hash was extremely slow on 1.5MB images) */
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export declare function fileContentFingerprint(path: string): Promise<string>;
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/** Any image path → PNG file path under cache dir (copy if already PNG, otherwise decode and save) */
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export declare function ensurePngFile(sourcePath: string, cacheFileName: string): Promise<string>;
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/** Generate a stable PNG cache name from the source path */
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export declare function pngCacheName(sourcePath: string, prefix: string): string;
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/** Clean up segmentation/OpenCV derived cache, keep original image and mask source files */
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export declare function clearDerivedImageCache(): Promise<number>;
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type PngHeader = {
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width: number;
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height: number;
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bitDepth: number;
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colorType: number;
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};
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/** Parse PNG IHDR from base64 (without OpenCV), used as fallback when 16-bit Mat toJSValue crashes */
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export declare function readPngHeaderFromBase64(base64: string): PngHeader;
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/** 16-bit / float Mat → 8-bit (fast-opencv toJSValue truncates high bits before patch).
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* Semantic mask PNGs use 16-bit RGB where the label (0-255) is stored as value×257;
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* use 1/257 scaling for 3+ channel 16-bit cases so the resulting 8-bit channels contain
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* the original semantic label values (consistent with the native ensure8U patch).
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*
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* pngHeader (optional): when toJSValue crashes due to 16-bit Mat, use PNG file header info
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* for fallback conversion, bypassing native toJSValue call.
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*/
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export declare function ensureMat8U(srcMat: Mat, pngHeader?: PngHeader): {
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mat: Mat;
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extraReleaseIds: string[];
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};
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export type PngBgrBuffer = {
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buffer: Uint8Array;
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cols: number;
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rows: number;
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};
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export declare function prewarmPngBgrCache(paths: string[]): void;
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export declare function prewarmPngBgrCacheAsync(paths: string[]): Promise<void>;
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export declare function pngContentCacheKey(path: string): Promise<string>;
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export declare function readPngBgrBuffer(path: string): Promise<PngBgrBuffer>;
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export declare function resizeBgrBuffer(buffer: Uint8Array, srcCols: number, srcRows: number, dstCols: number, dstRows: number): Uint8Array;
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export {};
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