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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335// Copyright Dirk Lemstra https://github.com/dlemstra/magick-wasm.// Licensed under the Apache License, Version 2.0.import MagickNative, { ImageMagickApi, IWasmLocator } from "./wasm/magick.ts";import { IMagickImage, MagickImage } from "./magick-image.ts";import { IMagickImageCollection, MagickImageCollection,} from "./magick-image-collection.ts";import { MagickColor } from "./magick-color.ts";import { MagickError } from "./magick-error.ts";import { MagickFormat } from "./magick-format.ts";import { MagickReadSettings } from "./settings/magick-read-settings.ts";import { _withNativeString } from "./internal/native/string.ts";import { ByteArray } from "./byte-array.ts";
class WasmLocator implements IWasmLocator { private _wasmLocation: string | undefined;
constructor(wasmLocationOrData?: string | ByteArray) { if (wasmLocationOrData !== undefined) { if (typeof wasmLocationOrData === "string") { this._wasmLocation = wasmLocationOrData; } else { this.wasmBinary = wasmLocationOrData; } } }
wasmBinary?: ByteArray;
locateFile = (path: string, scriptDirectory: string): string => { let wasmLocation = this._wasmLocation;
if (wasmLocation === undefined || wasmLocation.length === 0) { wasmLocation = scriptDirectory + path; }
return wasmLocation; };}
export class ImageMagick { private readonly loader: ( wasmLocationOrData?: string | ByteArray, ) => Promise<void>; private api?: ImageMagickApi;
private constructor() { this.loader = (wasmLocationOrData?: string | ByteArray) => new Promise((resolve, reject) => { if (this.api !== undefined) { resolve(); return; }
const wasmLocator = new WasmLocator(wasmLocationOrData); MagickNative(wasmLocator).then((api) => { try { _withNativeString(api, "MAGICK_CONFIGURE_PATH", (name) => { _withNativeString(api, "/xml", (value) => { api._Environment_SetEnv(name, value); this.api = api; resolve(); }); }); } catch (error) { reject(error); } }); }); }
static _create = (): ImageMagick => new ImageMagick();
/** @internal */ async _initialize(wasmLocationOrData?: string | ByteArray): Promise<void> { await this.loader(wasmLocationOrData); }
/** @internal */ static get _api(): ImageMagickApi { if (!instance.api) { throw new MagickError( "`await initializeImageMagick` should be called to initialize the library", ); }
return instance.api; }
/** @internal */ static set _api(value: ImageMagickApi) { instance.api = value; }
static read<TReturnType>( color: MagickColor, width: number, height: number, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( color: MagickColor, width: number, height: number, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( array: ByteArray, format: MagickFormat, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( array: ByteArray, format: MagickFormat, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( array: ByteArray, settings: MagickReadSettings, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( array: ByteArray, settings: MagickReadSettings, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( array: ByteArray, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( array: ByteArray, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( fileName: string, format: MagickFormat, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( fileName: string, format: MagickFormat, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( fileName: string, settings: MagickReadSettings, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( fileName: string, settings: MagickReadSettings, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( fileName: string, func: (image: IMagickImage) => TReturnType, ): TReturnType; static read<TReturnType>( fileName: string, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static read<TReturnType>( colorOrArrayOrFileName: MagickColor | ByteArray | string, widthOrFormatOrSetttingsOrFunc: | number | MagickFormat | MagickReadSettings | ((image: IMagickImage) => TReturnType | Promise<TReturnType>), heightOrFunc?: | number | ((image: IMagickImage) => TReturnType | Promise<TReturnType>), func?: (image: IMagickImage) => TReturnType | Promise<TReturnType>, ): TReturnType | Promise<TReturnType> { return MagickImage._use((image) => { let callback = func; if (colorOrArrayOrFileName instanceof MagickColor) { if ( typeof widthOrFormatOrSetttingsOrFunc === "number" && typeof heightOrFunc === "number" ) { image.read( colorOrArrayOrFileName, widthOrFormatOrSetttingsOrFunc, heightOrFunc, ); } } else if ( typeof widthOrFormatOrSetttingsOrFunc !== "number" && typeof heightOrFunc !== "number" ) { callback = heightOrFunc; let settings: MagickReadSettings | undefined = undefined; if (widthOrFormatOrSetttingsOrFunc instanceof MagickReadSettings) { settings = widthOrFormatOrSetttingsOrFunc; } else if (typeof widthOrFormatOrSetttingsOrFunc === "string") { settings = new MagickReadSettings(); settings.format = widthOrFormatOrSetttingsOrFunc; } else { callback = widthOrFormatOrSetttingsOrFunc; }
if (typeof colorOrArrayOrFileName === "string") { image.read(colorOrArrayOrFileName, settings); } else { image.read(colorOrArrayOrFileName, settings); } }
/* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */ return callback!(image); }); }
static readCollection<TReturnType>( array: ByteArray, format: MagickFormat, func: (images: IMagickImageCollection) => TReturnType, ): TReturnType; static readCollection<TReturnType>( array: ByteArray, format: MagickFormat, func: (images: IMagickImageCollection) => Promise<TReturnType>, ): Promise<TReturnType>; static readCollection<TReturnType>( array: ByteArray, settings: MagickReadSettings, func: (images: IMagickImageCollection) => TReturnType, ): TReturnType; static readCollection<TReturnType>( array: ByteArray, settings: MagickReadSettings, func: (images: IMagickImageCollection) => Promise<TReturnType>, ): Promise<TReturnType>; static readCollection<TReturnType>( array: ByteArray, settings: MagickReadSettings, func: (images: IMagickImageCollection) => TReturnType, ): TReturnType; static readCollection<TReturnType>( array: ByteArray, settings: MagickReadSettings, func: (images: IMagickImageCollection) => Promise<TReturnType>, ): Promise<TReturnType>; static readCollection<TReturnType>( array: ByteArray, func: (images: IMagickImageCollection) => TReturnType, ): TReturnType; static readCollection<TReturnType>( array: ByteArray, func: (images: IMagickImageCollection) => Promise<TReturnType>, ): Promise<TReturnType>; static readCollection<TReturnType>( fileName: string, settings: MagickReadSettings, func: (images: IMagickImageCollection) => TReturnType, ): TReturnType; static readCollection<TReturnType>( fileName: string, settings: MagickReadSettings, func: (images: IMagickImageCollection) => Promise<TReturnType>, ): Promise<TReturnType>; static readCollection<TReturnType>( fileName: string, func: (images: IMagickImageCollection) => TReturnType, ): TReturnType; static readCollection<TReturnType>( fileName: string, func: (images: IMagickImageCollection) => Promise<TReturnType>, ): Promise<TReturnType>; static readCollection<TReturnType>( arrayOrFileName: ByteArray | string, formatOrSettingsOrFunc: | MagickFormat | MagickReadSettings | (( images: IMagickImageCollection, ) => TReturnType | Promise<TReturnType>), func?: ( images: IMagickImageCollection, ) => TReturnType | Promise<TReturnType>, ): TReturnType | Promise<TReturnType> { const collection = MagickImageCollection.create(); return collection._use((images) => { let callback = func; let settings: MagickReadSettings | undefined = undefined; if (formatOrSettingsOrFunc instanceof MagickReadSettings) { settings = formatOrSettingsOrFunc; } else if (typeof formatOrSettingsOrFunc === "string") { settings = new MagickReadSettings(); settings.format = formatOrSettingsOrFunc; } else { callback = formatOrSettingsOrFunc; }
if (typeof arrayOrFileName === "string") { images.read(arrayOrFileName, settings); } else { images.read(arrayOrFileName, settings); }
/* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */ return callback!(images); }); }
static readFromCanvas<TReturnType>( canvas: HTMLCanvasElement, func: (image: IMagickImage) => TReturnType, ): TReturnType; static readFromCanvas<TReturnType>( canvas: HTMLCanvasElement, func: (image: IMagickImage) => Promise<TReturnType>, ): Promise<TReturnType>; static readFromCanvas<TReturnType>( canvas: HTMLCanvasElement, func: (image: IMagickImage) => TReturnType | Promise<TReturnType>, ): TReturnType | Promise<TReturnType> { return MagickImage._use((image) => { image.readFromCanvas(canvas); return func(image); }); }}
/** @internal */const instance = ImageMagick._create();
export async function initializeImageMagick( wasmLocationOrData?: string | ByteArray,): Promise<void> { await instance._initialize(wasmLocationOrData);}