imagerot
Version:
A lightweight, cross-environment image library for applying unique effects via raw image buffers.
31 lines (30 loc) • 1.56 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.urlToBuffer = void 0;
const urlToBuffer = (url) => __awaiter(void 0, void 0, void 0, function* () {
const response = yield fetch(url);
const imageBlob = yield response.blob();
const imageBitmap = yield createImageBitmap(imageBlob);
const canvas = new OffscreenCanvas(imageBitmap.width, imageBitmap.height);
const context = canvas.getContext('2d');
if (context) {
context.drawImage(imageBitmap, 0, 0, imageBitmap.width, imageBitmap.height);
const imageData = context.getImageData(0, 0, imageBitmap.width, imageBitmap.height);
return [
new Uint8Array(imageData.data.buffer),
imageBitmap.width,
imageBitmap.height
];
}
throw new Error('Failed to get context');
});
exports.urlToBuffer = urlToBuffer;