51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
"use strict";
|
|
var __importDefault = (this && this.__importDefault) || function (mod) {
|
|
return (mod && mod.__esModule) ? mod : { "default": mod };
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.default = tiff;
|
|
const utif2_1 = __importDefault(require("utif2"));
|
|
function getDimensionValue(dimension) {
|
|
if (typeof dimension === "number") {
|
|
return dimension;
|
|
}
|
|
if (dimension instanceof Uint8Array) {
|
|
return dimension[0];
|
|
}
|
|
if (typeof dimension[0] === "string") {
|
|
return parseInt(dimension[0]);
|
|
}
|
|
return dimension[0];
|
|
}
|
|
function tiff() {
|
|
return {
|
|
mime: "image/tiff",
|
|
encode: (bitmap) => {
|
|
const tiff = utif2_1.default.encodeImage(bitmap.data, bitmap.width, bitmap.height);
|
|
return Buffer.from(tiff);
|
|
},
|
|
decode: (data) => {
|
|
const ifds = utif2_1.default.decode(data);
|
|
const page = ifds[0];
|
|
if (!page) {
|
|
throw new Error("No page found in TIFF");
|
|
}
|
|
if (!page.t256) {
|
|
throw new Error("No image width found in TIFF");
|
|
}
|
|
if (!page.t257) {
|
|
throw new Error("No image height found in TIFF");
|
|
}
|
|
ifds.forEach((ifd) => {
|
|
utif2_1.default.decodeImage(data, ifd);
|
|
});
|
|
const rgba = utif2_1.default.toRGBA8(page);
|
|
return {
|
|
data: Buffer.from(rgba),
|
|
width: getDimensionValue(page.t256),
|
|
height: getDimensionValue(page.t257),
|
|
};
|
|
},
|
|
};
|
|
}
|
|
//# sourceMappingURL=index.js.map
|