src/modules/webp_support.js

  1. /* global jsPDF,  JPEGEncoder, WebPDecoder */
  2. /**
  3.  * @license
  4.  * Copyright (c) 2019 Aras Abbasi
  5.  *
  6.  * Licensed under the MIT License.
  7.  * http://opensource.org/licenses/mit-license
  8.  */
  10. /**
  11.  * jsPDF webp Support PlugIn
  12.  *
  13.  * @name webp_support
  14.  * @module
  15.  */
  16. (function(jsPDFAPI) {
  17.   "use strict";
  19.   jsPDFAPI.processWEBP = function(imageData, index, alias, compression) {
  20.     var reader = new WebPDecoder(imageData, false);
  21.     var width = reader.width,
  22.       height = reader.height;
  23.     var qu = 100;
  24.     var pixels = reader.getData();
  26.     var rawImageData = {
  27.       data: pixels,
  28.       width: width,
  29.       height: height
  30.     };
  32.     var encoder = new JPEGEncoder(qu);
  33.     var data = encoder.encode(rawImageData, qu);
  34.     return jsPDFAPI.processJPEG.call(this, data, index, alias, compression);
  35.   };
  36. })(jsPDF.API);