text: /**
   * @licstart The following is the entire license notice for the
   * Javascript code in this page
   *
   * Copyright 2018 Mozilla Foundation
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * @licend The above is the entire license notice for the
   * Javascript code in this page
   */
  'use strict';
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports.JpegStream = undefined;
  
  var _util = require('../shared/util');
  
  var _stream = require('./stream');
  
  var _primitives = require('./primitives');
  
  var _jpg = require('./jpg');
  
  var JpegStream = function JpegStreamClosure() {
    function JpegStream(stream, maybeLength, dict, params) {
      var ch = void 0;
      while ((ch = stream.getByte()) !== -1) {
        if (ch === 0xFF) {
          stream.skip(-1);
          break;
        }
      }
      this.stream = stream;
      this.maybeLength = maybeLength;
      this.dict = dict;
      this.params = params;
      _stream.DecodeStream.call(this, maybeLength);
    }
    JpegStream.prototype = Object.create(_stream.DecodeStream.prototype);
    Object.defineProperty(JpegStream.prototype, 'bytes', {
      get: function JpegStream_bytes() {
        return (0, _util.shadow)(this, 'bytes', this.stream.getBytes(this.maybeLength));
      },
      configurable: true
    });
    JpegStream.prototype.ensureBuffer = function (requested) {};
    JpegStream.prototype.readBlock = function () {
      if (this.eof) {
        return;
      }
      var jpegOptions = {
        decodeTransform: undefined,
        colorTransform: undefined
      };
      var decodeArr = this.dict.getArray('Decode', 'D');
      if (this.forceRGB && Array.isArray(decodeArr)) {
        var bitsPerComponent = this.dict.get('BitsPerComponent') || 8;
        var decodeArrLength = decodeArr.length;
        var transform = new Int32Array(decodeArrLength);
        var transformNeeded = false;
        var maxValue = (1 << bitsPerComponent) - 1;
        for (var i = 0; i < decodeArrLength; i += 2) {
          transform[i] = (decodeArr[i + 1] - decodeArr[i]) * 256 | 0;
          transform[i + 1] = decodeArr[i] * maxValue | 0;
          if (transform[i] !== 256 || transform[i + 1] !== 0) {
            transformNeeded = true;
          }
        }
        if (transformNeeded) {
          jpegOptions.decodeTransform = transform;
        }
      }
      if ((0, _primitives.isDict)(this.params)) {
        var colorTransform = this.params.get('ColorTransform');
        if (Number.isInteger(colorTransform)) {
          jpegOptions.colorTransform = colorTransform;
        }
      }
      var jpegImage = new _jpg.JpegImage(jpegOptions);
      jpegImage.parse(this.bytes);
      var data = jpegImage.getData({
        width: this.drawWidth,
        height: this.drawHeight,
        forceRGB: this.forceRGB,
        isSourcePDF: true
      });
      this.buffer = data;
      this.bufferLength = data.length;
      this.eof = true;
    };
    JpegStream.prototype.getIR = function () {
      var forceDataSchema = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
  
      return (0, _util.createObjectURL)(this.bytes, 'image/jpeg', forceDataSchema);
    };
    return JpegStream;
  }();
  exports.JpegStream = JpegStream;