@cleerlycode/cornerstone-wado-image-loader/dist/cornerstoneWADOImageLoaderWebWorker.js

Cornerstone ImageLoader for DICOM WADO-URI

/*! cornerstone-wado-image-loader - 2.0.0 - 2018-04-01 | (c) 2016 Chris Hafey | https://github.com/cornerstonejs/cornerstoneWADOImageLoader */
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		define("cornerstoneWADOImageLoaderWebWorker", [], factory);
	else if(typeof exports === 'object')
		exports["cornerstoneWADOImageLoaderWebWorker"] = factory();
	else
		root["cornerstoneWADOImageLoaderWebWorker"] = factory();
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/***/ 2:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
function getMinMax(storedPixelData) {
  // we always calculate the min max values since they are not always
  // present in DICOM and we don't want to trust them anyway as cornerstone
  // depends on us providing reliable values for these
  var min = storedPixelData[0];
  var max = storedPixelData[0];
  var storedPixel = void 0;
  var numPixels = storedPixelData.length;

  for (var index = 1; index < numPixels; index++) {
    storedPixel = storedPixelData[index];
    min = Math.min(min, storedPixel);
    max = Math.max(max, storedPixel);
  }

  return {
    min: min,
    max: max
  };
}

exports.default = getMinMax;

/***/ }),

/***/ 37:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
function decodeJpx(imageFrame, pixelData) {
  var jpxImage = new JpxImage();

  jpxImage.parse(pixelData);

  var tileCount = jpxImage.tiles.length;

  if (tileCount !== 1) {
    throw new Error('JPEG2000 decoder returned a tileCount of ' + tileCount + ', when 1 is expected');
  }

  imageFrame.columns = jpxImage.width;
  imageFrame.rows = jpxImage.height;
  imageFrame.pixelData = jpxImage.tiles[0].items;

  return imageFrame;
}

var openJPEG = void 0;

function decodeOpenJPEG(data, bytesPerPixel, signed) {
  var dataPtr = openJPEG._malloc(data.length);

  openJPEG.writeArrayToMemory(data, dataPtr);

  // create param outpout
  var imagePtrPtr = openJPEG._malloc(4);
  var imageSizePtr = openJPEG._malloc(4);
  var imageSizeXPtr = openJPEG._malloc(4);
  var imageSizeYPtr = openJPEG._malloc(4);
  var imageSizeCompPtr = openJPEG._malloc(4);

  var t0 = new Date().getTime();
  var ret = openJPEG.ccall('jp2_decode', 'number', ['number', 'number', 'number', 'number', 'number', 'number', 'number'], [dataPtr, data.length, imagePtrPtr, imageSizePtr, imageSizeXPtr, imageSizeYPtr, imageSizeCompPtr]);
  // add num vomp..etc

  if (ret !== 0) {
    console.log('[opj_decode] decoding failed!');
    openJPEG._free(dataPtr);
    openJPEG._free(openJPEG.getValue(imagePtrPtr, '*'));
    openJPEG._free(imageSizeXPtr);
    openJPEG._free(imageSizeYPtr);
    openJPEG._free(imageSizePtr);
    openJPEG._free(imageSizeCompPtr);

    return;
  }

  var imagePtr = openJPEG.getValue(imagePtrPtr, '*');

  var image = {
    length: openJPEG.getValue(imageSizePtr, 'i32'),
    sx: openJPEG.getValue(imageSizeXPtr, 'i32'),
    sy: openJPEG.getValue(imageSizeYPtr, 'i32'),
    nbChannels: openJPEG.getValue(imageSizeCompPtr, 'i32'), // hard coded for now
    perf_timetodecode: undefined,
    pixelData: undefined
  };

  // Copy the data from the EMSCRIPTEN heap into the correct type array
  var length = image.sx * image.sy * image.nbChannels;
  var src32 = new Int32Array(openJPEG.HEAP32.buffer, imagePtr, length);

  if (bytesPerPixel === 1) {
    if (Uint8Array.from) {
      image.pixelData = Uint8Array.from(src32);
    } else {
      image.pixelData = new Uint8Array(length);
      for (var i = 0; i < length; i++) {
        image.pixelData[i] = src32[i];
      }
    }
  } else if (signed) {
    if (Int16Array.from) {
      image.pixelData = Int16Array.from(src32);
    } else {
      image.pixelData = new Int16Array(length);
      for (var _i = 0; _i < length; _i++) {
        image.pixelData[_i] = src32[_i];
      }
    }
  } else if (Uint16Array.from) {
    image.pixelData = Uint16Array.from(src32);
  } else {
    image.pixelData = new Uint16Array(length);
    for (var _i2 = 0; _i2 < length; _i2++) {
      image.pixelData[_i2] = src32[_i2];
    }
  }

  var t1 = new Date().getTime();

  image.perf_timetodecode = t1 - t0;

  // free
  openJPEG._free(dataPtr);
  openJPEG._free(imagePtrPtr);
  openJPEG._free(imagePtr);
  openJPEG._free(imageSizePtr);
  openJPEG._free(imageSizeXPtr);
  openJPEG._free(imageSizeYPtr);
  openJPEG._free(imageSizeCompPtr);

  return image;
}

function decodeOpenJpeg2000(imageFrame, pixelData) {
  var bytesPerPixel = imageFrame.bitsAllocated <= 8 ? 1 : 2;
  var signed = imageFrame.pixelRepresentation === 1;

  var image = decodeOpenJPEG(pixelData, bytesPerPixel, signed);

  imageFrame.columns = image.sx;
  imageFrame.rows = image.sy;
  imageFrame.pixelData = image.pixelData;
  if (image.nbChannels > 1) {
    imageFrame.photometricInterpretation = 'RGB';
  }

  return imageFrame;
}

function initializeJPEG2000(decodeConfig) {
  // check to make sure codec is loaded
  if (!decodeConfig.usePDFJS) {
    if (typeof OpenJPEG === 'undefined') {
      throw new Error('OpenJPEG decoder not loaded');
    }
  }

  if (!openJPEG) {
    openJPEG = OpenJPEG();
    if (!openJPEG || !openJPEG._jp2_decode) {
      throw new Error('OpenJPEG failed to initialize');
    }
  }
}

function decodeJPEG2000(imageFrame, pixelData, decodeConfig) {
  var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};

  initializeJPEG2000(decodeConfig);

  if (options.usePDFJS || decodeConfig.usePDFJS) {
    // OHIF image-JPEG2000 https://github.com/OHIF/image-JPEG2000
    // console.log('PDFJS')
    return decodeJpx(imageFrame, pixelData);
  }

  // OpenJPEG2000 https://github.com/jpambrun/openjpeg
  // console.log('OpenJPEG')
  return decodeOpenJpeg2000(imageFrame, pixelData);
}

exports.default = decodeJPEG2000;
exports.initializeJPEG2000 = initializeJPEG2000;

/***/ }),

/***/ 38:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
var charLS = void 0;

function jpegLSDecode(data, isSigned) {
  // prepare input parameters
  var dataPtr = charLS._malloc(data.length);

  charLS.writeArrayToMemory(data, dataPtr);

  // prepare output parameters
  var imagePtrPtr = charLS._malloc(4);
  var imageSizePtr = charLS._malloc(4);
  var widthPtr = charLS._malloc(4);
  var heightPtr = charLS._malloc(4);
  var bitsPerSamplePtr = charLS._malloc(4);
  var stridePtr = charLS._malloc(4);
  var allowedLossyErrorPtr = charLS._malloc(4);
  var componentsPtr = charLS._malloc(4);
  var interleaveModePtr = charLS._malloc(4);

  // Decode the image
  var result = charLS.ccall('jpegls_decode', 'number', ['number', 'number', 'number', 'number', 'number', 'number', 'number', 'number', 'number', 'number', 'number'], [dataPtr, data.length, imagePtrPtr, imageSizePtr, widthPtr, heightPtr, bitsPerSamplePtr, stridePtr, componentsPtr, allowedLossyErrorPtr, interleaveModePtr]);

  // Extract result values into object
  var image = {
    result: result,
    width: charLS.getValue(widthPtr, 'i32'),
    height: charLS.getValue(heightPtr, 'i32'),
    bitsPerSample: charLS.getValue(bitsPerSamplePtr, 'i32'),
    stride: charLS.getValue(stridePtr, 'i32'),
    components: charLS.getValue(componentsPtr, 'i32'),
    allowedLossyError: charLS.getValue(allowedLossyErrorPtr, 'i32'),
    interleaveMode: charLS.getValue(interleaveModePtr, 'i32'),
    pixelData: undefined
  };

  // Copy image from emscripten heap into appropriate array buffer type
  var imagePtr = charLS.getValue(imagePtrPtr, '*');

  if (image.bitsPerSample <= 8) {
    image.pixelData = new Uint8Array(image.width * image.height * image.components);
    image.pixelData.set(new Uint8Array(charLS.HEAP8.buffer, imagePtr, image.pixelData.length));
  } else if (isSigned) {
    image.pixelData = new Int16Array(image.width * image.height * image.components);
    image.pixelData.set(new Int16Array(charLS.HEAP16.buffer, imagePtr, image.pixelData.length));
  } else {
    image.pixelData = new Uint16Array(image.width * image.height * image.components);
    image.pixelData.set(new Uint16Array(charLS.HEAP16.buffer, imagePtr, image.pixelData.length));
  }

  // free memory and return image object
  charLS._free(dataPtr);
  charLS._free(imagePtr);
  charLS._free(imagePtrPtr);
  charLS._free(imageSizePtr);
  charLS._free(widthPtr);
  charLS._free(heightPtr);
  charLS._free(bitsPerSamplePtr);
  charLS._free(stridePtr);
  charLS._free(componentsPtr);
  charLS._free(interleaveModePtr);

  return image;
}

function initializeJPEGLS() {
  // check to make sure codec is loaded
  if (typeof CharLS === 'undefined') {
    throw new Error('No JPEG-LS decoder loaded');
  }

  // Try to initialize CharLS
  // CharLS https://github.com/cornerstonejs/charls
  if (!charLS) {
    charLS = CharLS();
    if (!charLS || !charLS._jpegls_decode) {
      throw new Error('JPEG-LS failed to initialize');
    }
  }
}

function decodeJPEGLS(imageFrame, pixelData) {
  initializeJPEGLS();

  var image = jpegLSDecode(pixelData, imageFrame.pixelRepresentation === 1);

  // throw error if not success or too much data
  if (image.result !== 0 && image.result !== 6) {
    throw new Error('JPEG-LS decoder failed to decode frame (error code ' + image.result + ')');
  }

  imageFrame.columns = image.width;
  imageFrame.rows = image.height;
  imageFrame.pixelData = image.pixelData;

  return imageFrame;
}

exports.default = decodeJPEGLS;
exports.initializeJPEGLS = initializeJPEGLS;

/***/ }),

/***/ 55:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.version = exports.registerTaskHandler = undefined;

var _version = __webpack_require__(9);

Object.defineProperty(exports, 'version', {
  enumerable: true,
  get: function get() {
    return _interopRequireDefault(_version).default;
  }
});

var _webWorker = __webpack_require__(56);

var _decodeTask = __webpack_require__(57);

var _decodeTask2 = _interopRequireDefault(_decodeTask);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// register our task
(0, _webWorker.registerTaskHandler)(_decodeTask2.default);

exports.registerTaskHandler = _webWorker.registerTaskHandler;

/***/ }),

/***/ 56:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.registerTaskHandler = registerTaskHandler;
// an object of task handlers
var taskHandlers = {};

// Flag to ensure web worker is only initialized once
var initialized = false;

// the configuration object passed in when the web worker manager is initialized
var config = void 0;

/**
 * Initialization function that loads additional web workers and initializes them
 * @param data
 */
function initialize(data) {
  // console.log('web worker initialize ', data.workerIndex);
  // prevent initialization from happening more than once
  if (initialized) {
    return;
  }

  // save the config data
  config = data.config;

  // load any additional web worker tasks
  if (data.config.webWorkerTaskPaths) {
    for (var i = 0; i < data.config.webWorkerTaskPaths.length; i++) {
      self.importScripts(data.config.webWorkerTaskPaths[i]);
    }
  }

  // initialize each task handler
  Object.keys(taskHandlers).forEach(function (key) {
    taskHandlers[key].initialize(config.taskConfiguration);
  });

  // tell main ui thread that we have completed initialization
  self.postMessage({
    taskType: 'initialize',
    status: 'success',
    result: {},
    workerIndex: data.workerIndex
  });

  initialized = true;
}

/**
 * Function exposed to web worker tasks to register themselves
 * @param taskHandler
 */
function registerTaskHandler(taskHandler) {
  if (taskHandlers[taskHandler.taskType]) {
    console.log('attempt to register duplicate task handler "', taskHandler.taskType, '"');

    return false;
  }
  taskHandlers[taskHandler.taskType] = taskHandler;
  if (initialized) {
    taskHandler.initialize(config.taskConfiguration);
  }
}

/**
 * Function to load a new web worker task with updated configuration
 * @param data
 */
function loadWebWorkerTask(data) {
  config = data.config;
  self.importScripts(data.sourcePath);
}

/**
 * Web worker message handler - dispatches messages to the registered task handlers
 * @param msg
 */
self.onmessage = function (msg) {
  // console.log('web worker onmessage', msg.data);

  // handle initialize message
  if (msg.data.taskType === 'initialize') {
    initialize(msg.data);

    return;
  }

  // handle loadWebWorkerTask message
  if (msg.data.taskType === 'loadWebWorkerTask') {
    loadWebWorkerTask(msg.data);

    return;
  }

  // dispatch the message if there is a handler registered for it
  if (taskHandlers[msg.data.taskType]) {
    taskHandlers[msg.data.taskType].handler(msg.data, function (result, transferList) {
      self.postMessage({
        taskType: msg.data.taskType,
        status: 'success',
        result: result,
        workerIndex: msg.data.workerIndex
      }, transferList);
    });

    return;
  }

  // not task handler registered - send a failure message back to ui thread
  console.log('no task handler for ', msg.data.taskType);
  console.log(taskHandlers);
  self.postMessage({
    taskType: msg.data.taskType,
    status: 'failed - no task handler registered',
    workerIndex: msg.data.workerIndex
  });
};

/***/ }),

/***/ 57:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _decodeJPEG = __webpack_require__(37);

var _decodeJPEGLS = __webpack_require__(38);

var _getMinMax = __webpack_require__(2);

var _getMinMax2 = _interopRequireDefault(_getMinMax);

var _decodeImageFrame = __webpack_require__(58);

var _decodeImageFrame2 = _interopRequireDefault(_decodeImageFrame);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var kTaskType = 'decodeTask';

// flag to ensure codecs are loaded only once
var codecsLoaded = false;

// the configuration object for the decodeTask
var decodeConfig = void 0;

/**
 * Function to control loading and initializing the codecs
 */
function loadCodecs() {
  // prevent loading codecs more than once
  if (codecsLoaded) {
    return;
  }

  // Load the codecs
  // console.time('loadCodecs');
  self.importScripts(decodeConfig.codecsPath);
  codecsLoaded = true;
  // console.timeEnd('loadCodecs');

  // Initialize the codecs
  if (decodeConfig.initializeCodecsOnStartup) {
    // console.time('initializeCodecs');
    (0, _decodeJPEG.initializeJPEG2000)(decodeConfig);
    (0, _decodeJPEGLS.initializeJPEGLS)(decodeConfig);
    // console.timeEnd('initializeCodecs');
  }
}

/**
 * Task initialization function
 * @param {Object} config The web worker manager `taskConfiguration` field.
 */
function initialize(config) {
  decodeConfig = config[kTaskType] || {};
  if (decodeConfig.loadCodecsOnStartup) {
    loadCodecs();
  }
}

function calculateMinMax(imageFrame) {
  var minMax = (0, _getMinMax2.default)(imageFrame.pixelData);

  if (decodeConfig.strict === true) {
    if (imageFrame.smallestPixelValue !== minMax.min) {
      console.warn('Image smallestPixelValue tag is incorrect. Rendering performance will suffer considerably.');
    }

    if (imageFrame.largestPixelValue !== minMax.max) {
      console.warn('Image largestPixelValue tag is incorrect. Rendering performance will suffer considerably.');
    }
  } else {
    imageFrame.smallestPixelValue = minMax.min;
    imageFrame.largestPixelValue = minMax.max;
  }
}

/**
 * Task handler function
 */
function handler(_ref, doneCallback) {
  var data = _ref.data;

  // Load the codecs if they aren't already loaded
  loadCodecs();

  var imageFrame = data.imageFrame;

  // convert pixel data from ArrayBuffer to Uint8Array since web workers support passing ArrayBuffers but
  // not typed arrays
  var pixelData = new Uint8Array(data.pixelData);

  (0, _decodeImageFrame2.default)(imageFrame, data.transferSyntax, pixelData, decodeConfig, data.options);

  if (!imageFrame.pixelData) {
    throw new Error('decodeTask: imageFrame.pixelData is undefined after decoding');
  }

  calculateMinMax(imageFrame);

  // convert from TypedArray to ArrayBuffer since web workers support passing ArrayBuffers but not
  // typed arrays
  imageFrame.pixelData = imageFrame.pixelData.buffer;

  // invoke the callback with our result and pass the pixelData in the transferList to move it to
  // UI thread without making a copy
  doneCallback(imageFrame, [imageFrame.pixelData]);
}

exports.default = {
  taskType: kTaskType,
  handler: handler,
  initialize: initialize
};

/***/ }),

/***/ 58:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _decodeLittleEndian = __webpack_require__(59);

var _decodeLittleEndian2 = _interopRequireDefault(_decodeLittleEndian);

var _decodeBigEndian = __webpack_require__(60);

var _decodeBigEndian2 = _interopRequireDefault(_decodeBigEndian);

var _decodeRLE = __webpack_require__(61);

var _decodeRLE2 = _interopRequireDefault(_decodeRLE);

var _decodeJPEGBaseline = __webpack_require__(62);

var _decodeJPEGBaseline2 = _interopRequireDefault(_decodeJPEGBaseline);

var _decodeJPEGLossless = __webpack_require__(63);

var _decodeJPEGLossless2 = _interopRequireDefault(_decodeJPEGLossless);

var _decodeJPEGLS = __webpack_require__(38);

var _decodeJPEGLS2 = _interopRequireDefault(_decodeJPEGLS);

var _decodeJPEG = __webpack_require__(37);

var _decodeJPEG2 = _interopRequireDefault(_decodeJPEG);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function decodeImageFrame(imageFrame, transferSyntax, pixelData, decodeConfig, options) {
  var start = new Date().getTime();

  if (transferSyntax === '1.2.840.10008.1.2') {
    // Implicit VR Little Endian
    imageFrame = (0, _decodeLittleEndian2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.1') {
    // Explicit VR Little Endian
    imageFrame = (0, _decodeLittleEndian2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.2') {
    // Explicit VR Big Endian (retired)
    imageFrame = (0, _decodeBigEndian2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.1.99') {
    // Deflate transfer syntax (deflated by dicomParser)
    imageFrame = (0, _decodeLittleEndian2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.5') {
    // RLE Lossless
    imageFrame = (0, _decodeRLE2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.50') {
    // JPEG Baseline lossy process 1 (8 bit)
    imageFrame = (0, _decodeJPEGBaseline2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.51') {
    // JPEG Baseline lossy process 2 & 4 (12 bit)
    imageFrame = (0, _decodeJPEGBaseline2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.57') {
    // JPEG Lossless, Nonhierarchical (Processes 14)
    imageFrame = (0, _decodeJPEGLossless2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.70') {
    // JPEG Lossless, Nonhierarchical (Processes 14 [Selection 1])
    imageFrame = (0, _decodeJPEGLossless2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.80') {
    // JPEG-LS Lossless Image Compression
    imageFrame = (0, _decodeJPEGLS2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.81') {
    // JPEG-LS Lossy (Near-Lossless) Image Compression
    imageFrame = (0, _decodeJPEGLS2.default)(imageFrame, pixelData);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.90') {
    // JPEG 2000 Lossless
    imageFrame = (0, _decodeJPEG2.default)(imageFrame, pixelData, decodeConfig, options);
  } else if (transferSyntax === '1.2.840.10008.1.2.4.91') {
    // JPEG 2000 Lossy
    imageFrame = (0, _decodeJPEG2.default)(imageFrame, pixelData, decodeConfig, options);
  } else {
    throw new Error('no decoder for transfer syntax ' + transferSyntax);
  }

  /* Don't know if these work...
   // JPEG 2000 Part 2 Multicomponent Image Compression (Lossless Only)
   else if(transferSyntax === "1.2.840.10008.1.2.4.92")
   {
   return decodeJPEG2000(dataSet, frame);
   }
   // JPEG 2000 Part 2 Multicomponent Image Compression
   else if(transferSyntax === "1.2.840.10008.1.2.4.93")
   {
   return decodeJPEG2000(dataSet, frame);
   }
   */

  var shouldShift = imageFrame.pixelRepresentation !== undefined && imageFrame.pixelRepresentation === 1;
  var shift = shouldShift && imageFrame.bitsStored !== undefined ? 32 - imageFrame.bitsStored : undefined;

  if (shouldShift && shift !== undefined) {
    for (var i = 0; i < imageFrame.pixelData.length; i++) {
      // eslint-disable-next-line no-bitwise
      imageFrame.pixelData[i] = imageFrame.pixelData[i] << shift >> shift;
    }
  }

  var end = new Date().getTime();

  imageFrame.decodeTimeInMS = end - start;

  return imageFrame;
}

exports.default = decodeImageFrame;

/***/ }),

/***/ 59:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
function decodeLittleEndian(imageFrame, pixelData) {
  var arrayBuffer = pixelData.buffer;
  var offset = pixelData.byteOffset;
  var length = pixelData.length;

  if (imageFrame.bitsAllocated === 16) {
    // if pixel data is not aligned on even boundary, shift it so we can create the 16 bit array
    // buffers on it
    if (offset % 2) {
      arrayBuffer = arrayBuffer.slice(offset);
      offset = 0;
    }

    if (imageFrame.pixelRepresentation === 0) {
      imageFrame.pixelData = new Uint16Array(arrayBuffer, offset, length / 2);
    } else {
      imageFrame.pixelData = new Int16Array(arrayBuffer, offset, length / 2);
    }
  } else if (imageFrame.bitsAllocated === 8 || imageFrame.bitsAllocated === 1) {
    imageFrame.pixelData = pixelData;
  } else if (imageFrame.bitsAllocated === 32) {
    // if pixel data is not aligned on even boundary, shift it
    if (offset % 2) {
      arrayBuffer = arrayBuffer.slice(offset);
      offset = 0;
    }

    imageFrame.pixelData = new Float32Array(arrayBuffer, offset, length / 4);
  }

  return imageFrame;
}

exports.default = decodeLittleEndian;

/***/ }),

/***/ 60:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
/* eslint no-bitwise: 0 */
function swap16(val) {
  return (val & 0xFF) << 8 | val >> 8 & 0xFF;
}

function decodeBigEndian(imageFrame, pixelData) {
  if (imageFrame.bitsAllocated === 16) {
    var arrayBuffer = pixelData.buffer;
    var offset = pixelData.byteOffset;
    var length = pixelData.length;
    // if pixel data is not aligned on even boundary, shift it so we can create the 16 bit array
    // buffers on it

    if (offset % 2) {
      arrayBuffer = arrayBuffer.slice(offset);
      offset = 0;
    }

    if (imageFrame.pixelRepresentation === 0) {
      imageFrame.pixelData = new Uint16Array(arrayBuffer, offset, length / 2);
    } else {
      imageFrame.pixelData = new Int16Array(arrayBuffer, offset, length / 2);
    }
    // Do the byte swap
    for (var i = 0; i < imageFrame.pixelData.length; i++) {
      imageFrame.pixelData[i] = swap16(imageFrame.pixelData[i]);
    }
  } else if (imageFrame.bitsAllocated === 8) {
    imageFrame.pixelData = pixelData;
  }

  return imageFrame;
}

exports.default = decodeBigEndian;

/***/ }),

/***/ 61:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
function decodeRLE(imageFrame, pixelData) {
  if (imageFrame.bitsAllocated === 8) {
    if (imageFrame.planarConfiguration) {
      return decode8Planar(imageFrame, pixelData);
    }

    return decode8(imageFrame, pixelData);
  } else if (imageFrame.bitsAllocated === 16) {
    return decode16(imageFrame, pixelData);
  }

  throw new Error('unsupported pixel format for RLE');
}

function decode8(imageFrame, pixelData) {
  var frameData = pixelData;
  var frameSize = imageFrame.rows * imageFrame.columns;
  var outFrame = new ArrayBuffer(frameSize * imageFrame.samplesPerPixel);
  var header = new DataView(frameData.buffer, frameData.byteOffset);
  var data = new Int8Array(frameData.buffer, frameData.byteOffset);
  var out = new Int8Array(outFrame);

  var outIndex = 0;
  var numSegments = header.getInt32(0, true);

  for (var s = 0; s < numSegments; ++s) {
    outIndex = s;

    var inIndex = header.getInt32((s + 1) * 4, true);
    var maxIndex = header.getInt32((s + 2) * 4, true);

    if (maxIndex === 0) {
      maxIndex = frameData.length;
    }

    var endOfSegment = frameSize * numSegments;

    while (inIndex < maxIndex) {
      var n = data[inIndex++];

      if (n >= 0 && n <= 127) {
        // copy n bytes
        for (var i = 0; i < n + 1 && outIndex < endOfSegment; ++i) {
          out[outIndex] = data[inIndex++];
          outIndex += imageFrame.samplesPerPixel;
        }
      } else if (n <= -1 && n >= -127) {
        var value = data[inIndex++];
        // run of n bytes

        for (var j = 0; j < -n + 1 && outIndex < endOfSegment; ++j) {
          out[outIndex] = value;
          outIndex += imageFrame.samplesPerPixel;
        }
      } /* else if (n === -128) {
        } // do nothing */
    }
  }
  imageFrame.pixelData = new Uint8Array(outFrame);

  return imageFrame;
}

function decode8Planar(imageFrame, pixelData) {
  var frameData = pixelData;
  var frameSize = imageFrame.rows * imageFrame.columns;
  var outFrame = new ArrayBuffer(frameSize * imageFrame.samplesPerPixel);
  var header = new DataView(frameData.buffer, frameData.byteOffset);
  var data = new Int8Array(frameData.buffer, frameData.byteOffset);
  var out = new Int8Array(outFrame);

  var outIndex = 0;
  var numSegments = header.getInt32(0, true);

  for (var s = 0; s < numSegments; ++s) {
    outIndex = s * frameSize;

    var inIndex = header.getInt32((s + 1) * 4, true);
    var maxIndex = header.getInt32((s + 2) * 4, true);

    if (maxIndex === 0) {
      maxIndex = frameData.length;
    }

    var endOfSegment = frameSize * numSegments;

    while (inIndex < maxIndex) {
      var n = data[inIndex++];

      if (n >= 0 && n <= 127) {
        // copy n bytes
        for (var i = 0; i < n + 1 && outIndex < endOfSegment; ++i) {
          out[outIndex] = data[inIndex++];
          outIndex++;
        }
      } else if (n <= -1 && n >= -127) {
        var value = data[inIndex++];
        // run of n bytes

        for (var j = 0; j < -n + 1 && outIndex < endOfSegment; ++j) {
          out[outIndex] = value;
          outIndex++;
        }
      } /* else if (n === -128) {
        } // do nothing */
    }
  }
  imageFrame.pixelData = new Uint8Array(outFrame);

  return imageFrame;
}

function decode16(imageFrame, pixelData) {
  var frameData = pixelData;
  var frameSize = imageFrame.rows * imageFrame.columns;
  var outFrame = new ArrayBuffer(frameSize * imageFrame.samplesPerPixel * 2);

  var header = new DataView(frameData.buffer, frameData.byteOffset);
  var data = new Int8Array(frameData.buffer, frameData.byteOffset);
  var out = new Int8Array(outFrame);

  var numSegments = header.getInt32(0, true);

  for (var s = 0; s < numSegments; ++s) {
    var outIndex = 0;
    var highByte = s === 0 ? 1 : 0;

    var inIndex = header.getInt32((s + 1) * 4, true);
    var maxIndex = header.getInt32((s + 2) * 4, true);

    if (maxIndex === 0) {
      maxIndex = frameData.length;
    }

    while (inIndex < maxIndex) {
      var n = data[inIndex++];

      if (n >= 0 && n <= 127) {
        for (var i = 0; i < n + 1 && outIndex < frameSize; ++i) {
          out[outIndex * 2 + highByte] = data[inIndex++];
          outIndex++;
        }
      } else if (n <= -1 && n >= -127) {
        var value = data[inIndex++];

        for (var j = 0; j < -n + 1 && outIndex < frameSize; ++j) {
          out[outIndex * 2 + highByte] = value;
          outIndex++;
        }
      } /* else if (n === -128) {
        } // do nothing */
    }
  }
  if (imageFrame.pixelRepresentation === 0) {
    imageFrame.pixelData = new Uint16Array(outFrame);
  } else {
    imageFrame.pixelData = new Int16Array(outFrame);
  }

  return imageFrame;
}

exports.default = decodeRLE;

/***/ }),

/***/ 62:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});


function decodeJPEGBaseline(imageFrame, pixelData) {
  // check to make sure codec is loaded
  if (typeof JpegImage === 'undefined') {
    throw new Error('No JPEG Baseline decoder loaded');
  }
  var jpeg = new JpegImage();

  jpeg.parse(pixelData);

  // Do not use the internal jpeg.js color transformation,
  // since we will handle this afterwards
  jpeg.colorTransform = false;

  if (imageFrame.bitsAllocated === 8) {
    imageFrame.pixelData = jpeg.getData(imageFrame.columns, imageFrame.rows);

    return imageFrame;
  } else if (imageFrame.bitsAllocated === 16) {
    imageFrame.pixelData = jpeg.getData16(imageFrame.columns, imageFrame.rows);

    return imageFrame;
  }
}

exports.default = decodeJPEGBaseline;

/***/ }),

/***/ 63:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});


function decodeJPEGLossless(imageFrame, pixelData) {
  // check to make sure codec is loaded
  if (typeof jpeg === 'undefined' || typeof jpeg.lossless === 'undefined' || typeof jpeg.lossless.Decoder === 'undefined') {
    throw new Error('No JPEG Lossless decoder loaded');
  }

  var byteOutput = imageFrame.bitsAllocated <= 8 ? 1 : 2;
  // console.time('jpeglossless');
  var buffer = pixelData.buffer;
  var decoder = new jpeg.lossless.Decoder();
  var decompressedData = decoder.decode(buffer, pixelData.byteOffset, pixelData.length, byteOutput);
  // console.timeEnd('jpeglossless');

  if (imageFrame.pixelRepresentation === 0) {
    if (imageFrame.bitsAllocated === 16) {
      imageFrame.pixelData = new Uint16Array(decompressedData.buffer);

      return imageFrame;
    }
    // untested!
    imageFrame.pixelData = new Uint8Array(decompressedData.buffer);

    return imageFrame;
  }
  imageFrame.pixelData = new Int16Array(decompressedData.buffer);

  return imageFrame;
}

exports.default = decodeJPEGLossless;

/***/ }),

/***/ 9:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = '2.0.0';

/***/ })

/******/ });
});
//# sourceMappingURL=cornerstoneWADOImageLoaderWebWorker.js.map