@cleerlycode/cornerstone-wado-image-loader
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Cornerstone ImageLoader for DICOM WADO-URI
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<h2><a href="index.html">Home</a></h2><h3>Global</h3><ul><li><a href="global.html#addTask">addTask</a></li><li><a href="global.html#arrayBufferToString">arrayBufferToString</a></li><li><a href="global.html#cacheSizeInBytes">cacheSizeInBytes</a></li><li><a href="global.html#cancelTask">cancelTask</a></li><li><a href="global.html#framesAreFragmented">framesAreFragmented</a></li><li><a href="global.html#getNumberString">getNumberString</a></li><li><a href="global.html#getNumberValues">getNumberValues</a></li><li><a href="global.html#getStatistics">getStatistics</a></li><li><a href="global.html#getTransferSyntaxForContentType">getTransferSyntaxForContentType</a></li><li><a href="global.html#getUncompressedImageFrame">getUncompressedImageFrame</a></li><li><a href="global.html#getValue">getValue</a></li><li><a href="global.html#handleMessageFromWorker">handleMessageFromWorker</a></li><li><a href="global.html#handler">handler</a></li><li><a href="global.html#initialize">initialize</a></li><li><a href="global.html#loadCodecs">loadCodecs</a></li><li><a href="global.html#loadWebWorkerTask">loadWebWorkerTask</a></li><li><a href="global.html#registerLoaders">registerLoaders</a></li><li><a href="global.html#registerTaskHandler">registerTaskHandler</a></li><li><a href="global.html#setPixelDataType">setPixelDataType</a></li><li><a href="global.html#setTaskPriority">setTaskPriority</a></li><li><a href="global.html#spawnWebWorker">spawnWebWorker</a></li><li><a href="global.html#startTaskOnWebWorker">startTaskOnWebWorker</a></li><li><a href="global.html#unpackBinaryFrame">unpackBinaryFrame</a></li></ul>
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<h1 class="page-title">imageLoader/wadouri/getEncapsulatedImageFrame.js</h1>
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<pre class="prettyprint source linenums"><code>import { dicomParser } from '../../externalModules.js';
/**
* Function to deal with extracting an image frame from an encapsulated data set.
*/
function framesAreFragmented (dataSet) {
const numberOfFrames = dataSet.intString('x00280008');
const pixelDataElement = dataSet.elements.x7fe00010;
return (numberOfFrames !== pixelDataElement.fragments.length);
}
export default function getEncapsulatedImageFrame (dataSet, frameIndex) {
if (dataSet.elements.x7fe00010 && dataSet.elements.x7fe00010.basicOffsetTable.length) {
// Basic Offset Table is not empty
return dicomParser.readEncapsulatedImageFrame(dataSet, dataSet.elements.x7fe00010, frameIndex);
}
// Empty basic offset table
if (framesAreFragmented(dataSet)) {
const basicOffsetTable = dicomParser.createJPEGBasicOffsetTable(dataSet, dataSet.elements.x7fe00010);
return dicomParser.readEncapsulatedImageFrame(dataSet, dataSet.elements.x7fe00010, frameIndex, basicOffsetTable);
}
return dicomParser.readEncapsulatedPixelDataFromFragments(dataSet, dataSet.elements.x7fe00010, frameIndex);
}
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