@cleerlycode/cornerstone-wado-image-loader
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Cornerstone ImageLoader for DICOM WADO-URI
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<title>Code coverage report for src/webWorker/decodeTask/decoders/decodeJPEGLossless.js</title>
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<h1>
<a href="../../../../index.html">all files</a> / <a href="index.html">src/webWorker/decodeTask/decoders/</a> decodeJPEGLossless.js
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function decodeJPEGLossless (imageFrame, pixelData) {
// check to make sure codec is loaded
<span class="missing-if-branch" title="if path not taken" >I</span>if (typeof jpeg === 'undefined' ||
typeof jpeg.lossless === 'undefined' ||
typeof jpeg.lossless.Decoder === 'undefined') {
<span class="cstat-no" title="statement not covered" > throw new Error('No JPEG Lossless decoder loaded');</span>
}
const byteOutput = imageFrame.bitsAllocated <= 8 ? <span class="branch-0 cbranch-no" title="branch not covered" >1 </span>: 2;
// console.time('jpeglossless');
const buffer = pixelData.buffer;
const decoder = new jpeg.lossless.Decoder();
const decompressedData = decoder.decode(buffer, pixelData.byteOffset, pixelData.length, byteOutput);
// console.timeEnd('jpeglossless');
<span class="missing-if-branch" title="if path not taken" >I</span>if (imageFrame.pixelRepresentation === 0) {
<span class="cstat-no" title="statement not covered" > if (imageFrame.bitsAllocated === 16) {</span>
<span class="cstat-no" title="statement not covered" > imageFrame.pixelData = new Uint16Array(decompressedData.buffer);</span>
<span class="cstat-no" title="statement not covered" > return imageFrame;</span>
}
// untested!
<span class="cstat-no" title="statement not covered" > imageFrame.pixelData = new Uint8Array(decompressedData.buffer);</span>
<span class="cstat-no" title="statement not covered" > return imageFrame;</span>
}
imageFrame.pixelData = new Int16Array(decompressedData.buffer);
return imageFrame;
}
export default decodeJPEGLossless;
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