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Gradienthealth/load dicom from tar file using offsets #21

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Adithyan-Dinesh-Trenser wants to merge 2 commits into
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Gradienthealth/load dicom from tar file using offsets #21

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e0de335
Adding the Range header to the request if FileOffsets are included in…
Adithyan-Dinesh-Trenser Sep 20, 2024
0fc5948
Changed the usage of ExtendedOffsetTable to CustomOffsetTable
Adithyan-Dinesh-Trenser Oct 1, 2024
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11 changes: 10 additions & 1 deletion extensions/cornerstone/src/initWADOImageLoader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ export default function initWADOImageLoader(
use16BitDataType:
Boolean(appConfig.useNorm16Texture) || Boolean(appConfig.preferSizeOverAccuracy),
},
beforeSend: function (xhr) {
beforeSend: function (xhr, imageId) {
//TODO should be removed in the future and request emitted by DicomWebDataSource
const sourceConfig = extensionManager.getActiveDataSource()?.[0].getConfig() ?? {};
const headers = userAuthenticationService.getAuthorizationHeader();
Expand All @@ -70,6 +70,15 @@ export default function initWADOImageLoader(
Object.assign(xhrRequestHeaders, headers);
}

const instance = cornerstone.metaData.get('instance', imageId);
const { CustomOffsetTable, CustomOffsetTableLengths, FileOffsets } = instance;
if (FileOffsets && !(CustomOffsetTable && CustomOffsetTableLengths)) {
// A seperate logic is used if offset tables are present in cornerstone3D.
const { startByte, endByte } = instance.FileOffsets;
const rangeHeader = { Range: `bytes=${startByte}-${endByte}` };
Object.assign(xhrRequestHeaders, rangeHeader);
}

return xhrRequestHeaders;
},
errorInterceptor: error => {
Expand Down