init

nv/html/dwv/decoders/rii-mango/decode-jpegloss.js

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+/**
+ * JPEG Lossless decoder worker.
+ */
+// Do not warn if these variables were not defined before.
+/* global importScripts, self, jpeg */
+
+importScripts('lossless-min.js'); 
+
+self.addEventListener('message', function (event) {
+    
+    // bytes per element
+    var bpe = event.data.bitsAllocated / 8;
+    // decode DICOM buffer
+    var buf = new Uint8Array(event.data.buffer);
+    var decoder = new jpeg.lossless.Decoder();
+    var decoded = decoder.decode(buf.buffer, 0, buf.buffer.byteLength, bpe);
+    // post decoded data
+    var res = null;
+    if (event.data.bitsAllocated === 8) {
+        if (event.data.isSigned) {
+            res = new Int8Array(decoded.buffer);
+        }
+        else {
+            res = new Uint8Array(decoded.buffer);
+        }
+    }
+    else if (event.data.bitsAllocated === 16) {
+        if (event.data.isSigned) {
+            res = new Int16Array(decoded.buffer);
+        }
+        else {
+            res = new Uint16Array(decoded.buffer);
+        }
+    }
+    self.postMessage([res]);
+    
+}, false);