Initial commit

node_modules/@maplibre/mlt/dist/decoding/fsstDecoder.js

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+/**
+ * Decode FSST compressed data
+ *
+ * @param symbols           Array of symbols, where each symbol can be between 1 and 8 bytes
+ * @param symbolLengths     Array of symbol lengths, length of each symbol in symbols array
+ * @param compressedData    FSST Compressed data, where each entry is an index to the symbols array
+ * @returns                 Decoded data as Uint8Array
+ */
+//TODO: improve -> quick and dirty implementation
+export function decodeFsst(symbols, symbolLengths, compressedData) {
+    //TODO: use typed array directly
+    const decodedData = [];
+    const symbolOffsets = new Array(symbolLengths.length).fill(0);
+    for (let i = 1; i < symbolLengths.length; i++) {
+        symbolOffsets[i] = symbolOffsets[i - 1] + symbolLengths[i - 1];
+    }
+    for (let i = 0; i < compressedData.length; i++) {
+        if (compressedData[i] === 255) {
+            decodedData.push(compressedData[++i]);
+        }
+        else {
+            const symbolLength = symbolLengths[compressedData[i]];
+            const symbolOffset = symbolOffsets[compressedData[i]];
+            for (let j = 0; j < symbolLength; j++) {
+                decodedData.push(symbols[symbolOffset + j]);
+            }
+        }
+    }
+    return new Uint8Array(decodedData);
+}
+//# sourceMappingURL=fsstDecoder.js.map