planning

node_modules/geotiff/dist-module/compression/basedecoder.js

@@ -0,0 +1,20 @@
+import { applyPredictor } from '../predictor.js';
+
+export default class BaseDecoder {
+  async decode(fileDirectory, buffer) {
+    const decoded = await this.decodeBlock(buffer);
+    const predictor = fileDirectory.Predictor || 1;
+    if (predictor !== 1) {
+      const isTiled = !fileDirectory.StripOffsets;
+      const tileWidth = isTiled ? fileDirectory.TileWidth : fileDirectory.ImageWidth;
+      const tileHeight = isTiled ? fileDirectory.TileLength : (
+        fileDirectory.RowsPerStrip || fileDirectory.ImageLength
+      );
+      return applyPredictor(
+        decoded, predictor, tileWidth, tileHeight, fileDirectory.BitsPerSample,
+        fileDirectory.PlanarConfiguration,
+      );
+    }
+    return decoded;
+  }
+}