--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/textord/linefind.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,60 @@
+///////////////////////////////////////////////////////////////////////
+// File:        linefind.h
+// Description: Class to find vertical lines in an image and create
+//              a corresponding list of empty blobs.
+// Author:      Ray Smith
+//
+// (C) Copyright 2008, Google Inc.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+///////////////////////////////////////////////////////////////////////
+
+#ifndef TESSERACT_TEXTORD_LINEFIND_H_
+#define TESSERACT_TEXTORD_LINEFIND_H_
+
+namespace tesseract {
+
+class TabVector_LIST;
+
+/**
+ * The LineFinder class is a simple static function wrapper class that mainly
+ * exposes the FindVerticalLines function.
+ */
+class LineFinder {
+public:
+  /**
+   * Finds vertical and horizontal line objects in the given pix and removes
+   * them.
+   *
+   * Uses the given resolution to determine size thresholds instead of any
+   * that may be present in the pix.
+   *
+   * The output vertical_x and vertical_y contain a sum of the output vectors,
+   * thereby giving the mean vertical direction.
+   *
+   * If pix_music_mask != nullptr, and music is detected, a mask of the staves
+   * and anything that is connected (bars, notes etc.) will be returned in
+   * pix_music_mask, the mask subtracted from pix, and the lines will not
+   * appear in v_lines or h_lines.
+   *
+   * The output vectors are owned by the list and Frozen (cannot refit) by
+   * having no boxes, as there is no need to refit or merge separator lines.
+   *
+   * The detected lines are removed from the pix.
+   */
+  static void FindAndRemoveLines(int resolution, bool debug, Image pix, int *vertical_x,
+                                 int *vertical_y, Image *pix_music_mask, TabVector_LIST *v_lines,
+                                 TabVector_LIST *h_lines);
+};
+
+} // namespace tesseract.
+
+#endif // TESSERACT_TEXTORD_LINEFIND_H_