--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/classify/protos.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,97 @@
+/******************************************************************************
+ *
+ * File:         protos.h
+ * Author:       Mark Seaman, SW Productivity
+ *
+ * (c) Copyright 1987, Hewlett-Packard Company.
+ ** 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 PROTOS_H
+#define PROTOS_H
+
+#include "bitvec.h"
+#include "params.h"
+#include "unicity_table.h"
+
+#include <tesseract/unichar.h>
+
+namespace tesseract {
+
+struct PROTO_STRUCT {
+  float A;
+  float B;
+  float C;
+  float X;
+  float Y;
+  float Angle;
+  float Length;
+};
+
+struct CLASS_STRUCT {
+  int16_t NumProtos = 0;
+  int16_t MaxNumProtos = 0;
+  int16_t NumConfigs = 0;
+  int16_t MaxNumConfigs = 0;
+  std::vector<PROTO_STRUCT> Prototypes;
+  std::vector<BIT_VECTOR> Configurations;
+  UnicityTable<int> font_set;
+};
+using CLASS_TYPE = CLASS_STRUCT *;
+using CLASSES = CLASS_STRUCT *;
+
+/*----------------------------------------------------------------------
+              M a c r o s
+----------------------------------------------------------------------*/
+/**
+ * AddProtoToConfig
+ *
+ * Set a single proto bit in the specified configuration.
+ */
+
+#define AddProtoToConfig(Pid, Config) (SET_BIT(Config, Pid))
+
+/**
+ * ProtoIn
+ *
+ * Choose the selected prototype in this class record.  Return the
+ * pointer to it (PROTO_STRUCT *).
+ */
+
+#define ProtoIn(Class, Pid) (&(Class)->Prototypes[Pid])
+
+/*----------------------------------------------------------------------
+              F u n c t i o n s
+----------------------------------------------------------------------*/
+TESS_API
+int AddConfigToClass(CLASS_TYPE Class);
+
+TESS_API
+int AddProtoToClass(CLASS_TYPE Class);
+
+TESS_API
+void FillABC(PROTO_STRUCT *Proto);
+
+TESS_API
+void FreeClass(CLASS_TYPE Class);
+
+TESS_API
+void FreeClassFields(CLASS_TYPE Class);
+
+void InitPrototypes();
+
+TESS_API
+CLASS_TYPE NewClass(int NumProtos, int NumConfigs);
+
+} // namespace tesseract
+
+#endif