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diff --git a/fxbarcode/datamatrix/BC_Base256Encoder.h b/fxbarcode/datamatrix/BC_Base256Encoder.h
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+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef FXBARCODE_DATAMATRIX_BC_BASE256ENCODER_H_
+#define FXBARCODE_DATAMATRIX_BC_BASE256ENCODER_H_
+
+#include "fxbarcode/datamatrix/BC_Encoder.h"
+
+class CBC_Base256Encoder : public CBC_Encoder {
+ public:
+ CBC_Base256Encoder();
+ ~CBC_Base256Encoder() override;
+
+ // CBC_Encoder
+ int32_t getEncodingMode() override;
+ void Encode(CBC_EncoderContext& context, int32_t& e) override;
+
+ private:
+ static wchar_t randomize255State(wchar_t ch, int32_t codewordPosition);
+};
+
+#endif // FXBARCODE_DATAMATRIX_BC_BASE256ENCODER_H_