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diff --git a/xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.h b/xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.h
new file mode 100644
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+++ b/xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.h
@@ -0,0 +1,78 @@
+// 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 XFA_FXBARCODE_DATAMATRIX_BC_DATAMATRIXDETECTOR_H_
+#define XFA_FXBARCODE_DATAMATRIX_BC_DATAMATRIXDETECTOR_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+
+class CBC_CommonBitMatrix;
+class CBC_WhiteRectangleDetector;
+class CBC_ResultPoint;
+class CBC_QRDetectorResult;
+class CBC_DataMatrixDetector;
+class ResultPointsAndTransitions;
+class CBC_ResultPointsAndTransitions {
+ public:
+  CBC_ResultPointsAndTransitions(CBC_ResultPoint* from,
+                                 CBC_ResultPoint* to,
+                                 int32_t transitions) {
+    m_from = from;
+    m_to = to;
+    m_transitions = transitions;
+  }
+  ~CBC_ResultPointsAndTransitions() {}
+  CBC_ResultPoint* GetFrom() { return m_from; }
+  CBC_ResultPoint* GetTo() { return m_to; }
+  int32_t GetTransitions() { return m_transitions; }
+
+ private:
+  CBC_ResultPoint* m_from;
+  CBC_ResultPoint* m_to;
+  int32_t m_transitions;
+};
+class CBC_DataMatrixDetector {
+ public:
+  CBC_DataMatrixDetector(CBC_CommonBitMatrix* image);
+  virtual ~CBC_DataMatrixDetector();
+  CBC_QRDetectorResult* Detect(int32_t& e);
+  CBC_ResultPoint* CorrectTopRightRectangular(CBC_ResultPoint* bottomLeft,
+                                              CBC_ResultPoint* bottomRight,
+                                              CBC_ResultPoint* topLeft,
+                                              CBC_ResultPoint* topRight,
+                                              int32_t dimensionTop,
+                                              int32_t dimensionRight);
+  CBC_ResultPoint* CorrectTopRight(CBC_ResultPoint* bottomLeft,
+                                   CBC_ResultPoint* bottomRight,
+                                   CBC_ResultPoint* topLeft,
+                                   CBC_ResultPoint* topRight,
+                                   int32_t dimension);
+  CBC_CommonBitMatrix* SampleGrid(CBC_CommonBitMatrix* image,
+                                  CBC_ResultPoint* topLeft,
+                                  CBC_ResultPoint* bottomLeft,
+                                  CBC_ResultPoint* bottomRight,
+                                  CBC_ResultPoint* topRight,
+                                  int32_t dimensionX,
+                                  int32_t dimensionY,
+                                  int32_t& e);
+  CBC_ResultPointsAndTransitions* TransitionsBetween(CBC_ResultPoint* from,
+                                                     CBC_ResultPoint* to);
+  FX_BOOL IsValid(CBC_ResultPoint* p);
+  int32_t Distance(CBC_ResultPoint* a, CBC_ResultPoint* b);
+  void Increment(CFX_MapPtrTemplate<CBC_ResultPoint*, int32_t>& table,
+                 CBC_ResultPoint* key);
+  int32_t Round(FX_FLOAT d);
+  void OrderBestPatterns(CFX_PtrArray* patterns);
+  virtual void Init(int32_t& e);
+
+ private:
+  static const int32_t INTEGERS[5];
+
+  CBC_CommonBitMatrix* m_image;
+  CBC_WhiteRectangleDetector* m_rectangleDetector;
+};
+
+#endif  // XFA_FXBARCODE_DATAMATRIX_BC_DATAMATRIXDETECTOR_H_