1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _BC_GLOBALHISTOGRAMBINARIZER_H_ 8 #define _BC_GLOBALHISTOGRAMBINARIZER_H_ 9 class CBC_CommonBinarizer; 10 class CBC_CommonBitArray; 11 class CBC_CommonBitMatrix; 12 class CBC_LuminanceSource; 13 class CBC_GlobalHistogramBinarizer; 14 class CBC_GlobalHistogramBinarizer : public CBC_Binarizer { 15 public: 16 CBC_GlobalHistogramBinarizer(CBC_LuminanceSource* source); 17 virtual ~CBC_GlobalHistogramBinarizer(); 18 19 void InitArrays(int32_t luminanceSize); 20 CBC_CommonBitMatrix* GetBlackMatrix(int32_t& e); 21 CBC_CommonBitArray* GetBlackRow(int32_t y, 22 CBC_CommonBitArray* row, 23 int32_t& e); 24 static int32_t EstimateBlackPoint(CFX_Int32Array& buckets, int32_t& e); 25 26 private: 27 CFX_ByteArray m_luminance; 28 CFX_Int32Array m_buckets; 29 }; 30 #endif 31
