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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 _BC_GLOBALHISTOGRAMBINARIZER_H_
#define _BC_GLOBALHISTOGRAMBINARIZER_H_
class CBC_CommonBinarizer;
class CBC_CommonBitArray;
class CBC_CommonBitMatrix;
class CBC_LuminanceSource;
class CBC_GlobalHistogramBinarizer;
class CBC_GlobalHistogramBinarizer : public CBC_Binarizer {
public:
CBC_GlobalHistogramBinarizer(CBC_LuminanceSource* source);
virtual ~CBC_GlobalHistogramBinarizer();
void InitArrays(int32_t luminanceSize);
CBC_CommonBitMatrix* GetBlackMatrix(int32_t& e);
CBC_CommonBitArray* GetBlackRow(int32_t y,
CBC_CommonBitArray* row,
int32_t& e);
static int32_t EstimateBlackPoint(CFX_Int32Array& buckets, int32_t& e);
private:
CFX_ByteArray m_luminance;
CFX_Int32Array m_buckets;
};
#endif
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