// 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(FX_INT32 luminanceSize);
    CBC_CommonBitMatrix *GetBlackMatrix(FX_INT32 &e);
    CBC_CommonBitArray *GetBlackRow(FX_INT32 y, CBC_CommonBitArray *row, FX_INT32 &e);
    static FX_INT32 EstimateBlackPoint(CFX_Int32Array &buckets, FX_INT32 &e);
private:
    CFX_ByteArray m_luminance;
    CFX_Int32Array m_buckets;
};
#endif