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#ifndef _GRFMT_BMP_H_
#define _GRFMT_BMP_H_

#include "grfmt_base.hpp"

namespace cv
{

enum BmpCompression
{
    BMP_RGB = 0,
    BMP_RLE8 = 1,
    BMP_RLE4 = 2,
    BMP_BITFIELDS = 3
};


// Windows Bitmap reader
class BmpDecoder CV_FINAL : public BaseImageDecoder
{
public:

    BmpDecoder();
    ~BmpDecoder() CV_OVERRIDE;

    bool  readData( Mat& img ) CV_OVERRIDE;
    bool  readHeader() CV_OVERRIDE;
    void  close();

    ImageDecoder newDecoder() const CV_OVERRIDE;

protected:

    void  initMask();
    void  maskBGRA(uchar* des, uchar* src, int num);

    enum Origin
    {
        ORIGIN_TL = 0,
        ORIGIN_BL = 1
    };

    RLByteStream    m_strm;
    PaletteEntry    m_palette[256];
    Origin          m_origin;
    int             m_bpp;
    int             m_offset;
    BmpCompression  m_rle_code;
    uint            m_rgba_mask[4];
    int             m_rgba_bit_offset[4];
};


// ... writer
class BmpEncoder CV_FINAL : public BaseImageEncoder
{
public:
    BmpEncoder();
    ~BmpEncoder() CV_OVERRIDE;

    bool  write( const Mat& img, const std::vector<int>& params ) CV_OVERRIDE;

    ImageEncoder newEncoder() const CV_OVERRIDE;
};

}

#endif/*_GRFMT_BMP_H_*/