xref: /external/opencv/otherlibs/highgui/grfmt_bmp.h

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#ifndef _GRFMT_BMP_H_
#define _GRFMT_BMP_H_

#include "grfmt_base.h"

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


// Windows Bitmap reader
class GrFmtBmpReader : public GrFmtReader
{
public:

    GrFmtBmpReader( const char* filename );
    ~GrFmtBmpReader();

    bool  ReadData( uchar* data, int step, int color );
    bool  ReadHeader();
    void  Close();

protected:

    RLByteStream    m_strm;
    PaletteEntry    m_palette[256];
    int             m_bpp;
    int             m_offset;
    BmpCompression  m_rle_code;
};


// ... writer
class GrFmtBmpWriter : public GrFmtWriter
{
public:

    GrFmtBmpWriter( const char* filename );
    ~GrFmtBmpWriter();

    bool  WriteImage( const uchar* data, int step,
                      int width, int height, int depth, int channels );
protected:

    WLByteStream  m_strm;
};


// ... and filter factory
class GrFmtBmp : public GrFmtFilterFactory
{
public:

    GrFmtBmp();
    ~GrFmtBmp();

    GrFmtReader* NewReader( const char* filename );
    GrFmtWriter* NewWriter( const char* filename );

};

#endif/*_GRFMT_BMP_H_*/