otherlibs/highgui/grfmt_pxm.h

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#ifndef _GRFMT_PxM_H_
#define _GRFMT_PxM_H_

#include "grfmt_base.h"
#include "bitstrm.h"


class GrFmtPxMReader : public GrFmtReader
{
public:
    
    GrFmtPxMReader( const char* filename );
    ~GrFmtPxMReader();
    
    bool  CheckFormat( const char* signature );
    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;
    bool            m_binary;
    int             m_maxval;
};


class GrFmtPxMWriter : public GrFmtWriter
{
public:
    
    GrFmtPxMWriter( const char* filename );
    ~GrFmtPxMWriter();

    bool  IsFormatSupported( int depth );

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

    WLByteStream  m_strm;
};


// PxM filter factory
class GrFmtPxM : public GrFmtFilterFactory
{
public:
    
    GrFmtPxM();
    ~GrFmtPxM();

    GrFmtReader* NewReader( const char* filename );
    GrFmtWriter* NewWriter( const char* filename );
    bool CheckSignature( const char* signature );
};


#endif/*_GRFMT_PxM_H_*/