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//                           License Agreement
//                For Open Source Computer Vision Library
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#ifndef _GRFMT_PxM_H_
#define _GRFMT_PxM_H_

#include "grfmt_base.hpp"
#include "bitstrm.hpp"

namespace cv
{

class PxMDecoder : public BaseImageDecoder
{
public:

    PxMDecoder();
    virtual ~PxMDecoder();

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

    size_t signatureLength() const;
    bool checkSignature( const String& signature ) const;
    ImageDecoder newDecoder() const;

protected:

    RLByteStream    m_strm;
    PaletteEntry    m_palette[256];
    int             m_bpp;
    int             m_offset;
    bool            m_binary;
    int             m_maxval;
};


class PxMEncoder : public BaseImageEncoder
{
public:
    PxMEncoder();
    virtual ~PxMEncoder();

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

    ImageEncoder newEncoder() const;
};

}

#endif/*_GRFMT_PxM_H_*/