otherlibs/highgui/grfmt_jpeg2000.h

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#ifndef _GRFMT_JASPER_H_
#define _GRFMT_JASPER_H_

#ifdef HAVE_JASPER

#ifdef WIN32
#define JAS_WIN_MSVC_BUILD 1
#endif

#include <jasper/jasper.h>
// FIXME bad hack
#undef uchar
#undef ulong
#include "grfmt_base.h"


/* libpng version only */

class GrFmtJpeg2000Reader : public GrFmtReader
{
public:

    GrFmtJpeg2000Reader( const char* filename );
    ~GrFmtJpeg2000Reader();

    bool  CheckFormat( const char* signature );
    bool  ReadData( uchar* data, int step, int color );
    bool  ReadHeader();
    void  Close();

protected:
    bool  ReadComponent8u( uchar *data, jas_matrix_t *buffer, int step, int cmpt,
                           int maxval, int offset, int ncmpts );
    bool  ReadComponent16u( unsigned short *data, jas_matrix_t *buffer, int step, int cmpt,
                            int maxval, int offset, int ncmpts );

    jas_stream_t *m_stream;
    jas_image_t  *m_image;
};


class GrFmtJpeg2000Writer : public GrFmtWriter
{
public:

    GrFmtJpeg2000Writer( const char* filename );
    ~GrFmtJpeg2000Writer();

    bool  IsFormatSupported( int depth );
    bool  WriteImage( const uchar* data, int step,
                      int width, int height, int depth, int channels );
protected:
    bool  WriteComponent8u( jas_image_t *img, const uchar *data,
                            int step, int ncmpts, int w, int h );
    bool  WriteComponent16u( jas_image_t *img, const unsigned short *data,
                             int step, int ncmpts, int w, int h );
};


// PNG filter factory
class GrFmtJpeg2000 : public GrFmtFilterFactory
{
public:

    GrFmtJpeg2000();
    ~GrFmtJpeg2000();

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

#endif

#endif/*_GRFMT_JASPER_H_*/