pnm.h

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

/* ////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2004-2005 Intel Corporation. All Rights Reserved.
//
//
//
*/

#ifndef __PNM_H__
#define __PNM_H__

#include "imagecore.h"
#include "stricmp.h"

typedef enum
{
    PNM_BIN,
    PNM_TXT
} PNMNumericFormat;

typedef enum
{
    PNM_BLACKNWHITE,
    PNM_GRAYSCALE,
    PNM_COLOR
} PNMColorFormat;

typedef enum
{
    PNM_PBM_TXT = 0x5031,
    PNM_PGM_TXT = 0x5032,
    PNM_PPM_TXT = 0x5033,
    PNM_PBM_BIN = 0x5034,
    PNM_PGM_BIN = 0x5035,
    PNM_PPM_BIN = 0x5036
} PNMMagicNumber;

inline PNMMagicNumber MagicNumber(PNMNumericFormat numFmt, PNMColorFormat clrFmt)
{
    switch(clrFmt)
    {
    case PNM_BLACKNWHITE: return ( (numFmt == PNM_TXT) ? PNM_PBM_TXT : PNM_PBM_BIN );
    case PNM_GRAYSCALE:   return ( (numFmt == PNM_TXT) ? PNM_PGM_TXT : PNM_PGM_BIN );
    case PNM_COLOR:
    default:
                          return ( (numFmt == PNM_TXT) ? PNM_PPM_TXT : PNM_PPM_BIN );
    }
}

inline const char* SpecFileNameExt(PNMColorFormat clrFmt)
{
    switch(clrFmt)
    {
    case PNM_BLACKNWHITE: return "pbm";
    case PNM_GRAYSCALE:   return "pgm";
    case PNM_COLOR:       return "ppm";
    default:              return "pnm";
    }
}

inline PNMColorFormat SpecColorFormat(const char *fileNameExt)
{
    if(!Stricmp(fileNameExt, "pbm")) return PNM_BLACKNWHITE;
    if(!Stricmp(fileNameExt, "pgm")) return PNM_GRAYSCALE;
    return PNM_COLOR;
}


inline PNMNumericFormat NumericFormat(PNMMagicNumber magic)
{
    return ( (magic == PNM_PBM_TXT || magic == PNM_PGM_TXT || magic == PNM_PPM_TXT) ?
        PNM_TXT : PNM_BIN );
}

inline PNMColorFormat ColorFormat(PNMMagicNumber magic)
{
    switch(magic)
    {
    case PNM_PGM_TXT:
    case PNM_PGM_BIN:
        return PNM_GRAYSCALE;
    case PNM_PPM_TXT:
    case PNM_PPM_BIN:
        return PNM_COLOR;
    case PNM_PBM_TXT:
    case PNM_PBM_BIN:
    default:
        return PNM_BLACKNWHITE;
    }
}

inline unsigned int PNMMaxDataValue(unsigned int   bitDepth) { return  (Ipp32u)(((Ipp64u)1 << (bitDepth + 1)) - 1); }
inline unsigned int NOfChannels    (PNMColorFormat clrFmt  ) { return ( (clrFmt == PNM_COLOR) ? 3: 1); };
inline unsigned int NOfChannels    (PNMMagicNumber magic   ) { return NOfChannels(ColorFormat(magic)); }

#endif // __PNM_H__