cmscam97.c

Linux下的无线网卡通用驱动程序

//
//  Little cms
//  Copyright (C) 1998-2005 Marti Maria
//
// Permission is hereby granted, free of charge, to any person obtaining 
// a copy of this software and associated documentation files (the "Software"), 
// to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the Software 
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in 
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


#include "lcms.h"


/*
typedef struct {
               double J;
               double C;
               double h;

               } cmsJCh, FAR* LPcmsJCh;


#define AVG_SURROUND_4     0
#define AVG_SURROUND       1
#define DIM_SURROUND       2
#define DARK_SURROUND      3
#define CUTSHEET_SURROUND  4


typedef struct {

              cmsCIEXYZ whitePoint;
              double    Yb;
              double    La;
              int       surround;
              double    D_value;

              } cmsViewingConditions, FAR* LPcmsViewingConditions;



LCMSAPI LCMSHANDLE LCMSEXPORT cmsCIECAM97sInit(LPcmsViewingConditions pVC);
LCMSAPI void   LCMSEXPORT cmsCIECAM97sDone(LCMSHANDLE hModel);
LCMSAPI void   LCMSEXPORT cmsCIECAM97sForward(LCMSHANDLE hModel, LPcmsCIEXYZ pIn, LPcmsJCh pOut);
LCMSAPI void   LCMSEXPORT cmsCIECAM97sReverse(LCMSHANDLE hModel, LPcmsJCh pIn,    LPcmsCIEXYZ pOut);

*/

// ---------- Implementation --------------------------------------------

// #define USE_CIECAM97s2  1

#ifdef USE_CIECAM97s2

#       define NOISE_CONSTANT   3.05              
#else
#       define NOISE_CONSTANT   2.05
#endif


/*
  The model input data are the adapting field luminance in cd/m2
  (normally taken to be 20% of the luminance of white in the adapting field),
  LA , the relative tristimulus values of the stimulus, XYZ, the relative
  tristimulus values of white in the same viewing conditions, Xw Yw Zw ,
  and the relative luminance of the background, Yb . Relative tristimulus
  values should be expressed on a scale from Y = 0 for a perfect black
  to Y = 100 for a perfect reflecting diffuser. Additionally, the
  parameters c, for the impact of surround, Nc , a chromatic induction factor,
  and F, a factor for degree of adaptation, must be selected according to the
  guidelines in table

  All CIE tristimulus values are obtained using the CIE 1931
  Standard Colorimetric Observer (2