static int bchswSampler(register const cmsUInt16Number In[], register cmsUInt16Number Out[], register void* Cargo) { cmsCIELab LabIn, LabOut; cmsCIELCh LChIn, LChOut; cmsCIEXYZ XYZ; LPBCHSWADJUSTS bchsw = (LPBCHSWADJUSTS) Cargo; cmsLabEncoded2Float(&LabIn, In); cmsLab2LCh(&LChIn, &LabIn); // Do some adjusts on LCh LChOut.L = LChIn.L * bchsw ->Contrast + bchsw ->Brightness; LChOut.C = LChIn.C + bchsw -> Saturation; LChOut.h = LChIn.h + bchsw -> Hue; cmsLCh2Lab(&LabOut, &LChOut); // Move white point in Lab cmsLab2XYZ(&bchsw ->WPsrc, &XYZ, &LabOut); cmsXYZ2Lab(&bchsw ->WPdest, &LabOut, &XYZ); // Back to encoded cmsFloat2LabEncoded(Out, &LabOut); return TRUE; }
static int bchswSampler(register WORD In[], register WORD Out[], register LPVOID Cargo) { cmsCIELab LabIn, LabOut; cmsCIELCh LChIn, LChOut; cmsCIEXYZ XYZ; double l; double power; gboolean shift; LPBCHSWADJUSTS bchsw = (LPBCHSWADJUSTS) Cargo; cmsLabEncoded2Float(&LabIn, In); // Move white point in Lab cmsLab2XYZ(&bchsw ->WPsrc, &XYZ, &LabIn); cmsXYZ2Lab(&bchsw ->WPdest, &LabIn, &XYZ); shift = (LabIn.L > 0.5); l = LabIn.L / 100; if (shift) l = 1.0 - l; if (l < 0.0) l = 0.0; if (bchsw->Contrast < 0) power = 1.0 + bchsw->Contrast; else power = (bchsw->Contrast == 1.0) ? 127 : 1.0 / (1.0 - bchsw->Contrast); l = 0.5 * pow (l * 2.0 , power); if (shift) l = 1.0 - l; LabIn.L = l * 100; cmsLab2LCh(&LChIn, &LabIn); // Do some adjusts on LCh LChOut.L = LChIn.L * bchsw ->Exposure + bchsw ->Brightness; LChOut.C = MAX (0, LChIn.C + bchsw ->Saturation); LChOut.h = LChIn.h + bchsw ->Hue; cmsLCh2Lab(&LabOut, &LChOut); // Back to encoded cmsFloat2LabEncoded(Out, &LabOut); return TRUE; }