int
gscms_transform_named_color(gsicc_link_t *icclink, float tint_value,
const char* ColorName, gx_color_value device_values[] )
{
cmsHPROFILE hTransform = icclink->link_handle;
unsigned short *deviceptr = device_values;
int index;
/* Check if name is present in the profile */
/* If it is not return -1. Caller will need to use an alternate method */
if((index = cmsNamedColorIndex(hTransform, ColorName)) < 0) return -1;
/* Get the device value. */
cmsDoTransform(hTransform,&index,deviceptr,1);
return(0);
}
static
void TakeCGATSValues(int nPatch, cmsFloat64Number Float[])
{
// At first take the name if SAMPLE_ID is present
if (cmsIT8GetPatchName(hIT8in, nPatch, CGATSPatch) == NULL) {
FatalError("Sorry, I need 'SAMPLE_ID' on input CGATS to operate.");
}
// Special handling for named color profiles.
// Lookup the name in the names database (the transform)
if (InputNamedColor) {
const cmsNAMEDCOLORLIST* NamedColorList;
int index;
NamedColorList = cmsGetNamedColorList(hTrans);
if (NamedColorList == NULL)
FatalError("Malformed named color profile");
index = cmsNamedColorIndex(NamedColorList, CGATSPatch);
if (index < 0)
FatalError("Named color '%s' not found in the profile", CGATSPatch);
Float[0] = index;
return;
}
// Color is not a spot color, proceed.
switch (InputColorSpace) {
// Encoding should follow CGATS specification.
case cmsSigXYZData:
Float[0] = cmsIT8GetDataDbl(hIT8in, CGATSPatch, "XYZ_X") / 100.0;
Float[1] = cmsIT8GetDataDbl(hIT8in, CGATSPatch, "XYZ_Y") / 100.0;
Float[2] = cmsIT8GetDataDbl(hIT8in, CGATSPatch, "XYZ_Z") / 100.0;
break;
case cmsSigLabData:
Float[0] = cmsIT8GetDataDbl(hIT8in, CGATSPatch, "LAB_L");
Float[1] = cmsIT8GetDataDbl(hIT8in, CGATSPatch, "LAB_A");
Float[2] = cmsIT8GetDataDbl(hIT8in, CGATSPatch, "LAB_B");
break;
case cmsSigRgbData:
Float[0] = GetIT8Val("RGB_R", 255.0);
Float[1] = GetIT8Val("RGB_G", 255.0);
Float[2] = GetIT8Val("RGB_B", 255.0);
break;
case cmsSigGrayData:
Float[0] = GetIT8Val("GRAY", 255.0);
break;
case cmsSigCmykData:
Float[0] = GetIT8Val("CMYK_C", 1.0);
Float[1] = GetIT8Val("CMYK_M", 1.0);
Float[2] = GetIT8Val("CMYK_Y", 1.0);
Float[3] = GetIT8Val("CMYK_K", 1.0);
break;
case cmsSigCmyData:
Float[0] = GetIT8Val("CMY_C", 1.0);
Float[1] = GetIT8Val("CMY_M", 1.0);
Float[2] = GetIT8Val("CMY_Y", 1.0);
break;
case cmsSig1colorData:
case cmsSig2colorData:
case cmsSig3colorData:
case cmsSig4colorData:
case cmsSig5colorData:
case cmsSig6colorData:
case cmsSig7colorData:
case cmsSig8colorData:
case cmsSig9colorData:
case cmsSig10colorData:
case cmsSig11colorData:
case cmsSig12colorData:
case cmsSig13colorData:
case cmsSig14colorData:
case cmsSig15colorData:
{
cmsUInt32Number i, n;
n = cmsChannelsOf(InputColorSpace);
for (i=0; i < n; i++) {
char Buffer[255];
sprintf(Buffer, "%uCLR_%u", n, i+1);
Float[i] = GetIT8Val(Buffer, 100.0);
}
}
break;
default:
{
cmsUInt32Number i, n;
n = cmsChannelsOf(InputColorSpace);
for (i=0; i < n; i++) {
char Buffer[255];
sprintf(Buffer, "CHAN_%u", i+1);
Float[i] = GetIT8Val(Buffer, 1.0);
}
}
}
}
