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);
}
}
}
}
int parse_it8(const char *filename, chart_t *chart)
{
int result = 1;
cmsHANDLE hIT8 = cmsIT8LoadFromFile(NULL, filename);
if(!hIT8)
{
fprintf(stderr, "error loading IT8 file `%s'\n", filename);
goto error;
}
if(cmsIT8TableCount(hIT8) != 1)
{
fprintf(stderr, "error with the IT8 file, we only support files with one table at the moment\n");
goto error;
}
dt_colorspaces_color_profile_type_t color_space = DT_COLORSPACE_NONE;
int column_SAMPLE_ID = -1, column_X = -1, column_Y = -1, column_Z = -1, column_L = -1, column_a = -1,
column_b = -1;
char **sample_names = NULL;
int n_columns = cmsIT8EnumDataFormat(hIT8, &sample_names);
if(n_columns == -1)
{
fprintf(stderr, "error with the IT8 file, can't get column types\n");
goto error;
}
for(int i = 0; i < n_columns; i++)
{
if(!g_strcmp0(sample_names[i], "SAMPLE_ID"))
column_SAMPLE_ID = i;
else if(!g_strcmp0(sample_names[i], "XYZ_X"))
column_X = i;
else if(!g_strcmp0(sample_names[i], "XYZ_Y"))
column_Y = i;
else if(!g_strcmp0(sample_names[i], "XYZ_Z"))
column_Z = i;
else if(!g_strcmp0(sample_names[i], "LAB_L"))
column_L = i;
else if(!g_strcmp0(sample_names[i], "LAB_A"))
column_a = i;
else if(!g_strcmp0(sample_names[i], "LAB_B"))
column_b = i;
}
if(column_SAMPLE_ID == -1)
{
fprintf(stderr, "error with the IT8 file, can't find the SAMPLE_ID column\n");
goto error;
}
char *columns[3] = { 0 };
if(column_X != -1 && column_Y != -1 && column_Z != -1)
{
color_space = DT_COLORSPACE_XYZ;
columns[0] = "XYZ_X";
columns[1] = "XYZ_Y";
columns[2] = "XYZ_Z";
}
else if(column_L != -1 && column_a != -1 && column_b != -1)
{
color_space = DT_COLORSPACE_LAB;
columns[0] = "LAB_L";
columns[1] = "LAB_A";
columns[2] = "LAB_B";
}
else
{
fprintf(stderr, "error with the IT8 file, can't find XYZ or Lab columns\n");
goto error;
}
GHashTableIter table_iter;
gpointer key, value;
g_hash_table_iter_init(&table_iter, chart->box_table);
while(g_hash_table_iter_next(&table_iter, &key, &value))
{
box_t *box = (box_t *)value;
if(cmsIT8GetData(hIT8, key, "SAMPLE_ID") == NULL)
{
fprintf(stderr, "error with the IT8 file, can't find sample `%s'\n", (char *)key);
goto error;
}
set_color(box, color_space, cmsIT8GetDataDbl(hIT8, key, columns[0]), cmsIT8GetDataDbl(hIT8, key, columns[1]),
cmsIT8GetDataDbl(hIT8, key, columns[2]));
}
fprintf(stderr, "it8 `%s' done\n", filename);
goto end;
error:
result = 0;
end:
if(hIT8) cmsIT8Free(hIT8);
return result;
}