static int
perm_get_color_comp_index(const gx_device *pdev, const char *pname,
int name_size, int component_type)
{
const gx_device_perm_t * const dev = (const gx_device_perm_t *)pdev;
int n_separation_names = dev->num_std_colorant_names;
int i;
for (i = 0; i < n_separation_names; i++) {
const char *sep_name = dev->std_colorant_names[i];
if (compare_color_names(pname, name_size, sep_name, strlen(sep_name)))
return i;
}
return -1;
}
static void
update_Separation_spot_equivalent_cmyk_colors(gx_device * pdev,
const gs_state * pgs, const gs_color_space * pcs,
gs_devn_params * pdevn_params,
equivalent_cmyk_color_params * pparams)
{
int i;
/*
* Check if the color space's separation name matches any of the
* separations for which we need an equivalent CMYK color.
*/
for (i = 0; i < pdevn_params->separations.num_separations; i++) {
if (pparams->color[i].color_info_valid == false) {
const devn_separation_name * dev_sep_name =
&(pdevn_params->separations.names[i]);
unsigned int cs_sep_name_size;
unsigned char * pcs_sep_name;
pcs->params.separation.get_colorname_string
(pdev->memory, pcs->params.separation.sep_name, &pcs_sep_name,
&cs_sep_name_size);
if (compare_color_names(dev_sep_name->data, dev_sep_name->size,
pcs_sep_name, cs_sep_name_size)) {
gs_color_space temp_cs = *pcs;
gs_client_color client_color;
/*
* Create a copy of the color space and then modify it
* to force the use of the alternate color space.
*/
temp_cs.params.separation.use_alt_cspace = true;
client_color.paint.values[0] = 1.0;
capture_spot_equivalent_cmyk_colors(pdev, pgs, &client_color,
&temp_cs, i, pparams);
break;
}
}
}
}
static void
update_DeviceN_spot_equivalent_cmyk_colors(gx_device * pdev,
const gs_state * pgs, const gs_color_space * pcs,
gs_devn_params * pdevn_params,
equivalent_cmyk_color_params * pparams)
{
int i;
unsigned int j;
unsigned int cs_sep_name_size;
unsigned char * pcs_sep_name;
/*
* Check if the color space contains components named 'None'. If so then
* our capture logic does not work properly. When present, the 'None'
* components contain alternate color information. However this info is
* specified as part of the 'color' and not part of the color space. Thus
* we do not have this data when this routine is called. See the
* description of DeviceN color spaces in section 4.5 of the PDF spec.
* In this situation we exit rather than produce invalid values.
*/
for (j = 0; j < pcs->params.device_n.num_components; j++) {
pcs->params.device_n.get_colorname_string
(pdev->memory, pcs->params.device_n.names[j],
&pcs_sep_name, &cs_sep_name_size);
if (compare_color_names("None", 4, pcs_sep_name, cs_sep_name_size))
return;
}
/*
* Check if the color space's separation names matches any of the
* separations for which we need an equivalent CMYK color.
*/
for (i = 0; i < pdevn_params->separations.num_separations; i++) {
if (pparams->color[i].color_info_valid == false) {
const devn_separation_name * dev_sep_name =
&(pdevn_params->separations.names[i]);
for (j = 0; j < pcs->params.device_n.num_components; j++) {
pcs->params.device_n.get_colorname_string
(pdev->memory, pcs->params.device_n.names[j], &pcs_sep_name,
&cs_sep_name_size);
if (compare_color_names(dev_sep_name->data, dev_sep_name->size,
pcs_sep_name, cs_sep_name_size)) {
gs_color_space temp_cs = *pcs;
gs_client_color client_color;
/*
* Create a copy of the color space and then modify it
* to force the use of the alternate color space.
*/
memset(&client_color, 0, sizeof(client_color));
temp_cs.params.device_n.use_alt_cspace = true;
client_color.paint.values[j] = 1.0;
capture_spot_equivalent_cmyk_colors(pdev, pgs, &client_color,
&temp_cs, i, pparams);
break;
}
}
}
}
}
