/*
* Push the current local namespace onto the namespace stack, and reset it
* to an empty namespace.
*/
int
pdf_push_namespace(gx_device_pdf *pdev)
{
int code = cos_array_add_object(pdev->Namespace_stack,
COS_OBJECT(pdev->local_named_objects));
cos_dict_t *pcd =
cos_dict_alloc(pdev, "pdf_push_namespace(local_named_objects)");
cos_array_t *pca =
cos_array_alloc(pdev, "pdf_push_namespace(NI_stack)");
if (code < 0 ||
(code = cos_array_add_object(pdev->Namespace_stack,
COS_OBJECT(pdev->NI_stack))) < 0
)
return code;
if (pcd == 0 || pca == 0)
return_error(gs_error_VMerror);
pdev->local_named_objects = pcd;
pdev->NI_stack = pca;
return 0;
}
/*
* Finish creating a CIE-based color space (Calxxx or Lab.)
* This procedure is exported for gdevpdfk.c.
*/
int
pdf_finish_cie_space(cos_array_t *pca, cos_dict_t *pcd,
const gs_cie_common *pciec)
{
int code = cos_dict_put_c_key_vector3(pcd, "/WhitePoint",
&pciec->points.WhitePoint);
if (code < 0)
return code;
if (pciec->points.BlackPoint.u != 0 ||
pciec->points.BlackPoint.v != 0 ||
pciec->points.BlackPoint.w != 0
) {
code = cos_dict_put_c_key_vector3(pcd, "/BlackPoint",
&pciec->points.BlackPoint);
if (code < 0)
return code;
}
return cos_array_add_object(pca, COS_OBJECT(pcd));
}
/*
* Create an ICCBased color space object (internal). The client must write
* the profile data on *ppcstrm.
*/
static int
pdf_make_iccbased(gx_device_pdf *pdev, cos_array_t *pca, int ncomps,
const gs_range *prange /*[4]*/,
const gs_color_space *pcs_alt,
cos_stream_t **ppcstrm,
const gs_range_t **pprange /* if scaling is needed */)
{
cos_value_t v;
int code;
cos_stream_t * pcstrm = 0;
cos_array_t * prngca = 0;
bool std_ranges = true;
bool scale_inputs = false;
int i;
/* Check the ranges. */
if (pprange)
*pprange = 0;
for (i = 0; i < ncomps; ++i) {
double rmin = prange[i].rmin, rmax = prange[i].rmax;
if (rmin < 0.0 || rmax > 1.0) {
/* We'll have to scale the inputs. :-( */
if (pprange == 0)
return_error(gs_error_rangecheck); /* scaling not allowed */
*pprange = prange;
scale_inputs = true;
}
else if (rmin > 0.0 || rmax < 1.0)
std_ranges = false;
}
/* ICCBased color spaces are essentially copied to the output. */
if ((code = cos_array_add(pca, cos_c_string_value(&v, "/ICCBased"))) < 0)
return code;
/* Create a stream for the output. */
if ((pcstrm = cos_stream_alloc(pdev, "pdf_make_iccbased(stream)")) == 0) {
code = gs_note_error(gs_error_VMerror);
goto fail;
}
/* Indicate the number of components. */
code = cos_dict_put_c_key_int(cos_stream_dict(pcstrm), "/N", ncomps);
if (code < 0)
goto fail;
/* Indicate the range, if needed. */
if (!std_ranges && !scale_inputs) {
code = pdf_cie_add_ranges(cos_stream_dict(pcstrm), prange, ncomps, true);
if (code < 0)
goto fail;
}
/* Output the alternate color space, if necessary. */
switch (gs_color_space_get_index(pcs_alt)) {
case gs_color_space_index_DeviceGray:
case gs_color_space_index_DeviceRGB:
case gs_color_space_index_DeviceCMYK:
break; /* implicit (default) */
default:
if ((code = pdf_color_space(pdev, &v, NULL, pcs_alt,
&pdf_color_space_names, false)) < 0 ||
(code = cos_dict_put_c_key(cos_stream_dict(pcstrm), "/Alternate",
&v)) < 0
)
goto fail;
}
/* Wrap up. */
if ((code = cos_array_add_object(pca, COS_OBJECT(pcstrm))) < 0)
goto fail;
*ppcstrm = pcstrm;
return code;
fail:
if (prngca)
COS_FREE(prngca, "pdf_make_iccbased(Range)");
if (pcstrm)
COS_FREE(pcstrm, "pdf_make_iccbased(stream)");
return code;
}