1 files changed, 102 insertions, 0 deletions
diff --git a/mupdf/pdf_xobject.c b/mupdf/pdf_xobject.c
new file mode 100644
index 00000000..473a1485
--- /dev/null
+++ b/mupdf/pdf_xobject.c
@@ -0,0 +1,102 @@
+#include <fitz.h>
+#include <mupdf.h>
+
+fz_error *
+pdf_loadxobject(pdf_xobject **formp, pdf_xref *xref, fz_obj *dict, fz_obj *ref)
+{
+	fz_error *error;
+	pdf_xobject *form;
+	fz_obj *obj;
+
+	if ((*formp = pdf_finditem(xref->store, PDF_KXOBJECT, ref)))
+	{
+		pdf_keepxobject(*formp);
+		return nil;
+	}
+
+	form = fz_malloc(sizeof(pdf_xobject));
+	if (!form)
+		return fz_outofmem;
+
+	form->refs = 1;
+	form->resources = nil;
+	form->contents = nil;
+
+	pdf_logrsrc("load xobject %d %d (%p) {\n", fz_tonum(ref), fz_togen(ref), form);
+
+	obj = fz_dictgets(dict, "BBox");
+	form->bbox = pdf_torect(obj);
+
+	pdf_logrsrc("bbox [%g %g %g %g]\n",
+		form->bbox.min.x, form->bbox.min.y,
+		form->bbox.max.x, form->bbox.max.y);
+
+	obj = fz_dictgets(dict, "Matrix");
+	if (obj)
+		form->matrix = pdf_tomatrix(obj);
+	else
+		form->matrix = fz_identity();
+
+	pdf_logrsrc("matrix [%g %g %g %g %g %g]\n",
+		form->matrix.a, form->matrix.b,
+		form->matrix.c, form->matrix.d,
+		form->matrix.e, form->matrix.f);
+
+	obj = fz_dictgets(dict, "Resources");
+	if (obj)
+	{
+		error = pdf_resolve(&obj, xref);
+		if (error)
+		{
+			pdf_dropxobject(form);
+			return error;
+		}
+		error = pdf_loadresources(&form->resources, xref, obj);
+		fz_dropobj(obj);
+		if (error)
+		{
+			pdf_dropxobject(form);
+			return error;
+		}
+	}
+
+	error = pdf_loadstream(&form->contents, xref, fz_tonum(ref), fz_togen(ref));
+	if (error)
+	{
+		pdf_dropxobject(form);
+		return error;
+	}
+
+	pdf_logrsrc("stream %d bytes\n", form->contents->wp - form->contents->rp);
+
+	pdf_logrsrc("}\n");
+
+	error = pdf_storeitem(xref->store, PDF_KXOBJECT, ref, form);
+	if (error)
+	{
+		pdf_dropxobject(form);
+		return error;
+	}
+
+	*formp = form;
+	return nil;
+}
+
+pdf_xobject *
+pdf_keepxobject(pdf_xobject *xobj)
+{
+	xobj->refs ++;
+	return xobj;
+}
+
+void
+pdf_dropxobject(pdf_xobject *xobj)
+{
+	if (--xobj->refs == 0)
+	{
+		if (xobj->contents) fz_dropbuffer(xobj->contents);
+		if (xobj->resources) fz_dropobj(xobj->resources);
+		fz_free(xobj);
+	}
+}
+