Pango and non-system fonts

["Mike Branciforte" <branciforte m gmail com>]

We are exploring the possibility of using Cairo+Pango to render pages
from a PDF document. Does Pango have an API for specifying fonts that
are not installed in the runtime system? For example, PDF documents
often contain embedded fonts. We can programmatically extract the
embedded font from a PDF document. How can we use this font to render
text with Pango? It appears to us that the Pango API only allows the
client application to specify fonts that are installed on the system.