add_fonts_from_examiner() can be called multiple times with the same font

[dcpomatic.git] / src / lib / dcp_content.cc

diff --git a/src/lib/dcp_content.cc b/src/lib/dcp_content.cc
index cad775b24854b9c79aba7448570c11a70edd99ce..7d835e618f1ecdfe2185f57863fea40093d7144d 100644 (file)
--- a/src/lib/dcp_content.cc
+++ b/src/lib/dcp_content.cc
@@ -831,8 +831,9 @@ add_fonts_from_examiner(shared_ptr<TextContent> text, vector<vector<shared_ptr<F
                         * by prepending the reel number.  We do the same disambiguation when emitting the
                         * subtitles in the DCP decoder.
                         */
-                       font->set_id(id_for_font_in_reel(font->id(), reel_number));
-                       text->add_font(font);
+                       auto font_copy = make_shared<dcpomatic::Font>(*font);
+                       font_copy->set_id(id_for_font_in_reel(font->id(), reel_number));
+                       text->add_font(font_copy);
                }
                ++reel_number;
        }