demux_subreader: reject file if not opened by --sub

demux_subreader.c contains the old MPlayer subtitle parser, and I have
absolutely no confidence in this (very crappy) code. There might be
one or two security risks associated with running that code on
arbitrary input.

1 files changed, 1 insertions, 0 deletions

diff --git a/demux/demux.h b/demux/demux.h
index 7a663684f9..6f9437f2d3 100644
--- a/demux/demux.h
+++ b/demux/demux.h
@@ -152,6 +152,7 @@ struct demuxer_params {
     int matroska_wanted_segment;
     bool *matroska_was_valid;
     struct ass_library *ass_library;
+    bool expect_subtitle;
 };
 
 typedef struct demuxer {