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baseparse: Avoid overflow in update_interval calculation

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https://bugzilla.gnome.org/show_bug.cgi?id=793284
This commit is contained in:
Nicolas Dufresne 2018-02-21 22:01:36 -05:00
parent 25aed8c7ff
commit a84b886a7d
1 changed files with 5 additions and 1 deletions
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6
libs/gst/base/gstbaseparse.c
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@ -3860,7 +3860,11 @@ gst_base_parse_set_frame_rate (GstBaseParse * parse, guint fps_num,
gst_util_uint64_scale (GST_SECOND, fps_den * lead_out, fps_num); gst_util_uint64_scale (GST_SECOND, fps_den * lead_out, fps_num);
/* aim for about 1.5s to estimate duration */ /* aim for about 1.5s to estimate duration */
if (parse->priv->update_interval < 0) { if (parse->priv->update_interval < 0) {
parse->priv->update_interval = fps_num * 3 / (fps_den * 2); guint64 interval = gst_util_uint64_scale (fps_num, 3,
G_GUINT64_CONSTANT (2) * fps_den);
parse->priv->update_interval = MIN (interval, G_MAXINT);
GST_LOG_OBJECT (parse, "estimated update interval to %d frames", GST_LOG_OBJECT (parse, "estimated update interval to %d frames",
parse->priv->update_interval); parse->priv->update_interval);
} }