From 4447fc2edd80d85c9779187e4f3a0405e6e4d443 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 13 May 2015 10:23:44 +0100
Subject: Don't allow image subtitle store to get too big.

---
 src/lib/subtitle_decoder.cc | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'src/lib/subtitle_decoder.cc')

diff --git a/src/lib/subtitle_decoder.cc b/src/lib/subtitle_decoder.cc
index edb291ab8..2efe9afb6 100644
--- a/src/lib/subtitle_decoder.cc
+++ b/src/lib/subtitle_decoder.cc
@@ -82,7 +82,22 @@ SubtitleDecoder::get (list<T> const & subs, list<ContentTimePeriod> const & sp,
 		}
 	}
 
-	/* XXX: should clear out _decoded_* at some point */
+	/* Discard anything in _decoded_image_subtitles that is outside 5 seconds either side of period */
+	
+	list<ContentImageSubtitle>::iterator i = _decoded_image_subtitles.begin();
+	while (i != _decoded_image_subtitles.end()) {
+		list<ContentImageSubtitle>::iterator tmp = i;
+		++tmp;
+
+		if (
+			i->period().to < (period.from - ContentTime::from_seconds (5)) ||
+			i->period().from > (period.to + ContentTime::from_seconds (5))
+			) {
+			_decoded_image_subtitles.erase (i);
+		}
+
+		i = tmp;
+	}
 
 	return out;
 }
-- 
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