From 3c634dda1e88fe04b0f468f39bd13ea41a80989b Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 13 Dec 2017 22:03:56 +0000
Subject: Reset VideoDecoder::_position on seek.

---
 src/lib/decoder.cc       | 3 +++
 src/lib/video_decoder.cc | 7 +++++++
 src/lib/video_decoder.h  | 2 ++
 3 files changed, 12 insertions(+)

diff --git a/src/lib/decoder.cc b/src/lib/decoder.cc
index 0d4f4babf..502273de1 100644
--- a/src/lib/decoder.cc
+++ b/src/lib/decoder.cc
@@ -52,6 +52,9 @@ Decoder::position () const
 void
 Decoder::seek (ContentTime, bool)
 {
+	if (video) {
+		video->seek ();
+	}
 	if (audio) {
 		audio->seek ();
 	}
diff --git a/src/lib/video_decoder.cc b/src/lib/video_decoder.cc
index dceadcd15..b9ead52c8 100644
--- a/src/lib/video_decoder.cc
+++ b/src/lib/video_decoder.cc
@@ -101,3 +101,10 @@ VideoDecoder::emit (shared_ptr<const ImageProxy> image, Frame frame)
 		_position = ContentTime::from_frames (frame, _content->active_video_frame_rate ());
 	}
 }
+
+void
+VideoDecoder::seek ()
+{
+	_position = ContentTime();
+	_last_emitted.reset ();
+}
diff --git a/src/lib/video_decoder.h b/src/lib/video_decoder.h
index 8b199bd1d..c5e2ea4cf 100644
--- a/src/lib/video_decoder.h
+++ b/src/lib/video_decoder.h
@@ -55,6 +55,8 @@ public:
 		return _position;
 	}
 
+	void seek ();
+
 	void emit (boost::shared_ptr<const ImageProxy>, Frame frame);
 
 	/** @return true if the emitted data was accepted, false if not */
-- 
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