From 65f773f8aad39558b69e8cc73ab4e9bef419496d Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sun, 25 Apr 2021 17:45:38 +0200
Subject: Add Piece::decoder_before().

---
 src/lib/piece.cc  | 41 +++++++++++++++++++++++++----------------
 src/lib/piece.h   |  3 +--
 src/lib/player.cc | 20 ++++----------------
 3 files changed, 30 insertions(+), 34 deletions(-)

diff --git a/src/lib/piece.cc b/src/lib/piece.cc
index 2cdc20a50..54d37f453 100644
--- a/src/lib/piece.cc
+++ b/src/lib/piece.cc
@@ -193,15 +193,6 @@ Piece::decoder_for (shared_ptr<Content> content) const
 }
 
 
-DCPTime
-Piece::decoder_position () const
-{
-	auto t = content_time_to_dcp(_content, std::max(decoder->position(), _content->trim_start()));
-	DCPOMATIC_ASSERT (t);
-	return *t;
-}
-
-
 void
 Piece::pass ()
 {
@@ -218,13 +209,6 @@ Piece::reference_dcp_audio () const
 }
 
 
-bool
-Piece::has_text () const
-{
-	return !decoder->text.empty();
-}
-
-
 void
 Piece::seek (shared_ptr<const Film> film, DCPTime time, bool accurate)
 {
@@ -246,3 +230,28 @@ Piece::seek (shared_ptr<const Film> film, DCPTime time, bool accurate)
 	}
 }
 
+
+optional<dcpomatic::DCPTime>
+Piece::decoder_before(shared_ptr<const Film> film, optional<dcpomatic::DCPTime> time)
+{
+	if (done) {
+		return {};
+	}
+
+	auto t = content_time_to_dcp(_content, std::max(decoder->position(), _content->trim_start()));
+	DCPOMATIC_ASSERT (t);
+
+	if (*t > end(film)) {
+		done = true;
+	} else {
+		/* Given two choices at the same time, pick the one with texts so we see it before
+		   the video.
+		   */
+		if (!time || t < *time || (t == *time && !decoder->text.empty())) {
+			return t;
+		}
+	}
+
+	return {};
+}
+
diff --git a/src/lib/piece.h b/src/lib/piece.h
index 56b16fb28..c567a2f7c 100644
--- a/src/lib/piece.h
+++ b/src/lib/piece.h
@@ -70,9 +70,8 @@ public:
 
 	std::shared_ptr<Decoder> decoder_for (std::shared_ptr<Content> content) const;
 
-	dcpomatic::DCPTime decoder_position () const;
-	bool has_text () const;
 	void seek (std::shared_ptr<const Film> film, dcpomatic::DCPTime time, bool accurate);
+	boost::optional<dcpomatic::DCPTime> decoder_before(std::shared_ptr<const Film> film, boost::optional<dcpomatic::DCPTime> time);
 
 	std::shared_ptr<Decoder> decoder;
 	boost::optional<dcpomatic::DCPTimePeriod> ignore_video;
diff --git a/src/lib/player.cc b/src/lib/player.cc
index 5951e179d..91d429708 100644
--- a/src/lib/player.cc
+++ b/src/lib/player.cc
@@ -598,22 +598,10 @@ Player::pass ()
 	optional<DCPTime> earliest_time;
 
 	for (auto i: _pieces) {
-		if (i->done) {
-			continue;
-		}
-
-		auto const t = i->decoder_position ();
-		if (t > i->end(_film)) {
-			i->done = true;
-		} else {
-
-			/* Given two choices at the same time, pick the one with texts so we see it before
-			   the video.
-			*/
-			if (!earliest_time || t < *earliest_time || (t == *earliest_time && i->has_text())) {
-				earliest_time = t;
-				earliest_content = i;
-			}
+		auto time = i->decoder_before(_film, earliest_time);
+		if (time) {
+			earliest_time = *time;
+			earliest_content = i;
 		}
 	}
 
-- 
cgit v1.2.3