From cbd4450197a083bf58bda510e626f73ba583cb66 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sat, 21 Jul 2018 15:16:18 +0100
Subject: Basics of multiple captions per content so that DCPContent can hold
 subs and closed captions.

---
 src/lib/decoder.cc | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

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

diff --git a/src/lib/decoder.cc b/src/lib/decoder.cc
index 70eb5b61a..2fddddc91 100644
--- a/src/lib/decoder.cc
+++ b/src/lib/decoder.cc
@@ -27,6 +27,7 @@
 
 using std::cout;
 using boost::optional;
+using boost::shared_ptr;
 
 /** @return Earliest time of content that the next pass() will emit */
 ContentTime
@@ -42,8 +43,10 @@ Decoder::position () const
 		pos = audio->position();
 	}
 
-	if (caption && !caption->ignore() && (!pos || caption->position() < *pos)) {
-		pos = caption->position();
+	BOOST_FOREACH (shared_ptr<CaptionDecoder> i, caption) {
+		if (!i->ignore() && (!pos || i->position() < *pos)) {
+			pos = i->position();
+		}
 	}
 
 	return pos.get_value_or(ContentTime());
@@ -58,7 +61,17 @@ Decoder::seek (ContentTime, bool)
 	if (audio) {
 		audio->seek ();
 	}
-	if (caption) {
-		caption->seek ();
+	BOOST_FOREACH (shared_ptr<CaptionDecoder> i, caption) {
+		i->seek ();
 	}
 }
+
+shared_ptr<CaptionDecoder>
+Decoder::only_caption () const
+{
+	DCPOMATIC_ASSERT (caption.size() < 2);
+	if (caption.empty ()) {
+		return shared_ptr<CaptionDecoder> ();
+	}
+	return caption.front ();
+}
-- 
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