X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fblack_decoder.cc;h=beb6bfef385c5b5f5a3c21a67e95d7aece5d845a;hb=5fa669bbfc7392d29c9ec94cf6527c56558fe43f;hp=e8e1a3df2e2ce967bb5ae79d0fcfef16a82e85da;hpb=64a2f1bb6a7b972607fa363631ef7a47444e8217;p=dcpomatic.git

diff --git a/src/lib/black_decoder.cc b/src/lib/black_decoder.cc
index e8e1a3df2..beb6bfef3 100644
--- a/src/lib/black_decoder.cc
+++ b/src/lib/black_decoder.cc
@@ -25,7 +25,8 @@ using boost::shared_ptr;
 
 BlackDecoder::BlackDecoder (shared_ptr<const Film> f, shared_ptr<NullContent> c)
 	: Decoder (f)
-	, VideoDecoder (f, c)
+	, VideoDecoder (f)
+	, _null_content (c)
 {
 
 }
@@ -36,9 +37,9 @@ BlackDecoder::pass ()
 	if (!_image) {
 		_image.reset (new SimpleImage (AV_PIX_FMT_RGB24, video_size(), true));
 		_image->make_black ();
-		video (_image, false, _next_video);
+		video (_image, false, _next_video_frame);
 	} else {
-		video (_image, true, _next_video);
+		video (_image, true, _next_video_frame);
 	}
 }
 
@@ -53,20 +54,28 @@ BlackDecoder::video_frame_rate () const
 	return f->dcp_video_frame_rate ();
 }
 
-ContentVideoFrame
+VideoContent::Frame
 BlackDecoder::video_length () const
 {
-	return _video_content->length() * video_frame_rate() / TIME_HZ;
+	return _null_content->length() * video_frame_rate() / TIME_HZ;
 }
 
-Time
-BlackDecoder::next () const
+void
+BlackDecoder::seek (VideoContent::Frame frame)
 {
-	return _next_video;
+	_next_video_frame = frame;
 }
 
 void
-BlackDecoder::seek (Time t)
+BlackDecoder::seek_back ()
+{
+	if (_next_video_frame > 0) {
+		--_next_video_frame;
+	}
+}
+	
+bool
+BlackDecoder::done () const
 {
-	_next_video = t;
+	return _next_video_frame >= _null_content->video_length ();
 }