X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdelay_line.cc;h=f6af6f9b12a2b51e1bdad65ffe9b5590f1ed101d;hb=23945ac9d84e2f77a08591604ec1244535548147;hp=9e6baeba8131f0ebe671f0b9d3112466bfe1e5f8;hpb=bd58b201c3e45b44e804ce040cac9e6a8c26736e;p=dcpomatic.git

diff --git a/src/lib/delay_line.cc b/src/lib/delay_line.cc
index 9e6baeba8..f6af6f9b1 100644
--- a/src/lib/delay_line.cc
+++ b/src/lib/delay_line.cc
@@ -37,7 +37,7 @@ DelayLine::DelayLine (shared_ptr<Log> log, double seconds)
 }
 
 void
-DelayLine::process_audio (shared_ptr<AudioBuffers> data, double t)
+DelayLine::process_audio (shared_ptr<const AudioBuffers> data, double t)
 {
 	if (_seconds > 0) {
 		t += _seconds;
@@ -47,10 +47,10 @@ DelayLine::process_audio (shared_ptr<AudioBuffers> data, double t)
 }
 
 void
-DelayLine::process_video (boost::shared_ptr<Image> image, bool same, boost::shared_ptr<Subtitle> sub, double t)
+DelayLine::process_video (shared_ptr<const Image> image, bool same, boost::shared_ptr<Subtitle> sub, double t)
 {
 	if (_seconds < 0) {
-		t += _seconds;
+		t -= _seconds;
 	}
 
 	Video (image, same, sub, t);