Fix crash on using content with more than 12 audio channels.

Reported-by: Sumit

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/audio_mapping.cc b/src/lib/audio_mapping.cc
index 28a0fc380..301d44fa6 100644
--- a/src/lib/audio_mapping.cc
+++ b/src/lib/audio_mapping.cc
@@ -28,6 +28,7 @@ using std::cout;
 using std::make_pair;
 using std::pair;
 using std::string;
+using std::min;
 using boost::shared_ptr;
 using boost::lexical_cast;
 using boost::dynamic_pointer_cast;
@@ -71,7 +72,7 @@ AudioMapping::make_default ()
 		set (0, libdcp::CENTRE, 1);
 	} else {
 		/* 1:1 mapping */
-		for (int i = 0; i < _content_channels; ++i) {
+		for (int i = 0; i < min (_content_channels, MAX_DCP_AUDIO_CHANNELS); ++i) {
 			set (i, static_cast<libdcp::Channel> (i), 1);
 		}
 	}