Catch bad calls to ::get().

diff --git a/src/lib/audio_mapping.cc b/src/lib/audio_mapping.cc
index 4e2e29363516f6a8b1bcb52772799de022ee0e32..906e79bd89b089a777d8c727fd42c886f066c69a 100644 (file)
--- a/src/lib/audio_mapping.cc
+++ b/src/lib/audio_mapping.cc
@@ -119,6 +119,8 @@ AudioMapping::set (int input_channel, int output_channel, float g)
 float
 AudioMapping::get (int input_channel, int output_channel) const
 {
+       DCPOMATIC_ASSERT (input_channel < int (_gain.size()));
+       DCPOMATIC_ASSERT (output_channel < int (_gain[0].size()));
        return _gain[input_channel][output_channel];
 }