fix auditioner by virtualizing Route::input_streams(), since the auditioner never has any inputs

git-svn-id: svn://localhost/ardour2/branches/3.0@8610 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 14 insertions, 0 deletions

diff --git a/libs/ardour/auditioner.cc b/libs/ardour/auditioner.cc
index 209d26dc30..a5db9a21dd 100644
--- a/libs/ardour/auditioner.cc
+++ b/libs/ardour/auditioner.cc
@@ -275,3 +275,17 @@ Auditioner::output_changed (IOChange change, void* /*src*/)
 		}
 	}
 }
+
+ChanCount 
+Auditioner::input_streams () const
+{
+        /* auditioner never has any inputs - its channel configuration
+           depends solely on the region we are auditioning.
+        */
+
+        if (audio_diskstream()) {
+                return audio_diskstream()->n_channels();
+        } 
+
+        return ChanCount ();
+}