Make BufferSet::is_silent work so that session silent_buffers are correctly silenced, preventing feedback from occurring with plugins that output non-zero values for zero inputs.

git-svn-id: svn://localhost/ardour2/branches/3.0@6124 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 11 insertions, 0 deletions

diff --git a/libs/ardour/buffer_set.cc b/libs/ardour/buffer_set.cc
index c77db6a683..70f75985f7 100644
--- a/libs/ardour/buffer_set.cc
+++ b/libs/ardour/buffer_set.cc
@@ -335,5 +335,16 @@ BufferSet::silence (nframes_t nframes, nframes_t offset)
 	}
 }
 
+void
+BufferSet::is_silent (bool yn)
+{
+	for (std::vector<BufferVec>::iterator i = _buffers.begin(); i != _buffers.end(); ++i) {
+		for (BufferVec::iterator b = i->begin(); b != i->end(); ++b) {
+			(*b)->is_silent (yn);
+		}
+	}
+		
+}
+
 } // namespace ARDOUR