add "no-inplace" buffers.

When allowing to cross-connect plugin-ports, inplace processing can
no longer be used. We need a complete set of independent input and
output buffers.

Since scratch and silent buffers are used by the various plugin
implementations we cannot re-use them in the PluginInsert.
Besides we need a complete BufferSet which can hold both: ins + outs.

1 files changed, 19 insertions, 0 deletions

diff --git a/libs/ardour/process_thread.cc b/libs/ardour/process_thread.cc
index cf48c50c70..efcc47fee3 100644
--- a/libs/ardour/process_thread.cc
+++ b/libs/ardour/process_thread.cc
@@ -117,6 +117,25 @@ ProcessThread::get_scratch_buffers (ChanCount count, bool silence)
 }
 
 BufferSet&
+ProcessThread::get_noinplace_buffers (ChanCount count)
+{
+	ThreadBuffers* tb = _private_thread_buffers.get();
+	assert (tb);
+
+	BufferSet* sb = tb->noinplace_buffers;
+	assert (sb);
+
+	if (count != ChanCount::ZERO) {
+		assert(sb->available() >= count);
+		sb->set_count (count);
+	} else {
+		sb->set_count (sb->available());
+	}
+
+	return *sb;
+}
+
+BufferSet&
 ProcessThread::get_route_buffers (ChanCount count, bool silence)
 {
 	ThreadBuffers* tb = _private_thread_buffers.get();