first pass at full output & gain coefficient interpolation for VBAP panning

git-svn-id: svn://localhost/ardour2/branches/3.0@8902 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 7 insertions, 5 deletions

diff --git a/libs/panners/vbap/vbap.h b/libs/panners/vbap/vbap.h
index 7aa136ac78..6174600270 100644
--- a/libs/panners/vbap/vbap.h
+++ b/libs/panners/vbap/vbap.h
@@ -68,12 +68,14 @@ public:
 private:
         struct Signal {
             PBD::AngularVector direction;
-            double gains[3];
-            double desired_gains[3];
-            int    outputs[3];
-            int    desired_outputs[3];
+            std::vector<double> gains; /* most recently used gain for all speakers */
 
-            Signal (Session&, VBAPanner&, uint32_t which);
+            int outputs[3];  /* most recent set of outputs used (2 or 3, depending on dimension) */
+            int desired_outputs[3]; /* outputs to use the next time we distribute */
+            double desired_gains[3]; /* target gains for desired_outputs */
+
+            Signal (Session&, VBAPanner&, uint32_t which, uint32_t n_speakers);
+            void resize_gains (uint32_t n_speakers);
         };
 
         std::vector<Signal*> _signals;