fix crash when copy'ing latent plugins

[ardour.git] / libs / ardour / engine_slave.cc

diff --git a/libs/ardour/engine_slave.cc b/libs/ardour/engine_slave.cc
index eb55c9ba540dc51e1a445d20723e6e5f5a550f62..8b7c3ba510512bf7eb8a031672d28a285ec971a6 100644 (file)
--- a/libs/ardour/engine_slave.cc
+++ b/libs/ardour/engine_slave.cc
@@ -21,6 +21,7 @@
 #include <cerrno>
 
 #include "ardour/audioengine.h"
+#include "ardour/audio_backend.h"
 #include "ardour/slave.h"
 
 using namespace std;
@@ -54,26 +55,13 @@ Engine_Slave::ok() const
 bool
 Engine_Slave::speed_and_position (double& sp, framepos_t& position)
 {
-       switch (engine.transport_state()) {
-       case TransportStopped:
-               speed = 0;
-               _starting = false;
-               break;
-       case TransportRolling:
-               speed = 1.0;
-               _starting = false;
-               break;
-       case TransportLooping:
-               speed = 1.0;
+       boost::shared_ptr<AudioBackend> backend = engine.current_backend();
+
+       if (backend) {
+               _starting = backend->speed_and_position (sp, position);
+       } else {
                _starting = false;
-               break;
-       case TransportStarting:
-               _starting = true;
-               // don't adjust speed here, just leave it as it was
-               break;
        }
 
-       sp = speed;
-       position = engine.transport_frame();
        return true;
 }