Account for transposer prefill in source coordinates

lib/soundtouch-master/source/SoundTouch/RateTransposer.h

@@ -136,7 +136,8 @@ public:
     AAFilter *getAAFilter();
 
     /// Enables/disables the anti-alias filter. Zero to disable, nonzero to enable
-    int unitySourceOffset() const { return bUseAAFilter ? -1 : pTransposer->unitySourceOffset(); }
+    // clear() добавляет getLatency() нулей: они компенсируют смещение интерполятора.
+    int unitySourceOffset() const { return bUseAAFilter ? -1 : pTransposer->unitySourceOffset() - getLatency(); }
 
     void enableAAFilter(bool newMode);