Added a freewheeling option to the synth

src/sfizz.h

@@ -324,7 +324,8 @@ int sfizz_get_num_buffers(sfizz_synth_t* synth);
  */
 int sfizz_get_num_bytes(sfizz_synth_t* synth);
 
-
+void sfizz_enable_freewheeling(sfizz_synth_t* synth);
+void sfizz_disable_freewheeling(sfizz_synth_t* synth);
 #ifdef __cplusplus
 }
 #endif

src/sfizz/Synth.cpp

@@ -351,6 +351,9 @@ void sfz::Synth::renderBlock(AudioSpan<float> buffer) noexcept
 
     resources.filePool.cleanupPromises();
 
+    if (freeWheeling)
+        resources.filePool.waitForBackgroundLoading();
+
     AtomicGuard callbackGuard { inCallback };
     if (!canEnterCallback)
         return;

src/sfizz/Synth.h

@@ -324,6 +324,9 @@ public:
      * @return     The allocated bytes.
      */
     int getAllocatedBytes() const noexcept { return Buffer<float>::counter().getTotalBytes(); }
+
+    void enableFreeWheeling() { freeWheeling = true; }
+    void disableFreeWheeling() { freeWheeling = true; }
 protected:
     /**
      * @brief The parser callback; this is called by the parent object each time
@@ -419,6 +422,7 @@ private:
     // Atomic guards; must be used with AtomicGuard and AtomicDisabler
     std::atomic<bool> canEnterCallback { true };
     std::atomic<bool> inCallback { false };
+    bool freeWheeling { false };
 
     // Singletons passed as references to the voices
     Resources resources;

src/sfizz/sfizz_wrapper.cpp

@@ -204,6 +204,18 @@ int sfizz_get_num_bytes(sfizz_synth_t* synth)
     return self->getAllocatedBytes();
 }
 
+void sfizz_enable_freewheeling(sfizz_synth_t* synth)
+{
+    auto self = reinterpret_cast<sfz::Synth*>(synth);
+    self->enableFreeWheeling();
+}
+
+void sfizz_disable_freewheeling(sfizz_synth_t* synth)
+{
+    auto self = reinterpret_cast<sfz::Synth*>(synth);
+    self->enableFreeWheeling();
+}
+
 #ifdef __cplusplus
 }
 #endif