Added an API to access the memory usage

src/sfizz.h

@@ -305,6 +305,26 @@ void sfizz_set_num_voices(sfizz_synth_t* synth, int num_voices);
  */
 int sfizz_get_num_voices(sfizz_synth_t* synth);
 
+/**
+ * @brief      Get the number of allocated buffers from the synth.
+ *
+ * @param      synth  The synth
+ *
+ * @return     The number of buffers held by the synth
+ */
+int sfizz_get_num_buffers(sfizz_synth_t* synth);
+/**
+ * @brief      Get the number of bytes allocated from the synth. Note that this
+ *             value can be less than the actual memory usage since it only
+ *             counts the buffer objects managed by sfizz.
+ *
+ * @param      synth  The synth
+ *
+ * @return     The number of bytes held by the synth in buffers;
+ */
+int sfizz_get_num_bytes(sfizz_synth_t* synth);
+
+
 #ifdef __cplusplus
 }
 #endif

src/sfizz/Synth.h

@@ -310,6 +310,20 @@ public:
      * @return Oversampling
      */
     uint32_t getPreloadSize() const noexcept;
+
+    /**
+     * @brief      Gets the number of allocated buffers.
+     *
+     * @return     The allocated buffers.
+     */
+    int getAllocatedBuffers() const noexcept { return Buffer<float>::counter().getNumBuffers(); }
+
+    /**
+     * @brief      Gets the number of bytes allocated through the buffers
+     *
+     * @return     The allocated bytes.
+     */
+    int getAllocatedBytes() const noexcept { return Buffer<float>::counter().getTotalBytes(); }
 protected:
     /**
      * @brief The parser callback; this is called by the parent object each time

src/sfizz/sfizz_wrapper.cpp

@@ -192,6 +192,18 @@ int sfizz_get_num_voices(sfizz_synth_t* synth)
     return self->getNumVoices();
 }
 
+int sfizz_get_num_buffers(sfizz_synth_t* synth)
+{
+    auto self = reinterpret_cast<sfz::Synth*>(synth);
+    return self->getAllocatedBuffers();
+}
+
+int sfizz_get_num_bytes(sfizz_synth_t* synth)
+{
+    auto self = reinterpret_cast<sfz::Synth*>(synth);
+    return self->getAllocatedBytes();
+}
+
 #ifdef __cplusplus
 }
 #endif