Dynamically getting sample rate from Bela backend

server/scsynth/SC_Bela.cpp

@@ -120,10 +120,12 @@ SC_BelaDriver::~SC_BelaDriver() {
     mBelaDriverInstance = 0;
 }
 
+static float gBelaSampleRate;
 // Return true on success; returning false halts the program.
 bool sc_belaSetup(BelaContext* belaContext, void* userData) {
     // cast void pointer
     // SC_BelaDriver *belaDriver = (SC_BelaDriver*) userData;
+    gBelaSampleRate = belaContext->audioSampleRate;
     return true;
 }
 
@@ -454,7 +456,7 @@ bool SC_BelaDriver::DriverSetup(int* outNumSamples, double* outSampleRate) {
     }
 
     *outNumSamples = settings->periodSize;
-    *outSampleRate = 44100.0; // This is fixed in Bela at the moment
+    *outSampleRate = gBelaSampleRate;
     Bela_InitSettings_free(settings);
 
     // Set up interrupt handler to catch Control-C and SIGTERM