Disable RTL RMS Function on ARM Devices (RPi);

src/dsd_main.c

@@ -1305,6 +1305,12 @@ if (opts->audio_in_type == 1)
 
     open_rtlsdr_stream(opts);
     opts->rtl_started = 1; //set here so ncurses terminal doesn't attempt to open it again
+    #ifdef __arm__
+    fprintf (stderr, "WARNING: RMS Function is Disabled on ARM Devices (Raspberry Pi) due to High CPU use. \n");
+    fprintf (stderr, "RMS/Squelch Functionality for NXDN, dPMR, EDACS Analog, M17 and Raw Audio Monitor are unavailable and these modes will not function properly. \n");
+    if (opts->monitor_input_audio == 1) opts->monitor_input_audio = 0;
+    opts->rtl_squelch_level = 0;
+    #endif
   }
 #endif
 

src/edacs-fme.c

@@ -604,6 +604,11 @@ void edacs(dsd_opts * opts, dsd_state * state)
         else
           fprintf (stderr, " Digital");
 
+        //disable analog calls on RTL Input on ARM devices due to High CPU usage from RTL RMS function
+        #ifdef __arm__
+        if (command == 0xEE && opts->audio_in_type == 3)
+          command = 0;
+        #endif
 
         //this is working now with the new import setup
         if (opts->p25_trunk == 1 && (strcmp(mode, "DE") != 0) && (strcmp(mode, "B") != 0) ) //DE is digital encrypted, B is block

src/rtl_sdr_fm.cpp

@@ -1117,7 +1117,11 @@ void rtl_dev_tune(dsd_opts * opts, long int frequency)
 long int rtl_return_rms()
 {
 	long int sr = 0;
+	#ifdef __arm__
+	sr = 100;
+	#else
 	sr = rms(demod.lowpassed, demod.lp_len, 1);
+	#endif
 	return (sr);
 }