disable rds symbol diagram data stream when not visible

Author: AlexandreRouma

decoder_modules/radio/src/demodulators/wfm.h

@@ -47,7 +47,7 @@ namespace demod {
 
             // Init DSP
             demod.init(input, bandwidth / 2.0f, getIFSampleRate(), _stereo, _lowPass, _rds);
-            rdsDemod.init(&demod.rdsOut);
+            rdsDemod.init(&demod.rdsOut, _rdsInfo);
             hs.init(&rdsDemod.out, rdsHandler, this);
             reshape.init(&rdsDemod.soft, 4096, (1187 / 30) - 4096);
             diagHandler.init(&reshape.out, _diagHandler, this);
@@ -96,6 +96,7 @@ namespace demod {
             // TODO: This will break when the entire radio module is disabled
             if (!_rds) { ImGui::BeginDisabled(); }
             if (ImGui::Checkbox(("Advanced RDS Info##_radio_wfm_rds_info_" + name).c_str(), &_rdsInfo)) {
+                setAdvancedRds(_rdsInfo);
                 _config->acquire();
                 _config->conf[name][getName()]["rdsInfo"] = _rdsInfo;
                 _config->release(true);
@@ -229,13 +230,17 @@ namespace demod {
             demod.setStereo(_stereo);
         }
 
+        void setAdvancedRds(bool enabled) {
+            rdsDemod.setSoftEnabled(enabled);
+            _rdsInfo = enabled;
+        }
+
     private:
         static void rdsHandler(uint8_t* data, int count, void* ctx) {
             WFM* _this = (WFM*)ctx;
             _this->rdsDecode.process(data, count);
         }
 
-        // DEBUGGING ONLY
         static void _diagHandler(float* data, int count, void* ctx) {
             WFM* _this = (WFM*)ctx;
             float* buf = _this->diag.acquireBuffer();

decoder_modules/radio/src/rds_demod.h

@@ -13,10 +13,13 @@ class RDSDemod : public dsp::Processor<dsp::complex_t, uint8_t> {
     using base_type = dsp::Processor<dsp::complex_t, uint8_t>;
 public:
     RDSDemod() {}
-    RDSDemod(dsp::stream<dsp::complex_t>* in) { init(in); }
+    RDSDemod(dsp::stream<dsp::complex_t>* in, bool enableSoft) { init(in, enableSoft); }
     ~RDSDemod() {}
 
-    void init(dsp::stream<dsp::complex_t>* in) {
+    void init(dsp::stream<dsp::complex_t>* in, bool enableSoft) {
+        // Save config
+        this->enableSoft = enableSoft;
+
         // Initialize the DSP
         agc.init(NULL, 1.0, 1e6, 0.1);
         costas.init(NULL, 0.005f);
@@ -37,6 +40,14 @@ class RDSDemod : public dsp::Processor<dsp::complex_t, uint8_t> {
         base_type::init(in);
     }
 
+    void setSoftEnabled(bool enable) {
+        assert(base_type::_block_init);
+        std::lock_guard<std::recursive_mutex> lck(base_type::ctrlMtx);
+        base_type::tempStop();
+        enableSoft = enable;
+        base_type::tempStart();
+    }
+
     void reset() {
         assert(base_type::_block_init);
         std::lock_guard<std::recursive_mutex> lck(base_type::ctrlMtx);
@@ -70,13 +81,17 @@ class RDSDemod : public dsp::Processor<dsp::complex_t, uint8_t> {
 
         base_type::_in->flush();
         if (!base_type::out.swap(count)) { return -1; }
-        if (!soft.swap(count)) { return -1; }
+        if (enableSoft) {
+            if (!soft.swap(count)) { return -1; }
+        }
         return count;
     }
 
     dsp::stream<float> soft;
 
 private:
+    bool enableSoft = false;
+    
     dsp::loop::FastAGC<dsp::complex_t> agc;
     dsp::loop::Costas<2> costas;
     dsp::tap<dsp::complex_t> taps;