Scope: update trace continuously for sweep times of one second or more

plugins/channelrx/chanalyzer/readme.md

@@ -32,7 +32,9 @@ The interface is essentially divided in the following sections
   4. Scope trace control
   5. Scope trigger control
   
-Note: the spectrum view (Channel spectrum) is not presented here.  
+Note 1: the scope trace is updated continuously for sweep times of 1 second or more else the display is refreshed only when the trace finishes.
+
+Note 2: the spectrum view (Channel spectrum) is not presented here.  
 
 <h2>C. Channel controls</h2>
 

sdrgui/dsp/scopevis.cpp

@@ -595,10 +595,17 @@ int ScopeVis::processTraces(const SampleVector::const_iterator& cbegin, const Sa
         m_nbSamples--;
     }
 
+    float traceTime = ((float) m_traceSize) / m_sampleRate;
+
+    if (traceTime >= 1.0f) { // display continuously if trace time is 1 second or more
+        m_glScope->newTraces(&m_traces.m_traces[m_traces.currentBufferIndex()]);
+    }
+
     if (m_nbSamples == 0) // finished
     {
-        //sqDebug("ScopeVis::processTraces: m_traceCount: %d", m_traces.m_tracesControl.begin()->m_traceCount[m_traces.currentBufferIndex()]);
-        m_glScope->newTraces(&m_traces.m_traces[m_traces.currentBufferIndex()]);
+        if (traceTime < 1.0f) { // display only at trace end if trace time is less than 1 second
+            m_glScope->newTraces(&m_traces.m_traces[m_traces.currentBufferIndex()]);
+        }
         m_traces.switchBuffer();
         return end - begin; // return remainder count
     }

sdrgui/dsp/scopevis.h

@@ -562,7 +562,6 @@ private:
         TriggerUntriggered, //!< Trigger is not kicked off yet (or trigger list is empty)
         TriggerTriggered,   //!< Trigger has been kicked off
         TriggerDelay,       //!< Trigger conditions have been kicked off but it is waiting for delay before final kick off
-        TriggerNewConfig,   //!< Special condition when a new configuration has been received
     };
 
     struct TriggerCondition