ATV Demod: beter smooth out the channel power display

plugins/channelrx/demodatv/atvdemod.cpp

@@ -58,7 +58,7 @@ ATVDemod::ATVDemod() :
     m_intNumberOfLines=0;
     m_intNumberOfRowsToDisplay=0;
 
-    m_objMagSqAverage.resize(16, 1.0);
+    m_objMagSqAverage.resize(32, 1.0);
 
     memset((void*)m_fltBufferI,0,6*sizeof(float));
     memset((void*)m_fltBufferQ,0,6*sizeof(float));

plugins/channelrx/demodatv/atvdemodgui.cpp

@@ -304,6 +304,8 @@ ATVDemodGUI::ATVDemodGUI(PluginAPI* objPluginAPI, DeviceSourceAPI *objDeviceAPI,
 
     //ui->screenTV->connectTimer(m_objPluginAPI->getMainWindow()->getMasterTimer());
 
+    m_objMagSqAverage.resize(4, 1.0);
+
     resetToDefaults(); // does applySettings()
 }
 
@@ -379,7 +381,7 @@ void ATVDemodGUI::enterEvent(QEvent*)
 
 void ATVDemodGUI::tick()
 {
-    if (m_intTickCount < 10) // ~500 ms
+    if (m_intTickCount < 4) // ~200 ms
     {
         m_intTickCount++;
     }
@@ -387,7 +389,8 @@ void ATVDemodGUI::tick()
     {
         if (m_objATVDemod)
         {
-            double magSqDB = CalcDb::dbPower(m_objATVDemod->getMagSq() / (1<<30));
+            m_objMagSqAverage.feed(m_objATVDemod->getMagSq());
+            double magSqDB = CalcDb::dbPower(m_objMagSqAverage.average() / (1<<30));
             ui->channePowerText->setText(tr("%1 dB").arg(magSqDB, 0, 'f', 1));
         }
 

plugins/channelrx/demodatv/atvdemodgui.h

@@ -88,6 +88,7 @@ private:
     bool m_blnBasicSettingsShown;
     bool m_blnDoApplySettings;
 
+    MovingAverage<double> m_objMagSqAverage;
     int m_intTickCount;
 
     explicit ATVDemodGUI(PluginAPI* objPluginAPI, DeviceSourceAPI *objDeviceAPI, QWidget* objParent = NULL);

plugins/channelrx/demodatv/atvdemodgui.ui

@@ -209,8 +209,17 @@
       </item>
       <item>
        <widget class="QLabel" name="rfOppBWText">
+        <property name="minimumSize">
+         <size>
+          <width>30</width>
+          <height>0</height>
+         </size>
+        </property>
         <property name="text">
-         <string>10.0</string>
+         <string>1.0</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
@@ -256,12 +265,12 @@
        <widget class="QLabel" name="rfBWText">
         <property name="minimumSize">
          <size>
-          <width>54</width>
+          <width>60</width>
           <height>0</height>
          </size>
         </property>
         <property name="text">
-         <string>10.0 MHz</string>
+         <string>1.0 MHz</string>
         </property>
         <property name="alignment">
          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>