ATV Demodulator: implememted horizontal sync leap standard with very slow 60 and 32 lines modes

plugins/channelrx/demodatv/atvdemod.cpp

@@ -461,11 +461,41 @@ void ATVDemod::demod(Complex& c)
         blnNewLine = true;
     }
     else if (m_intColIndex >= m_intNumberSamplePerLine + m_intNumberSamplePerTop) // No valid H sync
+    {
+        if (m_objRunning.m_enmATVStandard == ATVStdHLeap) // new image in hSync leap mode
+        {
+            m_objRegisteredATVScreen->renderImage(0);
+
+            if (m_objRFRunning.m_enmModulation == ATV_AM)
+            {
+                m_fltAmpMin = m_fltEffMin;
+                m_fltAmpMax = m_fltEffMax;
+                m_fltAmpDelta = m_fltEffMax-m_fltEffMin;
+
+                if(m_fltAmpDelta<=0.0)
+                {
+                    m_fltAmpDelta=1.0f;
+                }
+
+                //Reset extrema
+                m_fltEffMin = 2000000.0f;
+                m_fltEffMax = -2000000.0f;
+            }
+
+            m_intColIndex = m_intNumberSamplePerTop; // catch up with passed samples from the line length point
+            m_intRowIndex = 0;
+            m_objRegisteredATVScreen->selectRow(m_intRowIndex);
+            m_intLineIndex = 0;
+            m_intImageIndex++;
+            blnNewLine = false; // done already
+        }
+        else
         {
             //qDebug("HLine: %d", m_intColIndex);
             m_intColIndex = 0;
             blnNewLine = true;
         }
+    }
 
     if (blnNewLine)
     {
@@ -489,7 +519,7 @@ void ATVDemod::demod(Complex& c)
 
     // Vertical sync and image rendering
 
-    if (m_objRunning.m_blnVSync) // VSync activated
+    if ((m_objRunning.m_blnVSync) && (m_objRunning.m_enmATVStandard != ATVStdHLeap)) // VSync activated
     {
         if (m_intColIndex >= intSynchroTimeSamples)
         {
@@ -781,6 +811,12 @@ void ATVDemod::applyStandard()
 {
     switch(m_objConfig.m_enmATVStandard)
     {
+    case ATVStdHLeap:
+        // what is left in a line for the image
+        m_intNumberOfSyncLines  = 0;
+        m_intNumberOfBlackLines = 0;
+        m_interleaved = false;
+        break;
     case ATVStdShort:
         // what is left in a line for the image
         m_intNumberOfSyncLines  = 4;

plugins/channelrx/demodatv/atvdemod.h

@@ -51,7 +51,8 @@ public:
         ATVStdPAL525,
         ATVStd405,
         ATVStdShortInterleaved,
-        ATVStdShort
+        ATVStdShort,
+        ATVStdHLeap
     };
 
 	enum ATVModulation {

plugins/channelrx/demodatv/atvdemodgui.cpp

@@ -736,6 +736,12 @@ float ATVDemodGUI::getNominalLineTime(int nbLinesIndex, int fpsIndex)
     case 6:
         return 1.0f / (90 * fps);
         break;
+    case 7:
+        return 1.0f / (60 * fps);
+        break;
+    case 8:
+        return 1.0f / (32 * fps);
+        break;
     case 0:
     default:
         return 1.0f / (625 * fps);
@@ -765,6 +771,12 @@ int ATVDemodGUI::getNumberOfLines(int nbLinesIndex)
     case 6:
         return 90;
         break;
+    case 7:
+        return 60;
+        break;
+    case 8:
+        return 32;
+        break;
     case 0:
     default:
         return 625;

plugins/channelrx/demodatv/atvdemodgui.ui

@@ -542,6 +542,16 @@
           <string>90</string>
          </property>
         </item>
+        <item>
+         <property name="text">
+          <string>60</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>32</string>
+         </property>
+        </item>
        </widget>
       </item>
       <item>
@@ -598,7 +608,7 @@
         </item>
         <item>
          <property name="text">
-          <string>405L</string>
+          <string>PAL405</string>
          </property>
         </item>
         <item>
@@ -611,6 +621,11 @@
           <string>SHni</string>
          </property>
         </item>
+        <item>
+         <property name="text">
+          <string>HLeap</string>
+         </property>
+        </item>
        </widget>
       </item>
       <item>