Avoid the ring buffer if we're operating on disk data

commons.h

@@ -7,6 +7,7 @@
 #define RX_SAMPLE_RATE 12000
 
 #define JS8_USE_REFSPEC    1       // compute the signal refspec
+#define JS8_USE_IHSYM      1       // compute ihsym manually instead of from symspec
 #define JS8_RING_BUFFER    1       // use a ring buffer instead of clearing the decode frames
 #define JS8_DECODER_ONE    1       // decode only one mode at a time
 #define JS8_DECODER_E2S    0       // decode every 2 seconds instead of at the half symbol stop

mainwindow.cpp

@@ -2520,7 +2520,7 @@ void MainWindow::dataSink(qint64 frames)
     int nsmo=m_wideGraph->smoothYellow()-1;
 
     /// START IHSYM
-
+#if JS8_USE_IHSYM
     // moving ihsym computation to here from symspec.f90
     // 1) set the initial ihsym
     if(m_ihsym == 0){
@@ -2542,6 +2542,9 @@ void MainWindow::dataSink(qint64 frames)
     qDebug() << "dataSink" << k << "ihsym" << m_ihsym << "ihs" << ihs;
 
     /// END IHSYM
+#else
+    symspec_(&dec_data,&k,&trmin,&nsps,&m_inGain,&nsmo,&m_px,s,&m_df3,&m_ihsym,&m_npts8,&m_pxmax);
+#endif
 
     if(m_ihsym <= 0) return;
 
@@ -4061,6 +4064,11 @@ void MainWindow::decode(int submode, int period)
   // clear out d1
   memset(dec_data.d1, 0, sizeof(dec_data.d1));
 
+  // copy the whole sample if disk data, otherwise, copy the needed frames
+  if(m_diskData){
+    qDebug() << "try decode from" << 0 << "to" << dec_data.params.kin;
+    memcpy(dec_data.d1, dec_data.d2, sizeof(dec_data.d2));
+  } else {
       // compute frames to copy for decoding
       int neededFrames = dec_data.params.nzhsym * m_nsps / 2.0;
       int start = qMax(0, dec_data.params.kin-neededFrames);
@@ -4076,6 +4084,7 @@ void MainWindow::decode(int submode, int period)
           memcpy(dec_data.d1, &dec_data.d2[maxFrames-missingFrames], sizeof(dec_data.d2[0]) * missingFrames);
       }
       memcpy(dec_data.d1 + missingFrames, dec_data.d2 + start, sizeof(dec_data.d2[0]) * availableFrames);
+  }
 #else
   qDebug() << "try decode from" << 0 << "to" << dec_data.params.kin;
   memset(dec_data.d1, 0, sizeof(dec_data.d1));