1. Fix a longstanding (and evidently latent) bug in widegraph.cpp.

2. Add basic proof-of-concept code that uses QAudioInput instead of
PortAudio for sound input.  By default, this test code is not active,
and it compiles using PortAudio.  To compile using QAudio, uncomment
the line

#DEFINES += QAUDIO_INPUT

in wsjtx.pro.  Note that device selection in the QAudio code is presently
hard-wired to use the default input device.  You can change this 
choice on line 267 in soundin.cpp.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3510 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

widegraph.cpp

@@ -2,6 +2,8 @@
 #include "ui_widegraph.h"
 #include "commons.h"
 
+#define MAX_SCREENSIZE 2048
+
 WideGraph::WideGraph(QWidget *parent) :
   QDialog(parent),
   ui(new Ui::WideGraph)
@@ -10,7 +12,7 @@ WideGraph::WideGraph(QWidget *parent) :
   this->setWindowFlags(Qt::Dialog);
   this->installEventFilter(parent); //Installing the filter
   ui->widePlot->setCursor(Qt::CrossCursor);
-  this->setMaximumWidth(2048);
+	this->setMaximumWidth(MAX_SCREENSIZE);
   this->setMaximumHeight(880);
   ui->widePlot->setMaximumHeight(800);
   ui->widePlot->m_bCurrent=false;
@@ -85,7 +87,7 @@ void WideGraph::dataSink2(float s[], float df3, int ihsym,
                           int ndiskdata)
 {
   static float splot[NSMAX];
-  static float swide[2048];
+	static float swide[MAX_SCREENSIZE];
   int nbpp = ui->widePlot->binsPerPixel();
   static int n=0;
 
@@ -105,6 +107,7 @@ void WideGraph::dataSink2(float s[], float df3, int ihsym,
     n=0;
     int i=int(ui->widePlot->startFreq()/df3 + 0.5);
     int jz=5000.0/(nbpp*df3);
+		if(jz>MAX_SCREENSIZE) jz=MAX_SCREENSIZE;
     for (int j=0; j<jz; j++) {
       float sum=0;
       for (int k=0; k<nbpp; k++) {