From d1289e23f368556e20eb123729d09bf185934693 Mon Sep 17 00:00:00 2001
From: Joe Taylor <k1jt@arrl.org>
Date: Tue, 11 Dec 2012 18:50:07 +0000
Subject: [PATCH] Implemented "CQ DX " by disguising it as callsign "CQ9DX ".

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@2791 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
---
 lib/genjt9.f90    | 10 ++++------
 lib/jt9code.f90   |  8 ++++++--
 lib/packmsg.f90   |  4 +++-
 lib/unpackmsg.f90 |  5 ++++-
 mainwindow.cpp    | 10 ++++++----
 mainwindow.h      |  3 ++-
 6 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/lib/genjt9.f90 b/lib/genjt9.f90
index 2ee65782b..25be708d0 100644
--- a/lib/genjt9.f90
+++ b/lib/genjt9.f90
@@ -1,4 +1,4 @@
-subroutine genjt9(msg0,msgsent,i4tone)
+subroutine genjt9(msg0,ichk,msgsent,i4tone,itext)
 
 ! Encodes a JT9 message and returns msgsent, the message as it will
 ! be decoded, and an integer array i4tone(85) of 9-FSK tone values 
@@ -32,12 +32,10 @@ subroutine genjt9(msg0,msgsent,i4tone)
   enddo
 
   call packmsg(message,i4Msg6BitWords,text)   !Pack message into 12 6-bit bytes
+  itext=0
+  if(text) itext=1
   call unpackmsg(i4Msg6BitWords,msgsent)      !Unpack to get msgsent
-  if(i4tone(1).eq.-99) then
-     i4tone(2)=0
-     if(text) i4tone(2)=1
-     go to 999
-  endif
+  if(ichk.ne.0) go to 999
   call entail(i4Msg6BitWords,i1Msg8BitBytes)  !Add tail, convert to 8-bit bytes
   nsym2=206
   call encode232(i1Msg8BitBytes,nsym2,i1EncodedBits)   !Encode K=32, r=1/2
diff --git a/lib/jt9code.f90 b/lib/jt9code.f90
index 85c861248..70c008e51 100644
--- a/lib/jt9code.f90
+++ b/lib/jt9code.f90
@@ -26,10 +26,14 @@ program jt9code
   write(*,1000) msg0
 1000 format('Message:',3x,a22)
   msg=msg0
-  call genjt9(msg,decoded,i4tone)               !Encode message into tone #s
+  ichk=0
+  itext=0
+  call genjt9(msg,ichk,decoded,i4tone,itext)       !Encode message into tone #s
   write(*,1002) i4tone
 1002 format('Channel symbols:'/(30i2))
-  write(*,1004) decoded
+  if(itext.eq.0) write(*,1004) decoded
 1004 format('Decoded message:',1x,a22)
+  if(itext.ne.0) write(*,1005) decoded
+1005 format('Decoded message:',1x,a22,3x,'(free text)')
 
 999 end program jt9code
diff --git a/lib/packmsg.f90 b/lib/packmsg.f90
index 509e4679c..6c7619bd0 100644
--- a/lib/packmsg.f90
+++ b/lib/packmsg.f90
@@ -24,8 +24,10 @@ subroutine packmsg(msg,dat,text)
      iz=iz-1
   enddo
 
+5 if(msg(1:6).eq.'CQ DX ') msg(3:3)='9'
+
 ! See if it's a CQ message
-5 if(msg(1:3).eq.'CQ ') then
+  if(msg(1:3).eq.'CQ ') then
      i=3
 ! ... and if so, does it have a reply frequency?
      if(msg(4:4).ge.'0' .and. msg(4:4).le.'9' .and.                  &
diff --git a/lib/unpackmsg.f90 b/lib/unpackmsg.f90
index 8b9c5fad8..3cc2d8df3 100644
--- a/lib/unpackmsg.f90
+++ b/lib/unpackmsg.f90
@@ -96,5 +96,8 @@ subroutine unpackmsg(dat,msg)
      msg(j:j)=' '
   endif
 
-100 return
+100 continue
+  if(msg(1:6).eq.'CQ9DX ') msg(3:3)=' '
+
+  return
 end subroutine unpackmsg
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 2f27999e2..a258381c2 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1061,7 +1061,8 @@ void MainWindow::guiUpdate()
     ba2msg(ba,message);
 //    ba2msg(ba,msgsent);
     int len1=22;
-    genjt9_(message,msgsent,itone,len1,len1);
+    int ichk=0,itext=0;
+    genjt9_(message,&ichk,msgsent,itone,&itext,len1,len1);
     msgsent[22]=0;
     lab5->setText("Last Tx:  " + QString::fromAscii(msgsent));
     if(m_restart) {
@@ -1457,14 +1458,15 @@ void MainWindow::msgtype(QString t, QLineEdit* tx)               //msgtype()
   char msgsent[23];
   int len1=22;
   int jtone[85];
+
   t=t.toUpper();
   QByteArray s=t.toUpper().toLocal8Bit();
   ba2msg(s,message);
-  jtone[0]=-99;
-  genjt9_(message,msgsent,jtone,len1,len1);
+  int ichk=1,itext=0;
+  genjt9_(message,&ichk,msgsent,itone,&itext,len1,len1);
   msgsent[22]=0;
   bool text=false;
-  if(jtone[1]==1) text=true;
+  if(itext!=0) text=true;
   QString t1;
   t1.fromAscii(msgsent);
   if(text) t1=t1.mid(0,13);
diff --git a/mainwindow.h b/mainwindow.h
index 6e87ba2a5..98c5aa7b0 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -233,7 +233,8 @@ void symspec_(int* k, int* ntrperiod, int* nsps, int* ingain, int* nb,
               float* df3, int* nhsym, int* nzap, float* slimit,
               uchar lstrong[], int* npts8);
 
-void genjt9_(char* msg, char* msgsent, int itone[], int len1, int len2);
+void genjt9_(char* msg, int* ichk, char* msgsent, int itone[],
+             int* itext, int len1, int len2);
 
 //void decoder_(int* ntrperiod, int* ndepth, int* mRxLog, float c0[]);
 }