Temporary code, to aid with a series of tests of the JT9 decoder.

This commit will serve as a benchmark for comparison with new code to
be written.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3266 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

lib/decoder.f90

@@ -21,6 +21,12 @@ subroutine decoder(ss,c0,nstandalone)
   common/tracer/limtrace,lu
   save
 
+  call system_clock(iclock0,iclock_rate,iclock_max)           !###
+  nfreqs0=0
+  nfreqs1=0
+  ndecodes0=0
+  ndecodes1=0
+
   call timer('decoder ',0)
 
   open(13,file='decoded.txt',status='unknown')
@@ -112,11 +118,18 @@ subroutine decoder(ss,c0,nstandalone)
              (ccfred(i).lt.ccfred(i+1))) cycle
         if(nqd.eq.1 .or.                                                   &
            (ccfred(i).ge.ccflim .and. abs(f-fgood).gt.10.0*df8)) then
+
+           if(nqd.eq.0) nfreqs0=nfreqs0+1
+           if(nqd.eq.1) nfreqs1=nfreqs1+1
+
            call timer('softsym ',0)
            fpk=1000.0 + df3*(i-1)
-           c1(1:npts8)=conjg(c0(1:npts8))
+!           c1(1:npts8)=conjg(c0(1:npts8))
-           call softsym(c1,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,   &
+!           call softsym(c1,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,   &
-                i1SoftSymbols)
+!                i1SoftSymbols)
+           call softsym(c0,npts8,nsps8,newdat,fpk,syncpk,snrdb,xdt,freq,   &
+                drift,i1SoftSymbols)
+
            call timer('softsym ',1)
 
            call timer('decode9 ',0)
@@ -129,11 +142,19 @@ subroutine decoder(ss,c0,nstandalone)
            if(nsync.gt.10) nsync=10
            nsnr=nint(snrdb)
            ndrift=nint(drift/df3)
+
+           write(38,3002) nutc,freq,ccfred(i),nlim,msg
+3002       format(i4.4,2f8.1,i9,2x,a22)
+
            if(msg.ne.'                      ') then
+              if(nqd.eq.0) ndecodes0=ndecodes0+1
+              if(nqd.eq.1) ndecodes1=ndecodes1+1
+
               write(*,fmt) nutc,nsync,nsnr,xdt,freq,ndrift,msg
               write(13,fmt) nutc,nsync,nsnr,xdt,freq,ndrift,msg
 !              write(14,1014) nutc,nsync,nsnr,xdt,freq,ndrift,ccfred(i),nlim,msg
 !1014          format(i4.4,i4,i5,f6.1,f8.0,i4,f9.1,i9,3x,a22)
+
               iaa=max(1,i-3)
               ibb=min(NSMAX,i+11)
               fgood=f
@@ -158,5 +179,12 @@ subroutine decoder(ss,c0,nstandalone)
   call timer('decoder ',1)
   if(nstandalone.eq.0) call timer('decoder ',101)
 
+  call system_clock(iclock,iclock_rate,iclock_max)
+  write(39,3001) nutc,nfreqs1,nfreqs0,ndecodes1,ndecodes0,       &
+       float(iclock-iclock0)/iclock_rate
+3001 format(5i8,f10.3)
+  call flush(38)
+  call flush(39)
+
   return
 end subroutine decoder

lib/downsam9.f90

@@ -1,4 +1,4 @@
-subroutine downsam9(c0,npts8,nsps8,nspsd,fpk,c2,nz2)     
+subroutine downsam9(c0,npts8,nsps8,newdat,nspsd,fpk,c2,nz2)
 
 !Downsample to nspsd samples per symbol, info centered at fpk
 
@@ -7,16 +7,19 @@ subroutine downsam9(c0,npts8,nsps8,nspsd,fpk,c2,nz2)
   complex c1(0:NMAX-1)
   complex c2(0:4096-1)
   real s(1000)
+  save
 
-  fac=1.e-4
-  c1(0:npts8-1)=fac*c0                     !Copy c0 into c1
-  do i=1,npts8-1,2
-     c1(i)=-c1(i)
-  enddo
-  c1(npts8:)=0.                            !Zero the rest of c1
   nfft1=128*nsps8                          !Forward FFT length
   nh1=nfft1/2
   df1=1500.0/nfft1
+
+  if(newdat.eq.1) then
+     fac=1.e-4
+     do i=0,npts8-1,2
+        c1(i)=fac*conjg(c0(i))
+        c1(i+1)=-fac*conjg(c0(i+1))
+     enddo
+     c1(npts8:)=0.                            !Zero the rest of c1
      call four2a(c1,nfft1,1,-1,1)             !Forward FFT
      
      nadd=1.0/df1
@@ -27,8 +30,12 @@ subroutine downsam9(c0,npts8,nsps8,nspsd,fpk,c2,nz2)
            j=j+1
            s(i)=s(i)+real(c1(j))**2 + aimag(c1(j))**2
         enddo
+!        write(37,3001) i+1000,s(i),db(s(i)),nadd
+!3001    format(i5,2f12.3,i8)
      enddo
      call pctile(s,1000,40,avenoise)
+     newdat=0
+  endif
 
   ndown=nsps8/16                           !Downsample factor
   nfft2=nfft1/ndown                        !Backward FFT length

lib/softsym.f90

@@ -1,4 +1,4 @@
-subroutine softsym(c0,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,   &
+subroutine softsym(c0,npts8,nsps8,newdat,fpk,syncpk,snrdb,xdt,freq,drift,   &
      i1SoftSymbols)
 
 ! Compute the soft symbols
@@ -16,7 +16,7 @@ subroutine softsym(c0,npts8,nsps8,fpk,syncpk,snrdb,xdt,freq,drift,   &
   ndown=nsps8/nspsd
 
 ! Mix, low-pass filter, and downsample to 16 samples per symbol
-  call downsam9(c0,npts8,nsps8,nspsd,fpk,c2,nz2)
+  call downsam9(c0,npts8,nsps8,newdat,nspsd,fpk,c2,nz2)
 
   call peakdt9(c2,nz2,nsps8,nspsd,c3,nz3,xdt)  !Find DT
 

mainwindow.cpp

@@ -1,4 +1,4 @@
-//---------------------------------------------------------------- MainWindow
+//--------------------------------------------------------------- MainWindow
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "devsetup.h"