mirror of https://github.com/saitohirga/WSJT-X.git
233 lines
7.1 KiB
Fortran
233 lines
7.1 KiB
Fortran
subroutine wsjt65(dat,npts,cfile6,NClearAve,MinSigdB,
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+ DFTolerance,NFreeze,NAFC,mode65,Nseg,MouseDF,NAgain,
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+ naggressive,ndepth,neme,nsked,mycall,hiscall,hisgrid,
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+ lumsg,lcum,nspecial,ndf,nstest,dfsh,iderrsh,idriftsh,
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+ snrsh,NSyncOK,ccfblue,ccfred,ndiag,nwsh)
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C Orchestrates the process of decoding JT65 messages, using data that
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C have been 2x downsampled. The search for shorthand messages has
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C already been done.
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real dat(npts) !Raw data
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integer DFTolerance
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logical first
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logical lcum
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character decoded*22,cfile6*6,special*5,cooo*3
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character*22 avemsg1,avemsg2,deepmsg,deepbest
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character*67 line,ave1,ave2
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character*1 csync
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character*12 mycall
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character*12 hiscall
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character*6 hisgrid
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real ccfblue(-5:28),ccfred(-224:224)
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real ftrack(126)
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logical lmid
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integer itf(2,9)
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include 'avecom.h'
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common/avecom2/f0a
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common/tmp3/nsync2,nsnr2,nstest2,line,ave1,ave2
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data first/.true./,ns10/0/,ns20/0/
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data itf/0,0, 1,0, -1,0, 0,-1, 0,1, 1,-1, 1,1, -1,-1, -1,1/
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save
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if(first) then
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call setup65 !Initialize pseudo-random arrays
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nsave=0
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first=.false.
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ave1=' '
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ave2=' '
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endif
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nq1=3
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nq2=6
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if(naggressive.eq.1) nq1=1
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if(NClearAve.ne.0) then
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nsave=0 !Clear the averaging accumulators
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ns10=0
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ns20=0
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ave1=' '
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ave2=' '
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endif
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if(MinSigdB.eq.99 .or. MinSigdB.eq.-99) then
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ns10=0 !For Include/Exclude ?
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ns20=0
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endif
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C Attempt to synchronize: look for sync tone, get DF and DT.
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call sync65(dat,npts,DFTolerance,NFreeze,NAFC,MouseDF,
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+ dtx,dfx,snrx,snrsync,ccfblue,ccfred,flip,width,ftrack)
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f0=1270.46 + dfx
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csync=' '
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decoded=' '
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special=' '
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cooo=' '
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itry=0
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ncount=-1 !Flag for RS decode of current record
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ncount1=-1 !Flag for RS Decode of ave1
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ncount2=-1 !Flag for RS Decode of ave2
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NSyncOK=0
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qbest=0.
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if(nsave.lt.MAXAVE .and. (NAgain.eq.0 .or. NClearAve.eq.1))
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+ nsave=nsave+1
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if(nsave.le.0) go to 900 !Prevent bounds error
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nflag(nsave)=0 !Clear the "good sync" flag
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iseg(nsave)=Nseg !Set the RX segment to 1 or 2
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nsync=nint(snrsync-3.0)
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nsnr=nint(snrx)
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if(nsnr.lt.-30 .or. nsync.lt.0) nsync=0
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nsnrlim=-32
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C Good Sync takes precedence over a shorthand message:
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if(nsync.ge.MinSigdB .and. nsnr.ge.nsnrlim .and.
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+ nsync.gt.nstest) nstest=0
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if(nstest.gt.0) then
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dfx=dfsh
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nsync=nstest
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nsnr=snrsh
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dtx=1.
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ccfblue(-5)=-999.0
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if(nspecial.eq.1) special='ATT '
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if(nspecial.eq.2) special='RO '
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if(nspecial.eq.3) special='RRR '
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if(nspecial.eq.4) special='73 '
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NSyncOK=1 !Mark this RX file as good (for "Save Decoded")
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if(NFreeze.eq.0 .or. DFTolerance.ge.200) special(5:5)='?'
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width=nwsh
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go to 200
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endif
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if(nsync.lt.MinSigdB .or. nsnr.lt.nsnrlim) go to 200
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C If we get here, we have achieved sync!
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NSyncOK=1
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nflag(nsave)=1 !Mark this RX file as good
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csync='*'
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if(flip.lt.0.0) then
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csync='#'
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cooo='O ?'
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endif
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C Do a "peakup search" over DT, looking for successful
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C result from the Reed-Solomon decoder.
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itrymax=1
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if(ndepth.eq.2) itrymax=1
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if(ndepth.eq.3) itrymax=5
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do itry=1,itrymax
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idt=itf(1,itry)
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idf=itf(2,itry)
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dtxx=dtx + idt*0.036 !### Was 0.012 ###
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dfxx=dfx + mode65*idf*1.346
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lmid=.false.
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if(itry.eq.1) lmid=.true.
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call decode65(dat,npts,dtxx,dfxx,flip,ndepth,neme,nsked,
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+ mycall,hiscall,hisgrid,mode65,lmid,ftrack,decoded,
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+ ncount,deepmsg,qual)
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if(qual.gt.qbest) then
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qbest=qual
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dtbest=dtxx
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dfbest=dfxx
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deepbest=deepmsg
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itrybest=itry
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endif
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if(ncount.ge.0) then
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dtx=dtxx !Successful decode
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dfx=dfxx
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go to 200
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endif
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enddo
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itry=itrybest
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ncount=-1
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200 continue
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kvqual=0
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if(ncount.ge.0) kvqual=1
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nqual=qbest
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if(nqual.ge.nq1 .and.kvqual.eq.0) then
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dtx=dtbest
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dfx=dfbest
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decoded=deepbest
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endif
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ndf=nint(dfx)
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if(flip.lt.0.0 .and. (kvqual.eq.1 .or. nqual.ge.nq2)) cooo='OOO'
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if(kvqual.eq.0.and.nqual.ge.nq1.and.nqual.lt.nq2) cooo(2:3)=' ?'
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if(decoded.eq.' ') cooo=' '
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write(line,1010) cfile6,nsync,nsnr,dtx-1.0,ndf,
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+ nint(width),csync,special,decoded(1:18),cooo,kvqual,nqual,itry
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1010 format(a6,i3,i5,f5.1,i5,i3,1x,a1,1x,a5,a18,1x,a3,i5,i3,i2)
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C Blank DT if shorthand message (### wrong logic? ###)
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if(special.ne.' ') then
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line(15:19)=' '
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ccfblue(-5)=-9999.0
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if(ndiag.gt.0) write(line(51:57),1012) iderrsh,idriftsh
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1012 format(i3,i4)
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else
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nspecial=0
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endif
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C Blank the end-of-line numbers
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if(naggressive.eq.0) line(58:67)=' '
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if(ndiag.eq.0) line(66:67)=' '
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if(lcum) write(21,1011) line
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1011 format(a67)
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C Write decoded msg unless this is an "Exclude" request:
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if(MinSigdB.lt.99) write(lumsg,1011) line
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if(nsave.ge.1) call avemsg65(1,mode65,ndepth,avemsg1,nused1,
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+ ns1,ncount1)
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if(nsave.ge.1) call avemsg65(2,mode65,ndepth,avemsg2,nused2,
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+ ns2,ncount2)
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C Write the average line
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if(ns1.ge.1 .and. ns1.ne.ns10) then
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if(ns1.lt.10) write(ave1,1021) cfile6,1,nused1,ns1,avemsg1
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1021 format(a6,i3,i4,'/',i1,20x,a18)
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if(ns1.ge.10 .and. nsave.le.99) write(ave1,1022) cfile6,
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+ 1,nused1,ns1,avemsg1
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1022 format(a6,i3,i4,'/',i2,19x,a18)
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if(ns1.ge.100) write(ave1,1023) cfile6,1,nused1,ns1,
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+ avemsg1
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1023 format(a6,i3,i4,'/',i3,18x,a18)
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if(lcum .and. (avemsg1.ne.' '))
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+ write(21,1011) ave1(1:57)//' '
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ns10=ns1
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endif
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C If Monitor segment #2 is available, write that line also
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if(ns2.ge.1 .and. ns2.ne.ns20) then
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if(ns2.lt.10) write(ave2,1021) cfile6,2,nused2,ns2,avemsg2
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if(ns2.ge.10 .and. nsave.le.99) write(ave2,1022) cfile6,
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+ 2,nused2,ns2,avemsg2
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if(ns2.ge.100) write(ave2,1023) cfile6,2,nused2,ns2,avemsg2
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if(lcum .and. (avemsg2.ne.' '))
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+ write(21,1011) ave2(1:57)//' '
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ns20=ns2
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endif
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if(ndiag.eq.0) then
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ave1(58:67)=' '
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ave2(58:67)=' '
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endif
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write(12,1011) ave1
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write(12,1011) ave2
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800 if(lumsg.ne.6) end file 11
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f0a=f0
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900 continue
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C### test only
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nsync2=nsync
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nsnr2=nsnr
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nstest2=nstest
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return
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end
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