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https://github.com/saitohirga/WSJT-X.git
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129 lines
3.6 KiB
Fortran
129 lines
3.6 KiB
Fortran
subroutine qra64a(dd,npts,nf1,nf2,nfqso,ntol,mode64,minsync,ndepth, &
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emedelay,mycall_12,hiscall_12,hisgrid_6,sync,nsnr,dtx,nfreq,decoded,nft)
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use packjt
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use timer_module, only: timer
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parameter (NMAX=60*12000,LN=1152*63)
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character decoded*22
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character*12 mycall_12,hiscall_12
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character*6 mycall,hiscall,hisgrid_6
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character*4 hisgrid
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logical ltext
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complex c00(0:720000) !Analytic signal for dd()
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real dd(NMAX) !Raw data sampled at 12000 Hz
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integer dat4(12) !Decoded message (as 12 integers)
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data nc1z/-1/,nc2z/-1/,ng2z/-1/,maxaptypez/-1/
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save
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call timer('qra64a ',0)
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irc=-1
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decoded=' '
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nft=99
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if(nfqso.lt.nf1 .or. nfqso.gt.nf2) go to 900
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mycall=mycall_12(1:6) !### May need fixing? ###
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hiscall=hiscall_12(1:6)
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hisgrid=hisgrid_6(1:4)
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call packcall(mycall,nc1,ltext)
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call packcall(hiscall,nc2,ltext)
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call packgrid(hisgrid,ng2,ltext)
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nSubmode=0
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if(mode64.eq.2) nSubmode=1
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if(mode64.eq.4) nSubmode=2
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if(mode64.eq.8) nSubmode=3
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if(mode64.eq.16) nSubmode=4
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b90=1.0
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nFadingModel=1
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maxaptype=4
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if(iand(ndepth,64).ne.0) maxaptype=5
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call qra_params(ndepth,maxaptype,idfmax,idtmax,ibwmin,ibwmax,maxdist)
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if(nc1.ne.nc1z .or. nc2.ne.nc2z .or. ng2.ne.ng2z .or. &
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maxaptype.ne.maxaptypez) then
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do naptype=0,maxaptype
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if(naptype.eq.2 .and. maxaptype.eq.4) cycle
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call qra64_dec(s3dummy,nc1,nc2,ng2,naptype,1,nSubmode,b90, &
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nFadingModel,dat4,snr2,irc)
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enddo
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nc1z=nc1
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nc2z=nc2
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ng2z=ng2
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maxaptypez=maxaptype
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endif
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naptype=maxaptype
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call ana64(dd,npts,c00)
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call timer('sync64 ',0)
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call sync64(c00,nf1,nf2,nfqso,ntol,minsync,mode64,emedelay,dtx,f0, &
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jpk0,sync,sync2,width)
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call timer('sync64 ',1)
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nfreq=nint(f0)
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if(mode64.eq.1 .and. minsync.ne.-1 .and. (sync-7.0).lt.minsync) go to 900
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nsps=6912
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call timer('qraloops',0)
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call qra_loops(c00,npts/2,nsps,64,mode64,nsubmode,nFadingModel, &
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ndepth,nc1,nc2,ng2,naptype,jpk0,dtx,f0,width,snr2,irc,dat4)
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call timer('qraloops',1)
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decoded=' '
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if(irc.ge.0) then
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call unpackmsg(dat4,decoded) !Unpack the user message
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call fmtmsg(decoded,iz)
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if(index(decoded,"000AAA ").ge.1) then
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! Suppress a certain type of garbage decode.
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decoded=' '
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irc=-1
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endif
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nft=100 + irc
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nsnr=nint(snr2)
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else
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snr2=0.
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endif
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nfreq=nint(f0)
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900 if(irc.lt.0) then
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sy=max(1.0,sync)
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if(nSubmode.eq.0) nsnr=nint(10.0*log10(sy)-35.0) !A
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if(nSubmode.eq.1) nsnr=nint(10.0*log10(sy)-34.0) !B
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if(nSubmode.eq.2) nsnr=nint(10.0*log10(sy)-29.0) !C
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if(nSubmode.eq.3) nsnr=nint(10.0*log10(sy)-29.0) !D
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if(nSubmode.eq.4) nsnr=nint(10.0*log10(sy)-24.0) !E
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endif
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call timer('qra64a ',1)
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return
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end subroutine qra64a
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subroutine qra_params(ndepth,maxaptype,idf0max,idt0max,ibwmin,ibwmax,maxdist)
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! If file qra_params is present in CWD, read decoding params from it.
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integer iparam(7)
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logical first,ex
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! data iparam/3,5,3,11,0,9,30/ !Maximum effort
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data iparam/2,5,3,11,3,9,10/ !Default values
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data first/.true./
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save first,iparam
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if(first) then
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inquire(file='qra_params',exist=ex)
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if(ex) then
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open(29,file='qra_params',status='old')
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read(29,*) iparam
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close(29)
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endif
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first=.false.
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endif
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ndepth=iparam(1)
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maxaptype=iparam(2)
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idf0max=iparam(3)
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idt0max=iparam(4)
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ibwmin=iparam(5)
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ibwmax=iparam(6)
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maxdist=iparam(7)
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return
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end subroutine qra_params
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