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https://github.com/saitohirga/WSJT-X.git
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232 lines
6.8 KiB
Fortran
232 lines
6.8 KiB
Fortran
module ft8_decode
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parameter (MAXFOX=1000)
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character*12 c2fox(MAXFOX)
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character*4 g2fox(MAXFOX)
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integer nsnrfox(MAXFOX)
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integer nfreqfox(MAXFOX)
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integer n30fox(MAXFOX)
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integer n30z
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integer nfox
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type :: ft8_decoder
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procedure(ft8_decode_callback), pointer :: callback
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contains
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procedure :: decode
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end type ft8_decoder
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abstract interface
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subroutine ft8_decode_callback (this,sync,snr,dt,freq,decoded,nap,qual)
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import ft8_decoder
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implicit none
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class(ft8_decoder), intent(inout) :: this
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real, intent(in) :: sync
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integer, intent(in) :: snr
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real, intent(in) :: dt
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real, intent(in) :: freq
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character(len=37), intent(in) :: decoded
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integer, intent(in) :: nap
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real, intent(in) :: qual
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end subroutine ft8_decode_callback
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end interface
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contains
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subroutine decode(this,callback,iwave,nQSOProgress,nfqso,nftx,newdat, &
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nutc,nfa,nfb,nzhsym,ndepth,emedelay,ncontest,nagain,lft8apon, &
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lapcqonly,napwid,mycall12,hiscall12,ldiskdat)
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use iso_c_binding, only: c_bool, c_int
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use timer_module, only: timer
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use shmem, only: shmem_lock, shmem_unlock
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include 'ft8/ft8_params.f90'
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class(ft8_decoder), intent(inout) :: this
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procedure(ft8_decode_callback) :: callback
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parameter (MAXCAND=300,MAX_EARLY=100)
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real*8 tsec,tseq
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real s(NH1,NHSYM)
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real sbase(NH1)
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real candidate(3,MAXCAND)
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real dd(15*12000),dd1(15*12000)
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logical, intent(in) :: lft8apon,lapcqonly,nagain
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logical newdat,lsubtract,ldupe,lrefinedt
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logical*1 ldiskdat
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logical lsubtracted(MAX_EARLY)
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character*12 mycall12,hiscall12
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integer*2 iwave(15*12000)
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integer apsym2(58),aph10(10)
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character datetime*13,msg37*37
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character*37 allmessages(100)
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character*12 ctime
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integer allsnrs(100)
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integer itone(NN)
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integer itone_save(NN,MAX_EARLY)
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real f1_save(MAX_EARLY)
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real xdt_save(MAX_EARLY)
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save s,dd,dd1,ndec_early,itone_save,f1_save,xdt_save,lsubtracted,allmessages
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this%callback => callback
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write(datetime,1001) nutc !### TEMPORARY ###
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1001 format("000000_",i6.6)
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if(ndepth.eq.1 .and. nzhsym.lt.50) then
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ndec_early=0
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return
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endif
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if(ndepth.eq.1 .and. nzhsym.eq.50) then
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dd=iwave
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endif
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call ft8apset(mycall12,hiscall12,ncontest,apsym2,aph10)
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if(nzhsym.le.47) then
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dd=iwave
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dd1=dd
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endif
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if(nzhsym.eq.41) then
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ndecodes=0
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allmessages=' '
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allsnrs=0
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else
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ndecodes=ndec_early
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endif
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if(nzhsym.eq.47 .and. ndec_early.eq.0) then
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dd1=dd
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go to 800
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endif
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if(nzhsym.eq.47 .and. ndec_early.ge.1) then
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lsubtracted=.false.
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lrefinedt=.true.
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if(ndepth.le.2) lrefinedt=.false.
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call timer('sub_ft8b',0)
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do i=1,ndec_early
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if(xdt_save(i)-0.5.lt.0.396) then
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call subtractft8(dd,itone_save(1,i),f1_save(i),xdt_save(i), &
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lrefinedt)
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lsubtracted(i)=.true.
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endif
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call timestamp(tsec,tseq,ctime)
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if(.not.ldiskdat .and. tseq.ge.14.3d0) then !Bail out before done
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call timer('sub_ft8b',1)
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dd1=dd
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go to 800
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endif
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enddo
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call timer('sub_ft8b',1)
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dd1=dd
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go to 900
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endif
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if(nzhsym.eq.50 .and. ndec_early.ge.1) then
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n=47*3456
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dd(1:n)=dd1(1:n)
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dd(n+1:)=iwave(n+1:)
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call timer('sub_ft8c',0)
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do i=1,ndec_early
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if(lsubtracted(i)) cycle
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call subtractft8(dd,itone_save(1,i),f1_save(i),xdt_save(i),.true.)
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enddo
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call timer('sub_ft8c',1)
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endif
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ifa=nfa
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ifb=nfb
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if(nagain) then
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ifa=nfqso-10
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ifb=nfqso+10
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endif
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! For now:
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! ndepth=1: 1 pass, bp
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! ndepth=2: subtraction, 3 passes, bp+osd (no subtract refinement)
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! ndepth=3: subtraction, 3 passes, bp+osd
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npass=3
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if(ndepth.eq.1) npass=1
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do ipass=1,npass
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newdat=.true.
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syncmin=1.3
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if(ndepth.le.2) syncmin=1.6
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if(ipass.eq.1) then
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lsubtract=.true.
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ndeep=ndepth
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if(ndepth.eq.3) ndeep=2
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elseif(ipass.eq.2) then
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n2=ndecodes
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if(ndecodes.eq.0) cycle
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lsubtract=.true.
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ndeep=ndepth
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elseif(ipass.eq.3) then
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if((ndecodes-n2).eq.0) cycle
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lsubtract=.true.
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ndeep=ndepth
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endif
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call timer('sync8 ',0)
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maxc=MAXCAND
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call sync8(dd,ifa,ifb,syncmin,nfqso,maxc,s,candidate, &
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ncand,sbase)
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call timer('sync8 ',1)
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do icand=1,ncand
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sync=candidate(3,icand)
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f1=candidate(1,icand)
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xdt=candidate(2,icand)
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xbase=10.0**(0.1*(sbase(nint(f1/3.125))-40.0))
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msg37=' '
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call timer('ft8b ',0)
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call ft8b(dd,newdat,nQSOProgress,nfqso,nftx,ndeep,nzhsym,lft8apon, &
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lapcqonly,napwid,lsubtract,nagain,ncontest,iaptype,mycall12, &
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hiscall12,f1,xdt,xbase,apsym2,aph10,nharderrors,dmin, &
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nbadcrc,iappass,msg37,xsnr,itone)
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call timer('ft8b ',1)
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nsnr=nint(xsnr)
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xdt=xdt-0.5
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hd=nharderrors+dmin
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if(nbadcrc.eq.0) then
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ldupe=.false.
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do id=1,ndecodes
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if(msg37.eq.allmessages(id)) ldupe=.true.
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enddo
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if(.not.ldupe) then
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ndecodes=ndecodes+1
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allmessages(ndecodes)=msg37
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allsnrs(ndecodes)=nsnr
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f1_save(ndecodes)=f1
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xdt_save(ndecodes)=xdt+0.5
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itone_save(1:NN,ndecodes)=itone
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endif
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if(.not.ldupe .and. associated(this%callback)) then
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qual=1.0-(nharderrors+dmin)/60.0 ! scale qual to [0.0,1.0]
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if(emedelay.ne.0) xdt=xdt+2.0
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call this%callback(sync,nsnr,xdt,f1,msg37,iaptype,qual)
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endif
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endif
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call timestamp(tsec,tseq,ctime)
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if(.not.ldiskdat .and. nzhsym.eq.41 .and. &
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tseq.ge.13.4d0) go to 800 !Bail out before done
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enddo ! icand
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enddo ! ipass
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800 ndec_early=0
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if(nzhsym.lt.50) ndec_early=ndecodes
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900 return
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end subroutine decode
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subroutine timestamp(tsec,tseq,ctime)
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real*8 tsec,tseq
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character*12 ctime
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integer itime(8)
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call date_and_time(values=itime)
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tsec=3600.d0*(itime(5)-itime(4)/60.d0) + 60.d0*itime(6) + &
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itime(7) + 0.001d0*itime(8)
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tsec=mod(tsec+2*86400.d0,86400.d0)
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tseq=mod(itime(7)+0.001d0*itime(8),15.d0)
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if(tseq.lt.10.d0) tseq=tseq+15.d0
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sec=itime(7)+0.001*itime(8)
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write(ctime,1000) itime(5)-itime(4)/60,itime(6),sec
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1000 format(i2.2,':',i2.2,':',f6.3)
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if(ctime(7:7).eq.' ') ctime(7:7)='0'
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return
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end subroutine timestamp
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end module ft8_decode
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