WSJT-X/recvpkt.F90

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2.8 KiB
Fortran
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!---------------------------------------------------- recvpkt
subroutine recvpkt(iarg)
! Receive timf2 packets from Linrad, stuff data into id().
! This routine runs in a background thread and will never return.
!#ifdef Win32
! use dflib
!#endif
parameter (NSZ=2*60*96000)
real*8 d8(NSZ)
integer*1 userx_no,iusb
integer*2 nblock,nblock0
integer txnow
logical first
real*8 center_freq,buf8
common/plrscom/center_freq,msec,fqso,iptr,nblock,userx_no,iusb,buf8(174)
include 'datcom.f90'
include 'gcom1.f90'
include 'gcom2.f90'
equivalence (id,d8)
data nblock0/0/,first/.true./,kb/1/,ntx/0/,npkt/0/,nw/0/
data sqave/0.0/,u/0.001/,rxnoise/0.0/,kbuf/1/
save
call setup_rsocket ! Open socket to receive multicast data
nreset=-1
k=0
nsec0=-999
10 call recv_pkt(center_freq)
isec=mid_sec()
imin=isec/60
if((monitoring.eq.0) .or. (lauto.eq.1 .and. mod(imin,2).eq.(1-TxFirst))) then
first=.true.
go to 10
endif
lost=nblock-nblock0-1
nblock0=nblock
if(lost.ne.0 .and. .not.first) then
! print*,'Lost packets:',nblock,nblock0,lost
nlost=nlost + lost ! Insert zeros for the lost data.
do i=1,174*lost
k=k+1
d8(k)=0
enddo
endif
first=.false.
nsec=msec/1000
if(mod(nsec,60).eq.1) nreset=1
if(mod(nsec,60).eq.0 .and. nreset.eq.1) then
! This is the start of a new minute, switch buffers
nreset=0
kb=3-kb
k=0
if(kb.eq.2) k=NSMAX
nlost=0
endif
if(kb.eq.1 .and. (k+174).gt.NSMAX) go to 20
if(kb.eq.2 .and. (k+174).gt.2*NSMAX) go to 20
sq=0.
do i=1,174
k=k+1
d8(k)=buf8(i)
sq=sq + float(int(id(1,k,1)))**2 + float(int(id(1,k,1)))**2 + &
float(int(id(1,k,1)))**2 + float(int(id(1,k,1)))**2
enddo
sqave=sqave + u*(sq-sqave)
rxnoise=10.0*log10(sqave) - 48.0
if(mode.eq.'Measur') then
npkt=npkt+1
if(npkt.ge.551) then
npkt=0
nw=nw+1
write(11,1000) nw,rxnoise
1000 format(i6,f8.2)
call flushqqq(11)
ndecdone=1
write(24,1000) nw,rxnoise
endif
else
nw=0
endif
if(k.lt.1 .or. k.gt.NSZ) then
print*,'Error in recvpkt: ',k,NSZ,NSMAX
stop
endif
20 if(nsec.ne.nsec0) then
mutch=nsec/3600
mutcm=mod(nsec/60,60)
mutc=100*mutch + mutcm
ns=mod(nsec,60)
nsec0=nsec
ntx=ntx+transmitting
if(ns.eq.48) then
nutc=mutc
kbuf=kb
kk=k
ndiskdat=0
write(*,3001) nutc,mod(mid_sec(),60),ns !,kk,kbuf,kkdone
3001 format('recvpkt 1:',i5.4,2i3.2)
endif
if(ns.eq.52) then
kk=k
write(*,3002) nutc,mod(mid_sec(),60),ns !,kk,kbuf,kkdone
3002 format('recvpkt 2:',i5.4,2i3.2)
endif
endif
go to 10
end subroutine recvpkt