mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-05 00:41:19 -05:00
8c9ed820c8
2. "/A" added to list of optional callsign suffixes. 3. Improved algorithm for measuring error in soundcard sample rates. 4. Optional 5-sec shift of input data, to catch some clock errors. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@274 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
74 lines
2.0 KiB
Fortran
74 lines
2.0 KiB
Fortran
subroutine extract(s3,nadd,ncount,decoded)
|
|
|
|
real s3(64,63)
|
|
character decoded*22
|
|
integer era(51),dat4(12),indx(63)
|
|
integer mrsym(63),mr2sym(63),mrprob(63),mr2prob(63)
|
|
logical first
|
|
data first/.true./,nsec1/0/
|
|
save
|
|
|
|
call demod64a(s3,nadd,mrsym,mrprob,mr2sym,mr2prob,ntest,nlow)
|
|
|
|
if(ntest.lt.50 .or. nlow.gt.20) then
|
|
ncount=-999 !Flag bad data
|
|
go to 900
|
|
endif
|
|
|
|
call graycode(mrsym,63,-1)
|
|
call interleave63(mrsym,-1)
|
|
call interleave63(mrprob,-1)
|
|
|
|
ndec=1
|
|
nemax=30
|
|
maxe=8
|
|
xlambda=15.0
|
|
|
|
if(ndec.eq.1) then
|
|
call graycode(mr2sym,63,-1)
|
|
call interleave63(mr2sym,-1)
|
|
call interleave63(mr2prob,-1)
|
|
|
|
nsec1=nsec1+1
|
|
write(22,rec=1) nsec1,xlambda,maxe,200,
|
|
+ mrsym,mrprob,mr2sym,mr2prob
|
|
call flushqqq(22)
|
|
call runqqq('kvasd.exe','-q',iret)
|
|
if(iret.ne.0) then
|
|
if(first) write(*,1000)
|
|
1000 format('Error in KV decoder, or no KV decoder present.'/
|
|
+ 'Using BM algorithm.')
|
|
ndec=0
|
|
first=.false.
|
|
go to 20
|
|
endif
|
|
read(22,rec=2) nsec2,ncount,dat4
|
|
decoded=' '
|
|
if(ncount.ge.0) then
|
|
call unpackmsg(dat4,decoded) !Unpack the user message
|
|
endif
|
|
endif
|
|
20 if(ndec.eq.0) then
|
|
call indexx(63,mrprob,indx)
|
|
do i=1,nemax
|
|
j=indx(i)
|
|
if(mrprob(j).gt.120) then
|
|
ne2=i-1
|
|
go to 2
|
|
endif
|
|
era(i)=j-1
|
|
enddo
|
|
ne2=nemax
|
|
2 decoded=' '
|
|
do nerase=0,ne2,2
|
|
call rs_decode(mrsym,era,nerase,dat4,ncount)
|
|
if(ncount.ge.0) then
|
|
call unpackmsg(dat4,decoded)
|
|
go to 900
|
|
endif
|
|
enddo
|
|
endif
|
|
|
|
900 return
|
|
end
|