mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-12-18 08:55:53 -05:00
62 lines
1.4 KiB
Fortran
62 lines
1.4 KiB
Fortran
|
subroutine extract4(sym,nadd,ncount,decoded)
|
||
|
|
|
||
|
|
real sym(207)
|
||
|
|
character decoded*22, submode*1
|
||
|
|
character*72 c72
|
||
|
|
integer*1 symbol(207)
|
||
|
|
integer*1 data1(13) !Decoded data (8-bit bytes)
|
||
|
|
integer data4a(9) !Decoded data (8-bit bytes)
|
||
|
|
integer data4(12) !Decoded data (6-bit bytes)
|
||
|
|
integer mettab(0:255,0:1) !Metric table
|
||
|
|
logical first
|
||
|
|
data first/.true./
|
||
|
|
save first,mettab
|
||
|
|
|
||
|
|
if(first) then
|
||
|
|
call getmet24(mode,mettab)
|
||
|
|
first=.false.
|
||
|
|
endif
|
||
|
|
|
||
|
|
do j=1,207
|
||
|
|
r=sym(j) + 128.
|
||
|
|
if(r.gt.255.0) r=255.0
|
||
|
|
if(r.lt.0.0) r=0.0
|
||
|
|
i4=nint(r)
|
||
|
|
if(i4.gt.127) i4=i4-256
|
||
|
|
symbol(j)=i4
|
||
|
|
enddo
|
||
|
|
|
||
|
|
nbits=72+31
|
||
|
|
ndelta=50
|
||
|
|
limit=100000
|
||
|
|
ncycles=0
|
||
|
|
ncount=-1
|
||
|
|
decoded=' '
|
||
|
|
submode=' '
|
||
|
|
|
||
|
|
call interleave24(symbol(2),-1) !Remove the interleaving
|
||
|
|
call fano232(symbol(2),nbits,mettab,ndelta,limit,data1,ncycles,metric,ncount)
|
||
|
|
nlim=ncycles/nbits
|
||
|
|
|
||
|
|
if(ncount.ge.0) then
|
||
|
|
do i=1,9
|
||
|
|
i4=data1(i)
|
||
|
|
if(i4.lt.0) i4=i4+256
|
||
|
|
data4a(i)=i4
|
||
|
|
enddo
|
||
|
|
write(c72,1100) (data4a(i),i=1,9)
|
||
|
|
1100 format(9b8.8)
|
||
|
|
read(c72,1102) data4
|
||
|
|
1102 format(12b6)
|
||
|
|
|
||
|
|
call unpackmsg(data4,decoded)
|
||
|
|
submode=char(ichar('A')+ich-1)
|
||
|
|
if(decoded(1:6).eq.'000AAA') then
|
||
|
|
decoded='***WRONG MODE?***'
|
||
|
|
ncount=-1
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
|
||
|
|
return
|
||
|
|
end subroutine extract4
|