mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-09-16 18:26:34 -04:00
f37ed4cd78
Pass the temporary directory to jt9 and use it to give the correct paths to temporary files. Also jt9 passes the absolute path to kvasd.dat in the temporary directory to kvasd. Clear out all the annoying cruft that has accumulated due to having to run with $CWD as the temporary directory. Use QStandardPaths to find the writable data directory where needed rather than passing it around between objects. This now works because the $CWD hasn't been changed. Do away with the CMake option WSJT_STANDARD_FILE_LOCATIONS as it is no longer needed. Fix astro status file azel.dat formatting. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4732 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
118 lines
3.2 KiB
Fortran
118 lines
3.2 KiB
Fortran
subroutine extract(s3,nadd,ncount,nhist,decoded,ltext,nbmkv)
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!subroutine extract(s3,nadd,nbirdie,afac1,xlambda,ncount,nhist,decoded, &
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! ltext,nbmkv,ntest)
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! Input:
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! s3 64-point spectra for each of 63 data symbols
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! nadd number of spectra summed into s3
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! Output:
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! ncount number of symbols requiring correction
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! nhist maximum number of identical symbol values
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! decoded decoded message (if ncount >=0)
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! ltext true if decoded message is free text
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! nbmkv 0=no decode; 1=BM decode; 2=KV decode
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use prog_args !shm_key, exe_dir, data_dir
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real s3(64,63)
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character decoded*22
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integer dat4(12)
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integer mrsym(63),mr2sym(63),mrprob(63),mr2prob(63)
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logical nokv,ltext
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data nokv/.false./,nsec1/0/
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save
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nbirdie=7
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npct=40
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afac1=10.1
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xlambda=8.0
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nbmkv=0
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nfail=0
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decoded=' '
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call pctile(s3,4032,npct,base)
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s3=s3/base
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! Get most reliable and second-most-reliable symbol values, and their
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! probabilities
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1 call demod64a(s3,nadd,afac1,mrsym,mrprob,mr2sym,mr2prob,ntest,nlow)
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if(ntest.lt.100) then
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ncount=-999 !Flag and reject bad data
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go to 900
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endif
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call chkhist(mrsym,nhist,ipk) !Test for birdies and QRM
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if(nhist.ge.nbirdie) then
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nfail=nfail+1
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call pctile(s3,4032,npct,base)
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s3(ipk,1:63)=base
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if(nfail.gt.30) then
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decoded=' '
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ncount=-1
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go to 900
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endif
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go to 1
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endif
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call graycode65(mrsym,63,-1) !Remove gray code and interleaving
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call interleave63(mrsym,-1) !from most reliable symbols
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call interleave63(mrprob,-1)
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! Decode using Berlekamp-Massey algorithm
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call timer('rs_decod',0)
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call rs_decode(mrsym,0,0,dat4,ncount)
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call timer('rs_decod',1)
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if(ncount.ge.0) then
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call unpackmsg(dat4,decoded)
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if(iand(dat4(10),8).ne.0) ltext=.true.
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nbmkv=1
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go to 900
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endif
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! Berlekamp-Massey algorithm failed, try Koetter-Vardy
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if(nokv) go to 900
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maxe=8 !Max KV errors in 12 most reliable symbols
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call graycode65(mr2sym,63,-1) !Remove gray code and interleaving
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call interleave63(mr2sym,-1) !from second-most-reliable symbols
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call interleave63(mr2prob,-1)
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nsec1=nsec1+1
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dat4=0
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write(22,rec=1) nsec1,xlambda,maxe,200,mrsym,mrprob,mr2sym,mr2prob
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write(22,rec=2) -1,-1,dat4
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call flush(22)
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call timer('kvasd ',0)
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#ifdef WIN32
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iret=system('""'//trim(exe_dir)//'/kvasd" "'//trim(temp_dir)//'/kvasd.dat" >"'//trim(temp_dir)//'/dev_null""')
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#else
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iret=system('"'//trim(exe_dir)//'/kvasd" "'//trim(temp_dir)//'/kvasd.dat" >/dev/null')
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#endif
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call timer('kvasd ',1)
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if(iret.ne.0) then
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if(.not.nokv) write(*,1000) iret
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1000 format('Error in KV decoder, or no KV decoder present.',i12)
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! nokv=.true.
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go to 900
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endif
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read(22,rec=2,err=900) nsec2,ncount,dat4
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j=nsec2 !Silence compiler warning
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decoded=' '
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ltext=.false.
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if(ncount.ge.0) then
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call unpackmsg(dat4,decoded) !Unpack the user message
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if(index(decoded,'...... ').gt.0) then
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ncount=-1
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go to 900
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endif
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if(iand(dat4(10),8).ne.0) ltext=.true.
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nbmkv=2
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endif
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900 return
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end subroutine extract
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