2014-04-16 12:43:52 -04:00
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program jt9
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! Decoder for JT9. Can run stand-alone, reading data from *.wav files;
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! or as the back end of wsjt-x, with data placed in a shared memory region.
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use options
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use prog_args
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include 'constants.f90'
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integer*4 ihdr(11)
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real*4 s(NSMAX)
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integer*2 id2
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character c
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character(len=500) optarg, infile
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integer*4 arglen,stat,offset,remain
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logical :: shmem = .false., read_files = .false., have_args = .false.
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type (option) :: long_options (0)
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common/jt9com/ss(184,NSMAX),savg(NSMAX),id2(NMAX),nutc,ndiskdat,ntr, &
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mousefqso,newdat,nfa,nfsplit,nfb,ntol,kin,nzhsym,nsynced,ndecoded
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common/tracer/limtrace,lu
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do
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call getopt('s:e:a:r:p:d:f:',long_options,c,optarg,arglen,stat,offset,remain)
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if (stat .ne. 0) then
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exit
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end if
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have_args = .true.
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select case (c)
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case ('s')
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shmem = .true.
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shm_key = optarg(:arglen)
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case ('e')
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exe_dir = optarg(:arglen)
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case ('a')
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data_dir = optarg(:arglen)
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case ('p')
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read_files = .true.
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read (optarg(:arglen), *) ntrperiod
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case ('d')
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read_files = .true.
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read (optarg(:arglen), *) ndepth
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case ('f')
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read_files = .true.
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read (optarg(:arglen), *) nrxfreq
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end select
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end do
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if (.not. have_args .or. (stat .lt. 0 .or. (shmem .and. remain .gt. 0) &
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.or. (read_files .and. remain .eq. 0) .or. (shmem .and. read_files))) then
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print*,'Usage: jt9 -p TRperiod -d ndepth -f rxfreq -e exe_dir file1 [file2 ...]'
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print*,' Reads data from *.wav files.'
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print*,''
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print*,' jt9 -s <key> -e exe_dir'
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print*,' Gets data from shared memory region with key==<key>'
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go to 999
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endif
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if (shmem) then
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call jt9a()
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go to 999
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endif
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limtrace=0
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lu=12
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do iarg = offset + 1, offset + remain
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call get_command_argument (iarg, optarg, arglen)
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infile = optarg(:arglen)
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open(10,file=infile,access='stream',status='old',err=998)
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read(10) ihdr
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nutc0=ihdr(1) !Silence compiler warning
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i1=index(infile,'.wav')
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read(infile(i1-4:i1-1),*,err=1) nutc0
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go to 2
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1 nutc0=0
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2 nsps=0
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if(ntrperiod.eq.1) then
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nsps=6912
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nzhsym=173
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else if(ntrperiod.eq.2) then
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nsps=15360
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nzhsym=178
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else if(ntrperiod.eq.5) then
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nsps=40960
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nzhsym=172
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else if(ntrperiod.eq.10) then
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nsps=82944
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nzhsym=171
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else if(ntrperiod.eq.30) then
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nsps=252000
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nzhsym=167
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endif
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if(nsps.eq.0) stop 'Error: bad TRperiod'
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kstep=nsps/2
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k=0
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nhsym0=-999
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npts=(60*ntrperiod-6)*12000
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if(iarg .eq. offset + 1) then
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open(12,file=trim(data_dir)//'/timer.out',status='unknown')
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call timer('jt9 ',0)
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endif
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id2=0 !??? Why is this necessary ???
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do iblk=1,npts/kstep
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k=iblk*kstep
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call timer('read_wav',0)
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read(10,end=10) id2(k-kstep+1:k)
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call timer('read_wav',1)
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nhsym=(k-2048)/kstep
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if(nhsym.ge.1 .and. nhsym.ne.nhsym0) then
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! Emit signal readyForFFT
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ingain=0
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call timer('symspec ',0)
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call symspec(k,ntrperiod,nsps,ingain,slope,pxdb,s,df3,ihsym,npts8)
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call timer('symspec ',1)
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nhsym0=nhsym
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if(ihsym.ge.173) go to 10
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endif
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enddo
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10 close(10)
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call fillcom(nutc0,ndepth,nrxfreq)
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call decoder(ss,id2)
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enddo
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call timer('jt9 ',1)
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call timer('jt9 ',101)
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go to 999
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998 print*,'Cannot open file:'
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print*,infile
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999 end program jt9
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