mirror of https://github.com/saitohirga/WSJT-X.git
235 lines
7.2 KiB
Fortran
235 lines
7.2 KiB
Fortran
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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use, intrinsic :: iso_c_binding
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use FFTW3
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include 'constants.f90'
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integer(C_INT) iret
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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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character wisfile*80
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integer :: arglen,stat,offset,remain,mode=0,flow=200,fsplit=2700,fhigh=4007,nrxfreq=1500,ntrperiod=1,ndepth=1
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logical :: shmem = .false., read_files = .false., have_args = .false., tx9 = .false., display_help = .false.
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type (option) :: long_options(16) = [ &
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option ('help', .false., 'h', 'Display this help message', ''), &
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option ('shmem', .true., 's', 'Use shared memory for sample data', '<key>'), &
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option ('tr-period', .true., 'p', 'Tx/Rx period, default=1', '<minutes>'), &
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option ('executable-path', .true., 'e', 'Location of subordinate executables (KVASD) default="."', '<path>'), &
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option ('data-path', .true., 'a', 'Location of writeable data files, detfault="."', '<path>'), &
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option ('temp-path', .true., 't', 'Temporary files path, default="."', '<path>'), &
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option ('lowest', .true., 'L', 'Lowest frequency decoded (JT65), default=200Hz', '<hertz>'), &
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option ('highest', .true., 'H', 'Highest frequency decoded, default=4007Hz', '<hertz>'), &
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option ('split', .true., 'S', 'Lowest JT9 frequency decoded, default=2700Hz', '<hertz>'), &
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option ('rx-frequency', .true., 'f', 'Receive frequency offset, default=1500', '<hertz>'), &
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option ('patience', .true., 'w', 'FFTW3 planing patience (0-4), default=1', '<patience>'), &
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option ('fft-threads', .true., 'm', 'Number of threads to process large FFTs, default=1', '<number>'), &
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option ('jt65', .false., '6', 'JT65 mode', ''), &
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option ('jt9', .false., '9', 'JT9 mode', ''), &
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option ('depth', .true., 'd', 'JT9 decoding depth (1-3), default=1', '<number>'), &
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option ('tx-jt9', .false., 'T', 'Tx mode is JT9, default=JT65', '') ]
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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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common/patience/npatience,nthreads
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common/decstats/num65,numbm,numkv,num9,numfano,infile
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data npatience/1/,nthreads/1/
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do
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call getopt('hs:e:a:r:m:p:d:f:w:t:96TL:S:H:',long_options,c,optarg,arglen,stat, &
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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 ('h')
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display_help = .true.
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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 ('t')
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temp_dir = optarg(:arglen)
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case ('m')
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read (optarg(:arglen), *) nthreads
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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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case ('L')
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read_files = .true.
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read (optarg(:arglen), *) flow
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case ('S')
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read_files = .true.
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read (optarg(:arglen), *) fsplit
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case ('H')
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read_files = .true.
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read (optarg(:arglen), *) fhigh
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case ('6')
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read_files = .true.
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if (mode.lt.65) mode = mode + 65
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case ('9')
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read_files = .true.
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if (mode.lt.9.or.mode.eq.65) mode = mode + 9
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case ('T')
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read_files = .true.
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tx9 = .true.
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case ('w')
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read (optarg(:arglen), *) npatience
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end select
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end do
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if (display_help .or. .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. &
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(shmem .and. read_files))) then
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print*,'Usage: jt9 -p <per> OPTIONS 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> [-w n] [-m n] [-e path] [-a path] [-t path]'
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print*,' Gets data from shared memory region with key==<key>'
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do i = 1, size (long_options)
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print*,''
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call long_options(i) % print (6)
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end do
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go to 999
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endif
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iret=fftwf_init_threads() !Initialize FFTW threading
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call fftwf_plan_with_nthreads(1) !Default to 1 thread but use nthreads for the big ones
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! Import FFTW wisdom, if available
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wisfile=trim(data_dir)//'/jt9_wisdom.dat'// C_NULL_CHAR
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iret=fftwf_import_wisdom_from_filename(wisfile)
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num65=0
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numbm=0
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numkv=0
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num9=0
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numfano=0
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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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nflatten=0
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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,nflatten,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,mode,tx9,flow,fsplit,fhigh)
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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 continue
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! Output decoder statistics
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write(12,1100) numbm,numkv,num65
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1100 format(/'JT65: ',i6,' BM and',i7,' KV in',i7,' attempts')
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write(12,1110) numfano,num9
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1110 format( 'JT9: ',i6,' Fano in',i7,' attempts')
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! Save wisdom and free memory
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iret=fftwf_export_wisdom_to_filename(wisfile)
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call four2a(a,-1,1,1,1)
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call filbig(a,-1,1,0.0,0,0,0,0,0) !used for FFT plans
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call fftwf_cleanup_threads()
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call fftwf_cleanup()
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end program jt9
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