323 lines
12 KiB
Plaintext
323 lines
12 KiB
Plaintext
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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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use, intrinsic :: iso_c_binding
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use FFTW3
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use timer_module, only: timer
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use timer_impl, only: init_timer, fini_timer
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use readwav
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include 'jt9com.f90'
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integer(C_INT) iret
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type(wav_header) wav
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real*4 s(NSMAX)
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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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!### ndepth was defined as 60001. Why???
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integer :: arglen,stat,offset,remain,mode=0,flow=200,fsplit=2700, &
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fhigh=4000,nrxfreq=1500,ntrperiod=1,ndepth=1,nexp_decode=0
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logical :: read_files = .true., tx9 = .false., display_help = .false.
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type (option) :: long_options(25) = [ &
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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 MINUTES=1', &
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'MINUTES'), &
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option ('executable-path', .true., 'e', &
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'Location of subordinate executables (KVASD) default PATH="."', &
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'PATH'), &
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option ('data-path', .true., 'a', &
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'Location of writeable data files, default PATH="."', 'PATH'), &
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option ('temp-path', .true., 't', &
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'Temporary files path, default PATH="."', 'PATH'), &
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option ('lowest', .true., 'L', &
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'Lowest frequency decoded (JT65), default HERTZ=200', 'HERTZ'), &
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option ('highest', .true., 'H', &
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'Highest frequency decoded, default HERTZ=4007', 'HERTZ'), &
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option ('split', .true., 'S', &
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'Lowest JT9 frequency decoded, default HERTZ=2700', 'HERTZ'), &
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option ('rx-frequency', .true., 'f', &
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'Receive frequency offset, default HERTZ=1500', 'HERTZ'), &
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option ('patience', .true., 'w', &
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'FFTW3 planing patience (0-4), default PATIENCE=1', 'PATIENCE'), &
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option ('fft-threads', .true., 'm', &
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'Number of threads to process large FFTs, default THREADS=1', &
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'THREADS'), &
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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 ('ft8', .false., '8', 'FT8 mode', ''), &
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option ('jt4', .false., '4', 'JT4 mode', ''), &
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option ('qra64', .false., 'q', 'QRA64 mode', ''), &
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option ('sub-mode', .true., 'b', 'Sub mode, default SUBMODE=A', 'A'), &
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option ('depth', .true., 'd', &
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'JT9 decoding depth (1-3), default DEPTH=1', 'DEPTH'), &
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option ('tx-jt9', .false., 'T', 'Tx mode is JT9', ''), &
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option ('my-call', .true., 'c', 'my callsign', 'CALL'), &
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option ('my-grid', .true., 'G', 'my grid locator', 'GRID'), &
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option ('his-call', .true., 'x', 'his callsign', 'CALL'), &
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option ('his-grid', .true., 'g', 'his grid locator', 'GRID'), &
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option ('experience-decode', .true., 'X', &
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'experience based decoding flags (1..n), default FLAGS=0', &
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'FLAGS') ]
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type(dec_data), allocatable :: shared_data
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character(len=12) :: mycall, hiscall
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character(len=6) :: mygrid, hisgrid
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common/patience/npatience,nthreads
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common/decstats/ntry65a,ntry65b,n65a,n65b,num9,numfano
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data npatience/1/,nthreads/1/
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nsubmode = 0
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do
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call getopt('hs:e:a:b:r:m:p:d:f:w:t:9864qTL:S:H:c:G:x:g:X:', &
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long_options,c,optarg,arglen,stat,offset,remain,.true.)
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if (stat .ne. 0) then
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exit
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end if
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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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read_files = .false.
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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 ('b')
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nsubmode = ichar (optarg(:1)) - ichar ('A')
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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 (optarg(:arglen), *) ntrperiod
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case ('d')
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read (optarg(:arglen), *) ndepth
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case ('f')
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read (optarg(:arglen), *) nrxfreq
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case ('L')
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read (optarg(:arglen), *) flow
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case ('S')
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read (optarg(:arglen), *) fsplit
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case ('H')
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read (optarg(:arglen), *) fhigh
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case ('q')
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mode = 164
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case ('4')
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mode = 4
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case ('6')
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if (mode.lt.65) mode = mode + 65
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case ('9')
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if (mode.lt.9.or.mode.eq.65) mode = mode + 9
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case ('8')
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mode = 8
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case ('T')
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tx9 = .true.
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case ('w')
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read (optarg(:arglen), *) npatience
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case ('c')
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read (optarg(:arglen), *) mycall
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case ('G')
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read (optarg(:arglen), *) mygrid
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case ('x')
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read (optarg(:arglen), *) hiscall
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case ('g')
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read (optarg(:arglen), *) hisgrid
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case ('X')
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read (optarg(:arglen), *) nexp_decode
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end select
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end do
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if (display_help .or. stat .lt. 0 &
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.or. (.not. read_files .and. remain .gt. 0) &
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.or. (read_files .and. remain .lt. 1)) then
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print *, 'Usage: jt9 [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 patience] [-m threads] [-e path] [-a path] [-t path]'
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print *, ' Gets data from shared memory region with key==<key>'
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print *, ''
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print *, 'OPTIONS:'
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print *, ''
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do i = 1, size (long_options)
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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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! Default to 1 thread, but use nthreads for the big ones
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call fftwf_plan_with_nthreads(1)
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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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open(19,file=trim(data_dir)//'/false_decodes.txt',status='unknown', &
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position='append')
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ntry65a=0
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ntry65b=0
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n65a=0
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n65b=0
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num9=0
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numfano=0
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if (.not. read_files) then
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call jt9a() !We're running under control of WSJT-X
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go to 999
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endif
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allocate(shared_data)
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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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call wav%read (infile)
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nfsample=wav%audio_format%sample_rate
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i1=index(infile,'.wav')
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if(i1.lt.1) i1=index(infile,'.WAV')
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if(infile(i1-5:i1-5).eq.'_') then
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read(infile(i1-4:i1-1),*,err=1) nutc
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else
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read(infile(i1-6:i1-1),*,err=1) nutc
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endif
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go to 2
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1 nutc=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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shared_data%params%nzhsym=181
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else if(ntrperiod.eq.2) then
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nsps=15360
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shared_data%params%nzhsym=178
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else if(ntrperiod.eq.5) then
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nsps=40960
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shared_data%params%nzhsym=172
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else if(ntrperiod.eq.10) then
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nsps=82944
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shared_data%params%nzhsym=171
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else if(ntrperiod.eq.30) then
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nsps=252000
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shared_data%params%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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call init_timer (trim(data_dir)//'/timer.out')
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call timer('jt9 ',0)
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endif
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shared_data%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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if(mode.eq.8 .and. k.gt.179712) exit
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call timer('read_wav',0)
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read(unit=wav%lun,end=3) shared_data%id2(k-kstep+1:k)
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go to 4
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3 call timer('read_wav',1)
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print*,'EOF on input file ',infile
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exit
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4 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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if(mode.eq.9 .or. mode.eq.74) then
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! Compute rough symbol spectra for the JT9 decoder
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ingain=0
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call timer('symspec ',0)
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nminw=1
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call symspec(shared_data,k,ntrperiod,nsps,ingain,nminw,pxdb, &
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s,df3,ihsym,npts8,pxdbmax)
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call timer('symspec ',1)
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endif
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nhsym0=nhsym
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if(nhsym.ge.181) exit
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endif
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enddo
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close(unit=wav%lun)
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shared_data%params%nutc=nutc
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shared_data%params%ndiskdat=.true.
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shared_data%params%ntr=60
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shared_data%params%nfqso=nrxfreq
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shared_data%params%newdat=.true.
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shared_data%params%npts8=74736
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shared_data%params%nfa=flow
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shared_data%params%nfsplit=fsplit
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shared_data%params%nfb=fhigh
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shared_data%params%ntol=20
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shared_data%params%kin=64800
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shared_data%params%nzhsym=181
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shared_data%params%ndepth=ndepth
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shared_data%params%lapon=.true.
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shared_data%params%napwid=75
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shared_data%params%dttol=3.
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! shared_data%params%minsync=0 !### TEST ONLY
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! shared_data%params%nfqso=1500 !### TEST ONLY
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! mycall="G3WDG " !### TEST ONLY
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! hiscall="VK7MO " !### TEST ONLY
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! hisgrid="QE37 " !### TEST ONLY
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if(mode.eq.164 .and. nsubmode.lt.100) nsubmode=nsubmode+100
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shared_data%params%naggressive=0
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shared_data%params%n2pass=2
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! shared_data%params%nranera=8 !### ntrials=10000
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shared_data%params%nranera=6 !### ntrials=3000
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shared_data%params%nrobust=.false.
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shared_data%params%nexp_decode=nexp_decode
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shared_data%params%mycall=mycall
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shared_data%params%mygrid=mygrid
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shared_data%params%hiscall=hiscall
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shared_data%params%hisgrid=hisgrid
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if (shared_data%params%mycall == '') shared_data%params%mycall='K1ABC'
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if (shared_data%params%hiscall == '') shared_data%params%hiscall='W9XYZ'
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if (shared_data%params%hisgrid == '') shared_data%params%hiscall='EN37'
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if (tx9) then
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shared_data%params%ntxmode=9
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else
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shared_data%params%ntxmode=65
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end if
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if (mode.eq.0) then
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shared_data%params%nmode=65+9
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else
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shared_data%params%nmode=mode
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end if
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shared_data%params%nsubmode=nsubmode
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shared_data%params%datetime="2013-Apr-16 15:13" !### Temp
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if(mode.eq.9 .and. fsplit.ne.2700) shared_data%params%nfa=fsplit
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call multimode_decoder(shared_data%ss,shared_data%id2,shared_data%params,nfsample)
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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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999 continue
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! Output decoder statistics
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call fini_timer ()
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! open (unit=12, file=trim(data_dir)//'/timer.out', status='unknown', position='append')
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! write(12,1100) n65a,ntry65a,n65b,ntry65b,numfano,num9
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!1100 format(58('-')/' JT65_1 Tries_1 JT65_2 Tries_2 JT9 Tries'/ &
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! 58('-')/6i8)
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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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