Cast C char array type to Fortran character string using TRANSFER.
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2. "Call 1st" label turns red when armed to respond to a caller.
3. Suppress some recognizable false decodes, send them to cumulative file
"data_dir/false_decodes.txt".
4. Reduce sleep delay in decoder() to 10 ms.
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The WAV file format allows for optional header content, allow for this
in preparation for adding some metadata to WSJT-X recorded WAV files.
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Re-factor the JT4, JT65 and JT9 decoders as Fortran modules using type
bound procedures, the decoder types implement a callback procedure
such that he client of the decoder can interpret the decode results as
they need.
The JT4 decoder has a second callback that delivers message averaging
status. Also the previously separate source files lib/jt4a.f90 and
lib/avg4.f90 have been merged into lib/jt4_decode.f90 as private type
bound procedures of the new jt4_decoder type.
Re-factored the lib/decoder.f90 subroutine to utilize the new decoder
types. Added local procedures to process decodes and averaging results
including the necessary OpenMP synchronization directives for parallel
JT9+JT65 decoding.
Added the jt65_test module which is a basic test harness for JT65
decoding. Re-factored the jt65 utility to utilize the new jt65_test
module.
Changed a few integers to logical variables where their meaning is
clearly binary.
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Groundwork for calling the decoders directly from C/C++ threads.
To access the timer module timer_module must now be used.
Instrumented code need only use the module function 'timer' which is
now a procedure pointer that is guaranteed to be associated (unless
null() is assigned to it, which should not be done). The default
behaviour of 'timer' is to do nothing.
If a Fortran program wishes to profile code it should now use the
timer_impl module which contains a default timer implementation. The
main program should call 'init_timer([filename])' before using 'timer'
or calling routines that are instrumented. If
'init_timer([filename])'. If it is called then an optional file name
may be provided with 'timer.out' being used as a default. The
procedure 'fini_timer()' may be called to close the file.
The default timer implementation is thread safe if used with OpenMP
multi-threaded code so long as the OpenMP thread team is given the
copyin(/timer_private/) attribute for correct operation. The common
block /timer_private/ should be included for OpenMP use by including
the file 'timer_common.inc'.
The module 'lib/timer_C_wrapper.f90' provides a Fortran wrapper along
with 'init' and 'fini' subroutines which allow a C/C++ application to
call timer instrumented Fortran code and for it to receive callbacks
of 'timer()' subroutine invocations. No C/C++ timer implementation is
provided at this stage.
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Made default values for decoding parameters better in standalone jt65
tool.
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Also use correct C binding and have compilers determine sizes and
offsets.
The wsjtx.exe program now owns the decoder shared data that is shared
with symspec. It is now in struct dec_data, still a global variable
for now but hopefully a MainWindow member variable soon.
The struct dec_data (in both C/C++ and Fortran) has a sub structure
with the decoder parameters which enables copying and manipulating a
lot cleaner.
New of changed types of shared data must still be modified in
commons.h and a new file lib/jt9com.f90, they must stay in sync as a
pointer to the structure is passed between C and Fortran.
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Build script now builds jt65. The tools jt65 and jt65sim usilize the
options module for all comamnd line parsing.
The tool jt65sim now has conventinal command line options and
switchs. Default values have been added where appropriate and options
documentation updated. An option to disable PRNG seeding has been
added.
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This merge brings the WSPR feature development into the main line
ready for release in a future v1.6 release.
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Better AFC (wider range of possible drifts; more accurate DT alignment).
Better definition of metric tables used by Fano decoder.
Zero-centeres soft symbols, instead of offset +128.
Tuned several empirical parameters.
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Options have been added to control frequency cut off values, mode and, Tx mode.
The comand line parser now has optional long option names and usage help.
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The long FFTs can now use the multi-threaded FFTW routines.
Subroutine decode9.f90 was renamed jt9fano.f90.
The JT9 decoder's top-level functions were removed from decoder.f90
and put into a separate subroutine decjt90.f90.
Subroutine decoder.f90 is now configured for possible use of OpenMP
SECTIONS, with the JT9 and JT65 decoders running concurrently on
a multi-core machine. Note, however, that this concurrent processing
is not yet fully implemented. Probably calls to timer need to be removed;
some variables used in calls to jt65a and decjt9 may need to be
declared PRIVATE in decoder; some sections probably need to be declared
CRITICAL; probably some SAVE statements in downstream routines have
made them not thread-safe; etc., etc.
I'm a neophyte at using OpenMP. Comments, suggestions, and/or tests by
others will be welcome!
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New command-line option for jt9: [-m nthreads]. Default is nthreads=1.
Also refactored a loop in filbig.f90 that was taking far too much
time.
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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.
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Also complete the wrapper code in wisdom.c.
TBD: should be possible to use fftw3f.f03 instead of the ad hoc wisdom.c.
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New optional argument to jt9: -w patience
Default is patience = 1
Example timing measurements for 130610_2343.wav:
patience plan execute
(s) (s)
-----------------------------------------------
0 0.01 1.25 FFTW_ESTIMATE
1 0.69 1.25 FFTW_ESTIMATE_PATIENT
2 16.97 1.15 FFTW_MEASURE
3 390.88 1.15 FFTW_PATIENT
Conclusions, consistent with expectation based on past experience
with similar FFTs:
- First decode (in each mode) with patience = 2 is slow.
- Speed advantage of patience = 2 is small but measurable.
- No measurable advantage in using patience > 2.
Present mainwindow.cpp has "-w 1" hard-wired.
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Steve Franke
Bill Somerville
Joe Taylor