Release of unixcw version 3.6.1.
Changes since version 3.6.0:
libcw:
Fixing "cw timing" problem (commit faa8c85052b30a788672568cab083791f0043b78)
Problem:
Duration of inter-word-space was equal to 10 units, while it should have been 7 units.
As far as I know, the inter-word-space was not equal to 7 for many years.
Solution:
Add code that tracks enqueued spaces (primarily inter-mark-spaces and inter-character-spaces, but also inter-word-spaces), and use that tracker to decide how long an enqueued inter-word-space should really be.
Additional change that fixes the problem is with not enqueueing inter-character-space when inter-word-space was enqueued.
Tests:
Large part of commits done to the repo since last release was dedicated to expanding of testing capabilities of the libcw tests in area of generator, receiver and timings.
Some libcw tests have been improved and other tests have been added to automatically test some of libcw APIs that may be affected.
"simple receiver" type has been improved to make it more helpful in discovering problems with timings.
Automatic test in which generated samples are stored to disc file and then are analysed has been improved.
"Manual" tests have been executed where generated audio is captured by external program (Audacity) and the different timings of different marks and spaces are measured in the program to confirm that proper relations (1/3/7 units) are kept.
libcw's version has been changed from 7:0:0 to 8:0:0. The change in "current" number is caused by scope of changes to cw_gen_t type needed to fix "cw timing" issue. See Updating library version information for more information on libcw's versioning scheme.
If PulseAudio sound system is not available at runtime, libcw checks value of XDG_RUNTIME_DIR env variable and prints an information if the variable is empty. Empty variable may indicate incorrect configuration of PulseAudio in user's system.
Fixing minor issue with omitted checking of return value
from ALSA's snd_pcm_hw_params_set_periods().
General:
Fixing minor issues found during static code analysis.
Clearing up custom flags passed to ./configure script: all flags that enable features aiding a development of unixcw now start with --enable-dev-.
Compilation of cw and cwgen programs can be now disabled through ./configure's --disable-cw and --disable-cwgen flags. Similar flags for other unixcw programs were already present.
Default optimization and debug flags in CFLAGS have been changed from -g -O2 to -O2. This still can be overriden by setting CFLAGS env variable.
Default optimization and debug flags in CXXFLAGS have been changed from -g -O2 to -O2. This still can be overriden by setting CXXFLAGS env variable.
GNU GPL copyright notice printed by programs (e.g. when ran with "-v" option) is now more in line with information presented in How to Apply These Terms to Your New Programs. In other words the copyright notice is less custom and much more standard.
Quality Assurance:
Added automatic tests of following libcw functions:
cw_get_receive_parameters()cw_gen_enqueue_character_no_ics()Improved automatic tests of some of libcw functions.
All code is now compiled with -D_FORTIFY_SOURCE=1. In the future this will be upgraded to -D_FORTIFY_SOURCE=2.
Refactoring a script that tests all custom flags passed to ./configure script.
Improving helper files used for static code analysis. clang-tidy now has its global configuration file uses during analysis of code in entire package.
Adding automatic tests of cwgen. The tests cover a significant portion of cwgen's functionality and are executed during "make check". This greatly reduces need for manual tests of cwgen.
Adding automatic tests
of cwutils/combine_arguments().
Debian:
Integrated changes from Debian patch 0001-FTCBFS.patch: hardcoded pkg-config name is now replaced with $PKG_CONFIG in configure.ac.
Integrated changes from Debian patch 0004-reprotest_collate_make_fix.patch: language-independent sorting that allows reproducible builds.
unixcw now explicitly defines _FORTIFY_SOURCE in CFLAGS, with value '1'. This causes the following warning during compilation:
<command-line>: warning: "_FORTIFY_SOURCE redefined
<built-in>: note: this is the location of the previous definition
I plan to change value of _FORTIFY_SOURCE to '2' in next release of unixcw.
Copyright (C) 2011 - 2023 Kamil Ignacak