v1.0.1

• Fixes:
  • Fix a crash (uncaught json exception) when attempting to serialize a string that's invalid UTF-8, e.g. if long PS gets corrupted
  • Fix build when the installed version of nlohmann-json is too old (#113)
  • Fix a couple of integer overflows, one affecting the subcarrier reset functionality (of #94) after 3.5 hours of runtime and another one causing a potential sync glitch after 41 days of constant data

See also our recent big maintenance update 1.0.0.

redsea 1.0

Redsea has come a long way and it's time to finally call it a 1.0!

This quality-focused release includes significant maintainability improvements from unit testing to build automation and .deb packaging. It also adds support for a couple of RDS text channels and makes redsea less likely to show incorrect PI codes in very noisy signals.

Note that redsea is now built with meson instead of autotools; you can find instructions in the Readme just as before.

• ✨ New features:
  • Add support for Enhanced RadioText (eRT)
  • Add support for Long PS in Group 15A (#104)
  • Add runtime option --no-fec for disabling error correction
• 📱 UX changes:
  • ❗️ Breaking: Print a warning to stderr if the raw MPX input sample rate is
    not specified (breaks the previous silent assumption of 171 kHz)
  • Improve error reporting in general
  • Add --output hex (same as --output-hex) to mirror --input hex
• 🔧 Fixes:
  • Fix detection of invalid date/time (timestamps >2000 years ago)
  • Noise resistance improvements (#106):
    • Require three (instead of two) repeats of a new PI before accepting it for the JSON output
    • Require three (instead of two) synchronization pulses before locking
• 🚧 Maintainability:
  • Migrate build system from autotools to meson (#90)
  • Switch from patched, packaged-in JsonCPP to external nlohmann-json (#109)
    • ❗️ Breaking: The order of some JSON elements has changed (insertion order
      instead of alphabetical)
  • Add automated CI builds for macOS, Windows (MSYS2/MinGW + Cygwin), Ubuntu-latest, Debian Buster
  • Add Debian packaging (#101)
  • Add basic Catch2 unit tests (#84)
  • Add .clang-format (not automated)
  • Remove unmaintained build options for non-liquid, non-TMC builds
  • Fix compiler warnings, issues identified via static analysis, and other code cleanup

v0.21

• Add support for decoding LTCC and LTECC in TMC (#80)
• Add support for decoding RDS output from the TEF6686 tuner (#89)
• Add support for Alternative Frequencies Method B (#88)
• Breaking: Change the name of the field alt_kilohertz to either alt_frequencies_a or alt_frequencies_b. The type of data sent by these methods differs. When --show-partial is set, the AF list will be in partial_alt_frequencies regardless of method.
• Add option --input / -i to specify the stdin input format (bits, hex, mpx, tef). The old options will still work.
• Fix automake script on Windows (#81)
• Fix compatibility with current liquid-dsp (#78)
• Fix output for UTF-8 encoded TMC location tables (#82)
• Fix clock_time displaying wrong date around midnight (#83)
• Fix misinterpretation of the Decoder Identification bits (#87)
• Fix decoding of RadioText for stations that don't use string terminators (#77)
• Fix an off-by-one bug in the RadioText decoder that sometimes caused missing characters at the end of messages
• Fix runaway PLL after digital silence by clamping the phase error (#94)

v0.20

• Recognize more ODAs and features - thanks Andreas Mikula
• Add support for PTY names (group 10A)
• Add partial support for DAB cross-referencing (ODA 0x0093)
• Add support for raw broadcaster data in EON (variant 15)
• Add support for transparent data channels (groups 5A, 5B)
• Add support for fractional seconds in the rx timestamp format (%f).
• Add support for TMC tuning info variant 8
• Add buffer delay compensation to rx timestamps. Timestamps aim to represent
  the time the PCM samples were read in.
• Place some JSON fields in the beginning of the line for easier visual
  inspection (pi, group, ps...)
• Print raw ODA data if the application is not supported

v0.19

• Add option --show-raw (-R) for including the raw group data as a hex string in the JSON output
• Print usage help if there are non-option arguments on the command line
• Fix uninitialized block error rate values on some systems
• Update jsoncpp from 1.8.1 to 1.8.4 to fix some warnings

v0.18

• Add support for loading multiple TMC location databases by specifying --loctable more than once.
• Sample rate can also be specified as -r 171k instead of -r 171000.
• Fix a crash if the input audio file couldn't be loaded.
• Print usage help instead of error message when stdin is empty.
• Speed up loading of TMC location database.
• Improve block sync detection by ignoring spurious sync pulses.
• Fine-tune filter bandwidths for better sensitivity, based on test runs.
• At EOF, process the last partially received group.
• Remove character codetables G1 and G2 since they don't appear in the latest RDS standard any more.
• Clean up code to ensure maintainability. Redsea now requires a compiler that supports C++14.

v0.17.1

Bugfix release.

• Return exit value 0 if --version or --help was requested
• Don't open stdout for libsndfile unless --feed-through was specified, otherwise json can't be written (this may break the feed-through on Linux temporarily)

v0.17.0

• Change the type of the JSON field for TMC message urgency, from integer (0, 1, 2) to string ("none", "U", "X"), to better match its values in the specification
• Speed improvements by avoiding a few extraneous buffer copies internally

v0.16.0

• Add support for multi-channel signals (--channels) - libsndfile is now
  a required dependency
• Speed improvements:
  • By using a lookup table instead of sinf/cosf to generate the
    mix-down sinusoid
  • By only using one mix-down operation instead of two

v0.15.0

• Add prog_item_number field containing the raw Program Item Number
• Add partial_alt_kilohertz field containing an incomplete list of
  alternative frequencies when the --show-partial option is used
• Add configure option --without-macports to disable directory checks
  when cross-compiling
• Reduce write calls to output JSON stream using a streamstring (#56)
• Remove an old shell script that launches rtl_fm - instead, there is
  a mention of rtl_fm usage in the readme and wiki