v5.0.0

New features

• Use stdx::error for error reporting until C++26 and std::error are widely available :-)
• Hunt exceptions down
• MIDI 2 support on Windows with the Windows MIDI Services.
  • Using Developer Preview 9: https://github.com/microsoft/MIDI/releases/
  • Works on both MSVC and MinGW / MSYS2.
• WinUWP support on MinGW / MSYS2.
• Getters for USB location, etc. in libremidi::port_information.
• Reverse-engineered implementation of Mackie Control Universal & Logic Control protocols. Tested with TouchMCU and a BCF2000.
• C API for bindings to other languages (libremidi-c.h).
• Python binding.
• Haskell binding courtesy of @ejconlon λ!
• Java binding courtesy of @atsushieno!
• Support for getting raw, unfiltered MIDI data (e.g. no SYSEX recombination logic).
• Computer Keyboard backend to easily map scancodes to keyboard-like MIDI maps ⌨.
• Network backend to send MIDI 1 and UMP packets over OSC 🛜.
• libremidi finally supports MIDI 2 on all desktop platforms 🎉!

v4.5.0

New features

• Remade and extended the documentation: https://celtera.github.io/libremidi
• Experimental PipeWire back-end

Changes

• MIDI 1 logic refactored across all back-ends to make sure they all behave exactly the same wrt timestamping and filtering.

v4.4.0

New features

• Add Debian (bullseye, bookworm, trixie) to the CI to make sure ALSA UMP and RawMidi support gets tested
• Fix iOS support and add iOS CI (thanks @fwcd !)
• Add compatibility with ni-midi2: the libremidi::ump type will convert automatically from / to midi::universal_packet and it is possible to send directly some ni-midi2 data types through libremidi::midi_out
• Added an example of very basic MIDI-CI interoperation with MIDI2.0Workbench: https://github.com/jcelerier/libremidi/blob/master/examples/midi2_interop.cpp
• Observer: add a track_any flag to track MIDI ports that are not reported as being hardware or software.
• UMP: allow send_ump to handle UMP streams, not only single UMP packets.

Bugfixes

• Fix sysex concatenation on WinMM
• Various MIDI 2-related fixes across the entire stack
• Work-in-progress on RawMidi MIDI2 backend - output should work, input not there yet. Testing and reporting issues highly appreciated!
• Some compatibility bugfixes, better detection of available features in cmake

Other

• Revamp and cleanup the cmake backends in separate files for clarity.

v4.3.0

• Improvements to timing handling:

  • Added a Custom timestamping mechanism which allows the user to provide a custom callback to run timestamping as close as possible to the event's reception.
  • Added midi_in::absolute_timestamp() to get the origin timestamp for driver-provided ticks as accurately as possible.
    • e.g. in practice this is taking the time just near the ALSA queue creation or WinMM MIDI open.

• Bugfixes in JACK

• Many warning fixes - thanks @lilggamegenius for the extensive work!

• Fix MIDI dump example - thanks @chdiesch!

• Add SOVERSION to dynamic library