libremidi_flutter 0.8.6

Cross-platform MIDI device access for Flutter. Supports macOS, iOS, Android, Windows, and Linux with hotplug detection.

Changelog

0.8.6

Fixed

• iOS and macOS did not work in released apps. Depending on the build system the plugin either shipped without its native code or had its symbols stripped, both failing at runtime with Failed to lookup symbol 'lrm_...'. Both build systems are fixed and verified.
• Windows fell back to WinUWP instead of Windows MIDI Services, because the bundled SDK headers were missing from the published package. Also affected 0.8.5.
• Reliability work in the native layer across all platforms: closing ports and observers, hotplug handling, Android's asynchronous device opening, and error reporting. Failed opens and sends previously reported success; they now surface as exceptions.

Added

• MidiMessageBuilder — the byte builders behind every MidiOutput.send* method, usable without an open port.
• MidiObserver.hotplugAvailable / LibremidiFlutter.hotplugAvailable to detect the case where hotplug cannot be delivered, so an app can fall back to polling.

Changed

• Port ids changed on Windows MIDI Services and Android. They were derived from values that shifted when devices were added or removed. Persist a selection with MidiPort.toMatchJson and restore it with findClosestPort rather than storing portId.
• MidiMessage.timestamp is documented as nanoseconds, which is what it has always been — the previous "microseconds" was a documentation error. Values are unchanged.
• Dart SDK constraint raised to ^3.7.0, which ffi ^2.2.0 already required.

0.8.5

Added

• Add fuzzy port matching to re-resolve a saved port across reconnects, driver updates, or USB-port changes: LibremidiFlutter.findClosestInputPort / findClosestOutputPort, MidiObserver.findClosestPort, and MidiPort.toMatchJson / MidiPort.fromMatchJson for persisting and restoring a selection.

Fixed

• Fix a use-after-free in the MIDI input callback that could drop or corrupt incoming messages — or crash — under dense input or large SysEx. Message bytes are now copied synchronously on the native side before being delivered to Dart.

0.8.4

Added

• Add RPN and NRPN input/output support with 7-bit and 14-bit Data Entry, Data Increment/Decrement, optional output deselection, and decoded input parsing.

0.8.3

Added

• Add Windows MIDI Services (WinMIDI) support with WinUWP fallback
• Bundle the minimal WinMIDI SDK headers/metadata needed for Windows builds
• Add input receive options for SysEx, MIDI timing/clock, and active sensing
• Add MIDI output helpers and example controls for Program Change with Bank Select, Pitch Bend, Channel Aftertouch, Polyphonic Aftertouch, SysEx, and Note On/Off
• Add input and output channel selectors to the example app
• Add widget tests for the example app covering startup, fake device listing, output sending, hotplug refresh, and incoming MIDI logs

Changed

• Open ports by stable ID instead of volatile index
• Hide internal libremidi observer ports from public device lists
• Clean WinUWP MIDI port names
• Lower SDK constraints to broaden compatibility
• Lower Android minimum SDK from API 31 to API 29
• Improve example app lifecycle handling, hotplug behavior, disabled-state handling, and MIDI output labels
• Refactor the example app MIDI access layer for testability without changing runtime behavior
• Improve README quick start, input option placement, and bundled third-party license notes

Fixed

• Thread-safe port enumeration (iOS/macOS)
• Fix use-after-free on dispose during hotplug
• Fix iOS SPM build
• Validate MIDI parameters in release builds

0.8.2

• Fix SPM header search paths to stay within package root
• Fix dynamic library loading to support both CocoaPods and SPM

0.8.1

• Added Swift Package Manager (SPM) support for iOS and macOS

0.8.0

• Initial release