flutter_midi_command_web #

Web implementation of flutter_midi_command backed by the browser Web MIDI API.

What it supports #

• Enumerating MIDI input/output ports as MidiDevice
• Connecting/disconnecting to discovered devices
• Receiving MIDI packets from input ports
• Sending MIDI packets to output ports
• Emitting setup-change events when browser MIDI ports appear/disappear

What it does not support #

• Virtual MIDI devices (addVirtualDevice / removeVirtualDevice)
• iOS/macOS network session APIs (isNetworkSessionEnabled / setNetworkSessionEnabled)
• BLE via flutter_midi_command_ble on web

Browser requirements #

• HTTPS origin (or localhost during development)
• Browser with Web MIDI API support (typically Chrome/Edge)
• User permission granted for MIDI access

If the browser does not expose navigator.requestMIDIAccess, API calls will throw UnsupportedError.

Notes on permissions and SysEx #

The implementation requests MIDI access with SysEx enabled (sysex: true). If SysEx permission is denied by the browser/user policy, initialization may fail and surface as an error from devices/connectToDevice.

Testing #

This package includes backend-injected unit tests in test/flutter_midi_command_web_test.dart. Run in a browser with:

flutter test --platform chrome