CLR MIDI Monitor 1.0.2

CLR MIDI Monitor 1.0.2

First public release of the native Apple Silicon macOS application.

Includes source/destination selection with All checkboxes; automatic preparation of the bundled output observer before CoreMIDI starts; direct virtual MIDI reception; a compact latest-event row and shared history; format/category filters; Inspect with raw UMP; JSON export in the File menu; a collapsible Options sidebar; a red OFF overlay; and an offline manual in the Help menu.

Version 1.0.2 also makes the CLR logo a link to the Custom Live Rigs website. Right-click the logo to copy the address; if the browser cannot be opened, the app copies the address and explains what happened.

Multiple windows remain available and share one capture session. Export includes all retained events, regardless of display filters.

Distribution notes

This build is ad-hoc signed, not Apple Developer ID signed or notarized. macOS may block downloaded copies. Source and local build instructions are provided. The output observer is optional for inputs/direct reception, is bundled with the app, prepares itself automatically and never forces a MIDI-server restart.

Known limits

MIDI 2.0 semantic decoding, SysEx reassembly, capture import/session reopening and Intel binaries are not included. Sender-app names are not supplied by CoreMIDI output observation; OUT rows name destinations. Retained history is limited to 10,000 events. Monitoring has finite capacity and CPU overhead.

License

Source-available under PolyForm Noncommercial 1.0.0. Commercial-use permission is not granted. Public visibility does not grant write access to the original repository.

Validation

21 unit tests pass, plus isolated driver overload/memory-safety and Swift IPC tests. CoreMIDI output to Kenton has been reported working by the owner. The release-session controlled live probe did not send anything because another monitor owned the driver subscription; broad live/stage qualification and CPU benchmarks remain outstanding.

Only one app process runs per user, including copies launched from other folders. A second launch activates the existing app. File → New Window still opens another view of the shared capture.