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Description:

midiexplorer 0.0.1a5

MIDI Explorer

Yet another MIDI monitor, analyzer, debugger and manipulation tool.

The intent is to be specifications compliant to help debugging,
reverse-engineering and developing products based on the MIDI protocol while learning everything there is to know in the
process.
The reference specifications used are linked below and comes from the following standards bodies:

MIDI Association, ex MIDI Manufacturers Association (MMA) USA
Association of Musical Electronics Industry (AMEI) Japan
MIDI Standards Committee (MSC) Japan

There is two specification supplement types:

Recommended Practices (RP) 001-054
Confirmation of Approval for MIDI Standard (CA) 018-035

A nice history list is provided by the MSC [JP].
I have made a translated and slightly updated
Google Sheet
for easier browsing.
Language is currently Python to help with rapid prototyping and fast iteration. It may change at any time as I see fit.
Table of Contents

Status
Installation
Features & TODO

Documentation
Quality
MIDI protocols
Platform support
Interactive GUI
MIDI implementation charts

Prior art
Legal notice

License
Dependencies & License Acknowledgment
Trademarks

Status
Basic features implemented.
First alpha released!
Testers welcome ;)
Installation (Python)
Install Python 3.10
From python.org (recommended) or your favorite package manager.
Install PipX
Follow the instructions for your operating system.
Microsoft Windows
In a terminal
py -m pip install --user pipx
py -m pipx ensurepath

Close and reopen your terminal.
Mac OS X / Linux
python3 -m pip install --user pipx

Install MIDI Explorer
pipx install midiexplorer

Installation (Native)
Nuitka (alpha)
You may also build a compiled, single-file executable from a properly configured venv using:
python -m nuitka --follow-imports --include-package=rtmidi --include-package=mido --include-package=dearpygui --include-package=dearpygui_ext --include-package=midiexplorer --include-package-data=midiexplorer --onefile --disable-console --windows-icon-from-ico=src\midiexplorer\icons\midiexplorer.ico src/midiexplorer

Features & TODO
Documentation

Developers

Comments
Docstrings (PEP257)
Type Hinting (PEP484)

Users

Sphinx

autodoc
Read The Docs

Quality

Linting

Code style checks? (PEP8 pycodestyle)
Docstrings? (darglint)
Typechecking? (mypy)

Unit tests? (pytest)

Coverage

Packaging

PyPi

Using Hatch

Get version for Git
using hatch-vcs

PyInstaller
WIP Nuitka

Microsoft Windows
Apple Mac OS X
GNU/Linux

PyOxidiser?
Installers

Microsoft Windows

NSIS?
WiX?

Apple Mac OS X
GNU/Linux

AppImage?

Continuous Integration? (GitHub Actions workflow)

MIDI protocols

(WIP) v1.0
includes RP-001/RP-002/RP-003/RP-004/RP-005/RP-006/RP-007/RP-008/RP-009/RP-010/RP-011/RP-012/RP-013/RP-014
(1983 - February 1996)
Using a modified mido
v2.0
(Planned long term: after v1.0 and all its extensions are fully stable)

Platform support

Microsoft Windows

WinMM aka Windows Multimedia MME API
via mido's RtMidi backend
WinRt aka UWP Windows Runtime API
RtMidi related issue

Apple Mac OS X

Core MIDI
via mido's RtMidi backend
JACK MIDI
(Should work but untested ATM)

GNU/Linux

ALSA

Sequencer API
via mido's RtMidi backend
RawMidi API

JACK MIDI
(Should work but untested ATM)
OSS?
(Legacy API)

Interactive GUI

Icons
Fonts
Custom theme
About window
Connections window (Node editor based)

Inputs
Outputs
Modules

History window (Table)
Monitor data window (Decoding with live feedback)
Generator data window
(WIP) Standard MIDI file window
Log window

Insert comment
Save to file

Overwrite
Append

Actions (Menus and/or keyboard shortcuts)

Toggle connections (F1)
Toggle history (F2)
Toggle monitor (F3)
Toggle generator (F4)
Toggle standard MIDI file (F5)
Toggle full-screen (F11)
Toggle log (F12)
Save & restore windows state
(Buggy at the moment)

I/O management

List MIDI I/O

USB MIDI 1.0

OS Level
Direct Access?

USB MIDI 2.0

OS Level?
Direct Access?

IEEE-1394
RP-027 (MMA)
MIDI Media Adaptation Layer for IEEE-1394 v1.0
RP-027 (AMEI/MSC)
MIDI Media Adaptation Layer for IEEE-1394 v1.0

OS Level?
(Probably works but no hardware to test with)
Direct Access?

Bluetooth Low Energy (BLE-MIDI)
RP-052 (MMA)
Specification for MIDI over Bluetooth Low Energy (BLE-MIDI) v1.0
RP-052 (AMEI/MSC)
Specification for MIDI over Bluetooth Low Energy (BLE-MIDI) v1.0

OS Level
Requires WinRt MIDI for
Microsoft Windows
Direct Access?

RTP-MIDI
RTP Payload Format for MIDI (MMA)
IETF RFC 6295
RTP Payload Format for MIDI

(Partial) OS Level
Requires rtpMIDI for Microsoft Windows
(Works with Microsoft Windows. Untested on other OS)
Direct Access?

Virtual

OS Level
Requires loopMIDI for Microsoft Windows
Native
Provided by RtMidi for Linux & Apple Mac OS X

Custom Hardware
(Planned in the near future. Prototyping in progress.)

5-Pin DIN
CA-033 (MMA)
MIDI 1.0 Electrical Specification Update [2014]
CA-033 (AMEI/MSC)
MIDI 1.0 Electrical Specification Update [2014]
2.5mm TRS Jack
RP-054 (MMA)
Specification for use of TRS Connectors with MIDI Devices
RP-054 (AMEI/MSC)
Specification for use of TRS Connectors with MIDI Devices
Mobile Musical Interface
RP-048/amd1 (MMA)
Mobile Musical Interface Specification v1.0.6
RP-048/Amd1 (AMEI/MSC)
Mobile Musical Instrument Specification v1.1 / Mobile Musical Interface Specification v1.0.6
RP-048 (AMEI/MSC)
Mobile Musical Interface Specification v1.0.2

Select mido backend?
(Only RtMidi suits our needs)
Input reading modes

Polling
Callback

Sort by ID/Name
(Forced name sorting is enough for now)
Connections

Port to probe
Probe to port
Port to port
Port to any module
Any module to port
Module to module

Refresh

Manual
Auto with reconnect

Virtual ports

Add/Remove

Save/restore connections status
Timing

System
(Computed using the highest resolution local clock available)
Hardware
(Retrieved using a modified mido RtMidi backend)

History view (Table decode)

Input
Output
Selection decodes to monitor
Selection prepares generator
Color code?

Per source
Per channel
Per message type

Modules

Plugins based architecture?

Using pluggy?

Instances management?
(Add/Remove, multiple instances of a module…)
Virtual Debug Probe

Read raw input
Thru support

Activity monitor

Settings

Colors

Live
Selected

Persistence
Note-On with velocity set to 0 is Note-Off (Per specification)
Display EOX as either a System Common or a System Exclusive message
Notation

English Alphabetical
Syllabic
German Alphabetical

Stateless

Message type

Channel
System

Channel
Controllers

Redefinition of CC91 and CC93
RP-023 (MMA)
Renaming of CC91 and CC93
RP-023 (AMEI/MSC)
Redefinition of CC91 and CC93

Stateful

Notes

Keyboard

Velocity

Staff

Controllers

Value
Data Increment / Decrement
RP-018 (MMA)
Response to Data Inc/Dec Controllers
RP-018 (AMEI/MSC)
Response to Data Increment/Decrement Controller
Sound Controller Defaults
RP-021 (MMA)
Sound Controller Defaults (Revised)
RP-021 (AMEI/MSC)
Defaults for Sound Controllers
(Partial decoding) High Resolution Velocity Prefix
CA-031 (MMA)
CC #88 High Resolution Velocity Prefix
CA-031 (AMEI/MSC)
CC#88 High Resolution Velocity Prefix
Registered Parameter Numbers (RPN)

(Partial decoding) 00 Pitch Bend Sensitivity
(Partial decoding) 01 Fine Tuning
(Partial decoding) 02 Coarse Tuning

Redefinition of RPN 01/02
RP-022 (MMA)
Redefinition of RPN 01/02
RP-022 (AMEI/MSC)
Channel Fine/Coarse Tuning

(Partial decoding) 03 Tuning Program Select
(Partial decoding) 04 Tuning Bank Select
(Partial decoding) 05 GM2 Modulation Depth Range
CA-026 (MMA)
Modulation Depth Range RPN
CA-026 (AMEI/MSC)
Modulation Depth Range RPN
06 MIDI Polyphonic Expression v1.1 (MPE)
RP-053/CA-034/M1-100-UM
MIDI Polyphonic Expression v1.1
CA-034 (AMEI/MSC)
MPE Configuration RPN
…
61 (0x3D) Three Dimensional Sound Controller
RP-049 (MMA)
Three Dimensional Sound Controllers
RP-049 (AMEI/MSC)
Three Dimensional Sound Controllers

Non Registered Parameter Numbers (NRPN)

Program Changes, Bank Select & Patches

General MIDI System (MMA)
(GM)

Level 1 (GM1/GM-1) (1991)
MMA0007/RP-003
General MIDI System Level 1
RP-015 (AMEI/MSC)
Response to Reset All Controllers
Level 2 (GM2/GM-2) (1999)
RP-024/RP-036/RP-037/RP-045 (MMA)
General MIDI 2 v1.2a
RP-024 (AMEI/MSC)
General MIDI Level 2 Recommended Practice
RP-024 General MIDI 2 (AMEI/MSC)
v1.2a
RP-036 (AMEI/MSC)
Default Pan Curve
RP-037 (AMEI/MSC)
GM2 MIDI Tuning Amendment
Lite (GML) (2001)
RP-033 (MMA)
General MIDI Lite v1.0
RP-033 (AMEI/MSC)
General MIDI Lite v1.0

Proprietary

Roland

Linear Arithmetic (LA) (MT-32…) (1987)
General Standard (GS) (Sound Canvas…) (1991)

Yamaha

EXtended General MIDI (XG)

Level 1 (1994)
Level 2 (1997)
Level 3 (1998)
Lite (2002)

System Exclusive (SysEx)

Basic decoding

Manufacturer ID
Device ID
Raw payload

(WIP) Universal System Exclusive
(Realtime & Non-Realtime)

Sub-IDs 1 & 2 type decoding
Payloads decoding

MIDI Show Control (MSC)
RP-002/RP-014 (MMA)
MIDI Show Control 1.1.1
MIDI Time Code (MTC)
MMA0001/RP-004/RP-008 (MMA)
MIDI Time Code v4.2.1
Notation information
RP-005/RP-006
File dump
RP-009
MIDI tuning
RP-012
MIDI Machine Control (MMC)
MMA-0016/RP-013 (MMA)
MIDI Machine Control 1.0
File Reference System Exclusive Message
CA-018 (MMA)
File Reference System Exclusive Message
CA-018 (AMEI/MSC)
File Reference System Exclusive Message
Sample Dump Size, Rate and Name Extensions
CA-019 (MMA)
Sample Dump Size, Rate and Name Extensions
CA-019 (AMEI/MSC)
Sample Dump Size, Rate and Name Extensions
GM2 Midi Tuning Messages
CA-020/CA-021/RP-020 (MMA)
MIDI Tuning Messages
CA-020 (AMEI/MSC)
MIDI Tuning Bank and Dump Extensions
CA-021 (AMEI/MSC)
Scale/Octave Tuning
CA-021/Amd1 (AMEI/MSC)
Amendment to Scale/Octave Tuning
RP-020 (AMEI/MSC)
GM2 Controller Destination Setting
CA-022 (MMA)
Controller Destination Setting
CA-022 (AMEI/MSC)
Controller Destination Setting
GM2 Key-Based Instrument Controllers
CA-023 (MMA)
Key-Based Instrument Controllers
CA-023 (AMEI/MSC)
Key-Based Instrument Controllers
GM2 Global Parameter Control
CA-024 (MMA)
Global Parameter Control
CA-024 (AMEI/MSC)
Global Parameter Control
GM2 Master Fine & Coarse Tuning
CA-025 (MMA)
Master Fine/Coarse Tuning
[CA-025 (AMEI/MSC)]
https://amei.or.jp/midistandardcommittee/Recommended_Practice/e/ca25.pdf)
Master Fine/Coarse Tuning
GM2 System Level 2 Message
CA-027 (AMEI/MSC)
General MIDI Level 2 Universal System Exclusive Message
Extension 00-01 to File Reference SysEx Message
CA-028 (AMEI/MSC)
Extension 00-01 to File Reference Sysex Message
GM-Lite Scalable Polyphony MIDI Specification (SP-MIDI)
[RP-034/RP-035 (MMA)](ç
https://www.midi.org/specifications/file-format-specifications/mobile-midi/scalable-polyphony-midi-sp-midi-2)
Scalable Polyphony MIDI Specification and Device Profiles v1.0b
RP-034/RP-035 (AMEI/MSC)
Scalable Polyphony MIDI Specification and Device Profiles v1.0a
GM-Lite Maximum Instantaneous Polyphony (MIP)
CA-029 (AMEI/MSC)
Maximum Instantaneous Polyphony (MIP)
Mobile Phone Control Message
RP-046 (MMA)
Mobile Phone Control Message
CA-030 (MMA)
Mobile Phone Control Universal Real Time System Exclusive Message
MIDI Visual Control (MVC)
CA-032/RP-050 (MMA)
MIDI Visual Control Specification v1.0
CA-032 (AMEI/MSC)
MIDI Visual Control Universal Non Realtime System Exclusive Message
RP-050 (AMEI/MSC)
MIDI Visual Control Specification v1.0
MIDI Capability Inquiry (MIDI-CI)
CA-035 (AMEI/MSC)
MIDI Capability Inquiry (MIDI-CI) Specification
CA-035 Spec (AMEI/MSC)
MIDI Capability Inquiry (MIDI-CI) v1.0

Generator

Decode raw hex string
Generate raw output
Buffer/Clipboard any message (raw or decoded) to output

File formats

WIP Standard MIDI File (SMF)
RP-001 (MMA)
Standard MIDI Files 1.0

WIP Analyzer
Player
Recorder
Extensions

Lyrics Events Definition
RP-017 (MMA)
SMF Lyric Meta Event Definition
RP-017 (AMEI/MSC)
SMF Lyric Meta Event Definition
RP-026 (AMEI/MSC)
SMF Lyric Meta Event
RP-026 SMF with Lyrics Application Guide (AMEI/MSC)
RP-026 SMF with Lyrics Data Creation Guideline
Device & Program Name
RP-019 (MMA)
SMF Device Name and Program Name Meta Events
RP-019 (AMEI/MSC)
SMF Device Name and Program Name Meta Event
International Standard MIDI Code (ISMC)
RP-051 (AMEI/MSC)
International Standard MIDI Code

Downloadable Sounds (DLS)

Level 1 (DLS1/DLS-1)
RP-016/MMA-0017 (MMA)
Downloadable Sounds Level 1 v1.1b
RP-016 (AMEI/MSC)
Downloadable Sounds Level 1 v1.1a
MMA-0017 (AMEI/MSC)
Downloadable Sounds Level 1 v1.1b
Level 2 (DLS2/DLS-2)
RP-025/Amd2 (MMA)
Downloadable Sounds Level 2.2 v1.0
RP-025 (AMEI/MSC)
Downloadable Sounds Level 2 v1.0
RP-025/Amd1 (AMEI/MSC)
Downloadable Sounds Level 2.1 v1.0
RP-025/Amd2 (AMEI/MSC)
Downloadable Sounds Level 2.2 v1.0
GM-Lite Mobile DLS Specification
RP-041 (MMA)
Mobile DLS (Downloadable Sounds Format for Mobile Applications) v1.0a
RP-041 (AMEI/MSC) Password: amei2005
Mobile DLS (Downloadable Sounds Format for Mobile Applications) v1.0a

RMID
RP-029 (AMEI/MSC)
Bundling SMF and DLS data in an "RMID" File
eXtensible Music Format (XMF)
RP-030/RP-031/RP-032/RP-039/RP-040/RP-042/RP-043/RP-045/RP-047 (MMA)
XMF Specification Incorporating all Recommended Practices v1.2
RP-030 (AMEI/MSC)
Specification for XMF Meta File Format v1.00a
RP-031 (AMEI/MSC)
Type 0 and Type 1 XMF Files (SMF + DLS)
RP-032 (AMEI/MSC)
SMF Meta Event for XMF Patch Type Prefix
RP-039 (AMEI/MSC)
XMF Meta File Format Updates 1.01
RP-040 (AMEI/MSC)
XMF Compression Definition for ZLIB
RP-042 (AMEI/MSC)
Mobile XMF Content Format Specification
RP-043 (AMEI/MSC)
XMF Meta File Format 2.00
RP-045 (AMEI/MSC)
Audio Clips for Mobile XMF
RP-047 (AMEI/MSC)
ID3 Metadata for XMF Files
Support karaoke formats?

.KAR Tune 1000 Corp. [CA] MIDI Karaoke file type 1 (Soft Karaoke)
.MID+.TXK KaraDOS
.CRT Tune 1000 Corp Soft Concert
.ST3 Creative Labs [KR] Star 3 / Real Orche

Support proprietary formats?

Alesis

DataDisk (v1.x)
DataDisk SQ (v2.x)

Ensoniq

ASR series
EPS series
SQ-80 (.efs)
TS series
VFX-SD, SD-1

Kawai

Q-80

Korg

01/W series
T series

PianoDisc

PianoDisc Sequence

Roland

MC-50, MC-500

Yamaha

E-SEQ (Clavinova, Disklavier, DOM-30, DRC-20)
XF

Converter

SMF between types
From/to other formats?

Splitter
Merger
Translator/Filter
Protocol analyzers/decoders

HUI
LCU
MCU
Others?

Trigger/Response (Protocol emulator)

HUI
LCU
MCU
Others?

Performance analyzer

Round trip latency
Jitter
Bandwidth
Correctness
Stresser/Fuzzer

Hardware toolbox

MIDI implementation charts

reStrucuredText (reST) Templates

v1.0 (MIDI 1.0)
v2.0
RP-028 (MMA)
MIDI IMPLEMENTATION CHART V2 INSTRUCTIONS
RP-028 (AMEI/MSC)
Version 2 MIDI Implementation Chart
RP-028 MIDI IMPLEMENTATION CHART V2 INSTRUCTIONS (AMEI/MSC)

Generator from logged traffic?

Prior art

MIDI-OX (Win)
Snoize MIDI Monitor (Mac)
Midi View (Win/Mac)
OBD Software Midi Monitor 2002 (Win)
Morson PocketMIDI (Win/Mac/iOS)
Drumstick MIDI Monitor aka KMidiMon (Linux)

Legal notice
License

Author: ©2021-2023 Raphaël Doursenaud.
This software is released under the terms of the GNU General Public License, version 3.0 or later (GPL-3.0-or-later).
See LICENSE.
Logo and icons released under the
Creative Commons Attribution-Share Alike 4.0 International.
Dependencies & License Acknowledgment

Python v3.10
Copyright © 2001-2022 Python Software Foundation.
Used under the terms of the PSF License Agreement.
RtMidi
Copyright (c) 2003-2021 Gary P. Scavone.
Used under the terms of the MIT license.
via python-rtmidi
Copyright (c) 2012 - 2021 Christopher Arndt.
Used under the terms of the MIT license.
via mido
Copyright (c) 2013-infinity Ole Martin Bjørndalen.
Used under the terms of the MIT license.
Dear ImGui
Copyright (c) 2014-2022 Omar Cornut.
Used under the terms of the MIT license.
via Dear PyGui
Copyright (c) 2021 Dear PyGui, LLC.
Used under the terms of the MIT license.

Fonts

Roboto
Copyright (c) 2015 The Roboto Project Authors.
Used under the terms of the Apache License, Version 2.0.
Roboto Mono
Copyright (c) 2015 The Roboto Mono Project Authors.
Used under the terms of the Apache License, Version 2.0.

Logo and icons
Composite work based upon:

MIDI connector
Copyright Fred the Oyster
Used under the terms of the
Creative Commons Attribution-Share Alike 4.0 International license.
Steering Wheel
Copyright Spider
Used under the terms of the
Creative Commons Attribution 4.0 International license.

Trademarks
MIDI is a trademark of the MIDI Manufacturers Association (MMA) in the United States of America.
This is not a registered trademark in the European Union and France where I reside.
Other
Other trademarks are property of their respective owners and used fairly for descriptive and nominative purposes only.