tja2fumen is a tool that allows you to convert TJA charts (.tja) to fumen charts (.bin).

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Features

tja2fumen is designed to be an open source alternative to the closed source tja2bin tool that has been floating around various Discord servers. tja2fumen fixes several outstanding tja2bin issues, while providing an open source codebase to modify and learn from.

• Converts .tja chart files to official fumen .bin files.
• Decodes official fumen .bin files (to inspect metadata and note data).
• Uses strong development practices (thorough test suite with example charts, type checking)
• Provides an open source resource for the Taiko no Tatsujin fumen file format.

Usage

Note

For older versions of TakoTako (3.2.0 and below), you can add tja2fumen by renaming tja2fumen.exe to tja2bin.exe and placing it inside TakoTako's plugin folder (BepInEx/plugins/com.fluto.takotako/).

tja2fumen is included as part of several existing projects. So, you may be using tja2fumen already!

• XB1/TDMX: TakoTako converts both chart and audio files for XB1/TDMX.
• Nijiro: TaikoSoundEditor converts both chart and audio files for NIjiro.

You can also use tja2fumen directly on a .tja file by downloading tja2fumen.exe from the Releases page and running tja2fumen.exe file.tja in a command prompt.

TJA Support

If there is an unsupported feature that you would like support for, please make a request by opening a new issue.

Supported file formats

Legend: ✅ = Fully supported, ❌ = Not supported

	tja 2 fumen	tja 2 bin	Comment
UTF-8 (with BOM)	✅	❌
UTF-8 (without BOM)	✅️	✅
Shift-JIS	✅	✅

Supported metadata

Legend: ✅ = Fully supported, ⚪️ = Ignored, ⚠️ = Incorrect behavior, ❌ = Not supported

	tja 2 fumen	tja 2 bin	Comment
BPM:, OFFSET:	✅	✅
TITLE:, SUBTITLE:, WAVE:, DEMOSTART:, etc.	⚪️	⚪️	The only global metadata needed are BPM: and OFFSET:.
COURSE:, LEVEL:, BALLOON:, SCOREINIT:, SCOREDIFF:	✅	✅
STYLE: (Single, Double)	✅	❌
EXAM1:, GAUGEINCR:, TOTAL:, etc.	⚪️	⚪️	Other simulator-specific metadata fields are currently ignored.

Supported notes/commands

Legend: ✅ = Fully supported, ⚪️ = Ignored, ⚠️ = Incorrect behavior, ❌ = Not supported

	tja 2 fumen	tja 2 bin	Comment
0, 1, 2, 3, 4	✅	✅
5008,, 6008,, 7008,	✅	✅
9008,	✅	⚠️
9000, 9008,	⚪️	⚠️	Double Kusudama note treated as 1 drumroll by tja2fumen, but 2 overlapping drumrolls by tja2bin.
A, B	✅	❌	Multiplayer "hands" notes are valid in fumens, but unrecognized by tja2bin.
C, D, E, F, G, H, I	⚠️	❌	Replaced by normal notes/rolls in tja2fumen.
#START, #END	✅	✅
#START P1, #START P2	✅	❌
#BPMCHANGE	✅	⚠️	See #16
#MEASURE	✅	✅
#SCROLL	✅	✅
#GOGOSTART, #GOGOEND	✅	✅
#BARLINEOFF, #BARLINEON	✅	✅
#DELAY	✅	❌	See #27
#BRANCHSTART, #BRANCHEND	✅	✅
#N, #E, #M	✅	✅
#SECTION	⚠️	❌	See #53, #27
#LEVELHOLD	✅	❌
#BMSCROLL, #LYRIC, #DIRECTION, etc.	⚪️	❌	Other simulator-specific chart commands are currently ignored.

Reporting bugs

If you've found a .tja file that tja2fumen converts incorrectly, please open a new issue on the tja2fumen repo.

It is especially important that you attach the song files to the issue. You can do this by adding the song files to a .zip (Select files -> Right click -> "Send to" -> "Compressed (zipped) folder"), and then uploading the .zip to the issue. This greatly helps me to reproduce and fix any issues.

You can also message me directly on Discord (_vivaria) if you don't have a GitHub account, and I will take care of making an issue for you. :)

Building on top of tja2fumen

If you are a developer looking to add tja2fumen to your project, you have two options:

1. For non-Python projects, you can download tja2fumen.exe and call it via a system call.
2. For Python projects, you can install tja2fumen via pip install tja2fumen.

tja2fumen uses a very permissable license (MIT License). You are free to distribute and modify tja2fumen, but please include a copy of the MIT License alongside the tja2fumen.exe executable if you copy it into your project.

Attribution

• The fumen-parsing code in this project is based off of a modified copy of the readFumen() function from the fumen2osu.py found in @KatieFrogs' fumen-tools project.
• The TJA-parsing code in this project is a Python translation of the parseTJA.js file from @WHMHammer's tja-tools.
• sakurada0291, DDDDDD, U-ros, and others in the Discord for helping to test tja2fumen. :)