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

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Features

• Parse .tja chart files.
• Convert parsed TJA song data into fumen chart data.
• Write fumen chart data to .bin files.
• Decode official fumen .bin files.

Usage

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.

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/).

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, 5, 6, 7, 8, 9	✅	✅
A, B	✅	❌
C, D, E, F, G, H, I	⚠️	❌	Replaced by normal notes/rolls in tja2fumen.
9000, 9008,	⚪️	⚠️	Double Kusudama note treated as 1 drumroll by tja2fumen, but 2 overlapping drumrolls by tja2bin.
#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 #52, #27
#LEVELHOLD	⚠️	❌	See #52
#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. :)