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ppmAudio

A PPM audio extractor and a PPM-ready ADPCM audio encoder, all-in-one


Getting and using ppmAudio

At this moment in time, releases will not be uploaded. You must build it yourself for now.

What does it do?

When you run ppmAudio with appropriate parameters and files, it can do one of two things:

  1. Extract either the bgm, se1, se2, or se3 tracks of a given PPM file to WAV
  2. Encode a WAV file as PPM-ready ADPCM to manually inject into a PPM and sign yourself (don't forget to modify offsets and lengths accordingly!)

Building it yourself

In order to build ppmAudio locally, you must have already installed a working Golang environment on your development system and installed the package dependencies that ppmAudio relies on to function properly.

ppmAudio is currently built using Golang 1.10.2.

Dependencies

Package Name
adpcm
audio
wav

Building

Simply run go build in this repo's directory once all dependencies are satisfied.

Running ppmAudio

Finally, to run ppmAudio, you will need to use a terminal/shell or a command prompt and give it some parameters to do what it needs to do. You must provide a PPM file if you wish to export a track to WAV and you must provide a WAV file if you wish to encode it to PPM-ready ADPCM.

Parameters Usage
-e Points to the WAV file to encode as PPM-ready ADPCM. Cannot be used with -d or -t, and requires an output file.
-d Points to the PPM file to encode a track of to WAV. Cannot be used with -e, and requires both a track and an output file.
-t Specifies the track to encode as WAV in conjunction with the specified PPM. Cannot be used with -e, and requires both a PPM file and an output file.
-o Points to the new file to output the resulting audio to. Required to be used with either -e and -d.

Examples:

  • ./ppmAudio -e audio.wav -o bgm.adpcm
  • ./ppmAudio -d flipnote.ppm -t bgm -o bgm.wav
  • ./ppmAudio -d flipnote.ppm -t se1 -o soundeffect1.wav
  • ./ppmAudio -d flipnote.ppm -t se2 -o soundeffect2.wav
  • ./ppmAudio -d flipnote.ppm -t se3 -o soundeffect3.wav

Contributing notes

When pushing to your repo or submitting pull requests to this repo, it is highly advised that you clean up the working directory to only contain LICENSE, main.go, README.md, and the .git folder. A proper .gitignore will be written soon to mitigate this requirement.


Support

For help and support with ppmAudio, create an issue on the issues page. If you do not have a GitHub account, send me a message on Discord (@JoshuaDoes#1685) or join the Kaeru Network Discord.

License

The source code for ppmAudio is released under the MIT License. See LICENSE for more details.

Donations

All donations are highly appreciated. They help motivate me to continue working on side projects like these, especially when it comes to something you may really want added!

Donate