Chiptune3 NPM | npm.io

Chiptune.js

Version 3

Modernized ES6 module version with libopenmpt AudioWorklet backend

See: https://DrSnuggles.github.io/chiptune

Modland demo player: https://DrSnuggles.github.io/chiptune/demo.html

Drop in your favorite songs.

Build

Docker was used to build the library

Exported_Functions: '_malloc','_free','stackAlloc','stackSave','stackRestore','UTF8ToString'

CD into docker and run build.bat (Win) or build.sh (Linux)

Afterwards you can minify by "npm run minify"

History

2024-03-13: Bumped to 0.7.4
2024-02-04: Metadata contains song, bugfixes and minify
2024-01-24: Added config object, Modland player
2024-01-23: Drag'n'Drop files. Build library using Docker.
2024-01-22: Libopenmpt 0.7.3 compiled with Emscripten 3.1.51

Version 2

This is a javascript library that can play module music files. It is based on the libopenmpt C/C++ library. To translate libopenmpt into Javascript emscripten was used. For audio output inside the browser WebAudio API is used.

Please note: The compiled libopenmpt.js in this repository is based on an outdated version of libopenmpt. Newer versions contain bugfixes and other improvements. Download the latest version from the libopenmpt developers here and replace libopenmpt.js.mem and libopenmpt.js.
If you prefer to compile libopenmpt.js yourself (to save space or make custom changes) follow the instructions in the "Development" section.

Features

Play all tracker formats supported by libopenmpt (including mod, xm, s3m, it)
Simple Javascript API
Pause/Resume
Tested with Google Chrome and Firefox
Play local (HTML5) and remote files (XHR)
Stereo playback
Module metadata
Looping mode

To do

Playback information (e.g. position, speed, bpm)
Mixer settings (e.g. sampling rate, resolution)
Seekbar support

Demo

See it in action here.

Just drop a module (e.g. from modarchive.org) on the demo page and enjoy.

Development

Download the latest emscripten SDK. Follow the instructions for your OS. Make sure emcc and em++ commands are available in the PATH.
Next download and extract the libopenmpt source code (unix like) from https://lib.openmpt.org/libopenmpt/.
Use this command inside the libopenmpt source folder to build:

make CONFIG=emscripten

If it compiles successfully these files (and a few more) will be created in the bin directory:

libopenmpt.js is libopenmpt compiled to JavaScript.
libopenmpt.js.mem is the memory initialization file libopenmpt.js will download/require it when loaded.
libopenmpt_test.js (and libopenmpt_test.j.mem) is the libopenmpt test suite and can be run in NodeJS.

Only the first two files are needed for chiptune2.js.

Building Stylesheet

The stylesheet is built with SASS+Compass. To build this yourself, follow the Compass installation instructions, then change into the chiptune2.js directory and use this command:

compass watch

The stylesheet .css file with rebuild every time you make a change to the source file in the sass folder.

Contributers (in order of appearance)

Thanks to everyone!

License

All code in this project is MIT (X11) licensed. The only exception are the compiled libopenmpt parts which remain under the OpenMPT project BSD license.

License text below:

Copyright © 2013-2024 The chiptune2.js contributers.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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