https://github.com/a1k0n/jsxm

FastTracker 2 .xm module player in Javascript
https://github.com/a1k0n/jsxm

Last synced: about 2 months ago
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FastTracker 2 .xm module player in Javascript

• Host: GitHub
• URL: https://github.com/a1k0n/jsxm
• Owner: a1k0n
• License: mit
• Created: 2015-10-22T13:51:50.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2020-12-18T10:07:21.000Z (almost 4 years ago)
• Last Synced: 2024-09-26T09:23:20.825Z (3 months ago)
• Language: JavaScript
• Homepage: http://www.a1k0n.net/code/jsxm/
• Size: 145 KB
• Stars: 486
• Watchers: 23
• Forks: 36
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# xm.js

[![Build Status](https://travis-ci.org/a1k0n/jsxm.svg?branch=master)](https://travis-ci.org/a1k0n/jsxm)

FastTracker 2 .XM player, written for fun.

[Demo](http://www.a1k0n.net/code/jsxm/)

There is an XM player and a visualizer which are separate components. The

player API looks like this:

 - `XMPlayer.init` -> starts up audio context; it's available as

   `XMPlayer.audioctx`

 - `XMPlayer.load(ArrayBuffer)` -> returns `true` if loaded, otherwise

   barfs randomly

 - `XMPlayer.play()` -> starts playing

 - `XMPlayer.pause()` -> obvious

 - `XMPlayer.stop()` -> obvious; call this before loading a new one

Loading trackview.js is optional; without it, the player won't do any

visualizations. Or, you can override the following to get callbacks:

 - `XMView.pushEvent(e)` -> push an audio event onto the queue. Called

   once per tick (about 50Hz, controlled by song). `e` contains fields:

   - `t` - audio timestamp

   - `vu` - Float32Array of RMS power (volume) for each channel

   - `scopes` - [Float32Array] of oscilloscope data, one array per

     channel; `XMView.scope_width` contains # of samples to produce here

   - `songpos` - position in the song (# patterns played)

   - `pat` - pattern number currently playing

   - `row` - row within pattern

 - `XMView.pause()` - pause visualization

 - `XMView.stop()` - stop/reset visualization

The code which defines what the buttons do and downloads songs and so

forth is in `shell.js`.

The player is fairly feature-complete, but is missing a bunch of effects.

MIT license.