ptplayer.js

ptplayer.js - possibly the slowest Protracker module player in the world. Feed it a module file and give it a try!

Module name:
Position:
Mono

ptplayer.js is a JavaScript Protracker module player. It was written as a JavaScript programming exercise, and aims at maximum ProTracker compatibility over performance, sound quality, ease of use or clean source code.

The player implements all Protracker commands apart from E0 (filter toggle), and aims at full compatibility with Protracker 2.3d, including bugs. Bug reports are very welcome, but please check any player behavior against Protracker 2.3d running on either UAE or real Amiga hardware. Known limitations:

• No filters
• All audio changes done within a single call to the player take effect immediately and simultaneously. If there are examples of ProTracker modules that actually depend on the delays between register value changes let me know.
• Enabling the DMACON bit for a channel latches period/start/length/position values to internal Paula registers immediately. Again this should not matter for ProTracker playback but counterexamples are welcome.
• Hardcoded to PAL clocks; or is this a feature?

The player has been tested against FireFox on OSX and Windows, Chrome on Windows and Safari on OSX. Other browsers that implement either the Mozilla audio streaming API, the Webkit Audio API or the new standard Web Audio API may also work. Browser compatibility fixes would be very welcome!

Comments, feedback, and random pieces of hate mail: pekangas at s2 dot org.

Copyright 2012, 2013 Petteri Kangaslampi.

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 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.