Alternative NSF engine

[tails_]

current NotSoFatso engine lacks VRC7 support and noise channel to loud soo
http://offgao.no-ip.org/program/nezplug++.html seems to be pretty accurate
it written it C++ but replayers are in C so maybe somebody will port it? 
also it supports GBS,KSS,AY,HES and some others

[saratoga]

Thats actually in c, no c++, but I don't think its GPL so you probably can't use it with rockbox.

[tails_]

found original engine on sourceforge http://sourceforge.net/projects/nezplug/
does that means that it's relased under GPL?

[Llorean]

"License:  zlib/libpng License"

That doesn't say GPL. On the plus side, I believe it is GPL compatible.

[tails_]

http://www.zlib.net/zlib_license.html
http://www.libpng.org/pub/png/src/libpng-LICENSE.txt

dunno, looks fine

[saratoga]

"License:  zlib/libpng License"

That doesn't say GPL. On the plus side, I believe it is GPL compatible.

The files I looked at said "License: PDS".  No idea what that means.

[Llorean]

Ah yeah, that's pretty problematical. Licensing must be explicit.

[tails_]

Sent mail to offgao
I bet he won't answer in moonspeak. 

//added
Great found it's page http://www.pdslicense.com/ but anything in japanese

[tails_]

okay here goes answer:
http://offgao.no-ip.org/bbs/test/read.cgi/offgao/1124214003/l50

Google translate:
I checked, PDS (Public domain software), the software that was available on the waiver of a copyright
PDS License, then I'd like can be freely distributed with the modified source code.

http://Wikipedia: http://en.wikipedia.org/wiki/Public_domain_software

[LambdaCalculus]

If it is indeed and truly public domain, then perhaps you can start studying it a bit more and snipping out the bits that you want.

For the record, there's already a GBS codec in Flyspray (FS#7331), but it needs a major reworking in order to be fully functional. With this codec, GBS tracks play, but they sound pretty awful.

Also, as I've noticed that you've mentioned in your first post that this engine also supports HES tracks (Hudson Entertainment System Sound Format; TG-16/PCE chiptunes), you may want to have a gander at this page: http://namida.com/kaminarimon/hes/archive_players.htm

[tails_]

okay. I'll start from learning C