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Forums > C64 Coding > PAL emulation library or command line tool
2015-04-02 13:41
Perplex

Registered: Feb 2009
Posts: 254
PAL emulation library or command line tool

I'm working on a tool where I am generating C64 images in PNG format (320x200, 16 colors) for use on the web. To make the images look better, I'd like to apply a PAL emulation filter on them, maybe also scale them to double size in the process.

Does a library or command line tool (preferable written in C, but at least portable) exist for this kind of thing, or do I have to roll my own? I guess I could take a look at the VICE code, but it would save me some time if there was something ready to use already.
2015-04-02 15:28
algorithm

Registered: May 2002
Posts: 702
Groepaz has created something of this nature iirc. But not released
2015-04-02 15:37
Grue

Registered: Dec 2001
Posts: 148
something like this?

http://sourceforge.net/projects/view64/
2015-04-02 16:35
Knut Clausen

Registered: Apr 2013
Posts: 18
@Perplex, not sure if you've seen this, but I guess It contains necessary info if you decide to roll your own stuff:
http://hitmen.c02.at/temp/palstuff/
Seems like Groepaz has some code that might be doing what you need, as Algorithm said, though.
2015-04-02 17:32
chatGPZ

Registered: Dec 2001
Posts: 11140
i do have some reference code indeed - however it is slow and ugly and not really suited neither for release nor use in a real program. i hacked up some commandline tool for veto some time ago, no idea if he even ever used that =P... whatever, leave me a mail and we can work something out :) i wouldnt mind releasing the whole thing (with source) at all, just not in this terrible state =)
2015-04-02 18:22
Perplex

Registered: Feb 2009
Posts: 254
Quote: something like this?

http://sourceforge.net/projects/view64/


view64 seems to be exactly what I need, provided I convert my source images to koala format first, and I already have code for that in my toolbox. Thanks!

Groepaz: It would be great to get preview images exactly like they would look in the emulator. I wouldn't mind helping out when I get some spare time.
2015-04-02 18:27
chatGPZ

Registered: Dec 2001
Posts: 11140
check http://hitmen.c02.at/temp/palstuff/ at the bottom, and the links at the top of the page
2015-04-02 18:40
algorithm

Registered: May 2002
Posts: 702
Groepaz. If it does the job that's all that matters regardless of how messy the code may be
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