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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Aug 27, 2011 5:55 am  (#121) 
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Posts: 78
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"gimp-2.7/settings/plug-ins" on my compiled version


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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Aug 27, 2011 5:57 am  (#122) 
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Posts: 14182
thank you, I will try it.
edit-1: I tried it and still no save as animation in dialog. I did reboot gimp first.
Image

edit-2: Okay, I named it hearts.apng, instead of png and it worked, I was able to save it as animation but it saved as a gimp file in illustration below. Is this the way it is supposed to save? :oops:
Image

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Last edited by molly on Sat Aug 27, 2011 6:15 am, edited 2 times in total.

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Aug 27, 2011 5:59 am  (#123) 
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Posts: 998
MareroQ wrote:
For XP 32bit location "ui" is still different than the specified c: \ Program Files \ Gimp-2.7.3 \ share \ gimp \ 2.0 \ ui \ plug-ins.

Version Partha:
This is a development version of GIMP. Debug messages may appear here.
Error loading UI file 'C:\Program Files\Gimp-2.7.3\lib\gimp\2.0\plug-ins\share\g
imp\2.0\ui/plug-ins/plug-in-file-apng.ui': Failed to open file 'C:\Program Files
\Gimp-2.7.3\lib\gimp\2.0\plug-ins\share\gimp\2.0\ui/plug-ins/plug-in-file-apng.u
i': No such file or directory
(file-apng:1984): Gtk-CRITICAL **: gtk_container_add: assertion `GTK_IS_WIDGET (
widget)' failed


MareroQ,

I believe Rod is using Windows XP as well and it was working on his machine and I installed it on a Window 7 32-bit machine that I have lying around and it worked there as well. The point is that, my build depends on Gimp to provide the path now.
Quote:
Version JamesH:
Error loading UI file 'C:\GIMP-2.7\settings/plug-ins/plug-in-file-apng.ui': Fail
ed to open file 'C:\GIMP-2.7\settings/plug-ins/plug-in-file-apng.ui': No such fi
le or directory
(file-apng:2140): Gtk-CRITICAL **: gtk_container_add: assertion `GTK_IS_WIDGET (
widget)' failed.

Standardization also requires naming - file *.png (Partha) or *.apng (JamesH)?


I have not changed any file name extensions since this was not in the original specs. So, I don't know how I can help here unless there are some guidelines someone can point to regarding the file extensions specified by the APNG developer group.

Thanks,
Partha


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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Aug 27, 2011 9:02 am  (#124) 
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Posts: 5870
JamesH
yes it is compatible with the standard png plugin and accept ".apng" added as postfix in the file name, without the need to open more hidden dialog

Cool ! thank you

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Aug 27, 2011 12:02 pm  (#125) 
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btw, guys... when the plug-in was just released, a lot of people complained about this problem:
libpng error: width and/or height in the first frame's fcTL don't match the ones in IHDR

That happened because the author used last frame instead of the first for the IHDR width/height.

This is original buggy code
  drawable = gimp_drawable_get (layers[0]);
  drawable_type = gimp_drawable_type (layers[0]);


This is how I fixed it:
  drawable = gimp_drawable_get (layers[nlayers-1]);
  drawable_type = gimp_drawable_type (layers[nlayers-1]);



It's too bad the author abandoned the project, there are still some serious bugs left. Maybe you guys could take a look at them, and post the message to the author, if you'll figure out how to fix them:
http://sourceforge.net/tracker/?group_i ... id=1306996


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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Aug 27, 2011 10:14 pm  (#126) 
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MareroQ wrote:
For XP 32bit location "ui" is still different than the specified c: \ Program Files \ Gimp-2.7.3 \ share \ gimp \ 2.0 \ ui \ plug-ins.

Version Partha:
This is a development version of GIMP. Debug messages may appear here.
Error loading UI file 'C:\Program Files\Gimp-2.7.3\lib\gimp\2.0\plug-ins\share\g
imp\2.0\ui/plug-ins/plug-in-file-apng.ui': Failed to open file 'C:\Program Files
\Gimp-2.7.3\lib\gimp\2.0\plug-ins\share\gimp\2.0\ui/plug-ins/plug-in-file-apng.u
i': No such file or directory
(file-apng:1984): Gtk-CRITICAL **: gtk_container_add: assertion `GTK_IS_WIDGET (
widget)' failed



Put the NEW ui here Mr Q. :)
c:\Program Files\Gimp-2.7.3\share\gimp\2.0\ui\plug-ins)

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Sep 10, 2011 9:50 pm  (#127) 
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Quote:
It's too bad the author abandoned the project, there are still some serious bugs left. Maybe you guys could take a look at them, and post the message to the author, if you'll figure out how to fix them:
http://sourceforge.net/tracker/?group_i ... id=1306996


Damn..VERY serious bug left !

1 "Indexed saving support broken"

2 "Alpha channel are saved incorrectly" :bawl

3 "Interlaced PNG files are loaded incorrectly "

only 3 bugs reported but all critical

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sat Sep 10, 2011 10:06 pm  (#128) 
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Looking better seems that the developer IS doing something,
http://sourceforge.net/users/daisuken/
he proposed a lot of patches (last in 2011-07-09 )

But for sure he can't do much if the issues derive from the library he uses, (except then propose patches for the library's bugs)

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sun Sep 11, 2011 4:20 am  (#129) 
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Posts: 64
The bugs are in plugin code, not in the library.

For example, the alpha channel bug happens when the first frame is fully opaque, and other frames has transparent areas. GIMP saves internal memory by storing first frame in 3 bytes per pixel, and other frames at 4 bytes per pixel. The plugin checks the first frame, and decides to save the whole thing in 3 bytes per pixel format, which is certainly wrong.

Oh well, it's open source, so someone will fix it eventually.


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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sun Sep 11, 2011 5:06 am  (#130) 
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Posts: 5870
MaxSt wrote:

For example, the alpha channel bug happens when the first frame is fully opaque, and other frames has transparent areas. .


Oh this for me is ALMOST a good new
I was seriously worried by the bad support for alpha channel,

remain a serious bug but luckily in most user case if there is a fully opaque layer that would be the BG.

BTW i share your hope for somebody fixings that 3 nasty bugs

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Thu Sep 22, 2011 9:41 am  (#131) 
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4 bugs i just found another:
if the layers are not all exactly at image size the plugin will fail, giving no clue why

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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Sun Oct 09, 2011 12:40 pm  (#132) 
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PhotoComix wrote:
4 bugs i just found another:
if the layers are not all exactly at image size the plugin will fail, giving no clue why


That bug only happens in Partha's version, older versions worked fine.


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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Tue Nov 08, 2011 2:28 am  (#133) 
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The reason for that last bug was a problem in libpng+apng v.1.5.4 and v.1.5.5

It is fixed in libpng+apng v.1.5.6


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 Post subject: Re: Gimp APNG Plug-in Compiled for Windows
PostPosted: Tue Nov 08, 2011 3:15 am  (#134) 
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I can't get it to work with Gimp-2.6.11 in Windows XP....sadly.

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