[XviD-devel] Packaging issues, copyright/license check and big drop in performance in 1.2.1 compared to 1.1.2 (amd64)

[Michael Militzer]

Hi,

actually, it wasn't very difficult to determine the authors of the IA64
code after all. Proper license headers have now been added to the IA64
source files on CVS head branch.

Regarding the info in:

> http://list.xvid.org/pipermail/xvid-devel/2009-February/006044.html
>
>> Or, get latest yasm. Latest yasm (I use 0.7.99.2161.) runs perfectly
>> with Xvid daily-snapshot.

Note that this refers to the xvid daily snapshot, which is the head
(1.3-dev) development branch. Since there are/were some differences in how
yasm and nasm handled amd64 code, yasm support was dropped in 1.2.1 for
simplicity. In the meanwhile some bugs were fixed in both yasm and nasm,
and xvid asm code got revised so that yasm is now supported again in CVS
head (1.3-dev) branch...

Regards,
Michael



Quoting Loïc Martin <loic.martin3 at gmail.com>:

> Michael Militzer wrote:
>> Hi,
>>
>> just a quick reply:
>>
>> As far as I know the different IA64 optimizations had been developed in
>> small groups of students. So likely the authors of the other IA64 files are
>> unfortunately not the same as those in src/dct/ia64_asm/fdct_ia64.s
>
> Would it be possible to either track the names of the students or at
> least assign the license in the headers (assuming the code sprint was
> meant to produce GPL-2+ code, which you might be able to know)?
>
> It's not a nitpick, I also consider those files to be open-source, but
> legally it would be really appreciated, not to say critical for
> repositories.
>
>> Regarding your 1.2.1 build problems: Have you checked the output of the
>> configure script on why asm optimizations got disabled? Note that you need
>> nasm for 1.2.1. Yasm won't do. Also you need a fairly recent nasm version
>> (>= 2.0).
>
> Thanks a lot, I hadn't seen that information anywhere in the release
> notes, and was mislead by
> http://list.xvid.org/pipermail/xvid-devel/2009-February/006044.html :
>> Or, get latest yasm. Latest yasm (I use 0.7.99.2161.) runs perfectly
>> with Xvid daily-snapshot.
> I must say I even tried with latest yasm (r2171) and it didn't work. I
> can't count the hours I lost trying to figure a way to get xvidcore work
> with yasm as it used to.
>
> Cheers,
> Loïc
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