[poppler] DeviceN support in splash

[Albert Astals Cid]

El Divendres, 13 de juliol de 2012, a les 11:07:04, Thomas Freitag va 
escriure:
> Hi,
> 
> Am 15.05.2012 09:26, schrieb Thomas Freitag:
> > Am 14.05.2012 20:01, schrieb Albert Astals Cid:
> >> El Dilluns, 2 d'abril de 2012, a les 07:25:36, Thomas Freitag va
> >> 
> >> escriure:
> >>> Am 30.03.2012 10:57, schrieb Thomas Freitag:
> >>>> Hi Albert!
> >>>> 
> >>>> Last weekend I nearly finished the DeviceN support in splash. It runs
> >>>> through my regtest, and there are only a few outputs I want to have a
> >>>> deeper look into it. If You think there is time left to look into it
> >>>> before freeze the actual version, I'll try to finish it this weekend.
> >>> 
> >>> This is now the final patch for DeviceN support. It runs successfully
> >>> through my regression tests. It has only a few minor changes to the
> >>> beta
> >>> patch which are needed to solve a few regressions.
> >> 
> >> Since we are now open for new features in master, can you send a
> >> rebased patch
> >> against current master?
> > 
> > Thanks for the reminder, it's actual the 3rd point on my poppler time
> > schedule:
> > 1. The highest priority has a reliable patch for bug 49523, because we
> > should render PDFs again we already could render prior 19.0. I already
> > prepared a new patch, but I need to regtest it. Hopefully I can upload
> > it thursday morning.
> 
> Thanks for commiting!
> 
> > 2. The next point is the revised blend mode implementation in splash
> > CMYK (also needed for DeviceN)
> 
> Just mailed.
> 
> > 3. Then I'll plan to send a rebased patch for the DeviceN support in
> > splash.
> 
> Okay, would be the next point, after You commited patch for point 2 (or
> reject it, but I'm quite sure that this will not be the case). But
> because there is a lot of time went by: Do You think You're able to
> check the patch before releasing 0.22.0? Otherwise I could continue with

We don't have a date for 0.22 yet (bad Albert, bad!) so i think i could, 
depending on how big you think it's going to be :D

> 
> 1. Enhancement for thin lines (bug #37347)
> 
> That patch is much smaller than DeviceN support in splash, but will
> cause a lot of time for regtesting (remember: round about 36 % of output
> will change)
> 
> or
> 
> 2. Make page rendering thread safe (bug #50992)
> 
> Also a smaller patch. But here I have another small problem: To test
> that the patch will make page rendering thread safe, I made several
> changes in pdftoppm but only for the windows platform. Of course I could
> do that for unix, too. But do we really need multi threading in
> pdftoppm? In our regtest we already speed it up with starting two
> processes, one for odd and one for even pages. If I now change pdftoppm
> to use multiple threads, it could slow down (I'm not sure, haven't
> tested that, just a guess) our regtest a little bit because of the
> overhead of thread handling on a dual core machine (but definetely will
> speed it up on a quad core machine).
> Or should I spend an additional option to use more than one thread?

i don't think adding threading to pdftoppm makes much sense (other than for 
testing but for that you probably want a simpler, with less options/parameters 
code)

Whatever you decide to work it's up to you, your time, your work, you decide 
:-)

Cheers,
  Albert

> 
> Cheers,
> Thomas
> 
> > The following points would be
> > 4. A fix for bug 37347 and last but not least
> > 5. A patch for bug 49037, if nobody else has the mercy to do it.
> > 
> > Cheers,
> > Thomas
> > 
> >> Cheers,
> >> 
> >>    Albert
> >>> 
> >>> Cheers,
> >>> Thomas
> >>> 
> >>>> Here a first beta release for the support which I used to create the
> >>>> just mailed samples.
> >>>> 
> >>>> Regards,
> >>>> Thomas
> >>>> 
> >>>> 
> >>>> 
> >>>> _______________________________________________
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> >>>> poppler at lists.freedesktop.org
> >>>> http://lists.freedesktop.org/mailman/listinfo/poppler
> >> 
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> >> 
> >> .
> > 
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> > .
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