[poppler] Migrating poppler to liblcms2 from liblcms1

[Albert Astals Cid]

El Dimecres, 18 de gener de 2012, a les 18:24:52, Koji Otani va escriure:
> Hi.
> 
> I mesured performance with some PDF files.
> Poppler with lcms2 was slower than one with lcms1 by 5 - 10 %.
> Is it not acceptable?

5% to 10% of slowlyness for no gain seems a bit too bad, do you have any 
contact with the lcms author at all? We should contact him about what is his 
opinion about why lcms2 seems to be slower than lcms1, could you do that? Or 
prefer me to do it?

Cheers,
  Albert

> -------
> Koji Otani
> 
> From: Koji Otani <sho at bbr.jp>
> Subject: Re: [poppler] Migrating poppler to liblcms2 from liblcms1
> Date: Mon, 16 Jan 2012 15:09:02 +0900 (JST)
> Message-ID: <20120116.150902.69540157.sho at bbr.jp>
> 
> sho> From: Albert Astals Cid <aacid at kde.org>
> sho> Subject: Re: [poppler] Migrating poppler to liblcms2 from liblcms1
> sho> Date: Fri, 13 Jan 2012 18:47:10 +0100
> sho> Message-ID: <2206093.FOZ66yNrbT at xps>
> sho>
> sho> aacid> El Divendres, 13 de gener de 2012, a les 18:39:56, Koji Otani va
> escriure: sho> aacid> > Sorry, There is a silly bug in previous path.
> sho> aacid> > Please use this patch.
> sho> aacid>
> sho> aacid> I sent a similar patch ages ago to the list, then i realized
> lcms2 was giving sho> aacid> us much worse performance numbers than lcms1
> and dropped the patch. Have you sho> aacid> done some measuing of the
> performance?
> sho> aacid>
> sho>
> sho> Sorry, I didn't know that. I'll do some more investigation.
> sho> ---
> sho> Koji Otani.
> sho>
> sho> aacid>
> sho> aacid> > --------
> sho> aacid> > Koji Otani.
> sho> aacid> >
> sho> aacid> > From: Koji Otani <sho at bbr.jp>
> sho> aacid> > Subject: [poppler] Migrating poppler to liblcms2 from liblcms1
> sho> aacid> > Date: Fri, 13 Jan 2012 18:26:25 +0900 (JST)
> sho> aacid> > Message-ID: <20120113.182625.27577732.sho at bbr.jp>
> sho> aacid> >
> sho> aacid> > sho> Hi,
> sho> aacid> > sho> I'm Koji Otani
> sho> aacid> > sho>
> sho> aacid> > sho> poppler is using liblcms1 for color-management.
> sho> aacid> > sho> But liblcms1 is not maintained any more upstream as it is
> sho> aacid> > sho> replaced by liblcms2. liblcms1 has no good protection
> against sho> aacid> > sho> crashes (segmentation faults) and issues with
> color accuracy. sho> aacid> > sho>
> sho> aacid> > sho> So, I think that we should poppler from liblcms1 to
> liblcms2. sho> aacid> > sho>
> sho> aacid> > sho> I made a patch to do so and attach it.
> sho> aacid> > sho> It can also use liblcms1 for old platform.
> sho> aacid> > sho>
> sho> aacid> > sho> Please check it and apply it to the repository.
> sho> aacid> > sho>
> sho> aacid> > sho> Thanks in advance.
> sho> aacid> > sho>
> sho> aacid> > sho> ----------
> sho> aacid> > sho> Koji Otani
> sho> aacid> > sho>
> sho> aacid> > sho>
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