[poppler] pdftoppm hang
Thomas.Freitag at kabelmail.de
Fri Apr 20 06:12:38 PDT 2012
Am 20.04.2012 14:55, schrieb Adrian Johnson:
> On 20/04/12 21:44, Thomas Freitag wrote:
>> Am 20.04.2012 13:47, schrieb Thomas Freitag:
>>> Am 16.04.2012 22:53, schrieb Ralph:
>>>> Hey Thomas,
>>>> Here's the PDF in question. Quite a nasty one imho ;)
>>>> Thanks for getting back to me, sorry for the delay.
>>> Hey Ralph!
>>> In the meantime I found some time to have a look into it: The PDF has
>>> 12153 image masks in pattern colorspace. My first try to render it
>>> under Windows with pdftoppm compiled in debug mode dies after 22
>>> minutes with out of memory.
>>> Then I encountered, that my implementation of colorizing image masks
>>> in pattern colorspace in splash could be optimized. I gave it a try,
>>> and now I'm able to render it in 250 seconds (still Windows debug
>>> mode). It's still not so fast, but at least it works.
>> Additional information:
>> Under Unix 64 bit release mode it takes now 74 seconds. But You can use
>> pdftocairo (only 18 seconds) if You accept, that cairo isn't able to
>> render image masks in pattern colorspace correctly :-)
> Are you using git master? The fix for bug 47739 should have fixed image
> masks with patterns in cairo output.
I wasn't sure, therefore I just made an additional test with git master:
nothing changed here, so rendering is still not okay with pdftocairo.
But because I got the PDF in private from Ralph, I'm not able to give it
to You. Please ask Ralph,
>>> My problem now is, that my code base is in the meantime completely
>>> different than git master, because Albert wasn't able to commit my
>>> DeviceN implementation and suspend it until 0.22. Therefore I opened a
>>> bug: https://bugs.freedesktop.org/show_bug.cgi?id=48964. I need to
>>> discuss it with Albert in which order my enhancements could be committed.
>>> At least I'll regtest my changes coming weekend, and perhaps I create
>>> a patch for it only...
>>> BTW, it would probably help if You can send the PDF also to Albert...
>>> On Wednesday, April 11, 2012 at 6:49 AM, Thomas Freitag wrote:
>>>> Am 11.04.2012 15:35, schrieb Ralph:
>>>>> Hi Folks,
>>>>> I have a PDF file that's causing pdftoppm to hang. Looking at an strace shows that it's doing *something* but it's taking much longer than expected (at least over a few minutes). This is present on 0.18.3 and 0.19.2.
>>>>> I would attach the file to a bug post, but I'd rather email it out directly as it's a customers PDF and not mine. Who should I send this bugger to?
>>>> If You don't care, send it to me in private. Then I'll have a look at it
>>>> probably next weekend.
>>>>> Thanks for all the help,
>>>> poppler mailing list
>>>> poppler at lists.freedesktop.org (mailto:poppler at lists.freedesktop.org)
>>> poppler mailing list
>>> poppler at lists.freedesktop.org
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