[poppler] About pdf to image

[杨辉强]

Hi, all:
   Thank Brad. I don't want to save images into files and then read files into memory.
The disk IO expense is high. So what's the utility from another application can do this job? Wish your advice.

Thank you!

On Sun, 18 Dec 2011 11:34:17 AM Brad Hards wrote:

This should have gone to a mailing list.

How are you possibly going to use the utility from another application and
copy to memory without making any code changes?

Brad



On 12/18/2011 08:47 AM, 杨辉强 wrote:
> Hi, all:
>    In web search engine, I want to support the pdf snapshot. So I want 
> to convert pdf files to images and save the images in a database. I 
> don't want to change the poppler code.
> Because that's notconvenient for upgrade the poppler's code.
>
> Thank you for your precious advices.
>
> On 12/17/2011 03:16 PM, Brad Hards wrote:
>> On Sat, 17 Dec 2011 02:09:21 PM 杨辉强 wrote:
>>>      I am a newbie to poppler. I use utils/pdftoppm.cc to convert a pdf
>>> file into jpeg images.The generated images are save to disk files. Now I
>>> wish to know whether it can save the images in memory such as a
>>> vector<std::string>.  Wishing you can give me some advices.
>> I'm sure that is possible, but you'd need to make some code changes (and
>> consider whether an arbitrary binary blob, containing nulls, is really a good
>> idea in a std::string). The code changes should basically be taking the
>> existing output writer and copying in to a memory location instead. I don't
>> see you'd need to make any real popper changes. How you integrate that depends
>> on the application you're trying to create.
>>
>> What is the end-use for this?
>>
>> Brad
>> _______________________________________________
>> poppler mailing list
>> poppler at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/poppler
>
>
> _______________________________________________
> poppler mailing list
> poppler at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/poppler

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/poppler/attachments/20111219/97fa6dd4/attachment.html>