convert PDF to BMP file with less time using C programming

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Hello All

I am a novice programmer and interested in learning C programming . I have a project to convert PDF to BMP . I need suggestions about this project and any ideas regarding how to work my way up .
The language that i am using is C programming .

Thanks a lot

Posted 20-Feb-13 5:33am

Venkata 007

Updated 20-Feb-13 5:35am

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enhzflep 20-Feb-13 11:52am

(1) "Less time" - less time than what?
(2) Do you wish to use libraries, or program it all yourself?

If you wish to code it yourself, I'd be tempted to port the javascript code (Mozilla's, I think) that will will display a pdf in a browser. Once you can render the pdf, you can save it to a bmp (or png, etc)

Creating PDFs is a considerably simpler task than rendering them - writing code to create them is not exactly the easiest code I've ever written..

Adobe's PDF v1.2 & v1.6 refferrence docs include simple, minimal examples of pdfs. You could always start by trying to convert them to an image - it would be a simpler task than porting the aforementioned javascript code. :)

Venkata 007 20-Feb-13 11:57am

1)Time is 1000 bitmaps in 100 seconds is the criteria .
2)Regarding Libraries , i think in C programming i have to code all the libraries my self .

enhzflep 20-Feb-13 12:31pm

Rendering 10 pages a second seems an arbitrary rate - even acrobat doesn't reach this speed all the time. Anyhow, I suggest you get the 1.2 and 1.6 specs and start reading and drinking lots of coffee or RedBull! :laugh:

Adobe pdf 1.2
Adobe pdf 1.6
Adobe AFM font specs

Also, the source code for pdftk may help save quite some time. http://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/

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Michael Haephrati · Accepted Answer · 2013-02-20T08:51:00

Well, it can work. "Display a PDF page" can also be when you use a virtual raster.
First, you need to find out the best suitable way to load and display the PDF pages.
Try [^]

Then, you can use BitBlt to copy the raster where the page is displayed into a bitmap and save it.
If you are progressing but need help, please send me your source code and I'll help you.

See also:
How to Read, Write and Edit PDF Files and Metadata using LEADTOOLS[^]

Michael Haephrati · Accepted Answer · 2013-02-20T08:37:00

Solution 1

You can load the pdf file and grab the screen as a bitmap

Posted 20-Feb-13 8:37am

Michael Haephrati

Comments

enhzflep 20-Feb-13 14:47pm

Oh yes. How exactly do you propose to do that at the rate of 100 pages a second?

enhzflep 20-Feb-13 15:16pm

Er, um - must be time for bed for me. I'm clearly out here by a factor of 10! Since the OP wants to do 1000 pages in 100 seconds, 10fps rather than 100fps. :oops:
Nice suggestion of PoDoFo as a means to extract the data before rendering. :thumbsup:

Michael Haephrati 20-Feb-13 15:28pm

Good night then. Hope I helped you