[Qt-interest] Image format plug-in for RAW and PhotoShop?

[Mihail Naydenov]

Grrrrr, the nasty Ctrl-Enter in yahoo mail >:(

---- Original Message ----

> From: "
> ymailto="mailto:Oliver.Knoll at comit.ch" 
> href="mailto:Oliver.Knoll at comit.ch">Oliver.Knoll at comit.ch" <
> ymailto="mailto:Oliver.Knoll at comit.ch" 
> href="mailto:Oliver.Knoll at comit.ch">Oliver.Knoll at comit.ch>
> To: 
> ymailto="mailto:qt-interest at trolltech.com" 
> href="mailto:qt-interest at trolltech.com">qt-interest at trolltech.com
> 
> Sent: Tue, May 4, 2010 6:44:36 PM
> Subject: Re: [Qt-interest] Image 
> format plug-in for RAW and PhotoShop?
> 
> Chris Meyer wrote on 
> Tuesday, May 04, 2010 5:27 PM:

> Does anyone know 
> if there 
> image format plug-ins available for RAW
> (.CR2, .NEF) or 
> 
> PhotoShop (.psd) files?

>I am not aware of any Qt image format plugin, but 
> 
> you could maybe come up with your own, using ImageMagick (if license 
> conditions 
> allow):

>  http://www.imagemagick.org/
  
> 
> http://www.imagemagick.org/Magick++/

> ImageMagick explicitly 
> lists the 
> abovementioned formats as supported: 
> 
> http://www.imagemagick.org/script/formats.php

> The only tricky part would 
> 
> be how to efficiently convert from the Magick++ data structure 'Image' 
> to Qt's 
> QImage structure (for 32 bit rgba data it would maybe not so 
> difficult, keeping 
> in mind data alignmend and endianess etc.). A 
> practical and lazy hack (for small 
> image data) for me was to save a 
> QImage into a QByteArray as "PNG" and read this 
> from memory into the 
> Magick 'Image' and vice versa: store the Magick 'Image' 
> in-memory as 
> PNG and use QImage::read to read that "PNG". Performance was okay 
> for 
> me in practise. If you come up with an efficient way to convert Magick++ 
> 
> Image <-> QImage I would be interested to know ;)


You  can also try FreeImage*, the last version also support RAW.

Also the nice thing is that FreeImage and QImage share compatible alignment, so you can create QImage forom raw data (FreeImage)
*without* coping the data! (This is if the formats are the same)

sorry for the double post :(
MihailNaydenov

*http://freeimage.sourceforge.net/



Cheers, 
> Oliver
-- 
Oliver Knoll
Dipl. 
> Informatik-Ing. ETH
COMIT AG - ++41 79 
> 520 95 
> 22
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