Re: create a pixmap from raw RGB buffer

[zaheer ahmad <zaheer mot gmail com>]

hi richard,

Thanks for your reply.

I failed to mention that the RGB is a 16 bit per pixel data so if i have to use cairo surface, i need to convert it to 32 bit (both 24,32) which is costly. I already have this working solution, but i would like to avoid the conversion..

at this point neither cairo/gdk(pixmap,pixbuf) seem to have this.. iam inclined to use a XPixmap/XPutImage and convert to pixmap..or if there is a way with cairo xlib surface..

thanks,
Zaheer

On Fri, Feb 19, 2010 at 12:39 PM, richard boaz <ivor boaz gmail com> wrote:

hi,

you should be using cairo to do this if you're not already.

see here for a little discussion on your problem:

http://lists.cairographics.org/archives/cairo/2008-April/013780.html

cheers,

richard

On Fri, Feb 19, 2010 at 6:42 AM, zaheer ahmad <zaheer mot gmail com> wrote:

hi,

I have a raw RGB data and would like to create a pixmap from it. i dont seem to find a relevant api for this. The ones that we tried gdk_pixmap_create_from_data seems to support only two colors and gdk_pixbuf_new_from_data has a max of 8 color depth.. 

Usecase: i have a plugin which gives raw RGB pixels and i would like to blend that on the browser window (convert RGB to pixmap -> gdk_set_source_pixmap on to browser cairo context). 

Appreciate any help.

thanks,

Zaheer

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