[gst-devel] getting GdkPixbuf from gdkpixbufsink

[mapping at sheerman-chase.org.uk]

Hello all,

I am looking for some help getting the object GdkPixbuf from  
gdkpixbufsink. I am working in image processing so I want to get the  
image buffer for each frame. My priorities are to have a reliable and  
conceptually simple way of getting the buffer.

I have started by modifying gst-player-0.0.0, changed it to use the  
gdkpixbufsink sink and waiting to process messages on the bus. I am  
seeing the element/pixbuf messages without a problem. I then call the  
following on the bus message:

buff = gst_structure_get_value (msg->structure,"pixbuf");

which gives me a non-zero pointer. I was expecting that is a GdkPixbuf  
object. The problem I get is when I do GDK_IS_PIXBUF(buff) it returns  
false. Any ideas why?

Or am I meant to retrieve "last-pixbuf" from the sink directly?

If more detail is needed, the code is here:  
http://www.sheerman-chase.org.uk/temp/gst-player-pixel.tar.gz

Tim