Details about gstreamer RGBx format

[maxilase]

Hello Gstreamer !

I have run into some issue about getting a videostream into my application.
I am senting an videostream via rtphpay to the server and I am getting it
for a client via rtspsrc.
The video stream is fine except one thing : the Red and Blue colors are
inverted.

My application is based on Qt and is taking the video stream frame by frame
with a QImage formatted 
<< QImage
<http://qt-project.org/doc/qt-4.8-snapshot/qimage.html#Format-enum> 
::Format_RGB32 --> The image is stored using a 32-bit RGB format
(0xffRRGGBB)>>
(You would have noticed that it is actually an ARGB format with the Alpha
channel set to OxFF).

My reception pipeline is like this :
rtspsrc location=RTSPURL ! rtph26depay ! avdec_h264 ! videoconvert ! appsink
name=sink sync=false caps="video/x-raw,format=RGBx"

Which is working with inverted Red and Green. Now the fun part is that when
i change the format to BGRx. It work...
So my question is "How does Gstreamer handle the RGBx format ?" is it
inverted ? I alredy checked those sites :  here
<http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/section-types-definitions.html> 
and  here <http://www.fourcc.org/rgb.php>  . And I didn't found helpful
informations.

Any idea ?



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