[PyOpenGL-Users] q - glDrawPixels with YCbCr data?

[David M. <re...@or...>]

Hi all,

I've been developing a python app using the FLTK widgets (via pyFLTK).

A critical part of the app is drawing video frames onto a GL window via
glDrawPixels. (FLTK offers very basic support for GL windows, via its
Fl_GL_Window class).

At the moment, it's working nicely as long as I pass the pixels data in
RGB format. But video editing works mainly with YCbCr format data, and
converting the data into RGB format is very costly for CPU cycles -
takes around 20ms on my 2GHz box.

I've been told on #opengl that there is a way to set up an GL window so
that if passed YCbCr data, it will display with correct colours.

I'm a complete n00b with all things GL, I haven't got weeks to meditate
on the Red Book etc.

Is there a simple straightforward way via PyOpenGL to set up a GL window
so that it can work with YCbCr data passed in via glDrawPixels?

All help appreciated

Cheers
David