[maemo-developers] Efficient Video-Texture Implementation

[From: Mohammed Hassan]

On Thu, 2010-10-21 at 21:57 +0200, ext Pavel Rojtberg wrote:
> Hi,
> 
> I am trying to implement a video see-through using the N900 and
> OpenGL. Therefore I need a fast way to upload the frames captured by
> the camera to a texture which I can then transform. 
> The bottleneck is that I have to move about 4MB of data around - per
> frame..
> I have heard that there is a fast-path for such an usecase in the
> hardware, which is also exposed on the iPhone. (Basically getting a
> texture handle to the frame data directly - without copying data
> around)
> What is the situation on Maemo/ Meego? Any way to use the fast path?

That's texture streaming. Check Rob Clark's code here:
http://gitorious.org/gst-plugin-bc

It seems doable but I have no experience with it.

Cheers,

-- 
Senior Software Engineer
Maemo Software