DirectFB Questions

GoogleGroups
1

Basically, what I want to be able to do is run a mpeg video while
moving graphics around at the same time. For example, have a video
running in the background with the time running being displayed "on
top" of the video. It seems the best way to do this is to use
DirectFB's capabilities, however I have not been able to compile the
DirectFB-extra package that has the ability to show mpeg videos. Has
anyone been able to compile this?
If that isn't possible, then I would use omapfbplay and have that
running at the same time as my app. But for that to work I would need
directFB to be running on /dev/fb1, so again, has anyone been able to
do that? I was able to get it to run on /dev/fb1, but the colors are
messed up, and it doesn't look like DirectFB can support the right
color space (according to http://www.directfb.org/docs/directfbrc.5.html)
Your help is very much appreciated.

2

Hi Jesse,

The problem with directFB and omap 3530 is that neither an SGX, nor a DSP driver have been done for them at the moment.
So, it does mean that all calculations will be done by software.
Best regards,

Maxime

3

(I sent this Saturday from webmail and didn't see it come through. Sorry if it double posts.)

Jesse wrote:

Basically, what I want to be able to do is run a mpeg video while
moving graphics around at the same time. For example, have a video

This is possible, though it took a progressive series of hacks. Our project is several months late so I haven't had time to do the proper thing and develop a DirectFB driver.

I did it by running MPlayer in fb0 (the only place it will run, as far as I can tell) Prior to that, I temporarily init DirectFB, render a font to a buffer, and then save the raw image data out, along with some font metrics. Then I use some heavily refactored code from omapfbplay to init fb1, with a simple software blitter. You have to set the color mode of the overlay appropriately - I'm not sure what it defaults to. I have color key transparency turned on - the location of the text is dark in my videos, so the jagged edges aren't noticeable.