On Tue, 31 May 2011, Koen Kooi wrote:

> 
> Op 31 mei 2011, om 15:42 heeft javier Martin het volgende geschreven:
> 
> > On 31 May 2011 15:34, Koen Kooi <k...@beagleboard.org> wrote:
> >> root@beagleboardxMC:~# yavta -f SGRBG8 -s 320x240 -n 4 --capture=10 --skip 
> >> 3 -F `media-ctl -e "OMAP3 ISP CCDC output"`
> >> Device /dev/video2 opened.
> >> Device `OMAP3 ISP CCDC output' on `media' is a video capture device.
> >> Video format set: SGRBG8 (47425247) 320x240 buffer size 76800
> >> Video format: SGRBG8 (47425247) 320x240 buffer size 76800
> >> 4 buffers requested.
> >> length: 76800 offset: 0
> >> Buffer 0 mapped at address 0x402cf000.
> >> length: 76800 offset: 77824
> >> Buffer 1 mapped at address 0x402fe000.
> >> length: 76800 offset: 155648
> >> Buffer 2 mapped at address 0x40362000.
> >> length: 76800 offset: 233472
> >> Buffer 3 mapped at address 0x40416000.
> >> 0 (0) [-] 4294967295 76800 bytes 167.403289 1306829219.931121 0.002 fps
> >> 1 (1) [-] 4294967295 76800 bytes 167.633148 1306829220.160980 4.350 fps
> >> 2 (2) [-] 4294967295 76800 bytes 167.744506 1306829220.272308 8.980 fps
> >> 3 (3) [-] 4294967295 76800 bytes 167.855865 1306829220.383667 8.980 fps
> >> 4 (0) [-] 4294967295 76800 bytes 167.967193 1306829220.495025 8.982 fps
> >> 5 (1) [-] 4294967295 76800 bytes 168.078552 1306829220.606384 8.980 fps
> >> 6 (2) [-] 4294967295 76800 bytes 168.189910 1306829220.717742 8.980 fps
> >> 7 (3) [-] 4294967295 76800 bytes 168.301269 1306829220.829071 8.980 fps
> >> 8 (0) [-] 4294967295 76800 bytes 168.412597 1306829220.940429 8.982 fps
> >> 9 (1) [-] 4294967295 76800 bytes 168.523956 1306829221.051788 8.980 fps
> >> Captured 10 frames in 1.254212 seconds (7.973134 fps, 612336.670356 B/s).
> >> 4 buffers released.
> >> 
> >> So that seems to be working! I haven't checked the frames yet, but is 
> >> isn't throwing ISP errors anymore.
> > 
> > Great!
> > Do you have a monochrome version of the same sensor?
> 
> I think I only have the colour version, I got it with my leopard355 board way 
> back. 
> 
> So what can I do with an unpatched mediactl and unpatched yavta? Is it 
> already possible to point something like mplayer or gstreamer to a v4l2 
> node and see something? I lost the track of which patch goes where :)

If you're a lucky owner of an LCD on your bb-xM;) you might be able to do 
something similar, to what's described here

http://download.open-technology.de/BeagleBoard_xM-MT9P031/BBxM-MT9P031.txt

but both yavta and mplayer on the board, while short-circuiting the 
network;) I.e., pipe yavta output directly to mplayer.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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