Hi Andreas, Andreas Nagel wrote: > Hi Sakari, > > thanks for helping. > >>> My "sensor" (TVP5146) already provides YUV data, so I can skip the >>> previewer. I tried setting the input and output pad of the resizer >>> subdevice to incoming resolution (input pad) and desired resolution >>> (output pad). For example: 720x576 --> 352x288. But it didn't work >>> out quite well. >> How did it not work quite well? :) > > Not sure, if I recall all the details. I haven't done much in this area > for a few weeks now. > Currently, I actually can configure the resizer, but then > VIDIOC_STREAMON fails with EINVAL when I configure the devnode. Don't > know why. > I do connect the resizer source to the resizer output (devnode) and then > capture from there. I think it is /dev/video6. > If I leave the resizer out and connect the ccdc source to the ccdc > output (/dev/video2), capturing works just fine. > > One reason could be, that the resizer isn't supported right now. (You > remember, I have to use Technexion's TI kernel 2.6.37 with its exotic > ISP driver. ;-) ) Ouch. There have been many bugfixes and improvements in the omap3isp driver since it was merged to mainline in this area. I don't know what TI has backported to their own kernel; it could be something is missing there. The fact the ABI and API are incompatible with what's now in mainline suggests that quite a lot may be missing. > That's, what one could interpret from this TI wiki page. > http://processors.wiki.ti.com/index.php/UserGuideOmap35xCaptureDriver_PSP_04.02.00.07#Architecture > > Under the block diagram, there's a note saying, that only the path with > the continuous line has been validated. So, the dotted lines are ISP > paths that might not have been validated ("supported"?) yet. That's very possible. > (I might add, that all this is part of my master thesis and resizing > would be a nice-to-have goal, but not a must-have. So I can live with it > if it won't work.) Good to hear that... I guess the best starting point to get things working would definitely be the mainline kernel. The rest is at best unsupported. -- Kind regards, Sakari Ailus sakari.ailus@xxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
