Hi Janusz Sorry, this is not going to be a very detailed reply. It's been a long time since I've worked with VOU and AK8813(4). On Mon, 4 Jun 2012, Janusz Uzycki wrote: > Hi Guennadi. > > I am trying to force to proper work CS4954 encoder with sh4. > I want to use sh4 VOU in PAL mode (kernel 3.2.7). Do you have any experience > with AK881x and PAL? Yes, I think, I tested both PAL and NTSC modes. > If I set PAL mode (v4l2-ctl -s) VOUCR::MD is still configured for NTSC. This shouldn't be the case: look at sh_vou_s_std(). Can you try to add debugging to the driver to see, whether that function gets called, when you run v4l2-ctl? If not - either you're calling it wrongly, or there's a bug in it. If it is - see, whether it's not configuring VOUCR properly or somehow it gets reset again later. > I > noticed that VOU is limited to NTSC resolution: "Maximum destination image > size: 720 x 240 per field". You mean in the datasheet? I don't have it currently at hand, but I seem to remember, that there was a bug and the VOU does actually support a full PAL resolution too. I'm not 100% certain, though. > And indeed I had to change my encoder settings to > NTSC-M CCIR601 timing 720x480 (PAL synch freq. only) for synced (stable) color > video picture of BAR generated by the encoder (not VOU). On the other hand > VOUDSR register has bit-limit 1024x512 (enough for PAL 768x576 interlaced). > Another method for stable PAL picture (but 768x576) is change both VOUCR::MD > to PAL output mode and set the encoder to PAL mode. Then the green picture has > a bound about 480 line I think. > Unfortunately I can't still manage to work video data from VOU to the encoder > - green picture only. Do you have any test program for video v4l2 output? You can use gstreamer, e.g.: gst-launch -v filesrc location=x.avi ! decodebin ! ffmpegcolorspace ! \ video/x-raw-rgb,bpp=24 ! v4l2sink device=/dev/video0 tv-norm=PAL-B I also used a (possibly modified) program by Laurent (cc'ed) which either I - with his agreement - can re-send to you, or maybe he'd send you the original. > Does > the idea fb->v4l2 output > http://www.spinics.net/lists/linux-fbdev/msg01102.html is alive? More dead, than alive, I think. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- 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
