[meta-freescale] Video overlay on sabresd

[Prabhu S]

How about this?
/unit_tests/mxc_v4l2_output.out -iw 1024 -ih 768 -ow 1024 -oh 768 -d
/dev/video17 -fr 30 -l 10 -f YUYV ./your-file.yuyv

/dev/video17 is for overlay

On Tue, May 19, 2015 at 11:16 AM, Nikolay Dimitrov <picmaster at mail.bg>
wrote:

> Hi guys,
>
> I'm trying to get the video overlay working on imx6q sabresd's HDMI.
> Here's the kernel command line:
>
> console=ttymxc0,115200 root=/dev/mmcblk2p2 rootwait rw
> video=mxcfb0:dev=hdmi,1280x720M at 60,if=RGB2
> 4,bpp=32 fbmem=28M
>
> This is the kernel version:
>
> # uname -a
> Linux imx6qsabresd 3.14.28-1.0.0_ga+g91cf351 #1 SMP PREEMPT Tue May 19
> 17:32:51 EEST 2015 armv7l
> GNU/Linux
>
> Here are the framebuffer devices nodes:
>
> # ls -lh /dev/fb*
> crw-rw----    1 root     video      29,   0 Jan  1  1970 /dev/fb0
> crw-rw----    1 root     video      29,   1 Jan  1  1970 /dev/fb1
> crw-rw----    1 root     video      29,   2 Jan  1  1970 /dev/fb2
> crw-rw----    1 root     video      29,   3 Jan  1  1970 /dev/fb3
>
> I can write arbitrary data on /dev/fb0 and see it on screen, like this:
>
> # cat /bin/busybox.nosuid > /dev/fb0
>
> But I can't write to /dev/fb1:
>
> # cat /bin/busybox.nosuid > /dev/fb1
> cat: write error: No space left on device
>
> I'm assuming that fb0 is the background layer, and fb1 is the
> foreground IPU layer.
>
> So the question is - how to make the foreground (fb1) layer working at
> all? Should I configure mxcfb1 in the bootargs, or it needs some IOCTL
> in /dev/fb1 to enable the device?
>
> Thanks in advance. Regards,
> Nikolay
> --
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