Re: Getting started with OMAP3 ISP

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On 2011-09-01 03:51, Enrico wrote:
On Wed, Aug 31, 2011 at 6:33 PM, Laurent Pinchart
<laurent.pinchart@xxxxxxxxxxxxxxxx>  wrote:
On http://git.linuxtv.org/pinchartl/media.git/shortlog/refs/heads/omap3isp-
omap3isp-next (sorry for not mentioning it), but the patch set was missing a
patch. I've sent a v2.

Thanks Laurent, i can confirm it is a step forward. With your tree and
patches (and my tvp5150 patch) i made a step forward:

Setting up link 16:0 ->  5:0 [1]
Setting up link 5:1 ->  6:0 [1]
Setting up format UYVY 720x628 on pad tvp5150 2-005c/0
Format set: UYVY 720x628
Setting up format UYVY 720x628 on pad OMAP3 ISP CCDC/0
Format set: UYVY 720x628

I'm at nearly the same point, but I'm getting a couple of strange messages:
# media-ctl -r -l '"tvp5150m1 2-005c":0->"OMAP3 ISP CCDC":0[1], "OMAP3 ISP CCDC":1->"OMAP3 ISP CCDC output":0[1]'
Resetting all links to inactive
Setting up link 16:0 -> 5:0 [1]
Setting up link 5:1 -> 6:0 [1]
# media-ctl -f '"tvp5150m1 2-005c":0[UYVY 720x480], "OMAP3 ISP CCDC":0[UYVY 720x480], "OMAP3 ISP CCDC":1[UYVY 720x480]'
Setting up format UYVY 720x480 on pad tvp5150m1 2-005c/0
Format set: unknown 720x480
Setting up format unknown 720x480 on pad OMAP3 ISP CCDC/0
Format set: unknown 720x480
Setting up format UYVY 720x480 on pad OMAP3 ISP CCDC/0
Format set: UYVY 720x480
Setting up format UYVY 720x480 on pad OMAP3 ISP CCDC/1
Format set: UYVY 720x480

# yavta -f UYVY -s 720x480 -n 6 --capture=6 -F /dev/video2
Device /dev/video2 opened.
Device `OMAP3 ISP CCDC output' on `media' is a video capture device.
Video format set: UYVY (59565955) 720x480 buffer size 691200
Video format: UYVY (59565955) 720x480 buffer size 691200
6 buffers requested.
length: 691200 offset: 0
Buffer 0 mapped at address 0x40211000.
length: 691200 offset: 692224
Buffer 1 mapped at address 0x402dc000.
length: 691200 offset: 1384448
Buffer 2 mapped at address 0x4047f000.
length: 691200 offset: 2076672
Buffer 3 mapped at address 0x40614000.
length: 691200 offset: 2768896
Buffer 4 mapped at address 0x40792000.
Buffer 5 mapped at address 0x40854000.
Unable to start streaming: 32.

What does 'Format set: unknown 720x480' mean from media-ctl?
Why 'Unable to start streaming: 32' - is this an EPIPE error?


Now the problem is that i can't get a capture with yavta, it blocks on
the VIDIO_DQBUF ioctl. Probably something wrong in my patch.

I tried also to route it through the resizer but nothing changes.

Is it normal that --enum-formats returns this?

Device /dev/video2 opened.
Device `OMAP3 ISP CCDC output' on `media' is a video capture device.
- Available formats:
Video format:  (00000000) 0x0 buffer size 0

Thanks,

Enrico

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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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