[libcamera-devel] Need help with RaspberryPI pipeline bringup on Android

[Naushir Patuck]

Hi Roman,

Not sure if the email thread is the best place to discuss your issue, so
perhaps create a bug report at bugs.libcamera.org.
Onto the actual issue - it seems like the ISP gets starved of request
buffers and fails to produce output and the pipeline handler stalls.
The reason it gets starved is likely to be due to the following errors in
the log:

10-07 14:37:46.726   360   442 D libcamera: DEBUG RPISTREAM
rpi_stream.cpp:226 Queuing buffer 1048579 for ISP Output1
10-07 14:37:46.727   360   442 E libcamera: ERROR RPISTREAM
rpi_stream.cpp:231 Failed to queue buffer for ISP Output1
10-07 14:37:46.727   360   442 D libcamera: DEBUG RPISTREAM
rpi_stream.cpp:226 Queuing buffer 1048580 for ISP Output1
10-07 14:37:46.727   360   442 E libcamera: ERROR RPISTREAM
rpi_stream.cpp:231 Failed to queue buffer for ISP Output1
10-07 14:37:46.727   360   442 D libcamera: DEBUG RPISTREAM
rpi_stream.cpp:226 Queuing buffer 1048581 for ISP Output1
10-07 14:37:46.728   360   442 E libcamera: ERROR RPISTREAM
rpi_stream.cpp:231 Failed to queue buffer for ISP Output1

I cannot tell further why the qbuf ioctl has failed.  Perhaps something in
dmesg would tell us?  Could you expand on how your request
buffers have been allocated?

Thanks,
Naush


On Mon, 8 Nov 2021 at 20:20, Roman Stratiienko <r.stratiienko at gmail.com>
wrote:

> Yes, I am on the very latest rpi branch without any custom patches. I had
> to upgrade it because of new media control used in mainline libcamera.
>
> пн, 8 нояб. 2021 г., 22:12 Kieran Bingham <kieran.bingham at ideasonboard.com
> >:
>
>> Hi Roman,
>>
>> Quoting Roman Stratiienko (2021-11-08 17:46:56)
>> > Hi guys,
>> >
>> > I have stuck with camera bring-up for Android. Could somebody who has
>> > experience in it help me to find a right way to solve this. Logs are
>> > available here:
>> > https://github.com/kbingham/libcamera/issues/31
>>
>> The RPi kernel, and pipeline handler have had a large change recently to
>> convert to using MediaController. It may require ensuring you have the
>> latest kernel from RPi, along with the latest libcamera.
>>
>> You mentioned that you have " rpi-kernel v5.10.y", do you know if this
>> contains the commits that update to the new MediaController drivers?
>>
>> I assume you are building your own kernel, so you'll want to make sure
>> you're on the (very, very) latest branch, and it might be something to
>> check on the RPi forums otherwise.
>>
>> --
>> Kieran
>>
>>
>> >
>> > Thanks in advance,
>> > Roman
>>
>
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