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

[Roman Stratiienko]

Hi Naushir,

Thanks a lot for your support. You were right, it returns with error
in that place. I'm correctly investigating why there is no buffer in
the cache.

вт, 9 нояб. 2021 г. в 12:32, Naushir Patuck <naush at raspberrypi.com>:
>
>
> On Tue, 9 Nov 2021 at 10:26, Naushir Patuck <naush at raspberrypi.com> wrote:
>>
>> 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?
>
>
> Just a pointer for you to investigate... The logs suggest that V4L2VideoDevice::queueBuffer() fails at:
>
> ret = cache_->get(*buffer);
> if (ret < 0)
>         return ret;
>
> as all other error paths through that function log a message, and we see none.  So it may not necessarily be the ioctl that fails.
>
> Naush
>
>>
>>
>> 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