Pipeline stops executing

[geospatialdeveloper]

I'm running a pipeline with custom GStreamer plugins. It works when the
pipeline is simple and linear.
When I custom tees so that only one subchain executes at anytime based on
certain conditions, the pipeline stops executing.
This is the error I am seeing when I have logging turned on

0:00:07.653601556     8      0x1c36cf0 FIXME  
             default
gstutils.c:3766:gst_pad_create_stream_id_internal:<LMSMessaging:src>
Creating random stream-id, consider implementing a deterministic way of
creating a stream-id
0:00:12.815967936     8      0x1c36b70 WARN              
basesink gstbasesink.c:3374:gst_base_sink_chain_unlocked:<OutputAll>
warning: Internal data flow problem.
0:00:12.815986109     8      0x1c36b70 WARN              
basesink gstbasesink.c:3374:gst_base_sink_chain_unlocked:<OutputAll>
warning: Received buffer without a new-segment. Assuming timestamps start
from 0.
0:00:12.816005406     8      0x1c36b70 INFO   
    GST_ERROR_SYSTEM
gstelement.c:1837:gst_element_message_full:<OutputAll> posting message:
Internal data flow problem.
0:00:12.816019744     8      0x1c36b70 INFO   
    GST_ERROR_SYSTEM
gstelement.c:1860:gst_element_message_full:<OutputAll> posted warning
message: Internal data flow problem.



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[gotsring]

Kind of hard to debug that, there's not much to go on. Also, it looks like
you had terminal colors on, maybe disable those before pasting a log.

Is there any reason you're using a custom tee as opposed to something like a
valve?
https://gstreamer.freedesktop.org/documentation/coreelements/valve.html?gi-language=c



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[Dass, Reena A Collins]

I have removed the terminal colors and updated the entire log.

The valve will not work in this particular scenario.

-----Original Message-----
From: gstreamer-devel <[hidden email]> On Behalf Of gotsring
Sent: Tuesday, February 2, 2021 6:50 PM
To: [hidden email]
Subject: [External] Re: Pipeline stops executing

Kind of hard to debug that, there's not much to go on. Also, it looks like you had terminal colors on, maybe disable those before pasting a log.

Is there any reason you're using a custom tee as opposed to something like a valve?
https://urldefense.com/v3/__https://gstreamer.freedesktop.org/documentation/coreelements/valve.html?gi-language=c__;!!MvWE!XElWmRMTFNdycHGab7ubhq4axjirIdoQ2Yi4smBxnIX4rmEYrxt8-DmhV6PyhKHNIE4$ 



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[geospatialdeveloper]

<http://gstreamer-devel.966125.n4.nabble.com/file/t377938/Capture.png>

If the split into the 4 sub-pipes is removed and just a linear chain is
executed, I do not see an issue. The other thing I observed:
1. This issue exists only when the pipe is being run continuously. If I just
run it once then I do not see the issue.
2. The sub-pipe executing does not matter. I created conditions that the
smallest sub-pipe runs(the topmost branch) but it stalls too
3. Tried making all the sub-pipes the same size by inserting queues in the
sub-pipes.



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[gotsring]

Pipeline is low res, so can't see anything other than the general structure.
Also MAN that's a log! Best guess is line 30999, something about a message
that was passed within the pipeline and something ignored it:

0:00:05.938037328     8      0x23ca0f0 LOG                 GST_PADS
gstpad.c:5122:gst_pad_push_event_unchecked:<SDSInput:sink> sending event
0x2385ab0 (custom-upstream) to peerpad <LMSMessaging:src>
0:00:05.938041670     8      0x23ca0f0 DEBUG              GST_EVENT
gstpad.c:5401:gst_pad_send_event_unchecked:<LMSMessaging:src> have event
type custom-upstream event: 0x2385ab0, time 99:99:99.999999999, seq-num 242,
status, success=(boolean)true;
0:00:05.938101521     8      0x23ca0f0 DEBUG                basesrc
gstbasesrc.c:1982:gst_base_src_default_event:<LMSMessaging> handle event
custom-upstream event: 0x2385ab0, time 99:99:99.999999999, seq-num 242,
status, success=(boolean)true;
0:00:05.938108277     8      0x23ca0f0 DEBUG                basesrc
gstbasesrc.c:2054:gst_base_src_event:<LMSMessaging> subclass refused event
0:00:05.938110978     8      0x23ca0f0 LOG                GST_EVENT
gstevent.c:219:_gst_event_free: freeing event 0x2385ab0 type custom-upstream
0:00:05.938115693     8      0x23ca0f0 DEBUG               GST_PADS
gstpad.c:5470:gst_pad_send_event_unchecked:<LMSMessaging:src> sent event,
ret error
0:00:05.938119303     8      0x23ca0f0 LOG                 GST_PADS
gstpad.c:5130:gst_pad_push_event_unchecked:<SDSInput:sink> sent event
0x2385ab0 (custom-upstream) to peerpad <LMSMessaging:src>, ret error
0:00:05.938124588     8      0x23ca0f0 DEBUG               GST_PADS
gstpad.c:5470:gst_pad_send_event_unchecked:<SDSInput:src> sent event, ret
error
0:00:05.938127523     8      0x23ca0f0 LOG                 GST_PADS
gstpad.c:5130:gst_pad_push_event_unchecked:<coarseOffset:sink> sent event
0x2385ab0 (custom-upstream) to peerpad <SDSInput:src>, ret error

Not sure I can help past this, this looks like something you'll have to
debug in your code.
As for your other notes:
1. What do you mean run continuously vs run once? Are you normally starting
and stopping the pipeline?
3. I don't think padding with queues does anything, as long as all your tee
connects to queue elements before anything else, you should be fine.




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