gst_set_state ( MUX , NULL ) get's HANGED ( Porting Gst-1.0 code to Gst-0.10)

[Ashish Kumar Mishra]

Hi All ,

I am porting an already working code on Gst-1.0 to Gst-0.10.
I have completed the changes and the code starts eworks on Gst-0.10 .

The gst-0.10 code actually gets STRUCK at gst_set_state ( MUX , NULL )  ( Hence , return value is not there )
Roughly the pipeline is "videotestsrc -> clockoverlay -> timeoverlay -> queue -> avimux -> filesink "

Could team member's please let me know what are the probable cause's that can cause gst-set_state to hang and not return from the call.

I am falling short of debugging pointers to look for.

Thanks ,
Ashish Kumar Mishra  .

[Sebastian Dröge-3]

On Di, 2016-03-15 at 22:29 -0700, Ashish Kumar Mishra wrote:

> Hi All , 
>
> I am porting an already working code on Gst-1.0 to Gst-0.10. 
> I have completed the changes and the code starts eworks on Gst-0.10 .
>
> The gst-0.10 code actually gets STRUCK at *gst_set_state ( MUX , NULL
> ) * (
> Hence , return value is not there )
>
> Could team member's please let me know what are the probable cause's
> that
> can cause gst-set_state to hang and not return from the call. 
>
> I am falling short of debugging pointers to look for. 

What is your complete pipeline? What's the backtrace of all threads
when it hangs?

--
Sebastian Dröge, Centricular Ltd · http://www.centricular.com


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[Ashish Kumar Mishra]

Sorry for delay in reply ,

1) The pipeline is videotestsrc -> clockoverlay -> queue -> mux -> filesink

2) I am not getting any error or warning message on the console , it just gets struck at that point .
    If i press CTRL + C , the code terminates . I am not having any panic /segmentation fault /oops message on console.

3) To find the probable reason , i had started going through OMX default sample code.
     But I could not find any relevant pointers , hence i feel for this i should look at Gstreamer layer & not OMX.

Could team members please let me know if my approach is correct  w.r.t point (3) .

Thanks ,
Ashish Kumar Mishra

[Kyrylo Polezhaiev]

So can you run your 0.10 app in gdb, pause it when it hangs and take a look, "where" the threads are?

> On Apr 7, 2016, at 12:05, Ashish Kumar Mishra <[hidden email]> wrote:
>
> Sorry for delay in reply ,
>
> 1) The pipeline is videotestsrc -> clockoverlay -> queue -> mux -> filesink
>
> 2) I am not getting any error or warning message on the console , it just
> gets struck at that point .
>    If i press CTRL + C , the code terminates . I am not having any panic
> /segmentation fault /oops message on console.
>
> 3) To find the probable reason , i had started going through OMX default
> sample code.
>     But I could not find any relevant pointers , hence i feel for this i
> should look at Gstreamer layer & not OMX.
>
> Could team members please let me know if my approach is correct  w.r.t point
> (3) .
>
> Thanks ,
> Ashish Kumar Mishra
>
>
>
> --
> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/gst-set-state-MUX-NULL-get-s-HANGED-Porting-Gst-1-0-code-to-Gst-0-10-tp4676362p4676788.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
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[Ashish Kumar Mishra]

I would do that and report the observation

[Ashish Kumar Mishra]

Attached is the bare minimum code for the same .
By changing the #define , the same code can be tested at GST-0.10 & GST-1.0
#define VERSION 1 ----> Gstreamer 1.6   ( Works )  
#define VERSION 0 ----> Gstreamer 0.10 ( Mux hangs  )

Please le me know if by simple code view , any logical mistake .

I would share the GDB outcome shortly , as i need to check if GDB is working on our board.

Thanks
Ashish Kumar Mishra sample_code.c