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Catching signal interrupt on gst-launch

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John Tobias

Catching signal interrupt on gst-launch

Hi Guys,

I have a problem running this command: gst-launch v4l2src ! tih264 ! fakesink

The gst-launch did not catch the signal interrupt when I hit the ctrl+c. The pipeline exited immediately instead of going through the _change_state transition of the pipeline.

Then, I tried the gst-launch v4l2src ! fakesink, it works correctly.

Setting pipeline to PAUSED ...

Pipeline is live and does not need PREROLL ...

Setting pipeline to PLAYING ...

New clock: GstSystemClock

<-- gst-launch detected the interrupt here..->

Caught interrupt -- handling interrupt.

Interrupt: Stopping pipeline ...

Execution ended after 1710703481 ns.

Setting pipeline to PAUSED ...

Setting pipeline to READY ...

clean stopped pipeline<6>

Starting of vpfe_release...<6>

doing full release, started is 0

Setting pipeline to NULL ...

Freeing pipeline ...

I don't understand why the gst-launch giving me two different behavior with regards to the signal handling.

Can anyone tell me why I am getting different behavior?

Thanks,

John

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Sudarshan Bisht

Re: Catching signal interrupt on gst-launch

Hi ,

Are you sure that you have correctly implemented and registered
_change_state function in "tih264" element ? Because that is the only
element introduced in first pipeline besides standard gstreamer
elements .

On Tue, Apr 20, 2010 at 6:20 AM, John Tobias <[hidden email]> wrote:

> Hi Guys,
> I have a problem running this command: gst-launch v4l2src ! tih264 !
> fakesink
> The gst-launch did not catch the signal interrupt when I hit the ctrl+c. The
> pipeline exited immediately instead of going through the _change_state
> transition of the pipeline.
> Then, I tried the gst-launch v4l2src ! fakesink, it works correctly.
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> <-- gst-launch detected the interrupt here..->
> Caught interrupt -- handling interrupt.
> Interrupt: Stopping pipeline ...
> Execution ended after 1710703481 ns.
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> clean stopped pipeline<6>
> Starting of vpfe_release...<6>
> doing full release, started is 0
> Setting pipeline to NULL ...
> Freeing pipeline ...
> I don't understand why the gst-launch giving me two different behavior with
> regards to the signal handling.
> Can anyone tell me why I am getting different behavior?
> Thanks,
> John
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>

--
Regards,

Sudarshan Bisht

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Try the new software tools for yourself. Speed compiling, find bugs
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See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
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John Tobias-2

Re: Catching signal interrupt on gst-launch

In reply to this post by John Tobias

Hi,

The pipeline works OK on my old OS. But, after using newer version seems I have forgot something to include in my library and I am still looking at it. Though, I have no clue at this moment.

john