element send EOS event not returning

[Anjo John]

Hi Bernhard,
Currently i am using the filesrc element. It reads the buffers it self.
Doing some more debugging shows that the filesrc element is in PAUSE state
when the fifo is empty. Instead of going for EOS , filesrc element waits. i
believe  this is the reason filesrc not changing to READY or NULL state. I
will check your solution with appsrc element , which i will read from the
fio and push to the appsrc element.

On Tue, Mar 6, 2018 at 6:57 PM, Bernhard Graaf <bernhard.graaf at gmx.de>
wrote:

> Quit simple:
>
>
>
> Generate named pipe.
>
> Example Code from my program:
>
> --------------
>
> umask(0);
>
>   sprintf(np_name,"/home/bgraaf/wrk/bgl/bgl_np.%i", pid);
>
>   if (mkfifo (np_name, O_RDWR | 0666) < 0)
>
>   {
>
>     if ( errno == EEXIST) printf("Versuche vorhandene Named Pipe '%s' zu
> verwenden\n", np_name);
>
>     else
>
>     {
>
>       perror("mkfifo()");
>
>       syslog(LOG_ERR, "Eigene Named Pipe nicht erstellt -->
> Progammabbruch\n");
>
>       exit(EXIT_FAILURE);
>
>     }
>
>   }
>
>
>
>
>
>   fd1 = open ( np_name, O_RDONLY | O_NONBLOCK);
>
>   if ( fd1 == -1)
>
>   {
>
>     sprintf(tmp_str, "Konnte Named Pipe '%s' nicht öffnen\n", np_name);
>
>     syslog(LOG_ERR, "%s\n",tmp_str);
>
>     perror(tmp_str);
>
>     exit(EXIT_FAILURE);
>
>   }
>
>
>
> ----------------------
>
>
>
> Include a timer f.e.: g_timeout_add (500, (GSourceFunc)np, NULL);
>
>
>
> And add a function
>
> Example:
>
> int np(gpointer data)
>
> {
>
>   char tmp_str[25];
>
>
>
>
>
>   if (read ( fd1, tmp_str, 20) != 0)
>
>   {
>
>     printf("Stoppe mp (got '%s')\n",tmp_str);
>
>     gst_element_send_event (dvb_pipe, gst_event_new_eos());
>
>   }
>
>
>
>   return 1;
>
> }
>
>
>
> From another program you can write what ever into the named pipe and the
> pipeline will close.
>
> Works fine in my app.
>
>
>
> Regards
>
> Bernhard
>
>
>
>
> ------------------------------
>
> *Von:* gstreamer-devel [mailto:gstreamer-devel-
> bounces at lists.freedesktop.org] *Im Auftrag von *Anjo John
> *Gesende**t:* Dienstag, 6. März 2018 12:34
> *An:* Discussion of the development of and with GStreamer
> *Betreff:* Re: element send EOS event not returning
>
>
>
> Hi Bernhard,
>
> Would you please explain "I handle this with a named pipe". In my
> implementation , the /tmp/test is also a fifo. the filesrc element read
> from this fifo. But i am not able to send EOS even to pipeline or the
> filesrc element (call isn't returned ). I have tried ulinking and deleting
> this fifo, also tried with fdsrc instead of filesrc. All result in same
> behaviour. Would you tell me if i am doing anything wrong? the pipeline is
> stopping correctly when running in foreground. Only cause issues when run
> from other programs using system() command or making this as an application.
>
>
>
> On Tue, Mar 6, 2018 at 4:51 PM, bernhard.graaf <bernhard.graaf at gmx.de>
> wrote:
>
> I handle this with a named pipe
>
>
>
>
>
>
>
> Von meinem Samsung Galaxy Smartphone gesendet.
>
>
>
> -------- Ursprüngliche Nachricht --------
>
> Von: Anjo John <anjo.john at vvdntech.in>
>
> Datum: 06.03.18 08:13 (GMT+01:00)
>
> An: Discussion of the development of and with GStreamer <
> gstreamer-devel at lists.freedesktop.org>
>
> Betreff: element send EOS event not returning
>
>
>
> Hi All,
>
> i have a Gstreamer application to read H264 data from a fifo and
> decode+display. Problem i am facing is whenever i run the pipeline using
> gst-launch i am able to stop the pipeline with ctrl+c interrupt. But if i
> run the same pipeline using system () command from other application and
> sending kill -2 to gst-launch , pipeline is not stopping.
>
> this is my pipeline
>
> gst-launch-1.0 -e filesrc location=/tmp/test ! h264parse ! imxvpudec !
> imxg2dvideosink framebuffer=/dev/fb1
>
>
>
> i have converted this to c application and added a signal handler for
> SIGINT. in signal handler i sent the event
>
>  gst_element_send_event(pipeline, gst_event_new_eos());
>
> but the call never returns. Also tried to sent the event to filesrc
> element. It is also hanging.
>
> is there any way to stop the pipeline gracefully, any help is appreciated
>
>
>
> --
>
>
> *With Best Regards*
>
>
> *Anjo John*
>
> VVDN Technologies Pvt Ltd
>
> *Cell : *+91 9539931442 | Skype :anjojohn051
>
>
>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
>
>
>
> --
>
>
> *With Best Regards*
>
>
> *Anjo John*
>
> VVDN Technologies Pvt Ltd
>
> *Cell : *+91 9539931442 | Skype :anjojohn051
>
>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>


-- 

*With Best Regards*


*Anjo John*

VVDN Technologies Pvt Ltd

*Cell : *+91 9539931442 | Skype :anjojohn051
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