Emulating behavior of gst-launch -e in gst program

Wes Miller wmiller at sdr.com
Wed Jan 30 09:04:07 PST 2013


I read several posts on this topic here and elsewhere, but none answered my
question.

Given any program that implements a gst pipeline either using
gst_parse_launch() or a fully coded pipeline. how do I capture an external
/ctrl-c/ and turn it into a graceful shutdown?

I currently have a gst_parse_launch() pipeline that works well enough to map
my mic to my speakers.  The gst_pipeline variable, /my_pipeline,/ is global
and at pipeline creation time does contain a nonzero value.  

I also have a signal catcher in place with actions to handle SIGINT and
SIGKILL.  Print statements prove that the sighandler does get called when I
/ctrl-c/ or  send the program a /kill -9/.  However, in the signal handler
/my_pipeline/ equals 0, so  I can't use 

      gst_element_send_event( my_pipeline, gst_event_new_eos() );

I copied the eos handler out of gst_launch as best I could.  It managed to
require the multiple /ctrl-c/'s, but /my_pipeline/ is still 0 by the time
the sighandler is launched.

Thanks for any help.








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