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⇤ ← Revision 3 as of 2018-08-07 04:46:10 →
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Editor: SadakazuHaino
Comment:
← Revision 4 as of 2018-08-07 04:50:32 → ⇥
Size: 1759
Editor: SadakazuHaino
Comment:
Deletions are marked like this. Additions are marked like this.
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import sys
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 * Setup your pipeline by specifying frame_cache(=cache file name) and instrument(=K1)  * Initialize your pipeline
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 * Run your pipeline  * Put your pipeline description
{{{
...
}}}

 * Run your pipeline where you need to specify gps_start_time and gps_end_time

Step 1: Use GstLAL in your python script

  • Include the following part in your python script to use GstLAL 

   1 import sys
   2 import gi
   3 gi.require_version('Gst', '1.0')
   4 from gi.repository import GObject, Gst
   5 GObject.threads_init()
   6 Gst.init(None)
   7 
   8 from gstlal import pipeparts         as pp
   9 from gstlal import calibration_parts as cp
  10 from gstlal import simplehandler
  11 from gstlal import datasource
  • Initialize your pipeline 

   1 pipeline = Gst.Pipeline(name=pname)
   2 mainloop = GObject.MainLoop()
   3 handler  = simplehandler.Handler(mainloop, pipeline)
  • Put your pipeline description 

...
  • Run your pipeline where you need to specify gps_start_time and gps_end_time 

   1 print >>sys.stderr, "seeking GPS start and stop times ..."
   2 if pipeline.set_state(Gst.State.READY) != Gst.StateChangeReturn.SUCCESS:
   3         raise RuntimeError("pipeline failed to enter READY state")
   4 datasource.pipeline_seek_for_gps(pipeline, gps_start_time, gps_end_time)
   5 
   6 print >>sys.stderr, "setting pipeline state to playing ..."
   7 if pipeline.set_state(Gst.State.PLAYING) != Gst.StateChangeReturn.SUCCESS:
   8         raise RuntimeError("pipeline failed to enter PLAYING state")
   9 else:
  10         print >>sys.stderr, "set to playing successfully"
  11 
  12 print >>sys.stderr, "running pipeline ..."
  13 
  14 mainloop.run()
  15 
  16 if pipeline.set_state(Gst.State.NULL) != Gst.StateChangeReturn.SUCCESS:
  17         raise RuntimeError("pipeline could not be set to NULL")

KAGRA/Subgroups/CAL/GstLAL/tutorials/step1 (last edited 2018-08-07 04:50:32 by SadakazuHaino)