try to show the sound process pid on session info

git-svn-id: https://xpra.org/svn/Xpra/trunk@8787 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/client/gtk_base/session_info.py

@@ -624,6 +624,12 @@ def pipeline_info(can_use, sound_pipeline):
             if state!="active":
                 return state
             s = "%s: %s" % (state, sound_pipeline.codec_description)
+            try:
+                pid = sound_pipeline.get_info().get("pid")
+                if pid:
+                    s += " (pid=%s)" % pid
+            except:
+                pass
             #if sound_pipeline.bitrate>0:
             #    s += " / %sbit/s" % std_unit(sound_pipeline.bitrate)
             return s

src/xpra/sound/sound_pipeline.py

@@ -3,6 +3,7 @@
 # Xpra is released under the terms of the GNU GPL v2, or, at your option, any
 # later version. See the file COPYING for details.
 
+import os
 import time
 
 from xpra.sound.gstreamer_util import gst
@@ -49,6 +50,7 @@ def get_info(self):
                 "bytes"             : self.byte_count,
                 "pipeline"          : self.pipeline_str,
                 "volume"            : self.get_volume(),
+                "pid"               : os.getpid(),
                 }
         if self.codec_mode:
             info["codec_mode"] = self.codec_mode