[gstreamer-bugs] [Bug 539042] New: input-selector emit multiple segments with select-all=True

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-bad | Ver: HEAD CVS
           Summary: input-selector emit multiple segments with select-
                    all=True
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: tester at tester.ca
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


I'm testing switching video codecs live with farsight2, whenever a new video
codec appears, a new pad comes out of fs2 and I like it to an input-selector
with "select-all" set to True (thats then connected to an xvimagesink).

It fails because every time a new pad is connected, it also sends a NEWSEGMENT
event that input-selector forwards almost blindly and that the sink then
accumulates.

I guess that input-selector should do much more complicated magic with the
segments and combine them in a smart way and check if an update should be sent
instead of a newsegment (or maybe nothing if they match).. Maybe even in the
case of select-all, it should just retimestamp every buffer to the running time
and only send a [0,-1] segment out or something...

Here is a small demo program:

import pygst
pygst.require('0.10')
import gst,time

pipeline = gst.parse_launch ("videotestsrc is-live=1 ! input-selector
select-all=1 name=a ! xvimagesink")
pipeline.set_state(gst.STATE_PLAYING);
time.sleep(5)

vts = gst.element_factory_make("videotestsrc")
vts.set_property("pattern", 1)
pipeline.add(vts)
vts.link(pipeline.get_by_name("a"))
pipeline.set_state(gst.STATE_PLAYING);
print "added second source"

time.sleep(10)
pipeline.set_state(gst.STATE_NULL);


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