[Bug 721655] New: basesrc activation order logs error in some cases where it should not

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=721655
  GStreamer | gstreamer (core) | 1.x

           Summary: basesrc activation order logs error in some cases
                    where it should not
    Classification: Platform
           Product: GStreamer
           Version: 1.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: ensonic at sonicpulse.de
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


gst-launch-1.0 fakesrc can-activate-pull=false num-buffers=0 ! fakesink
can-activate-pull=true

This is a followup for the discussion after I submitted
commit 74adc33982e08dd3bf1c1a991f8519dd821df549
Author: Stefan Sauer <ensonic at users.sf.net>
Date:   Mon Jan 6 21:04:32 2014 +0100

basesrc: demote error to warning

This is not an error. A subclass returning FALSE for is_seekable() is one way
of
saying that we can't operate in pull mode.


Here is a better patch. Main question is wheter we should end up calling
start() before the pad is activated(). Previously I tried to make
gst_base_src_activate_pull() fail if !gst_base_src_seekable(), but that code is
not yet called at that moment.

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