[gstreamer-bugs] [Bug 503308] New: Changing tempo using pitch plugin doesn't update length info

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-bad | Ver: 0.10.13
           Summary: Changing tempo using pitch plugin doesn't update length
                    info
           Product: GStreamer
           Version: 0.10.13
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: richip at richip.dhs.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.17/2.18
   GNOME milestone: Unspecified


Please describe the problem:
when I play audio using the gstreamer pitch plugin to change the tempo,
gstreamer mistakenly assumes the length of the audio source is still the same.
So if tempo is slowed down, the song ends playing prematurely.

This might also affect arbitrary repositioning, as well. I notice that when I
play audio files with the pitch plugin enabled, the audio app (exaile) cannot
do an arbitrary repositioning of playback pointer. If it's unrelated, I can
create another bug report.

Steps to reproduce:
1. Do a:

$ gst-launch uridecodebin uri=file://`pwd`/"${fname}" ! pitch tempo=0.8 !
audioconvert ! alsasink

(use any tempo < 1)

2. The audio playback should get terminated prematurely


Actual results:


Expected results:


Does this happen every time?


Other information:
gstreamer = 0.10.13
gstreamer-plugins-bad = 0.10.5
soundtouch = 1.3.1


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