[Gstreamer-bugs] Bug or newbie problem with gstreamer-0.8.0

[John Murdie]

I've recently started to experiment with gstreamer, appreciating that it
is still being developed but finding that it has an elegant and very
adaptable underlying model. (That was the flattery, now the request for
assistance!) I first installed gstreamer-0.7.3 and gst-plugins-0.7.3
from source on a Slackware Linux 9.0 system under /usr/local (which
already had gstreamer/gst-plugins-0.6.0) so I could experiment and
learn. I installed 0.7.3 because that was the latest source I could find
at the time on SourceForge. My little test programs worked fine, apart
from a problem with the afsrc plugin. I then installed 0.8.0, which
fixed the afsrc problem (which I don't think worth describing here) only
to find one of my first example programs no longer works correctly. I
thought I'd ask people here to comment before I bugzilla it - after all,
I might be in error.

I attach the .c and Makefile for my example program, in which I try out
seeking in an MP3 audio stream. I pinched most of the source from the
very useful example gst-plugins/examples/seeking/seek.c. In 0.7.3, both
this executable and the one I build from my .c work fine, but in 0.8.0
the two programs show (different?) odd behaviour. I'm wondering whether
this is a result of a genuine bug or something that has gone wrong with
my build. Can anyone confirm (and suggest a diagnosis for) my problem?

The 0.7.3 seek works fine, but the 0.8.0 seek (tried with an MP3 file -
'seek 0 song.mp3', I'm sure you can find an MP3 to try) moves its slider
rapidly to the extreme right whenever I let go of it, though the track
keeps on playing until it ends.

My program is supposed to play an MP3 file, but rewind the pipeline to
the start when it reaches halfway through the input. This works fine
with 0.7.3, but with 0.8.0 the seek has no effect, and the seek attempt
repeats indefinitely.

John A. Murdie
Department of Computer Science
University of York
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