[Bug 709416] gsmdec: MS GSM playback is broken

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=709416
  GStreamer | gst-plugins | 1.2.0

Tim-Philipp Müller <t.i.m> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |t.i.m at zen.co.uk
            Summary|Regression: WAVE audio, GSM |gsmdec: MS GSM playback is
                   |6.10, mono 8000 Hz playback |broken
                   |is broken                   |

--- Comment #4 from Tim-Philipp Müller <t.i.m at zen.co.uk> 2013-12-11 13:45:46 UTC ---
> I can reproduce it with GStreamer 1.2.1 from Fedora 20/rpmfusion, but not with
> the 1.2 git branch or with gist mater, so I assume this will be fixed in 1.2.2.

This was not fixed. What commit between 1.2.1 and 1.2 HEAD might have fixed it?

Please only mark bugs as FIXED if you know what fixed it or at least have a
strong suspicion that certain commits are likely to have fixed it. If you don't
know what fixed it, mark it as OBSOLETE please.

I'm guessing what happened is that in one (working) environment the libav
decoder got picked up by decodebin, while in the other (broken) one gsmdec got
picked up.

This fixes it for me:

 commit 621bf0d22e6861e5ef1b2b72f68e6ccfc2dec7ea
 Author: Tim-Philipp Müller <tim at centricular.com>
 Date:   Fri Dec 6 00:22:20 2013 +0000

    gsmdec: fix decoding of audio/ms-gsm variant

    Alternates between 33 and 32 byte frames, but must start
    with a 33 byte frame. This has been broken for ages since
    the element was ported to the audio decoder base class.

    https://bugzilla.gnome.org/show_bug.cgi?id=709416

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