[Bug 737127] interleave: interleaving does not respect the channel positions default order

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Thu Oct 2 00:22:27 PDT 2014


https://bugzilla.gnome.org/show_bug.cgi?id=737127
  GStreamer | gst-plugins-good | git

Sebastian Dröge (slomo) <slomo> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|HEAD                        |1.5.1

--- Comment #4 from Sebastian Dröge (slomo) <slomo at coaxion.net> 2014-10-02 07:22:15 UTC ---
Thanks for the patch :)

commit 7ae7f657fae542f06ba4c22d65a2084f5a4a3a5d
Author: Antonio Ospite <ao2 at ao2.it>
Date:   Tue Sep 23 10:48:09 2014 +0200

    interleave: interleave samples following the Default Channel Ordering

    In order to have a full mapping between channel positions in the audio
    stream and loudspeaker positions, the channel-mask alone is not enough:
    the channels must be interleaved following some Default Channel Ordering
    as mentioned in the WAVEFORMATEXTENSIBLE[1] specification.

    As a Default Channel Ordering use the one implied by
    GstAudioChannelPosition which follows the ordering defined in SMPTE
    2036-2-2008[2].

    NOTE that the relative order in the Top Layer is not exactly the same as
    the one from the WAVEFORMATEXTENSIBLE[1] specification; let's hope users
    using so may channels are already aware of such discrepancies.

    [1]
http://msdn.microsoft.com/en-us/library/windows/hardware/dn653308%28v=vs.85%29.aspx
    [2] http://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BS.2159-2-2011-PDF-E.pdf

    Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=737127

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