[Bug 705986] New: audioconvert/audioresample: Add support for non-interleaved audio formats

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Wed Aug 14 05:25:40 PDT 2013


https://bugzilla.gnome.org/show_bug.cgi?id=705986
  GStreamer | gst-plugins-base | git

           Summary: audioconvert/audioresample: Add support for
                    non-interleaved audio formats
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: NEW
          Keywords: perf
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: slomo at circular-chaos.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
                CC: t.i.m at zen.co.uk, wim.taymans at gmail.com
            Blocks: 705977
     GNOME version: ---


+++ This bug was initially created as a clone of Bug #705977 +++

With the upgrade of libav, support for S16 and planar conversions were removed
internally and gst-libav now receives the raw planar F32 samples.

For AAC, gst-libav converts the planar F32 samples to interleaved and then
audioconvert converts the F32 samples to S16. This is a lot less efficient than
the tight single conversion loop that was previously used.

We should:

 - let the audio decoder render planar samples directly into the output buffer
 - make gst-libav output planar formats
 - add support for planar formats in audioconvert and possibly other elements
   that could be used in a typical playbin pipeline

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