[gstreamer-bugs] [Bug 584465] New: basetransform does unneded pad_allocs

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gstreamer (core) | Ver: git
           Summary: basetransform does unneded pad_allocs
           Product: GStreamer
           Version: git
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: ensonic at sonicpulse.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


With this commit
http://cgit.freedesktop.org/gstreamer/gstreamer/commit/?id=30f8603645d1d68c7d0df6b35deb45abaad37f06

basetransform started to do a pad_alloc for elements that don't have a
prepare_buffer function. In many circumstances the newly allocated buffer is
discarded. This works quite suboptimal. If I play a tiny 8sec song in buzztard

GST_DEBUG="basetransform*:4" GST_DEBUG_NO_COLOR=1 ~/buzztard/bin/buzztard-edit
2>debug.log --command=load
--input-file=/home/ensonic/buzztard/share/buzztard/songs/303-v2.bzt

and then grep for the code that discards buffers, I get this:
grep "discard buffer" debug.log | wc -l
2157

patch follows.


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