[Bug 733866] New: interleave: caps negotiation fails when input caps have non-interleaved layout

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=733866
  GStreamer | gst-plugins-good | git

           Summary: interleave: caps negotiation fails when input caps
                    have non-interleaved layout
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: phil at base-art.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


This fails:

gst-launch-1.0 interleave name=i ! audioconvert ! pulsesink  audiotestsrc  !
audioconvert ! "audio/x-raw, format=(string)F32LE,
layout=(string)non-interleaved, rate=(int)44100, channels=(int)1,
channel-mask=(bitmask)0x0000000000000001" ! queue ! i.sink_0   audiotestsrc !
audioconvert ! "audio/x-raw, format=(string)F32LE,
layout=(string)non-interleaved, rate=(int)44100, channels=(int)1,
channel-mask=(bitmask)0x0000000000000002" ! queue ! i.sink_1

but changing input layout to interleaved on the capsfilters make it work. This
is because gst_interleave_sink_setcaps() doesn't properly set the layout field
of the caps, it reuses the layout of the caps event. I think the layout should
be unconditionally set to interleaved there :)

I'll try to provide a unit-test along with the patch.

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