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      <base href="https://bugzilla.gnome.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - interleave: assertion 'self->func != NULL' failed"
   href="https://bugzilla.gnome.org/show_bug.cgi?id=744211">744211</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>interleave: assertion 'self->func != NULL' failed
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Platform
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>GStreamer
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>gst-plugins-good
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>gstreamer-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>vineeth.tm@samsung.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>gstreamer-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>GNOME version</th>
          <td>---
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When we try to launch with the below pipeline
gst-launch-1.0 audiotestsrc num-buffers=20 ! interleave
channel-positions-from-input=False ! audioconvert ! autoaudiosink

the following error occurs
** (gst-launch-1.0:31758): CRITICAL **: gst_interleave_collected: assertion
'self->func != NULL' failed

This happens because 

      if (g_atomic_int_get (&self->configured_sinkpads_counter) ==
          self->channels) {
        ret = gst_interleave_sink_setcaps (self, data->pad, caps, &info);
...
}

self->func will be defined only when self->channels is equal to
sinkpads_counter

but 

  if (self->channel_positions_from_input)
    channels = g_atomic_int_add (&self->channels, 1);

self->channels will be set only in the case of channel_positions_from_input
being TRUE. Hence the error.

Not exactly sure how to fix this. Can someone check this.</pre>
        </div>
      </p>
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