static gboolean
element_filter (GstPluginFeature * feature, FilterData * data)
{
gboolean res;
/* we only care about element factories */
if (G_UNLIKELY (!GST_IS_ELEMENT_FACTORY (feature)))
return FALSE;
res = (gst_plugin_feature_get_rank (feature) >= data->minrank) &&
gst_element_factory_list_is_type (GST_ELEMENT_FACTORY_CAST (feature),
data->type);
return res;
}
static GstAutoplugSelectResult
on_autoplug_select (GstElement * uridecodebin, GstPad * pad, GstCaps * caps,
GstElementFactory * factory, GstElement * pipeline)
{
/* if decodebin is about to plug a decoder,
* stop it right there and expose the pad;
* the slave's decodebin will take it from there... */
if (gst_element_factory_list_is_type (factory,
GST_ELEMENT_FACTORY_TYPE_DECODER)) {
gchar *capsstr = gst_caps_to_string (caps);
g_print (" exposing to slave: %s\n", capsstr);
g_free (capsstr);
return GST_AUTOPLUG_SELECT_EXPOSE;
}
return GST_AUTOPLUG_SELECT_TRY;
}
gboolean sink_factory_filter(GstPluginFeature* feature, gpointer data) {
GstCaps* caps = (GstCaps*)data;
if (!GST_IS_ELEMENT_FACTORY(feature)) return FALSE;
const GList* static_pads =
gst_element_factory_get_static_pad_templates(GST_ELEMENT_FACTORY(feature));
int not_any_number = 0;
for (GList* item = (GList*)static_pads; item; item = item->next) {
GstStaticPadTemplate* padTemplate = (GstStaticPadTemplate*)item->data;
GstPadTemplate* pad = gst_static_pad_template_get(padTemplate);
GstCaps* padCaps = gst_pad_template_get_caps(pad);
if (!gst_caps_is_any(padCaps)) not_any_number++;
}
if (not_any_number == 0) return FALSE;
if (!gst_element_factory_list_is_type(GST_ELEMENT_FACTORY(feature),
GST_ELEMENT_FACTORY_TYPE_DECODABLE))
return FALSE;
if (!gst_element_factory_can_sink_all_caps(GST_ELEMENT_FACTORY(feature), caps)) return FALSE;
return TRUE;
}
