{
GstAudioTestSrc *src = GST_AUDIO_TEST_SRC (bsrc);
GstStructure *structure;
+ gint channels;
caps = gst_caps_make_writable (caps);
/* fixate to mono unless downstream requires stereo, for backwards compat */
gst_structure_fixate_field_nearest_int (structure, "channels", 1);
+ if (gst_structure_get_int (structure, "channels", &channels) && channels > 2) {
+ if (!gst_structure_has_field_typed (structure, "channel-mask",
+ GST_TYPE_BITMASK))
+ gst_structure_set (structure, "channel-mask", GST_TYPE_BITMASK, 0ULL,
+ NULL);
+ }
+
caps = GST_BASE_SRC_CLASS (parent_class)->fixate (bsrc, caps);
return caps;