matroska-demux: Send pending tags when adding a new pad

We might've parsed those tags before already and tried to push them to
non-existing pads before. Now let's do it for real.

1 files changed, 23 insertions, 0 deletions

diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c
index 0e49115c2..2cbc952e7 100644
--- a/gst/matroska/matroska-demux.c
+++ b/gst/matroska/matroska-demux.c
@@ -1240,6 +1240,29 @@ gst_matroska_demux_add_stream (GstMatroskaDemux * demux, GstEbmlRead * ebml)
   gst_pad_push_event (context->pad, stream_start);
   gst_pad_set_caps (context->pad, context->caps);
 
+
+  if (demux->common.global_tags) {
+    GstEvent *tag_event;
+
+    gst_tag_list_add (demux->common.global_tags, GST_TAG_MERGE_REPLACE,
+        GST_TAG_CONTAINER_FORMAT, "Matroska", NULL);
+    GST_DEBUG_OBJECT (context->pad, "Sending global_tags %p: %" GST_PTR_FORMAT,
+        demux->common.global_tags, demux->common.global_tags);
+
+    tag_event =
+        gst_event_new_tag (gst_tag_list_copy (demux->common.global_tags));
+
+    gst_pad_push_event (context->pad, tag_event);
+  }
+
+  if (G_UNLIKELY (context->tags_changed)) {
+    GST_DEBUG_OBJECT (context->pad, "Sending tags %p: %"
+        GST_PTR_FORMAT, context->tags, context->tags);
+    gst_pad_push_event (context->pad,
+        gst_event_new_tag (gst_tag_list_copy (context->tags)));
+    context->tags_changed = FALSE;
+  }
+
   gst_element_add_pad (GST_ELEMENT (demux), context->pad);
   gst_flow_combiner_add_pad (demux->flowcombiner, context->pad);