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tagdemux: also read tags if downstream activates us in pull mode right away

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Fix reading of tags for the case filsrc ! footagdemux ! fooparse ! ..
where we would not read the tags because we never start our own
streaming thread.

https://bugzilla.gnome.org/show_bug.cgi?id=673185
This commit is contained in:
Tim-Philipp Müller 2012-09-11 20:53:16 +01:00
parent 899a809330
commit ec27f4e13c
1 changed files with 28 additions and 3 deletions
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31
gst-libs/gst/tag/gsttagdemux.c
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@ -1153,14 +1153,17 @@ gst_tag_demux_element_find (GstTagDemux * demux)
demux->priv->strip_start + demux->priv->strip_end)
goto no_data;
/* 2 - Do typefinding on data */
/* 2 - Do typefinding on data, but not if downstream is in charge */
if (GST_PAD_MODE (demux->priv->srcpad) == GST_PAD_MODE_PULL)
goto skip_typefinding;
caps = gst_type_find_helper_get_range (GST_OBJECT (demux), NULL,
(GstTypeFindHelperGetRangeFunction) gst_tag_demux_read_range,
demux->priv->upstream_size
- (demux->priv->strip_start + demux->priv->strip_end), NULL,
&probability);
GST_DEBUG_OBJECT (demux, "Found type %" GST_PTR_FORMAT " with a "
GST_INFO_OBJECT (demux, "Found type %" GST_PTR_FORMAT " with a "
"probability of %u", caps, probability);
/* 3 - If we didn't find the caps, fail */
@ -1175,6 +1178,11 @@ gst_tag_demux_element_find (GstTagDemux * demux)
gst_tag_demux_set_src_caps (demux, caps);
gst_caps_unref (caps);
skip_typefinding:
/* set it again, in case we skipped typefinding */
demux->priv->state = GST_TAG_DEMUX_STREAMING;
return ret;
/* ERRORS */
@ -1321,6 +1329,10 @@ gst_tag_demux_sink_activate_mode (GstPad * pad, GstObject * parent,
res = TRUE;
break;
}
if (active)
GST_TAG_DEMUX (parent)->priv->state = GST_TAG_DEMUX_READ_START_TAG;
return res;
}
@ -1364,7 +1376,6 @@ activate_push:
{
GST_DEBUG_OBJECT (demux, "No pull mode. Changing to push, but won't be "
"able to read end tags");
demux->priv->state = GST_TAG_DEMUX_READ_START_TAG;
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
}
}
@ -1489,6 +1500,7 @@ gst_tag_demux_pad_query (GstPad * pad, GstObject * parent, GstQuery * query)
gint64 result;
gboolean res = TRUE;
/* FIXME: locking ? */
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_SCHEDULING:
res = gst_pad_peer_query (demux->priv->sinkpad, query);
@ -1512,7 +1524,20 @@ gst_tag_demux_pad_query (GstPad * pad, GstObject * parent, GstQuery * query)
gst_query_parse_duration (query, &format, &result);
if (format == GST_FORMAT_BYTES) {
/* if downstream activated us in pull mode right away, e.g. in case of
* filesrc ! id3demux ! xyzparse ! .., read tags here, since we don't
* have a streaming thread of our own to do that. We do it here and
* not in get_range(), so we can return the right size in bytes.. */
if (demux->priv->state == GST_TAG_DEMUX_READ_START_TAG &&
GST_PAD_MODE (demux->priv->srcpad) == GST_PAD_MODE_PULL) {
GstFlowReturn flow G_GNUC_UNUSED;
flow = gst_tag_demux_element_find (demux);
GST_INFO_OBJECT (demux, "pulled tags: %s", gst_flow_get_name (flow));
}
result -= demux->priv->strip_start + demux->priv->strip_end;
if (result < 0)
result = 0;
gst_query_set_duration (query, format, result);
}
break;