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liveadder: Use default upstream latency querying logic

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We can rely on the standard upstream latency querying logic and then add
our own latency.
This commit is contained in:
Arun Raghavan 2015-02-27 00:01:41 +05:30
parent 75e875b022
commit 5f8f18df9b
1 changed files with 6 additions and 54 deletions
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60
gst/liveadder/liveadder.c
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@ -728,63 +728,15 @@ gst_live_adder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
/* We need to send the query upstream and add the returned latency to our
* own */
GstClockTime min_latency = 0, max_latency = G_MAXUINT64;
GValue item = { 0 };
GstIterator *iter = NULL;
gboolean done = FALSE;
iter = gst_element_iterate_sink_pads (GST_ELEMENT (adder));
res = TRUE;
while (!done) {
switch (gst_iterator_next (iter, &item)) {
case GST_ITERATOR_OK:
{
GstPad *sinkpad = GST_PAD (g_value_get_object (&item));
GstClockTime pad_min_latency, pad_max_latency;
gboolean pad_us_live;
if (gst_pad_peer_query (sinkpad, query)) {
gst_query_parse_latency (query, &pad_us_live, &pad_min_latency,
&pad_max_latency);
GST_DEBUG_OBJECT (adder, "Peer latency for pad %s: min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_PAD_NAME (sinkpad),
GST_TIME_ARGS (pad_min_latency),
GST_TIME_ARGS (pad_max_latency));
if (pad_us_live) {
min_latency = MAX (pad_min_latency, min_latency);
max_latency = MIN (pad_max_latency, max_latency);
}
} else {
GST_LOG_OBJECT (adder, "latency query failed");
res = FALSE;
}
}
break;
case GST_ITERATOR_RESYNC:
res = TRUE;
min_latency = 0;
max_latency = G_MAXUINT64;
gst_iterator_resync (iter);
break;
case GST_ITERATOR_ERROR:
GST_ERROR_OBJECT (adder, "Error looping sink pads");
res = FALSE;
done = TRUE;
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
gst_iterator_free (iter);
res = gst_pad_query_default (pad, parent, query);
if (res) {
GstClockTime my_latency = adder->latency_ms * GST_MSECOND;
GstClockTime min_latency, max_latency;
gboolean live;
gst_query_parse_latency (query, &live, &min_latency, &max_latency);
GST_OBJECT_LOCK (adder);
adder->peer_latency = min_latency;
min_latency += my_latency;