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aggregator: add _get_latency() for subclass usage

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API: gst_aggregator_get_latency

https://bugzilla.gnome.org/show_bug.cgi?id=739996
This commit is contained in:
Matthew Waters 2014-11-17 14:00:10 +11:00 committed by Tim-Philipp Müller
parent 376de6cef3
commit 4bdbb7a98f
2 changed files with 42 additions and 0 deletions
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38
libs/gst/base/gstaggregator.c
View file

@ -947,6 +947,44 @@ _latency_query (GstAggregator * self, GstPad * pad, gpointer user_data)
return TRUE;
}
/**
* gst_aggregator_get_latency:
* @self: a #GstAggregator
* @live: (out) (allow-none): whether @self is live
* @min_latency: (out) (allow-none): the configured minimum latency of @self
* @max_latency: (out) (allow-none): the configured maximum latency of @self
*
* Retreives the latency values reported by @self in response to the latency
* query.
*
* Typically only called by subclasses.
*/
void
gst_aggregator_get_latency (GstAggregator * self, gboolean * live,
GstClockTime * min_latency, GstClockTime * max_latency)
{
GstClockTime min, max;
g_return_if_fail (GST_IS_AGGREGATOR (self));
min = self->priv->latency_min;
max = self->priv->latency_max;
if (GST_CLOCK_TIME_IS_VALID (self->timeout)) {
if (GST_CLOCK_TIME_IS_VALID (min))
min += self->timeout;
if (GST_CLOCK_TIME_IS_VALID (max))
max += self->timeout;
}
if (live)
*live = self->priv->latency_live;
if (min_latency)
*min_latency = min;
if (max_latency)
*max_latency = max;
}
static gboolean
gst_aggregator_query_latency (GstAggregator * self, GstQuery * query)
{

4
libs/gst/base/gstaggregator.h
View file

@ -261,6 +261,10 @@ gboolean gst_aggregator_iterate_sinkpads (GstAggregator
GstAggregatorPadForeachFunc func,
gpointer user_data);
void gst_aggregator_get_latency (GstAggregator * self,
gboolean * live,
GstClockTime * min,
GstClockTime * max);
G_END_DECLS