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basesink: drain on allocation query

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Allows buffers to be reclaimed when caps is to be renegotiated so
that bufferpools can be stopped. As the allocation query is
serialized all buffers have been already drained from the pipeline,
except this last_sample one.

https://bugzilla.gnome.org/show_bug.cgi?id=682770
This commit is contained in:
Thiago Santos 2015-03-13 18:53:11 +00:00
parent 901fea5985
commit 5e15d4aa60
1 changed files with 14 additions and 8 deletions
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22
libs/gst/base/gstbasesink.c
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@ -4805,6 +4805,18 @@ default_element_query (GstElement * element, GstQuery * query)
return res;
}
static void
gst_base_sink_drain (GstBaseSink * basesink)
{
GstBuffer *old;
GST_OBJECT_LOCK (basesink);
if ((old = basesink->priv->last_buffer))
basesink->priv->last_buffer = gst_buffer_copy_deep (old);
GST_OBJECT_UNLOCK (basesink);
if (old)
gst_buffer_unref (old);
}
static gboolean
gst_base_sink_default_query (GstBaseSink * basesink, GstQuery * query)
@ -4817,6 +4829,7 @@ gst_base_sink_default_query (GstBaseSink * basesink, GstQuery * query)
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ALLOCATION:
{
gst_base_sink_drain (basesink);
if (bclass->propose_allocation)
res = bclass->propose_allocation (basesink, query);
else
@ -4853,14 +4866,7 @@ gst_base_sink_default_query (GstBaseSink * basesink, GstQuery * query)
}
case GST_QUERY_DRAIN:
{
GstBuffer *old;
GST_OBJECT_LOCK (basesink);
if ((old = basesink->priv->last_buffer))
basesink->priv->last_buffer = gst_buffer_copy_deep (old);
GST_OBJECT_UNLOCK (basesink);
if (old)
gst_buffer_unref (old);
gst_base_sink_drain (basesink);
res = TRUE;
break;
}