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bin: cache index

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Cache the last index that was set with _set_index() and return this in the
_get_index() call.
Set the cached index on newly added elements.

Fixes #566881
This commit is contained in:
Wim Taymans 2009-08-28 18:37:44 +02:00
parent a3f9908266
commit d4012be469
1 changed files with 49 additions and 0 deletions
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49
gst/gstbin.c
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@ -202,6 +202,9 @@ struct _GstBinPrivate
gboolean pending_async_done;
guint32 structure_cookie;
/* cached index */
GstIndex *index;
};
typedef struct
@ -231,6 +234,8 @@ static gboolean gst_bin_add_func (GstBin * bin, GstElement * element);
static gboolean gst_bin_remove_func (GstBin * bin, GstElement * element);
static void gst_bin_set_index_func (GstElement * element, GstIndex * index);
static GstIndex *gst_bin_get_index_func (GstElement * element);
static GstClock *gst_bin_provide_clock_func (GstElement * element);
static gboolean gst_bin_set_clock_func (GstElement * element, GstClock * clock);
@ -459,6 +464,7 @@ gst_bin_class_init (GstBinClass * klass)
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_bin_change_state_func);
gstelement_class->get_state = GST_DEBUG_FUNCPTR (gst_bin_get_state_func);
gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_bin_get_index_func);
gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_bin_set_index_func);
gstelement_class->provide_clock =
GST_DEBUG_FUNCPTR (gst_bin_provide_clock_func);
@ -513,6 +519,7 @@ gst_bin_dispose (GObject * object)
GstBus **child_bus_p = &bin->child_bus;
GstClock **provided_clock_p = &bin->provided_clock;
GstElement **clock_provider_p = &bin->clock_provider;
GstIndex **index_p = &bin->priv->index;
GST_CAT_DEBUG_OBJECT (GST_CAT_REFCOUNTING, object, "dispose");
@ -520,6 +527,7 @@ gst_bin_dispose (GObject * object)
gst_object_replace ((GstObject **) child_bus_p, NULL);
gst_object_replace ((GstObject **) provided_clock_p, NULL);
gst_object_replace ((GstObject **) clock_provider_p, NULL);
gst_object_replace ((GstObject **) index_p, NULL);
bin_remove_messages (bin, NULL, GST_MESSAGE_ANY);
GST_OBJECT_UNLOCK (object);
@ -588,6 +596,23 @@ gst_bin_get_property (GObject * object, guint prop_id,
}
}
/* return the cached index */
static GstIndex *
gst_bin_get_index_func (GstElement * element)
{
GstBin *bin;
GstIndex *result;
bin = GST_BIN (element);
GST_OBJECT_LOCK (bin);
if ((result = bin->priv->index))
gst_object_ref (result);
GST_OBJECT_UNLOCK (bin);
return result;
}
/* set the index on all elements in this bin
*
* MT safe
@ -598,11 +623,25 @@ gst_bin_set_index_func (GstElement * element, GstIndex * index)
GstBin *bin;
gboolean done;
GstIterator *it;
GstIndex *old;
bin = GST_BIN (element);
GST_OBJECT_LOCK (bin);
old = bin->priv->index;
if (G_UNLIKELY (old == index))
goto was_set;
if (index)
gst_object_ref (index);
bin->priv->index = index;
GST_OBJECT_UNLOCK (bin);
if (old)
gst_object_unref (old);
it = gst_bin_iterate_elements (bin);
/* set the index on all elements in the bin */
done = FALSE;
while (!done) {
gpointer data;
@ -630,6 +669,14 @@ gst_bin_set_index_func (GstElement * element, GstIndex * index)
}
}
gst_iterator_free (it);
return;
was_set:
{
GST_DEBUG_OBJECT (bin, "index was already set");
GST_OBJECT_UNLOCK (bin);
return;
}
}
/* set the clock on all elements in this bin
@ -995,6 +1042,8 @@ gst_bin_add_func (GstBin * bin, GstElement * element)
* that is not important right now. When the pipeline goes to PLAYING,
* a new clock will be selected */
gst_element_set_clock (element, GST_ELEMENT_CLOCK (bin));
/* set the cached index on the children */
gst_element_set_index (element, bin->priv->index);
ret = GST_STATE_RETURN (bin);
/* no need to update the state if we are in error */