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playsink: re-use iterator callback to avoid code duplication

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This commit is contained in:
Tim-Philipp Müller 2010-01-18 10:07:30 +00:00
parent 7216605ffa
commit b0fe1867d4
1 changed files with 33 additions and 44 deletions
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77
gst/playback/gstplaysink.c
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@ -749,44 +749,6 @@ activate_chain (GstPlayChain * chain, gboolean activate)
return TRUE;
}
static gint
find_property (GstElement * element, const gchar * name)
{
gint res;
if (g_object_class_find_property (G_OBJECT_GET_CLASS (element), name)) {
res = 0;
GST_DEBUG_OBJECT (element, "found %s property", name);
} else {
GST_DEBUG_OBJECT (element, "did not find %s property", name);
res = 1;
gst_object_unref (element);
}
return res;
}
/* find an object in the hierarchy with a property named @name */
static GstElement *
gst_play_sink_find_property (GstPlaySink * playsink, GstElement * obj,
const gchar * name)
{
GstElement *result = NULL;
GstIterator *it;
if (GST_IS_BIN (obj)) {
it = gst_bin_iterate_recurse (GST_BIN_CAST (obj));
result = gst_iterator_find_custom (it,
(GCompareFunc) find_property, (gpointer) name);
gst_iterator_free (it);
} else {
if (g_object_class_find_property (G_OBJECT_GET_CLASS (obj), name)) {
result = obj;
gst_object_ref (obj);
}
}
return result;
}
static gboolean
element_is_sink (GstElement * element)
{
@ -830,12 +792,13 @@ typedef struct
{
const gchar *prop_name;
GType prop_type;
gboolean need_sink;
} FindPropertyHelper;
static gint
find_property_sink (GstElement * element, FindPropertyHelper * helper)
find_property (GstElement * element, FindPropertyHelper * helper)
{
if (!element_is_sink (element)) {
if (helper->need_sink && !element_is_sink (element)) {
gst_object_unref (element);
return 1;
}
@ -845,10 +808,12 @@ find_property_sink (GstElement * element, FindPropertyHelper * helper)
return 1;
}
GST_INFO_OBJECT (element, "found sink with %s property", helper->prop_name);
GST_INFO_OBJECT (element, "found %s with %s property", helper->prop_name,
(helper->need_sink) ? "sink" : "element");
return 0; /* keep it */
}
/* FIXME: why not move these functions into core? */
/* find a sink in the hierarchy with a property named @name. This function does
* not increase the refcount of the returned object and thus remains valid as
* long as the bin is valid. */
@ -862,11 +827,11 @@ gst_play_sink_find_property_sinks (GstPlaySink * playsink, GstElement * obj,
if (element_has_property (obj, name, expected_type)) {
result = obj;
} else if (GST_IS_BIN (obj)) {
FindPropertyHelper helper = { name, expected_type };
FindPropertyHelper helper = { name, expected_type, TRUE };
it = gst_bin_iterate_recurse (GST_BIN_CAST (obj));
result = gst_iterator_find_custom (it,
(GCompareFunc) find_property_sink, &helper);
(GCompareFunc) find_property, &helper);
gst_iterator_free (it);
/* we don't need the extra ref */
if (result)
@ -875,6 +840,30 @@ gst_play_sink_find_property_sinks (GstPlaySink * playsink, GstElement * obj,
return result;
}
/* find an object in the hierarchy with a property named @name */
static GstElement *
gst_play_sink_find_property (GstPlaySink * playsink, GstElement * obj,
const gchar * name, GType expected_type)
{
GstElement *result = NULL;
GstIterator *it;
if (GST_IS_BIN (obj)) {
FindPropertyHelper helper = { name, expected_type, FALSE };
it = gst_bin_iterate_recurse (GST_BIN_CAST (obj));
result = gst_iterator_find_custom (it,
(GCompareFunc) find_property, &helper);
gst_iterator_free (it);
} else {
if (element_has_property (obj, name, expected_type)) {
result = obj;
gst_object_ref (obj);
}
}
return result;
}
static void
do_async_start (GstPlaySink * playsink)
{
@ -2155,7 +2144,7 @@ gst_play_sink_get_last_frame (GstPlaySink * playsink)
/* find and get the last-buffer property now */
if ((elem =
gst_play_sink_find_property (playsink, chain->sink,
"last-buffer"))) {
"last-buffer", GST_TYPE_BUFFER))) {
GST_DEBUG_OBJECT (playsink, "getting last-buffer property");
g_object_get (elem, "last-buffer", &result, NULL);
gst_object_unref (elem);