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GESTrackEffect: add the get_props_hastable virtual method

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Implements this virtual method for bin described effects.
This commit is contained in:
Thibault Saunier 2011-02-08 08:57:11 +01:00 committed by Edward Hervey
parent c67bcb1684
commit 5376ff21ce
1 changed files with 93 additions and 0 deletions
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93
ges/ges-track-effect.c
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@ -33,6 +33,10 @@ G_DEFINE_TYPE (GESTrackEffect, ges_track_effect, GES_TYPE_TRACK_OPERATION);
static void ges_track_effect_dispose (GObject * object);
static void ges_track_effect_finalize (GObject * object);
static GstElement *ges_track_effect_create_element (GESTrackObject * self);
static GHashTable *ges_track_effect_get_props_hashtable (GESTrackObject * self);
static GHashTable
* ges_track_effect_get_props_hashtable_from_bin_desc (GESTrackObject *
self);
struct _GESTrackEffectPrivate
{
@ -87,6 +91,7 @@ ges_track_effect_class_init (GESTrackEffectClass * klass)
object_class->finalize = ges_track_effect_finalize;
obj_bg_class->create_element = ges_track_effect_create_element;
obj_bg_class->get_props_hastable = ges_track_effect_get_props_hashtable;
/**
* GESTrackEffect:bin_description:
@ -127,6 +132,94 @@ ges_track_effect_finalize (GObject * object)
G_OBJECT_CLASS (ges_track_effect_parent_class)->finalize (object);
}
/* This function is more for testing puposes */
static GHashTable *
ges_track_effect_get_props_hashtable_from_bin_desc (GESTrackObject * self)
{
gpointer data;
GstIterator *it;
GParamSpec **parray;
GObjectClass *class;
guint i, nb_specs;
const gchar *name, *klass;
GstElementFactory *factory;
GstElement *child, *element;
gchar **categories, *categorie;
gboolean done = FALSE;
GHashTable *ret = NULL;
element = ges_track_object_get_element (self);
ret = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
/* We go over child elements recursivly, and add writable properties to the
* hashtable
* FIXME: Add a blacklist of properties */
it = gst_bin_iterate_recurse (GST_BIN (element));
while (!done) {
switch (gst_iterator_next (it, &data)) {
case GST_ITERATOR_OK:
child = GST_ELEMENT_CAST (data);
factory = gst_element_get_factory (child);
klass = gst_element_factory_get_klass (factory);
categories = g_strsplit (klass, "/", 0);
i = 0;
for (categorie = categories[0]; categorie;) {
if (g_strcmp0 (categorie, "Effect") == 0) {
class = G_OBJECT_GET_CLASS (child);
parray = g_object_class_list_properties (class, &nb_specs);
for (i = 0; i < nb_specs; i++) {
if (parray[i]->flags & G_PARAM_WRITABLE) {
name = g_param_spec_get_name (parray[i]);
g_hash_table_insert (ret,
g_strconcat (G_OBJECT_CLASS_NAME (class),
"-", name, NULL), g_object_ref (child));
}
}
GST_DEBUG ("%i configurable properties added to %p", child,
nb_specs);
gst_object_unref (child);
break;
}
i++;
categorie = categories[i];
}
g_strfreev (categories);
break;
case GST_ITERATOR_RESYNC:
GST_DEBUG ("iterator resync");
gst_iterator_resync (it);
break;
case GST_ITERATOR_DONE:
GST_DEBUG ("iterator done");
done = TRUE;
break;
default:
break;
}
}
gst_iterator_free (it);
return ret;
}
/* Virtual methods */
static GHashTable *
ges_track_effect_get_props_hashtable (GESTrackObject * self)
{
if (GES_TRACK_EFFECT (self)->priv->bin_description)
return ges_track_effect_get_props_hashtable_from_bin_desc (self);
return NULL;
}
static GstElement *
ges_track_effect_create_element (GESTrackObject * object)
{