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smart-mixer: Add support for d3d11compositor and glvideomixer

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Some hardware compositor elements (d3d11compositor and glvideomixer)
consist of wrapper bin with internal mixer element.
So, we need special handling for such elements.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/242>
This commit is contained in:
Seungha Yang 2021-04-23 16:08:48 +09:00
parent eaaaf78090
commit bf5741f424
2 changed files with 55 additions and 6 deletions
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15
ges/ges-smart-video-mixer.c
View file

@ -402,16 +402,25 @@ ges_smart_mixer_constructed (GObject * obj)
{
GstPad *pad;
GstElement *identity, *videoconvert;
GESSmartMixer *self = GES_SMART_MIXER (obj);
gchar *cname = g_strdup_printf ("%s-compositor", GST_OBJECT_NAME (self));
GstElement *mixer;
self->mixer =
gst_element_factory_create (ges_get_compositor_factory (), cname);
g_free (cname);
g_object_set (self->mixer, "background", 1, "emit-signals", TRUE, NULL);
g_signal_connect (self->mixer, "samples-selected",
if (GST_IS_BIN (self->mixer)) {
g_object_get (self->mixer, "mixer", &mixer, NULL);
g_assert (mixer);
} else {
mixer = gst_object_ref (self->mixer);
}
g_object_set (mixer, "background", 1, "emit-signals", TRUE, NULL);
g_signal_connect (mixer, "samples-selected",
G_CALLBACK (ges_smart_mixer_samples_selected_cb), self);
gst_object_unref (mixer);
/* See https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/310 */
GST_FIXME ("Stop dropping allocation query when it is not required anymore.");

46
ges/ges-utils.c
View file

@ -137,6 +137,7 @@ find_compositor (GstPluginFeature * feature, gpointer udata)
gboolean res = FALSE;
const gchar *klass;
GstPluginFeature *loaded_feature = NULL;
GstElement *elem = NULL;
if (G_UNLIKELY (!GST_IS_ELEMENT_FACTORY (feature)))
return FALSE;
@ -153,9 +154,48 @@ find_compositor (GstPluginFeature * feature, gpointer udata)
return FALSE;
}
res =
g_type_is_a (gst_element_factory_get_element_type (GST_ELEMENT_FACTORY
(loaded_feature)), GST_TYPE_AGGREGATOR);
/* Some hardware compositor elements (d3d11compositor for example) consist of
* bin with internal mixer elements */
if (g_type_is_a (gst_element_factory_get_element_type (GST_ELEMENT_FACTORY
(loaded_feature)), GST_TYPE_BIN)) {
GParamSpec *pspec;
GstElement *mixer = NULL;
elem =
gst_element_factory_create (GST_ELEMENT_FACTORY_CAST (loaded_feature),
NULL);
/* Checks whether this element has mixer property and the internal element
* is aggregator subclass */
if (!elem) {
GST_ERROR ("Could not create element from factory %" GST_PTR_FORMAT,
feature);
goto done;
}
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (elem), "mixer");
if (!pspec)
goto done;
if (!g_type_is_a (pspec->value_type, GST_TYPE_ELEMENT))
goto done;
g_object_get (elem, "mixer", &mixer, NULL);
if (!mixer)
goto done;
if (GST_IS_AGGREGATOR (mixer))
res = TRUE;
gst_object_unref (mixer);
} else {
res =
g_type_is_a (gst_element_factory_get_element_type (GST_ELEMENT_FACTORY
(loaded_feature)), GST_TYPE_AGGREGATOR);
}
done:
gst_clear_object (&elem);
gst_object_unref (loaded_feature);
return res;
}