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track: Implement infrastructure for mixing

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This commit is contained in:
Thibault Saunier 2013-03-30 19:02:52 +01:00
parent 58aba118a6
commit 7e25aaeccc
2 changed files with 30 additions and 0 deletions
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28
ges/ges-track.c
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@ -517,6 +517,8 @@ ges_track_class_init (GESTrackClass * klass)
g_signal_new ("track-element-removed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 1, GES_TYPE_TRACK_ELEMENT);
klass->get_mixing_element = NULL;
}
static void
@ -542,6 +544,32 @@ ges_track_init (GESTrack * self)
if (!gst_bin_add (GST_BIN (self), self->priv->composition))
GST_ERROR ("Couldn't add composition to bin !");
if (GES_TRACK_GET_CLASS (self)->get_mixing_element) {
GstElement *gnlobject;
GstElement *mixer = GES_TRACK_GET_CLASS (self)->get_mixing_element (self);
if (mixer == NULL) {
GST_WARNING_OBJECT (self, "Got no element fron get_mixing_element");
return;
}
gnlobject = gst_element_factory_make ("gnloperation", "mixing-operation");
if (!gst_bin_add (GST_BIN (gnlobject), mixer)) {
GST_WARNING_OBJECT (self, "Could not add the mixer to our composition");
return;
}
g_object_set (gnlobject, "start", GST_CLOCK_TIME_NONE, "duration",
GST_CLOCK_TIME_NONE, "prioirity", 0, NULL);
if (!gst_bin_add (GST_BIN (self->priv->composition), gnlobject)) {
GST_WARNING_OBJECT (self, "Could not add the mixer to our composition");
return;
}
}
}
/**

2
ges/ges-track.h
View file

@ -75,6 +75,8 @@ struct _GESTrackClass
/*< private >*/
GstBinClass parent_class;
GstElement * (*get_mixing_element) (GESTrack *track);
/* Padding for API extension */
gpointer _ges_reserved[GES_PADDING];
};