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Track: Handle pads

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This commit is contained in:
Edward Hervey 2009-08-07 20:32:47 +02:00
parent c06e2a9550
commit 9fae1526bb
2 changed files with 40 additions and 0 deletions
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39
ges/ges-track.c
View file

@ -37,6 +37,11 @@ enum
ARG_CAPS ARG_CAPS
}; };
static void pad_added_cb (GstElement * element, GstPad * pad, GESTrack * track);
static void
pad_removed_cb (GstElement * element, GstPad * pad, GESTrack * track);
static void static void
ges_track_get_property (GObject * object, guint property_id, ges_track_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec) GValue * value, GParamSpec * pspec)
@ -109,6 +114,11 @@ ges_track_init (GESTrack * self)
{ {
self->composition = gst_element_factory_make ("gnlcomposition", NULL); self->composition = gst_element_factory_make ("gnlcomposition", NULL);
g_signal_connect (self->composition, "pad-added", (GCallback) pad_added_cb,
self);
g_signal_connect (self->composition, "pad-removed",
(GCallback) pad_removed_cb, self);
if (!gst_bin_add (GST_BIN (self), self->composition)) if (!gst_bin_add (GST_BIN (self), self->composition))
GST_ERROR ("Couldn't add composition to bin !"); GST_ERROR ("Couldn't add composition to bin !");
} }
@ -219,3 +229,32 @@ ges_track_remove_object (GESTrack * track, GESTrackObject * object)
return TRUE; return TRUE;
} }
static void
pad_added_cb (GstElement * element, GstPad * pad, GESTrack * track)
{
GST_DEBUG ("track:%p, pad %s:%s", track, GST_DEBUG_PAD_NAME (pad));
/* ghost the pad */
track->srcpad = gst_ghost_pad_new ("src", pad);
gst_pad_set_active (track->srcpad, TRUE);
gst_element_add_pad (GST_ELEMENT (track), track->srcpad);
GST_DEBUG ("done");
}
static void
pad_removed_cb (GstElement * element, GstPad * pad, GESTrack * track)
{
GST_DEBUG ("track:%p, pad %s:%s", track, GST_DEBUG_PAD_NAME (pad));
if (G_LIKELY (track->srcpad)) {
gst_pad_set_active (track->srcpad, FALSE);
gst_element_remove_pad (GST_ELEMENT (track), track->srcpad);
track->srcpad = NULL;
}
GST_DEBUG ("done");
}

1
ges/ges-track.h
View file

@ -51,6 +51,7 @@ struct _GESTrack {
GstCaps * caps; GstCaps * caps;
GstElement * composition; /* The composition associated with this track */ GstElement * composition; /* The composition associated with this track */
GstPad * srcpad; /* The source GhostPad */
}; };
struct _GESTrackClass { struct _GESTrackClass {