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video-transition: Add a framepositioner at the end of the transitio

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So downstream compositor knows the zorder of the various streams
This commit is contained in:
Thibault Saunier 2015-09-23 21:12:33 +02:00
parent 5207d6dfca
commit d1c01678bc
1 changed files with 30 additions and 2 deletions
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32
ges/ges-video-transition.c
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@ -29,6 +29,7 @@
#include <gst/controller/gstdirectcontrolbinding.h>
#define parent_class ges_video_transition_parent_class
G_DEFINE_TYPE (GESVideoTransition, ges_video_transition, GES_TYPE_TRANSITION);
static inline void
@ -63,6 +64,8 @@ struct _GESVideoTransitionPrivate
/* This is in case the smpte doesn't exist yet */
gint pending_border_value;
gboolean pending_inverted;
GstElement *positionner;
};
enum
@ -105,11 +108,28 @@ duration_changed_cb (GESTrackElement * self, GParamSpec * arg G_GNUC_UNUSED)
ges_timeline_element_get_duration (GES_TIMELINE_ELEMENT (self)));
}
static gboolean
_set_priority (GESTimelineElement * element, guint32 priority)
{
gboolean res;
GESVideoTransition *self = GES_VIDEO_TRANSITION (element);
res = GES_TIMELINE_ELEMENT_CLASS (parent_class)->set_priority (element,
priority);
if (res && self->priv->positionner)
g_object_set (self->priv->positionner, "zorder",
G_MAXUINT - priority, NULL);
return res;
}
static void
ges_video_transition_class_init (GESVideoTransitionClass * klass)
{
GObjectClass *object_class;
GESTrackElementClass *toclass;
GESTimelineElementClass *element_class = GES_TIMELINE_ELEMENT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESVideoTransitionPrivate));
@ -159,6 +179,8 @@ ges_video_transition_class_init (GESVideoTransitionClass * klass)
toclass = GES_TRACK_ELEMENT_CLASS (klass);
toclass->create_element = ges_video_transition_create_element;
element_class->set_priority = _set_priority;
}
static void
@ -308,9 +330,14 @@ ges_video_transition_create_element (GESTrackElement * object)
iconva = gst_element_factory_make ("videoconvert", "tr-csp-a");
iconvb = gst_element_factory_make ("videoconvert", "tr-csp-b");
priv->positionner =
gst_element_factory_make ("framepositionner", "frame_tagger");
g_object_set (priv->positionner, "zorder",
G_MAXUINT - GES_TIMELINE_ELEMENT_PRIORITY (self), NULL);
oconv = gst_element_factory_make ("videoconvert", "tr-csp-output");
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, oconv, NULL);
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, priv->positionner,
oconv, NULL);
mixer = ges_smart_mixer_new (NULL);
g_assert (mixer);
@ -327,7 +354,8 @@ ges_video_transition_create_element (GESTrackElement * object)
g_object_set (priv->mixer_sinka, "zorder", 0, NULL);
g_object_set (priv->mixer_sinkb, "zorder", 1, NULL);
fast_element_link (mixer, oconv);
fast_element_link (mixer, priv->positionner);
fast_element_link (priv->positionner, oconv);
sinka_target = gst_element_get_static_pad (iconva, "sink");
sinkb_target = gst_element_get_static_pad (iconvb, "sink");