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video-transition: When using non crossfade effect use 'over' operations

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For smptealph element to work as expected the following compositing
element should mix with the default "over" operator, as described
in its documentation.
This commit is contained in:
Thibault Saunier 2019-05-17 19:54:51 -04:00 committed by Thibault Saunier
parent dac2d52670
commit 1729104c2c
1 changed files with 13 additions and 2 deletions
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15
ges/ges-video-transition.c
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@ -364,9 +364,13 @@ ges_video_transition_create_element (GESTrackElement * object)
mixer, GES_VIDEO_STANDARD_TRANSITION_TYPE_BAR_WIPE_LR, &priv->smpte,
priv, &priv->mixer_ghostb);
g_object_set (priv->mixer_sinka, "zorder", 0, NULL);
gst_util_set_object_arg (G_OBJECT (priv->mixer_sinka), "operator", "source");
g_object_set (priv->mixer_sinkb, "zorder", 1, NULL);
gst_util_set_object_arg (G_OBJECT (priv->mixer_sinkb), "operator", "add");
gst_util_set_object_arg (G_OBJECT (priv->mixer_sinka), "operator",
priv->type ==
GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE ? "source" : "over");
gst_util_set_object_arg (G_OBJECT (priv->mixer_sinkb), "operator",
priv->type ==
GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE ? "add" : "over");
fast_element_link (mixer, priv->positioner);
fast_element_link (priv->positioner, oconv);
@ -539,6 +543,13 @@ ges_video_transition_set_transition_type_internal (GESVideoTransition
g_object_set (priv->smpte, "type", (gint) type, NULL);
}
gst_util_set_object_arg (G_OBJECT (priv->mixer_sinka), "operator",
priv->type ==
GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE ? "source" : "over");
gst_util_set_object_arg (G_OBJECT (priv->mixer_sinkb), "operator",
priv->type ==
GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE ? "add" : "over");
return TRUE;
}