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ges/ges-track-video-transition.c: fix transition of different video sizes

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This commit is contained in:
Luis de Bethencourt 2011-08-14 20:27:08 +02:00
parent f4fe8af5c4
commit 32f0a49c6a
1 changed files with 44 additions and 5 deletions
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49
ges/ges-track-video-transition.c
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@ -180,14 +180,36 @@ ges_track_video_transition_set_property (GObject * object,
}
}
static void
on_caps_set (GstPad * srca_pad, GParamSpec * pspec, GstElement * capsfilt)
{
gint width, height;
const GstStructure *str;
GstCaps *size_caps = NULL;
if (GST_PAD_CAPS (srca_pad)) {
/* Get width and height of first video */
str = gst_caps_get_structure (GST_PAD_CAPS (srca_pad), 0);
gst_structure_get_int (str, "width", &width);
gst_structure_get_int (str, "height", &height);
/* Set capsfilter to the size of the first video */
size_caps =
gst_caps_new_simple ("video/x-raw-yuv", "width", G_TYPE_INT, width,
"height", G_TYPE_INT, height, NULL);
g_object_set (capsfilt, "caps", size_caps, NULL);
}
}
static GstElement *
ges_track_video_transition_create_element (GESTrackObject * object)
{
GstElement *topbin, *iconva, *iconvb, *oconv;
GstElement *topbin, *iconva, *iconvb, *scalea, *scaleb, *capsfilt, *oconv;
GObject *target = NULL;
const gchar *propname = NULL;
GstElement *mixer = NULL;
GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src;
GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src,
*srca_pad;
GstController *controller;
GstInterpolationControlSource *control_source;
GESTrackVideoTransition *self;
@ -201,9 +223,14 @@ ges_track_video_transition_create_element (GESTrackObject * object)
topbin = gst_bin_new ("transition-bin");
iconva = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-a");
iconvb = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-b");
scalea = gst_element_factory_make ("videoscale", "vs-a");
scaleb = gst_element_factory_make ("videoscale", "vs-b");
capsfilt = gst_element_factory_make ("capsfilter", "capsfilt");
oconv = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-output");
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, oconv, NULL);
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, scalea, scaleb, capsfilt,
oconv, NULL);
/* Prefer videomixer2 to videomixer */
mixer = gst_element_factory_make ("videomixer2", NULL);
if (mixer == NULL)
@ -223,8 +250,15 @@ ges_track_video_transition_create_element (GESTrackObject * object)
priv->start_value = 1.0;
priv->end_value = 0.0;
} else {
priv->sinka = (GstPad *) link_element_to_mixer (iconva, mixer);
priv->sinkb = (GstPad *) link_element_to_mixer (iconvb, mixer);
gst_element_link_pads_full (iconva, "src", scalea, "sink",
GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full (iconvb, "src", scaleb, "sink",
GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full (scaleb, "src", capsfilt, "sink",
GST_PAD_LINK_CHECK_NOTHING);
priv->sinka = (GstPad *) link_element_to_mixer (scalea, mixer);
priv->sinkb = (GstPad *) link_element_to_mixer (capsfilt, mixer);
target = (GObject *) priv->sinkb;
propname = "alpha";
priv->start_value = 0.0;
@ -247,9 +281,14 @@ ges_track_video_transition_create_element (GESTrackObject * object)
gst_element_add_pad (topbin, sinka);
gst_element_add_pad (topbin, sinkb);
srca_pad = gst_element_get_static_pad (scalea, "src");
g_signal_connect (srca_pad, "notify::caps", G_CALLBACK (on_caps_set),
(GstElement *) capsfilt);
gst_object_unref (sinka_target);
gst_object_unref (sinkb_target);
gst_object_unref (src_target);
gst_object_unref (srca_pad);
/* set up interpolation */