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title-source: Force format with alpha channels out of videotestsrc

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Making sure the user can set a background of the title with an alpha
channel.

Working around https://bugzilla.gnome.org/show_bug.cgi?id=755482 for
the 1.6 branch.
This commit is contained in:
Thibault Saunier 2015-09-27 15:15:10 +02:00
parent f019118ca8
commit 7d1e101072
1 changed files with 10 additions and 3 deletions
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13
ges/ges-title-source.c
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@ -231,7 +231,8 @@ ges_title_source_set_property (GObject * object,
static GstElement *
ges_title_source_create_source (GESTrackElement * object)
{
GstElement *topbin, *background, *text;
GstCaps *alphacaps;
GstElement *topbin, *background, *text, *capsfilter;
GstPad *src, *pad;
GESTitleSource *self = GES_TITLE_SOURCE (object);
@ -243,7 +244,11 @@ ges_title_source_create_source (GESTrackElement * object)
topbin = gst_bin_new ("titlesrc-bin");
background = gst_element_factory_make ("videotestsrc", "titlesrc-bg");
capsfilter = gst_element_factory_make ("capsfilter", NULL);
alphacaps =
gst_caps_from_string ("video/x-raw, format={AYUV, AYUV64, ARGB, ARGB64}");
g_object_set (capsfilter, "caps", alphacaps, NULL);
text = gst_element_factory_make ("textoverlay", "titlsrc-text");
if (priv->text) {
g_object_set (text, "text", priv->text, NULL);
@ -263,9 +268,11 @@ ges_title_source_create_source (GESTrackElement * object)
g_object_set (background, "foreground-color", (guint) self->priv->background,
NULL);
gst_bin_add_many (GST_BIN (topbin), background, text, NULL);
gst_bin_add_many (GST_BIN (topbin), background, capsfilter, text, NULL);
gst_element_link_pads_full (background, "src", text, "video_sink",
gst_element_link_pads_full (background, "src", capsfilter, "sink",
GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full (capsfilter, "src", text, "video_sink",
GST_PAD_LINK_CHECK_NOTHING);
pad = gst_element_get_static_pad (text, "src");