textoverlay: Add support for vertical center alignment

Fixes bug #639159.

diff --git a/ext/pango/gsttextoverlay.c b/ext/pango/gsttextoverlay.c
index 915a59c..c09de83 100644 (file)
--- a/ext/pango/gsttextoverlay.c
+++ b/ext/pango/gsttextoverlay.c
@@ -216,6 +216,7 @@ gst_text_overlay_valign_get_type (void)
     {GST_TEXT_OVERLAY_VALIGN_BOTTOM, "bottom", "bottom"},
     {GST_TEXT_OVERLAY_VALIGN_TOP, "top", "top"},
     {GST_TEXT_OVERLAY_VALIGN_POS, "position", "position"},
+    {GST_TEXT_OVERLAY_VALIGN_CENTER, "center", "center"},
     {0, NULL, NULL},
   };
 
@@ -1798,6 +1799,9 @@ gst_text_overlay_push_frame (GstTextOverlay * overlay, GstBuffer * video_frame)
       ypos = (gint) (overlay->height * overlay->ypos) - height / 2;
       ypos = CLAMP (ypos, 0, overlay->height - height);
       break;
+    case GST_TEXT_OVERLAY_VALIGN_CENTER:
+      ypos = (overlay->height - height) / 2;
+      break;
     default:
       ypos = overlay->ypad;
       break;

diff --git a/ext/pango/gsttextoverlay.h b/ext/pango/gsttextoverlay.h
index 5fddf3a..10dd947 100644 (file)
--- a/ext/pango/gsttextoverlay.h
+++ b/ext/pango/gsttextoverlay.h
@@ -35,7 +35,8 @@ typedef enum {
     GST_TEXT_OVERLAY_VALIGN_BASELINE,
     GST_TEXT_OVERLAY_VALIGN_BOTTOM,
     GST_TEXT_OVERLAY_VALIGN_TOP,
-    GST_TEXT_OVERLAY_VALIGN_POS
+    GST_TEXT_OVERLAY_VALIGN_POS,
+    GST_TEXT_OVERLAY_VALIGN_CENTER
 } GstTextOverlayVAlign;
 
 /**