ycbcr: add model alpha meta data

diff --git a/extensions/ycbcr.c b/extensions/ycbcr.c
index 200aa78a6504df58df1e16ebf7fe12fb70ff85d4..a71577bf20646f650c8a19cacf7a2f37897a6d95 100644 (file)
--- a/extensions/ycbcr.c
+++ b/extensions/ycbcr.c
@@ -67,6 +67,7 @@ models (void)
     babl_component ("Cb"),
     babl_component ("Cr"),
     babl_component ("alpha"),
+    "alpha",
     NULL);
 }