[gimp/gimp-2-10] app: in gimp:mask-components, handle half-precision float formats

[Ell <ell src gnome org>]

commit 99130068bcae26c775b2892a04f043fcc644d6c7
Author: Ell <ell_se yahoo com>
Date:   Sat Feb 16 13:06:24 2019 -0500

    app: in gimp:mask-components, handle half-precision float formats
    
    (cherry picked from commit 7c1429d1fff162f2a69b4675533cc89f012dadef)

 app/operations/gimpoperationmaskcomponents.cc | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/app/operations/gimpoperationmaskcomponents.cc b/app/operations/gimpoperationmaskcomponents.cc
index 9f55b2c6de..6f4f469e80 100644
--- a/app/operations/gimpoperationmaskcomponents.cc
+++ b/app/operations/gimpoperationmaskcomponents.cc
@@ -397,6 +397,8 @@ gimp_operation_mask_components_get_format (const Babl *input_format)
             format = babl_format ("RGBA u16");
           else if (! strcmp (type_name, "u32"))
             format = babl_format ("RGBA u32");
+          else if (! strcmp (type_name, "half"))
+            format = babl_format ("RGBA half");
           else if (! strcmp (type_name, "float"))
             format = babl_format ("RGBA float");
         }
@@ -412,6 +414,8 @@ gimp_operation_mask_components_get_format (const Babl *input_format)
             format = babl_format ("R'G'B'A u16");
           else if (! strcmp (type_name, "u32"))
             format = babl_format ("R'G'B'A u32");
+          else if (! strcmp (type_name, "half"))
+            format = babl_format ("R'G'B'A half");
           else if (! strcmp (type_name, "float"))
             format = babl_format ("R'G'B'A float");
         }