[gimp] app: add gimp_babl_compat_u8_format() instead of having this code 5 times

[Michael Natterer <mitch src gnome org>]

commit 926f746b664c5142baf34e1d44883d3ea366172e
Author: Michael Natterer <mitch gimp org>
Date:   Fri Apr 27 11:11:58 2012 +0200

    app: add gimp_babl_compat_u8_format() instead of having this code 5 times

 app/gegl/gimp-babl-compat.c      |   15 +++++++++++++++
 app/gegl/gimp-babl-compat.h      |    2 ++
 app/pdb/drawable-cmds.c          |   15 +++------------
 app/plug-in/gimpplugin-message.c |   15 +++++----------
 tools/pdbgen/pdb/drawable.pdb    |   15 +++------------
 5 files changed, 28 insertions(+), 34 deletions(-)
---
diff --git a/app/gegl/gimp-babl-compat.c b/app/gegl/gimp-babl-compat.c
index ebb794a..c820d1f 100644
--- a/app/gegl/gimp-babl-compat.c
+++ b/app/gegl/gimp-babl-compat.c
@@ -24,6 +24,7 @@
 
 #include "gimp-gegl-types.h"
 
+#include "gimp-babl.h"
 #include "gimp-babl-compat.h"
 
 
@@ -66,3 +67,17 @@ gimp_babl_format_get_image_type (const Babl *format)
 
   g_return_val_if_reached (-1);
 }
+
+const Babl *
+gimp_babl_compat_u8_format (const Babl *format)
+{
+  g_return_val_if_fail (format != NULL, NULL);
+
+  /*  indexed images only exist in u8, return the same format  */
+  if (babl_format_is_palette (format))
+    return format;
+
+  return gimp_babl_format (gimp_babl_format_get_base_type (format),
+                           GIMP_PRECISION_U8,
+                           babl_format_has_alpha (format));
+}
diff --git a/app/gegl/gimp-babl-compat.h b/app/gegl/gimp-babl-compat.h
index d5b87c2..870b0b2 100644
--- a/app/gegl/gimp-babl-compat.h
+++ b/app/gegl/gimp-babl-compat.h
@@ -24,5 +24,7 @@
 
 GimpImageType   gimp_babl_format_get_image_type (const Babl *format);
 
+const Babl    * gimp_babl_compat_u8_format      (const Babl *format);
+
 
 #endif /* __GIMP_BABL_COMPAT_H__ */
diff --git a/app/pdb/drawable-cmds.c b/app/pdb/drawable-cmds.c
index 8994e31..d82bd15 100644
--- a/app/pdb/drawable-cmds.c
+++ b/app/pdb/drawable-cmds.c
@@ -277,10 +277,7 @@ drawable_bpp_invoker (GimpProcedure      *procedure,
       if (! gimp->plug_in_manager->current_plug_in ||
           ! gimp_plug_in_precision_enabled (gimp->plug_in_manager->current_plug_in))
         {
-          if (! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
-            format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                       GIMP_PRECISION_U8,
-                                       babl_format_has_alpha (format));
+          format = gimp_babl_compat_u8_format (format);
         }
 
       bpp = babl_format_get_bytes_per_pixel (format);
@@ -614,10 +611,7 @@ drawable_get_pixel_invoker (GimpProcedure      *procedure,
       if (! gimp->plug_in_manager->current_plug_in ||
           ! gimp_plug_in_precision_enabled (gimp->plug_in_manager->current_plug_in))
         {
-          if (! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
-            format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                       GIMP_PRECISION_U8,
-                                       babl_format_has_alpha (format));
+          format = gimp_babl_compat_u8_format (format);
         }
 
       if (x_coord < gimp_item_get_width  (GIMP_ITEM (drawable)) &&
@@ -671,10 +665,7 @@ drawable_set_pixel_invoker (GimpProcedure      *procedure,
       if (! gimp->plug_in_manager->current_plug_in ||
           ! gimp_plug_in_precision_enabled (gimp->plug_in_manager->current_plug_in))
         {
-          if (! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
-            format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                       GIMP_PRECISION_U8,
-                                       babl_format_has_alpha (format));
+          format = gimp_babl_compat_u8_format (format);
         }
 
       if (gimp_pdb_item_is_writable (GIMP_ITEM (drawable), error) &&
diff --git a/app/plug-in/gimpplugin-message.c b/app/plug-in/gimpplugin-message.c
index 1c28d71..09a2a49 100644
--- a/app/plug-in/gimpplugin-message.c
+++ b/app/plug-in/gimpplugin-message.c
@@ -30,6 +30,7 @@
 #include "plug-in-types.h"
 
 #include "gegl/gimp-babl.h"
+#include "gegl/gimp-babl-compat.h"
 #include "gegl/gimp-gegl-tile-compat.h"
 
 #include "core/gimp.h"
@@ -313,12 +314,9 @@ gimp_plug_in_handle_tile_put (GimpPlugIn *plug_in,
 
   format = gegl_buffer_get_format (buffer);
 
-  if (! gimp_plug_in_precision_enabled (plug_in) &&
-      ! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
+  if (! gimp_plug_in_precision_enabled (plug_in))
     {
-      format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                 GIMP_PRECISION_U8,
-                                 babl_format_has_alpha (format));
+      format = gimp_babl_compat_u8_format (format);
     }
 
   if (tile_data.use_shm)
@@ -412,12 +410,9 @@ gimp_plug_in_handle_tile_get (GimpPlugIn *plug_in,
 
   format = gegl_buffer_get_format (buffer);
 
-  if (! gimp_plug_in_precision_enabled (plug_in) &&
-      ! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
+  if (! gimp_plug_in_precision_enabled (plug_in))
     {
-      format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                 GIMP_PRECISION_U8,
-                                 babl_format_has_alpha (format));
+      format = gimp_babl_compat_u8_format (format);
     }
 
   tile_size = (babl_format_get_bytes_per_pixel (format) *
diff --git a/tools/pdbgen/pdb/drawable.pdb b/tools/pdbgen/pdb/drawable.pdb
index 6648a43..c3ab5dd 100644
--- a/tools/pdbgen/pdb/drawable.pdb
+++ b/tools/pdbgen/pdb/drawable.pdb
@@ -498,10 +498,7 @@ HELP
   if (! gimp->plug_in_manager->current_plug_in ||
       ! gimp_plug_in_precision_enabled (gimp->plug_in_manager->current_plug_in))
     {
-      if (! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
-        format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                   GIMP_PRECISION_U8,
-                                   babl_format_has_alpha (format));
+      format = gimp_babl_compat_u8_format (format);
     }
 
   bpp = babl_format_get_bytes_per_pixel (format);
@@ -628,10 +625,7 @@ HELP
   if (! gimp->plug_in_manager->current_plug_in ||
       ! gimp_plug_in_precision_enabled (gimp->plug_in_manager->current_plug_in))
     {
-      if (! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
-        format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                   GIMP_PRECISION_U8,
-                                   babl_format_has_alpha (format));
+      format = gimp_babl_compat_u8_format (format);
     }
 
   if (x_coord < gimp_item_get_width  (GIMP_ITEM (drawable)) &&
@@ -682,10 +676,7 @@ HELP
   if (! gimp->plug_in_manager->current_plug_in ||
       ! gimp_plug_in_precision_enabled (gimp->plug_in_manager->current_plug_in))
     {
-      if (! gimp_drawable_is_indexed (drawable) /* XXX fixme */)
-        format = gimp_babl_format (gimp_babl_format_get_base_type (format),
-                                   GIMP_PRECISION_U8,
-                                   babl_format_has_alpha (format));
+      format = gimp_babl_compat_u8_format (format);
     }
 
   if (gimp_pdb_item_is_writable (GIMP_ITEM (drawable), error) &&