[gimp/gimp-2-10] plug-ins: compose migrated to new iterator api

[Øyvind "pippin" Kolås <ok src gnome org>]

commit ab1bb27129c5a3d189f97868369b4a8a6f1c9bbf
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Sep 11 01:52:42 2018 +0200

    plug-ins: compose migrated to new iterator api
    
    (cherry picked from commit b7633c722e35e281afe9f8cabed50c846f29ee10)

 plug-ins/common/compose.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/plug-ins/common/compose.c b/plug-ins/common/compose.c
index c6bf81d13a..f387d163b2 100644
--- a/plug-ins/common/compose.c
+++ b/plug-ins/common/compose.c
@@ -34,6 +34,7 @@
  * They can be dropped for GIMP 3.0
  */
 
+#define GEGL_ITERATOR2_API
 #include "config.h"
 
 #include <string.h>
@@ -658,11 +659,11 @@ cpn_affine_transform (GeglBuffer *buffer,
   gegl_buffer_set_format (buffer, babl_format ("Y double"));
 
   gi = gegl_buffer_iterator_new (buffer, NULL, 0, NULL,
-                                 GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE);
+                                 GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
 
   while (gegl_buffer_iterator_next (gi))
     {
-      gdouble *data = gi->data[0];
+      gdouble *data = gi->items[0].data;
       guint    k;
 
       for (k = 0; k < gi->length; k++)
@@ -683,7 +684,7 @@ fill_buffer_from_components (GeglBuffer   *temp[MAX_COMPOSE_IMAGES],
   gint                j;
 
   gi = gegl_buffer_iterator_new (dst, NULL, 0, NULL,
-                                 GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
+                                 GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 10);
 
   for (j = 0; j < num_cpn; j++)
     {
@@ -695,13 +696,13 @@ fill_buffer_from_components (GeglBuffer   *temp[MAX_COMPOSE_IMAGES],
   while (gegl_buffer_iterator_next (gi))
     {
       gdouble *src_data[MAX_COMPOSE_IMAGES];
-      gdouble *dst_data = (gdouble*) gi->data[0];
+      gdouble *dst_data = (gdouble*) gi->items[0].data;
       gulong   k, count;
 
       count = 1;
       for (j = 0; j < num_cpn; j++)
         if (inputs[j].is_ID)
-          src_data[j] = (gdouble*) gi->data[count++];
+          src_data[j] = (gdouble*) gi->items[count++].data;
 
       for (k = 0; k < gi->length; k++)
         {