[gimp/wip/Jehan/classy-GIMP: 49/50] plug-ins: port file-psd to GimpImage/GimpDrawable.



commit fb4169797d8ded83ca3deef154f884feeaad01d5
Author: Jehan <jehan girinstud io>
Date:   Mon Aug 19 16:04:15 2019 +0200

    plug-ins: port file-psd to GimpImage/GimpDrawable.

 plug-ins/file-psd/Makefile.am          |   1 -
 plug-ins/file-psd/psd-image-res-load.c | 174 ++++++-------
 plug-ins/file-psd/psd-image-res-load.h |   4 +-
 plug-ins/file-psd/psd-load.c           | 230 ++++++++---------
 plug-ins/file-psd/psd-load.h           |  10 +-
 plug-ins/file-psd/psd-save.c           | 456 +++++++++++++++++----------------
 plug-ins/file-psd/psd-save.h           |   2 +-
 plug-ins/file-psd/psd-thumb-load.c     |  48 ++--
 plug-ins/file-psd/psd-thumb-load.h     |   8 +-
 plug-ins/file-psd/psd.c                |  48 ++--
 10 files changed, 494 insertions(+), 487 deletions(-)
---
diff --git a/plug-ins/file-psd/Makefile.am b/plug-ins/file-psd/Makefile.am
index 709fd74f05..d8f4f3577e 100644
--- a/plug-ins/file-psd/Makefile.am
+++ b/plug-ins/file-psd/Makefile.am
@@ -45,7 +45,6 @@ EXTRA_DIST = \
        new-resource-ids.txt
 
 AM_CPPFLAGS = \
-       -DGIMP_DEPRECATED_REPLACE_NEW_API \
        -DG_LOG_DOMAIN=\"file-psd\"     \
        -I$(top_srcdir)                 \
        $(GTK_CFLAGS)                   \
diff --git a/plug-ins/file-psd/psd-image-res-load.c b/plug-ins/file-psd/psd-image-res-load.c
index 7949c6ca52..650ed44cb1 100644
--- a/plug-ins/file-psd/psd-image-res-load.c
+++ b/plug-ins/file-psd/psd-image-res-load.c
@@ -137,99 +137,99 @@
 
 /*  Local function prototypes  */
 static gint     load_resource_unknown  (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_ps_only  (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1005     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1006     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1007     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1008     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1022     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1024     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1028     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1032     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1033     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1039     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1045     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1046     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1053     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1058     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_1077     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         PSDimage              *img_a,
                                         FILE                  *f,
                                         GError               **error);
 
 static gint     load_resource_2000     (const PSDimageres     *res_a,
-                                        gint32                 image_id,
+                                        GimpImage             *image,
                                         FILE                  *f,
                                         GError               **error);
 
@@ -274,7 +274,7 @@ get_image_resource_header (PSDimageres  *res_a,
 
 gint
 load_image_resource (PSDimageres  *res_a,
-                     gint32        image_id,
+                     GimpImage    *image,
                      PSDimage     *img_a,
                      FILE         *f,
                      gboolean     *resolution_loaded,
@@ -322,87 +322,87 @@ load_image_resource (PSDimageres  *res_a,
           case PSD_JPEG_QUAL:
             /* Save photoshop resources with no meaning for GIMP
               as image parasites */
-            load_resource_ps_only (res_a, image_id, f, error);
+            load_resource_ps_only (res_a, image, f, error);
             break;
 
           case PSD_RESN_INFO:
-            if (! load_resource_1005 (res_a, image_id, f, error))
+            if (! load_resource_1005 (res_a, image, f, error))
               *resolution_loaded = TRUE;
             break;
 
           case PSD_ALPHA_NAMES:
             if (! img_a->merged_image_only)
-              load_resource_1006 (res_a, image_id, img_a, f, error);
+              load_resource_1006 (res_a, image, img_a, f, error);
             break;
 
           case PSD_DISPLAY_INFO:
-            load_resource_1007 (res_a, image_id, img_a, f, error);
+            load_resource_1007 (res_a, image, img_a, f, error);
             break;
 
           case PSD_CAPTION:
-            load_resource_1008 (res_a, image_id, f, error);
+            load_resource_1008 (res_a, image, f, error);
             break;
 
           case PSD_QUICK_MASK:
             if (! img_a->merged_image_only)
-              load_resource_1022 (res_a, image_id, img_a, f, error);
+              load_resource_1022 (res_a, image, img_a, f, error);
             break;
 
           case PSD_LAYER_STATE:
             if (! img_a->merged_image_only)
-              load_resource_1024 (res_a, image_id, img_a, f, error);
+              load_resource_1024 (res_a, image, img_a, f, error);
             break;
 
           case PSD_WORKING_PATH:
             if (! img_a->merged_image_only)
-              load_resource_2000 (res_a, image_id, f, error);
+              load_resource_2000 (res_a, image, f, error);
             break;
 
           case PSD_IPTC_NAA_DATA:
-            load_resource_1028 (res_a, image_id, f, error);
+            load_resource_1028 (res_a, image, f, error);
             break;
 
           case PSD_GRID_GUIDE:
             if (! img_a->merged_image_only)
-              load_resource_1032 (res_a, image_id, f, error);
+              load_resource_1032 (res_a, image, f, error);
             break;
 
           case PSD_ICC_PROFILE:
-            if (! load_resource_1039 (res_a, image_id, f, error))
+            if (! load_resource_1039 (res_a, image, f, error))
               *profile_loaded = TRUE;
             break;
 
           case PSD_ALPHA_NAMES_UNI:
             if (! img_a->merged_image_only)
-              load_resource_1045 (res_a, image_id, img_a, f, error);
+              load_resource_1045 (res_a, image, img_a, f, error);
             break;
 
           case PSD_IDX_COL_TAB_CNT:
-            load_resource_1046 (res_a, image_id, f, error);
+            load_resource_1046 (res_a, image, f, error);
             break;
 
           case PSD_ALPHA_ID:
             if (! img_a->merged_image_only)
-              load_resource_1053 (res_a, image_id, img_a, f, error);
+              load_resource_1053 (res_a, image, img_a, f, error);
             break;
 
           case PSD_EXIF_DATA:
-            load_resource_1058 (res_a, image_id, f, error);
+            load_resource_1058 (res_a, image, f, error);
             break;
 
           case PSD_XMP_DATA:
             break;
 
           case PSD_DISPLAY_INFO_NEW:
-            load_resource_1077 (res_a, image_id, img_a, f, error);
+            load_resource_1077 (res_a, image, img_a, f, error);
             break;
 
           default:
             if (res_a->id >= 2000 &&
                 res_a->id <  2999)
-              load_resource_2000 (res_a, image_id, f, error);
+              load_resource_2000 (res_a, image, f, error);
             else
-              load_resource_unknown (res_a, image_id, f, error);
+              load_resource_unknown (res_a, image, f, error);
         }
     }
 
@@ -424,7 +424,7 @@ load_image_resource (PSDimageres  *res_a,
 
 gint
 load_thumbnail_resource (PSDimageres  *res_a,
-                         gint32        image_id,
+                         GimpImage    *image,
                          FILE         *f,
                          GError      **error)
 {
@@ -443,7 +443,7 @@ load_thumbnail_resource (PSDimageres  *res_a,
       || res_a->id == PSD_THUMB_RES2)
     {
       /* Load thumbnails from standard file load */
-      load_resource_1033 (res_a, image_id, f, error);
+      load_resource_1033 (res_a, image, f, error);
       rtn = 1;
     }
 
@@ -467,7 +467,7 @@ load_thumbnail_resource (PSDimageres  *res_a,
 
 static gint
 load_resource_unknown (const PSDimageres  *res_a,
-                       gint32              image_id,
+                       GimpImage          *image,
                        FILE               *f,
                        GError            **error)
 {
@@ -491,7 +491,7 @@ load_resource_unknown (const PSDimageres  *res_a,
   IFDBG(2) g_debug ("Parasite name: %s", name);
 
   parasite = gimp_parasite_new (name, 0, res_a->data_len, data);
-  gimp_image_attach_parasite (image_id, parasite);
+  gimp_image_attach_parasite (image, parasite);
   gimp_parasite_free (parasite);
   g_free (data);
   g_free (name);
@@ -501,7 +501,7 @@ load_resource_unknown (const PSDimageres  *res_a,
 
 static gint
 load_resource_ps_only (const PSDimageres  *res_a,
-                       gint32              image_id,
+                       GimpImage          *image,
                        FILE               *f,
                        GError            **error)
 {
@@ -526,7 +526,7 @@ load_resource_ps_only (const PSDimageres  *res_a,
   IFDBG(2) g_debug ("Parasite name: %s", name);
 
   parasite = gimp_parasite_new (name, 0, res_a->data_len, data);
-  gimp_image_attach_parasite (image_id, parasite);
+  gimp_image_attach_parasite (image, parasite);
   gimp_parasite_free (parasite);
   g_free (data);
   g_free (name);
@@ -536,7 +536,7 @@ load_resource_ps_only (const PSDimageres  *res_a,
 
 static gint
 load_resource_1005 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -577,7 +577,7 @@ load_resource_1005 (const PSDimageres  *res_a,
   /* Resolution always recorded as pixels / inch in a fixed point implied
      decimal int32 with 16 bits before point and 16 after (i.e. cast as
      double and divide resolution by 2^16 */
-  gimp_image_set_resolution (image_id,
+  gimp_image_set_resolution (image,
                              res_info.hRes / 65536.0, res_info.vRes / 65536.0);
 
   /* GIMP only has one display unit so use ps horizontal resolution unit */
@@ -593,14 +593,14 @@ load_resource_1005 (const PSDimageres  *res_a,
       image_unit = GIMP_UNIT_INCH;
     }
 
-  gimp_image_set_unit (image_id, image_unit);
+  gimp_image_set_unit (image, image_unit);
 
   return 0;
 }
 
 static gint
 load_resource_1006 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -642,7 +642,7 @@ load_resource_1006 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1007 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -750,7 +750,7 @@ load_resource_1007 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1008 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -768,7 +768,7 @@ load_resource_1008 (const PSDimageres  *res_a,
   IFDBG(3) g_debug ("Caption: %s", caption);
   parasite = gimp_parasite_new (GIMP_PARASITE_COMMENT, GIMP_PARASITE_PERSISTENT,
                                 write_len, caption);
-  gimp_image_attach_parasite (image_id, parasite);
+  gimp_image_attach_parasite (image, parasite);
   gimp_parasite_free (parasite);
   g_free (caption);
 
@@ -777,7 +777,7 @@ load_resource_1008 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1022 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -804,7 +804,7 @@ load_resource_1022 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1024 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -824,7 +824,7 @@ load_resource_1024 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1028 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -865,7 +865,7 @@ load_resource_1028 (const PSDimageres  *res_a,
       parasite = gimp_parasite_new (GIMP_PARASITE_IPTC,
                                     GIMP_PARASITE_PERSISTENT,
                                     iptc_buf_len, iptc_buf);
-      gimp_image_attach_parasite (image_id, parasite);
+      gimp_image_attach_parasite (image, parasite);
       gimp_parasite_free (parasite);
     }
 
@@ -880,7 +880,7 @@ load_resource_1028 (const PSDimageres  *res_a,
   IFDBG(3) g_debug ("Parasite name: %s", name);
 
   parasite = gimp_parasite_new (name, 0, res_a->data_len, res_data);
-  gimp_image_attach_parasite (image_id, parasite);
+  gimp_image_attach_parasite (image, parasite);
   gimp_parasite_free (parasite);
   g_free (name);
 
@@ -892,7 +892,7 @@ load_resource_1028 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1032 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -941,9 +941,9 @@ load_resource_1032 (const PSDimageres  *res_a,
                          guide.fDirection);
 
       if (guide.fDirection == PSD_VERTICAL)
-        gimp_image_add_vguide (image_id, guide.fLocation);
+        gimp_image_add_vguide (image, guide.fLocation);
       else
-        gimp_image_add_hguide (image_id, guide.fLocation);
+        gimp_image_add_hguide (image, guide.fLocation);
     }
 
   return 0;
@@ -951,7 +951,7 @@ load_resource_1032 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1033 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -963,7 +963,7 @@ load_resource_1033 (const PSDimageres  *res_a,
   ThumbnailInfo         thumb_info;
   GeglBuffer           *buffer;
   const Babl           *format;
-  gint32                layer_id;
+  GimpLayer            *layer;
   guchar               *buf;
   guchar               *rgb_buf;
   guchar              **rowbuf;
@@ -1038,14 +1038,14 @@ load_resource_1033 (const PSDimageres  *res_a,
     rowbuf[i] = buf + cinfo.output_width * cinfo.output_components * i;
 
   /* Create image layer */
-  gimp_image_resize (image_id, cinfo.output_width, cinfo.output_height, 0, 0);
-  layer_id = gimp_layer_new (image_id, _("Background"),
-                             cinfo.output_width,
-                             cinfo.output_height,
-                             GIMP_RGB_IMAGE,
-                             100,
-                             gimp_image_get_default_new_layer_mode (image_id));
-  buffer = gimp_drawable_get_buffer (layer_id);
+  gimp_image_resize (image, cinfo.output_width, cinfo.output_height, 0, 0);
+  layer = gimp_layer_new (image, _("Background"),
+                          cinfo.output_width,
+                          cinfo.output_height,
+                          GIMP_RGB_IMAGE,
+                          100,
+                          gimp_image_get_default_new_layer_mode (image));
+  buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
   format = babl_format ("R'G'B' u8");
 
   /* Step 6: while (scan lines remain to be read) */
@@ -1097,7 +1097,7 @@ load_resource_1033 (const PSDimageres  *res_a,
    * corrupt-data warnings occurred (test whether
    * jerr.num_warnings is nonzero).
    */
-  gimp_image_insert_layer (image_id, layer_id, -1, 0);
+  gimp_image_insert_layer (image, layer, NULL, 0);
   g_object_unref (buffer);
 
   return 0;
@@ -1105,7 +1105,7 @@ load_resource_1033 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1039 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -1128,7 +1128,7 @@ load_resource_1039 (const PSDimageres  *res_a,
                                                      NULL);
   if (profile)
     {
-      gimp_image_set_color_profile (image_id, profile);
+      gimp_image_set_color_profile (image, profile);
       g_object_unref (profile);
     }
 
@@ -1139,7 +1139,7 @@ load_resource_1039 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1045 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -1188,7 +1188,7 @@ load_resource_1045 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1046 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -1210,9 +1210,9 @@ load_resource_1046 (const PSDimageres  *res_a,
   /* FIXME - check that we have indexed image */
   if (index_count && index_count < 256)
     {
-      cmap = gimp_image_get_colormap (image_id, &cmap_count);
+      cmap = gimp_image_get_colormap (image, &cmap_count);
       if (cmap && index_count < cmap_count)
-        gimp_image_set_colormap (image_id, cmap, index_count);
+        gimp_image_set_colormap (image, cmap, index_count);
       g_free (cmap);
     }
   return 0;
@@ -1220,7 +1220,7 @@ load_resource_1046 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1053 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -1254,7 +1254,7 @@ load_resource_1053 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1058 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
@@ -1280,7 +1280,7 @@ load_resource_1058 (const PSDimageres  *res_a,
   IFDBG(3) g_debug ("Parasite name: %s", name);
 
   parasite = gimp_parasite_new (name, 0, res_a->data_len, res_data);
-  gimp_image_attach_parasite (image_id, parasite);
+  gimp_image_attach_parasite (image, parasite);
   gimp_parasite_free (parasite);
   g_free (name);
 
@@ -1290,7 +1290,7 @@ load_resource_1058 (const PSDimageres  *res_a,
 
 static gint
 load_resource_1077 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     PSDimage           *img_a,
                     FILE               *f,
                     GError            **error)
@@ -1402,14 +1402,14 @@ load_resource_1077 (const PSDimageres  *res_a,
 
 static gint
 load_resource_2000 (const PSDimageres  *res_a,
-                    gint32              image_id,
+                    GimpImage          *image,
                     FILE               *f,
                     GError            **error)
 {
   gdouble      *controlpoints;
   gint32        x[3];
   gint32        y[3];
-  gint32        vector_id = -1;
+  GimpVectors  *vectors = NULL;
   gint16        type;
   gint16        init_fill;
   gint16        num_rec;
@@ -1449,22 +1449,22 @@ load_resource_2000 (const PSDimageres  *res_a,
   if (path_rec ==0)
     return 0;
 
-  image_width = gimp_image_width (image_id);
-  image_height = gimp_image_height (image_id);
+  image_width = gimp_image_width (image);
+  image_height = gimp_image_height (image);
 
   /* Create path */
   if (res_a->id == PSD_WORKING_PATH)
     {
       /* use "Working Path" for the path name to match the Photoshop display */
-      vector_id = gimp_vectors_new (image_id, "Working Path");
+      vectors = gimp_vectors_new (image, "Working Path");
     }
   else
     {
       /* Use the name stored in the PSD to name the path */
-      vector_id = gimp_vectors_new (image_id, res_a->name);
+      vectors = gimp_vectors_new (image, res_a->name);
     }
 
-  gimp_image_insert_vectors (image_id, vector_id, -1, -1);
+  gimp_image_insert_vectors (image, vectors, NULL, -1);
 
   while (path_rec > 0)
     {
@@ -1579,7 +1579,7 @@ load_resource_2000 (const PSDimageres  *res_a,
               num_rec--;
             }
           /* Add sub-path */
-          gimp_vectors_stroke_new_from_points (vector_id,
+          gimp_vectors_stroke_new_from_points (vectors,
                                                GIMP_VECTORS_STROKE_TYPE_BEZIER,
                                                cntr, controlpoints, closed);
           g_free (controlpoints);
diff --git a/plug-ins/file-psd/psd-image-res-load.h b/plug-ins/file-psd/psd-image-res-load.h
index c981a6b79f..c21a995929 100644
--- a/plug-ins/file-psd/psd-image-res-load.h
+++ b/plug-ins/file-psd/psd-image-res-load.h
@@ -27,7 +27,7 @@ gint  get_image_resource_header (PSDimageres  *res_a,
                                  GError      **error);
 
 gint  load_image_resource       (PSDimageres  *res_a,
-                                 gint32        image_id,
+                                 GimpImage    *image,
                                  PSDimage     *img_a,
                                  FILE         *f,
                                  gboolean     *resolution_loaded,
@@ -35,7 +35,7 @@ gint  load_image_resource       (PSDimageres  *res_a,
                                  GError      **error);
 
 gint  load_thumbnail_resource   (PSDimageres  *res_a,
-                                 gint32        image_id,
+                                 GimpImage    *image,
                                  FILE         *f,
                                  GError      **error);
 
diff --git a/plug-ins/file-psd/psd-load.c b/plug-ins/file-psd/psd-load.c
index d973eba29a..333842c3a3 100644
--- a/plug-ins/file-psd/psd-load.c
+++ b/plug-ins/file-psd/psd-load.c
@@ -60,26 +60,26 @@ static gint             read_merged_image_block    (PSDimage     *img_a,
                                                     FILE         *f,
                                                     GError      **error);
 
-static gint32           create_gimp_image          (PSDimage     *img_a,
+static GimpImage *      create_gimp_image          (PSDimage     *img_a,
                                                     const gchar  *filename);
 
-static gint             add_color_map              (gint32        image_id,
+static gint             add_color_map              (GimpImage    *image,
                                                     PSDimage     *img_a);
 
-static gint             add_image_resources        (gint32        image_id,
+static gint             add_image_resources        (GimpImage    *image,
                                                     PSDimage     *img_a,
                                                     FILE         *f,
                                                     gboolean     *resolution_loaded,
                                                     gboolean     *profile_loaded,
                                                     GError      **error);
 
-static gint             add_layers                 (gint32        image_id,
+static gint             add_layers                 (GimpImage    *image,
                                                     PSDimage     *img_a,
                                                     PSDlayer    **lyr_a,
                                                     FILE         *f,
                                                     GError      **error);
 
-static gint             add_merged_image           (gint32        image_id,
+static gint             add_merged_image           (GimpImage    *image,
                                                     PSDimage     *img_a,
                                                     FILE         *f,
                                                     GError      **error);
@@ -112,7 +112,7 @@ static const Babl*      get_mask_format            (PSDimage    *img_a);
 
 
 /* Main file load function */
-gint32
+GimpImage *
 load_image (const gchar  *filename,
             gboolean      merged_image_only,
             gboolean     *resolution_loaded,
@@ -123,12 +123,12 @@ load_image (const gchar  *filename,
   struct stat   st;
   PSDimage      img_a;
   PSDlayer    **lyr_a;
-  gint32        image_id = -1;
-  GError       *error    = NULL;
+  GimpImage    *image = NULL;
+  GError       *error = NULL;
 
   /* ----- Open PSD file ----- */
   if (g_stat (filename, &st) == -1)
-    return -1;
+    return NULL;
 
   gimp_progress_init_printf (_("Opening '%s'"),
                              gimp_filename_to_utf8 (filename));
@@ -140,7 +140,7 @@ load_image (const gchar  *filename,
       g_set_error (load_error, G_FILE_ERROR, g_file_error_from_errno (errno),
                    _("Could not open '%s' for reading: %s"),
                    gimp_filename_to_utf8 (filename), g_strerror (errno));
-      return -1;
+      return NULL;
     }
 
   img_a.merged_image_only = merged_image_only;
@@ -178,20 +178,20 @@ load_image (const gchar  *filename,
 
   /* ----- Create GIMP image ----- */
   IFDBG(2) g_debug ("Create GIMP image");
-  image_id = create_gimp_image (&img_a, filename);
-  if (image_id < 0)
+  image = create_gimp_image (&img_a, filename);
+  if (! image)
     goto load_error;
   gimp_progress_update (0.6);
 
   /* ----- Add color map ----- */
   IFDBG(2) g_debug ("Add color map");
-  if (add_color_map (image_id, &img_a) < 0)
+  if (add_color_map (image, &img_a) < 0)
     goto load_error;
   gimp_progress_update (0.7);
 
   /* ----- Add image resources ----- */
   IFDBG(2) g_debug ("Add image resources");
-  if (add_image_resources (image_id, &img_a, f,
+  if (add_image_resources (image, &img_a, f,
                            resolution_loaded, profile_loaded,
                            &error) < 0)
     goto load_error;
@@ -199,24 +199,24 @@ load_image (const gchar  *filename,
 
   /* ----- Add layers -----*/
   IFDBG(2) g_debug ("Add layers");
-  if (add_layers (image_id, &img_a, lyr_a, f, &error) < 0)
+  if (add_layers (image, &img_a, lyr_a, f, &error) < 0)
     goto load_error;
   gimp_progress_update (0.9);
 
   /* ----- Add merged image data and extra alpha channels ----- */
   IFDBG(2) g_debug ("Add merged image data and extra alpha channels");
-  if (add_merged_image (image_id, &img_a, f, &error) < 0)
+  if (add_merged_image (image, &img_a, f, &error) < 0)
     goto load_error;
   gimp_progress_update (1.0);
 
-  IFDBG(2) g_debug ("Close file & return, image id: %d", image_id);
+  IFDBG(2) g_debug ("Close file & return, image id: %d", gimp_image_get_id (image));
   IFDBG(1) g_debug ("\n----------------------------------------"
                     "----------------------------------------\n");
 
-  gimp_image_clean_all (image_id);
-  gimp_image_undo_enable (image_id);
+  gimp_image_clean_all (image);
+  gimp_image_undo_enable (image);
   fclose (f);
-  return image_id;
+  return image;
 
   /* ----- Process load errors ----- */
  load_error:
@@ -228,14 +228,14 @@ load_image (const gchar  *filename,
     }
 
   /* Delete partially loaded image */
-  if (image_id > 0)
-    gimp_image_delete (image_id);
+  if (image)
+    gimp_image_delete (image);
 
   /* Close file if Open */
   if (! (f == NULL))
     fclose (f);
 
-  return -1;
+  return NULL;
 }
 
 
@@ -973,12 +973,12 @@ read_merged_image_block (PSDimage  *img_a,
   return 0;
 }
 
-static gint32
+static GimpImage *
 create_gimp_image (PSDimage    *img_a,
                    const gchar *filename)
 {
-  gint32 image_id = -1;
-  GimpPrecision precision;
+  GimpImage     *image = NULL;
+  GimpPrecision  precision;
 
   switch (img_a->color_mode)
     {
@@ -999,7 +999,7 @@ create_gimp_image (PSDimage    *img_a,
     default:
       /* Color mode already validated - should not be here */
       g_warning ("Invalid color mode");
-      return -1;
+      return NULL;
       break;
     }
 
@@ -1021,23 +1021,23 @@ create_gimp_image (PSDimage    *img_a,
       default:
         /* Precision not supported */
         g_warning ("Invalid precision");
-        return -1;
+        return NULL;
         break;
       }
 
   /* Create gimp image */
   IFDBG(2) g_debug ("Create image");
-  image_id = gimp_image_new_with_precision (img_a->columns, img_a->rows,
-                                            img_a->base_type, precision);
-  gimp_image_set_filename (image_id, filename);
-  gimp_image_undo_disable (image_id);
+  image = gimp_image_new_with_precision (img_a->columns, img_a->rows,
+                                         img_a->base_type, precision);
+  gimp_image_set_filename (image, filename);
+  gimp_image_undo_disable (image);
 
-  return image_id;
+  return image;
 }
 
 static gint
-add_color_map (gint32    image_id,
-               PSDimage *img_a)
+add_color_map (GimpImage *image,
+               PSDimage  *img_a)
 {
   GimpParasite *parasite;
 
@@ -1045,7 +1045,7 @@ add_color_map (gint32    image_id,
     {
       if (img_a->color_mode != PSD_DUOTONE)
         {
-          gimp_image_set_colormap (image_id, img_a->color_map,
+          gimp_image_set_colormap (image, img_a->color_map,
                                    img_a->color_map_entries);
         }
       else
@@ -1054,7 +1054,7 @@ add_color_map (gint32    image_id,
           IFDBG(2) g_debug ("Add Duotone color data parasite");
           parasite = gimp_parasite_new (PSD_PARASITE_DUOTONE_DATA, 0,
                                         img_a->color_map_len, img_a->color_map);
-          gimp_image_attach_parasite (image_id, parasite);
+          gimp_image_attach_parasite (image, parasite);
           gimp_parasite_free (parasite);
         }
       g_free (img_a->color_map);
@@ -1064,7 +1064,7 @@ add_color_map (gint32    image_id,
 }
 
 static gint
-add_image_resources (gint32     image_id,
+add_image_resources (GimpImage *image,
                      PSDimage  *img_a,
                      FILE      *f,
                      gboolean  *resolution_loaded,
@@ -1101,7 +1101,7 @@ add_image_resources (gint32     image_id,
           return 0;
         }
 
-      if (load_image_resource (&res_a, image_id, img_a, f,
+      if (load_image_resource (&res_a, image, img_a, f,
                                resolution_loaded, profile_loaded,
                                error) < 0)
         return -1;
@@ -1111,7 +1111,7 @@ add_image_resources (gint32     image_id,
 }
 
 static gint
-add_layers (gint32     image_id,
+add_layers (GimpImage *image,
             PSDimage  *img_a,
             PSDlayer **lyr_a,
             FILE      *f,
@@ -1119,7 +1119,7 @@ add_layers (gint32     image_id,
 {
   PSDchannel          **lyr_chn;
   GArray               *parent_group_stack;
-  gint32                parent_group_id = -1;
+  GimpLayer            *parent_group = NULL;
   guchar               *pixels;
   guint16               alpha_chn;
   guint16               user_mask_chn;
@@ -1136,9 +1136,9 @@ add_layers (gint32     image_id,
   gint32                lm_w;                  /* Layer mask width */
   gint32                lm_h;                  /* Layer mask height */
   gint32                layer_size;
-  gint32                layer_id = -1;
-  gint32                mask_id = -1;
-  gint32                active_layer_id = -1;
+  GimpLayer            *layer        = NULL;
+  GimpLayerMask        *mask         = NULL;
+  GimpLayer            *active_layer = NULL;
   gint                  lidx;                  /* Layer index */
   gint                  cidx;                  /* Channel index */
   gint                  rowi;                  /* Row index */
@@ -1169,8 +1169,8 @@ add_layers (gint32     image_id,
     }
 
   /* set the root of the group hierarchy */
-  parent_group_stack = g_array_new (FALSE, FALSE, sizeof (gint32));
-  g_array_append_val (parent_group_stack, parent_group_id);
+  parent_group_stack = g_array_new (FALSE, FALSE, sizeof (GimpLayer *));
+  g_array_append_val (parent_group_stack, parent_group);
 
   for (lidx = 0; lidx < img_a->num_layers; ++lidx)
     {
@@ -1351,10 +1351,10 @@ add_layers (gint32     image_id,
           l_w = img_a->columns;
           l_h = img_a->rows;
           if (parent_group_stack->len > 0)
-            parent_group_id = g_array_index (parent_group_stack, gint32,
-                                             parent_group_stack->len - 1);
+            parent_group = g_array_index (parent_group_stack, GimpLayer *,
+                                          parent_group_stack->len - 1);
           else
-            parent_group_id = -1; /* root */
+            parent_group = NULL; /* root */
 
           IFDBG(3) g_debug ("Re-hash channel indices");
           for (cidx = 0; cidx < lyr_a[lidx]->num_channels; ++cidx)
@@ -1391,17 +1391,17 @@ add_layers (gint32     image_id,
                    * assemble the layer structure in a single pass
                    */
                   IFDBG(2) g_debug ("Create placeholder group layer");
-                  layer_id = gimp_layer_group_new (image_id);
+                  layer = gimp_layer_group_new (image);
                   /* add this group layer as the new parent */
-                  g_array_append_val (parent_group_stack, layer_id);
+                  g_array_append_val (parent_group_stack, layer);
                 }
               else /* group-type == 1 || group_type == 2 */
                 {
                   if (parent_group_stack->len)
                     {
-                      layer_id = g_array_index (parent_group_stack, gint32,
-                                                parent_group_stack->len - 1);
-                      IFDBG(2) g_debug ("End group layer id %d.", layer_id);
+                      layer = g_array_index (parent_group_stack, GimpLayer *,
+                                             parent_group_stack->len - 1);
+                      IFDBG(2) g_debug ("End group layer id %d.", gimp_item_get_id (GIMP_ITEM (layer)));
                       /* since the layers are stored in reverse, the group
                        * layer start marker actually means we're done with
                        * that layer group
@@ -1409,15 +1409,15 @@ add_layers (gint32     image_id,
                       g_array_remove_index (parent_group_stack,
                                             parent_group_stack->len - 1);
 
-                      gimp_drawable_offsets (layer_id, &l_x, &l_y);
+                      gimp_drawable_offsets (GIMP_DRAWABLE (layer), &l_x, &l_y);
 
-                      l_w = gimp_drawable_width  (layer_id);
-                      l_h = gimp_drawable_height (layer_id);
+                      l_w = gimp_drawable_width  (GIMP_DRAWABLE (layer));
+                      l_h = gimp_drawable_height (GIMP_DRAWABLE (layer));
                     }
                   else
                     {
                       IFDBG(1) g_debug ("WARNING: Unmatched group layer start marker.");
-                      layer_id = -1;
+                      layer = NULL;
                     }
                 }
             }
@@ -1439,19 +1439,19 @@ add_layers (gint32     image_id,
               image_type = get_gimp_image_type (img_a->base_type, TRUE);
               IFDBG(3) g_debug ("Layer type %d", image_type);
 
-              layer_id = gimp_layer_new (image_id, lyr_a[lidx]->name,
-                                         l_w, l_h, image_type,
-                                         100, GIMP_LAYER_MODE_NORMAL);
+              layer = gimp_layer_new (image, lyr_a[lidx]->name,
+                                      l_w, l_h, image_type,
+                                      100, GIMP_LAYER_MODE_NORMAL);
             }
 
-          if (layer_id != -1)
+          if (layer != NULL)
             {
               /* Set the layer name.  Note that we do this even for group-end
                * markers, to avoid having the default group name collide with
                * subsequent layers; the real group name is set by the group
                * start marker.
                */
-              gimp_item_set_name (layer_id, lyr_a[lidx]->name);
+              gimp_item_set_name (GIMP_ITEM (layer), lyr_a[lidx]->name);
 
               /* Set the layer properties (skip this for layer group end
                * markers; we set their properties when processing the start
@@ -1461,18 +1461,18 @@ add_layers (gint32     image_id,
                 {
                   /* Mode */
                   psd_to_gimp_blend_mode (lyr_a[lidx]->blend_mode, &mode_info);
-                  gimp_layer_set_mode (layer_id, mode_info.mode);
-                  gimp_layer_set_blend_space (layer_id, mode_info.blend_space);
-                  gimp_layer_set_composite_space (layer_id, mode_info.composite_space);
-                  gimp_layer_set_composite_mode (layer_id, mode_info.composite_mode);
+                  gimp_layer_set_mode (layer, mode_info.mode);
+                  gimp_layer_set_blend_space (layer, mode_info.blend_space);
+                  gimp_layer_set_composite_space (layer, mode_info.composite_space);
+                  gimp_layer_set_composite_mode (layer, mode_info.composite_mode);
 
                   /* Opacity */
-                  gimp_layer_set_opacity (layer_id,
+                  gimp_layer_set_opacity (layer,
                                           lyr_a[lidx]->opacity * 100.0 / 255.0);
 
                   /* Flags */
-                  gimp_layer_set_lock_alpha  (layer_id, lyr_a[lidx]->layer_flags.trans_prot);
-                  gimp_item_set_visible (layer_id, lyr_a[lidx]->layer_flags.visible);
+                  gimp_layer_set_lock_alpha  (layer, lyr_a[lidx]->layer_flags.trans_prot);
+                  gimp_item_set_visible (GIMP_ITEM (layer), lyr_a[lidx]->layer_flags.visible);
 #if 0
                   /* according to the spec, the 'irrelevant' flag indicates
                    * that the layer's "pixel data is irrelevant to the
@@ -1487,26 +1487,26 @@ add_layers (gint32     image_id,
                   if (lyr_a[lidx]->layer_flags.irrelevant &&
                       lyr_a[lidx]->group_type == 0)
                     {
-                      gimp_item_set_visible (layer_id, FALSE);
+                      gimp_item_set_visible (GIMP_ITEM (layer), FALSE);
                     }
 #endif
 
                   /* Position */
                   if (l_x != 0 || l_y != 0)
-                    gimp_layer_set_offsets (layer_id, l_x, l_y);
+                    gimp_layer_set_offsets (layer, l_x, l_y);
 
                   /* Color tag */
-                  gimp_item_set_color_tag (layer_id,
+                  gimp_item_set_color_tag (GIMP_ITEM (layer),
                                            psd_to_gimp_layer_color_tag (lyr_a[lidx]->color_tag[0]));
 
                   /* Tattoo */
                   if (lyr_a[lidx]->id)
-                    gimp_item_set_tattoo (layer_id, lyr_a[lidx]->id);
+                    gimp_item_set_tattoo (GIMP_ITEM (layer), lyr_a[lidx]->id);
 
                   /* For layer groups, expand or collapse the group */
                   if (lyr_a[lidx]->group_type != 0)
                     {
-                      gimp_item_set_expanded (layer_id,
+                      gimp_item_set_expanded (GIMP_ITEM (layer),
                                               lyr_a[lidx]->group_type == 1);
                     }
                 }
@@ -1514,7 +1514,7 @@ add_layers (gint32     image_id,
               /* Remember the active layer ID */
               if (lidx == img_a->layer_state)
                 {
-                  active_layer_id = layer_id;
+                  active_layer = layer;
                 }
 
               /* Set the layer data */
@@ -1524,7 +1524,7 @@ add_layers (gint32     image_id,
 
                   if (empty)
                     {
-                      gimp_drawable_fill (layer_id, GIMP_FILL_TRANSPARENT);
+                      gimp_drawable_fill (GIMP_DRAWABLE (layer), GIMP_FILL_TRANSPARENT);
                     }
                   else
                     {
@@ -1542,7 +1542,7 @@ add_layers (gint32     image_id,
                           g_free (lyr_chn[channel_idx[cidx]]->data);
                         }
 
-                      buffer = gimp_drawable_get_buffer (layer_id);
+                      buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
                       gegl_buffer_set (buffer,
                                        GEGL_RECTANGLE (0, 0,
                                                        gegl_buffer_get_width (buffer),
@@ -1561,14 +1561,14 @@ add_layers (gint32     image_id,
                     {
                       IFDBG(3) g_debug ("Create empty mask");
                       if (lyr_a[lidx]->layer_mask.def_color == 255)
-                        mask_id = gimp_layer_create_mask (layer_id,
-                                                          GIMP_ADD_MASK_WHITE);
+                        mask = gimp_layer_create_mask (layer,
+                                                       GIMP_ADD_MASK_WHITE);
                       else
-                        mask_id = gimp_layer_create_mask (layer_id,
-                                                          GIMP_ADD_MASK_BLACK);
-                      gimp_layer_add_mask (layer_id, mask_id);
-                      gimp_layer_set_apply_mask (layer_id,
-                        ! lyr_a[lidx]->layer_mask.mask_flags.disabled);
+                        mask = gimp_layer_create_mask (layer,
+                                                       GIMP_ADD_MASK_BLACK);
+                      gimp_layer_add_mask (layer, mask);
+                      gimp_layer_set_apply_mask (layer,
+                                                 ! lyr_a[lidx]->layer_mask.mask_flags.disabled);
                     }
                   else
                     {
@@ -1637,21 +1637,21 @@ add_layers (gint32     image_id,
                           IFDBG(3) g_debug ("Mask %d %d %d %d", lm_x, lm_y, lm_w, lm_h);
 
                           if (lyr_a[lidx]->layer_mask.def_color == 255)
-                            mask_id = gimp_layer_create_mask (layer_id,
-                                                              GIMP_ADD_MASK_WHITE);
+                            mask = gimp_layer_create_mask (layer,
+                                                           GIMP_ADD_MASK_WHITE);
                           else
-                            mask_id = gimp_layer_create_mask (layer_id,
-                                                              GIMP_ADD_MASK_BLACK);
+                            mask = gimp_layer_create_mask (layer,
+                                                           GIMP_ADD_MASK_BLACK);
 
-                          IFDBG(3) g_debug ("New layer mask %d", mask_id);
-                          gimp_layer_add_mask (layer_id, mask_id);
-                          buffer = gimp_drawable_get_buffer (mask_id);
+                          IFDBG(3) g_debug ("New layer mask %d", gimp_item_get_id (GIMP_ITEM (mask)));
+                          gimp_layer_add_mask (layer, mask);
+                          buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
                           gegl_buffer_set (buffer,
                                            GEGL_RECTANGLE (lm_x, lm_y, lm_w, lm_h),
                                            0, get_mask_format (img_a),
                                            pixels, GEGL_AUTO_ROWSTRIDE);
                           g_object_unref (buffer);
-                          gimp_layer_set_apply_mask (layer_id,
+                          gimp_layer_set_apply_mask (layer,
                                                      ! lyr_a[lidx]->layer_mask.mask_flags.disabled);
                         }
                       g_free (pixels);
@@ -1662,7 +1662,7 @@ add_layers (gint32     image_id,
                 if (lyr_a[lidx]->group_type == 0 || /* normal layer */
                     lyr_a[lidx]->group_type == 3    /* group layer end marker */)
                   {
-                    gimp_image_insert_layer (image_id, layer_id, parent_group_id, 0);
+                    gimp_image_insert_layer (image, layer, parent_group, 0);
                   }
             }
 
@@ -1679,14 +1679,14 @@ add_layers (gint32     image_id,
   g_array_free (parent_group_stack, FALSE);
 
   /* Set the active layer */
-  if (active_layer_id >= 0)
-    gimp_image_set_active_layer (image_id, active_layer_id);
+  if (active_layer >= 0)
+    gimp_image_set_active_layer (image, active_layer);
 
   return 0;
 }
 
 static gint
-add_merged_image (gint32     image_id,
+add_merged_image (GimpImage *image,
                   PSDimage  *img_a,
                   FILE      *f,
                   GError   **error)
@@ -1702,8 +1702,8 @@ add_merged_image (gint32     image_id,
   guint16              *rle_pack_len[MAX_CHANNELS];
   guint32               alpha_id;
   gint32                layer_size;
-  gint32                layer_id = -1;
-  gint32                channel_id = -1;
+  GimpLayer            *layer   = NULL;
+  GimpChannel          *channel = NULL;
   gint16                alpha_opacity;
   gint                  cidx;                  /* Channel index */
   gint                  rowi;                  /* Row index */
@@ -1855,14 +1855,14 @@ add_merged_image (gint32     image_id,
 
       /* Add background layer */
       IFDBG(2) g_debug ("Draw merged image");
-      layer_id = gimp_layer_new (image_id, _("Background"),
-                                 img_a->columns, img_a->rows,
-                                 image_type,
-                                 100,
-                                 gimp_image_get_default_new_layer_mode (image_id));
-      gimp_image_insert_layer (image_id, layer_id, -1, 0);
-
-      buffer = gimp_drawable_get_buffer (layer_id);
+      layer = gimp_layer_new (image, _("Background"),
+                              img_a->columns, img_a->rows,
+                              image_type,
+                              100,
+                              gimp_image_get_default_new_layer_mode (image));
+      gimp_image_insert_layer (image, layer, NULL, 0);
+
+      buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
       gegl_buffer_set (buffer,
                        GEGL_RECTANGLE (0, 0,
                                        gegl_buffer_get_width (buffer),
@@ -1923,7 +1923,7 @@ add_merged_image (gint32     image_id,
 
   /* ----- Draw extra alpha channels ----- */
   if (extra_channels                   /* Extra alpha channels */
-      && image_id > -1)
+      && image)
     {
       IFDBG(2) g_debug ("Add extra channels");
       pixels = g_malloc(0);
@@ -1979,15 +1979,15 @@ add_merged_image (gint32     image_id,
           cidx = base_channels + i;
           pixels = g_realloc (pixels, chn_a[cidx].columns * chn_a[cidx].rows * bps);
           memcpy (pixels, chn_a[cidx].data, chn_a[cidx].columns * chn_a[cidx].rows * bps);
-          channel_id = gimp_channel_new (image_id, alpha_name,
-                                         chn_a[cidx].columns, chn_a[cidx].rows,
-                                         alpha_opacity, &alpha_rgb);
-          gimp_image_insert_channel (image_id, channel_id, -1, 0);
+          channel = gimp_channel_new (image, alpha_name,
+                                      chn_a[cidx].columns, chn_a[cidx].rows,
+                                      alpha_opacity, &alpha_rgb);
+          gimp_image_insert_channel (image, channel, NULL, 0);
           g_free (alpha_name);
-          buffer = gimp_drawable_get_buffer (channel_id);
+          buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (channel));
           if (alpha_id)
-            gimp_item_set_tattoo (channel_id, alpha_id);
-          gimp_item_set_visible (channel_id, alpha_visible);
+            gimp_item_set_tattoo (GIMP_ITEM (channel), alpha_id);
+          gimp_item_set_visible (GIMP_ITEM (channel), alpha_visible);
           gegl_buffer_set (buffer,
                            GEGL_RECTANGLE (0, 0,
                                            gegl_buffer_get_width (buffer),
diff --git a/plug-ins/file-psd/psd-load.h b/plug-ins/file-psd/psd-load.h
index 42eb516315..66d1d228a5 100644
--- a/plug-ins/file-psd/psd-load.h
+++ b/plug-ins/file-psd/psd-load.h
@@ -22,11 +22,11 @@
 #define __PSD_LOAD_H__
 
 
-gint32  load_image (const gchar  *filename,
-                    gboolean      merged_image_only,
-                    gboolean     *resolution_loaded,
-                    gboolean     *profile_loaded,
-                    GError      **error);
+GimpImage * load_image (const gchar  *filename,
+                        gboolean      merged_image_only,
+                        gboolean     *resolution_loaded,
+                        gboolean     *profile_loaded,
+                        GError      **error);
 
 
 #endif /* __PSD_LOAD_H__ */
diff --git a/plug-ins/file-psd/psd-save.c b/plug-ins/file-psd/psd-save.c
index 087273bee4..18aeb5f6f7 100644
--- a/plug-ins/file-psd/psd-save.c
+++ b/plug-ins/file-psd/psd-save.c
@@ -109,8 +109,8 @@ typedef enum PsdLayerType
 
 typedef struct PsdLayer
 {
-  gint           id;
-  PSD_Layer_Type type;
+  GimpLayer      *layer;
+  PSD_Layer_Type  type;
 } PSD_Layer;
 
 typedef struct PsdImageData
@@ -122,14 +122,14 @@ typedef struct PsdImageData
 
   GimpImageBaseType  baseType;
 
-  gint32             merged_layer;/* Merged image,
+  GimpLayer         *merged_layer;/* Merged image,
                                      to be used for the image data section */
 
   gint               nChannels;   /* Number of user channels in the image */
-  gint32            *lChannels;   /* User channels in the image */
+  GList             *lChannels;   /* List of GimpChannel (User channels in the image) */
 
   gint               nLayers;     /* Number of layers in the image */
-  PSD_Layer         *lLayers;     /* Layer list */
+  GList             *lLayers;     /* List of PSD_Layer */
 } PSD_Image_Data;
 
 static PSD_Image_Data PSDImageData;
@@ -137,25 +137,25 @@ static PSD_Image_Data PSDImageData;
 /* Declare some local functions.
  */
 
-static const gchar * psd_lmode_layer      (gint32         idLayer,
+static const gchar * psd_lmode_layer      (GimpLayer     *layer,
                                            gboolean       section_divider);
 
 static void          reshuffle_cmap_write (guchar        *mapGimp);
 
 static void          save_header          (FILE          *fd,
-                                           gint32         image_id);
+                                           GimpImage     *image);
 
 static void          save_color_mode_data (FILE          *fd,
-                                           gint32         image_id);
+                                           GimpImage     *image);
 
 static void          save_resources       (FILE          *fd,
-                                           gint32         image_id);
+                                           GimpImage     *image);
 
 static void          save_layer_and_mask  (FILE          *fd,
-                                           gint32         image_id);
+                                           GimpImage     *image);
 
 static void          save_data            (FILE          *fd,
-                                           gint32         image_id);
+                                           GimpImage     *image);
 
 static void          xfwrite              (FILE          *fd,
                                            gconstpointer  buf,
@@ -189,30 +189,30 @@ static void          write_datablock_luni (FILE          *fd,
 
 
 static void          write_pixel_data     (FILE          *fd,
-                                           gint32         drawableID,
+                                           GimpDrawable  *drawable,
                                            glong         *ChanLenPosition,
                                            gint32         rowlenOffset,
                                            gboolean       write_mask);
 
-static gint32        create_merged_image  (gint32         imageID);
+static GimpLayer   * create_merged_image  (GimpImage     *image);
 
-static const Babl  * get_pixel_format     (gint32         drawableID);
-static const Babl  * get_channel_format   (gint32         drawableID);
-static const Babl  * get_mask_format      (gint32         drawableID);
+static const Babl  * get_pixel_format     (GimpDrawable  *drawable);
+static const Babl  * get_channel_format   (GimpDrawable  *drawable);
+static const Babl  * get_mask_format      (GimpLayerMask *mask);
 
-static PSD_Layer   * image_get_all_layers (gint32         imageID,
+static GList       * image_get_all_layers (GimpImage     *image,
                                            gint          *n_layers);
 
 static const gchar *
-psd_lmode_layer (gint32   idLayer,
-                 gboolean section_divider)
+psd_lmode_layer (GimpLayer *layer,
+                 gboolean   section_divider)
 {
   LayerModeInfo mode_info;
 
-  mode_info.mode            = gimp_layer_get_mode (idLayer);
-  mode_info.blend_space     = gimp_layer_get_blend_space (idLayer);
-  mode_info.composite_space = gimp_layer_get_composite_space (idLayer);
-  mode_info.composite_mode  = gimp_layer_get_composite_mode (idLayer);
+  mode_info.mode            = gimp_layer_get_mode (layer);
+  mode_info.blend_space     = gimp_layer_get_blend_space (layer);
+  mode_info.composite_space = gimp_layer_get_composite_space (layer);
+  mode_info.composite_mode  = gimp_layer_get_composite_mode (layer);
 
   /* pass-through groups use normal mode in their layer record; the
    * pass-through mode is specified in their section divider resource.
@@ -516,8 +516,8 @@ reshuffle_cmap_write (guchar *mapGimp)
 }
 
 static void
-save_header (FILE   *fd,
-             gint32  image_id)
+save_header (FILE      *fd,
+             GimpImage *image)
 {
   IFDBG printf (" Function: save_header\n");
   IFDBG printf ("\tRows: %d\n", PSDImageData.image_height);
@@ -531,7 +531,7 @@ save_header (FILE   *fd,
   write_gint16 (fd, 0, "reserved 1");      /* and 2 bytes for a short */
   write_gint16 (fd, (PSDImageData.nChannels +
                      nChansLayer (PSDImageData.baseType,
-                     gimp_drawable_has_alpha (PSDImageData.merged_layer), 0)),
+                     gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)), 0)),
                 "channels");
   write_gint32 (fd, PSDImageData.image_height, "rows");
   write_gint32 (fd, PSDImageData.image_width, "columns");
@@ -540,8 +540,8 @@ save_header (FILE   *fd,
 }
 
 static void
-save_color_mode_data (FILE   *fd,
-                      gint32  image_id)
+save_color_mode_data (FILE      *fd,
+                      GimpImage *image)
 {
   guchar *cmap;
   guchar *cmap_modified;
@@ -555,7 +555,7 @@ save_color_mode_data (FILE   *fd,
     case GIMP_INDEXED:
       IFDBG printf ("\tImage type: INDEXED\n");
 
-      cmap = gimp_image_get_colormap (image_id, &nColors);
+      cmap = gimp_image_get_colormap (image, &nColors);
       IFDBG printf ("\t\tLength of colormap returned by gimp_image_get_colormap: %d\n", nColors);
 
       if (nColors == 0)
@@ -597,12 +597,13 @@ save_color_mode_data (FILE   *fd,
 }
 
 static void
-save_resources (FILE   *fd,
-                gint32  image_id)
+save_resources (FILE      *fd,
+                GimpImage *image)
 {
+  GList        *iter;
   gint          i;
   gchar        *fileName;            /* Image file name */
-  gint32        idActLayer;          /* Id of the active layer */
+  GimpLayer    *ActLayer;            /* The active layer */
   guint         nActiveLayer = 0;    /* Number of the active layer */
   gboolean      ActiveLayerPresent;  /* TRUE if there's an active layer */
 
@@ -620,17 +621,17 @@ save_resources (FILE   *fd,
 
   /* Get the image title from its filename */
 
-  fileName = gimp_image_get_filename (image_id);
+  fileName = gimp_image_get_filename (image);
   IFDBG printf ("\tImage title: %s\n", fileName);
 
   /* Get the active layer number id */
 
-  idActLayer = gimp_image_get_active_layer (image_id);
-  IFDBG printf ("\tCurrent layer id: %d\n", idActLayer);
+  ActLayer = gimp_image_get_active_layer (image);
+  IFDBG printf ("\tCurrent layer id: %d\n", gimp_item_get_id (GIMP_ITEM (ActLayer)));
 
   ActiveLayerPresent = FALSE;
-  for (i = 0; i < PSDImageData.nLayers; i++)
-    if (idActLayer == PSDImageData.lLayers[i].id)
+  for (iter = PSDImageData.lLayers, i = 0; iter; iter = iter->next, i++)
+    if (ActLayer == ((PSD_Layer *) iter->data)->layer)
       {
         nActiveLayer = PSDImageData.nLayers - i - 1;
         ActiveLayerPresent = TRUE;
@@ -656,7 +657,7 @@ save_resources (FILE   *fd,
   /* --------------- Write Channel names --------------- */
 
   if (PSDImageData.nChannels > 0 ||
-      gimp_drawable_has_alpha (PSDImageData.merged_layer))
+      gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)))
     {
       xfwrite (fd, "8BIM", 4, "imageresources signature");
       write_gint16 (fd, 0x03EE, "0x03EE Id"); /* 1006 */
@@ -671,15 +672,15 @@ save_resources (FILE   *fd,
     /* Write all strings */
 
     /* if the merged_image contains transparency, write a name for it first */
-    if (gimp_drawable_has_alpha (PSDImageData.merged_layer))
+    if (gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)))
       write_string (fd, "Transparency", "channel name");
 
-    for (i = PSDImageData.nChannels - 1; i >= 0; i--)
-    {
-      char *chName = gimp_item_get_name (PSDImageData.lChannels[i]);
-      write_string (fd, chName, "channel name");
-      g_free (chName);
-    }
+    for (iter = g_list_last (PSDImageData.lChannels); iter; iter = iter->prev)
+      {
+        char *chName = gimp_item_get_name (iter->data);
+        write_string (fd, chName, "channel name");
+        g_free (chName);
+      }
     /* Calculate and write actual resource's length */
 
     eof_pos = ftell (fd);
@@ -700,13 +701,13 @@ save_resources (FILE   *fd,
   }
 
   /* --------------- Write Guides --------------- */
-  if (gimp_image_find_next_guide(image_id, 0))
+  if (gimp_image_find_next_guide (image, 0))
     {
       gint n_guides = 0;
       gint guide_id =0;
 
       /* Count the guides */
-      while ((guide_id = gimp_image_find_next_guide(image_id, guide_id)))
+      while ((guide_id = gimp_image_find_next_guide(image, guide_id)))
         n_guides++;
 
       xfwrite (fd, "8BIM", 4, "imageresources signature");
@@ -721,12 +722,12 @@ save_resources (FILE   *fd,
       write_gint32 (fd, n_guides, "number of guides");
 
       /* write the guides */
-      while ((guide_id = gimp_image_find_next_guide(image_id, guide_id)))
+      while ((guide_id = gimp_image_find_next_guide (image, guide_id)))
         {
           gchar orientation;
           gint32 position;
-          orientation = gimp_image_get_guide_orientation(image_id, guide_id);
-          position    = 32 * gimp_image_get_guide_position(image_id, guide_id);
+          orientation = gimp_image_get_guide_orientation (image, guide_id);
+          position    = 32 * gimp_image_get_guide_position (image, guide_id);
           orientation ^= 1; /* in the psd vert =0 , horiz = 1 */
           write_gint32 (fd, position, "Position of guide");
           write_gchar (fd, orientation, "Orientation of guide");
@@ -746,8 +747,8 @@ save_resources (FILE   *fd,
     GimpUnit g_unit;
     gint16 psd_unit;
 
-    g_unit = gimp_image_get_unit (image_id);
-    gimp_image_get_resolution (image_id, &xres, &yres);
+    g_unit = gimp_image_get_unit (image);
+    gimp_image_get_resolution (image, &xres, &yres);
 
     if (g_unit == GIMP_UNIT_MM)
       {
@@ -799,7 +800,7 @@ save_resources (FILE   *fd,
   {
     GimpColorProfile *profile;
 
-    profile = gimp_image_get_effective_color_profile (image_id);
+    profile = gimp_image_get_effective_color_profile (image);
 
     if (profile)
       {
@@ -862,29 +863,30 @@ get_compress_channel_data (guchar  *channel_data,
 }
 
 static void
-save_layer_and_mask (FILE   *fd,
-                     gint32  image_id)
+save_layer_and_mask (FILE      *fd,
+                     GimpImage *image)
 {
-  gint          i,j;
-  gint          idChannel;
-  gint          offset_x;               /* X offset for each layer */
-  gint          offset_y;               /* Y offset for each layer */
-  gint32        layerWidth;             /* Width of each layer */
-  gint32        layerHeight;            /* Height of each layer */
-  const gchar  *blendMode;              /* Blending mode of the layer */
-  guchar        layerOpacity;           /* Opacity of the layer */
-  guchar        flags;                  /* Layer flags */
-  gint          nChannelsLayer;         /* Number of channels of a layer */
-  gint32        ChanSize;               /* Data length for a channel */
-  gchar        *layerName;              /* Layer name */
-  gint          mask;                   /* Layer mask */
-  gint          depth;                  /* Layer group nesting depth */
-
-  glong         eof_pos;                /* Position: End of file */
-  glong         ExtraDataPos;           /* Position: Extra data length */
-  glong         LayerMaskPos;           /* Position: Layer & Mask section length */
-  glong         LayerInfoPos;           /* Position: Layer info section length*/
-  glong       **ChannelLengthPos;       /* Position: Channel length */
+  gint           i,j;
+  gint           idChannel;
+  gint           offset_x;               /* X offset for each layer */
+  gint           offset_y;               /* Y offset for each layer */
+  gint32         layerWidth;             /* Width of each layer */
+  gint32         layerHeight;            /* Height of each layer */
+  const gchar   *blendMode;              /* Blending mode of the layer */
+  guchar         layerOpacity;           /* Opacity of the layer */
+  guchar         flags;                  /* Layer flags */
+  gint           nChannelsLayer;         /* Number of channels of a layer */
+  gint32         ChanSize;               /* Data length for a channel */
+  gchar         *layerName;              /* Layer name */
+  GimpLayerMask *mask;                   /* Layer mask */
+  gint           depth;                  /* Layer group nesting depth */
+
+  glong          eof_pos;                /* Position: End of file */
+  glong          ExtraDataPos;           /* Position: Extra data length */
+  glong          LayerMaskPos;           /* Position: Layer & Mask section length */
+  glong          LayerInfoPos;           /* Position: Layer info section length*/
+  glong        **ChannelLengthPos;       /* Position: Channel length */
+  GList         *iter;
 
 
   IFDBG printf (" Function: save_layer_and_mask\n");
@@ -905,7 +907,7 @@ save_layer_and_mask (FILE   *fd,
 
   /* Layer structure section */
 
-  if (gimp_drawable_has_alpha (PSDImageData.merged_layer))
+  if (gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)))
     write_gint16 (fd, -PSDImageData.nLayers, "Layer structure count");
   else
     write_gint16 (fd, PSDImageData.nLayers, "Layer structure count");
@@ -915,15 +917,16 @@ save_layer_and_mask (FILE   *fd,
   /* Layer records section */
   /* GIMP layers must be written in reverse order */
 
-  for (i = PSDImageData.nLayers - 1; i >= 0; i--)
+  for (iter = g_list_last (PSDImageData.lLayers), i = PSDImageData.nLayers; iter; iter = iter->prev, i--)
     {
-      gint hasMask = 0;
+      PSD_Layer *psd_layer = (PSD_Layer *) iter->data;
+      gint       hasMask = 0;
 
-      if (PSDImageData.lLayers[i].type == PSD_LAYER_TYPE_LAYER)
+      if (psd_layer->type == PSD_LAYER_TYPE_LAYER)
         {
-          gimp_drawable_offsets (PSDImageData.lLayers[i].id, &offset_x, &offset_y);
-          layerWidth = gimp_drawable_width (PSDImageData.lLayers[i].id);
-          layerHeight = gimp_drawable_height (PSDImageData.lLayers[i].id);
+          gimp_drawable_offsets (GIMP_DRAWABLE (psd_layer->layer), &offset_x, &offset_y);
+          layerWidth = gimp_drawable_width (GIMP_DRAWABLE (psd_layer->layer));
+          layerHeight = gimp_drawable_height (GIMP_DRAWABLE (psd_layer->layer));
         }
       else
         {
@@ -941,7 +944,7 @@ save_layer_and_mask (FILE   *fd,
         {
           const gchar *type;
 
-          switch (PSDImageData.lLayers[i].type)
+          switch (psd_layer->type)
             {
             case PSD_LAYER_TYPE_LAYER:       type = "normal layer"; break;
             case PSD_LAYER_TYPE_GROUP_START: type = "group start marker"; break;
@@ -960,10 +963,10 @@ save_layer_and_mask (FILE   *fd,
       write_gint32 (fd, offset_y + layerHeight, "Layer bottom");
       write_gint32 (fd, offset_x + layerWidth,  "Layer right");
 
-      hasMask = (PSDImageData.lLayers[i].type != PSD_LAYER_TYPE_GROUP_END &&
-                 gimp_layer_get_mask (PSDImageData.lLayers[i].id) != -1);
+      hasMask = (psd_layer->type != PSD_LAYER_TYPE_GROUP_END &&
+                 gimp_layer_get_mask (psd_layer->layer) != NULL);
       nChannelsLayer = nChansLayer (PSDImageData.baseType,
-                                    gimp_drawable_has_alpha (PSDImageData.lLayers[i].id),
+                                    gimp_drawable_has_alpha (GIMP_DRAWABLE (psd_layer->layer)),
                                     hasMask);
 
 
@@ -978,7 +981,7 @@ save_layer_and_mask (FILE   *fd,
 
       for (j = 0; j < nChannelsLayer; j++)
         {
-          if (gimp_drawable_has_alpha (PSDImageData.lLayers[i].id))
+          if (gimp_drawable_has_alpha (GIMP_DRAWABLE (psd_layer->layer)))
             idChannel = j - 1;
           else
             idChannel = j;
@@ -1000,11 +1003,11 @@ save_layer_and_mask (FILE   *fd,
 
       xfwrite (fd, "8BIM", 4, "blend mode signature");
 
-      blendMode = psd_lmode_layer (PSDImageData.lLayers[i].id, FALSE);
+      blendMode = psd_lmode_layer (psd_layer->layer, FALSE);
       IFDBG printf ("\t\tBlend mode: %s\n", blendMode);
       xfwrite (fd, blendMode, 4, "blend mode key");
 
-      layerOpacity = RINT ((gimp_layer_get_opacity (PSDImageData.lLayers[i].id) * 255.0) / 100.0);
+      layerOpacity = RINT ((gimp_layer_get_opacity (psd_layer->layer) * 255.0) / 100.0);
       IFDBG printf ("\t\tOpacity: %u\n", layerOpacity);
       write_gchar (fd, layerOpacity, "Opacity");
 
@@ -1012,9 +1015,9 @@ save_layer_and_mask (FILE   *fd,
       write_gchar (fd, 0, "Clipping");
 
       flags = 0;
-      if (gimp_layer_get_lock_alpha (PSDImageData.lLayers[i].id)) flags |= 1;
-      if (! gimp_item_get_visible (PSDImageData.lLayers[i].id)) flags |= 2;
-      if (PSDImageData.lLayers[i].type != PSD_LAYER_TYPE_LAYER) flags |= 0x18;
+      if (gimp_layer_get_lock_alpha (psd_layer->layer)) flags |= 1;
+      if (! gimp_item_get_visible (GIMP_ITEM (psd_layer->layer))) flags |= 2;
+      if (psd_layer->type != PSD_LAYER_TYPE_LAYER) flags |= 0x18;
       IFDBG printf ("\t\tFlags: %u\n", flags);
       write_gchar (fd, flags, "Flags");
 
@@ -1032,13 +1035,13 @@ save_layer_and_mask (FILE   *fd,
           gint     maskHeight;
           gboolean apply;
 
-          mask = gimp_layer_get_mask (PSDImageData.lLayers[i].id);
+          mask = gimp_layer_get_mask (psd_layer->layer);
 
-          gimp_drawable_offsets (mask, &maskOffset_x, &maskOffset_y);
+          gimp_drawable_offsets (GIMP_DRAWABLE (mask), &maskOffset_x, &maskOffset_y);
 
-          maskWidth  = gimp_drawable_width  (mask);
-          maskHeight = gimp_drawable_height (mask);
-          apply      = gimp_layer_get_apply_mask (PSDImageData.lLayers[i].id);
+          maskWidth  = gimp_drawable_width  (GIMP_DRAWABLE (mask));
+          maskHeight = gimp_drawable_height (GIMP_DRAWABLE (mask));
+          apply      = gimp_layer_get_apply_mask (psd_layer->layer);
 
           IFDBG printf ("\t\tLayer mask size: %d\n", 20);
           write_gint32 (fd, 20,                        "Layer mask size");
@@ -1064,8 +1067,8 @@ save_layer_and_mask (FILE   *fd,
       write_gint32 (fd, 0, "Layer blending size");
       IFDBG printf ("\t\tLayer blending size: %d\n", 0);
 
-      if (PSDImageData.lLayers[i].type != PSD_LAYER_TYPE_GROUP_END)
-        layerName = gimp_item_get_name (PSDImageData.lLayers[i].id);
+      if (psd_layer->type != PSD_LAYER_TYPE_GROUP_END)
+        layerName = gimp_item_get_name (GIMP_ITEM (psd_layer->layer));
       else
         layerName = g_strdup ("</Layer group>");
       write_pascalstring (fd, layerName, 4, "layer name");
@@ -1073,7 +1076,7 @@ save_layer_and_mask (FILE   *fd,
 
       /* Additional layer information blocks */
       /* Unicode layer name */
-      write_datablock_luni(fd, layerName, "luni extra data block");
+      write_datablock_luni (fd, layerName, "luni extra data block");
 
       g_free (layerName);
 
@@ -1081,23 +1084,23 @@ save_layer_and_mask (FILE   *fd,
       xfwrite (fd, "8BIMlclr", 8, "sheet color signature");
       write_gint32 (fd, 8, "sheet color size");
       write_gint16 (fd,
-                    gimp_to_psd_layer_color_tag(gimp_item_get_color_tag(PSDImageData.lLayers[i].id)),
+                    gimp_to_psd_layer_color_tag (gimp_item_get_color_tag (GIMP_ITEM (psd_layer->layer))),
                     "sheet color code");
       write_gint16 (fd, 0, "sheet color unused value");
       write_gint16 (fd, 0, "sheet color unused value");
       write_gint16 (fd, 0, "sheet color unused value");
 
       /* Group layer section divider */
-      if (PSDImageData.lLayers[i].type != PSD_LAYER_TYPE_LAYER)
+      if (psd_layer->type != PSD_LAYER_TYPE_LAYER)
         {
           gint32 size;
           gint32 type;
 
           size = 12;
 
-          if (PSDImageData.lLayers[i].type == PSD_LAYER_TYPE_GROUP_START)
+          if (psd_layer->type == PSD_LAYER_TYPE_GROUP_START)
             {
-              type = gimp_item_get_expanded (PSDImageData.lLayers[i].id) ? 1 : 2;
+              type = gimp_item_get_expanded (GIMP_ITEM (psd_layer->layer)) ? 1 : 2;
 
               depth--;
             }
@@ -1108,7 +1111,7 @@ save_layer_and_mask (FILE   *fd,
               depth++;
             }
 
-          blendMode = psd_lmode_layer (PSDImageData.lLayers[i].id, TRUE);
+          blendMode = psd_lmode_layer (psd_layer->layer, TRUE);
 
           if (type < 3 || depth <= 5)
             {
@@ -1146,13 +1149,15 @@ save_layer_and_mask (FILE   *fd,
   /* Channel image data section */
   /* Gimp layers must be written in reverse order */
 
-  for (i = PSDImageData.nLayers - 1; i >= 0; i--)
+  for (iter = g_list_last (PSDImageData.lLayers), i = PSDImageData.nLayers; iter; iter = iter->prev, i--)
     {
+      PSD_Layer *psd_layer = (PSD_Layer *) iter->data;
+
       gimp_progress_update ((PSDImageData.nLayers - i - 1.0) / (PSDImageData.nLayers + 1.0));
 
       IFDBG printf ("\t\tWriting pixel data for layer slot %d\n", i);
-      write_pixel_data (fd, PSDImageData.lLayers[i].id, ChannelLengthPos[i], 0,
-                        PSDImageData.lLayers[i].type != PSD_LAYER_TYPE_GROUP_END);
+      write_pixel_data (fd, GIMP_DRAWABLE (psd_layer->layer), ChannelLengthPos[i], 0,
+                        psd_layer->type != PSD_LAYER_TYPE_GROUP_END);
       g_free (ChannelLengthPos[i]);
     }
 
@@ -1179,54 +1184,54 @@ save_layer_and_mask (FILE   *fd,
 }
 
 static void
-write_pixel_data (FILE     *fd,
-                  gint32    drawableID,
-                  glong    *ChanLenPosition,
-                  gint32    ltable_offset,
-                  gboolean  write_mask)
+write_pixel_data (FILE         *fd,
+                  GimpDrawable *drawable,
+                  glong        *ChanLenPosition,
+                  gint32        ltable_offset,
+                  gboolean      write_mask)
 {
-  GeglBuffer   *buffer = gimp_drawable_get_buffer (drawableID);
-  const Babl   *format;
-  gint32        maskID;
-  gint32        tile_height = gimp_tile_height ();
-  gint32        height = gegl_buffer_get_height (buffer);
-  gint32        width  = gegl_buffer_get_width (buffer);
-  gint32        bytes;
-  gint32        colors;
-  gint32        y;
-  gint32        len;                  /* Length of compressed data */
-  gint16       *LengthsTable;         /* Lengths of every compressed row */
-  guchar       *rledata;              /* Compressed data from a region */
-  guchar       *data;                 /* Temporary copy of pixel data */
-  glong         length_table_pos;     /* position in file of the length table */
-  int           i, j;
+  GeglBuffer    *buffer = gimp_drawable_get_buffer (drawable);
+  const Babl    *format;
+  GimpLayerMask *mask;
+  gint32         tile_height = gimp_tile_height ();
+  gint32         height = gegl_buffer_get_height (buffer);
+  gint32         width  = gegl_buffer_get_width (buffer);
+  gint32         bytes;
+  gint32         colors;
+  gint32         y;
+  gint32         len;                  /* Length of compressed data */
+  gint16        *LengthsTable;         /* Lengths of every compressed row */
+  guchar        *rledata;              /* Compressed data from a region */
+  guchar        *data;                 /* Temporary copy of pixel data */
+  glong          length_table_pos;     /* position in file of the length table */
+  int            i, j;
 
   IFDBG printf (" Function: write_pixel_data, drw %d, lto %d\n",
-                drawableID, ltable_offset);
+                gimp_item_get_id (GIMP_ITEM (drawable)), ltable_offset);
 
   if (write_mask)
-    maskID = gimp_layer_get_mask (drawableID);
+    mask = gimp_layer_get_mask (GIMP_LAYER (drawable));
   else
-    maskID = -1;
+    mask = NULL;
 
   /* groups have empty channel data, but may have a mask */
-  if (gimp_item_is_group (drawableID) && maskID == -1)
+  if (gimp_item_is_group (GIMP_ITEM (drawable)) && mask == NULL)
     {
       width  = 0;
       height = 0;
     }
 
-  if (gimp_item_is_channel (drawableID))
-    format = get_channel_format (drawableID);
+  if (gimp_item_is_channel (GIMP_ITEM (drawable)))
+    format = get_channel_format (drawable);
   else
-    format = get_pixel_format (drawableID);
+    format = get_pixel_format (drawable);
 
   bytes = babl_format_get_bytes_per_pixel (format);
 
   colors = bytes;
 
-  if (gimp_drawable_has_alpha  (drawableID) &&
-      ! gimp_drawable_is_indexed (drawableID))
+  if (gimp_drawable_has_alpha  (drawable) &&
+      ! gimp_drawable_is_indexed (drawable))
     colors -= 1;
 
   LengthsTable = g_new (gint16, height);
@@ -1236,7 +1241,7 @@ write_pixel_data (FILE     *fd,
   data = g_new (guchar, MIN (height, tile_height) * width * bytes);
 
   /* groups have empty channel data */
-  if (gimp_item_is_group (drawableID))
+  if (gimp_item_is_group (GIMP_ITEM (drawable)))
     {
       width  = 0;
       height = 0;
@@ -1320,10 +1325,10 @@ write_pixel_data (FILE     *fd,
     }
 
   /* Write layer mask, as last channel, id -2 */
-  if (maskID != -1)
+  if (mask != NULL)
     {
-      GeglBuffer *mbuffer = gimp_drawable_get_buffer (maskID);
-      const Babl *mformat = get_mask_format(maskID);
+      GeglBuffer *mbuffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
+      const Babl *mformat = get_mask_format (mask);
 
       width  = gegl_buffer_get_width (buffer);
       height = gegl_buffer_get_height (buffer);
@@ -1403,23 +1408,24 @@ write_pixel_data (FILE     *fd,
 }
 
 static void
-save_data (FILE   *fd,
-           gint32  image_id)
+save_data (FILE      *fd,
+           GimpImage *image)
 {
-  gint ChanCount;
-  gint i, j;
-  gint32 imageHeight;                   /* Height of image */
-  glong offset;                         /* offset in file of rle lengths */
-  gint chan;
+  GList  *iter;
+  gint    ChanCount;
+  gint    i, j;
+  gint32  imageHeight;                   /* Height of image */
+  glong   offset;                         /* offset in file of rle lengths */
+  gint    chan;
 
   IFDBG printf (" Function: save_data\n");
 
   ChanCount = (PSDImageData.nChannels +
                nChansLayer (PSDImageData.baseType,
-                            gimp_drawable_has_alpha (PSDImageData.merged_layer),
+                            gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)),
                             0));
 
-  imageHeight = gimp_image_height (image_id);
+  imageHeight = gimp_image_height (image);
 
   write_gint16 (fd, 1, "RLE compression");
 
@@ -1432,36 +1438,36 @@ save_data (FILE   *fd,
       write_gint16 (fd, 0, "junk line lengths");
 
   IFDBG printf ("\t\tWriting compressed image data\n");
-  write_pixel_data (fd, PSDImageData.merged_layer,
+  write_pixel_data (fd, GIMP_DRAWABLE (PSDImageData.merged_layer),
                     NULL, offset, FALSE);
 
   chan = nChansLayer (PSDImageData.baseType,
-                      gimp_drawable_has_alpha(PSDImageData.merged_layer), 0);
+                      gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)), 0);
 
-  for (i = PSDImageData.nChannels - 1; i >= 0; i--)
+  for (iter = g_list_last (PSDImageData.lChannels), i = PSDImageData.nChannels - 1; iter; iter = iter->prev, 
i--)
     {
       IFDBG printf ("\t\tWriting compressed channel data for channel %d\n",
                     i);
-      write_pixel_data (fd, PSDImageData.lChannels[i], NULL,
+      write_pixel_data (fd, iter->data, NULL,
                         offset + 2*imageHeight*chan, FALSE); //check how imgs are channels here
       chan++;
     }
 }
 
-static gint32
-create_merged_image (gint32 image_id)
+static GimpLayer *
+create_merged_image (GimpImage *image)
 {
-  gint32  projection;
+  GimpLayer *projection;
 
-  projection = gimp_layer_new_from_visible (image_id, image_id, "psd-save");
+  projection = gimp_layer_new_from_visible (image, image, "psd-save");
 
-  if (! gimp_drawable_has_alpha (projection))
+  if (! gimp_drawable_has_alpha (GIMP_DRAWABLE (projection)))
     return projection;
 
-  if (gimp_image_base_type (image_id) != GIMP_INDEXED)
+  if (gimp_image_base_type (image) != GIMP_INDEXED)
     {
-      GeglBuffer         *buffer             = gimp_drawable_get_buffer (projection);
-      const Babl         *format             = get_pixel_format (projection);
+      GeglBuffer         *buffer             = gimp_drawable_get_buffer (GIMP_DRAWABLE (projection));
+      const Babl         *format             = get_pixel_format (GIMP_DRAWABLE (projection));
       gboolean            transparency_found = FALSE;
       gint                bpp                = babl_format_get_bytes_per_pixel (format);
       GeglBufferIterator *iter;
@@ -1507,28 +1513,28 @@ create_merged_image (gint32 image_id)
 }
 
 static void
-get_image_data (gint32 image_id)
+get_image_data (GimpImage *image)
 {
   IFDBG printf (" Function: get_image_data\n");
 
   PSDImageData.compression = FALSE;
 
-  PSDImageData.image_height = gimp_image_height (image_id);
+  PSDImageData.image_height = gimp_image_height (image);
   IFDBG printf ("\tGot number of rows: %d\n", PSDImageData.image_height);
 
-  PSDImageData.image_width = gimp_image_width (image_id);
+  PSDImageData.image_width = gimp_image_width (image);
   IFDBG printf ("\tGot number of cols: %d\n", PSDImageData.image_width);
 
-  PSDImageData.baseType = gimp_image_base_type (image_id);
+  PSDImageData.baseType = gimp_image_base_type (image);
   IFDBG printf ("\tGot base type: %d\n", PSDImageData.baseType);
 
-  PSDImageData.merged_layer = create_merged_image (image_id);
+  PSDImageData.merged_layer = create_merged_image (image);
 
-  PSDImageData.lChannels = gimp_image_get_channels (image_id,
-                                                    &PSDImageData.nChannels);
+  PSDImageData.lChannels = gimp_image_get_channels (image);
+  PSDImageData.nChannels = g_list_length (PSDImageData.lChannels);
   IFDBG printf ("\tGot number of channels: %d\n", PSDImageData.nChannels);
 
-  PSDImageData.lLayers = image_get_all_layers (image_id,
+  PSDImageData.lLayers = image_get_all_layers (image,
                                                &PSDImageData.nLayers);
   IFDBG printf ("\tGot number of layers: %d\n", PSDImageData.nLayers);
 }
@@ -1538,26 +1544,26 @@ clear_image_data (void)
 {
   IFDBG printf (" Function: clear_image_data\n");
 
-  g_free (PSDImageData.lChannels);
+  g_list_free (PSDImageData.lChannels);
   PSDImageData.lChannels = NULL;
 
-  g_free (PSDImageData.lLayers);
+  g_list_free (PSDImageData.lLayers);
   PSDImageData.lLayers = NULL;
 }
 
 gboolean
 save_image (const gchar  *filename,
-            gint32        image_id,
+            GimpImage    *image,
             GError      **error)
 {
   FILE       *fd;
-  gint        i;
   GeglBuffer *buffer;
+  GList      *iter;
 
   IFDBG printf (" Function: save_image\n");
 
-  if (gimp_image_width (image_id) > 30000 ||
-      gimp_image_height (image_id) > 30000)
+  if (gimp_image_width (image) > 30000 ||
+      gimp_image_height (image) > 30000)
     {
       g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
                    _("Unable to export '%s'.  The PSD file format does not "
@@ -1570,14 +1576,16 @@ save_image (const gchar  *filename,
   gimp_progress_init_printf (_("Exporting '%s'"),
                              gimp_filename_to_utf8 (filename));
 
-  get_image_data (image_id);
+  get_image_data (image);
 
   /* Need to check each of the layers size individually also */
-  for (i = 0; i < PSDImageData.nLayers; i++)
+  for (iter = PSDImageData.lLayers; iter; iter = iter->next)
     {
-      if (PSDImageData.lLayers[i].type == PSD_LAYER_TYPE_LAYER)
+      PSD_Layer *layer = iter->data;
+
+      if (layer->type == PSD_LAYER_TYPE_LAYER)
         {
-          buffer = gimp_drawable_get_buffer (PSDImageData.lLayers[i].id);
+          buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer->layer));
           if (gegl_buffer_get_width (buffer) > 30000 || gegl_buffer_get_height (buffer) > 30000)
             {
               g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
@@ -1605,24 +1613,24 @@ save_image (const gchar  *filename,
   IFDBG g_print ("\tFile '%s' has been opened\n",
                  gimp_filename_to_utf8 (filename));
 
-  save_header (fd, image_id);
-  save_color_mode_data (fd, image_id);
-  save_resources (fd, image_id);
+  save_header (fd, image);
+  save_color_mode_data (fd, image);
+  save_resources (fd, image);
 
   /* PSD format does not support layers in indexed images */
 
   if (PSDImageData.baseType == GIMP_INDEXED)
     write_gint32 (fd, 0, "layers info section length");
   else
-    save_layer_and_mask (fd, image_id);
+    save_layer_and_mask (fd, image);
 
   /* If this is an indexed image, write now channel and layer info */
 
-  save_data (fd, image_id);
+  save_data (fd, image);
 
   /* Delete merged image now */
 
-  gimp_item_delete (PSDImageData.merged_layer);
+  gimp_item_delete (GIMP_ITEM (PSDImageData.merged_layer));
 
   clear_image_data ();
 
@@ -1636,11 +1644,11 @@ save_image (const gchar  *filename,
 }
 
 static const Babl *
-get_pixel_format (gint32 drawableID)
+get_pixel_format (GimpDrawable *drawable)
 {
   const Babl *format;
 
-  switch (gimp_drawable_type (drawableID))
+  switch (gimp_drawable_type (drawable))
     {
     case GIMP_GRAY_IMAGE:
       format = babl_format ("Y' u8");
@@ -1660,7 +1668,7 @@ get_pixel_format (gint32 drawableID)
 
     case GIMP_INDEXED_IMAGE:
     case GIMP_INDEXEDA_IMAGE:
-      format = gimp_drawable_get_format(drawableID);
+      format = gimp_drawable_get_format(drawable);
       break;
 
     default:
@@ -1672,7 +1680,7 @@ get_pixel_format (gint32 drawableID)
 }
 
 static const Babl *
-get_channel_format (gint32 drawableID)
+get_channel_format (GimpDrawable *drawable)
 {
   const Babl *format;
 
@@ -1684,7 +1692,7 @@ get_channel_format (gint32 drawableID)
 }
 
 static const Babl *
-get_mask_format (gint32 drawableID)
+get_mask_format (GimpLayerMask *mask)
 {
   const Babl *format;
 
@@ -1695,59 +1703,59 @@ get_mask_format (gint32 drawableID)
   return format;
 }
 
-static void
-append_layers (const gint *layers,
-               gint        n_layers,
-               GArray     *array)
+static GList *
+append_layers (GList *layers)
 {
-  gint i;
+  GList *psd_layers = NULL;
+  GList *iter;
 
-  for (i = 0; i < n_layers; i++)
+  for (iter = layers; iter; iter = iter->next)
     {
-      PSD_Layer layer = {};
-      gboolean  is_group;
+      PSD_Layer *layer = g_new0 (PSD_Layer, 1);
+      gboolean   is_group;
 
-      layer.id = layers[i];
+      layer->layer = iter->data;
 
-      is_group = gimp_item_is_group (layer.id);
+      is_group = gimp_item_is_group (iter->data);
 
       if (! is_group)
-        layer.type = PSD_LAYER_TYPE_LAYER;
+        layer->type = PSD_LAYER_TYPE_LAYER;
       else
-        layer.type = PSD_LAYER_TYPE_GROUP_START;
+        layer->type = PSD_LAYER_TYPE_GROUP_START;
 
-      g_array_append_val (array, layer);
+      psd_layers = g_list_append (psd_layers, layer);
 
       if (is_group)
         {
-          gint32 *group_layers;
-          gint    n;
+          PSD_Layer *end_layer = g_new0 (PSD_Layer, 1);
+          GList     *group_layers;
 
-          group_layers = gimp_item_get_children (layer.id, &n);
-          append_layers (group_layers, n, array);
-          g_free (group_layers);
+          group_layers = gimp_item_get_children (iter->data);
+          psd_layers = g_list_concat (psd_layers,
+                                      append_layers (group_layers));
+          g_list_free (group_layers);
 
-          layer.type = PSD_LAYER_TYPE_GROUP_END;
-          g_array_append_val (array, layer);
+          end_layer->layer = iter->data;
+          end_layer->type = PSD_LAYER_TYPE_GROUP_END;
+          psd_layers = g_list_append (psd_layers, end_layer);
         }
     }
+
+  return psd_layers;
 }
 
-static PSD_Layer *
-image_get_all_layers (gint32  image_id,
-                      gint   *n_layers)
+static GList *
+image_get_all_layers (GimpImage *image,
+                      gint      *n_layers)
 {
-  GArray *array = g_array_new (FALSE, FALSE, sizeof (PSD_Layer));
-  gint32 *layers;
-  gint    n;
-
-  layers = gimp_image_get_layers (image_id, &n);
-
-  append_layers (layers, n, array);
+  GList *psd_layers = NULL;
+  GList *layers;
 
-  g_free (layers);
+  layers = gimp_image_get_layers (image);
+  psd_layers = append_layers (layers);
+  g_list_free (layers);
 
-  *n_layers = array->len;
+  *n_layers = g_list_length (psd_layers);
 
-  return (PSD_Layer *) g_array_free (array, FALSE);
+  return psd_layers;
 }
diff --git a/plug-ins/file-psd/psd-save.h b/plug-ins/file-psd/psd-save.h
index 9308271dd8..45931b2466 100644
--- a/plug-ins/file-psd/psd-save.h
+++ b/plug-ins/file-psd/psd-save.h
@@ -20,7 +20,7 @@
 
 
 gboolean   save_image (const gchar  *filename,
-                       gint32        image_id,
+                       GimpImage    *image,
                        GError      **error);
 
 
diff --git a/plug-ins/file-psd/psd-thumb-load.c b/plug-ins/file-psd/psd-thumb-load.c
index a4c7c7d5fc..73a69cdd67 100644
--- a/plug-ins/file-psd/psd-thumb-load.c
+++ b/plug-ins/file-psd/psd-thumb-load.c
@@ -46,16 +46,16 @@ static gint    read_image_resource_block  (PSDimage     *img_a,
                                            FILE         *f,
                                            GError      **error);
 
-static gint32  create_gimp_image          (PSDimage     *img_a,
+static GimpImage * create_gimp_image      (PSDimage     *img_a,
                                            const gchar  *filename);
 
-static gint    add_image_resources        (gint32        image_id,
+static gint    add_image_resources        (GimpImage    *image,
                                            PSDimage     *img_a,
                                            FILE         *f,
                                            GError      **error);
 
 /* Main file load function */
-gint32
+GimpImage *
 load_thumbnail_image (const gchar  *filename,
                       gint         *width,
                       gint         *height,
@@ -64,12 +64,12 @@ load_thumbnail_image (const gchar  *filename,
   FILE        *f;
   struct stat  st;
   PSDimage     img_a;
-  gint32       image_id = -1;
-  GError      *error    = NULL;
+  GimpImage   *image = NULL;
+  GError      *error = NULL;
 
   /* ----- Open PSD file ----- */
   if (g_stat (filename, &st) == -1)
-    return -1;
+    return NULL;
 
   gimp_progress_init_printf (_("Opening thumbnail for '%s'"),
                              gimp_filename_to_utf8 (filename));
@@ -81,7 +81,7 @@ load_thumbnail_image (const gchar  *filename,
       g_set_error (load_error, G_FILE_ERROR, g_file_error_from_errno (errno),
                    _("Could not open '%s' for reading: %s"),
                    gimp_filename_to_utf8 (filename), g_strerror (errno));
-      return -1;
+      return NULL;
     }
 
   /* ----- Read the PSD file Header block ----- */
@@ -104,23 +104,23 @@ load_thumbnail_image (const gchar  *filename,
 
   /* ----- Create GIMP image ----- */
   IFDBG(2) g_debug ("Create GIMP image");
-  image_id = create_gimp_image (&img_a, filename);
-  if (image_id < 0)
+  image = create_gimp_image (&img_a, filename);
+  if (! image)
     goto load_error;
 
   /* ----- Add image resources ----- */
   IFDBG(2) g_debug ("Add image resources");
-  if (add_image_resources (image_id, &img_a, f, &error) < 1)
+  if (add_image_resources (image, &img_a, f, &error) < 1)
     goto load_error;
   gimp_progress_update (1.0);
 
-  gimp_image_clean_all (image_id);
-  gimp_image_undo_enable (image_id);
+  gimp_image_clean_all (image);
+  gimp_image_undo_enable (image);
   fclose (f);
 
   *width = img_a.columns;
   *height = img_a.rows;
-  return image_id;
+  return image;
 
   /* ----- Process load errors ----- */
  load_error:
@@ -132,14 +132,14 @@ load_thumbnail_image (const gchar  *filename,
     }
 
   /* Delete partially loaded image */
-  if (image_id > 0)
-    gimp_image_delete (image_id);
+  if (image)
+    gimp_image_delete (image);
 
   /* Close file if Open */
   if (! (f == NULL))
     fclose (f);
 
-  return -1;
+  return NULL;
 }
 
 
@@ -254,26 +254,26 @@ read_image_resource_block (PSDimage  *img_a,
   return 0;
 }
 
-static gint32
+static GimpImage *
 create_gimp_image (PSDimage    *img_a,
                    const gchar *filename)
 {
-  gint32 image_id = -1;
+  GimpImage *image = NULL;
 
   img_a->base_type = GIMP_RGB;
 
   /* Create gimp image */
   IFDBG(2) g_debug ("Create image");
-  image_id = gimp_image_new (img_a->columns, img_a->rows, img_a->base_type);
+  image = gimp_image_new (img_a->columns, img_a->rows, img_a->base_type);
 
-  gimp_image_set_filename (image_id, filename);
-  gimp_image_undo_disable (image_id);
+  gimp_image_set_filename (image, filename);
+  gimp_image_undo_disable (image);
 
-  return image_id;
+  return image;
 }
 
 static gint
-add_image_resources (gint32     image_id,
+add_image_resources (GimpImage *image,
                      PSDimage  *img_a,
                      FILE      *f,
                      GError   **error)
@@ -296,7 +296,7 @@ add_image_resources (gint32     image_id,
           img_a->image_res_start + img_a->image_res_len)
         return 0;
 
-      status = load_thumbnail_resource (&res_a, image_id, f, error);
+      status = load_thumbnail_resource (&res_a, image, f, error);
       /* Error */
       if (status < 0)
         return -1;
diff --git a/plug-ins/file-psd/psd-thumb-load.h b/plug-ins/file-psd/psd-thumb-load.h
index a5e1281e4f..71935a897d 100644
--- a/plug-ins/file-psd/psd-thumb-load.h
+++ b/plug-ins/file-psd/psd-thumb-load.h
@@ -22,10 +22,10 @@
 #define __PSD_THUMB_LOAD_H__
 
 
-gint32 load_thumbnail_image (const gchar  *filename,
-                             gint         *width,
-                             gint         *height,
-                             GError      **error);
+GimpImage * load_thumbnail_image (const gchar  *filename,
+                                  gint         *width,
+                                  gint         *height,
+                                  GError      **error);
 
 
 #endif /* __PSD_THUMB_LOAD_H__ */
diff --git a/plug-ins/file-psd/psd.c b/plug-ins/file-psd/psd.c
index 1f02a71e22..1448025369 100644
--- a/plug-ins/file-psd/psd.c
+++ b/plug-ins/file-psd/psd.c
@@ -68,8 +68,8 @@ static GimpValueArray * psd_load_thumb       (GimpProcedure        *procedure,
                                               gpointer              run_data);
 static GimpValueArray * psd_save             (GimpProcedure        *procedure,
                                               GimpRunMode           run_mode,
-                                              gint32                image_id,
-                                              gint32                drawable_id,
+                                              GimpImage            *image,
+                                              GimpDrawable         *drawable,
                                               GFile                *file,
                                               const GimpValueArray *args,
                                               gpointer              run_data);
@@ -232,7 +232,7 @@ psd_load (GimpProcedure        *procedure,
   gboolean        resolution_loaded = FALSE;
   gboolean        profile_loaded    = FALSE;
   gboolean        interactive;
-  gint32          image_id;
+  GimpImage      *image;
   GimpMetadata   *metadata;
   GError         *error = NULL;
 
@@ -251,19 +251,19 @@ psd_load (GimpProcedure        *procedure,
       break;
     }
 
-  image_id = load_image (g_file_get_path (file),
-                         strcmp (gimp_procedure_get_name (procedure),
-                                 LOAD_MERGED_PROC) == 0,
-                         &resolution_loaded,
-                         &profile_loaded,
-                         &error);
+  image = load_image (g_file_get_path (file),
+                      strcmp (gimp_procedure_get_name (procedure),
+                              LOAD_MERGED_PROC) == 0,
+                      &resolution_loaded,
+                      &profile_loaded,
+                      &error);
 
-  if (image_id < 1)
+  if (! image)
     return gimp_procedure_new_return_values (procedure,
                                              GIMP_PDB_EXECUTION_ERROR,
                                              error);
 
-  metadata = gimp_image_metadata_load_prepare (image_id, "image/x-psd",
+  metadata = gimp_image_metadata_load_prepare (image, "image/x-psd",
                                                file, NULL);
   if (metadata)
     {
@@ -275,7 +275,7 @@ psd_load (GimpProcedure        *procedure,
       if (profile_loaded)
         flags &= ~GIMP_METADATA_LOAD_COLORSPACE;
 
-      gimp_image_metadata_load_finish (image_id, "image/x-psd",
+      gimp_image_metadata_load_finish (image, "image/x-psd",
                                        metadata, flags,
                                        interactive);
 
@@ -286,7 +286,7 @@ psd_load (GimpProcedure        *procedure,
                                                   GIMP_PDB_SUCCESS,
                                                   NULL);
 
-  GIMP_VALUES_SET_IMAGE (return_vals, 1, image_id);
+  GIMP_VALUES_SET_IMAGE (return_vals, 1, image);
 
   return return_vals;
 }
@@ -302,7 +302,7 @@ psd_load_thumb (GimpProcedure        *procedure,
   gchar          *filename;
   gint            width  = 0;
   gint            height = 0;
-  gint32          image_id;
+  GimpImage      *image;
   GError         *error = NULL;
 
   INIT_I18N ();
@@ -310,9 +310,9 @@ psd_load_thumb (GimpProcedure        *procedure,
 
   filename = g_file_get_path (file);
 
-  image_id = load_thumbnail_image (filename, &width, &height, &error);
+  image    = load_thumbnail_image (filename, &width, &height, &error);
 
-  if (image_id < 1)
+  if (! image)
     return gimp_procedure_new_return_values (procedure,
                                              GIMP_PDB_EXECUTION_ERROR,
                                              error);
@@ -321,7 +321,7 @@ psd_load_thumb (GimpProcedure        *procedure,
                                                   GIMP_PDB_SUCCESS,
                                                   NULL);
 
-  GIMP_VALUES_SET_IMAGE (return_vals, 1, image_id);
+  GIMP_VALUES_SET_IMAGE (return_vals, 1, image);
   GIMP_VALUES_SET_INT   (return_vals, 2, width);
   GIMP_VALUES_SET_INT   (return_vals, 3, height);
 
@@ -333,8 +333,8 @@ psd_load_thumb (GimpProcedure        *procedure,
 static GimpValueArray *
 psd_save (GimpProcedure        *procedure,
           GimpRunMode           run_mode,
-          gint32                image_id,
-          gint32                drawable_id,
+          GimpImage            *image,
+          GimpDrawable         *drawable,
           GFile                *file,
           const GimpValueArray *args,
           gpointer              run_data)
@@ -354,7 +354,7 @@ psd_save (GimpProcedure        *procedure,
     case GIMP_RUN_WITH_LAST_VALS:
       gimp_ui_init (PLUG_IN_BINARY, FALSE);
 
-      export = gimp_export_image (&image_id, &drawable_id, "PSD",
+      export = gimp_export_image (&image, &drawable, "PSD",
                                   GIMP_EXPORT_CAN_HANDLE_RGB     |
                                   GIMP_EXPORT_CAN_HANDLE_GRAY    |
                                   GIMP_EXPORT_CAN_HANDLE_INDEXED |
@@ -371,17 +371,17 @@ psd_save (GimpProcedure        *procedure,
       break;
     }
 
-  metadata = gimp_image_metadata_save_prepare (image_id,
+  metadata = gimp_image_metadata_save_prepare (image,
                                                "image/x-psd",
                                                &metadata_flags);
 
-  if (save_image (g_file_get_path (file), image_id, &error))
+  if (save_image (g_file_get_path (file), image, &error))
     {
       if (metadata)
         {
           gimp_metadata_set_bits_per_sample (metadata, 8);
 
-          gimp_image_metadata_save_finish (image_id,
+          gimp_image_metadata_save_finish (image,
                                            "image/x-psd",
                                            metadata, metadata_flags,
                                            file, NULL);
@@ -393,7 +393,7 @@ psd_save (GimpProcedure        *procedure,
     }
 
   if (export == GIMP_EXPORT_EXPORT)
-    gimp_image_delete (image_id);
+    gimp_image_delete (image);
 
   if (metadata)
     g_object_unref (metadata);


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