[gimp] app: add GIMP_PRECISION_FLOAT and all its formats

[Michael Natterer <mitch src gnome org>]

commit a34afd63d8cc134821ac0b18299802e8f950da36
Author: Michael Natterer <mitch gimp org>
Date:   Sun Apr 22 20:27:40 2012 +0200

    app: add GIMP_PRECISION_FLOAT and all its formats
    
    Images in that format can't be created currently, the legacy code
    crashes royally on it.

 app/core/core-enums.c      |    2 +
 app/core/core-enums.h      |    3 +-
 app/core/gimpimage.c       |    3 +-
 app/gegl/gimp-babl.c       |   85 ++++++++++++++++++++++++++++++++++++++++----
 app/gegl/gimp-gegl-utils.c |   30 +++++++++++-----
 5 files changed, 105 insertions(+), 18 deletions(-)
---
diff --git a/app/core/core-enums.c b/app/core/core-enums.c
index a32e7a7..f9b9e0d 100644
--- a/app/core/core-enums.c
+++ b/app/core/core-enums.c
@@ -719,12 +719,14 @@ gimp_precision_get_type (void)
   static const GEnumValue values[] =
   {
     { GIMP_PRECISION_U8, "GIMP_PRECISION_U8", "u8" },
+    { GIMP_PRECISION_FLOAT, "GIMP_PRECISION_FLOAT", "float" },
     { 0, NULL, NULL }
   };
 
   static const GimpEnumDesc descs[] =
   {
     { GIMP_PRECISION_U8, NC_("precision", "8-Bit unsigned integer"), NULL },
+    { GIMP_PRECISION_FLOAT, NC_("precision", "32-Bit floating point"), NULL },
     { 0, NULL, NULL }
   };
 
diff --git a/app/core/core-enums.h b/app/core/core-enums.h
index 9ffeda9..c563f08 100644
--- a/app/core/core-enums.h
+++ b/app/core/core-enums.h
@@ -330,7 +330,8 @@ GType gimp_precision_get_type (void) G_GNUC_CONST;
 
 typedef enum /*< pdb-skip >*/
 {
-  GIMP_PRECISION_U8  /*< desc="8-Bit unsigned integer" >*/
+  GIMP_PRECISION_U8,    /*< desc="8-Bit unsigned integer" >*/
+  GIMP_PRECISION_FLOAT  /*< desc="32-Bit floating point"  >*/
 } GimpPrecision;
 
 
diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index 868c04e..6cdc9f3 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -1553,7 +1553,8 @@ gimp_image_get_mask_format (const GimpImage *image)
 
   switch (gimp_image_get_precision (image))
     {
-    case GIMP_PRECISION_U8: return babl_format ("Y u8");
+    case GIMP_PRECISION_U8:    return babl_format ("Y u8");
+    case GIMP_PRECISION_FLOAT: return babl_format ("Y float");
     }
 
   g_return_val_if_reached (NULL);
diff --git a/app/gegl/gimp-babl.c b/app/gegl/gimp-babl.c
index 78a0717..48b3e5f 100644
--- a/app/gegl/gimp-babl.c
+++ b/app/gegl/gimp-babl.c
@@ -53,14 +53,29 @@ gimp_babl_init (void)
                    babl_component ("A"),
                    NULL);
 
+  babl_format_new ("name", "R float",
+                   babl_model ("RGBA"),
+                   babl_type ("float"),
+                   babl_component ("R"),
+                   NULL);
+  babl_format_new ("name", "G float",
+                   babl_model ("RGBA"),
+                   babl_type ("float"),
+                   babl_component ("G"),
+                   NULL);
+  babl_format_new ("name", "B float",
+                   babl_model ("RGBA"),
+                   babl_type ("float"),
+                   babl_component ("B"),
+                   NULL);
   babl_format_new ("name", "A float",
-                   babl_model ("R'G'B'A"),
+                   babl_model ("RGBA"),
                    babl_type ("float"),
                    babl_component ("A"),
                    NULL);
 
   babl_format_new ("name", "A double",
-                   babl_model ("R'G'B'A"),
+                   babl_model ("RGBA"),
                    babl_type ("double"),
                    babl_component ("A"),
                    NULL);
@@ -74,12 +89,26 @@ static const struct
 babl_descriptions[] =
 {
   { "R'G'B' u8",  N_("RGB") },
+  { "RGB float",  N_("RGB") },
+
   { "R'G'B'A u8", N_("RGB-alpha") },
+  { "RGBA float", N_("RGB-alpha") },
+
   { "Y' u8",      N_("Grayscale") },
+  { "Y float",    N_("Grayscale") },
+
   { "Y'A u8",     N_("Grayscale-alpha") },
+  { "YA float",   N_("Grayscale-alpha") },
+
   { "R' u8",      N_("Red component") },
+  { "R float",    N_("Red component") },
+
   { "G' u8",      N_("Green component") },
+  { "G float",    N_("Green component") },
+
   { "B' u8",      N_("Blue component") },
+  { "B float",    N_("Blue component") },
+
   { "A u8",       N_("Alpha component") },
   { "A float",    N_("Alpha component") },
   { "A double",   N_("Alpha component") }
@@ -130,14 +159,18 @@ gimp_babl_format_get_base_type (const Babl *format)
 {
   g_return_val_if_fail (format != NULL, -1);
 
-  if (format == babl_format ("Y u8")  ||
-      format == babl_format ("Y' u8") ||
-      format == babl_format ("Y'A u8"))
+  if (format == babl_format ("Y u8")    ||
+      format == babl_format ("Y' u8")   ||
+      format == babl_format ("Y float") ||
+      format == babl_format ("Y'A u8")  ||
+      format == babl_format ("YA float"))
     {
       return GIMP_GRAY;
     }
-  else if (format == babl_format ("R'G'B' u8") ||
-           format == babl_format ("R'G'B'A u8"))
+  else if (format == babl_format ("R'G'B' u8")  ||
+           format == babl_format ("RGB float")  ||
+           format == babl_format ("R'G'B'A u8") ||
+           format == babl_format ("RGBA float"))
     {
       return GIMP_RGB;
     }
@@ -160,6 +193,8 @@ gimp_babl_format_get_precision (const Babl *format)
 
   if (type == babl_type ("u8"))
     return GIMP_PRECISION_U8;
+  else if (type == babl_type ("float"))
+    return GIMP_PRECISION_FLOAT;
 
   g_return_val_if_reached (-1);
 }
@@ -180,6 +215,12 @@ gimp_babl_format (GimpImageBaseType  base_type,
           else
             return babl_format ("R'G'B' u8");
 
+        case GIMP_PRECISION_FLOAT:
+          if (with_alpha)
+            return babl_format ("RGBA float");
+          else
+            return babl_format ("RGB float");
+
         default:
           break;
         }
@@ -194,6 +235,12 @@ gimp_babl_format (GimpImageBaseType  base_type,
           else
             return babl_format ("Y' u8");
 
+        case GIMP_PRECISION_FLOAT:
+          if (with_alpha)
+            return babl_format ("YA float");
+          else
+            return babl_format ("Y float");
+
         default:
           break;
         }
@@ -227,6 +274,19 @@ gimp_babl_component_format (GimpImageBaseType base_type,
             default:
               break;
             }
+          break;
+
+        case GIMP_PRECISION_FLOAT:
+          switch (index)
+            {
+            case 0: return babl_format ("R float");
+            case 1: return babl_format ("G float");
+            case 2: return babl_format ("B float");
+            case 3: return babl_format ("A float");
+            default:
+              break;
+            }
+          break;
 
         default:
           break;
@@ -244,6 +304,17 @@ gimp_babl_component_format (GimpImageBaseType base_type,
             default:
               break;
             }
+          break;
+
+        case GIMP_PRECISION_FLOAT:
+          switch (index)
+            {
+            case 0: return babl_format ("Y float");
+            case 1: return babl_format ("A float");
+            default:
+              break;
+            }
+          break;
 
         default:
           break;
diff --git a/app/gegl/gimp-gegl-utils.c b/app/gegl/gimp-gegl-utils.c
index 4500087..8d42438 100644
--- a/app/gegl/gimp-gegl-utils.c
+++ b/app/gegl/gimp-gegl-utils.c
@@ -37,15 +37,27 @@ gimp_babl_format_get_image_type (const Babl *format)
 {
   g_return_val_if_fail (format != NULL, -1);
 
-  if (format == babl_format ("Y u8") ||
-      format == babl_format ("Y' u8"))
-    return GIMP_GRAY_IMAGE;
-  else if (format == babl_format ("Y'A u8"))
-    return GIMP_GRAYA_IMAGE;
-  else if (format == babl_format ("R'G'B' u8"))
-    return GIMP_RGB_IMAGE;
-  else if (format == babl_format ("R'G'B'A u8"))
-    return GIMP_RGBA_IMAGE;
+  if (format == babl_format ("Y u8")  ||
+      format == babl_format ("Y' u8") ||
+      format == babl_format ("Y float"))
+    {
+      return GIMP_GRAY_IMAGE;
+    }
+  else if (format == babl_format ("Y'A u8") ||
+           format == babl_format ("YA float"))
+    {
+      return GIMP_GRAYA_IMAGE;
+    }
+  else if (format == babl_format ("R'G'B' u8") ||
+           format == babl_format ("RGB float"))
+    {
+      return GIMP_RGB_IMAGE;
+    }
+  else if (format == babl_format ("R'G'B'A u8") ||
+           format == babl_format ("RGBA float"))
+    {
+      return GIMP_RGBA_IMAGE;
+    }
   else if (babl_format_is_palette (format))
     {
       if (babl_format_has_alpha (format))