[gegl/soc-2012-ville: 19/24] added reference compositions to brightness-contrast, color-reduction, color-temperature, color-to-al

[Ville Sokk <villesokk src gnome org>]

commit d4b2bbb390862e57cc58434035b89261927419bd
Author: Ville Sokk <ville sokk gmail com>
Date:   Thu Jul 19 20:21:10 2012 +0300

    added reference compositions to brightness-contrast, color-reduction, color-temperature, color-to-alpha so that the example images would be more interesting

 bin/gegl-tester.c                       |   10 ++++++----
 operations/common/brightness-contrast.c |   17 ++++++++++++++++-
 operations/common/color-reduction.c     |   20 +++++++++++++++++++-
 operations/common/color-temperature.c   |   14 ++++++++++++++
 operations/common/color-to-alpha.c      |   24 +++++++++++++++++++++++-
 5 files changed, 78 insertions(+), 7 deletions(-)
---
diff --git a/bin/gegl-tester.c b/bin/gegl-tester.c
index 078f5ad..e68157a 100644
--- a/bin/gegl-tester.c
+++ b/bin/gegl-tester.c
@@ -114,9 +114,8 @@ process_operations (GType type)
       if (output_all && matches)
         g_printf ("%s\n", name);
 
-      if (image && xml && matches)
+      if (xml && matches)
         {
-          gchar    *image_path  = g_build_path (G_DIR_SEPARATOR_S, reference_dir, image, NULL);
           gchar    *output_path = operation_to_path (name, FALSE);
           GeglNode *composition;
 
@@ -144,8 +143,10 @@ process_operations (GType type)
               gegl_node_process (output);
 
               /* don't test if run with --all */
-              if (!output_all)
+              if (!output_all && image)
                 {
+                  gchar *image_path = g_build_path (G_DIR_SEPARATOR_S, reference_dir, image, NULL);
+
                   ref_img = gegl_node_new_child (composition,
                                                  "operation", "gegl:load",
                                                  "path", image_path,
@@ -205,11 +206,12 @@ process_operations (GType type)
                           result = FALSE;
                         }
                     }
+
+                  g_free (image_path);
                 }
             }
 
           g_object_unref (composition);
-          g_free (image_path);
           g_free (output_path);
         }
       /* if we are running with --all and the operation doesn't have a
diff --git a/operations/common/brightness-contrast.c b/operations/common/brightness-contrast.c
index 8d37a96..3acf092 100644
--- a/operations/common/brightness-contrast.c
+++ b/operations/common/brightness-contrast.c
@@ -128,6 +128,20 @@ gegl_chant_class_init (GeglChantClass *klass)
 {
   GeglOperationClass            *operation_class;
   GeglOperationPointFilterClass *point_filter_class;
+  gchar                         *composition = "<?xml version='1.0' encoding='UTF-8'?>"
+    "<gegl>"
+    "<node operation='gegl:brightness-contrast'>"
+    "  <params>"
+    "    <param name='contrast'>1.8</param>"
+    "    <param name='brightness'>0.25</param>"
+    "  </params>"
+    "</node>"
+    "<node operation='gegl:load'>"
+    "  <params>"
+    "    <param name='path'>standard-input.png</param>"
+    "  </params>"
+    "</node>"
+    "</gegl>";
 
   operation_class    = GEGL_OPERATION_CLASS (klass);
   point_filter_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
@@ -141,9 +155,10 @@ gegl_chant_class_init (GeglChantClass *klass)
 
   gegl_operation_class_set_keys (operation_class,
       "name",       "gegl:brightness-contrast",
-      "categories", "color", 
+      "categories", "color",
       "description", _("Changes the light level and contrast."),
       "cl-source"  , kernel_source,
+      "reference-composition", composition,
       NULL);
 }
 
diff --git a/operations/common/color-reduction.c b/operations/common/color-reduction.c
index 3a641cd..0fab02b 100644
--- a/operations/common/color-reduction.c
+++ b/operations/common/color-reduction.c
@@ -440,7 +440,7 @@ process (GeglOperation       *operation,
         process_random (input, output, result, channel_bits);
         break;
       case GEGL_DITHER_RANDOM_COVARIANT:
-        process_random_covariant (input, output, result, 
+        process_random_covariant (input, output, result,
                                   channel_bits);
         break;
       case GEGL_DITHER_FLOYD_STEINBERG:
@@ -462,6 +462,23 @@ gegl_chant_class_init (GeglChantClass *klass)
 {
   GeglOperationClass       *operation_class;
   GeglOperationFilterClass *filter_class;
+  gchar                    *composition = "<?xml version='1.0' encoding='UTF-8'?>"
+    "<gegl>"
+    "<node operation='gegl:color-reduction'>"
+    "  <params>"
+    "    <param name='red-bits'>2</param>"
+    "    <param name='green-bits'>2</param>"
+    "    <param name='blue-bits'>2</param>"
+    "    <param name='alpha-bits'>2</param>"
+    "    <param name='dither-strategy'>Floyd-Steinberg</param>"
+    "  </params>"
+    "</node>"
+    "<node operation='gegl:load'>"
+    "  <params>"
+    "    <param name='path'>standard-input.png</param>"
+    "  </params>"
+    "</node>"
+    "</gegl>";
 
   operation_class = GEGL_OPERATION_CLASS (klass);
   filter_class    = GEGL_OPERATION_FILTER_CLASS (klass);
@@ -476,6 +493,7 @@ gegl_chant_class_init (GeglChantClass *klass)
     "categories"  , "misc",
     "description" ,
             _("Reduces the number of bits per channel (colors and alpha), with optional dithering"),
+    "reference-composition", composition,
             NULL);
 }
 
diff --git a/operations/common/color-temperature.c b/operations/common/color-temperature.c
index 8e09af7..0e2e729 100644
--- a/operations/common/color-temperature.c
+++ b/operations/common/color-temperature.c
@@ -245,6 +245,19 @@ gegl_chant_class_init (GeglChantClass *klass)
   GObjectClass                  *object_class;
   GeglOperationClass            *operation_class;
   GeglOperationPointFilterClass *point_filter_class;
+  gchar                         *composition = "<?xml version='1.0' encoding='UTF-8'?>"
+    "<gegl>"
+    "<node operation='gegl:color-temperature'>"
+    "  <params>"
+    "    <param name='intended-temperature'>12000</param>"
+    "  </params>"
+    "</node>"
+    "<node operation='gegl:load'>"
+    "  <params>"
+    "    <param name='path'>standard-input.png</param>"
+    "  </params>"
+    "</node>"
+    "</gegl>";
 
   object_class       = G_OBJECT_CLASS (klass);
   operation_class    = GEGL_OPERATION_CLASS (klass);
@@ -265,6 +278,7 @@ gegl_chant_class_init (GeglChantClass *klass)
     "categories" , "color",
     "description",
           _("Allows changing the color temperature of an image."),
+    "reference-composition", composition,
     NULL);
 }
 
diff --git a/operations/common/color-to-alpha.c b/operations/common/color-to-alpha.c
index f55fddb..d0dcd67 100644
--- a/operations/common/color-to-alpha.c
+++ b/operations/common/color-to-alpha.c
@@ -161,8 +161,29 @@ process (GeglOperation       *operation,
 static void
 gegl_chant_class_init (GeglChantClass *klass)
 {
-  GeglOperationClass       *operation_class;
+  GeglOperationClass            *operation_class;
   GeglOperationPointFilterClass *filter_class;
+  gchar                         *composition = "<?xml version='1.0' encoding='UTF-8'?>"
+    "<gegl>"
+    "<node operation='svg:dst-over'>"
+    "  <node operation='gegl:crop'>"
+    "    <params>"
+    "      <param name='width'>200.0</param>"
+    "      <param name='height'>200.0</param>"
+    "    </params>"
+    "  </node>"
+    "  <node operation='gegl:checkerboard'>"
+    "    <params><param name='color1'>rgb(0.5, 0.5, 0.5)</param></params>"
+    "  </node>"
+    "</node>"
+    "<node operation='gegl:color-to-alpha'>"
+    "</node>"
+    "<node operation='gegl:load'>"
+    "  <params>"
+    "    <param name='path'>standard-input.png</param>"
+    "  </params>"
+    "</node>"
+    "</gegl>";
 
   operation_class = GEGL_OPERATION_CLASS (klass);
   filter_class    = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
@@ -174,6 +195,7 @@ gegl_chant_class_init (GeglChantClass *klass)
     "name"       , "gegl:color-to-alpha",
     "categories" , "color",
     "description", _("Performs color-to-alpha on the image."),
+    "reference-composition", composition,
     NULL);
 }