[gimp/gimp-2-10] libgimpcolor: add gimp_color_profile_get_space()

[Michael Natterer <mitch src gnome org>]

commit 7d897a451efda9740b8e88f2e1f258e199f59ee5
Author: Michael Natterer <mitch gimp org>
Date:   Mon Jul 16 14:06:32 2018 +0200

    libgimpcolor: add gimp_color_profile_get_space()
    
    which returns the Babl space matching the profile.
    
    (cherry picked from commit ac57af58a2c00d5c5995965f854a5d7d9e8aef76)

 libgimpcolor/gimpcolor.def      |  1 +
 libgimpcolor/gimpcolorprofile.c | 53 +++++++++++++++++++++++++++++++----------
 libgimpcolor/gimpcolorprofile.h |  4 ++++
 3 files changed, 46 insertions(+), 12 deletions(-)
---
diff --git a/libgimpcolor/gimpcolor.def b/libgimpcolor/gimpcolor.def
index 8bbcbe3c35..f5a749a43e 100644
--- a/libgimpcolor/gimpcolor.def
+++ b/libgimpcolor/gimpcolor.def
@@ -35,6 +35,7 @@ EXPORTS
        gimp_color_profile_get_lcms_profile
        gimp_color_profile_get_manufacturer
        gimp_color_profile_get_model
+       gimp_color_profile_get_space
        gimp_color_profile_get_summary
        gimp_color_profile_get_type
        gimp_color_profile_is_cmyk
diff --git a/libgimpcolor/gimpcolorprofile.c b/libgimpcolor/gimpcolorprofile.c
index f8aa1fe856..fe7c10cfa5 100644
--- a/libgimpcolor/gimpcolorprofile.c
+++ b/libgimpcolor/gimpcolorprofile.c
@@ -1452,10 +1452,48 @@ gimp_color_profile_new_d50_gray_lab_trc (void)
   return gimp_color_profile_new_from_icc_profile (data, length, NULL);
 }
 
+/**
+ * gimp_color_profile_get_space:
+ * @profile: a #GimpColorProfile
+ * @intent:  a #GimpColorRenderingIntent
+ * @error:   return location for #GError
+ *
+ * This function returns the #Babl space of @profile, for the
+ * specified @intent.
+ *
+ * Return value: the new #Babl space.
+ *
+ * Since: 2.10.6
+ **/
+const Babl *
+gimp_color_profile_get_space (GimpColorProfile          *profile,
+                              GimpColorRenderingIntent   intent,
+                              GError                   **error)
+{
+  const Babl  *space;
+  const gchar *babl_error = NULL;
+
+  g_return_val_if_fail (GIMP_IS_COLOR_PROFILE (profile), NULL);
+  g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+  space = babl_icc_make_space ((const gchar *) profile->priv->data,
+                               profile->priv->length,
+                               (BablIccIntent) intent,
+                               &babl_error);
+
+  if (! space)
+    g_set_error (error, GIMP_COLOR_PROFILE_ERROR, 0,
+                 "%s: %s",
+                 gimp_color_profile_get_label (profile), babl_error);
+
+  return space;
+}
+
 /**
  * gimp_color_profile_get_format:
  * @profile: a #GimpColorProfile
  * @format:  a #Babl format
+ * @intent:  a #GimpColorRenderingIntent
  * @error:   return location for #GError
  *
  * This function takes a #GimpColorProfile and a #Babl format and
@@ -1472,25 +1510,16 @@ gimp_color_profile_get_format (GimpColorProfile          *profile,
                                GimpColorRenderingIntent   intent,
                                GError                   **error)
 {
-  const Babl  *space;
-  const gchar *babl_error = NULL;
+  const Babl *space;
 
   g_return_val_if_fail (GIMP_IS_COLOR_PROFILE (profile), NULL);
   g_return_val_if_fail (format != NULL, NULL);
   g_return_val_if_fail (error == NULL || *error == NULL, NULL);
 
-  space = babl_icc_make_space ((const gchar *) profile->priv->data,
-                               profile->priv->length,
-                               (BablIccIntent)intent,
-                               &babl_error);
+  space = gimp_color_profile_get_space (profile, intent, error);
 
   if (! space)
-    {
-      g_set_error (error, GIMP_COLOR_PROFILE_ERROR, 0,
-                   "%s: %s",
-                   gimp_color_profile_get_label (profile), babl_error);
-      return NULL;
-    }
+    return NULL;
 
   return babl_format_with_space (babl_get_name (format), space);
 }
diff --git a/libgimpcolor/gimpcolorprofile.h b/libgimpcolor/gimpcolorprofile.h
index 6f54095355..c09470b612 100644
--- a/libgimpcolor/gimpcolorprofile.h
+++ b/libgimpcolor/gimpcolorprofile.h
@@ -111,10 +111,14 @@ gboolean           gimp_color_profile_is_cmyk               (GimpColorProfile  *
 
 gboolean           gimp_color_profile_is_linear             (GimpColorProfile  *profile);
 
+const Babl       * gimp_color_profile_get_space             (GimpColorProfile  *profile,
+                                                             GimpColorRenderingIntent intent,
+                                                             GError           **error);
 const Babl       * gimp_color_profile_get_format            (GimpColorProfile  *profile,
                                                              const Babl        *format,
                                                              GimpColorRenderingIntent intent,
                                                              GError           **error);
+
 const Babl       * gimp_color_profile_get_lcms_format       (const Babl        *format,
                                                              guint32           *lcms_format);