From b506e2ad443103f609a4a1cde3cd1832d9662fd0 Mon Sep 17 00:00:00 2001
From: wiredfool <eric-github@soroos.net>
Date: Thu, 10 Oct 2013 22:42:27 -0700
Subject: [PATCH] Fixed ability to create LAB profiles with color temperatures

---
 PIL/ImageCms.py        |  8 ++++----
 Tests/test_imagecms.py | 15 +++++++++++++++
 _imagingcms.c          |  6 +++---
 3 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/PIL/ImageCms.py b/PIL/ImageCms.py
index d9c69e909..20ba6a11f 100644
--- a/PIL/ImageCms.py
+++ b/PIL/ImageCms.py
@@ -566,10 +566,10 @@ def createProfile(colorSpace, colorTemp=-1):
         raise PyCMSError("Color space not supported for on-the-fly profile creation (%s)" % colorSpace)
 
     if colorSpace == "LAB":
-        if isinstance(colorTemp, float):
-            colorTemp = int(colorTemp + 0.5)
-        if not isinstance(colorTemp, int):
-            raise PyCMSError("Color temperature must be a positive integer, \"%s\" not valid" % colorTemp)
+        try:
+            colorTemp = float(colorTemp)
+        except:
+            raise PyCMSError("Color temperature must be numeric, \"%s\" not valid" % colorTemp)
 
     try:
         return core.createProfile(colorSpace, colorTemp)
diff --git a/Tests/test_imagecms.py b/Tests/test_imagecms.py
index ad02ba836..6c4e0e702 100644
--- a/Tests/test_imagecms.py
+++ b/Tests/test_imagecms.py
@@ -89,3 +89,18 @@ def test_exceptions():
 def test_display_profile():
     # try fetching the profile for the current display device
     assert_no_exception(lambda: ImageCms.get_display_profile())
+
+
+def test_lab_color_profile():
+    pLab = ImageCms.createProfile("LAB", 5000)
+    pLab = ImageCms.createProfile("LAB", 6500)
+    
+def test_lab_color():
+    pLab = ImageCms.createProfile("LAB")    
+    t = ImageCms.buildTransform(SRGB, pLab, "RGB", "RGB")
+    i = ImageCms.applyTransform(lena(), t)
+    assert_image(i, "RGB", (128, 128))
+
+    target = Image.open('Tests/images/lena.Lab.tif')
+
+    assert_image_similar(i,target, 1)
diff --git a/_imagingcms.c b/_imagingcms.c
index 20d740a08..d489eed60 100644
--- a/_imagingcms.c
+++ b/_imagingcms.c
@@ -389,7 +389,7 @@ createProfile(PyObject *self, PyObject *args)
     char *sColorSpace;
     cmsHPROFILE hProfile;
     cmsFloat64Number dColorTemp = 0.0;
-    cmsCIExyY *whitePoint = NULL;
+    cmsCIExyY whitePoint;
     cmsBool result;
 
     if (!PyArg_ParseTuple(args, "s|d:createProfile", &sColorSpace, &dColorTemp))
@@ -397,12 +397,12 @@ createProfile(PyObject *self, PyObject *args)
 
     if (strcmp(sColorSpace, "LAB") == 0) {
         if (dColorTemp > 0.0) {
-            result = cmsWhitePointFromTemp(whitePoint, dColorTemp);
+            result = cmsWhitePointFromTemp(&whitePoint, dColorTemp);
             if (!result) {
                 PyErr_SetString(PyExc_ValueError, "ERROR: Could not calculate white point from color temperature provided, must be float in degrees Kelvin");
                 return NULL;
             }
-            hProfile = cmsCreateLab2Profile(whitePoint);
+            hProfile = cmsCreateLab2Profile(&whitePoint);
         } else {
             hProfile = cmsCreateLab2Profile(NULL);
         }