From: Cristy <urban-warrior@imagemagick.org>
Date: Fri, 1 Dec 2017 00:38:30 +0000 (-0500)
Subject: Support Stereo composite operator
X-Git-Tag: 7.0.7-14~16
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f91b39ed781a23024e02bb95879b46d3012ceb78;p=imagemagick

Support Stereo composite operator
---

diff --git a/ChangeLog b/ChangeLog
index 273cd840f..8dee8e746 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2017-11-30  7.0.7-14 Cristy  <quetzlzacatenango@image...>
+  * Support Stereo composite operator.
+
 2017-11-30  7.0.7-13 Cristy  <quetzlzacatenango@image...>
   * Release ImageMagick version 7.0.7-13, GIT revision 21823:72cb0fd0c:20171130.
 
diff --git a/MagickCore/composite.c b/MagickCore/composite.c
index e2f59842c..7a258c300 100644
--- a/MagickCore/composite.c
+++ b/MagickCore/composite.c
@@ -2264,6 +2264,12 @@ MagickExport MagickBooleanType CompositeImage(Image *image,
               (Dca/Da))+Sca*(1.0-Da)+Dca*(1.0-Sa));
             break;
           }
+          case StereoCompositeOp:
+          {
+            if (channel == RedPixelChannel)
+              pixel=(MagickRealType) GetPixelRed(source_image,p);
+            break;
+          }
           case ThresholdCompositeOp:
           {
             MagickRealType
diff --git a/MagickCore/composite.h b/MagickCore/composite.h
index ca658210f..d866f0ff4 100644
--- a/MagickCore/composite.h
+++ b/MagickCore/composite.h
@@ -94,7 +94,8 @@ typedef enum
   SrcOverCompositeOp,
   ThresholdCompositeOp,
   VividLightCompositeOp,
-  XorCompositeOp
+  XorCompositeOp,
+  StereoCompositeOp
 } CompositeOperator;
 
 extern MagickExport MagickBooleanType
diff --git a/MagickCore/option.c b/MagickCore/option.c
index 4a2068b2a..5e4e1e252 100644
--- a/MagickCore/option.c
+++ b/MagickCore/option.c
@@ -971,6 +971,7 @@ static const OptionInfo
     { "SrcIn", SrcInCompositeOp, UndefinedOptionFlag, MagickFalse },
     { "SrcOut", SrcOutCompositeOp, UndefinedOptionFlag, MagickFalse },
     { "SrcOver", SrcOverCompositeOp, UndefinedOptionFlag, MagickFalse },
+    { "Stereo", StereoCompositeOp, UndefinedOptionFlag, MagickFalse },
     { "VividLight", VividLightCompositeOp, UndefinedOptionFlag, MagickFalse },
     { "Xor", XorCompositeOp, UndefinedOptionFlag, MagickFalse },
     { "Divide", DivideDstCompositeOp, DeprecateOptionFlag, MagickTrue },