From: dirk <dirk@git.imagemagick.org>
Date: Sun, 17 Aug 2014 08:33:47 +0000 (+0000)
Subject: Added check for pixel order and availability.
X-Git-Tag: 7.0.1-0~2088
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=434ce8a41602615a955839cec5cc3d1b0665806c;p=imagemagick

Added check for pixel order and availability.
---

diff --git a/MagickCore/accelerate.c b/MagickCore/accelerate.c
index 2d4ac3587..908478076 100644
--- a/MagickCore/accelerate.c
+++ b/MagickCore/accelerate.c
@@ -62,6 +62,7 @@ Include declarations.
 #include "MagickCore/opencl.h"
 #include "MagickCore/opencl-private.h"
 #include "MagickCore/option.h"
+#include "MagickCore/pixel-accessor.h"
 #include "MagickCore/pixel-private.h"
 #include "MagickCore/prepress.h"
 #include "MagickCore/quantize.h"
@@ -152,6 +153,20 @@ static MagickBooleanType checkAccelerateCondition(const Image* image,
   if (image->read_mask != MagickFalse || image->write_mask != MagickFalse)
     return(MagickFalse);
 
+  /* check if pixel order is RGBA */
+  if (GetPixelChannelOffset(image,RedPixelChannel) != 0 ||
+      GetPixelChannelOffset(image,GreenPixelChannel) != 1 ||
+      GetPixelChannelOffset(image,BluePixelChannel) != 2 ||
+      GetPixelChannelOffset(image,AlphaPixelChannel) != 3)
+    return(MagickFalse);
+
+  /* check if all channels are available */
+  if (((GetPixelRedTraits(image) & UpdatePixelTrait) == 0) ||
+      ((GetPixelGreenTraits(image) & UpdatePixelTrait) == 0) ||
+      ((GetPixelBlueTraits(image) & UpdatePixelTrait) == 0) ||
+      ((GetPixelAlphaTraits(image) & UpdatePixelTrait) == 0))
+    return(MagickFalse);
+
   return(MagickTrue);
 }