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[imagemagick] / MagickCore / attribute.c

diff --git a/MagickCore/attribute.c b/MagickCore/attribute.c
index 89f9abc11f9598fe90b1b82cf34140daf8be8272..227645bb40586660d5ddfb9ad2ba7c61cccd2324 100644 (file)
--- a/MagickCore/attribute.c
+++ b/MagickCore/attribute.c
@@ -168,7 +168,8 @@ MagickExport RectangleInfo GetImageBoundingBox(const Image *image,
   status=MagickTrue;
   GetPixelInfo(image,&zero);
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-  #pragma omp parallel for schedule(static,4) shared(status)
+  #pragma omp parallel for schedule(static,4) shared(status) \
+    dynamic_number_threads(image->columns,image->rows,1)
 #endif
   for (y=0; y < (ssize_t) image->rows; y++)
   {
@@ -231,7 +232,7 @@ MagickExport RectangleInfo GetImageBoundingBox(const Image *image,
   image_view=DestroyCacheView(image_view);
   if ((bounds.width == 0) || (bounds.height == 0))
     (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
-      "GeometryDoesNotContainImage","`%s'",image->filename);
+      "GeometryDoesNotContainImage","'%s'",image->filename);
   else
     {
       bounds.width-=(bounds.x-1);
@@ -304,7 +305,9 @@ MagickExport size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
         i;
 
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-      #pragma omp parallel for schedule(static) shared(status)
+      #pragma omp parallel for schedule(static) shared(status) \
+        if ((image->colors) > 256) \
+          num_threads(GetMagickResourceLimit(ThreadResource))
 #endif
       for (i=0; i < (ssize_t) image->colors; i++)
       {
@@ -384,7 +387,8 @@ MagickExport size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
         depth_map[i]=depth;
       }
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-      #pragma omp parallel for schedule(static,4) shared(status)
+      #pragma omp parallel for schedule(static,4) shared(status) \
+        dynamic_number_threads(image->columns,image->rows,1)
 #endif
       for (y=0; y < (ssize_t) image->rows; y++)
       {
@@ -447,7 +451,8 @@ MagickExport size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
     Compute pixel depth.
   */
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-  #pragma omp parallel for schedule(static,4) shared(status)
+  #pragma omp parallel for schedule(static,4) shared(status) \
+    dynamic_number_threads(image->columns,image->rows,1)
 #endif
   for (y=0; y < (ssize_t) image->rows; y++)
   {
@@ -809,7 +814,9 @@ MagickExport MagickBooleanType IsImageMonochrome(const Image *image,
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 %  IsImageOpaque() returns MagickTrue if none of the pixels in the image have
-%  an opacity value other than opaque (0).
+%  an alpha value other than OpaqueAlpha (QuantumRange).
+%
+%  Will return true immediatally is alpha channel is not available.
 %
 %  The format of the IsImageOpaque method is:
 %
@@ -845,8 +852,10 @@ MagickExport MagickBooleanType IsImageOpaque(const Image *image,
   assert(image->signature == MagickSignature);
   if (image->debug != MagickFalse)
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
+
   if (image->matte == MagickFalse)
     return(MagickTrue);
+
   image_view=AcquireVirtualCacheView(image,exception);
   for (y=0; y < (ssize_t) image->rows; y++)
   {
@@ -926,7 +935,8 @@ MagickExport MagickBooleanType SetImageDepth(Image *image,
         i;
 
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-      #pragma omp parallel for schedule(static) shared(status)
+      #pragma omp parallel for schedule(static) shared(status) \
+        dynamic_number_threads(image->columns,1,1)
 #endif
       for (i=0; i < (ssize_t) image->colors; i++)
       {
@@ -934,7 +944,8 @@ MagickExport MagickBooleanType SetImageDepth(Image *image,
           image->colormap[i].red=(double) ScaleAnyToQuantum(ScaleQuantumToAny(
             ClampToQuantum(image->colormap[i].red),range),range);
         if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0)
-          image->colormap[i].green=(double) ScaleAnyToQuantum(ScaleQuantumToAny(            ClampToQuantum(image->colormap[i].green),range),range);
+          image->colormap[i].green=(double) ScaleAnyToQuantum(ScaleQuantumToAny(
+            ClampToQuantum(image->colormap[i].green),range),range);
         if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0)
           image->colormap[i].blue=(double) ScaleAnyToQuantum(ScaleQuantumToAny(
             ClampToQuantum(image->colormap[i].blue),range),range);
@@ -968,7 +979,8 @@ MagickExport MagickBooleanType SetImageDepth(Image *image,
         depth_map[i]=ScaleAnyToQuantum(ScaleQuantumToAny((Quantum) i,range),
           range);
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-      #pragma omp parallel for schedule(static,4) shared(status)
+      #pragma omp parallel for schedule(static,4) shared(status) \
+        dynamic_number_threads(image->columns,image->rows,1)
 #endif
       for (y=0; y < (ssize_t) image->rows; y++)
       {
@@ -1031,7 +1043,8 @@ MagickExport MagickBooleanType SetImageDepth(Image *image,
     Scale pixels to desired depth.
   */
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
-  #pragma omp parallel for schedule(static,4) shared(status)
+  #pragma omp parallel for schedule(static,4) shared(status) \
+    dynamic_number_threads(image->columns,image->rows,1)
 #endif
   for (y=0; y < (ssize_t) image->rows; y++)
   {