- Add ImageMagick 6.8.3-1 sources

2013-02-19 12:28:04 +01:00 · 2013-02-19 12:28:04 +01:00 · 615ec83706
commit 615ec83706
parent b8db71063c
3424 changed files with 1398702 additions and 0 deletions
--- a/ImageMagick-6.8.3-1/www/source/core/sigmoidal-contrast.c
+++ b/ImageMagick-6.8.3-1/www/source/core/sigmoidal-contrast.c
@ -0,0 +1,116 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <magick/MagickCore.h>
+
+static MagickBooleanType SigmoidalContrast(ImageView *contrast_view,
+  const ssize_t y,const int id,void *context)
+{
+#define QuantumScale  ((MagickRealType) 1.0/(MagickRealType) QuantumRange)
+#define SigmoidalContrast(x) \
+  (QuantumRange*(1.0/(1+exp(10.0*(0.5-QuantumScale*x)))-0.0066928509)*1.0092503)
+
+  RectangleInfo
+    extent;
+
+  register IndexPacket
+    *indexes;
+
+  register PixelPacket
+    *pixels;
+
+  register ssize_t
+    x;
+
+  extent=GetImageViewExtent(contrast_view);
+  pixels=GetImageViewAuthenticPixels(contrast_view);
+  for (x=0; x < (ssize_t) (extent.width-extent.height); x++)
+  {
+    pixels[x].red=RoundToQuantum(SigmoidalContrast(pixels[x].red));
+    pixels[x].green=RoundToQuantum(SigmoidalContrast(pixels[x].green));
+    pixels[x].blue=RoundToQuantum(SigmoidalContrast(pixels[x].blue));
+    pixels[x].opacity=RoundToQuantum(SigmoidalContrast(pixels[x].opacity));
+  }
+  indexes=GetImageViewAuthenticIndexes(contrast_view);
+  if (indexes != (IndexPacket *) NULL)
+    for (x=0; x < (ssize_t) (extent.width-extent.height); x++)
+      indexes[x]=(IndexPacket) RoundToQuantum(SigmoidalContrast(indexes[x]));
+  return(MagickTrue);
+}
+
+int main(int argc,char **argv)
+{
+#define ThrowImageException(image) \
+{ \
+ \
+  CatchException(exception); \
+  if (contrast_image != (Image *) NULL) \
+    contrast_image=DestroyImage(contrast_image); \
+  exit(-1); \
+}
+#define ThrowViewException(view) \
+{ \
+  char \
+    *description; \
+ \
+  ExceptionType \
+    severity; \
+ \
+  description=GetImageViewException(view,&severity); \
+  (void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); \
+  description=(char *) MagickRelinquishMemory(description); \
+  exit(-1); \
+}
+
+  ExceptionInfo
+    *exception;
+
+  Image
+    *contrast_image;
+
+  ImageInfo
+    *image_info;
+
+  ImageView
+    *contrast_view;
+
+  MagickBooleanType
+    status;
+
+  if (argc != 3)
+    {
+      (void) fprintf(stdout,"Usage: %s image sigmoidal-image\n",argv[0]);
+      exit(0);
+    }
+  /*
+    Read an image.
+  */
+  MagickCoreGenesis(*argv,MagickTrue);
+  image_info=AcquireImageInfo();
+  (void) CopyMagickString(image_info->filename,argv[1],MaxTextExtent);
+  exception=AcquireExceptionInfo();
+  contrast_image=ReadImage(image_info,exception);
+  if (contrast_image == (Image *) NULL)
+    ThrowImageException(contrast_image);
+  /*
+    Sigmoidal non-linearity contrast control.
+  */
+  contrast_view=NewImageView(contrast_image);
+  if (contrast_view == (ImageView *) NULL)
+    ThrowImageException(contrast_image);
+  status=UpdateImageViewIterator(contrast_view,SigmoidalContrast,(void *) NULL);
+  if (status == MagickFalse)
+    ThrowImageException(contrast_image);
+  contrast_view=DestroyImageView(contrast_view);
+  /*
+    Write the image then destroy it.
+  */
+  status=WriteImages(image_info,contrast_image,argv[2],exception);
+  if (status == MagickFalse)
+    ThrowImageException(contrast_image);
+  contrast_image=DestroyImage(contrast_image);
+  exception=DestroyExceptionInfo(exception);
+  image_info=DestroyImageInfo(image_info);
+  MagickCoreTerminus();
+  return(0);
+}