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[imagemagick] / coders / map.c
index a5b43d731a4d03a0b2b6942aae39c9308e19c2e9..a2b7926611c67788a741e056d4ca19b19c3bbf17 100644 (file)
 %                  Read/Write Image Colormaps As An Image File.               %
 %                                                                             %
 %                              Software Design                                %
-%                                John Cristy                                  %
+%                                   Cristy                                    %
 %                                 July 1992                                   %
 %                                                                             %
 %                                                                             %
-%  Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization      %
+%  Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization      %
 %  dedicated to making software imaging solutions freely available.           %
 %                                                                             %
 %  You may not use this file except in compliance with the License.  You may  %
 /*
   Include declarations.
 */
-#include "magick/studio.h"
-#include "magick/attribute.h"
-#include "magick/blob.h"
-#include "magick/blob-private.h"
-#include "magick/cache.h"
-#include "magick/color.h"
-#include "magick/color-private.h"
-#include "magick/colormap.h"
-#include "magick/colormap-private.h"
-#include "magick/colorspace.h"
-#include "magick/exception.h"
-#include "magick/exception-private.h"
-#include "magick/histogram.h"
-#include "magick/image.h"
-#include "magick/image-private.h"
-#include "magick/list.h"
-#include "magick/magick.h"
-#include "magick/memory_.h"
-#include "magick/quantum-private.h"
-#include "magick/static.h"
-#include "magick/statistic.h"
-#include "magick/string_.h"
-#include "magick/module.h"
+#include "MagickCore/studio.h"
+#include "MagickCore/attribute.h"
+#include "MagickCore/blob.h"
+#include "MagickCore/blob-private.h"
+#include "MagickCore/cache.h"
+#include "MagickCore/color.h"
+#include "MagickCore/color-private.h"
+#include "MagickCore/colormap.h"
+#include "MagickCore/colormap-private.h"
+#include "MagickCore/colorspace.h"
+#include "MagickCore/colorspace-private.h"
+#include "MagickCore/exception.h"
+#include "MagickCore/exception-private.h"
+#include "MagickCore/histogram.h"
+#include "MagickCore/image.h"
+#include "MagickCore/image-private.h"
+#include "MagickCore/list.h"
+#include "MagickCore/magick.h"
+#include "MagickCore/memory_.h"
+#include "MagickCore/pixel-accessor.h"
+#include "MagickCore/quantum-private.h"
+#include "MagickCore/static.h"
+#include "MagickCore/statistic.h"
+#include "MagickCore/string_.h"
+#include "MagickCore/module.h"
 \f
 /*
   Forward declarations.
 */
 static MagickBooleanType
-  WriteMAPImage(const ImageInfo *,Image *);
+  WriteMAPImage(const ImageInfo *,Image *,ExceptionInfo *);
 \f
 /*
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -100,44 +102,37 @@ static Image *ReadMAPImage(const ImageInfo *image_info,ExceptionInfo *exception)
   Image
     *image;
 
-  IndexPacket
-    index;
-
-  long
-    y;
-
   MagickBooleanType
     status;
 
-  register IndexPacket
-    *indexes;
+  Quantum
+    index;
 
-  register long
+  register ssize_t
     x;
 
-  register PixelPacket
+  register Quantum
     *q;
 
-  register long
+  register ssize_t
     i;
 
   register unsigned char
     *p;
 
   size_t
-    packet_size;
+    depth,
+    packet_size,
+    quantum;
 
   ssize_t
-    count;
+    count,
+    y;
 
   unsigned char
     *colormap,
     *pixels;
 
-  unsigned long
-    depth,
-    quantum;
-
   /*
     Open image file.
   */
@@ -148,7 +143,7 @@ static Image *ReadMAPImage(const ImageInfo *image_info,ExceptionInfo *exception)
       image_info->filename);
   assert(exception != (ExceptionInfo *) NULL);
   assert(exception->signature == MagickSignature);
-  image=AcquireImage(image_info);
+  image=AcquireImage(image_info,exception);
   if ((image->columns == 0) || (image->rows == 0))
     ThrowReaderException(OptionError,"MustSpecifyImageSize");
   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
@@ -161,8 +156,8 @@ static Image *ReadMAPImage(const ImageInfo *image_info,ExceptionInfo *exception)
     Initialize image structure.
   */
   image->storage_class=PseudoClass;
-  status=AcquireImageColormap(image,(unsigned long)
-    (image->offset != 0 ? image->offset : 256));
+  status=AcquireImageColormap(image,(size_t)
+    (image->offset != 0 ? image->offset : 256),exception);
   if (status == MagickFalse)
     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
   depth=GetImageQuantumDepth(image,MagickTrue);
@@ -183,14 +178,14 @@ static Image *ReadMAPImage(const ImageInfo *image_info,ExceptionInfo *exception)
     ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
   p=colormap;
   if (image->depth <= 8)
-    for (i=0; i < (long) image->colors; i++)
+    for (i=0; i < (ssize_t) image->colors; i++)
     {
       image->colormap[i].red=ScaleCharToQuantum(*p++);
       image->colormap[i].green=ScaleCharToQuantum(*p++);
       image->colormap[i].blue=ScaleCharToQuantum(*p++);
     }
   else
-    for (i=0; i < (long) image->colors; i++)
+    for (i=0; i < (ssize_t) image->colors; i++)
     {
       quantum=(*p++ << 8);
       quantum|=(*p++);
@@ -212,33 +207,34 @@ static Image *ReadMAPImage(const ImageInfo *image_info,ExceptionInfo *exception)
     Read image pixels.
   */
   packet_size=(size_t) (depth/8);
-  for (y=0; y < (long) image->rows; y++)
+  for (y=0; y < (ssize_t) image->rows; y++)
   {
     p=pixels;
     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
-    if (q == (PixelPacket *) NULL)
+    if (q == (Quantum *) NULL)
       break;
-    indexes=GetAuthenticIndexQueue(image);
     count=ReadBlob(image,(size_t) packet_size*image->columns,pixels);
     if (count != (ssize_t) (packet_size*image->columns))
       break;
-    for (x=0; x < (long) image->columns; x++)
+    for (x=0; x < (ssize_t) image->columns; x++)
     {
-      index=ConstrainColormapIndex(image,*p);
+      index=ConstrainColormapIndex(image,*p,exception);
       p++;
       if (image->colors > 256)
         {
-          index=ConstrainColormapIndex(image,((unsigned long) index << 8)+(*p));
+          index=ConstrainColormapIndex(image,((size_t) index << 8)+(*p),
+            exception);
           p++;
         }
-      indexes[x]=(IndexPacket) index;
-      *q++=image->colormap[(long) index];
+      SetPixelIndex(image,index,q);
+      SetPixelInfoPixel(image,image->colormap+(ssize_t) index,q);
+      q+=GetPixelChannels(image);
     }
     if (SyncAuthenticPixels(image,exception) == MagickFalse)
       break;
   }
   pixels=(unsigned char *) RelinquishMagickMemory(pixels);
-  if (y < (long) image->rows)
+  if (y < (ssize_t) image->rows)
     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
       image->filename);
   (void) CloseBlob(image);
@@ -265,10 +261,10 @@ static Image *ReadMAPImage(const ImageInfo *image_info,ExceptionInfo *exception)
 %
 %  The format of the RegisterMAPImage method is:
 %
-%      unsigned long RegisterMAPImage(void)
+%      size_t RegisterMAPImage(void)
 %
 */
-ModuleExport unsigned long RegisterMAPImage(void)
+ModuleExport size_t RegisterMAPImage(void)
 {
   MagickInfo
     *entry;
@@ -326,7 +322,8 @@ ModuleExport void UnregisterMAPImage(void)
 %
 %  The format of the WriteMAPImage method is:
 %
-%      MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
+%      MagickBooleanType WriteMAPImage(const ImageInfo *image_info,
+%        Image *image,ExceptionInfo *exception)
 %
 %  A description of each parameter follows.
 %
@@ -334,23 +331,19 @@ ModuleExport void UnregisterMAPImage(void)
 %
 %    o image:  The image.
 %
+%    o exception: return any errors or warnings in this structure.
 %
 */
-static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
+static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image,
+  ExceptionInfo *exception)
 {
-  long
-    y;
-
   MagickBooleanType
     status;
 
-  register const IndexPacket
-    *indexes;
-
-  register const PixelPacket
+  register const Quantum
     *p;
 
-  register long
+  register ssize_t
     i,
     x;
 
@@ -358,15 +351,16 @@ static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
     *q;
 
   size_t
+    depth,
     packet_size;
 
+  ssize_t
+    y;
+
   unsigned char
     *colormap,
     *pixels;
 
-  unsigned long
-    depth;
-
   /*
     Open output image file.
   */
@@ -376,16 +370,17 @@ static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
   assert(image->signature == MagickSignature);
   if (image->debug != MagickFalse)
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
-  status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
+  assert(exception != (ExceptionInfo *) NULL);
+  assert(exception->signature == MagickSignature);
+  status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
   if (status == MagickFalse)
     return(status);
-  if (image->colorspace != RGBColorspace)
-    (void) TransformImageColorspace(image,RGBColorspace);
+  (void) TransformImageColorspace(image,sRGBColorspace,exception);
   /*
     Allocate colormap.
   */
-  if (IsPaletteImage(image,&image->exception) == MagickFalse)
-    (void) SetImageType(image,PaletteType);
+  if (IsPaletteImage(image,exception) == MagickFalse)
+    (void) SetImageType(image,PaletteType,exception);
   depth=GetImageQuantumDepth(image,MagickTrue);
   packet_size=(size_t) (depth/8);
   pixels=(unsigned char *) AcquireQuantumMemory(image->columns,packet_size*
@@ -401,20 +396,20 @@ static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
   */
   q=colormap;
   if (image->depth <= 8)
-    for (i=0; i < (long) image->colors; i++)
+    for (i=0; i < (ssize_t) image->colors; i++)
     {
       *q++=(unsigned char) image->colormap[i].red;
       *q++=(unsigned char) image->colormap[i].green;
       *q++=(unsigned char) image->colormap[i].blue;
     }
   else
-    for (i=0; i < (long) image->colors; i++)
+    for (i=0; i < (ssize_t) image->colors; i++)
     {
-      *q++=(unsigned char) ((unsigned long) image->colormap[i].red >> 8);
+      *q++=(unsigned char) ((size_t) image->colormap[i].red >> 8);
       *q++=(unsigned char) image->colormap[i].red;
-      *q++=(unsigned char) ((unsigned long) image->colormap[i].green >> 8);
+      *q++=(unsigned char) ((size_t) image->colormap[i].green >> 8);
       *q++=(unsigned char) image->colormap[i].green;
-      *q++=(unsigned char) ((unsigned long) image->colormap[i].blue >> 8);
+      *q++=(unsigned char) ((size_t) image->colormap[i].blue >> 8);
       *q++=(unsigned char) image->colormap[i].blue;
     }
   (void) WriteBlob(image,packet_size*image->colors,colormap);
@@ -422,18 +417,18 @@ static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
   /*
     Write image pixels to file.
   */
-  for (y=0; y < (long) image->rows; y++)
+  for (y=0; y < (ssize_t) image->rows; y++)
   {
-    p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
-    if (p == (const PixelPacket *) NULL)
+    p=GetVirtualPixels(image,0,y,image->columns,1,exception);
+    if (p == (const Quantum *) NULL)
       break;
-    indexes=GetVirtualIndexQueue(image);
     q=pixels;
-    for (x=0; x < (long) image->columns; x++)
+    for (x=0; x < (ssize_t) image->columns; x++)
     {
       if (image->colors > 256)
-        *q++=(unsigned char) ((unsigned long) indexes[x] >> 8);
-      *q++=(unsigned char) indexes[x];
+        *q++=(unsigned char) ((size_t) GetPixelIndex(image,p) >> 8);
+      *q++=(unsigned char) GetPixelIndex(image,p);
+      p+=GetPixelChannels(image);
     }
     (void) WriteBlob(image,(size_t) (q-pixels),pixels);
   }