granicus.if.org Git - imagemagick/blob - coders/art.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                             AAA   RRRR   TTTTT                              %
   7 %                            A   A  R   R    T                                %
   8 %                            AAAAA  RRRR     T                                %
   9 %                            A   A  R R      T                                %
  10 %                            A   A  R  R     T                                %
  11 %                                                                             %
  12 %                                                                             %
  13 %                 Support PFS: 1st Publisher Clip Art Format                  %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "magick/studio.h"
  43 #include "magick/blob.h"
  44 #include "magick/blob-private.h"
  45 #include "magick/cache.h"
  46 #include "magick/color-private.h"
  47 #include "magick/colorspace.h"
  48 #include "magick/exception.h"
  49 #include "magick/exception-private.h"
  50 #include "magick/image.h"
  51 #include "magick/image-private.h"
  52 #include "magick/list.h"
  53 #include "magick/magick.h"
  54 #include "magick/memory_.h"
  55 #include "magick/monitor.h"
  56 #include "magick/monitor-private.h"
  57 #include "magick/quantum-private.h"
  58 #include "magick/static.h"
  59 #include "magick/string_.h"
  60 #include "magick/module.h"
  61 \f
  62 /*
  63   Forward declarations.
  64 */
  65 static MagickBooleanType
  66   WriteARTImage(const ImageInfo *,Image *);
  67 \f
  68 /*
  69 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  70 %                                                                             %
  71 %                                                                             %
  72 %                                                                             %
  73 %   R e a d A R T I m a g e                                                   %
  74 %                                                                             %
  75 %                                                                             %
  76 %                                                                             %
  77 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  78 %
  79 %  ReadARTImage() reads an image of raw bits in LSB order and returns it.
  80 %  It allocates the memory necessary for the new Image structure and returns
  81 %  a pointer to the new image.
  82 %
  83 %  The format of the ReadARTImage method is:
  84 %
  85 %      Image *ReadARTImage(const ImageInfo *image_info,
  86 %        ExceptionInfo *exception)
  87 %
  88 %  A description of each parameter follows:
  89 %
  90 %    o image_info: the image info.
  91 %
  92 %    o exception: return any errors or warnings in this structure.
  93 %
  94 */
  95 static Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
  96 {
  97   Image
  98     *image;
  99
 100   long
 101     y;
 102
 103   QuantumInfo
 104     *quantum_info;
 105
 106   QuantumType
 107     quantum_type;
 108
 109   MagickBooleanType
 110     status;
 111
 112   ssize_t
 113     count;
 114
 115   size_t
 116     length;
 117
 118   unsigned char
 119     *pixels;
 120
 121   /*
 122     Open image file.
 123   */
 124   assert(image_info != (const ImageInfo *) NULL);
 125   assert(image_info->signature == MagickSignature);
 126   if (image_info->debug != MagickFalse)
 127     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 128       image_info->filename);
 129   assert(exception != (ExceptionInfo *) NULL);
 130   assert(exception->signature == MagickSignature);
 131   image=AcquireImage(image_info);
 132   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 133   if (status == MagickFalse)
 134     {
 135       image=DestroyImageList(image);
 136       return((Image *) NULL);
 137     }
 138   image->depth=1;
 139   image->endian=MSBEndian;
 140   (void) ReadBlobLSBShort(image);
 141   image->columns=(unsigned long) ReadBlobLSBShort(image);
 142   (void) ReadBlobLSBShort(image);
 143   image->rows=(unsigned long) ReadBlobLSBShort(image);
 144   /*
 145     Initialize image colormap.
 146   */
 147   if (AcquireImageColormap(image,2) == MagickFalse)
 148     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 149   if (image_info->ping != MagickFalse)
 150     {
 151       (void) CloseBlob(image);
 152       return(GetFirstImageInList(image));
 153     }
 154   /*
 155     Convert bi-level image to pixel packets.
 156   */
 157   quantum_type=IndexQuantum;
 158   quantum_info=AcquireQuantumInfo(image_info,image);
 159   if (quantum_info == (QuantumInfo *) NULL)
 160     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 161   pixels=GetQuantumPixels(quantum_info);
 162   length=GetQuantumExtent(image,quantum_info,quantum_type);
 163   for (y=0; y < (long) image->rows; y++)
 164   {
 165     register PixelPacket
 166       *restrict q;
 167
 168     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 169     if (q == (PixelPacket *) NULL)
 170       break;
 171     count=ReadBlob(image,length,pixels);
 172     if (count != (ssize_t) length)
 173       ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 174     (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 175       quantum_type,pixels,exception);
 176     count=ReadBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 177     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 178       break;
 179     if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
 180       break;
 181   }
 182   SetQuantumImageType(image,quantum_type);
 183   quantum_info=DestroyQuantumInfo(quantum_info);
 184   if (EOFBlob(image) != MagickFalse)
 185     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 186       image->filename);
 187   (void) CloseBlob(image);
 188   return(GetFirstImageInList(image));
 189 }
 190 \f
 191 /*
 192 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 193 %                                                                             %
 194 %                                                                             %
 195 %                                                                             %
 196 %   R e g i s t e r A R T I m a g e                                           %
 197 %                                                                             %
 198 %                                                                             %
 199 %                                                                             %
 200 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 201 %
 202 %  RegisterARTImage() adds attributes for the ART image format to
 203 %  the list of supported formats.  The attributes include the image format
 204 %  tag, a method to read and/or write the format, whether the format
 205 %  supports the saving of more than one frame to the same file or blob,
 206 %  whether the format supports native in-memory I/O, and a brief
 207 %  description of the format.
 208 %
 209 %  The format of the RegisterARTImage method is:
 210 %
 211 %      unsigned long RegisterARTImage(void)
 212 %
 213 */
 214 ModuleExport unsigned long RegisterARTImage(void)
 215 {
 216   MagickInfo
 217     *entry;
 218
 219   entry=SetMagickInfo("ART");
 220   entry->decoder=(DecodeImageHandler *) ReadARTImage;
 221   entry->encoder=(EncodeImageHandler *) WriteARTImage;
 222   entry->raw=MagickTrue;
 223   entry->adjoin=MagickFalse;
 224   entry->description=ConstantString("PFS: 1st Publisher Clip Art");
 225   entry->module=ConstantString("ART");
 226   (void) RegisterMagickInfo(entry);
 227   return(MagickImageCoderSignature);
 228 }
 229 \f
 230 /*
 231 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 232 %                                                                             %
 233 %                                                                             %
 234 %                                                                             %
 235 %   U n r e g i s t e r A R T I m a g e                                       %
 236 %                                                                             %
 237 %                                                                             %
 238 %                                                                             %
 239 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 240 %
 241 %  UnregisterARTImage() removes format registrations made by the
 242 %  ART module from the list of supported formats.
 243 %
 244 %  The format of the UnregisterARTImage method is:
 245 %
 246 %      UnregisterARTImage(void)
 247 %
 248 */
 249 ModuleExport void UnregisterARTImage(void)
 250 {
 251   (void) UnregisterMagickInfo("ART");
 252 }
 253 \f
 254 /*
 255 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 256 %                                                                             %
 257 %                                                                             %
 258 %                                                                             %
 259 %   W r i t e A R T I m a g e                                                 %
 260 %                                                                             %
 261 %                                                                             %
 262 %                                                                             %
 263 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 264 %
 265 %  WriteARTImage() writes an image of raw bits in LSB order to a file.
 266 %
 267 %  The format of the WriteARTImage method is:
 268 %
 269 %      MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image)
 270 %
 271 %  A description of each parameter follows.
 272 %
 273 %    o image_info: the image info.
 274 %
 275 %    o image:  The image.
 276 %
 277 */
 278 static MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image)
 279 {
 280   long
 281     y;
 282
 283   MagickBooleanType
 284     status;
 285
 286   QuantumInfo
 287     *quantum_info;
 288
 289   register const PixelPacket
 290     *p;
 291
 292   ssize_t
 293     count;
 294
 295   size_t
 296     length;
 297
 298   unsigned char
 299     *pixels;
 300
 301   /*
 302     Open output image file.
 303   */
 304   assert(image_info != (const ImageInfo *) NULL);
 305   assert(image_info->signature == MagickSignature);
 306   assert(image != (Image *) NULL);
 307   assert(image->signature == MagickSignature);
 308   if (image->debug != MagickFalse)
 309     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 310   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
 311   if (status == MagickFalse)
 312     return(status);
 313   if ((image->columns > 65535UL) || (image->rows > 65535UL))
 314     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 315   image->endian=MSBEndian;
 316   image->depth=1;
 317   (void) WriteBlobLSBShort(image,0);
 318   (void) WriteBlobLSBShort(image,(unsigned short) image->columns);
 319   (void) WriteBlobLSBShort(image,0);
 320   (void) WriteBlobLSBShort(image,(unsigned short) image->rows);
 321   if (image->colorspace != RGBColorspace)
 322     (void) TransformImageColorspace(image,RGBColorspace);
 323   length=(image->columns+7)/8;
 324   pixels=(unsigned char *) AcquireQuantumMemory(length,sizeof(*pixels));
 325   if (pixels == (unsigned char *) NULL)
 326     ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 327   /*
 328     Convert image to a bi-level image.
 329   */
 330   (void) SetImageType(image,BilevelType);
 331   quantum_info=AcquireQuantumInfo(image_info,image);
 332   for (y=0; y < (long) image->rows; y++)
 333   {
 334     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
 335     if (p == (const PixelPacket *) NULL)
 336       break;
 337     (void) ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info,
 338       GrayQuantum,pixels,&image->exception);
 339     count=WriteBlob(image,length,pixels);
 340     if (count != (ssize_t) length)
 341       ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
 342     count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 343     if (SetImageProgress(image,SaveImageTag,y,image->rows) == MagickFalse)
 344       break;
 345   }
 346   quantum_info=DestroyQuantumInfo(quantum_info);
 347   pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 348   (void) CloseBlob(image);
 349   return(MagickTrue);
 350 }