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 1999-2011 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/colormap.h"
  48 #include "magick/colorspace.h"
  49 #include "magick/exception.h"
  50 #include "magick/exception-private.h"
  51 #include "magick/image.h"
  52 #include "magick/image-private.h"
  53 #include "magick/list.h"
  54 #include "magick/magick.h"
  55 #include "magick/memory_.h"
  56 #include "magick/monitor.h"
  57 #include "magick/monitor-private.h"
  58 #include "magick/quantum-private.h"
  59 #include "magick/static.h"
  60 #include "magick/string_.h"
  61 #include "magick/module.h"
  62 \f
  63 /*
  64   Forward declarations.
  65 */
  66 static MagickBooleanType
  67   WriteARTImage(const ImageInfo *,Image *);
  68 \f
  69 /*
  70 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  71 %                                                                             %
  72 %                                                                             %
  73 %                                                                             %
  74 %   R e a d A R T I m a g e                                                   %
  75 %                                                                             %
  76 %                                                                             %
  77 %                                                                             %
  78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  79 %
  80 %  ReadARTImage() reads an image of raw bits in LSB order and returns it.
  81 %  It allocates the memory necessary for the new Image structure and returns
  82 %  a pointer to the new image.
  83 %
  84 %  The format of the ReadARTImage method is:
  85 %
  86 %      Image *ReadARTImage(const ImageInfo *image_info,
  87 %        ExceptionInfo *exception)
  88 %
  89 %  A description of each parameter follows:
  90 %
  91 %    o image_info: the image info.
  92 %
  93 %    o exception: return any errors or warnings in this structure.
  94 %
  95 */
  96 static Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
  97 {
  98   Image
  99     *image;
 100
 101   QuantumInfo
 102     *quantum_info;
 103
 104   QuantumType
 105     quantum_type;
 106
 107   MagickBooleanType
 108     status;
 109
 110   size_t
 111     length;
 112
 113   ssize_t
 114     count,
 115     y;
 116
 117   unsigned char
 118     *pixels;
 119
 120   /*
 121     Open image file.
 122   */
 123   assert(image_info != (const ImageInfo *) NULL);
 124   assert(image_info->signature == MagickSignature);
 125   if (image_info->debug != MagickFalse)
 126     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 127       image_info->filename);
 128   assert(exception != (ExceptionInfo *) NULL);
 129   assert(exception->signature == MagickSignature);
 130   image=AcquireImage(image_info);
 131   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 132   if (status == MagickFalse)
 133     {
 134       image=DestroyImageList(image);
 135       return((Image *) NULL);
 136     }
 137   image->depth=1;
 138   image->endian=MSBEndian;
 139   (void) ReadBlobLSBShort(image);
 140   image->columns=(size_t) ReadBlobLSBShort(image);
 141   (void) ReadBlobLSBShort(image);
 142   image->rows=(size_t) ReadBlobLSBShort(image);
 143   /*
 144     Initialize image colormap.
 145   */
 146   if (AcquireImageColormap(image,2) == MagickFalse)
 147     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 148   if (image_info->ping != MagickFalse)
 149     {
 150       (void) CloseBlob(image);
 151       return(GetFirstImageInList(image));
 152     }
 153   /*
 154     Convert bi-level image to pixel packets.
 155   */
 156   quantum_type=IndexQuantum;
 157   quantum_info=AcquireQuantumInfo(image_info,image);
 158   if (quantum_info == (QuantumInfo *) NULL)
 159     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 160   pixels=GetQuantumPixels(quantum_info);
 161   length=GetQuantumExtent(image,quantum_info,quantum_type);
 162   for (y=0; y < (ssize_t) image->rows; y++)
 163   {
 164     register PixelPacket
 165       *restrict q;
 166
 167     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 168     if (q == (PixelPacket *) NULL)
 169       break;
 170     count=ReadBlob(image,length,pixels);
 171     if (count != (ssize_t) length)
 172       ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 173     (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 174       quantum_type,pixels,exception);
 175     count=ReadBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 176     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 177       break;
 178     if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
 179       break;
 180   }
 181   SetQuantumImageType(image,quantum_type);
 182   quantum_info=DestroyQuantumInfo(quantum_info);
 183   if (EOFBlob(image) != MagickFalse)
 184     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 185       image->filename);
 186   (void) CloseBlob(image);
 187   return(GetFirstImageInList(image));
 188 }
 189 \f
 190 /*
 191 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 192 %                                                                             %
 193 %                                                                             %
 194 %                                                                             %
 195 %   R e g i s t e r A R T I m a g e                                           %
 196 %                                                                             %
 197 %                                                                             %
 198 %                                                                             %
 199 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 200 %
 201 %  RegisterARTImage() adds attributes for the ART image format to
 202 %  the list of supported formats.  The attributes include the image format
 203 %  tag, a method to read and/or write the format, whether the format
 204 %  supports the saving of more than one frame to the same file or blob,
 205 %  whether the format supports native in-memory I/O, and a brief
 206 %  description of the format.
 207 %
 208 %  The format of the RegisterARTImage method is:
 209 %
 210 %      size_t RegisterARTImage(void)
 211 %
 212 */
 213 ModuleExport size_t RegisterARTImage(void)
 214 {
 215   MagickInfo
 216     *entry;
 217
 218   entry=SetMagickInfo("ART");
 219   entry->decoder=(DecodeImageHandler *) ReadARTImage;
 220   entry->encoder=(EncodeImageHandler *) WriteARTImage;
 221   entry->raw=MagickTrue;
 222   entry->adjoin=MagickFalse;
 223   entry->description=ConstantString("PFS: 1st Publisher Clip Art");
 224   entry->module=ConstantString("ART");
 225   (void) RegisterMagickInfo(entry);
 226   return(MagickImageCoderSignature);
 227 }
 228 \f
 229 /*
 230 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 231 %                                                                             %
 232 %                                                                             %
 233 %                                                                             %
 234 %   U n r e g i s t e r A R T I m a g e                                       %
 235 %                                                                             %
 236 %                                                                             %
 237 %                                                                             %
 238 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 239 %
 240 %  UnregisterARTImage() removes format registrations made by the
 241 %  ART module from the list of supported formats.
 242 %
 243 %  The format of the UnregisterARTImage method is:
 244 %
 245 %      UnregisterARTImage(void)
 246 %
 247 */
 248 ModuleExport void UnregisterARTImage(void)
 249 {
 250   (void) UnregisterMagickInfo("ART");
 251 }
 252 \f
 253 /*
 254 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 255 %                                                                             %
 256 %                                                                             %
 257 %                                                                             %
 258 %   W r i t e A R T I m a g e                                                 %
 259 %                                                                             %
 260 %                                                                             %
 261 %                                                                             %
 262 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 263 %
 264 %  WriteARTImage() writes an image of raw bits in LSB order to a file.
 265 %
 266 %  The format of the WriteARTImage method is:
 267 %
 268 %      MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image)
 269 %
 270 %  A description of each parameter follows.
 271 %
 272 %    o image_info: the image info.
 273 %
 274 %    o image:  The image.
 275 %
 276 */
 277 static MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image)
 278 {
 279   MagickBooleanType
 280     status;
 281
 282   QuantumInfo
 283     *quantum_info;
 284
 285   register const PixelPacket
 286     *p;
 287
 288   ssize_t
 289     count;
 290
 291   size_t
 292     length,
 293     y;
 294
 295   unsigned char
 296     *pixels;
 297
 298   /*
 299     Open output image file.
 300   */
 301   assert(image_info != (const ImageInfo *) NULL);
 302   assert(image_info->signature == MagickSignature);
 303   assert(image != (Image *) NULL);
 304   assert(image->signature == MagickSignature);
 305   if (image->debug != MagickFalse)
 306     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 307   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
 308   if (status == MagickFalse)
 309     return(status);
 310   if ((image->columns > 65535UL) || (image->rows > 65535UL))
 311     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 312   image->endian=MSBEndian;
 313   image->depth=1;
 314   (void) WriteBlobLSBShort(image,0);
 315   (void) WriteBlobLSBShort(image,(unsigned short) image->columns);
 316   (void) WriteBlobLSBShort(image,0);
 317   (void) WriteBlobLSBShort(image,(unsigned short) image->rows);
 318   if (image->colorspace != RGBColorspace)
 319     (void) TransformImageColorspace(image,RGBColorspace);
 320   length=(image->columns+7)/8;
 321   pixels=(unsigned char *) AcquireQuantumMemory(length,sizeof(*pixels));
 322   if (pixels == (unsigned char *) NULL)
 323     ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 324   /*
 325     Convert image to a bi-level image.
 326   */
 327   (void) SetImageType(image,BilevelType);
 328   quantum_info=AcquireQuantumInfo(image_info,image);
 329   for (y=0; y < (ssize_t) image->rows; y++)
 330   {
 331     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
 332     if (p == (const PixelPacket *) NULL)
 333       break;
 334     (void) ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info,
 335       GrayQuantum,pixels,&image->exception);
 336     count=WriteBlob(image,length,pixels);
 337     if (count != (ssize_t) length)
 338       ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
 339     count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 340     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 341       image->rows);
 342     if (status == MagickFalse)
 343       break;
 344   }
 345   quantum_info=DestroyQuantumInfo(quantum_info);
 346   pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 347   (void) CloseBlob(image);
 348   return(MagickTrue);
 349 }