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 %                                   Cristy                                    %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2018 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 %    https://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 "MagickCore/studio.h"
  43 #include "MagickCore/attribute.h"
  44 #include "MagickCore/blob.h"
  45 #include "MagickCore/blob-private.h"
  46 #include "MagickCore/cache.h"
  47 #include "MagickCore/color-private.h"
  48 #include "MagickCore/colormap.h"
  49 #include "MagickCore/colorspace.h"
  50 #include "MagickCore/colorspace-private.h"
  51 #include "MagickCore/exception.h"
  52 #include "MagickCore/exception-private.h"
  53 #include "MagickCore/image.h"
  54 #include "MagickCore/image-private.h"
  55 #include "MagickCore/list.h"
  56 #include "MagickCore/magick.h"
  57 #include "MagickCore/memory_.h"
  58 #include "MagickCore/monitor.h"
  59 #include "MagickCore/monitor-private.h"
  60 #include "MagickCore/quantum-private.h"
  61 #include "MagickCore/static.h"
  62 #include "MagickCore/string_.h"
  63 #include "MagickCore/module.h"
  64 \f
  65 /*
  66   Forward declarations.
  67 */
  68 static MagickBooleanType
  69   WriteARTImage(const ImageInfo *,Image *,ExceptionInfo *);
  70 \f
  71 /*
  72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  73 %                                                                             %
  74 %                                                                             %
  75 %                                                                             %
  76 %   R e a d A R T I m a g e                                                   %
  77 %                                                                             %
  78 %                                                                             %
  79 %                                                                             %
  80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  81 %
  82 %  ReadARTImage() reads an image of raw bits in LSB order and returns it.
  83 %  It allocates the memory necessary for the new Image structure and returns
  84 %  a pointer to the new image.
  85 %
  86 %  The format of the ReadARTImage method is:
  87 %
  88 %      Image *ReadARTImage(const ImageInfo *image_info,
  89 %        ExceptionInfo *exception)
  90 %
  91 %  A description of each parameter follows:
  92 %
  93 %    o image_info: the image info.
  94 %
  95 %    o exception: return any errors or warnings in this structure.
  96 %
  97 */
  98 static Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
  99 {
 100   const unsigned char
 101     *pixels;
 102
 103   Image
 104     *image;
 105
 106   QuantumInfo
 107     *quantum_info;
 108
 109   MagickBooleanType
 110     status;
 111
 112   size_t
 113     length;
 114
 115   ssize_t
 116     count,
 117     y;
 118
 119   /*
 120     Open image file.
 121   */
 122   assert(image_info != (const ImageInfo *) NULL);
 123   assert(image_info->signature == MagickCoreSignature);
 124   if (image_info->debug != MagickFalse)
 125     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 126       image_info->filename);
 127   assert(exception != (ExceptionInfo *) NULL);
 128   assert(exception->signature == MagickCoreSignature);
 129   image=AcquireImage(image_info,exception);
 130   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 131   if (status == MagickFalse)
 132     {
 133       image=DestroyImageList(image);
 134       return((Image *) NULL);
 135     }
 136   image->depth=1;
 137   image->endian=MSBEndian;
 138   (void) ReadBlobLSBShort(image);
 139   image->columns=(size_t) ReadBlobLSBShort(image);
 140   (void) ReadBlobLSBShort(image);
 141   image->rows=(size_t) ReadBlobLSBShort(image);
 142   if ((image->columns == 0) || (image->rows == 0))
 143     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 144   if (image_info->ping != MagickFalse)
 145     {
 146       (void) CloseBlob(image);
 147       return(GetFirstImageInList(image));
 148     }
 149   status=SetImageExtent(image,image->columns,image->rows,exception);
 150   if (status == MagickFalse)
 151     return(DestroyImageList(image));
 152   /*
 153     Convert bi-level image to pixel packets.
 154   */
 155   SetImageColorspace(image,GRAYColorspace,exception);
 156   quantum_info=AcquireQuantumInfo(image_info,image);
 157   if (quantum_info == (QuantumInfo *) NULL)
 158     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 159   length=GetQuantumExtent(image,quantum_info,GrayQuantum);
 160   for (y=0; y < (ssize_t) image->rows; y++)
 161   {
 162     register Quantum
 163       *magick_restrict q;
 164
 165     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 166     if (q == (Quantum *) NULL)
 167       break;
 168     pixels=(const unsigned char *) ReadBlobStream(image,length,
 169       GetQuantumPixels(quantum_info),&count);
 170     if (count != (ssize_t) length)
 171       break;
 172     (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 173       GrayQuantum,pixels,exception);
 174     pixels=(const unsigned char *) ReadBlobStream(image,(size_t) (-(ssize_t)
 175       length) & 0x01,GetQuantumPixels(quantum_info),&count);
 176     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 177       break;
 178     if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
 179       break;
 180   }
 181   SetQuantumImageType(image,GrayQuantum);
 182   quantum_info=DestroyQuantumInfo(quantum_info);
 183   if (y < (ssize_t) image->rows)
 184     ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 185   if (EOFBlob(image) != MagickFalse)
 186     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 187       image->filename);
 188   (void) CloseBlob(image);
 189   return(GetFirstImageInList(image));
 190 }
 191 \f
 192 /*
 193 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 194 %                                                                             %
 195 %                                                                             %
 196 %                                                                             %
 197 %   R e g i s t e r A R T I m a g e                                           %
 198 %                                                                             %
 199 %                                                                             %
 200 %                                                                             %
 201 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 202 %
 203 %  RegisterARTImage() adds attributes for the ART image format to
 204 %  the list of supported formats.  The attributes include the image format
 205 %  tag, a method to read and/or write the format, whether the format
 206 %  supports the saving of more than one frame to the same file or blob,
 207 %  whether the format supports native in-memory I/O, and a brief
 208 %  description of the format.
 209 %
 210 %  The format of the RegisterARTImage method is:
 211 %
 212 %      size_t RegisterARTImage(void)
 213 %
 214 */
 215 ModuleExport size_t RegisterARTImage(void)
 216 {
 217   MagickInfo
 218     *entry;
 219
 220   entry=AcquireMagickInfo("ART","ART","PFS: 1st Publisher Clip Art");
 221   entry->decoder=(DecodeImageHandler *) ReadARTImage;
 222   entry->encoder=(EncodeImageHandler *) WriteARTImage;
 223   entry->flags|=CoderRawSupportFlag;
 224   entry->flags^=CoderAdjoinFlag;
 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,
 269 %        Image *image,ExceptionInfo *exception)
 270 %
 271 %  A description of each parameter follows.
 272 %
 273 %    o image_info: the image info.
 274 %
 275 %    o image:  The image.
 276 %
 277 %    o exception: return any errors or warnings in this structure.
 278 %
 279 */
 280 static MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image,
 281   ExceptionInfo *exception)
 282 {
 283   MagickBooleanType
 284     status;
 285
 286   QuantumInfo
 287     *quantum_info;
 288
 289   register const Quantum
 290     *p;
 291
 292   size_t
 293     length;
 294
 295   ssize_t
 296     count,
 297     y;
 298
 299   unsigned char
 300     *pixels;
 301
 302   /*
 303     Open output image file.
 304   */
 305   assert(image_info != (const ImageInfo *) NULL);
 306   assert(image_info->signature == MagickCoreSignature);
 307   assert(image != (Image *) NULL);
 308   assert(image->signature == MagickCoreSignature);
 309   if (image->debug != MagickFalse)
 310     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 311   assert(exception != (ExceptionInfo *) NULL);
 312   assert(exception->signature == MagickCoreSignature);
 313   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 314   if (status == MagickFalse)
 315     return(status);
 316   if ((image->columns > 65535UL) || (image->rows > 65535UL))
 317     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 318   (void) TransformImageColorspace(image,sRGBColorspace,exception);
 319   (void) SetImageType(image,BilevelType,exception);
 320   image->endian=MSBEndian;
 321   image->depth=1;
 322   (void) WriteBlobLSBShort(image,0);
 323   (void) WriteBlobLSBShort(image,(unsigned short) image->columns);
 324   (void) WriteBlobLSBShort(image,0);
 325   (void) WriteBlobLSBShort(image,(unsigned short) image->rows);
 326   quantum_info=AcquireQuantumInfo(image_info,image);
 327   if (quantum_info == (QuantumInfo *) NULL)
 328     ThrowWriterException(ImageError,"MemoryAllocationFailed");
 329   pixels=(unsigned char *) GetQuantumPixels(quantum_info);
 330   for (y=0; y < (ssize_t) image->rows; y++)
 331   {
 332     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 333     if (p == (const Quantum *) NULL)
 334       break;
 335     length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 336       GrayQuantum,pixels,exception);
 337     count=WriteBlob(image,length,pixels);
 338     if (count != (ssize_t) length)
 339       break;
 340     count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 341     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 342       image->rows);
 343     if (status == MagickFalse)
 344       break;
 345   }
 346   quantum_info=DestroyQuantumInfo(quantum_info);
 347   if (y < (ssize_t) image->rows)
 348     ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
 349   (void) CloseBlob(image);
 350   return(status);
 351 }