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 1999-2012 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 "MagickCore/studio.h"
  43 #include "MagickCore/blob.h"
  44 #include "MagickCore/blob-private.h"
  45 #include "MagickCore/cache.h"
  46 #include "MagickCore/color-private.h"
  47 #include "MagickCore/colormap.h"
  48 #include "MagickCore/colorspace.h"
  49 #include "MagickCore/colorspace-private.h"
  50 #include "MagickCore/exception.h"
  51 #include "MagickCore/exception-private.h"
  52 #include "MagickCore/image.h"
  53 #include "MagickCore/image-private.h"
  54 #include "MagickCore/list.h"
  55 #include "MagickCore/magick.h"
  56 #include "MagickCore/memory_.h"
  57 #include "MagickCore/monitor.h"
  58 #include "MagickCore/monitor-private.h"
  59 #include "MagickCore/quantum-private.h"
  60 #include "MagickCore/static.h"
  61 #include "MagickCore/string_.h"
  62 #include "MagickCore/module.h"
  63 \f
  64 /*
  65   Forward declarations.
  66 */
  67 static MagickBooleanType
  68   WriteARTImage(const ImageInfo *,Image *,ExceptionInfo *);
  69 \f
  70 /*
  71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  72 %                                                                             %
  73 %                                                                             %
  74 %                                                                             %
  75 %   R e a d A R T I m a g e                                                   %
  76 %                                                                             %
  77 %                                                                             %
  78 %                                                                             %
  79 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  80 %
  81 %  ReadARTImage() reads an image of raw bits in LSB order and returns it.
  82 %  It allocates the memory necessary for the new Image structure and returns
  83 %  a pointer to the new image.
  84 %
  85 %  The format of the ReadARTImage method is:
  86 %
  87 %      Image *ReadARTImage(const ImageInfo *image_info,
  88 %        ExceptionInfo *exception)
  89 %
  90 %  A description of each parameter follows:
  91 %
  92 %    o image_info: the image info.
  93 %
  94 %    o exception: return any errors or warnings in this structure.
  95 %
  96 */
  97 static Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
  98 {
  99   Image
 100     *image;
 101
 102   QuantumInfo
 103     *quantum_info;
 104
 105   MagickBooleanType
 106     status;
 107
 108   size_t
 109     length;
 110
 111   ssize_t
 112     count,
 113     y;
 114
 115   unsigned char
 116     *pixels;
 117
 118   /*
 119     Open image file.
 120   */
 121   assert(image_info != (const ImageInfo *) NULL);
 122   assert(image_info->signature == MagickSignature);
 123   if (image_info->debug != MagickFalse)
 124     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 125       image_info->filename);
 126   assert(exception != (ExceptionInfo *) NULL);
 127   assert(exception->signature == MagickSignature);
 128   image=AcquireImage(image_info,exception);
 129   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 130   if (status == MagickFalse)
 131     {
 132       image=DestroyImageList(image);
 133       return((Image *) NULL);
 134     }
 135   image->colorspace=GRAYColorspace;
 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_info->ping != MagickFalse)
 143     {
 144       (void) CloseBlob(image);
 145       return(GetFirstImageInList(image));
 146     }
 147   /*
 148     Convert bi-level image to pixel packets.
 149   */
 150   quantum_info=AcquireQuantumInfo(image_info,image);
 151   if (quantum_info == (QuantumInfo *) NULL)
 152     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 153   pixels=GetQuantumPixels(quantum_info);
 154   length=GetQuantumExtent(image,quantum_info,GrayQuantum);
 155   for (y=0; y < (ssize_t) image->rows; y++)
 156   {
 157     register Quantum
 158       *restrict q;
 159
 160     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 161     if (q == (Quantum *) NULL)
 162       break;
 163     count=ReadBlob(image,length,pixels);
 164     if (count != (ssize_t) length)
 165       ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 166     (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 167       GrayQuantum,pixels,exception);
 168     count=ReadBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 169     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 170       break;
 171     if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
 172       break;
 173   }
 174   SetQuantumImageType(image,GrayQuantum);
 175   quantum_info=DestroyQuantumInfo(quantum_info);
 176   if (EOFBlob(image) != MagickFalse)
 177     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 178       image->filename);
 179   (void) CloseBlob(image);
 180   return(GetFirstImageInList(image));
 181 }
 182 \f
 183 /*
 184 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 185 %                                                                             %
 186 %                                                                             %
 187 %                                                                             %
 188 %   R e g i s t e r A R T I m a g e                                           %
 189 %                                                                             %
 190 %                                                                             %
 191 %                                                                             %
 192 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 193 %
 194 %  RegisterARTImage() adds attributes for the ART image format to
 195 %  the list of supported formats.  The attributes include the image format
 196 %  tag, a method to read and/or write the format, whether the format
 197 %  supports the saving of more than one frame to the same file or blob,
 198 %  whether the format supports native in-memory I/O, and a brief
 199 %  description of the format.
 200 %
 201 %  The format of the RegisterARTImage method is:
 202 %
 203 %      size_t RegisterARTImage(void)
 204 %
 205 */
 206 ModuleExport size_t RegisterARTImage(void)
 207 {
 208   MagickInfo
 209     *entry;
 210
 211   entry=SetMagickInfo("ART");
 212   entry->decoder=(DecodeImageHandler *) ReadARTImage;
 213   entry->encoder=(EncodeImageHandler *) WriteARTImage;
 214   entry->raw=MagickTrue;
 215   entry->adjoin=MagickFalse;
 216   entry->description=ConstantString("PFS: 1st Publisher Clip Art");
 217   entry->module=ConstantString("ART");
 218   (void) RegisterMagickInfo(entry);
 219   return(MagickImageCoderSignature);
 220 }
 221 \f
 222 /*
 223 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 224 %                                                                             %
 225 %                                                                             %
 226 %                                                                             %
 227 %   U n r e g i s t e r A R T I m a g e                                       %
 228 %                                                                             %
 229 %                                                                             %
 230 %                                                                             %
 231 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 232 %
 233 %  UnregisterARTImage() removes format registrations made by the
 234 %  ART module from the list of supported formats.
 235 %
 236 %  The format of the UnregisterARTImage method is:
 237 %
 238 %      UnregisterARTImage(void)
 239 %
 240 */
 241 ModuleExport void UnregisterARTImage(void)
 242 {
 243   (void) UnregisterMagickInfo("ART");
 244 }
 245 \f
 246 /*
 247 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 248 %                                                                             %
 249 %                                                                             %
 250 %                                                                             %
 251 %   W r i t e A R T I m a g e                                                 %
 252 %                                                                             %
 253 %                                                                             %
 254 %                                                                             %
 255 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 256 %
 257 %  WriteARTImage() writes an image of raw bits in LSB order to a file.
 258 %
 259 %  The format of the WriteARTImage method is:
 260 %
 261 %      MagickBooleanType WriteARTImage(const ImageInfo *image_info,
 262 %        Image *image,ExceptionInfo *exception)
 263 %
 264 %  A description of each parameter follows.
 265 %
 266 %    o image_info: the image info.
 267 %
 268 %    o image:  The image.
 269 %
 270 %    o exception: return any errors or warnings in this structure.
 271 %
 272 */
 273 static MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image,
 274   ExceptionInfo *exception)
 275 {
 276   MagickBooleanType
 277     status;
 278
 279   QuantumInfo
 280     *quantum_info;
 281
 282   register const Quantum
 283     *p;
 284
 285   size_t
 286     length;
 287
 288   ssize_t
 289     count,
 290     y;
 291
 292   unsigned char
 293     *pixels;
 294
 295   /*
 296     Open output image file.
 297   */
 298   assert(image_info != (const ImageInfo *) NULL);
 299   assert(image_info->signature == MagickSignature);
 300   assert(image != (Image *) NULL);
 301   assert(image->signature == MagickSignature);
 302   if (image->debug != MagickFalse)
 303     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 304   assert(exception != (ExceptionInfo *) NULL);
 305   assert(exception->signature == MagickSignature);
 306   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 307   if (status == MagickFalse)
 308     return(status);
 309   if ((image->columns > 65535UL) || (image->rows > 65535UL))
 310     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 311   if (IssRGBColorspace(image->colorspace) == MagickFalse)
 312     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 313   (void) SetImageType(image,BilevelType,exception);
 314   image->endian=MSBEndian;
 315   image->depth=1;
 316   (void) WriteBlobLSBShort(image,0);
 317   (void) WriteBlobLSBShort(image,(unsigned short) image->columns);
 318   (void) WriteBlobLSBShort(image,0);
 319   (void) WriteBlobLSBShort(image,(unsigned short) image->rows);
 320   quantum_info=AcquireQuantumInfo(image_info,image);
 321   pixels=GetQuantumPixels(quantum_info);
 322   for (y=0; y < (ssize_t) image->rows; y++)
 323   {
 324     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 325     if (p == (const Quantum *) NULL)
 326       break;
 327     length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 328       GrayQuantum,pixels,exception);
 329     count=WriteBlob(image,length,pixels);
 330     if (count != (ssize_t) length)
 331       ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
 332     count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 333     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 334       image->rows);
 335     if (status == MagickFalse)
 336       break;
 337   }
 338   quantum_info=DestroyQuantumInfo(quantum_info);
 339   (void) CloseBlob(image);
 340   return(status);
 341 }