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 1999-2016 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/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       ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 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 (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=AcquireMagickInfo("ART","ART","PFS: 1st Publisher Clip Art");
 219   entry->decoder=(DecodeImageHandler *) ReadARTImage;
 220   entry->encoder=(EncodeImageHandler *) WriteARTImage;
 221   entry->flags|=CoderRawSupportFlag;
 222   entry->flags^=CoderAdjoinFlag;
 223   (void) RegisterMagickInfo(entry);
 224   return(MagickImageCoderSignature);
 225 }
 226 \f
 227 /*
 228 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 229 %                                                                             %
 230 %                                                                             %
 231 %                                                                             %
 232 %   U n r e g i s t e r A R T I m a g e                                       %
 233 %                                                                             %
 234 %                                                                             %
 235 %                                                                             %
 236 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 237 %
 238 %  UnregisterARTImage() removes format registrations made by the
 239 %  ART module from the list of supported formats.
 240 %
 241 %  The format of the UnregisterARTImage method is:
 242 %
 243 %      UnregisterARTImage(void)
 244 %
 245 */
 246 ModuleExport void UnregisterARTImage(void)
 247 {
 248   (void) UnregisterMagickInfo("ART");
 249 }
 250 \f
 251 /*
 252 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 253 %                                                                             %
 254 %                                                                             %
 255 %                                                                             %
 256 %   W r i t e A R T I m a g e                                                 %
 257 %                                                                             %
 258 %                                                                             %
 259 %                                                                             %
 260 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 261 %
 262 %  WriteARTImage() writes an image of raw bits in LSB order to a file.
 263 %
 264 %  The format of the WriteARTImage method is:
 265 %
 266 %      MagickBooleanType WriteARTImage(const ImageInfo *image_info,
 267 %        Image *image,ExceptionInfo *exception)
 268 %
 269 %  A description of each parameter follows.
 270 %
 271 %    o image_info: the image info.
 272 %
 273 %    o image:  The image.
 274 %
 275 %    o exception: return any errors or warnings in this structure.
 276 %
 277 */
 278 static MagickBooleanType WriteARTImage(const ImageInfo *image_info,Image *image,
 279   ExceptionInfo *exception)
 280 {
 281   MagickBooleanType
 282     status;
 283
 284   QuantumInfo
 285     *quantum_info;
 286
 287   register const Quantum
 288     *p;
 289
 290   size_t
 291     length;
 292
 293   ssize_t
 294     count,
 295     y;
 296
 297   unsigned char
 298     *pixels;
 299
 300   /*
 301     Open output image file.
 302   */
 303   assert(image_info != (const ImageInfo *) NULL);
 304   assert(image_info->signature == MagickCoreSignature);
 305   assert(image != (Image *) NULL);
 306   assert(image->signature == MagickCoreSignature);
 307   if (image->debug != MagickFalse)
 308     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 309   assert(exception != (ExceptionInfo *) NULL);
 310   assert(exception->signature == MagickCoreSignature);
 311   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 312   if (status == MagickFalse)
 313     return(status);
 314   if ((image->columns > 65535UL) || (image->rows > 65535UL))
 315     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
 316   (void) TransformImageColorspace(image,sRGBColorspace,exception);
 317   (void) SetImageType(image,BilevelType,exception);
 318   image->endian=MSBEndian;
 319   image->depth=1;
 320   (void) WriteBlobLSBShort(image,0);
 321   (void) WriteBlobLSBShort(image,(unsigned short) image->columns);
 322   (void) WriteBlobLSBShort(image,0);
 323   (void) WriteBlobLSBShort(image,(unsigned short) image->rows);
 324   quantum_info=AcquireQuantumInfo(image_info,image);
 325   pixels=(unsigned char *) GetQuantumPixels(quantum_info);
 326   for (y=0; y < (ssize_t) image->rows; y++)
 327   {
 328     p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 329     if (p == (const Quantum *) NULL)
 330       break;
 331     length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
 332       GrayQuantum,pixels,exception);
 333     count=WriteBlob(image,length,pixels);
 334     if (count != (ssize_t) length)
 335       ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
 336     count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
 337     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 338       image->rows);
 339     if (status == MagickFalse)
 340       break;
 341   }
 342   quantum_info=DestroyQuantumInfo(quantum_info);
 343   (void) CloseBlob(image);
 344   return(status);
 345 }