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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                             AAA    AAA   IIIII                              %
   7 %                            A   A  A   A    I                                %
   8 %                            AAAAA  AAAAA    I                                %
   9 %                            A   A  A   A    I                                %
  10 %                            A   A  A   A  IIIII                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                        Read/Write AAI X Image Format                        %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                   Cristy                                    %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2017 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/blob.h"
  44 #include "MagickCore/blob-private.h"
  45 #include "MagickCore/cache.h"
  46 #include "MagickCore/colorspace.h"
  47 #include "MagickCore/colorspace-private.h"
  48 #include "MagickCore/exception.h"
  49 #include "MagickCore/exception-private.h"
  50 #include "MagickCore/image.h"
  51 #include "MagickCore/image-private.h"
  52 #include "MagickCore/list.h"
  53 #include "MagickCore/magick.h"
  54 #include "MagickCore/memory_.h"
  55 #include "MagickCore/monitor.h"
  56 #include "MagickCore/monitor-private.h"
  57 #include "MagickCore/pixel.h"
  58 #include "MagickCore/pixel-accessor.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   WriteAAIImage(const ImageInfo *,Image *,ExceptionInfo *);
  69 \f
  70 /*
  71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  72 %                                                                             %
  73 %                                                                             %
  74 %                                                                             %
  75 %   R e a d A A I I m a g e                                                   %
  76 %                                                                             %
  77 %                                                                             %
  78 %                                                                             %
  79 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  80 %
  81 %  ReadAAIImage() reads an AAI Dune image file and returns it.  It
  82 %  allocates the memory necessary for the new Image structure and returns a
  83 %  pointer to the new image.
  84 %
  85 %  The format of the ReadAAIImage method is:
  86 %
  87 %      Image *ReadAAIImage(const ImageInfo *image_info,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 *ReadAAIImage(const ImageInfo *image_info,ExceptionInfo *exception)
  97 {
  98   Image
  99     *image;
 100
 101   MagickBooleanType
 102     status;
 103
 104   register ssize_t
 105     x;
 106
 107   register Quantum
 108     *q;
 109
 110   register unsigned char
 111     *p;
 112
 113   size_t
 114     height,
 115     length,
 116     width;
 117
 118   ssize_t
 119     count,
 120     y;
 121
 122   unsigned char
 123     *pixels;
 124
 125   /*
 126     Open image file.
 127   */
 128   assert(image_info != (const ImageInfo *) NULL);
 129   assert(image_info->signature == MagickCoreSignature);
 130   if (image_info->debug != MagickFalse)
 131     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 132       image_info->filename);
 133   assert(exception != (ExceptionInfo *) NULL);
 134   assert(exception->signature == MagickCoreSignature);
 135   image=AcquireImage(image_info,exception);
 136   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 137   if (status == MagickFalse)
 138     {
 139       image=DestroyImageList(image);
 140       return((Image *) NULL);
 141     }
 142   /*
 143     Read AAI Dune image.
 144   */
 145   width=ReadBlobLSBLong(image);
 146   height=ReadBlobLSBLong(image);
 147   if (EOFBlob(image) != MagickFalse)
 148     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 149   if ((width == 0UL) || (height == 0UL))
 150     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 151   do
 152   {
 153     /*
 154       Convert AAI raster image to pixel packets.
 155     */
 156     image->columns=width;
 157     image->rows=height;
 158     image->depth=8;
 159     if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
 160       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 161         break;
 162     status=SetImageExtent(image,image->columns,image->rows,exception);
 163     if (status == MagickFalse)
 164       return(DestroyImageList(image));
 165     pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
 166       4*sizeof(*pixels));
 167     if (pixels == (unsigned char *) NULL)
 168       ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 169     length=(size_t) 4*image->columns;
 170     for (y=0; y < (ssize_t) image->rows; y++)
 171     {
 172       count=ReadBlob(image,length,pixels);
 173       if (count != (ssize_t) length)
 174         {
 175           pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 176           ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 177         }
 178       p=pixels;
 179       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 180       if (q == (Quantum *) NULL)
 181         break;
 182       for (x=0; x < (ssize_t) image->columns; x++)
 183       {
 184         SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
 185         SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 186         SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 187         if (*p == 254)
 188           *p=255;
 189         SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
 190         if (GetPixelAlpha(image,q) != OpaqueAlpha)
 191           image->alpha_trait=BlendPixelTrait;
 192         q+=GetPixelChannels(image);
 193       }
 194       if (SyncAuthenticPixels(image,exception) == MagickFalse)
 195         break;
 196       if (image->previous == (Image *) NULL)
 197         {
 198           status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 199             image->rows);
 200           if (status == MagickFalse)
 201             break;
 202         }
 203     }
 204     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 205     if (EOFBlob(image) != MagickFalse)
 206       {
 207         ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 208           image->filename);
 209         break;
 210       }
 211     /*
 212       Proceed to next image.
 213     */
 214     if (image_info->number_scenes != 0)
 215       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 216         break;
 217     width=ReadBlobLSBLong(image);
 218     height=ReadBlobLSBLong(image);
 219     if ((width != 0UL) && (height != 0UL))
 220       {
 221         /*
 222           Allocate next image structure.
 223         */
 224         AcquireNextImage(image_info,image,exception);
 225         if (GetNextImageInList(image) == (Image *) NULL)
 226           {
 227             image=DestroyImageList(image);
 228             return((Image *) NULL);
 229           }
 230         image=SyncNextImageInList(image);
 231         status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 232           GetBlobSize(image));
 233         if (status == MagickFalse)
 234           break;
 235       }
 236   } while ((width != 0UL) && (height != 0UL));
 237   (void) CloseBlob(image);
 238   return(GetFirstImageInList(image));
 239 }
 240 \f
 241 /*
 242 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 243 %                                                                             %
 244 %                                                                             %
 245 %                                                                             %
 246 %   R e g i s t e r A A I I m a g e                                           %
 247 %                                                                             %
 248 %                                                                             %
 249 %                                                                             %
 250 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 251 %
 252 %  RegisterAAIImage() adds attributes for the AAI Dune image format to the list
 253 %  of supported formats.  The attributes include the image format tag, a
 254 %  method to read and/or write the format, whether the format supports the
 255 %  saving of more than one frame to the same file or blob, whether the format
 256 %  supports native in-memory I/O, and a brief description of the format.
 257 %
 258 %  The format of the RegisterAAIImage method is:
 259 %
 260 %      size_t RegisterAAIImage(void)
 261 %
 262 */
 263 ModuleExport size_t RegisterAAIImage(void)
 264 {
 265   MagickInfo
 266     *entry;
 267
 268   entry=AcquireMagickInfo("AAI","AAI","AAI Dune image");
 269   entry->decoder=(DecodeImageHandler *) ReadAAIImage;
 270   entry->encoder=(EncodeImageHandler *) WriteAAIImage;
 271   (void) RegisterMagickInfo(entry);
 272   return(MagickImageCoderSignature);
 273 }
 274 \f
 275 /*
 276 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 277 %                                                                             %
 278 %                                                                             %
 279 %                                                                             %
 280 %   U n r e g i s t e r A A I I m a g e                                       %
 281 %                                                                             %
 282 %                                                                             %
 283 %                                                                             %
 284 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 285 %
 286 %  UnregisterAAIImage() removes format registrations made by the
 287 %  AAI module from the list of supported formats.
 288 %
 289 %  The format of the UnregisterAAIImage method is:
 290 %
 291 %      UnregisterAAIImage(void)
 292 %
 293 */
 294 ModuleExport void UnregisterAAIImage(void)
 295 {
 296   (void) UnregisterMagickInfo("AAI");
 297 }
 298 \f
 299 /*
 300 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 301 %                                                                             %
 302 %                                                                             %
 303 %                                                                             %
 304 %   W r i t e A A I I m a g e                                                 %
 305 %                                                                             %
 306 %                                                                             %
 307 %                                                                             %
 308 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 309 %
 310 %  WriteAAIImage() writes an image to a file in AAI Dune image format.
 311 %
 312 %  The format of the WriteAAIImage method is:
 313 %
 314 %      MagickBooleanType WriteAAIImage(const ImageInfo *image_info,
 315 %        Image *image,ExceptionInfo *exception)
 316 %
 317 %  A description of each parameter follows.
 318 %
 319 %    o image_info: the image info.
 320 %
 321 %    o image:  The image.
 322 %
 323 %    o exception: return any errors or warnings in this structure.
 324 %
 325 */
 326 static MagickBooleanType WriteAAIImage(const ImageInfo *image_info,Image *image,
 327   ExceptionInfo *exception)
 328 {
 329   MagickBooleanType
 330     status;
 331
 332   MagickOffsetType
 333     scene;
 334
 335   register const Quantum
 336     *magick_restrict p;
 337
 338   register ssize_t
 339     x;
 340
 341   register unsigned char
 342     *magick_restrict q;
 343
 344   ssize_t
 345     count,
 346     y;
 347
 348   unsigned char
 349     *pixels;
 350
 351   /*
 352     Open output image file.
 353   */
 354   assert(image_info != (const ImageInfo *) NULL);
 355   assert(image_info->signature == MagickCoreSignature);
 356   assert(image != (Image *) NULL);
 357   assert(image->signature == MagickCoreSignature);
 358   if (image->debug != MagickFalse)
 359     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 360   assert(exception != (ExceptionInfo *) NULL);
 361   assert(exception->signature == MagickCoreSignature);
 362   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 363   if (status == MagickFalse)
 364     return(status);
 365   scene=0;
 366   do
 367   {
 368     /*
 369       Write AAI header.
 370     */
 371     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 372     (void) WriteBlobLSBLong(image,(unsigned int) image->columns);
 373     (void) WriteBlobLSBLong(image,(unsigned int) image->rows);
 374     /*
 375       Allocate memory for pixels.
 376     */
 377     pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
 378       4*sizeof(*pixels));
 379     if (pixels == (unsigned char *) NULL)
 380       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 381     /*
 382       Convert MIFF to AAI raster pixels.
 383     */
 384     for (y=0; y < (ssize_t) image->rows; y++)
 385     {
 386       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 387       if (p == (const Quantum *) NULL)
 388         break;
 389       q=pixels;
 390       for (x=0; x < (ssize_t) image->columns; x++)
 391       {
 392         *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
 393         *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
 394         *q++=ScaleQuantumToChar(GetPixelRed(image,p));
 395         *q=ScaleQuantumToChar((Quantum) (image->alpha_trait !=
 396           UndefinedPixelTrait ? GetPixelAlpha(image,p) : OpaqueAlpha));
 397         if (*q == 255)
 398           *q=254;
 399         p+=GetPixelChannels(image);
 400         q++;
 401       }
 402       count=WriteBlob(image,(size_t) (q-pixels),pixels);
 403       if (count != (ssize_t) (q-pixels))
 404         break;
 405       if (image->previous == (Image *) NULL)
 406         {
 407           status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 408             image->rows);
 409           if (status == MagickFalse)
 410             break;
 411         }
 412     }
 413     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 414     if (GetNextImageInList(image) == (Image *) NULL)
 415       break;
 416     image=SyncNextImageInList(image);
 417     status=SetImageProgress(image,SaveImagesTag,scene++,
 418       GetImageListLength(image));
 419     if (status == MagickFalse)
 420       break;
 421   } while (image_info->adjoin != MagickFalse);
 422   (void) CloseBlob(image);
 423   return(MagickTrue);
 424 }