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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                             AAA   V   V  SSSSS                              %
   7 %                            A   A  V   V  SS                                 %
   8 %                            AAAAA  V   V   SSS                               %
   9 %                            A   A   V V      SS                              %
  10 %                            A   A    V    SSSSS                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                        Read/Write AVS 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-accessor.h"
  58 #include "MagickCore/quantum-private.h"
  59 #include "MagickCore/static.h"
  60 #include "MagickCore/string_.h"
  61 #include "MagickCore/module.h"
  62 \f
  63 /*
  64   Forward declarations.
  65 */
  66 static MagickBooleanType
  67   WriteAVSImage(const ImageInfo *,Image *,ExceptionInfo *);
  68 \f
  69 /*
  70 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  71 %                                                                             %
  72 %                                                                             %
  73 %                                                                             %
  74 %   R e a d A V S I m a g e                                                   %
  75 %                                                                             %
  76 %                                                                             %
  77 %                                                                             %
  78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  79 %
  80 %  ReadAVSImage() reads an AVS X image file and returns it.  It
  81 %  allocates the memory necessary for the new Image structure and returns a
  82 %  pointer to the new image.
  83 %
  84 %  The format of the ReadAVSImage method is:
  85 %
  86 %      Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
  87 %
  88 %  A description of each parameter follows:
  89 %
  90 %    o image_info: the image info.
  91 %
  92 %    o exception: return any errors or warnings in this structure.
  93 %
  94 */
  95 static Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
  96 {
  97   Image
  98     *image;
  99
 100   MagickBooleanType
 101     status;
 102
 103   MemoryInfo
 104     *pixel_info;
 105
 106   register Quantum
 107     *q;
 108
 109   register ssize_t
 110     x;
 111
 112   register unsigned char
 113     *p;
 114
 115   size_t
 116     height,
 117     length,
 118     width;
 119
 120   ssize_t
 121     count,
 122     y;
 123
 124   unsigned char
 125     *pixels;
 126
 127   /*
 128     Open image file.
 129   */
 130   assert(image_info != (const ImageInfo *) NULL);
 131   assert(image_info->signature == MagickCoreSignature);
 132   if (image_info->debug != MagickFalse)
 133     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 134       image_info->filename);
 135   assert(exception != (ExceptionInfo *) NULL);
 136   assert(exception->signature == MagickCoreSignature);
 137   image=AcquireImage(image_info,exception);
 138   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 139   if (status == MagickFalse)
 140     {
 141       image=DestroyImageList(image);
 142       return((Image *) NULL);
 143     }
 144   /*
 145     Read AVS X image.
 146   */
 147   width=ReadBlobMSBLong(image);
 148   height=ReadBlobMSBLong(image);
 149   if (EOFBlob(image) != MagickFalse)
 150     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 151   if ((width == 0UL) || (height == 0UL))
 152     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 153   do
 154   {
 155     /*
 156       Convert AVS raster image to pixel packets.
 157     */
 158     image->columns=width;
 159     image->rows=height;
 160     image->depth=8;
 161     if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
 162       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 163         break;
 164     status=SetImageExtent(image,image->columns,image->rows,exception);
 165     if (status == MagickFalse)
 166       return(DestroyImageList(image));
 167     pixel_info=AcquireVirtualMemory(image->columns,4*sizeof(*pixels));
 168     if (pixel_info == (MemoryInfo *) NULL)
 169       ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 170     pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
 171     length=(size_t) 4*image->columns;
 172     for (y=0; y < (ssize_t) image->rows; y++)
 173     {
 174       count=ReadBlob(image,length,pixels);
 175       if ((size_t) count != length)
 176         {
 177           pixel_info=RelinquishVirtualMemory(pixel_info);
 178           ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 179         }
 180       p=pixels;
 181       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 182       if (q == (Quantum *) NULL)
 183         break;
 184       for (x=0; x < (ssize_t) image->columns; x++)
 185       {
 186         SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
 187         SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 188         SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 189         SetPixelBlue(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     pixel_info=RelinquishVirtualMemory(pixel_info);
 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=ReadBlobMSBLong(image);
 218     height=ReadBlobMSBLong(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 V S I m a g e                                           %
 247 %                                                                             %
 248 %                                                                             %
 249 %                                                                             %
 250 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 251 %
 252 %  RegisterAVSImage() adds attributes for the AVS X 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 RegisterAVSImage method is:
 259 %
 260 %      size_t RegisterAVSImage(void)
 261 %
 262 */
 263 ModuleExport size_t RegisterAVSImage(void)
 264 {
 265   MagickInfo
 266     *entry;
 267
 268   entry=AcquireMagickInfo("AVS","AVS","AVS X image");
 269   entry->decoder=(DecodeImageHandler *) ReadAVSImage;
 270   entry->encoder=(EncodeImageHandler *) WriteAVSImage;
 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 V S I m a g e                                       %
 281 %                                                                             %
 282 %                                                                             %
 283 %                                                                             %
 284 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 285 %
 286 %  UnregisterAVSImage() removes format registrations made by the
 287 %  AVS module from the list of supported formats.
 288 %
 289 %  The format of the UnregisterAVSImage method is:
 290 %
 291 %      UnregisterAVSImage(void)
 292 %
 293 */
 294 ModuleExport void UnregisterAVSImage(void)
 295 {
 296   (void) UnregisterMagickInfo("AVS");
 297 }
 298 \f
 299 /*
 300 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 301 %                                                                             %
 302 %                                                                             %
 303 %                                                                             %
 304 %   W r i t e A V S I m a g e                                                 %
 305 %                                                                             %
 306 %                                                                             %
 307 %                                                                             %
 308 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 309 %
 310 %  WriteAVSImage() writes an image to a file in AVS X image format.
 311 %
 312 %  The format of the WriteAVSImage method is:
 313 %
 314 %      MagickBooleanType WriteAVSImage(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 WriteAVSImage(const ImageInfo *image_info,Image *image,
 327   ExceptionInfo *exception)
 328 {
 329   MagickBooleanType
 330     status;
 331
 332   MagickOffsetType
 333     scene;
 334
 335   MemoryInfo
 336     *pixel_info;
 337
 338   register const Quantum
 339     *magick_restrict p;
 340
 341   register ssize_t
 342     x;
 343
 344   register unsigned char
 345     *magick_restrict q;
 346
 347   ssize_t
 348     count,
 349     y;
 350
 351   unsigned char
 352     *pixels;
 353
 354   /*
 355     Open output image file.
 356   */
 357   assert(image_info != (const ImageInfo *) NULL);
 358   assert(image_info->signature == MagickCoreSignature);
 359   assert(image != (Image *) NULL);
 360   assert(image->signature == MagickCoreSignature);
 361   if (image->debug != MagickFalse)
 362     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 363   assert(exception != (ExceptionInfo *) NULL);
 364   assert(exception->signature == MagickCoreSignature);
 365   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 366   if (status == MagickFalse)
 367     return(status);
 368   scene=0;
 369   do
 370   {
 371     /*
 372       Write AVS header.
 373     */
 374     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 375     (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
 376     (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
 377     /*
 378       Allocate memory for pixels.
 379     */
 380     pixel_info=AcquireVirtualMemory(image->columns,4*sizeof(*pixels));
 381     if (pixel_info == (MemoryInfo *) NULL)
 382       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 383     pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
 384     /*
 385       Convert MIFF to AVS raster pixels.
 386     */
 387     for (y=0; y < (ssize_t) image->rows; y++)
 388     {
 389       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 390       if (p == (const Quantum *) NULL)
 391         break;
 392       q=pixels;
 393       for (x=0; x < (ssize_t) image->columns; x++)
 394       {
 395         *q++=ScaleQuantumToChar((Quantum) (image->alpha_trait ==
 396           BlendPixelTrait ? GetPixelAlpha(image,p) : OpaqueAlpha));
 397         *q++=ScaleQuantumToChar(GetPixelRed(image,p));
 398         *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
 399         *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
 400         p+=GetPixelChannels(image);
 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     pixel_info=RelinquishVirtualMemory(pixel_info);
 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 }