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 1999-2015 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/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   register Quantum
 104     *q;
 105
 106   register ssize_t
 107     x;
 108
 109   register unsigned char
 110     *p;
 111
 112   size_t
 113     height,
 114     length,
 115     width;
 116
 117   ssize_t
 118     count,
 119     y;
 120
 121   unsigned char
 122     *pixels;
 123
 124   /*
 125     Open image file.
 126   */
 127   assert(image_info != (const ImageInfo *) NULL);
 128   assert(image_info->signature == MagickSignature);
 129   if (image_info->debug != MagickFalse)
 130     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 131       image_info->filename);
 132   assert(exception != (ExceptionInfo *) NULL);
 133   assert(exception->signature == MagickSignature);
 134   image=AcquireImage(image_info,exception);
 135   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 136   if (status == MagickFalse)
 137     {
 138       image=DestroyImageList(image);
 139       return((Image *) NULL);
 140     }
 141   /*
 142     Read AVS X image.
 143   */
 144   width=ReadBlobMSBLong(image);
 145   height=ReadBlobMSBLong(image);
 146   if (EOFBlob(image) != MagickFalse)
 147     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 148   if ((width == 0UL) || (height == 0UL))
 149     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 150   do
 151   {
 152     /*
 153       Convert AVS raster image to pixel packets.
 154     */
 155     image->columns=width;
 156     image->rows=height;
 157     image->depth=8;
 158     if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
 159       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 160         break;
 161     status=SetImageExtent(image,image->columns,image->rows,exception);
 162     if (status == MagickFalse)
 163       return(DestroyImageList(image));
 164     pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
 165       4*sizeof(*pixels));
 166     if (pixels == (unsigned char *) NULL)
 167       ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 168     length=(size_t) 4*image->columns;
 169     for (y=0; y < (ssize_t) image->rows; y++)
 170     {
 171       count=ReadBlob(image,length,pixels);
 172       if ((size_t) count != length)
 173         ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 174       p=pixels;
 175       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 176       if (q == (Quantum *) NULL)
 177         break;
 178       for (x=0; x < (ssize_t) image->columns; x++)
 179       {
 180         SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
 181         SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 182         SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 183         SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
 184         if (GetPixelAlpha(image,q) != OpaqueAlpha)
 185           image->alpha_trait=BlendPixelTrait;
 186         q+=GetPixelChannels(image);
 187       }
 188       if (SyncAuthenticPixels(image,exception) == MagickFalse)
 189         break;
 190       if (image->previous == (Image *) NULL)
 191         {
 192           status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 193             image->rows);
 194           if (status == MagickFalse)
 195             break;
 196         }
 197     }
 198     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 199     if (EOFBlob(image) != MagickFalse)
 200       {
 201         ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 202           image->filename);
 203         break;
 204       }
 205     /*
 206       Proceed to next image.
 207     */
 208     if (image_info->number_scenes != 0)
 209       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 210         break;
 211     width=ReadBlobMSBLong(image);
 212     height=ReadBlobMSBLong(image);
 213     if ((width != 0UL) && (height != 0UL))
 214       {
 215         /*
 216           Allocate next image structure.
 217         */
 218         AcquireNextImage(image_info,image,exception);
 219         if (GetNextImageInList(image) == (Image *) NULL)
 220           {
 221             image=DestroyImageList(image);
 222             return((Image *) NULL);
 223           }
 224         image=SyncNextImageInList(image);
 225         status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 226           GetBlobSize(image));
 227         if (status == MagickFalse)
 228           break;
 229       }
 230   } while ((width != 0UL) && (height != 0UL));
 231   (void) CloseBlob(image);
 232   return(GetFirstImageInList(image));
 233 }
 234 \f
 235 /*
 236 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 237 %                                                                             %
 238 %                                                                             %
 239 %                                                                             %
 240 %   R e g i s t e r A V S I m a g e                                           %
 241 %                                                                             %
 242 %                                                                             %
 243 %                                                                             %
 244 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 245 %
 246 %  RegisterAVSImage() adds attributes for the AVS X image format to the list
 247 %  of supported formats.  The attributes include the image format tag, a
 248 %  method to read and/or write the format, whether the format supports the
 249 %  saving of more than one frame to the same file or blob, whether the format
 250 %  supports native in-memory I/O, and a brief description of the format.
 251 %
 252 %  The format of the RegisterAVSImage method is:
 253 %
 254 %      size_t RegisterAVSImage(void)
 255 %
 256 */
 257 ModuleExport size_t RegisterAVSImage(void)
 258 {
 259   MagickInfo
 260     *entry;
 261
 262   entry=SetMagickInfo("AVS");
 263   entry->decoder=(DecodeImageHandler *) ReadAVSImage;
 264   entry->encoder=(EncodeImageHandler *) WriteAVSImage;
 265   entry->description=ConstantString("AVS X image");
 266   entry->module=ConstantString("AVS");
 267   (void) RegisterMagickInfo(entry);
 268   return(MagickImageCoderSignature);
 269 }
 270 \f
 271 /*
 272 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 273 %                                                                             %
 274 %                                                                             %
 275 %                                                                             %
 276 %   U n r e g i s t e r A V S I m a g e                                       %
 277 %                                                                             %
 278 %                                                                             %
 279 %                                                                             %
 280 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 281 %
 282 %  UnregisterAVSImage() removes format registrations made by the
 283 %  AVS module from the list of supported formats.
 284 %
 285 %  The format of the UnregisterAVSImage method is:
 286 %
 287 %      UnregisterAVSImage(void)
 288 %
 289 */
 290 ModuleExport void UnregisterAVSImage(void)
 291 {
 292   (void) UnregisterMagickInfo("AVS");
 293 }
 294 \f
 295 /*
 296 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 297 %                                                                             %
 298 %                                                                             %
 299 %                                                                             %
 300 %   W r i t e A V S I m a g e                                                 %
 301 %                                                                             %
 302 %                                                                             %
 303 %                                                                             %
 304 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 305 %
 306 %  WriteAVSImage() writes an image to a file in AVS X image format.
 307 %
 308 %  The format of the WriteAVSImage method is:
 309 %
 310 %      MagickBooleanType WriteAVSImage(const ImageInfo *image_info,
 311 %        Image *image,ExceptionInfo *exception)
 312 %
 313 %  A description of each parameter follows.
 314 %
 315 %    o image_info: the image info.
 316 %
 317 %    o image:  The image.
 318 %
 319 %    o exception: return any errors or warnings in this structure.
 320 %
 321 */
 322 static MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image,
 323   ExceptionInfo *exception)
 324 {
 325   MagickBooleanType
 326     status;
 327
 328   MagickOffsetType
 329     scene;
 330
 331   register const Quantum
 332     *restrict p;
 333
 334   register ssize_t
 335     x;
 336
 337   register unsigned char
 338     *restrict q;
 339
 340   ssize_t
 341     count,
 342     y;
 343
 344   unsigned char
 345     *pixels;
 346
 347   /*
 348     Open output image file.
 349   */
 350   assert(image_info != (const ImageInfo *) NULL);
 351   assert(image_info->signature == MagickSignature);
 352   assert(image != (Image *) NULL);
 353   assert(image->signature == MagickSignature);
 354   if (image->debug != MagickFalse)
 355     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 356   assert(exception != (ExceptionInfo *) NULL);
 357   assert(exception->signature == MagickSignature);
 358   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
 359   if (status == MagickFalse)
 360     return(status);
 361   scene=0;
 362   do
 363   {
 364     /*
 365       Write AVS header.
 366     */
 367     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 368     (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
 369     (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
 370     /*
 371       Allocate memory for pixels.
 372     */
 373     pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
 374       4*sizeof(*pixels));
 375     if (pixels == (unsigned char *) NULL)
 376       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 377     /*
 378       Convert MIFF to AVS raster pixels.
 379     */
 380     for (y=0; y < (ssize_t) image->rows; y++)
 381     {
 382       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 383       if (p == (const Quantum *) NULL)
 384         break;
 385       q=pixels;
 386       for (x=0; x < (ssize_t) image->columns; x++)
 387       {
 388         *q++=ScaleQuantumToChar((Quantum) (image->alpha_trait ==
 389           BlendPixelTrait ? GetPixelAlpha(image,p) : OpaqueAlpha));
 390         *q++=ScaleQuantumToChar(GetPixelRed(image,p));
 391         *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
 392         *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
 393         p+=GetPixelChannels(image);
 394       }
 395       count=WriteBlob(image,(size_t) (q-pixels),pixels);
 396       if (count != (ssize_t) (q-pixels))
 397         break;
 398       if (image->previous == (Image *) NULL)
 399         {
 400           status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 401             image->rows);
 402           if (status == MagickFalse)
 403             break;
 404         }
 405     }
 406     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
 407     if (GetNextImageInList(image) == (Image *) NULL)
 408       break;
 409     image=SyncNextImageInList(image);
 410     status=SetImageProgress(image,SaveImagesTag,scene++,
 411       GetImageListLength(image));
 412     if (status == MagickFalse)
 413       break;
 414   } while (image_info->adjoin != MagickFalse);
 415   (void) CloseBlob(image);
 416   return(MagickTrue);
 417 }