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 %    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   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         ThrowReaderException(CorruptImageError,"UnableToReadImageData");
 177       p=pixels;
 178       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 179       if (q == (Quantum *) NULL)
 180         break;
 181       for (x=0; x < (ssize_t) image->columns; x++)
 182       {
 183         SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
 184         SetPixelRed(image,ScaleCharToQuantum(*p++),q);
 185         SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
 186         SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
 187         if (GetPixelAlpha(image,q) != OpaqueAlpha)
 188           image->alpha_trait=BlendPixelTrait;
 189         q+=GetPixelChannels(image);
 190       }
 191       if (SyncAuthenticPixels(image,exception) == MagickFalse)
 192         break;
 193       if (image->previous == (Image *) NULL)
 194         {
 195           status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
 196             image->rows);
 197           if (status == MagickFalse)
 198             break;
 199         }
 200     }
 201     pixel_info=RelinquishVirtualMemory(pixel_info);
 202     if (EOFBlob(image) != MagickFalse)
 203       {
 204         ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 205           image->filename);
 206         break;
 207       }
 208     /*
 209       Proceed to next image.
 210     */
 211     if (image_info->number_scenes != 0)
 212       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 213         break;
 214     width=ReadBlobMSBLong(image);
 215     height=ReadBlobMSBLong(image);
 216     if ((width != 0UL) && (height != 0UL))
 217       {
 218         /*
 219           Allocate next image structure.
 220         */
 221         AcquireNextImage(image_info,image,exception);
 222         if (GetNextImageInList(image) == (Image *) NULL)
 223           {
 224             image=DestroyImageList(image);
 225             return((Image *) NULL);
 226           }
 227         image=SyncNextImageInList(image);
 228         status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 229           GetBlobSize(image));
 230         if (status == MagickFalse)
 231           break;
 232       }
 233   } while ((width != 0UL) && (height != 0UL));
 234   (void) CloseBlob(image);
 235   return(GetFirstImageInList(image));
 236 }
 237 \f
 238 /*
 239 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 240 %                                                                             %
 241 %                                                                             %
 242 %                                                                             %
 243 %   R e g i s t e r A V S I m a g e                                           %
 244 %                                                                             %
 245 %                                                                             %
 246 %                                                                             %
 247 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 248 %
 249 %  RegisterAVSImage() adds attributes for the AVS X image format to the list
 250 %  of supported formats.  The attributes include the image format tag, a
 251 %  method to read and/or write the format, whether the format supports the
 252 %  saving of more than one frame to the same file or blob, whether the format
 253 %  supports native in-memory I/O, and a brief description of the format.
 254 %
 255 %  The format of the RegisterAVSImage method is:
 256 %
 257 %      size_t RegisterAVSImage(void)
 258 %
 259 */
 260 ModuleExport size_t RegisterAVSImage(void)
 261 {
 262   MagickInfo
 263     *entry;
 264
 265   entry=AcquireMagickInfo("AVS","AVS","AVS X image");
 266   entry->decoder=(DecodeImageHandler *) ReadAVSImage;
 267   entry->encoder=(EncodeImageHandler *) WriteAVSImage;
 268   (void) RegisterMagickInfo(entry);
 269   return(MagickImageCoderSignature);
 270 }
 271 \f
 272 /*
 273 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 274 %                                                                             %
 275 %                                                                             %
 276 %                                                                             %
 277 %   U n r e g i s t e r A V S I m a g e                                       %
 278 %                                                                             %
 279 %                                                                             %
 280 %                                                                             %
 281 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 282 %
 283 %  UnregisterAVSImage() removes format registrations made by the
 284 %  AVS module from the list of supported formats.
 285 %
 286 %  The format of the UnregisterAVSImage method is:
 287 %
 288 %      UnregisterAVSImage(void)
 289 %
 290 */
 291 ModuleExport void UnregisterAVSImage(void)
 292 {
 293   (void) UnregisterMagickInfo("AVS");
 294 }
 295 \f
 296 /*
 297 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 298 %                                                                             %
 299 %                                                                             %
 300 %                                                                             %
 301 %   W r i t e A V S I m a g e                                                 %
 302 %                                                                             %
 303 %                                                                             %
 304 %                                                                             %
 305 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 306 %
 307 %  WriteAVSImage() writes an image to a file in AVS X image format.
 308 %
 309 %  The format of the WriteAVSImage method is:
 310 %
 311 %      MagickBooleanType WriteAVSImage(const ImageInfo *image_info,
 312 %        Image *image,ExceptionInfo *exception)
 313 %
 314 %  A description of each parameter follows.
 315 %
 316 %    o image_info: the image info.
 317 %
 318 %    o image:  The image.
 319 %
 320 %    o exception: return any errors or warnings in this structure.
 321 %
 322 */
 323 static MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image,
 324   ExceptionInfo *exception)
 325 {
 326   MagickBooleanType
 327     status;
 328
 329   MagickOffsetType
 330     scene;
 331
 332   MemoryInfo
 333     *pixel_info;
 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 AVS header.
 370     */
 371     (void) TransformImageColorspace(image,sRGBColorspace,exception);
 372     (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
 373     (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
 374     /*
 375       Allocate memory for pixels.
 376     */
 377     pixel_info=AcquireVirtualMemory(image->columns,4*sizeof(*pixels));
 378     if (pixel_info == (MemoryInfo *) NULL)
 379       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 380     pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
 381     /*
 382       Convert MIFF to AVS 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((Quantum) (image->alpha_trait ==
 393           BlendPixelTrait ? GetPixelAlpha(image,p) : OpaqueAlpha));
 394         *q++=ScaleQuantumToChar(GetPixelRed(image,p));
 395         *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
 396         *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
 397         p+=GetPixelChannels(image);
 398       }
 399       count=WriteBlob(image,(size_t) (q-pixels),pixels);
 400       if (count != (ssize_t) (q-pixels))
 401         break;
 402       if (image->previous == (Image *) NULL)
 403         {
 404           status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 405             image->rows);
 406           if (status == MagickFalse)
 407             break;
 408         }
 409     }
 410     pixel_info=RelinquishVirtualMemory(pixel_info);
 411     if (GetNextImageInList(image) == (Image *) NULL)
 412       break;
 413     image=SyncNextImageInList(image);
 414     status=SetImageProgress(image,SaveImagesTag,scene++,
 415       GetImageListLength(image));
 416     if (status == MagickFalse)
 417       break;
 418   } while (image_info->adjoin != MagickFalse);
 419   (void) CloseBlob(image);
 420   return(MagickTrue);
 421 }