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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                            RRRR    AAA   W   W                              %
   7 %                            R   R  A   A  W   W                              %
   8 %                            RRRR   AAAAA  W W W                              %
   9 %                            R R    A   A  WW WW                              %
  10 %                            R  R   A   A  W   W                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                       Read/Write RAW Image Format                           %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2009 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 "magick/studio.h"
  43 #include "magick/blob.h"
  44 #include "magick/blob-private.h"
  45 #include "magick/cache.h"
  46 #include "magick/colorspace.h"
  47 #include "magick/constitute.h"
  48 #include "magick/exception.h"
  49 #include "magick/exception-private.h"
  50 #include "magick/image.h"
  51 #include "magick/image-private.h"
  52 #include "magick/list.h"
  53 #include "magick/magick.h"
  54 #include "magick/memory_.h"
  55 #include "magick/monitor.h"
  56 #include "magick/monitor-private.h"
  57 #include "magick/quantum-private.h"
  58 #include "magick/quantum-private.h"
  59 #include "magick/static.h"
  60 #include "magick/statistic.h"
  61 #include "magick/string_.h"
  62 #include "magick/module.h"
  63 \f
  64 /*
  65   Forward declarations.
  66 */
  67 static MagickBooleanType
  68   WriteRAWImage(const ImageInfo *,Image *);
  69 \f
  70 /*
  71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  72 %                                                                             %
  73 %                                                                             %
  74 %                                                                             %
  75 %   R e a d R A W I m a g e                                                   %
  76 %                                                                             %
  77 %                                                                             %
  78 %                                                                             %
  79 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  80 %
  81 %  ReadRAWImage() reads an image of raw samples and returns it.  It allocates
  82 %  the memory necessary for the new Image structure and returns a pointer to
  83 %  the new image.
  84 %
  85 %  The format of the ReadRAWImage method is:
  86 %
  87 %      Image *ReadRAWImage(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 *ReadRAWImage(const ImageInfo *image_info,
  97   ExceptionInfo *exception)
  98 {
  99   Image
 100     *canvas_image,
 101     *image;
 102
 103   long
 104     y;
 105
 106   MagickBooleanType
 107     status;
 108
 109   MagickOffsetType
 110     scene;
 111
 112   QuantumInfo
 113     *quantum_info;
 114
 115   QuantumType
 116     quantum_type;
 117
 118   register long
 119     i;
 120
 121   ssize_t
 122     count;
 123
 124   size_t
 125     length;
 126
 127   unsigned char
 128     *pixels;
 129
 130   /*
 131     Open image file.
 132   */
 133   assert(image_info != (const ImageInfo *) NULL);
 134   assert(image_info->signature == MagickSignature);
 135   if (image_info->debug != MagickFalse)
 136     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 137       image_info->filename);
 138   assert(exception != (ExceptionInfo *) NULL);
 139   assert(exception->signature == MagickSignature);
 140   image=AcquireImage(image_info);
 141   if ((image->columns == 0) || (image->rows == 0))
 142     ThrowReaderException(OptionError,"MustSpecifyImageSize");
 143   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 144   if (status == MagickFalse)
 145     {
 146       image=DestroyImageList(image);
 147       return((Image *) NULL);
 148     }
 149   for (i=0; i < image->offset; i++)
 150     if (ReadBlobByte(image) == EOF)
 151       {
 152         ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 153           image->filename);
 154         break;
 155       }
 156   /*
 157     Create virtual canvas to support cropping (i.e. image.gray[100x100+10+20]).
 158   */
 159   canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse,
 160     exception);
 161   (void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod);
 162   quantum_type=GrayQuantum;
 163   quantum_info=AcquireQuantumInfo(image_info,canvas_image);
 164   if (quantum_info == (QuantumInfo *) NULL)
 165     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 166   pixels=GetQuantumPixels(quantum_info);
 167   if (image_info->number_scenes != 0)
 168     while (image->scene < image_info->scene)
 169     {
 170       /*
 171         Skip to next image.
 172       */
 173       image->scene++;
 174       length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
 175       for (y=0; y < (long) image->rows; y++)
 176       {
 177         count=ReadBlob(image,length,pixels);
 178         if (count != (ssize_t) length)
 179           break;
 180       }
 181     }
 182   scene=0;
 183   count=0;
 184   length=0;
 185   do
 186   {
 187     /*
 188       Read pixels to virtual canvas image then push to image.
 189     */
 190     if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
 191       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 192         break;
 193     if (scene == 0)
 194       {
 195         length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
 196         count=ReadBlob(image,length,pixels);
 197       }
 198     for (y=0; y < (long) image->extract_info.height; y++)
 199     {
 200       register const PixelPacket
 201         *restrict p;
 202
 203       register long
 204         x;
 205
 206       register PixelPacket
 207         *restrict q;
 208
 209       if (count != (ssize_t) length)
 210         {
 211           ThrowFileException(exception,CorruptImageError,
 212             "UnexpectedEndOfFile",image->filename);
 213           break;
 214         }
 215       q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,exception);
 216       if (q == (PixelPacket *) NULL)
 217         break;
 218       length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,quantum_info,
 219         quantum_type,pixels,exception);
 220       if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
 221         break;
 222       if (((y-image->extract_info.y) >= 0) &&
 223           ((y-image->extract_info.y) < (long) image->rows))
 224         {
 225           p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
 226             image->columns,1,exception);
 227           q=QueueAuthenticPixels(image,0,y-image->extract_info.y,image->columns,
 228             1,exception);
 229           if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
 230             break;
 231           for (x=0; x < (long) image->columns; x++)
 232           {
 233             q->red=p->red;
 234             q->green=p->green;
 235             q->blue=p->blue;
 236             p++;
 237             q++;
 238           }
 239           if (SyncAuthenticPixels(image,exception) == MagickFalse)
 240             break;
 241         }
 242       if (image->previous == (Image *) NULL)
 243         {
 244           status=SetImageProgress(image,LoadImageTag,y,image->rows);
 245           if (status == MagickFalse)
 246             break;
 247         }
 248       count=ReadBlob(image,length,pixels);
 249     }
 250     SetQuantumImageType(image,quantum_type);
 251     /*
 252       Proceed to next image.
 253     */
 254     if (image_info->number_scenes != 0)
 255       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
 256         break;
 257     if (count == (ssize_t) length)
 258       {
 259         /*
 260           Allocate next image structure.
 261         */
 262         AcquireNextImage(image_info,image);
 263         if (GetNextImageInList(image) == (Image *) NULL)
 264           {
 265             image=DestroyImageList(image);
 266             return((Image *) NULL);
 267           }
 268         image=SyncNextImageInList(image);
 269         status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 270           GetBlobSize(image));
 271         if (status == MagickFalse)
 272           break;
 273       }
 274     scene++;
 275   } while (count == (ssize_t) length);
 276   quantum_info=DestroyQuantumInfo(quantum_info);
 277   InheritException(&image->exception,&canvas_image->exception);
 278   canvas_image=DestroyImage(canvas_image);
 279   (void) CloseBlob(image);
 280   return(GetFirstImageInList(image));
 281 }
 282 \f
 283 /*
 284 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 285 %                                                                             %
 286 %                                                                             %
 287 %                                                                             %
 288 %   R e g i s t e r R A W I m a g e                                           %
 289 %                                                                             %
 290 %                                                                             %
 291 %                                                                             %
 292 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 293 %
 294 %  RegisterRAWImage() adds attributes for the RAW image format to the list of
 295 %  supported formats.  The attributes include the image format tag, a method to
 296 %  read and/or write the format, whether the format supports the saving of
 297 %  more than one frame to the same file or blob, whether the format supports
 298 %  native in-memory I/O, and a brief description of the format.
 299 %
 300 %  The format of the RegisterRAWImage method is:
 301 %
 302 %      unsigned long RegisterRAWImage(void)
 303 %
 304 */
 305 ModuleExport unsigned long RegisterRAWImage(void)
 306 {
 307   MagickInfo
 308     *entry;
 309
 310   entry=SetMagickInfo("R");
 311   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 312   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 313   entry->raw=MagickTrue;
 314   entry->endian_support=MagickTrue;
 315   entry->format_type=ExplicitFormatType;
 316   entry->description=ConstantString("Raw red samples");
 317   entry->module=ConstantString("RAW");
 318   (void) RegisterMagickInfo(entry);
 319   entry=SetMagickInfo("C");
 320   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 321   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 322   entry->raw=MagickTrue;
 323   entry->endian_support=MagickTrue;
 324   entry->format_type=ExplicitFormatType;
 325   entry->description=ConstantString("Raw cyan samples");
 326   entry->module=ConstantString("RAW");
 327   (void) RegisterMagickInfo(entry);
 328   entry=SetMagickInfo("G");
 329   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 330   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 331   entry->raw=MagickTrue;
 332   entry->endian_support=MagickTrue;
 333   entry->format_type=ExplicitFormatType;
 334   entry->description=ConstantString("Raw green samples");
 335   entry->module=ConstantString("RAW");
 336   (void) RegisterMagickInfo(entry);
 337   entry=SetMagickInfo("M");
 338   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 339   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 340   entry->raw=MagickTrue;
 341   entry->endian_support=MagickTrue;
 342   entry->format_type=ExplicitFormatType;
 343   entry->description=ConstantString("Raw magenta samples");
 344   entry->module=ConstantString("RAW");
 345   (void) RegisterMagickInfo(entry);
 346   entry=SetMagickInfo("B");
 347   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 348   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 349   entry->raw=MagickTrue;
 350   entry->endian_support=MagickTrue;
 351   entry->description=ConstantString("Raw blue samples");
 352   entry->format_type=ExplicitFormatType;
 353   entry->module=ConstantString("RAW");
 354   (void) RegisterMagickInfo(entry);
 355   entry=SetMagickInfo("Y");
 356   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 357   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 358   entry->raw=MagickTrue;
 359   entry->endian_support=MagickTrue;
 360   entry->format_type=ExplicitFormatType;
 361   entry->description=ConstantString("Raw yellow samples");
 362   entry->module=ConstantString("RAW");
 363   (void) RegisterMagickInfo(entry);
 364   entry=SetMagickInfo("A");
 365   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 366   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 367   entry->raw=MagickTrue;
 368   entry->endian_support=MagickTrue;
 369   entry->description=ConstantString("Raw alpha samples");
 370   entry->module=ConstantString("RAW");
 371   (void) RegisterMagickInfo(entry);
 372   entry=SetMagickInfo("O");
 373   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 374   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 375   entry->raw=MagickTrue;
 376   entry->endian_support=MagickTrue;
 377   entry->format_type=ExplicitFormatType;
 378   entry->description=ConstantString("Raw opacity samples");
 379   entry->module=ConstantString("RAW");
 380   (void) RegisterMagickInfo(entry);
 381   entry=SetMagickInfo("K");
 382   entry->decoder=(DecodeImageHandler *) ReadRAWImage;
 383   entry->encoder=(EncodeImageHandler *) WriteRAWImage;
 384   entry->raw=MagickTrue;
 385   entry->endian_support=MagickTrue;
 386   entry->format_type=ExplicitFormatType;
 387   entry->description=ConstantString("Raw black samples");
 388   entry->module=ConstantString("RAW");
 389   (void) RegisterMagickInfo(entry);
 390   return(MagickImageCoderSignature);
 391 }
 392 \f
 393 /*
 394 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 395 %                                                                             %
 396 %                                                                             %
 397 %                                                                             %
 398 %   U n r e g i s t e r R A W I m a g e                                       %
 399 %                                                                             %
 400 %                                                                             %
 401 %                                                                             %
 402 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 403 %
 404 %  UnregisterRAWImage() removes format registrations made by the RAW module
 405 %  from the list of supported formats.
 406 %
 407 %  The format of the UnregisterRAWImage method is:
 408 %
 409 %      UnregisterRAWImage(void)
 410 %
 411 */
 412 ModuleExport void UnregisterRAWImage(void)
 413 {
 414   (void) UnregisterMagickInfo("R");
 415   (void) UnregisterMagickInfo("C");
 416   (void) UnregisterMagickInfo("G");
 417   (void) UnregisterMagickInfo("M");
 418   (void) UnregisterMagickInfo("B");
 419   (void) UnregisterMagickInfo("Y");
 420   (void) UnregisterMagickInfo("A");
 421   (void) UnregisterMagickInfo("O");
 422   (void) UnregisterMagickInfo("K");
 423 }
 424 \f
 425 /*
 426 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 427 %                                                                             %
 428 %                                                                             %
 429 %                                                                             %
 430 %   W r i t e R A W I m a g e                                                 %
 431 %                                                                             %
 432 %                                                                             %
 433 %                                                                             %
 434 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 435 %
 436 %  WriteRAWImage() writes an image to a file as raw intensity values.
 437 %
 438 %  The format of the WriteRAWImage method is:
 439 %
 440 %      MagickBooleanType WriteRAWImage(const ImageInfo *image_info,Image *image)
 441 %
 442 %  A description of each parameter follows.
 443 %
 444 %    o image_info: the image info.
 445 %
 446 %    o image:  The image.
 447 %
 448 */
 449 static MagickBooleanType WriteRAWImage(const ImageInfo *image_info,Image *image)
 450 {
 451   long
 452     y;
 453
 454   MagickOffsetType
 455     scene;
 456
 457   QuantumInfo
 458     *quantum_info;
 459
 460   QuantumType
 461     quantum_type;
 462
 463   MagickBooleanType
 464     status;
 465
 466   register const PixelPacket
 467     *p;
 468
 469   ssize_t
 470     count;
 471
 472   size_t
 473     length;
 474
 475   unsigned char
 476     *pixels;
 477
 478   /*
 479     Open output image file.
 480   */
 481   assert(image_info != (const ImageInfo *) NULL);
 482   assert(image_info->signature == MagickSignature);
 483   assert(image != (Image *) NULL);
 484   assert(image->signature == MagickSignature);
 485   if (image->debug != MagickFalse)
 486     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 487   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
 488   if (status == MagickFalse)
 489     return(status);
 490   switch (*image->magick)
 491   {
 492     case 'A':
 493     case 'a':
 494     {
 495       quantum_type=AlphaQuantum;
 496       break;
 497     }
 498     case 'B':
 499     case 'b':
 500     {
 501       quantum_type=BlueQuantum;
 502       break;
 503     }
 504     case 'C':
 505     case 'c':
 506     {
 507       quantum_type=CyanQuantum;
 508       if (image->colorspace == CMYKColorspace)
 509         break;
 510       ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
 511     }
 512     case 'g':
 513     case 'G':
 514     {
 515       quantum_type=GreenQuantum;
 516       break;
 517     }
 518     case 'I':
 519     case 'i':
 520     {
 521       quantum_type=IndexQuantum;
 522       break;
 523     }
 524     case 'K':
 525     case 'k':
 526     {
 527       quantum_type=BlackQuantum;
 528       if (image->colorspace == CMYKColorspace)
 529         break;
 530       ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
 531     }
 532     case 'M':
 533     case 'm':
 534     {
 535       quantum_type=MagentaQuantum;
 536       if (image->colorspace == CMYKColorspace)
 537         break;
 538       ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
 539     }
 540     case 'o':
 541     case 'O':
 542     {
 543       quantum_type=OpacityQuantum;
 544       break;
 545     }
 546     case 'R':
 547     case 'r':
 548     {
 549       quantum_type=RedQuantum;
 550       break;
 551     }
 552     case 'Y':
 553     case 'y':
 554     {
 555       quantum_type=YellowQuantum;
 556       if (image->colorspace == CMYKColorspace)
 557         break;
 558       ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
 559     }
 560     default:
 561     {
 562       quantum_type=GrayQuantum;
 563       break;
 564     }
 565   }
 566   scene=0;
 567   do
 568   {
 569     /*
 570       Convert image to RAW raster pixels.
 571     */
 572     quantum_info=AcquireQuantumInfo(image_info,image);
 573     if (quantum_info == (QuantumInfo *) NULL)
 574       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
 575     pixels=GetQuantumPixels(quantum_info);
 576     for (y=0; y < (long) image->rows; y++)
 577     {
 578       p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
 579       if (p == (const PixelPacket *) NULL)
 580         break;
 581       length=ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info,
 582         quantum_type,pixels,&image->exception);
 583       count=WriteBlob(image,length,pixels);
 584       if (count != (ssize_t) length)
 585         break;
 586       if (image->previous == (Image *) NULL)
 587         {
 588           status=SetImageProgress(image,SaveImageTag,y,image->rows);
 589           if (status == MagickFalse)
 590             break;
 591         }
 592     }
 593     quantum_info=DestroyQuantumInfo(quantum_info);
 594     if (GetNextImageInList(image) == (Image *) NULL)
 595       break;
 596     image=SyncNextImageInList(image);
 597     status=SetImageProgress(image,SaveImagesTag,scene++,
 598       GetImageListLength(image));
 599     if (status == MagickFalse)
 600       break;
 601   } while (image_info->adjoin != MagickFalse);
 602   (void) CloseBlob(image);
 603   return(MagickTrue);
 604 }