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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                              CCC  U   U  TTTTT                              %
   6 %                             C     U   U    T                                %
   7 %                             C     U   U    T                                %
   8 %                             C     U   U    T                                %
   9 %                              CCC   UUU     T                                %
  10 %                                                                             %
  11 %                                                                             %
  12 %                         Read DR Halo Image Format                           %
  13 %                                                                             %
  14 %                              Software Design                                %
  15 %                              Jaroslav Fojtik                                %
  16 %                                 June 2000                                   %
  17 %                                                                             %
  18 %                                                                             %
  19 %  Permission is hereby granted, free of charge, to any person obtaining a    %
  20 %  copy of this software and associated documentation files ("ImageMagick"),  %
  21 %  to deal in ImageMagick without restriction, including without limitation   %
  22 %  the rights to use, copy, modify, merge, publish, distribute, sublicense,   %
  23 %  and/or sell copies of ImageMagick, and to permit persons to whom the       %
  24 %  ImageMagick is furnished to do so, subject to the following conditions:    %
  25 %                                                                             %
  26 %  The above copyright notice and this permission notice shall be included in %
  27 %  all copies or substantial portions of ImageMagick.                         %
  28 %                                                                             %
  29 %  The software is provided "as is", without warranty of any kind, express or %
  30 %  implied, including but not limited to the warranties of merchantability,   %
  31 %  fitness for a particular purpose and noninfringement.  In no event shall   %
  32 %  ImageMagick Studio be liable for any claim, damages or other liability,    %
  33 %  whether in an action of contract, tort or otherwise, arising from, out of  %
  34 %  or in connection with ImageMagick or the use or other dealings in          %
  35 %  ImageMagick.                                                               %
  36 %                                                                             %
  37 %  Except as contained in this notice, the name of the ImageMagick Studio     %
  38 %  shall not be used in advertising or otherwise to promote the sale, use or  %
  39 %  other dealings in ImageMagick without prior written authorization from the %
  40 %  ImageMagick Studio.                                                        %
  41 %                                                                             %
  42 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  43 %
  44 %
  45 */
  46 \f
  47 /*
  48   Include declarations.
  49 */
  50 #include "MagickCore/studio.h"
  51 #include "MagickCore/attribute.h"
  52 #include "MagickCore/blob.h"
  53 #include "MagickCore/blob-private.h"
  54 #include "MagickCore/cache.h"
  55 #include "MagickCore/color.h"
  56 #include "MagickCore/color-private.h"
  57 #include "MagickCore/colormap.h"
  58 #include "MagickCore/colormap-private.h"
  59 #include "MagickCore/exception.h"
  60 #include "MagickCore/exception-private.h"
  61 #include "MagickCore/image.h"
  62 #include "MagickCore/image-private.h"
  63 #include "MagickCore/list.h"
  64 #include "MagickCore/magick.h"
  65 #include "MagickCore/memory_.h"
  66 #include "MagickCore/pixel-accessor.h"
  67 #include "MagickCore/quantum-private.h"
  68 #include "MagickCore/static.h"
  69 #include "MagickCore/string_.h"
  70 #include "MagickCore/module.h"
  71 #include "MagickCore/utility.h"
  72 #include "MagickCore/utility-private.h"
  73 \f
  74 typedef struct
  75 {
  76   unsigned Width;
  77   unsigned Height;
  78   unsigned Reserved;
  79 } CUTHeader;
  80
  81 typedef struct
  82 {
  83   char FileId[2];
  84   unsigned Version;
  85   unsigned Size;
  86   char FileType;
  87   char SubType;
  88   unsigned BoardID;
  89   unsigned GraphicsMode;
  90   unsigned MaxIndex;
  91   unsigned MaxRed;
  92   unsigned MaxGreen;
  93   unsigned MaxBlue;
  94   char PaletteId[20];
  95 } CUTPalHeader;
  96
  97 \f
  98 static void InsertRow(Image *image,ssize_t depth,unsigned char *p,ssize_t y,
  99   ExceptionInfo *exception)
 100 {
 101   size_t bit; ssize_t x;
 102   register Quantum *q;
 103   Quantum index;
 104
 105   index=0;
 106   switch (depth)
 107   {
 108     case 1:  /* Convert bitmap scanline. */
 109       {
 110         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 111         if (q == (Quantum *) NULL)
 112           break;
 113         for (x=0; x < ((ssize_t) image->columns-7); x+=8)
 114         {
 115           for (bit=0; bit < 8; bit++)
 116           {
 117             index=(Quantum) ((((*p) & (0x80 >> bit)) != 0) ? 0x01 : 0x00);
 118             SetPixelIndex(image,index,q);
 119             q+=GetPixelChannels(image);
 120           }
 121           p++;
 122         }
 123         if ((image->columns % 8) != 0)
 124           {
 125             for (bit=0; bit < (image->columns % 8); bit++)
 126               {
 127                 index=(Quantum) ((((*p) & (0x80 >> bit)) != 0) ? 0x01 : 0x00);
 128                 SetPixelIndex(image,index,q);
 129                 q+=GetPixelChannels(image);
 130               }
 131             p++;
 132           }
 133         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 134           break;
 135         break;
 136       }
 137     case 2:  /* Convert PseudoColor scanline. */
 138       {
 139         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 140         if (q == (Quantum *) NULL)
 141           break;
 142         for (x=0; x < ((ssize_t) image->columns-1); x+=2)
 143         {
 144           index=ConstrainColormapIndex(image,(*p >> 6) & 0x3,exception);
 145           SetPixelIndex(image,index,q);
 146           q+=GetPixelChannels(image);
 147           index=ConstrainColormapIndex(image,(*p >> 4) & 0x3,exception);
 148           SetPixelIndex(image,index,q);
 149           q+=GetPixelChannels(image);
 150           index=ConstrainColormapIndex(image,(*p >> 2) & 0x3,exception);
 151           SetPixelIndex(image,index,q);
 152           q+=GetPixelChannels(image);
 153           index=ConstrainColormapIndex(image,(*p) & 0x3,exception);
 154           SetPixelIndex(image,index,q);
 155           q+=GetPixelChannels(image);
 156           p++;
 157         }
 158         if ((image->columns % 4) != 0)
 159           {
 160             index=ConstrainColormapIndex(image,(*p >> 6) & 0x3,exception);
 161             SetPixelIndex(image,index,q);
 162             q+=GetPixelChannels(image);
 163             if ((image->columns % 4) >= 1)
 164
 165               {
 166                 index=ConstrainColormapIndex(image,(*p >> 4) & 0x3,exception);
 167                 SetPixelIndex(image,index,q);
 168                 q+=GetPixelChannels(image);
 169                 if ((image->columns % 4) >= 2)
 170
 171                   {
 172                     index=ConstrainColormapIndex(image,(*p >> 2) & 0x3,
 173                       exception);
 174                     SetPixelIndex(image,index,q);
 175                     q+=GetPixelChannels(image);
 176                   }
 177               }
 178             p++;
 179           }
 180         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 181           break;
 182         break;
 183       }
 184
 185     case 4:  /* Convert PseudoColor scanline. */
 186       {
 187         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 188         if (q == (Quantum *) NULL)
 189           break;
 190         for (x=0; x < ((ssize_t) image->columns-1); x+=2)
 191         {
 192             index=ConstrainColormapIndex(image,(*p >> 4) & 0xf,exception);
 193             SetPixelIndex(image,index,q);
 194             q+=GetPixelChannels(image);
 195             index=ConstrainColormapIndex(image,(*p) & 0xf,exception);
 196             SetPixelIndex(image,index,q);
 197             q+=GetPixelChannels(image);
 198             p++;
 199           }
 200         if ((image->columns % 2) != 0)
 201           {
 202             index=ConstrainColormapIndex(image,(*p >> 4) & 0xf,exception);
 203             SetPixelIndex(image,index,q);
 204             q+=GetPixelChannels(image);
 205             p++;
 206           }
 207         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 208           break;
 209         break;
 210       }
 211     case 8: /* Convert PseudoColor scanline. */
 212       {
 213         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
 214         if (q == (Quantum *) NULL) break;
 215         for (x=0; x < (ssize_t) image->columns; x++)
 216         {
 217           index=ConstrainColormapIndex(image,*p,exception);
 218           SetPixelIndex(image,index,q);
 219           p++;
 220           q+=GetPixelChannels(image);
 221         }
 222         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 223           break;
 224       }
 225       break;
 226
 227     }
 228 }
 229
 230 /*
 231    Compute the number of colors in Grayed R[i]=G[i]=B[i] image
 232 */
 233 static int GetCutColors(Image *image,ExceptionInfo *exception)
 234 {
 235   Quantum
 236     intensity,
 237     scale_intensity;
 238
 239   register Quantum
 240     *q;
 241
 242   ssize_t
 243     x,
 244     y;
 245
 246   intensity=0;
 247   scale_intensity=ScaleCharToQuantum(16);
 248   for (y=0; y < (ssize_t) image->rows; y++)
 249   {
 250     q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
 251     if (q == (Quantum *) NULL)
 252       break;
 253     for (x=0; x < (ssize_t) image->columns; x++)
 254     {
 255       if (intensity < GetPixelRed(image,q))
 256         intensity=GetPixelRed(image,q);
 257       if (intensity >= scale_intensity)
 258         return(255);
 259       q+=GetPixelChannels(image);
 260     }
 261   }
 262   if (intensity < ScaleCharToQuantum(2))
 263     return(2);
 264   if (intensity < ScaleCharToQuantum(16))
 265     return(16);
 266   return((int) intensity);
 267 }
 268 \f
 269 /*
 270 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 271 %                                                                             %
 272 %                                                                             %
 273 %                                                                             %
 274 %   R e a d C U T I m a g e                                                   %
 275 %                                                                             %
 276 %                                                                             %
 277 %                                                                             %
 278 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 279 %
 280 %  ReadCUTImage() reads an CUT X image file and returns it.  It
 281 %  allocates the memory necessary for the new Image structure and returns a
 282 %  pointer to the new image.
 283 %
 284 %  The format of the ReadCUTImage method is:
 285 %
 286 %      Image *ReadCUTImage(const ImageInfo *image_info,ExceptionInfo *exception)
 287 %
 288 %  A description of each parameter follows:
 289 %
 290 %    o image_info: the image info.
 291 %
 292 %    o exception: return any errors or warnings in this structure.
 293 %
 294 */
 295 static Image *ReadCUTImage(const ImageInfo *image_info,ExceptionInfo *exception)
 296 {
 297   Image *image,*palette;
 298   ImageInfo *clone_info;
 299   MagickBooleanType status;
 300
 301   MagickOffsetType
 302     offset;
 303
 304   size_t EncodedByte;
 305   unsigned char RunCount,RunValue,RunCountMasked;
 306   CUTHeader  Header;
 307   CUTPalHeader PalHeader;
 308   ssize_t depth;
 309   ssize_t i,j;
 310   ssize_t ldblk;
 311   unsigned char *BImgBuff=NULL,*ptrB;
 312   register Quantum *q;
 313
 314   /*
 315     Open image file.
 316   */
 317   assert(image_info != (const ImageInfo *) NULL);
 318   assert(image_info->signature == MagickSignature);
 319   if (image_info->debug != MagickFalse)
 320     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 321       image_info->filename);
 322   assert(exception != (ExceptionInfo *) NULL);
 323   assert(exception->signature == MagickSignature);
 324   image=AcquireImage(image_info,exception);
 325   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 326   if (status == MagickFalse)
 327     {
 328       image=DestroyImageList(image);
 329       return((Image *) NULL);
 330     }
 331   /*
 332     Read CUT image.
 333   */
 334   palette=NULL;
 335   clone_info=NULL;
 336   Header.Width=ReadBlobLSBShort(image);
 337   Header.Height=ReadBlobLSBShort(image);
 338   Header.Reserved=ReadBlobLSBShort(image);
 339
 340   if (Header.Width==0 || Header.Height==0 || Header.Reserved!=0)
 341     CUT_KO:  ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 342
 343   /*---This code checks first line of image---*/
 344   EncodedByte=ReadBlobLSBShort(image);
 345   RunCount=(unsigned char) ReadBlobByte(image);
 346   RunCountMasked=RunCount & 0x7F;
 347   ldblk=0;
 348   while((int) RunCountMasked!=0)  /*end of line?*/
 349     {
 350       i=1;
 351       if((int) RunCount<0x80) i=(ssize_t) RunCountMasked;
 352       offset=SeekBlob(image,TellBlob(image)+i,SEEK_SET);
 353       if (offset < 0)
 354         ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 355       if(EOFBlob(image) != MagickFalse) goto CUT_KO;  /*wrong data*/
 356       EncodedByte-=i+1;
 357       ldblk+=(ssize_t) RunCountMasked;
 358
 359       RunCount=(unsigned char) ReadBlobByte(image);
 360       if(EOFBlob(image) != MagickFalse)  goto CUT_KO;  /*wrong data: unexpected eof in line*/
 361       RunCountMasked=RunCount & 0x7F;
 362     }
 363   if(EncodedByte!=1) goto CUT_KO;  /*wrong data: size incorrect*/
 364   i=0;        /*guess a number of bit planes*/
 365   if(ldblk==(int) Header.Width)   i=8;
 366   if(2*ldblk==(int) Header.Width) i=4;
 367   if(8*ldblk==(int) Header.Width) i=1;
 368   if(i==0) goto CUT_KO;    /*wrong data: incorrect bit planes*/
 369   depth=i;
 370
 371   image->columns=Header.Width;
 372   image->rows=Header.Height;
 373   image->depth=8;
 374   image->colors=(size_t) (GetQuantumRange(1UL*i)+1);
 375
 376   if (image_info->ping != MagickFalse) goto Finish;
 377   status=SetImageExtent(image,image->columns,image->rows,exception);
 378   if (status == MagickFalse)
 379     return(DestroyImageList(image));
 380
 381   /* ----- Do something with palette ----- */
 382   if ((clone_info=CloneImageInfo(image_info)) == NULL) goto NoPalette;
 383
 384
 385   i=(ssize_t) strlen(clone_info->filename);
 386   j=i;
 387   while(--i>0)
 388     {
 389       if(clone_info->filename[i]=='.')
 390         {
 391           break;
 392         }
 393       if(clone_info->filename[i]=='/' || clone_info->filename[i]=='\\' ||
 394          clone_info->filename[i]==':' )
 395         {
 396           i=j;
 397           break;
 398         }
 399     }
 400
 401   (void) CopyMagickString(clone_info->filename+i,".PAL",(size_t)
 402     (MaxTextExtent-i));
 403   if((clone_info->file=fopen_utf8(clone_info->filename,"rb"))==NULL)
 404     {
 405       (void) CopyMagickString(clone_info->filename+i,".pal",(size_t)
 406         (MaxTextExtent-i));
 407       if((clone_info->file=fopen_utf8(clone_info->filename,"rb"))==NULL)
 408         {
 409           clone_info->filename[i]='\0';
 410           if((clone_info->file=fopen_utf8(clone_info->filename,"rb"))==NULL)
 411             {
 412               clone_info=DestroyImageInfo(clone_info);
 413               clone_info=NULL;
 414               goto NoPalette;
 415             }
 416         }
 417     }
 418
 419   if( (palette=AcquireImage(clone_info,exception))==NULL ) goto NoPalette;
 420   status=OpenBlob(clone_info,palette,ReadBinaryBlobMode,exception);
 421   if (status == MagickFalse)
 422     {
 423     ErasePalette:
 424       palette=DestroyImage(palette);
 425       palette=NULL;
 426       goto NoPalette;
 427     }
 428
 429
 430   if(palette!=NULL)
 431     {
 432       (void) ReadBlob(palette,2,(unsigned char *) PalHeader.FileId);
 433       if(strncmp(PalHeader.FileId,"AH",2) != 0) goto ErasePalette;
 434       PalHeader.Version=ReadBlobLSBShort(palette);
 435       PalHeader.Size=ReadBlobLSBShort(palette);
 436       PalHeader.FileType=(char) ReadBlobByte(palette);
 437       PalHeader.SubType=(char) ReadBlobByte(palette);
 438       PalHeader.BoardID=ReadBlobLSBShort(palette);
 439       PalHeader.GraphicsMode=ReadBlobLSBShort(palette);
 440       PalHeader.MaxIndex=ReadBlobLSBShort(palette);
 441       PalHeader.MaxRed=ReadBlobLSBShort(palette);
 442       PalHeader.MaxGreen=ReadBlobLSBShort(palette);
 443       PalHeader.MaxBlue=ReadBlobLSBShort(palette);
 444       (void) ReadBlob(palette,20,(unsigned char *) PalHeader.PaletteId);
 445
 446       if(PalHeader.MaxIndex<1) goto ErasePalette;
 447       image->colors=PalHeader.MaxIndex+1;
 448       if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) goto NoMemory;
 449
 450       if(PalHeader.MaxRed==0) PalHeader.MaxRed=(unsigned int) QuantumRange;  /*avoid division by 0*/
 451       if(PalHeader.MaxGreen==0) PalHeader.MaxGreen=(unsigned int) QuantumRange;
 452       if(PalHeader.MaxBlue==0) PalHeader.MaxBlue=(unsigned int) QuantumRange;
 453
 454       for(i=0;i<=(int) PalHeader.MaxIndex;i++)
 455         {      /*this may be wrong- I don't know why is palette such strange*/
 456           j=(ssize_t) TellBlob(palette);
 457           if((j % 512)>512-6)
 458             {
 459               j=((j / 512)+1)*512;
 460               offset=SeekBlob(palette,j,SEEK_SET);
 461               if (offset < 0)
 462                 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 463             }
 464           image->colormap[i].red=(Quantum) ReadBlobLSBShort(palette);
 465           if (QuantumRange != (Quantum) PalHeader.MaxRed)
 466             {
 467               image->colormap[i].red=ClampToQuantum(((double)
 468                 image->colormap[i].red*QuantumRange+(PalHeader.MaxRed>>1))/
 469                 PalHeader.MaxRed);
 470             }
 471           image->colormap[i].green=(Quantum) ReadBlobLSBShort(palette);
 472           if (QuantumRange != (Quantum) PalHeader.MaxGreen)
 473             {
 474               image->colormap[i].green=ClampToQuantum
 475                 (((double) image->colormap[i].green*QuantumRange+(PalHeader.MaxGreen>>1))/PalHeader.MaxGreen);
 476             }
 477           image->colormap[i].blue=(Quantum) ReadBlobLSBShort(palette);
 478           if (QuantumRange != (Quantum) PalHeader.MaxBlue)
 479             {
 480               image->colormap[i].blue=ClampToQuantum
 481                 (((double)image->colormap[i].blue*QuantumRange+(PalHeader.MaxBlue>>1))/PalHeader.MaxBlue);
 482             }
 483
 484         }
 485     }
 486
 487
 488
 489  NoPalette:
 490   if(palette==NULL)
 491     {
 492
 493       image->colors=256;
 494       if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
 495         {
 496         NoMemory:
 497           ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
 498             }
 499
 500       for (i=0; i < (ssize_t)image->colors; i++)
 501         {
 502           image->colormap[i].red=ScaleCharToQuantum((unsigned char) i);
 503           image->colormap[i].green=ScaleCharToQuantum((unsigned char) i);
 504           image->colormap[i].blue=ScaleCharToQuantum((unsigned char) i);
 505         }
 506     }
 507
 508
 509   /* ----- Load RLE compressed raster ----- */
 510   BImgBuff=(unsigned char *) AcquireQuantumMemory((size_t) ldblk,
 511     sizeof(*BImgBuff));  /*Ldblk was set in the check phase*/
 512   if(BImgBuff==NULL) goto NoMemory;
 513
 514   offset=SeekBlob(image,6 /*sizeof(Header)*/,SEEK_SET);
 515   if (offset < 0)
 516     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 517   for (i=0; i < (int) Header.Height; i++)
 518   {
 519       EncodedByte=ReadBlobLSBShort(image);
 520
 521       ptrB=BImgBuff;
 522       j=ldblk;
 523
 524       RunCount=(unsigned char) ReadBlobByte(image);
 525       RunCountMasked=RunCount & 0x7F;
 526
 527       while ((int) RunCountMasked != 0)
 528       {
 529           if((ssize_t) RunCountMasked>j)
 530             {    /*Wrong Data*/
 531               RunCountMasked=(unsigned char) j;
 532               if(j==0)
 533                 {
 534                   break;
 535                 }
 536             }
 537
 538           if((int) RunCount>0x80)
 539             {
 540               RunValue=(unsigned char) ReadBlobByte(image);
 541               (void) ResetMagickMemory(ptrB,(int) RunValue,(size_t) RunCountMasked);
 542             }
 543           else {
 544             (void) ReadBlob(image,(size_t) RunCountMasked,ptrB);
 545           }
 546
 547           ptrB+=(int) RunCountMasked;
 548           j-=(int) RunCountMasked;
 549
 550           if (EOFBlob(image) != MagickFalse) goto Finish;  /* wrong data: unexpected eof in line */
 551           RunCount=(unsigned char) ReadBlobByte(image);
 552           RunCountMasked=RunCount & 0x7F;
 553         }
 554
 555       InsertRow(image,depth,BImgBuff,i,exception);
 556     }
 557   (void) SyncImage(image,exception);
 558
 559
 560   /*detect monochrome image*/
 561
 562   if(palette==NULL)
 563     {    /*attempt to detect binary (black&white) images*/
 564       if ((image->storage_class == PseudoClass) &&
 565           (IsImageGray(image,exception) != MagickFalse))
 566         {
 567           if(GetCutColors(image,exception)==2)
 568             {
 569               for (i=0; i < (ssize_t)image->colors; i++)
 570                 {
 571                   register Quantum
 572                     sample;
 573                   sample=ScaleCharToQuantum((unsigned char) i);
 574                   if(image->colormap[i].red!=sample) goto Finish;
 575                   if(image->colormap[i].green!=sample) goto Finish;
 576                   if(image->colormap[i].blue!=sample) goto Finish;
 577                 }
 578
 579               image->colormap[1].red=image->colormap[1].green=
 580                 image->colormap[1].blue=QuantumRange;
 581               for (i=0; i < (ssize_t)image->rows; i++)
 582                 {
 583                   q=QueueAuthenticPixels(image,0,i,image->columns,1,exception);
 584                   for (j=0; j < (ssize_t)image->columns; j++)
 585                     {
 586                       if (GetPixelRed(image,q) == ScaleCharToQuantum(1))
 587                         {
 588                           SetPixelRed(image,QuantumRange,q);
 589                           SetPixelGreen(image,QuantumRange,q);
 590                           SetPixelBlue(image,QuantumRange,q);
 591                         }
 592                       q+=GetPixelChannels(image);
 593                     }
 594                   if (SyncAuthenticPixels(image,exception) == MagickFalse) goto Finish;
 595                 }
 596             }
 597         }
 598     }
 599
 600  Finish:
 601   if (BImgBuff != NULL)
 602     BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
 603   if (palette != NULL)
 604     palette=DestroyImage(palette);
 605   if (clone_info != NULL)
 606     clone_info=DestroyImageInfo(clone_info);
 607   if (EOFBlob(image) != MagickFalse)
 608     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
 609       image->filename);
 610   (void) CloseBlob(image);
 611   return(GetFirstImageInList(image));
 612 }
 613 \f
 614 /*
 615 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 616 %                                                                             %
 617 %                                                                             %
 618 %                                                                             %
 619 %   R e g i s t e r C U T I m a g e                                           %
 620 %                                                                             %
 621 %                                                                             %
 622 %                                                                             %
 623 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 624 %
 625 %  RegisterCUTImage() adds attributes for the CUT image format to
 626 %  the list of supported formats.  The attributes include the image format
 627 %  tag, a method to read and/or write the format, whether the format
 628 %  supports the saving of more than one frame to the same file or blob,
 629 %  whether the format supports native in-memory I/O, and a brief
 630 %  description of the format.
 631 %
 632 %  The format of the RegisterCUTImage method is:
 633 %
 634 %      size_t RegisterCUTImage(void)
 635 %
 636 */
 637 ModuleExport size_t RegisterCUTImage(void)
 638 {
 639   MagickInfo
 640     *entry;
 641
 642   entry=SetMagickInfo("CUT");
 643   entry->decoder=(DecodeImageHandler *) ReadCUTImage;
 644   entry->flags|=CoderSeekableStreamFlag;
 645   entry->description=ConstantString("DR Halo");
 646   entry->module=ConstantString("CUT");
 647   (void) RegisterMagickInfo(entry);
 648   return(MagickImageCoderSignature);
 649 }
 650 \f
 651 /*
 652 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 653 %                                                                             %
 654 %                                                                             %
 655 %                                                                             %
 656 %   U n r e g i s t e r C U T I m a g e                                       %
 657 %                                                                             %
 658 %                                                                             %
 659 %                                                                             %
 660 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 661 %
 662 %  UnregisterCUTImage() removes format registrations made by the
 663 %  CUT module from the list of supported formats.
 664 %
 665 %  The format of the UnregisterCUTImage method is:
 666 %
 667 %      UnregisterCUTImage(void)
 668 %
 669 */
 670 ModuleExport void UnregisterCUTImage(void)
 671 {
 672   (void) UnregisterMagickInfo("CUT");
 673 }