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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                            DDDD   PPPP   X   X                              %
   7 %                            D   D  P   P   X X                               %
   8 %                            D   D  PPPP    XXX                               %
   9 %                            D   D  P       X X                               %
  10 %                            DDDD   P      X   X                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                     Read/Write SMTPE DPX Image Format                       %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                March 2001                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2008 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/exception.h"
  48 #include "magick/exception-private.h"
  49 #include "magick/geometry.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/module.h"
  56 #include "magick/monitor.h"
  57 #include "magick/monitor-private.h"
  58 #include "magick/option.h"
  59 #include "magick/profile.h"
  60 #include "magick/property.h"
  61 #include "magick/quantum-private.h"
  62 #include "magick/static.h"
  63 #include "magick/string_.h"
  64 #include "magick/string-private.h"
  65 \f
  66 /*
  67   Typedef declaration.
  68 */
  69 typedef enum
  70 {
  71   UserDefinedColorimetric = 0,
  72   PrintingDensityColorimetric = 1,
  73   LinearColorimetric = 2,
  74   LogarithmicColorimetric = 3,
  75   UnspecifiedVideoColorimetric = 4,
  76   SMTPE_274MColorimetric = 5,
  77   ITU_R709Colorimetric = 6,
  78   ITU_R601_625LColorimetric = 7,
  79   ITU_R601_525LColorimetric = 8,
  80   NTSCCompositeVideoColorimetric = 9,
  81   PALCompositeVideoColorimetric = 10,
  82   ZDepthLinearColorimetric = 11,
  83   DepthHomogeneousColorimetric = 12
  84 } DPXColorimetric;
  85
  86 typedef enum
  87 {
  88   UndefinedComponentType = 0,
  89   RedComponentType = 1,
  90   GreenComponentType = 2,
  91   BlueComponentType = 3,
  92   AlphaComponentType = 4,
  93   LumaComponentType = 6,
  94   ColorDifferenceCbCrComponentType = 7,
  95   DepthComponentType = 8,
  96   CompositeVideoComponentType = 9,
  97   RGBComponentType = 50,
  98   RGBAComponentType = 51,
  99   ABGRComponentType = 52,
 100   CbYCrY422ComponentType = 100,
 101   CbYACrYA4224ComponentType = 101,
 102   CbYCr444ComponentType = 102,
 103   CbYCrA4444ComponentType = 103,
 104   UserDef2ElementComponentType = 150,
 105   UserDef3ElementComponentType = 151,
 106   UserDef4ElementComponentType = 152,
 107   UserDef5ElementComponentType = 153,
 108   UserDef6ElementComponentType = 154,
 109   UserDef7ElementComponentType = 155,
 110   UserDef8ElementComponentType = 156
 111 } DPXComponentType;
 112
 113 typedef struct _DPXFileInfo
 114 {
 115   unsigned int
 116     magic,
 117     image_offset;
 118
 119   char
 120     version[8];
 121
 122   unsigned int
 123     file_size,
 124     ditto_key,
 125     generic_size,
 126     industry_size,
 127     user_size;
 128
 129   char
 130     filename[100],
 131     timestamp[24],
 132     creator[100],
 133     project[200],
 134     copyright[200];
 135
 136   unsigned int
 137     encrypt_key;
 138
 139   char
 140     reserve[104];
 141 } DPXFileInfo;
 142
 143 typedef struct _DPXFilmInfo
 144 {
 145   char
 146     id[2],
 147     type[2],
 148     offset[2],
 149     prefix[6],
 150     count[4],
 151     format[32];
 152
 153   unsigned int
 154     frame_position,
 155     sequence_extent,
 156     held_count;
 157
 158   float
 159     frame_rate,
 160     shutter_angle;
 161
 162   char
 163     frame_id[32],
 164     slate[100],
 165     reserve[56];
 166 } DPXFilmInfo;
 167
 168 typedef struct _DPXImageElement
 169 {
 170   unsigned int
 171     data_sign,
 172     low_data;
 173
 174   float
 175     low_quantity;
 176
 177   unsigned int
 178     high_data;
 179
 180   float
 181     high_quantity;
 182
 183   unsigned char
 184     descriptor,
 185     transfer,
 186     colorimetric,
 187     bit_size;
 188
 189   unsigned short
 190     packing,
 191     encoding;
 192
 193   unsigned int
 194     data_offset,
 195     end_of_line_padding,
 196     end_of_image_padding;
 197
 198   unsigned char
 199     description[32];
 200 } DPXImageElement;
 201
 202 typedef struct _DPXImageInfo
 203 {
 204   unsigned short
 205     orientation,
 206     number_elements;
 207
 208   unsigned int
 209     pixels_per_line,
 210     lines_per_element;
 211
 212   DPXImageElement
 213     image_element[8];
 214
 215   unsigned char
 216     reserve[52];
 217 } DPXImageInfo;
 218
 219 typedef struct _DPXOrientationInfo
 220 {
 221   unsigned int
 222     x_offset,
 223     y_offset;
 224
 225   float
 226     x_center,
 227     y_center;
 228
 229   unsigned int
 230     x_size,
 231     y_size;
 232
 233   char
 234     filename[100],
 235     timestamp[24],
 236     device[32],
 237     serial[32];
 238
 239   unsigned short
 240     border[4];
 241
 242   unsigned int
 243     aspect_ratio[2];
 244
 245   unsigned char
 246     reserve[28];
 247 } DPXOrientationInfo;
 248
 249 typedef struct _DPXTelevisionInfo
 250 {
 251   unsigned int
 252     time_code,
 253     user_bits;
 254
 255   unsigned char
 256     interlace,
 257     field_number,
 258     video_signal,
 259     padding;
 260
 261   float
 262     horizontal_sample_rate,
 263     vertical_sample_rate,
 264     frame_rate,
 265     time_offset,
 266     gamma,
 267     black_level,
 268     black_gain,
 269     break_point,
 270     white_level,
 271     integration_times;
 272
 273   char
 274     reserve[76];
 275 } DPXTelevisionInfo;
 276
 277 typedef struct _DPXUserInfo
 278 {
 279   char
 280     id[32];
 281 } DPXUserInfo;
 282
 283 typedef struct DPXInfo
 284 {
 285   DPXFileInfo
 286     file;
 287
 288   DPXImageInfo
 289     image;
 290
 291   DPXOrientationInfo
 292     orientation;
 293
 294   DPXFilmInfo
 295     film;
 296
 297   DPXTelevisionInfo
 298     television;
 299
 300   DPXUserInfo
 301     user;
 302 } DPXInfo;
 303 \f
 304 /*
 305   Forward declaractions.
 306 */
 307 static MagickBooleanType
 308   WriteDPXImage(const ImageInfo *,Image *);
 309 \f
 310 /*
 311 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 312 %                                                                             %
 313 %                                                                             %
 314 %                                                                             %
 315 %   I s D P X                                                                 %
 316 %                                                                             %
 317 %                                                                             %
 318 %                                                                             %
 319 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 320 %
 321 %  IsDPX() returns MagickTrue if the image format type, identified by the
 322 %  magick string, is DPX.
 323 %
 324 %  The format of the IsDPX method is:
 325 %
 326 %      MagickBooleanType IsDPX(const unsigned char *magick,const size_t extent)
 327 %
 328 %  A description of each parameter follows:
 329 %
 330 %    o magick: compare image format pattern against these bytes.
 331 %
 332 %    o extent: Specifies the extent of the magick string.
 333 %
 334 */
 335 static MagickBooleanType IsDPX(const unsigned char *magick,const size_t extent)
 336 {
 337   if (extent < 4)
 338     return(MagickFalse);
 339   if (memcmp(magick,"SDPX",4) == 0)
 340     return(MagickTrue);
 341   if (memcmp(magick,"XPDS",4) == 0)
 342     return(MagickTrue);
 343   return(MagickFalse);
 344 }
 345 \f
 346 /*
 347 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 348 %                                                                             %
 349 %                                                                             %
 350 %                                                                             %
 351 %   R e a d D P X I m a g e                                                   %
 352 %                                                                             %
 353 %                                                                             %
 354 %                                                                             %
 355 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 356 %
 357 %  ReadDPXImage() reads an DPX X image file and returns it.  It
 358 %  allocates the memory necessary for the new Image structure and returns a
 359 %  pointer to the new image.
 360 %
 361 %  The format of the ReadDPXImage method is:
 362 %
 363 %      Image *ReadDPXImage(const ImageInfo *image_info,ExceptionInfo *exception)
 364 %
 365 %  A description of each parameter follows:
 366 %
 367 %    o image_info: the image info.
 368 %
 369 %    o exception: return any errors or warnings in this structure.
 370 %
 371 */
 372
 373 static size_t GetBytesPerRow(size_t columns,
 374   size_t samples_per_pixel,size_t bits_per_pixel,
 375   MagickBooleanType pad)
 376 {
 377   size_t
 378     bytes_per_row;
 379
 380   switch (bits_per_pixel)
 381   {
 382     case 1:
 383     {
 384       bytes_per_row=4*(((size_t) samples_per_pixel*columns*
 385         bits_per_pixel+31)/32);
 386       break;
 387     }
 388     case 8:
 389     default:
 390     {
 391       bytes_per_row=4*(((size_t) samples_per_pixel*columns*
 392         bits_per_pixel+31)/32);
 393       break;
 394     }
 395     case 10:
 396     {
 397       if (pad == MagickFalse)
 398         {
 399           bytes_per_row=4*(((size_t) samples_per_pixel*columns*
 400             bits_per_pixel+31)/32);
 401           break;
 402         }
 403       bytes_per_row=4*(((size_t) (32*((samples_per_pixel*columns+2)/3))+31)/32);
 404       break;
 405     }
 406     case 12:
 407     {
 408       if (pad == MagickFalse)
 409         {
 410           bytes_per_row=4*(((size_t) samples_per_pixel*columns*
 411             bits_per_pixel+31)/32);
 412           break;
 413         }
 414       bytes_per_row=2*(((size_t) (16*samples_per_pixel*columns)+15)/16);
 415       break;
 416     }
 417     case 16:
 418     {
 419       bytes_per_row=2*(((size_t) samples_per_pixel*columns*
 420         bits_per_pixel+8)/16);
 421       break;
 422     }
 423     case 32:
 424     {
 425       bytes_per_row=4*(((size_t) samples_per_pixel*columns*
 426         bits_per_pixel+31)/32);
 427       break;
 428     }
 429     case 64:
 430     {
 431       bytes_per_row=8*(((size_t) samples_per_pixel*columns*
 432         bits_per_pixel+63)/64);
 433       break;
 434     }
 435   }
 436   return(bytes_per_row);
 437 }
 438
 439 static inline MagickBooleanType IsFloatDefined(const float value)
 440 {
 441   union
 442   {
 443     unsigned int
 444       unsigned_value;
 445
 446     double
 447       float_value;
 448   } quantum;
 449
 450   quantum.unsigned_value=0U;
 451   quantum.float_value=(double) value;
 452   if (quantum.unsigned_value == 0U)
 453     return(MagickFalse);
 454   return(MagickTrue);
 455 }
 456
 457 static void SetPrimaryChromaticity(const DPXColorimetric colorimetric,
 458   ChromaticityInfo *chromaticity_info)
 459 {
 460   switch(colorimetric)
 461   {
 462     case SMTPE_274MColorimetric:
 463     case ITU_R709Colorimetric:
 464     {
 465       chromaticity_info->red_primary.x=0.640;
 466       chromaticity_info->red_primary.y=0.330;
 467       chromaticity_info->red_primary.z=0.030;
 468       chromaticity_info->green_primary.x=0.300;
 469       chromaticity_info->green_primary.y=0.600;
 470       chromaticity_info->green_primary.z=0.100;
 471       chromaticity_info->blue_primary.x=0.150;
 472       chromaticity_info->blue_primary.y=0.060;
 473       chromaticity_info->blue_primary.z=0.790;
 474       chromaticity_info->white_point.x=0.3127;
 475       chromaticity_info->white_point.y=0.3290;
 476       chromaticity_info->white_point.z=0.3582;
 477       break;
 478     }
 479     case NTSCCompositeVideoColorimetric:
 480     {
 481       chromaticity_info->red_primary.x=0.67;
 482       chromaticity_info->red_primary.y=0.33;
 483       chromaticity_info->red_primary.z=0.00;
 484       chromaticity_info->green_primary.x=0.21;
 485       chromaticity_info->green_primary.y=0.71;
 486       chromaticity_info->green_primary.z=0.08;
 487       chromaticity_info->blue_primary.x=0.14;
 488       chromaticity_info->blue_primary.y=0.08;
 489       chromaticity_info->blue_primary.z=0.78;
 490       chromaticity_info->white_point.x=0.310;
 491       chromaticity_info->white_point.y=0.316;
 492       chromaticity_info->white_point.z=0.374;
 493       break;
 494     }
 495     case PALCompositeVideoColorimetric:
 496     {
 497       chromaticity_info->red_primary.x=0.640;
 498       chromaticity_info->red_primary.y=0.330;
 499       chromaticity_info->red_primary.z=0.030;
 500       chromaticity_info->green_primary.x=0.290;
 501       chromaticity_info->green_primary.y=0.600;
 502       chromaticity_info->green_primary.z=0.110;
 503       chromaticity_info->blue_primary.x=0.150;
 504       chromaticity_info->blue_primary.y=0.060;
 505       chromaticity_info->blue_primary.z=0.790;
 506       chromaticity_info->white_point.x=0.3127;
 507       chromaticity_info->white_point.y=0.3290;
 508       chromaticity_info->white_point.z=0.3582;
 509       break;
 510     }
 511     default:
 512       break;
 513   }
 514 }
 515
 516 static void TimeCodeToString(const size_t timestamp,char *code)
 517 {
 518 #define TimeFields  7
 519
 520   unsigned int
 521     shift;
 522
 523   register ssize_t
 524     i;
 525
 526   *code='\0';
 527   shift=4*TimeFields;
 528   for (i=0; i <= TimeFields; i++)
 529   {
 530     (void) FormatMagickString(code,MaxTextExtent-strlen(code),"%x",
 531       (unsigned int) ((timestamp >> shift) & 0x0fU));
 532     code++;
 533     if (((i % 2) != 0) && (i < TimeFields))
 534       *code++=':';
 535     shift-=4;
 536     *code='\0';
 537   }
 538 }
 539
 540 static Image *ReadDPXImage(const ImageInfo *image_info,ExceptionInfo *exception)
 541 {
 542   char
 543     magick[4],
 544     value[MaxTextExtent];
 545
 546   DPXInfo
 547     dpx;
 548
 549   Image
 550     *image;
 551
 552   MagickBooleanType
 553     status;
 554
 555   MagickOffsetType
 556     offset;
 557
 558   QuantumInfo
 559     *quantum_info;
 560
 561   QuantumType
 562     quantum_type;
 563
 564   register ssize_t
 565     i;
 566
 567   size_t
 568     extent,
 569     samples_per_pixel;
 570
 571   ssize_t
 572     count,
 573     row,
 574     y;
 575
 576   unsigned char
 577     component_type;
 578
 579   /*
 580     Open image file.
 581   */
 582   assert(image_info != (const ImageInfo *) NULL);
 583   assert(image_info->signature == MagickSignature);
 584   if (image_info->debug != MagickFalse)
 585     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 586       image_info->filename);
 587   assert(exception != (ExceptionInfo *) NULL);
 588   assert(exception->signature == MagickSignature);
 589   image=AcquireImage(image_info);
 590   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 591   if (status == MagickFalse)
 592     {
 593       image=DestroyImageList(image);
 594       return((Image *) NULL);
 595     }
 596   /*
 597     Read DPX file header.
 598   */
 599   offset=0;
 600   count=ReadBlob(image,4,(unsigned char *) magick);
 601   offset+=count;
 602   if ((count != 4) || ((LocaleNCompare(magick,"SDPX",4) != 0) &&
 603       (LocaleNCompare((char *) magick,"XPDS",4) != 0)))
 604     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 605   image->endian=LSBEndian;
 606   if (LocaleNCompare(magick,"SDPX",4) == 0)
 607     image->endian=MSBEndian;
 608   (void) ResetMagickMemory(&dpx,0,sizeof(dpx));
 609   dpx.file.image_offset=ReadBlobLong(image);
 610   offset+=4;
 611   offset+=ReadBlob(image,sizeof(dpx.file.version),(unsigned char *)
 612     dpx.file.version);
 613   (void) FormatImageProperty(image,"dpx:file.version","%.8s",dpx.file.version);
 614   dpx.file.file_size=ReadBlobLong(image);
 615   offset+=4;
 616   dpx.file.ditto_key=ReadBlobLong(image);
 617   offset+=4;
 618   if (dpx.file.ditto_key != ~0U)
 619     (void) FormatImageProperty(image,"dpx:file.ditto.key","%u",
 620       dpx.file.ditto_key);
 621   dpx.file.generic_size=ReadBlobLong(image);
 622   offset+=4;
 623   dpx.file.industry_size=ReadBlobLong(image);
 624   offset+=4;
 625   dpx.file.user_size=ReadBlobLong(image);
 626   offset+=4;
 627   offset+=ReadBlob(image,sizeof(dpx.file.filename),(unsigned char *)
 628     dpx.file.filename);
 629   (void) FormatImageProperty(image,"dpx:file.filename","%.100s",
 630     dpx.file.filename);
 631   (void) FormatImageProperty(image,"document","%.100s",dpx.file.filename);
 632   offset+=ReadBlob(image,sizeof(dpx.file.timestamp),(unsigned char *)
 633     dpx.file.timestamp);
 634   if (*dpx.file.timestamp != '\0')
 635     (void) FormatImageProperty(image,"dpx:file.timestamp","%.24s",
 636       dpx.file.timestamp);
 637   offset+=ReadBlob(image,sizeof(dpx.file.creator),(unsigned char *)
 638     dpx.file.creator);
 639   if (*dpx.file.creator != '\0')
 640     {
 641       (void) FormatImageProperty(image,"dpx:file.creator","%.100s",
 642         dpx.file.creator);
 643       (void) FormatImageProperty(image,"software","%.100s",dpx.file.creator);
 644     }
 645   offset+=ReadBlob(image,sizeof(dpx.file.project),(unsigned char *)
 646     dpx.file.project);
 647   if (*dpx.file.project != '\0')
 648     {
 649       (void) FormatImageProperty(image,"dpx:file.project","%.200s",
 650         dpx.file.project);
 651       (void) FormatImageProperty(image,"comment","%.100s",dpx.file.project);
 652     }
 653   offset+=ReadBlob(image,sizeof(dpx.file.copyright),(unsigned char *)
 654     dpx.file.copyright);
 655   if (*dpx.file.copyright != '\0')
 656     {
 657       (void) FormatImageProperty(image,"dpx:file.copyright","%.200s",
 658         dpx.file.copyright);
 659       (void) FormatImageProperty(image,"copyright","%.100s",
 660         dpx.file.copyright);
 661     }
 662   dpx.file.encrypt_key=ReadBlobLong(image);
 663   offset+=4;
 664   if (dpx.file.encrypt_key != ~0U)
 665     (void) FormatImageProperty(image,"dpx:file.encrypt_key","%u",
 666       dpx.file.encrypt_key);
 667   offset+=ReadBlob(image,sizeof(dpx.file.reserve),(unsigned char *)
 668     dpx.file.reserve);
 669   /*
 670     Read DPX image header.
 671   */
 672   dpx.image.orientation=ReadBlobShort(image);
 673   offset+=2;
 674   if (dpx.image.orientation != (unsigned short) (~0U))
 675     (void) FormatImageProperty(image,"dpx:image.orientation","%d",
 676       dpx.image.orientation);
 677   switch (dpx.image.orientation)
 678   {
 679     default:
 680     case 0: image->orientation=TopLeftOrientation; break;
 681     case 1: image->orientation=TopRightOrientation; break;
 682     case 2: image->orientation=BottomLeftOrientation; break;
 683     case 3: image->orientation=BottomRightOrientation; break;
 684     case 4: image->orientation=LeftTopOrientation; break;
 685     case 5: image->orientation=RightTopOrientation; break;
 686     case 6: image->orientation=LeftBottomOrientation; break;
 687     case 7: image->orientation=RightBottomOrientation; break;
 688   }
 689   dpx.image.number_elements=ReadBlobShort(image);
 690   offset+=2;
 691   dpx.image.pixels_per_line=ReadBlobLong(image);
 692   offset+=4;
 693   image->columns=dpx.image.pixels_per_line;
 694   dpx.image.lines_per_element=ReadBlobLong(image);
 695   offset+=4;
 696   image->rows=dpx.image.lines_per_element;
 697   for (i=0; i < 8; i++)
 698   {
 699     dpx.image.image_element[i].data_sign=ReadBlobLong(image);
 700     offset+=4;
 701     dpx.image.image_element[i].low_data=ReadBlobLong(image);
 702     offset+=4;
 703     dpx.image.image_element[i].low_quantity=ReadBlobFloat(image);
 704     offset+=4;
 705     dpx.image.image_element[i].high_data=ReadBlobLong(image);
 706     offset+=4;
 707     dpx.image.image_element[i].high_quantity=ReadBlobFloat(image);
 708     offset+=4;
 709     dpx.image.image_element[i].descriptor=(unsigned char) ReadBlobByte(image);
 710     offset++;
 711     dpx.image.image_element[i].transfer=(unsigned char) ReadBlobByte(image);
 712     offset++;
 713     dpx.image.image_element[i].colorimetric=(unsigned char) ReadBlobByte(image);
 714     offset++;
 715     dpx.image.image_element[i].bit_size=(unsigned char) ReadBlobByte(image);
 716     offset++;
 717     dpx.image.image_element[i].packing=ReadBlobShort(image);
 718     offset+=2;
 719     dpx.image.image_element[i].encoding=ReadBlobShort(image);
 720     offset+=2;
 721     dpx.image.image_element[i].data_offset=ReadBlobLong(image);
 722     offset+=4;
 723     dpx.image.image_element[i].end_of_line_padding=ReadBlobLong(image);
 724     offset+=4;
 725     dpx.image.image_element[i].end_of_image_padding=ReadBlobLong(image);
 726     offset+=4;
 727     offset+=ReadBlob(image,sizeof(dpx.image.image_element[i].description),
 728       (unsigned char *) dpx.image.image_element[i].description);
 729   }
 730   SetPrimaryChromaticity((DPXColorimetric)
 731     dpx.image.image_element[0].colorimetric,&image->chromaticity);
 732   offset+=ReadBlob(image,sizeof(dpx.image.reserve),(unsigned char *)
 733     dpx.image.reserve);
 734   component_type=dpx.image.image_element[0].descriptor;
 735   image->depth=dpx.image.image_element[0].bit_size;
 736   if (dpx.file.image_offset >= 1664U)
 737     {
 738       /*
 739         Read DPX orientation header.
 740       */
 741       dpx.orientation.x_offset=ReadBlobLong(image);
 742       offset+=4;
 743       if (dpx.orientation.x_offset != ~0U)
 744         (void) FormatImageProperty(image,"dpx:orientation.x_offset","%u",
 745           dpx.orientation.x_offset);
 746       dpx.orientation.y_offset=ReadBlobLong(image);
 747       offset+=4;
 748       if (dpx.orientation.y_offset != ~0U)
 749         (void) FormatImageProperty(image,"dpx:orientation.y_offset","%u",
 750           dpx.orientation.y_offset);
 751       dpx.orientation.x_center=ReadBlobFloat(image);
 752       offset+=4;
 753       if (IsFloatDefined(dpx.orientation.x_center) != MagickFalse)
 754         (void) FormatImageProperty(image,"dpx:orientation.x_center","%g",
 755           dpx.orientation.x_center);
 756       dpx.orientation.y_center=ReadBlobFloat(image);
 757       offset+=4;
 758       if (IsFloatDefined(dpx.orientation.y_center) != MagickFalse)
 759         (void) FormatImageProperty(image,"dpx:orientation.y_center","%g",
 760           dpx.orientation.y_center);
 761       dpx.orientation.x_size=ReadBlobLong(image);
 762       offset+=4;
 763       if (dpx.orientation.x_size != ~0U)
 764         (void) FormatImageProperty(image,"dpx:orientation.x_size","%u",
 765           dpx.orientation.x_size);
 766       dpx.orientation.y_size=ReadBlobLong(image);
 767       offset+=4;
 768       if (dpx.orientation.y_size != ~0U)
 769         (void) FormatImageProperty(image,"dpx:orientation.y_size","%u",
 770           dpx.orientation.y_size);
 771       offset+=ReadBlob(image,sizeof(dpx.orientation.filename),(unsigned char *)
 772         dpx.orientation.filename);
 773       if (*dpx.orientation.filename != '\0')
 774         (void) FormatImageProperty(image,"dpx:orientation.filename","%.100s",
 775           dpx.orientation.filename);
 776       offset+=ReadBlob(image,sizeof(dpx.orientation.timestamp),(unsigned char *)
 777         dpx.orientation.timestamp);
 778       if (*dpx.orientation.timestamp != '\0')
 779         (void) FormatImageProperty(image,"dpx:orientation.timestamp","%.24s",
 780           dpx.orientation.timestamp);
 781       offset+=ReadBlob(image,sizeof(dpx.orientation.device),(unsigned char *)
 782         dpx.orientation.device);
 783       if (*dpx.orientation.device != '\0')
 784         (void) FormatImageProperty(image,"dpx:orientation.device","%.32s",
 785           dpx.orientation.device);
 786       offset+=ReadBlob(image,sizeof(dpx.orientation.serial),(unsigned char *)
 787         dpx.orientation.serial);
 788       if (*dpx.orientation.serial != '\0')
 789         (void) FormatImageProperty(image,"dpx:orientation.serial","%.32s",
 790           dpx.orientation.serial);
 791       for (i=0; i < 4; i++)
 792       {
 793         dpx.orientation.border[i]=ReadBlobShort(image);
 794         offset+=2;
 795       }
 796       if ((dpx.orientation.border[0] != (unsigned short) (~0U)) &&
 797           (dpx.orientation.border[1] != (unsigned short) (~0U)))
 798         (void) FormatImageProperty(image,"dpx:orientation.border","%dx%d%+d%+d",          dpx.orientation.border[0],dpx.orientation.border[1],
 799           dpx.orientation.border[2],dpx.orientation.border[3]);
 800       for (i=0; i < 2; i++)
 801       {
 802         dpx.orientation.aspect_ratio[i]=ReadBlobLong(image);
 803         offset+=4;
 804       }
 805       if ((dpx.orientation.aspect_ratio[0] != ~0U) &&
 806           (dpx.orientation.aspect_ratio[1] != ~0U))
 807         (void) FormatImageProperty(image,"dpx:orientation.aspect_ratio",
 808           "%ux%u",dpx.orientation.aspect_ratio[0],
 809           dpx.orientation.aspect_ratio[1]);
 810       offset+=ReadBlob(image,sizeof(dpx.orientation.reserve),(unsigned char *)
 811         dpx.orientation.reserve);
 812     }
 813   if (dpx.file.image_offset >= 1920U)
 814     {
 815       /*
 816         Read DPX film header.
 817       */
 818       offset+=ReadBlob(image,sizeof(dpx.film.id),(unsigned char *) dpx.film.id);
 819       if (*dpx.film.type != '\0')
 820         (void) FormatImageProperty(image,"dpx:film.id","%.2s",dpx.film.id);
 821       offset+=ReadBlob(image,sizeof(dpx.film.type),(unsigned char *)
 822         dpx.film.type);
 823       if (*dpx.film.type != '\0')
 824         (void) FormatImageProperty(image,"dpx:film.type","%.2s",dpx.film.type);
 825       offset+=ReadBlob(image,sizeof(dpx.film.offset),(unsigned char *)
 826         dpx.film.offset);
 827       if (*dpx.film.offset != '\0')
 828         (void) FormatImageProperty(image,"dpx:film.offset","%.2s",
 829           dpx.film.offset);
 830       offset+=ReadBlob(image,sizeof(dpx.film.prefix),(unsigned char *)
 831         dpx.film.prefix);
 832       if (*dpx.film.prefix != '\0')
 833         (void) FormatImageProperty(image,"dpx:film.prefix","%.6s",
 834           dpx.film.prefix);
 835       offset+=ReadBlob(image,sizeof(dpx.film.count),(unsigned char *)
 836         dpx.film.count);
 837       if (*dpx.film.count != '\0')
 838         (void) FormatImageProperty(image,"dpx:film.count","%.4s",
 839           dpx.film.count);
 840       offset+=ReadBlob(image,sizeof(dpx.film.format),(unsigned char *)
 841         dpx.film.format);
 842       if (*dpx.film.format != '\0')
 843         (void) FormatImageProperty(image,"dpx:film.format","%.4s",
 844           dpx.film.format);
 845       dpx.film.frame_position=ReadBlobLong(image);
 846       offset+=4;
 847       if (dpx.film.frame_position != ~0U)
 848         (void) FormatImageProperty(image,"dpx:film.frame_position","%u",
 849           dpx.film.frame_position);
 850       dpx.film.sequence_extent=ReadBlobLong(image);
 851       offset+=4;
 852       if (dpx.film.sequence_extent != ~0U)
 853         (void) FormatImageProperty(image,"dpx:film.sequence_extent","%u",
 854           dpx.film.sequence_extent);
 855       dpx.film.held_count=ReadBlobLong(image);
 856       offset+=4;
 857       if (dpx.film.held_count != ~0U)
 858         (void) FormatImageProperty(image,"dpx:film.held_count","%u",
 859           dpx.film.held_count);
 860       dpx.film.frame_rate=ReadBlobFloat(image);
 861       offset+=4;
 862       if (IsFloatDefined(dpx.film.frame_rate) != MagickFalse)
 863         (void) FormatImageProperty(image,"dpx:film.frame_rate","%g",
 864           dpx.film.frame_rate);
 865       dpx.film.shutter_angle=ReadBlobFloat(image);
 866       offset+=4;
 867       if (IsFloatDefined(dpx.film.shutter_angle) != MagickFalse)
 868         (void) FormatImageProperty(image,"dpx:film.shutter_angle","%g",
 869           dpx.film.shutter_angle);
 870       offset+=ReadBlob(image,sizeof(dpx.film.frame_id),(unsigned char *)
 871         dpx.film.frame_id);
 872       if (*dpx.film.frame_id != '\0')
 873         (void) FormatImageProperty(image,"dpx:film.frame_id","%.32s",
 874           dpx.film.frame_id);
 875       offset+=ReadBlob(image,sizeof(dpx.film.slate),(unsigned char *)
 876         dpx.film.slate);
 877       if (*dpx.film.slate != '\0')
 878         (void) FormatImageProperty(image,"dpx:film.slate","%.100s",
 879           dpx.film.slate);
 880       offset+=ReadBlob(image,sizeof(dpx.film.reserve),(unsigned char *)
 881         dpx.film.reserve);
 882     }
 883   if (dpx.file.image_offset >= 2048U)
 884     {
 885       /*
 886         Read DPX television header.
 887       */
 888       dpx.television.time_code=(unsigned int) ReadBlobLong(image);
 889       offset+=4;
 890       TimeCodeToString(dpx.television.time_code,value);
 891       (void) SetImageProperty(image,"dpx:television.time.code",value);
 892       dpx.television.user_bits=(unsigned int) ReadBlobLong(image);
 893       offset+=4;
 894       TimeCodeToString(dpx.television.user_bits,value);
 895       (void) SetImageProperty(image,"dpx:television.user.bits",value);
 896       dpx.television.interlace=(unsigned char) ReadBlobByte(image);
 897       offset++;
 898       if (dpx.television.interlace != 0)
 899         (void) FormatImageProperty(image,"dpx:television.interlace","%.20g",
 900           (double) dpx.television.interlace);
 901       dpx.television.field_number=(unsigned char) ReadBlobByte(image);
 902       offset++;
 903       if (dpx.television.field_number != 0)
 904         (void) FormatImageProperty(image,"dpx:television.field_number","%.20g",
 905           (double) dpx.television.field_number);
 906       dpx.television.video_signal=(unsigned char) ReadBlobByte(image);
 907       offset++;
 908       if (dpx.television.video_signal != 0)
 909         (void) FormatImageProperty(image,"dpx:television.video_signal","%.20g",
 910           (double) dpx.television.video_signal);
 911       dpx.television.padding=(unsigned char) ReadBlobByte(image);
 912       offset++;
 913       if (dpx.television.padding != 0)
 914         (void) FormatImageProperty(image,"dpx:television.padding","%d",
 915           dpx.television.padding);
 916       dpx.television.horizontal_sample_rate=ReadBlobFloat(image);
 917       offset+=4;
 918       if (IsFloatDefined(dpx.television.horizontal_sample_rate) != MagickFalse)
 919         (void) FormatImageProperty(image,
 920           "dpx:television.horizontal_sample_rate","%g",
 921           dpx.television.horizontal_sample_rate);
 922       dpx.television.vertical_sample_rate=ReadBlobFloat(image);
 923       offset+=4;
 924       if (IsFloatDefined(dpx.television.vertical_sample_rate) != MagickFalse)
 925         (void) FormatImageProperty(image,"dpx:television.vertical_sample_rate",
 926           "%g",dpx.television.vertical_sample_rate);
 927       dpx.television.frame_rate=ReadBlobFloat(image);
 928       offset+=4;
 929       if (IsFloatDefined(dpx.television.frame_rate) != MagickFalse)
 930         (void) FormatImageProperty(image,"dpx:television.frame_rate","%g",
 931           dpx.television.frame_rate);
 932       dpx.television.time_offset=ReadBlobFloat(image);
 933       offset+=4;
 934       if (IsFloatDefined(dpx.television.time_offset) != MagickFalse)
 935         (void) FormatImageProperty(image,"dpx:television.time_offset","%g",
 936           dpx.television.time_offset);
 937       dpx.television.gamma=ReadBlobFloat(image);
 938       offset+=4;
 939       if (IsFloatDefined(dpx.television.gamma) != MagickFalse)
 940         (void) FormatImageProperty(image,"dpx:television.gamma","%g",
 941           dpx.television.gamma);
 942       dpx.television.black_level=ReadBlobFloat(image);
 943       offset+=4;
 944       if (IsFloatDefined(dpx.television.black_level) != MagickFalse)
 945         (void) FormatImageProperty(image,"dpx:television.black_level","%g",
 946           dpx.television.black_level);
 947       dpx.television.black_gain=ReadBlobFloat(image);
 948       offset+=4;
 949       if (IsFloatDefined(dpx.television.black_gain) != MagickFalse)
 950         (void) FormatImageProperty(image,"dpx:television.black_gain","%g",
 951           dpx.television.black_gain);
 952       dpx.television.break_point=ReadBlobFloat(image);
 953       offset+=4;
 954       if (IsFloatDefined(dpx.television.break_point) != MagickFalse)
 955         (void) FormatImageProperty(image,"dpx:television.break_point","%g",
 956           dpx.television.break_point);
 957       dpx.television.white_level=ReadBlobFloat(image);
 958       offset+=4;
 959       if (IsFloatDefined(dpx.television.white_level) != MagickFalse)
 960         (void) FormatImageProperty(image,"dpx:television.white_level","%g",
 961           dpx.television.white_level);
 962       dpx.television.integration_times=ReadBlobFloat(image);
 963       offset+=4;
 964       if (IsFloatDefined(dpx.television.integration_times) != MagickFalse)
 965         (void) FormatImageProperty(image,"dpx:television.integration_times",
 966           "%g",dpx.television.integration_times);
 967       offset+=ReadBlob(image,sizeof(dpx.television.reserve),(unsigned char *)
 968         dpx.television.reserve);
 969     }
 970   if (dpx.file.image_offset > 2080U)
 971     {
 972       /*
 973         Read DPX user header.
 974       */
 975       offset+=ReadBlob(image,sizeof(dpx.user.id),(unsigned char *) dpx.user.id);
 976       if (*dpx.user.id != '\0')
 977         (void) FormatImageProperty(image,"dpx:user.id","%.32s",dpx.user.id);
 978       if ((dpx.file.user_size != ~0U) &&
 979           ((size_t) dpx.file.user_size > sizeof(dpx.user.id)))
 980         {
 981           StringInfo
 982             *profile;
 983
 984            profile=AcquireStringInfo(dpx.file.user_size-sizeof(dpx.user.id));
 985            offset+=ReadBlob(image,GetStringInfoLength(profile),
 986              GetStringInfoDatum(profile));
 987            (void) SetImageProfile(image,"dpx",profile);
 988            profile=DestroyStringInfo(profile);
 989         }
 990     }
 991   for ( ; offset < (MagickOffsetType) dpx.file.image_offset; offset++)
 992     (void) ReadBlobByte(image);
 993   /*
 994     Read DPX image header.
 995   */
 996   if (image_info->ping != MagickFalse)
 997     {
 998       (void) CloseBlob(image);
 999       return(GetFirstImageInList(image));
1000     }
1001   /*
1002     Convert DPX raster image to pixel packets.
1003   */
1004   samples_per_pixel=1;
1005   quantum_type=GrayQuantum;
1006   switch (component_type)
1007   {
1008     case CbYCrY422ComponentType:
1009     {
1010       samples_per_pixel=2;
1011       quantum_type=CbYCrYQuantum;
1012       break;
1013     }
1014     case CbYACrYA4224ComponentType:
1015     case CbYCr444ComponentType:
1016     {
1017       samples_per_pixel=3;
1018       quantum_type=CbYCrQuantum;
1019       break;
1020     }
1021     case RGBComponentType:
1022     {
1023       samples_per_pixel=3;
1024       quantum_type=RGBQuantum;
1025       break;
1026     }
1027     case ABGRComponentType:
1028     case RGBAComponentType:
1029     {
1030       image->matte=MagickTrue;
1031       samples_per_pixel=4;
1032       quantum_type=RGBAQuantum;
1033       break;
1034     }
1035     default:
1036       break;
1037   }
1038   switch (component_type)
1039   {
1040     case CbYCrY422ComponentType:
1041     case CbYACrYA4224ComponentType:
1042     case CbYCr444ComponentType:
1043     {
1044       image->colorspace=Rec709YCbCrColorspace;
1045       break;
1046     }
1047     case LumaComponentType:
1048     {
1049       image->colorspace=RGBColorspace;
1050       break;
1051     }
1052     default:
1053     {
1054       image->colorspace=RGBColorspace;
1055       if (dpx.image.image_element[0].transfer == LogarithmicColorimetric)
1056         image->colorspace=LogColorspace;
1057       if (dpx.image.image_element[0].transfer == PrintingDensityColorimetric)
1058         image->colorspace=LogColorspace;
1059       break;
1060     }
1061   }
1062   extent=GetBytesPerRow(image->columns,samples_per_pixel,image->depth,
1063     dpx.image.image_element[0].packing == 0 ? MagickFalse : MagickTrue);
1064   /*
1065     DPX any-bit pixel format.
1066   */
1067   status=MagickTrue;
1068   row=0;
1069   quantum_info=AcquireQuantumInfo(image_info,image);
1070   if (quantum_info == (QuantumInfo *) NULL)
1071     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
1072   SetQuantumQuantum(quantum_info,32);
1073   SetQuantumPack(quantum_info,dpx.image.image_element[0].packing == 0 ?
1074     MagickTrue : MagickFalse);
1075   for (y=0; y < (ssize_t) image->rows; y++)
1076   {
1077     MagickBooleanType
1078       sync;
1079
1080     register PixelPacket
1081       *q;
1082
1083     size_t
1084       length;
1085
1086     ssize_t
1087       count,
1088       offset;
1089
1090     unsigned char
1091       *pixels;
1092
1093     if (status == MagickFalse)
1094       continue;
1095     pixels=GetQuantumPixels(quantum_info);
1096     {
1097       count=ReadBlob(image,extent,pixels);
1098       if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
1099           (image->previous == (Image *) NULL))
1100         {
1101           MagickBooleanType
1102             proceed;
1103
1104           proceed=SetImageProgress(image,LoadImageTag,(MagickOffsetType) row,
1105             image->rows);
1106           if (proceed == MagickFalse)
1107             status=MagickFalse;
1108         }
1109       offset=row++;
1110     }
1111     if (count != (ssize_t) extent)
1112       status=MagickFalse;
1113     q=QueueAuthenticPixels(image,0,offset,image->columns,1,exception);
1114     if (q == (PixelPacket *) NULL)
1115       {
1116         status=MagickFalse;
1117         continue;
1118       }
1119     length=ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
1120       quantum_type,pixels,exception);
1121     (void) length;
1122     sync=SyncAuthenticPixels(image,exception);
1123     if (sync == MagickFalse)
1124       status=MagickFalse;
1125   }
1126   quantum_info=DestroyQuantumInfo(quantum_info);
1127   if (status == MagickFalse)
1128     ThrowReaderException(CorruptImageError,"UnableToReadImageData");
1129   SetQuantumImageType(image,quantum_type);
1130   if (EOFBlob(image) != MagickFalse)
1131     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
1132       image->filename);
1133   (void) CloseBlob(image);
1134   return(GetFirstImageInList(image));
1135 }
1136 \f
1137 /*
1138 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1139 %                                                                             %
1140 %                                                                             %
1141 %                                                                             %
1142 %   R e g i s t e r D P X I m a g e                                           %
1143 %                                                                             %
1144 %                                                                             %
1145 %                                                                             %
1146 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1147 %
1148 %  RegisterDPXImage() adds properties for the DPX image format to
1149 %  the list of supported formats.  The properties include the image format
1150 %  tag, a method to read and/or write the format, whether the format
1151 %  supports the saving of more than one frame to the same file or blob,
1152 %  whether the format supports native in-memory I/O, and a brief
1153 %  description of the format.
1154 %
1155 %  The format of the RegisterDPXImage method is:
1156 %
1157 %      size_t RegisterDPXImage(void)
1158 %
1159 */
1160 ModuleExport size_t RegisterDPXImage(void)
1161 {
1162   MagickInfo
1163     *entry;
1164
1165   static const char
1166     *DPXNote =
1167     {
1168       "Digital Moving Picture Exchange Bitmap, Version 2.0.\n"
1169       "See SMPTE 268M-2003 specification at http://www.smtpe.org\n"
1170     };
1171
1172   entry=SetMagickInfo("DPX");
1173   entry->decoder=(DecodeImageHandler *) ReadDPXImage;
1174   entry->encoder=(EncodeImageHandler *) WriteDPXImage;
1175   entry->magick=(IsImageFormatHandler *) IsDPX;
1176   entry->adjoin=MagickFalse;
1177   entry->description=ConstantString("SMPTE 268M-2003 (DPX 2.0)");
1178   entry->note=ConstantString(DPXNote);
1179   entry->module=ConstantString("DPX");
1180   (void) RegisterMagickInfo(entry);
1181   return(MagickImageCoderSignature);
1182 }
1183 \f
1184 /*
1185 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1186 %                                                                             %
1187 %                                                                             %
1188 %                                                                             %
1189 %   U n r e g i s t e r D P X I m a g e                                       %
1190 %                                                                             %
1191 %                                                                             %
1192 %                                                                             %
1193 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1194 %
1195 %  UnregisterDPXImage() removes format registrations made by the
1196 %  DPX module from the list of supported formats.
1197 %
1198 %  The format of the UnregisterDPXImage method is:
1199 %
1200 %      UnregisterDPXImage(void)
1201 %
1202 */
1203 ModuleExport void UnregisterDPXImage(void)
1204 {
1205   (void) UnregisterMagickInfo("DPX");
1206 }
1207 \f
1208 /*
1209 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1210 %                                                                             %
1211 %                                                                             %
1212 %                                                                             %
1213 %   W r i t e D P X I m a g e                                                 %
1214 %                                                                             %
1215 %                                                                             %
1216 %                                                                             %
1217 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1218 %
1219 %  WriteDPXImage() writes an image in DPX encoded image format.
1220 %
1221 %  The format of the WriteDPXImage method is:
1222 %
1223 %      MagickBooleanType WriteDPXImage(const ImageInfo *image_info,Image *image)
1224 %
1225 %  A description of each parameter follows.
1226 %
1227 %    o image_info: the image info.
1228 %
1229 %    o image:  The image.
1230 %
1231 */
1232
1233 static inline const char *GetDPXProperty(const ImageInfo *image_info,
1234   const Image *image,const char *property)
1235 {
1236   const char
1237     *value;
1238
1239   value=GetImageOption(image_info,property);
1240   if (value != (const char *) NULL)
1241     return(value);
1242   return(GetImageProperty(image,property));
1243 }
1244
1245 static unsigned int StringToTimeCode(const char *key)
1246 {
1247   char
1248     buffer[2];
1249
1250   register ssize_t
1251     i;
1252
1253   unsigned int
1254     shift,
1255     value;
1256
1257   value=0;
1258   shift=28;
1259   buffer[1]='\0';
1260   for (i=0; (*key != 0) && (i < 11); i++)
1261   {
1262     if (isxdigit((int) ((unsigned char) *key)) == 0)
1263       {
1264         key++;
1265         continue;
1266       }
1267     buffer[0]=(*key++);
1268     value|=(unsigned int) ((strtol(buffer,(char **) NULL,16)) << shift);
1269     shift-=4;
1270   }
1271   return(value);
1272 }
1273
1274 static MagickBooleanType WriteDPXImage(const ImageInfo *image_info,Image *image)
1275 {
1276   const char
1277     *value;
1278
1279   const StringInfo
1280     *profile;
1281
1282   DPXInfo
1283     dpx;
1284
1285   MagickBooleanType
1286     status;
1287
1288   MagickOffsetType
1289     offset;
1290
1291   MagickStatusType
1292     flags;
1293
1294   GeometryInfo
1295     geometry_info;
1296
1297   QuantumInfo
1298     *quantum_info;
1299
1300   QuantumType
1301     quantum_type;
1302
1303   register const PixelPacket
1304     *p;
1305
1306   register ssize_t
1307     i;
1308
1309   ssize_t
1310     count,
1311     horizontal_factor,
1312     vertical_factor,
1313     y;
1314
1315   size_t
1316     extent;
1317
1318   time_t
1319     seconds;
1320
1321   unsigned char
1322     *pixels;
1323
1324   /*
1325     Open output image file.
1326   */
1327   assert(image_info != (const ImageInfo *) NULL);
1328   assert(image_info->signature == MagickSignature);
1329   assert(image != (Image *) NULL);
1330   assert(image->signature == MagickSignature);
1331   if (image->debug != MagickFalse)
1332     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1333   horizontal_factor=4;
1334   vertical_factor=4;
1335   if (image_info->sampling_factor != (char *) NULL)
1336     {
1337       GeometryInfo
1338         geometry_info;
1339
1340       MagickStatusType
1341         flags;
1342
1343       flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
1344       horizontal_factor=(ssize_t) geometry_info.rho;
1345       vertical_factor=(ssize_t) geometry_info.sigma;
1346       if ((flags & SigmaValue) == 0)
1347         vertical_factor=horizontal_factor;
1348       if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
1349           (horizontal_factor != 4) && (vertical_factor != 1) &&
1350           (vertical_factor != 2) && (vertical_factor != 4))
1351         ThrowWriterException(CorruptImageError,"UnexpectedSamplingFactor");
1352     }
1353   if ((image->colorspace == YCbCrColorspace) &&
1354       ((horizontal_factor == 2) || (vertical_factor == 2)))
1355     if ((image->columns % 2) != 0)
1356       image->columns++;
1357   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
1358   if (status == MagickFalse)
1359     return(status);
1360   /*
1361     Write file header.
1362   */
1363   (void) ResetMagickMemory(&dpx,0,sizeof(dpx));
1364   offset=0;
1365   dpx.file.magic=0x53445058U;
1366   offset+=WriteBlobLong(image,dpx.file.magic);
1367   dpx.file.image_offset=0x2000U;
1368   profile=GetImageProfile(image,"dpx");
1369   if (profile != (StringInfo *) NULL)
1370     {
1371       if (GetStringInfoLength(profile) > 1048576)
1372         ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
1373       dpx.file.image_offset+=(unsigned int) GetStringInfoLength(profile);
1374       dpx.file.image_offset=(((dpx.file.image_offset+0x2000-1)/0x2000)*0x2000);
1375     }
1376   offset+=WriteBlobLong(image,dpx.file.image_offset);
1377   (void) strncpy(dpx.file.version,"V2.0",sizeof(dpx.file.version));
1378   offset+=WriteBlob(image,8,(unsigned char *) &dpx.file.version);
1379   dpx.file.file_size=(unsigned int) (4U*image->columns*image->rows+
1380     dpx.file.image_offset);
1381   offset+=WriteBlobLong(image,dpx.file.file_size);
1382   dpx.file.ditto_key=1U;  /* new frame */
1383   offset+=WriteBlobLong(image,dpx.file.ditto_key);
1384   dpx.file.generic_size=0x00000680U;
1385   offset+=WriteBlobLong(image,dpx.file.generic_size);
1386   dpx.file.industry_size=0x00000180U;
1387   offset+=WriteBlobLong(image,dpx.file.industry_size);
1388   dpx.file.user_size=0;
1389   if (profile != (StringInfo *) NULL)
1390     {
1391       dpx.file.user_size+=(unsigned int) GetStringInfoLength(profile);
1392       dpx.file.user_size=(((dpx.file.user_size+0x2000-1)/0x2000)*0x2000);
1393     }
1394   offset+=WriteBlobLong(image,dpx.file.user_size);
1395   value=GetDPXProperty(image_info,image,"dpx:file.filename");
1396   if (value != (const char *) NULL)
1397     (void) strncpy(dpx.file.filename,value,sizeof(dpx.file.filename));
1398   offset+=WriteBlob(image,sizeof(dpx.file.filename),(unsigned char *)
1399     dpx.file.filename);
1400   seconds=time((time_t *) NULL);
1401   (void) FormatMagickTime(seconds,sizeof(dpx.file.timestamp),
1402     dpx.file.timestamp);
1403   offset+=WriteBlob(image,sizeof(dpx.file.timestamp),(unsigned char *)
1404     dpx.file.timestamp);
1405   (void) strncpy(dpx.file.creator,GetMagickVersion((size_t *) NULL),
1406     sizeof(dpx.file.creator));
1407   value=GetDPXProperty(image_info,image,"dpx:file.creator");
1408   if (value != (const char *) NULL)
1409     (void) strncpy(dpx.file.creator,value,sizeof(dpx.file.creator));
1410   offset+=WriteBlob(image,sizeof(dpx.file.creator),(unsigned char *)
1411     dpx.file.creator);
1412   value=GetDPXProperty(image_info,image,"dpx:file.project");
1413   if (value != (const char *) NULL)
1414     (void) strncpy(dpx.file.project,value,sizeof(dpx.file.project));
1415   offset+=WriteBlob(image,sizeof(dpx.file.project),(unsigned char *)
1416     dpx.file.project);
1417   value=GetDPXProperty(image_info,image,"dpx:file.copyright");
1418   if (value != (const char *) NULL)
1419     (void) strncpy(dpx.file.copyright,value,
1420       sizeof(dpx.file.copyright));
1421   offset+=WriteBlob(image,sizeof(dpx.file.copyright),(unsigned char *)
1422     dpx.file.copyright);
1423   dpx.file.encrypt_key=(~0U);
1424   offset+=WriteBlobLong(image,dpx.file.encrypt_key);
1425   offset+=WriteBlob(image,sizeof(dpx.file.reserve),(unsigned char *)
1426     dpx.file.reserve);
1427   /*
1428     Write image header.
1429   */
1430   dpx.image.orientation=0x00;  /* left-to-right; top-to-bottom */
1431   offset+=WriteBlobShort(image,dpx.image.orientation);
1432   dpx.image.number_elements=1;
1433   offset+=WriteBlobShort(image,dpx.image.number_elements);
1434   if ((image->columns != (unsigned int) image->columns) ||
1435       (image->rows != (unsigned int) image->rows))
1436     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
1437   offset+=WriteBlobLong(image,(unsigned int) image->columns);
1438   offset+=WriteBlobLong(image,(unsigned int) image->rows);
1439   for (i=0; i < 8; i++)
1440   {
1441     dpx.image.image_element[i].data_sign=0U;
1442     offset+=WriteBlobLong(image,dpx.image.image_element[i].data_sign);
1443     dpx.image.image_element[i].low_data=0U;
1444     offset+=WriteBlobLong(image,dpx.image.image_element[i].low_data);
1445     dpx.image.image_element[i].low_quantity=0.0f;
1446     offset+=WriteBlobFloat(image,dpx.image.image_element[i].low_quantity);
1447     dpx.image.image_element[i].high_data=0U;
1448     offset+=WriteBlobLong(image,dpx.image.image_element[i].high_data);
1449     dpx.image.image_element[i].high_quantity=0.0f;
1450     offset+=WriteBlobFloat(image,dpx.image.image_element[i].high_quantity);
1451     dpx.image.image_element[i].descriptor=0;
1452     if (i == 0)
1453       switch (image->colorspace)
1454       {
1455         case Rec601YCbCrColorspace:
1456         case Rec709YCbCrColorspace:
1457         case YCbCrColorspace:
1458         {
1459           dpx.image.image_element[i].descriptor=CbYCr444ComponentType;
1460           if (image->matte != MagickFalse)
1461             dpx.image.image_element[i].descriptor=CbYCrA4444ComponentType;
1462           break;
1463         }
1464         default:
1465         {
1466           dpx.image.image_element[i].descriptor=RGBComponentType;
1467           if (image->matte != MagickFalse)
1468             dpx.image.image_element[i].descriptor=RGBAComponentType;
1469           if ((image_info->type != TrueColorType) &&
1470               (image->matte == MagickFalse) &&
1471               (IsGrayImage(image,&image->exception) != MagickFalse))
1472             dpx.image.image_element[i].descriptor=LumaComponentType;
1473           break;
1474         }
1475       }
1476     offset+=WriteBlobByte(image,dpx.image.image_element[i].descriptor);
1477     dpx.image.image_element[i].transfer=0;
1478     if (image->colorspace == LogColorspace)
1479       dpx.image.image_element[0].transfer=PrintingDensityColorimetric;
1480     offset+=WriteBlobByte(image,dpx.image.image_element[i].transfer);
1481     dpx.image.image_element[i].colorimetric=0;
1482     offset+=WriteBlobByte(image,dpx.image.image_element[i].colorimetric);
1483     dpx.image.image_element[i].bit_size=0;
1484     if (i == 0)
1485       dpx.image.image_element[i].bit_size=(unsigned char) image->depth;
1486     offset+=WriteBlobByte(image,dpx.image.image_element[i].bit_size);
1487     dpx.image.image_element[i].packing=0;
1488     if ((image->depth == 10) || (image->depth == 12))
1489       dpx.image.image_element[i].packing=1;
1490     offset+=WriteBlobShort(image,dpx.image.image_element[i].packing);
1491     dpx.image.image_element[i].encoding=0;
1492     offset+=WriteBlobShort(image,dpx.image.image_element[i].encoding);
1493     dpx.image.image_element[i].data_offset=0U;
1494     if (i == 0)
1495       dpx.image.image_element[i].data_offset=dpx.file.image_offset;
1496     offset+=WriteBlobLong(image,dpx.image.image_element[i].data_offset);
1497     dpx.image.image_element[i].end_of_line_padding=0U;
1498     offset+=WriteBlobLong(image,dpx.image.image_element[i].end_of_line_padding);
1499     offset+=WriteBlobLong(image,
1500       dpx.image.image_element[i].end_of_image_padding);
1501     offset+=WriteBlob(image,sizeof(dpx.image.image_element[i].description),
1502       (unsigned char *) dpx.image.image_element[i].description);
1503   }
1504   offset+=WriteBlob(image,sizeof(dpx.image.reserve),(unsigned char *)
1505     dpx.image.reserve);
1506   /*
1507     Write orientation header.
1508   */
1509   if ((image->rows != image->magick_rows) ||
1510       (image->columns != image->magick_columns))
1511     {
1512       /*
1513         These properties are not valid if image size changed.
1514       */
1515       (void) DeleteImageProperty(image,"dpx:orientation.x_offset");
1516       (void) DeleteImageProperty(image,"dpx:orientation.y_offset");
1517       (void) DeleteImageProperty(image,"dpx:orientation.x_center");
1518       (void) DeleteImageProperty(image,"dpx:orientation.y_center");
1519       (void) DeleteImageProperty(image,"dpx:orientation.x_size");
1520       (void) DeleteImageProperty(image,"dpx:orientation.y_size");
1521     }
1522   dpx.orientation.x_offset=0U;
1523   value=GetDPXProperty(image_info,image,"dpx:orientation.x_offset");
1524   if (value != (const char *) NULL)
1525     dpx.orientation.x_offset=(unsigned int) StringToUnsignedLong(value);
1526   offset+=WriteBlobLong(image,dpx.orientation.x_offset);
1527   dpx.orientation.y_offset=0U;
1528   value=GetDPXProperty(image_info,image,"dpx:orientation.y_offset");
1529   if (value != (const char *) NULL)
1530     dpx.orientation.y_offset=(unsigned int) StringToUnsignedLong(value);
1531   offset+=WriteBlobLong(image,dpx.orientation.y_offset);
1532   dpx.orientation.x_center=0.0f;
1533   value=GetDPXProperty(image_info,image,"dpx:orientation.x_center");
1534   if (value != (const char *) NULL)
1535     dpx.orientation.x_center=StringToDouble(value);
1536   offset+=WriteBlobFloat(image,dpx.orientation.x_center);
1537   dpx.orientation.y_center=0.0f;
1538   value=GetDPXProperty(image_info,image,"dpx:orientation.y_center");
1539   if (value != (const char *) NULL)
1540     dpx.orientation.y_center=StringToDouble(value);
1541   offset+=WriteBlobFloat(image,dpx.orientation.y_center);
1542   dpx.orientation.x_size=0U;
1543   value=GetDPXProperty(image_info,image,"dpx:orientation.x_size");
1544   if (value != (const char *) NULL)
1545     dpx.orientation.x_size=(unsigned int) StringToUnsignedLong(value);
1546   offset+=WriteBlobLong(image,dpx.orientation.x_size);
1547   dpx.orientation.y_size=0U;
1548   value=GetDPXProperty(image_info,image,"dpx:orientation.y_size");
1549   if (value != (const char *) NULL)
1550     dpx.orientation.y_size=(unsigned int) StringToUnsignedLong(value);
1551   offset+=WriteBlobLong(image,dpx.orientation.y_size);
1552   value=GetDPXProperty(image_info,image,"dpx:orientation.filename");
1553   if (value != (const char *) NULL)
1554     (void) strncpy(dpx.orientation.filename,value,
1555       sizeof(dpx.orientation.filename));
1556   offset+=WriteBlob(image,sizeof(dpx.orientation.filename),(unsigned char *)
1557     dpx.orientation.filename);
1558   offset+=WriteBlob(image,sizeof(dpx.orientation.timestamp),(unsigned char *)
1559     dpx.orientation.timestamp);
1560   value=GetDPXProperty(image_info,image,"dpx:orientation.device");
1561   if (value != (const char *) NULL)
1562     (void) strncpy(dpx.orientation.device,value,sizeof(dpx.orientation.device));
1563   offset+=WriteBlob(image,sizeof(dpx.orientation.device),(unsigned char *)
1564     dpx.orientation.device);
1565   value=GetDPXProperty(image_info,image,"dpx:orientation.serial");
1566   if (value != (const char *) NULL)
1567     (void) strncpy(dpx.orientation.serial,value,sizeof(dpx.orientation.serial));
1568   offset+=WriteBlob(image,sizeof(dpx.orientation.serial),(unsigned char *)
1569     dpx.orientation.serial);
1570   for (i=0; i < 4; i++)
1571     dpx.orientation.border[i]=0;
1572   value=GetDPXProperty(image_info,image,"dpx:orientation.border");
1573   if (value != (const char *) NULL)
1574     {
1575       flags=ParseGeometry(value,&geometry_info);
1576       if ((flags & SigmaValue) == 0)
1577         geometry_info.sigma=geometry_info.rho;
1578       dpx.orientation.border[0]=(unsigned short) (geometry_info.rho+0.5);
1579       dpx.orientation.border[1]=(unsigned short) (geometry_info.sigma+0.5);
1580       dpx.orientation.border[2]=(unsigned short) (geometry_info.xi+0.5);
1581       dpx.orientation.border[3]=(unsigned short) (geometry_info.psi+0.5);
1582     }
1583   for (i=0; i < 4; i++)
1584     offset+=WriteBlobShort(image,dpx.orientation.border[i]);
1585   for (i=0; i < 2; i++)
1586     dpx.orientation.aspect_ratio[i]=0U;
1587   value=GetDPXProperty(image_info,image,"dpx:orientation.aspect_ratio");
1588   if (value != (const char *) NULL)
1589     {
1590       flags=ParseGeometry(value,&geometry_info);
1591       if ((flags & SigmaValue) == 0)
1592         geometry_info.sigma=geometry_info.rho;
1593       dpx.orientation.aspect_ratio[0]=(unsigned int) (geometry_info.rho+0.5);
1594       dpx.orientation.aspect_ratio[1]=(unsigned int) (geometry_info.sigma+0.5);
1595     }
1596   for (i=0; i < 2; i++)
1597     offset+=WriteBlobLong(image,dpx.orientation.aspect_ratio[i]);
1598   offset+=WriteBlob(image,sizeof(dpx.orientation.reserve),(unsigned char *)
1599     dpx.orientation.reserve);
1600   /*
1601     Write film header.
1602   */
1603   *dpx.film.id='\0';
1604   value=GetDPXProperty(image_info,image,"dpx:film.id");
1605   if (value != (const char *) NULL)
1606     (void) strncpy(dpx.film.id,value,sizeof(dpx.film.id));
1607   offset+=WriteBlob(image,sizeof(dpx.film.id),(unsigned char *) dpx.film.id);
1608   *dpx.film.type='\0';
1609   value=GetDPXProperty(image_info,image,"dpx:film.type");
1610   if (value != (const char *) NULL)
1611     (void) strncpy(dpx.film.type,value,sizeof(dpx.film.type));
1612   offset+=WriteBlob(image,sizeof(dpx.film.type),(unsigned char *)
1613     dpx.film.type);
1614   *dpx.film.offset='\0';
1615   value=GetDPXProperty(image_info,image,"dpx:film.offset");
1616   if (value != (const char *) NULL)
1617     (void) strncpy(dpx.film.offset,value,sizeof(dpx.film.offset));
1618   offset+=WriteBlob(image,sizeof(dpx.film.offset),(unsigned char *)
1619     dpx.film.offset);
1620   *dpx.film.prefix='\0';
1621   value=GetDPXProperty(image_info,image,"dpx:film.prefix");
1622   if (value != (const char *) NULL)
1623     (void) strncpy(dpx.film.prefix,value,sizeof(dpx.film.prefix));
1624   offset+=WriteBlob(image,sizeof(dpx.film.prefix),(unsigned char *)
1625     dpx.film.prefix);
1626   *dpx.film.count='\0';
1627   value=GetDPXProperty(image_info,image,"dpx:film.count");
1628   if (value != (const char *) NULL)
1629     (void) strncpy(dpx.film.count,value,sizeof(dpx.film.count));
1630   offset+=WriteBlob(image,sizeof(dpx.film.count),(unsigned char *)
1631     dpx.film.count);
1632   *dpx.film.format='\0';
1633   value=GetDPXProperty(image_info,image,"dpx:film.format");
1634   if (value != (const char *) NULL)
1635     (void) strncpy(dpx.film.format,value,sizeof(dpx.film.format));
1636   offset+=WriteBlob(image,sizeof(dpx.film.format),(unsigned char *)
1637     dpx.film.format);
1638   dpx.film.frame_position=0U;
1639   value=GetDPXProperty(image_info,image,"dpx:film.frame_position");
1640   if (value != (const char *) NULL)
1641     dpx.film.frame_position=(unsigned int) StringToUnsignedLong(value);
1642   offset+=WriteBlobLong(image,dpx.film.frame_position);
1643   dpx.film.sequence_extent=0U;
1644   value=GetDPXProperty(image_info,image,"dpx:film.sequence_extent");
1645   if (value != (const char *) NULL)
1646     dpx.film.sequence_extent=(unsigned int) StringToUnsignedLong(value);
1647   offset+=WriteBlobLong(image,dpx.film.sequence_extent);
1648   dpx.film.held_count=0U;
1649   value=GetDPXProperty(image_info,image,"dpx:film.held_count");
1650   if (value != (const char *) NULL)
1651     dpx.film.held_count=(unsigned int) StringToUnsignedLong(value);
1652   offset+=WriteBlobLong(image,dpx.film.held_count);
1653   dpx.film.frame_rate=0.0f;
1654   value=GetDPXProperty(image_info,image,"dpx:film.frame_rate");
1655   if (value != (const char *) NULL)
1656     dpx.film.frame_rate=StringToDouble(value);
1657   offset+=WriteBlobFloat(image,dpx.film.frame_rate);
1658   dpx.film.shutter_angle=0.0f;
1659   value=GetDPXProperty(image_info,image,"dpx:film.shutter_angle");
1660   if (value != (const char *) NULL)
1661     dpx.film.shutter_angle=StringToDouble(value);
1662   offset+=WriteBlobFloat(image,dpx.film.shutter_angle);
1663   *dpx.film.frame_id='\0';
1664   value=GetDPXProperty(image_info,image,"dpx:film.frame_id");
1665   if (value != (const char *) NULL)
1666     (void) strncpy(dpx.film.frame_id,value,sizeof(dpx.film.frame_id));
1667   offset+=WriteBlob(image,sizeof(dpx.film.frame_id),(unsigned char *)
1668     dpx.film.frame_id);
1669   value=GetDPXProperty(image_info,image,"dpx:film.slate");
1670   if (value != (const char *) NULL)
1671     (void) strncpy(dpx.film.slate,value,sizeof(dpx.film.slate));
1672   offset+=WriteBlob(image,sizeof(dpx.film.slate),(unsigned char *)
1673     dpx.film.slate);
1674   offset+=WriteBlob(image,sizeof(dpx.film.reserve),(unsigned char *)
1675     dpx.film.reserve);
1676   /*
1677     Write television header.
1678   */
1679   value=GetDPXProperty(image_info,image,"dpx:television.time.code");
1680   if (value != (const char *) NULL)
1681     dpx.television.time_code=StringToTimeCode(value);
1682   offset+=WriteBlobLong(image,dpx.television.time_code);
1683   value=GetDPXProperty(image_info,image,"dpx:television.user.bits");
1684   if (value != (const char *) NULL)
1685     dpx.television.user_bits=StringToTimeCode(value);
1686   offset+=WriteBlobLong(image,dpx.television.user_bits);
1687   value=GetDPXProperty(image_info,image,"dpx:television.interlace");
1688   if (value != (const char *) NULL)
1689     dpx.television.interlace=(unsigned char) StringToLong(value);
1690   offset+=WriteBlobByte(image,dpx.television.interlace);
1691   value=GetDPXProperty(image_info,image,"dpx:television.field_number");
1692   if (value != (const char *) NULL)
1693     dpx.television.field_number=(unsigned char) StringToLong(value);
1694   offset+=WriteBlobByte(image,dpx.television.field_number);
1695   dpx.television.video_signal=0;
1696   value=GetDPXProperty(image_info,image,"dpx:television.video_signal");
1697   if (value != (const char *) NULL)
1698     dpx.television.video_signal=(unsigned char) StringToLong(value);
1699   offset+=WriteBlobByte(image,dpx.television.video_signal);
1700   dpx.television.padding=0;
1701   value=GetDPXProperty(image_info,image,"dpx:television.padding");
1702   if (value != (const char *) NULL)
1703     dpx.television.padding=(unsigned char) StringToLong(value);
1704   offset+=WriteBlobByte(image,dpx.television.padding);
1705   dpx.television.horizontal_sample_rate=0.0f;
1706   value=GetDPXProperty(image_info,image,
1707     "dpx:television.horizontal_sample_rate");
1708   if (value != (const char *) NULL)
1709     dpx.television.horizontal_sample_rate=StringToDouble(value);
1710   offset+=WriteBlobFloat(image,dpx.television.horizontal_sample_rate);
1711   dpx.television.vertical_sample_rate=0.0f;
1712   value=GetDPXProperty(image_info,image,"dpx:television.vertical_sample_rate");
1713   if (value != (const char *) NULL)
1714     dpx.television.vertical_sample_rate=StringToDouble(value);
1715   offset+=WriteBlobFloat(image,dpx.television.vertical_sample_rate);
1716   dpx.television.frame_rate=0.0f;
1717   value=GetDPXProperty(image_info,image,"dpx:television.frame_rate");
1718   if (value != (const char *) NULL)
1719     dpx.television.frame_rate=StringToDouble(value);
1720   offset+=WriteBlobFloat(image,dpx.television.frame_rate);
1721   dpx.television.time_offset=0.0f;
1722   value=GetDPXProperty(image_info,image,"dpx:television.time_offset");
1723   if (value != (const char *) NULL)
1724     dpx.television.time_offset=StringToDouble(value);
1725   offset+=WriteBlobFloat(image,dpx.television.time_offset);
1726   dpx.television.gamma=0.0f;
1727   value=GetDPXProperty(image_info,image,"dpx:television.gamma");
1728   if (value != (const char *) NULL)
1729     dpx.television.gamma=StringToDouble(value);
1730   offset+=WriteBlobFloat(image,dpx.television.gamma);
1731   dpx.television.black_level=0.0f;
1732   value=GetDPXProperty(image_info,image,"dpx:television.black_level");
1733   if (value != (const char *) NULL)
1734     dpx.television.black_level=StringToDouble(value);
1735   offset+=WriteBlobFloat(image,dpx.television.black_level);
1736   dpx.television.black_gain=0.0f;
1737   value=GetDPXProperty(image_info,image,"dpx:television.black_gain");
1738   if (value != (const char *) NULL)
1739     dpx.television.black_gain=StringToDouble(value);
1740   offset+=WriteBlobFloat(image,dpx.television.black_gain);
1741   dpx.television.break_point=0.0f;
1742   value=GetDPXProperty(image_info,image,"dpx:television.break_point");
1743   if (value != (const char *) NULL)
1744     dpx.television.break_point=StringToDouble(value);
1745   offset+=WriteBlobFloat(image,dpx.television.break_point);
1746   dpx.television.white_level=0.0f;
1747   value=GetDPXProperty(image_info,image,"dpx:television.white_level");
1748   if (value != (const char *) NULL)
1749     dpx.television.white_level=StringToDouble(value);
1750   offset+=WriteBlobFloat(image,dpx.television.white_level);
1751   dpx.television.integration_times=0.0f;
1752   value=GetDPXProperty(image_info,image,"dpx:television.integration_times");
1753   if (value != (const char *) NULL)
1754     dpx.television.integration_times=StringToDouble(value);
1755   offset+=WriteBlobFloat(image,dpx.television.integration_times);
1756   offset+=WriteBlob(image,sizeof(dpx.television.reserve),(unsigned char *)
1757     dpx.television.reserve);
1758   /*
1759     Write user header.
1760   */
1761   value=GetDPXProperty(image_info,image,"dpx:user.id");
1762   if (value != (const char *) NULL)
1763     (void) strncpy(dpx.user.id,value,sizeof(dpx.user.id));
1764   offset+=WriteBlob(image,sizeof(dpx.user.id),(unsigned char *) dpx.user.id);
1765   if (profile != (StringInfo *) NULL)
1766     offset+=WriteBlob(image,GetStringInfoLength(profile),
1767       GetStringInfoDatum(profile));
1768   while (offset < (MagickOffsetType) dpx.image.image_element[0].data_offset)
1769   {
1770     count=WriteBlobByte(image,0x00);
1771     if (count != 1)
1772       {
1773         ThrowFileException(&image->exception,FileOpenError,"UnableToWriteFile",
1774           image->filename);
1775         break;
1776       }
1777     offset+=count;
1778   }
1779   /*
1780     Convert pixel packets to DPX raster image.
1781   */
1782   quantum_info=AcquireQuantumInfo(image_info,image);
1783   SetQuantumQuantum(quantum_info,32);
1784   SetQuantumPack(quantum_info,dpx.image.image_element[0].packing == 0 ?
1785     MagickTrue : MagickFalse);
1786   quantum_type=RGBQuantum;
1787   if (image->matte != MagickFalse)
1788     quantum_type=RGBAQuantum;
1789   if (image->colorspace == YCbCrColorspace)
1790     {
1791       quantum_type=CbYCrQuantum;
1792       if (image->matte != MagickFalse)
1793         quantum_type=CbYCrAQuantum;
1794       if ((horizontal_factor == 2) || (vertical_factor == 2))
1795         quantum_type=CbYCrYQuantum;
1796     }
1797   extent=GetBytesPerRow(image->columns,image->matte != MagickFalse ? 4UL : 3UL,
1798     image->depth,MagickTrue);
1799   if ((image_info->type != UndefinedType) &&
1800       (image_info->type != TrueColorType) && (image->matte == MagickFalse) &&
1801       (IsGrayImage(image,&image->exception) != MagickFalse))
1802     {
1803       quantum_type=GrayQuantum;
1804       extent=GetBytesPerRow(image->columns,1UL,image->depth,MagickTrue);
1805     }
1806   pixels=GetQuantumPixels(quantum_info);
1807   for (y=0; y < (ssize_t) image->rows; y++)
1808   {
1809     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
1810     if (p == (const PixelPacket *) NULL)
1811       break;
1812     (void) ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info,
1813       quantum_type,pixels,&image->exception);
1814     count=WriteBlob(image,extent,pixels);
1815     if (count != (ssize_t) extent)
1816       break;
1817     status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
1818       image->rows);
1819     if (status == MagickFalse)
1820       break;
1821   }
1822   quantum_info=DestroyQuantumInfo(quantum_info);
1823   (void) CloseBlob(image);
1824   return(status);
1825 }