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(unsigned long columns,
 374   unsigned long samples_per_pixel,unsigned long 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     float
 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 unsigned long timestamp,char *code)
 517 {
 518 #define TimeFields  7
 519
 520   unsigned int
 521     shift;
 522
 523   register long
 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   long
 553     row,
 554     y;
 555
 556   MagickBooleanType
 557     status;
 558
 559   MagickOffsetType
 560     offset;
 561
 562   QuantumInfo
 563     *quantum_info;
 564
 565   QuantumType
 566     quantum_type;
 567
 568   register long
 569     i;
 570
 571   ssize_t
 572     count;
 573
 574   size_t
 575     extent;
 576
 577   unsigned char
 578     component_type;
 579
 580   unsigned long
 581     samples_per_pixel;
 582
 583   /*
 584     Open image file.
 585   */
 586   assert(image_info != (const ImageInfo *) NULL);
 587   assert(image_info->signature == MagickSignature);
 588   if (image_info->debug != MagickFalse)
 589     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 590       image_info->filename);
 591   assert(exception != (ExceptionInfo *) NULL);
 592   assert(exception->signature == MagickSignature);
 593   image=AcquireImage(image_info);
 594   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 595   if (status == MagickFalse)
 596     {
 597       image=DestroyImageList(image);
 598       return((Image *) NULL);
 599     }
 600   /*
 601     Read DPX file header.
 602   */
 603   offset=0;
 604   count=ReadBlob(image,4,(unsigned char *) magick);
 605   offset+=count;
 606   if ((count != 4) || ((LocaleNCompare(magick,"SDPX",4) != 0) &&
 607       (LocaleNCompare((char *) magick,"XPDS",4) != 0)))
 608     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 609   image->endian=LSBEndian;
 610   if (LocaleNCompare(magick,"SDPX",4) == 0)
 611     image->endian=MSBEndian;
 612   (void) ResetMagickMemory(&dpx,0,sizeof(dpx));
 613   dpx.file.image_offset=ReadBlobLong(image);
 614   offset+=4;
 615   offset+=ReadBlob(image,sizeof(dpx.file.version),(unsigned char *)
 616     dpx.file.version);
 617   (void) FormatImageProperty(image,"dpx:file.version","%.8s",dpx.file.version);
 618   dpx.file.file_size=ReadBlobLong(image);
 619   offset+=4;
 620   dpx.file.ditto_key=ReadBlobLong(image);
 621   offset+=4;
 622   if (dpx.file.ditto_key != ~0U)
 623     (void) FormatImageProperty(image,"dpx:file.ditto.key","%u",
 624       dpx.file.ditto_key);
 625   dpx.file.generic_size=ReadBlobLong(image);
 626   offset+=4;
 627   dpx.file.industry_size=ReadBlobLong(image);
 628   offset+=4;
 629   dpx.file.user_size=ReadBlobLong(image);
 630   offset+=4;
 631   offset+=ReadBlob(image,sizeof(dpx.file.filename),(unsigned char *)
 632     dpx.file.filename);
 633   (void) FormatImageProperty(image,"dpx:file.filename","%.100s",
 634     dpx.file.filename);
 635   (void) FormatImageProperty(image,"document","%.100s",dpx.file.filename);
 636   offset+=ReadBlob(image,sizeof(dpx.file.timestamp),(unsigned char *)
 637     dpx.file.timestamp);
 638   if (*dpx.file.timestamp != '\0')
 639     (void) FormatImageProperty(image,"dpx:file.timestamp","%.24s",
 640       dpx.file.timestamp);
 641   offset+=ReadBlob(image,sizeof(dpx.file.creator),(unsigned char *)
 642     dpx.file.creator);
 643   if (*dpx.file.creator != '\0')
 644     {
 645       (void) FormatImageProperty(image,"dpx:file.creator","%.100s",
 646         dpx.file.creator);
 647       (void) FormatImageProperty(image,"software","%.100s",dpx.file.creator);
 648     }
 649   offset+=ReadBlob(image,sizeof(dpx.file.project),(unsigned char *)
 650     dpx.file.project);
 651   if (*dpx.file.project != '\0')
 652     {
 653       (void) FormatImageProperty(image,"dpx:file.project","%.200s",
 654         dpx.file.project);
 655       (void) FormatImageProperty(image,"comment","%.100s",dpx.file.project);
 656     }
 657   offset+=ReadBlob(image,sizeof(dpx.file.copyright),(unsigned char *)
 658     dpx.file.copyright);
 659   if (*dpx.file.copyright != '\0')
 660     {
 661       (void) FormatImageProperty(image,"dpx:file.copyright","%.200s",
 662         dpx.file.copyright);
 663       (void) FormatImageProperty(image,"copyright","%.100s",
 664         dpx.file.copyright);
 665     }
 666   dpx.file.encrypt_key=ReadBlobLong(image);
 667   offset+=4;
 668   if (dpx.file.encrypt_key != ~0U)
 669     (void) FormatImageProperty(image,"dpx:file.encrypt_key","%u",
 670       dpx.file.encrypt_key);
 671   offset+=ReadBlob(image,sizeof(dpx.file.reserve),(unsigned char *)
 672     dpx.file.reserve);
 673   /*
 674     Read DPX image header.
 675   */
 676   dpx.image.orientation=ReadBlobShort(image);
 677   offset+=2;
 678   if (dpx.image.orientation != (unsigned short) (~0U))
 679     (void) FormatImageProperty(image,"dpx:image.orientation","%d",
 680       dpx.image.orientation);
 681   switch (dpx.image.orientation)
 682   {
 683     default:
 684     case 0:  image->orientation=TopLeftOrientation; break;
 685     case 1:  image->orientation=TopRightOrientation; break;
 686     case 2:  image->orientation=BottomLeftOrientation; break;
 687     case 3:  image->orientation=BottomRightOrientation; break;
 688     case 4:  image->orientation=LeftTopOrientation; break;
 689     case 5:  image->orientation=RightTopOrientation; break;
 690     case 6:  image->orientation=LeftBottomOrientation; break;
 691     case 7:  image->orientation=RightBottomOrientation; break;
 692   }
 693   dpx.image.number_elements=ReadBlobShort(image);
 694   offset+=2;
 695   dpx.image.pixels_per_line=ReadBlobLong(image);
 696   offset+=4;
 697   image->columns=dpx.image.pixels_per_line;
 698   dpx.image.lines_per_element=ReadBlobLong(image);
 699   offset+=4;
 700   image->rows=dpx.image.lines_per_element;
 701   for (i=0; i < 8; i++)
 702   {
 703     dpx.image.image_element[i].data_sign=ReadBlobLong(image);
 704     offset+=4;
 705     dpx.image.image_element[i].low_data=ReadBlobLong(image);
 706     offset+=4;
 707     dpx.image.image_element[i].low_quantity=ReadBlobFloat(image);
 708     offset+=4;
 709     dpx.image.image_element[i].high_data=ReadBlobLong(image);
 710     offset+=4;
 711     dpx.image.image_element[i].high_quantity=ReadBlobFloat(image);
 712     offset+=4;
 713     dpx.image.image_element[i].descriptor=(unsigned char) ReadBlobByte(image);
 714     offset++;
 715     dpx.image.image_element[i].transfer=(unsigned char) ReadBlobByte(image);
 716     offset++;
 717     dpx.image.image_element[i].colorimetric=(unsigned char) ReadBlobByte(image);
 718     offset++;
 719     dpx.image.image_element[i].bit_size=(unsigned char) ReadBlobByte(image);
 720     offset++;
 721     dpx.image.image_element[i].packing=ReadBlobShort(image);
 722     offset+=2;
 723     dpx.image.image_element[i].encoding=ReadBlobShort(image);
 724     offset+=2;
 725     dpx.image.image_element[i].data_offset=ReadBlobLong(image);
 726     offset+=4;
 727     dpx.image.image_element[i].end_of_line_padding=ReadBlobLong(image);
 728     offset+=4;
 729     dpx.image.image_element[i].end_of_image_padding=ReadBlobLong(image);
 730     offset+=4;
 731     offset+=ReadBlob(image,sizeof(dpx.image.image_element[i].description),
 732       (unsigned char *) dpx.image.image_element[i].description);
 733   }
 734   SetPrimaryChromaticity((DPXColorimetric)
 735     dpx.image.image_element[0].colorimetric,&image->chromaticity);
 736   offset+=ReadBlob(image,sizeof(dpx.image.reserve),(unsigned char *)
 737     dpx.image.reserve);
 738   component_type=dpx.image.image_element[0].descriptor;
 739   image->depth=dpx.image.image_element[0].bit_size;
 740   if (dpx.file.image_offset >= 1664U)
 741     {
 742       /*
 743         Read DPX orientation header.
 744       */
 745       dpx.orientation.x_offset=ReadBlobLong(image);
 746       offset+=4;
 747       if (dpx.orientation.x_offset != ~0U)
 748         (void) FormatImageProperty(image,"dpx:orientation.x_offset","%u",
 749           dpx.orientation.x_offset);
 750       dpx.orientation.y_offset=ReadBlobLong(image);
 751       offset+=4;
 752       if (dpx.orientation.y_offset != ~0U)
 753         (void) FormatImageProperty(image,"dpx:orientation.y_offset","%u",
 754           dpx.orientation.y_offset);
 755       dpx.orientation.x_center=ReadBlobFloat(image);
 756       offset+=4;
 757       if (IsFloatDefined(dpx.orientation.x_center) != MagickFalse)
 758         (void) FormatImageProperty(image,"dpx:orientation.x_center","%g",
 759           dpx.orientation.x_center);
 760       dpx.orientation.y_center=ReadBlobFloat(image);
 761       offset+=4;
 762       if (IsFloatDefined(dpx.orientation.y_center) != MagickFalse)
 763         (void) FormatImageProperty(image,"dpx:orientation.y_center","%g",
 764           dpx.orientation.y_center);
 765       dpx.orientation.x_size=ReadBlobLong(image);
 766       offset+=4;
 767       if (dpx.orientation.x_size != ~0U)
 768         (void) FormatImageProperty(image,"dpx:orientation.x_size","%u",
 769           dpx.orientation.x_size);
 770       dpx.orientation.y_size=ReadBlobLong(image);
 771       offset+=4;
 772       if (dpx.orientation.y_size != ~0U)
 773         (void) FormatImageProperty(image,"dpx:orientation.y_size","%u",
 774           dpx.orientation.y_size);
 775       offset+=ReadBlob(image,sizeof(dpx.orientation.filename),(unsigned char *)
 776         dpx.orientation.filename);
 777       if (*dpx.orientation.filename != '\0')
 778         (void) FormatImageProperty(image,"dpx:orientation.filename","%.100s",
 779           dpx.orientation.filename);
 780       offset+=ReadBlob(image,sizeof(dpx.orientation.timestamp),(unsigned char *)
 781         dpx.orientation.timestamp);
 782       if (*dpx.orientation.timestamp != '\0')
 783         (void) FormatImageProperty(image,"dpx:orientation.timestamp","%.24s",
 784           dpx.orientation.timestamp);
 785       offset+=ReadBlob(image,sizeof(dpx.orientation.device),(unsigned char *)
 786         dpx.orientation.device);
 787       if (*dpx.orientation.device != '\0')
 788         (void) FormatImageProperty(image,"dpx:orientation.device","%.32s",
 789           dpx.orientation.device);
 790       offset+=ReadBlob(image,sizeof(dpx.orientation.serial),(unsigned char *)
 791         dpx.orientation.serial);
 792       if (*dpx.orientation.serial != '\0')
 793         (void) FormatImageProperty(image,"dpx:orientation.serial","%.32s",
 794           dpx.orientation.serial);
 795       for (i=0; i < 4; i++)
 796       {
 797         dpx.orientation.border[i]=ReadBlobShort(image);
 798         offset+=2;
 799       }
 800       if ((dpx.orientation.border[0] != (unsigned short) (~0U)) &&
 801           (dpx.orientation.border[1] != (unsigned short) (~0U)))
 802         (void) FormatImageProperty(image,"dpx:orientation.border","%dx%d%+d%+d",          dpx.orientation.border[0],dpx.orientation.border[1],
 803           dpx.orientation.border[2],dpx.orientation.border[3]);
 804       for (i=0; i < 2; i++)
 805       {
 806         dpx.orientation.aspect_ratio[i]=ReadBlobLong(image);
 807         offset+=4;
 808       }
 809       if ((dpx.orientation.aspect_ratio[0] != ~0U) &&
 810           (dpx.orientation.aspect_ratio[1] != ~0U))
 811         (void) FormatImageProperty(image,"dpx:orientation.aspect_ratio",
 812           "%ux%u",dpx.orientation.aspect_ratio[0],
 813           dpx.orientation.aspect_ratio[1]);
 814       offset+=ReadBlob(image,sizeof(dpx.orientation.reserve),(unsigned char *)
 815         dpx.orientation.reserve);
 816     }
 817   if (dpx.file.image_offset >= 1920U)
 818     {
 819       /*
 820         Read DPX film header.
 821       */
 822       offset+=ReadBlob(image,sizeof(dpx.film.id),(unsigned char *) dpx.film.id);
 823       if (*dpx.film.type != '\0')
 824         (void) FormatImageProperty(image,"dpx:film.id","%.2s",dpx.film.id);
 825       offset+=ReadBlob(image,sizeof(dpx.film.type),(unsigned char *)
 826         dpx.film.type);
 827       if (*dpx.film.type != '\0')
 828         (void) FormatImageProperty(image,"dpx:film.type","%.2s",dpx.film.type);
 829       offset+=ReadBlob(image,sizeof(dpx.film.offset),(unsigned char *)
 830         dpx.film.offset);
 831       if (*dpx.film.offset != '\0')
 832         (void) FormatImageProperty(image,"dpx:film.offset","%.2s",
 833           dpx.film.offset);
 834       offset+=ReadBlob(image,sizeof(dpx.film.prefix),(unsigned char *)
 835         dpx.film.prefix);
 836       if (*dpx.film.prefix != '\0')
 837         (void) FormatImageProperty(image,"dpx:film.prefix","%.6s",
 838           dpx.film.prefix);
 839       offset+=ReadBlob(image,sizeof(dpx.film.count),(unsigned char *)
 840         dpx.film.count);
 841       if (*dpx.film.count != '\0')
 842         (void) FormatImageProperty(image,"dpx:film.count","%.4s",
 843           dpx.film.count);
 844       offset+=ReadBlob(image,sizeof(dpx.film.format),(unsigned char *)
 845         dpx.film.format);
 846       if (*dpx.film.format != '\0')
 847         (void) FormatImageProperty(image,"dpx:film.format","%.4s",
 848           dpx.film.format);
 849       dpx.film.frame_position=ReadBlobLong(image);
 850       offset+=4;
 851       if (dpx.film.frame_position != ~0U)
 852         (void) FormatImageProperty(image,"dpx:film.frame_position","%u",
 853           dpx.film.frame_position);
 854       dpx.film.sequence_extent=ReadBlobLong(image);
 855       offset+=4;
 856       if (dpx.film.sequence_extent != ~0U)
 857         (void) FormatImageProperty(image,"dpx:film.sequence_extent","%u",
 858           dpx.film.sequence_extent);
 859       dpx.film.held_count=ReadBlobLong(image);
 860       offset+=4;
 861       if (dpx.film.held_count != ~0U)
 862         (void) FormatImageProperty(image,"dpx:film.held_count","%u",
 863           dpx.film.held_count);
 864       dpx.film.frame_rate=ReadBlobFloat(image);
 865       offset+=4;
 866       if (IsFloatDefined(dpx.film.frame_rate) != MagickFalse)
 867         (void) FormatImageProperty(image,"dpx:film.frame_rate","%g",
 868           dpx.film.frame_rate);
 869       dpx.film.shutter_angle=ReadBlobFloat(image);
 870       offset+=4;
 871       if (IsFloatDefined(dpx.film.shutter_angle) != MagickFalse)
 872         (void) FormatImageProperty(image,"dpx:film.shutter_angle","%g",
 873           dpx.film.shutter_angle);
 874       offset+=ReadBlob(image,sizeof(dpx.film.frame_id),(unsigned char *)
 875         dpx.film.frame_id);
 876       if (*dpx.film.frame_id != '\0')
 877         (void) FormatImageProperty(image,"dpx:film.frame_id","%.32s",
 878           dpx.film.frame_id);
 879       offset+=ReadBlob(image,sizeof(dpx.film.slate),(unsigned char *)
 880         dpx.film.slate);
 881       if (*dpx.film.slate != '\0')
 882         (void) FormatImageProperty(image,"dpx:film.slate","%.100s",
 883           dpx.film.slate);
 884       offset+=ReadBlob(image,sizeof(dpx.film.reserve),(unsigned char *)
 885         dpx.film.reserve);
 886     }
 887   if (dpx.file.image_offset >= 2048U)
 888     {
 889       /*
 890         Read DPX television header.
 891       */
 892       dpx.television.time_code=(unsigned int) ReadBlobLong(image);
 893       offset+=4;
 894       TimeCodeToString(dpx.television.time_code,value);
 895       (void) SetImageProperty(image,"dpx:television.time.code",value);
 896       dpx.television.user_bits=(unsigned int) ReadBlobLong(image);
 897       offset+=4;
 898       TimeCodeToString(dpx.television.user_bits,value);
 899       (void) SetImageProperty(image,"dpx:television.user.bits",value);
 900       dpx.television.interlace=(unsigned char) ReadBlobByte(image);
 901       offset++;
 902       if (dpx.television.interlace != 0)
 903         (void) FormatImageProperty(image,"dpx:television.interlace","%ld",(long)
 904           dpx.television.interlace);
 905       dpx.television.field_number=(unsigned char) ReadBlobByte(image);
 906       offset++;
 907       if (dpx.television.field_number != 0)
 908         (void) FormatImageProperty(image,"dpx:television.field_number","%ld",
 909           (long) dpx.television.field_number);
 910       dpx.television.video_signal=(unsigned char) ReadBlobByte(image);
 911       offset++;
 912       if (dpx.television.video_signal != 0)
 913         (void) FormatImageProperty(image,"dpx:television.video_signal","%ld",
 914           (long) dpx.television.video_signal);
 915       dpx.television.padding=(unsigned char) ReadBlobByte(image);
 916       offset++;
 917       if (dpx.television.padding != 0)
 918         (void) FormatImageProperty(image,"dpx:television.padding","%d",
 919           dpx.television.padding);
 920       dpx.television.horizontal_sample_rate=ReadBlobFloat(image);
 921       offset+=4;
 922       if (IsFloatDefined(dpx.television.horizontal_sample_rate) != MagickFalse)
 923         (void) FormatImageProperty(image,
 924           "dpx:television.horizontal_sample_rate","%g",
 925           dpx.television.horizontal_sample_rate);
 926       dpx.television.vertical_sample_rate=ReadBlobFloat(image);
 927       offset+=4;
 928       if (IsFloatDefined(dpx.television.vertical_sample_rate) != MagickFalse)
 929         (void) FormatImageProperty(image,"dpx:television.vertical_sample_rate",
 930           "%g",dpx.television.vertical_sample_rate);
 931       dpx.television.frame_rate=ReadBlobFloat(image);
 932       offset+=4;
 933       if (IsFloatDefined(dpx.television.frame_rate) != MagickFalse)
 934         (void) FormatImageProperty(image,"dpx:television.frame_rate","%g",
 935           dpx.television.frame_rate);
 936       dpx.television.time_offset=ReadBlobFloat(image);
 937       offset+=4;
 938       if (IsFloatDefined(dpx.television.time_offset) != MagickFalse)
 939         (void) FormatImageProperty(image,"dpx:television.time_offset","%g",
 940           dpx.television.time_offset);
 941       dpx.television.gamma=ReadBlobFloat(image);
 942       offset+=4;
 943       if (IsFloatDefined(dpx.television.gamma) != MagickFalse)
 944         (void) FormatImageProperty(image,"dpx:television.gamma","%g",
 945           dpx.television.gamma);
 946       dpx.television.black_level=ReadBlobFloat(image);
 947       offset+=4;
 948       if (IsFloatDefined(dpx.television.black_level) != MagickFalse)
 949         (void) FormatImageProperty(image,"dpx:television.black_level","%g",
 950           dpx.television.black_level);
 951       dpx.television.black_gain=ReadBlobFloat(image);
 952       offset+=4;
 953       if (IsFloatDefined(dpx.television.black_gain) != MagickFalse)
 954         (void) FormatImageProperty(image,"dpx:television.black_gain","%g",
 955           dpx.television.black_gain);
 956       dpx.television.break_point=ReadBlobFloat(image);
 957       offset+=4;
 958       if (IsFloatDefined(dpx.television.break_point) != MagickFalse)
 959         (void) FormatImageProperty(image,"dpx:television.break_point","%g",
 960           dpx.television.break_point);
 961       dpx.television.white_level=ReadBlobFloat(image);
 962       offset+=4;
 963       if (IsFloatDefined(dpx.television.white_level) != MagickFalse)
 964         (void) FormatImageProperty(image,"dpx:television.white_level","%g",
 965           dpx.television.white_level);
 966       dpx.television.integration_times=ReadBlobFloat(image);
 967       offset+=4;
 968       if (IsFloatDefined(dpx.television.integration_times) != MagickFalse)
 969         (void) FormatImageProperty(image,"dpx:television.integration_times",
 970           "%g",dpx.television.integration_times);
 971       offset+=ReadBlob(image,sizeof(dpx.television.reserve),(unsigned char *)
 972         dpx.television.reserve);
 973     }
 974   if (dpx.file.image_offset > 2080U)
 975     {
 976       /*
 977         Read DPX user header.
 978       */
 979       offset+=ReadBlob(image,sizeof(dpx.user.id),(unsigned char *) dpx.user.id);
 980       if (*dpx.user.id != '\0')
 981         (void) FormatImageProperty(image,"dpx:user.id","%.32s",dpx.user.id);
 982       if ((dpx.file.user_size != ~0U) &&
 983           ((size_t) dpx.file.user_size > sizeof(dpx.user.id)))
 984         {
 985           StringInfo
 986             *profile;
 987
 988            profile=AcquireStringInfo(dpx.file.user_size);
 989            offset+=ReadBlob(image,GetStringInfoLength(profile),
 990              GetStringInfoDatum(profile));
 991            (void) SetImageProfile(image,"dpx",profile);
 992            profile=DestroyStringInfo(profile);
 993         }
 994     }
 995   for ( ; offset < (long) dpx.file.image_offset; offset++)
 996     (void) ReadBlobByte(image);
 997   /*
 998     Read DPX image header.
 999   */
1000   if (image_info->ping != MagickFalse)
1001     {
1002       (void) CloseBlob(image);
1003       return(GetFirstImageInList(image));
1004     }
1005   /*
1006     Convert DPX raster image to pixel packets.
1007   */
1008   samples_per_pixel=1;
1009   quantum_type=GrayQuantum;
1010   switch (component_type)
1011   {
1012     case CbYCrY422ComponentType:
1013     {
1014       samples_per_pixel=2;
1015       quantum_type=CbYCrYQuantum;
1016       break;
1017     }
1018     case CbYACrYA4224ComponentType:
1019     case CbYCr444ComponentType:
1020     {
1021       samples_per_pixel=3;
1022       quantum_type=CbYCrQuantum;
1023       break;
1024     }
1025     case RGBComponentType:
1026     {
1027       samples_per_pixel=3;
1028       quantum_type=RGBQuantum;
1029       break;
1030     }
1031     case ABGRComponentType:
1032     case RGBAComponentType:
1033     {
1034       image->matte=MagickTrue;
1035       samples_per_pixel=4;
1036       quantum_type=RGBAQuantum;
1037       break;
1038     }
1039     default:
1040       break;
1041   }
1042   switch (component_type)
1043   {
1044     case CbYCrY422ComponentType:
1045     case CbYACrYA4224ComponentType:
1046     case CbYCr444ComponentType:
1047     {
1048       image->colorspace=Rec709YCbCrColorspace;
1049       break;
1050     }
1051     case LumaComponentType:
1052     {
1053       image->colorspace=RGBColorspace;
1054       break;
1055     }
1056     default:
1057     {
1058       image->colorspace=RGBColorspace;
1059       if (dpx.image.image_element[0].transfer == LogarithmicColorimetric)
1060         image->colorspace=LogColorspace;
1061       if (dpx.image.image_element[0].transfer == PrintingDensityColorimetric)
1062         image->colorspace=LogColorspace;
1063       break;
1064     }
1065   }
1066   extent=GetBytesPerRow(image->columns,samples_per_pixel,image->depth,
1067     dpx.image.image_element[0].packing == 0 ? MagickFalse : MagickTrue);
1068   /*
1069     DPX any-bit pixel format.
1070   */
1071   status=MagickTrue;
1072   row=0;
1073   quantum_info=AcquireQuantumInfo(image_info,image);
1074   if (quantum_info == (QuantumInfo *) NULL)
1075     ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
1076   SetQuantumQuantum(quantum_info,32);
1077   SetQuantumPack(quantum_info,dpx.image.image_element[0].packing == 0 ?
1078     MagickTrue : MagickFalse);
1079   for (y=0; y < (long) image->rows; y++)
1080   {
1081     long
1082       offset;
1083
1084     MagickBooleanType
1085       sync;
1086
1087     register PixelPacket
1088       *q;
1089
1090     ssize_t
1091       count;
1092
1093     size_t
1094       length;
1095
1096     unsigned char
1097       *pixels;
1098
1099     if (status == MagickFalse)
1100       continue;
1101     pixels=GetQuantumPixels(quantum_info);
1102     {
1103       count=ReadBlob(image,extent,pixels);
1104       if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
1105           (image->previous == (Image *) NULL))
1106         {
1107           MagickBooleanType
1108             proceed;
1109
1110           proceed=SetImageProgress(image,LoadImageTag,row,image->rows);
1111           if (proceed == MagickFalse)
1112             status=MagickFalse;
1113         }
1114       offset=row++;
1115     }
1116     if (count != (ssize_t) extent)
1117       status=MagickFalse;
1118     q=QueueAuthenticPixels(image,0,offset,image->columns,1,exception);
1119     if (q == (PixelPacket *) NULL)
1120       {
1121         status=MagickFalse;
1122         continue;
1123       }
1124     length=ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
1125       quantum_type,pixels,exception);
1126     sync=SyncAuthenticPixels(image,exception);
1127     if (sync == MagickFalse)
1128       status=MagickFalse;
1129   }
1130   quantum_info=DestroyQuantumInfo(quantum_info);
1131   if (status == MagickFalse)
1132     ThrowReaderException(CorruptImageError,"UnableToReadImageData");
1133   SetQuantumImageType(image,quantum_type);
1134   if (EOFBlob(image) != MagickFalse)
1135     ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
1136       image->filename);
1137   (void) CloseBlob(image);
1138   return(GetFirstImageInList(image));
1139 }
1140 \f
1141 /*
1142 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1143 %                                                                             %
1144 %                                                                             %
1145 %                                                                             %
1146 %   R e g i s t e r D P X I m a g e                                           %
1147 %                                                                             %
1148 %                                                                             %
1149 %                                                                             %
1150 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1151 %
1152 %  RegisterDPXImage() adds properties for the DPX image format to
1153 %  the list of supported formats.  The properties include the image format
1154 %  tag, a method to read and/or write the format, whether the format
1155 %  supports the saving of more than one frame to the same file or blob,
1156 %  whether the format supports native in-memory I/O, and a brief
1157 %  description of the format.
1158 %
1159 %  The format of the RegisterDPXImage method is:
1160 %
1161 %      unsigned long RegisterDPXImage(void)
1162 %
1163 */
1164 ModuleExport unsigned long RegisterDPXImage(void)
1165 {
1166   MagickInfo
1167     *entry;
1168
1169   static const char
1170     *DPXNote =
1171     {
1172       "Digital Moving Picture Exchange Bitmap, Version 2.0.\n"
1173       "See SMPTE 268M-2003 specification at http://www.smtpe.org\n"
1174     };
1175
1176   entry=SetMagickInfo("DPX");
1177   entry->decoder=(DecodeImageHandler *) ReadDPXImage;
1178   entry->encoder=(EncodeImageHandler *) WriteDPXImage;
1179   entry->magick=(IsImageFormatHandler *) IsDPX;
1180   entry->adjoin=MagickFalse;
1181   entry->description=ConstantString("SMPTE 268M-2003 (DPX 2.0)");
1182   entry->note=ConstantString(DPXNote);
1183   entry->module=ConstantString("DPX");
1184   (void) RegisterMagickInfo(entry);
1185   return(MagickImageCoderSignature);
1186 }
1187 \f
1188 /*
1189 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1190 %                                                                             %
1191 %                                                                             %
1192 %                                                                             %
1193 %   U n r e g i s t e r D P X I m a g e                                       %
1194 %                                                                             %
1195 %                                                                             %
1196 %                                                                             %
1197 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1198 %
1199 %  UnregisterDPXImage() removes format registrations made by the
1200 %  DPX module from the list of supported formats.
1201 %
1202 %  The format of the UnregisterDPXImage method is:
1203 %
1204 %      UnregisterDPXImage(void)
1205 %
1206 */
1207 ModuleExport void UnregisterDPXImage(void)
1208 {
1209   (void) UnregisterMagickInfo("DPX");
1210 }
1211 \f
1212 /*
1213 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1214 %                                                                             %
1215 %                                                                             %
1216 %                                                                             %
1217 %   W r i t e D P X I m a g e                                                 %
1218 %                                                                             %
1219 %                                                                             %
1220 %                                                                             %
1221 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1222 %
1223 %  WriteDPXImage() writes an image in DPX encoded image format.
1224 %
1225 %  The format of the WriteDPXImage method is:
1226 %
1227 %      MagickBooleanType WriteDPXImage(const ImageInfo *image_info,Image *image)
1228 %
1229 %  A description of each parameter follows.
1230 %
1231 %    o image_info: the image info.
1232 %
1233 %    o image:  The image.
1234 %
1235 */
1236
1237 static inline const char *GetDPXProperty(const ImageInfo *image_info,
1238   const Image *image,const char *property)
1239 {
1240   const char
1241     *value;
1242
1243   value=GetImageOption(image_info,property);
1244   if (value != (const char *) NULL)
1245     return(value);
1246   return(GetImageProperty(image,property));
1247 }
1248
1249 static unsigned int StringToTimeCode(const char *key)
1250 {
1251   char
1252     buffer[2];
1253
1254   register long
1255     i;
1256
1257   unsigned int
1258     shift,
1259     value;
1260
1261   value=0;
1262   shift=28;
1263   buffer[1]='\0';
1264   for (i=0; (*key != 0) && (i < 11); i++)
1265   {
1266     if (isxdigit((int) ((unsigned char) *key)) == 0)
1267       {
1268         key++;
1269         continue;
1270       }
1271     buffer[0]=(*key++);
1272     value|=(unsigned int) ((strtol(buffer,(char **) NULL,16)) << shift);
1273     shift-=4;
1274   }
1275   return(value);
1276 }
1277
1278 static MagickBooleanType WriteDPXImage(const ImageInfo *image_info,Image *image)
1279 {
1280   const char
1281     *value;
1282
1283   const StringInfo
1284     *profile;
1285
1286   DPXInfo
1287     dpx;
1288
1289   long
1290     horizontal_factor,
1291     vertical_factor,
1292     y;
1293
1294   MagickBooleanType
1295     status;
1296
1297   MagickOffsetType
1298     offset;
1299
1300   MagickStatusType
1301     flags;
1302
1303   GeometryInfo
1304     geometry_info;
1305
1306   QuantumInfo
1307     *quantum_info;
1308
1309   QuantumType
1310     quantum_type;
1311
1312   register const PixelPacket
1313     *p;
1314
1315   register long
1316     i;
1317
1318   size_t
1319     extent;
1320
1321   ssize_t
1322     count;
1323
1324   time_t
1325     seconds;
1326
1327   unsigned char
1328     *pixels;
1329
1330   /*
1331     Open output image file.
1332   */
1333   assert(image_info != (const ImageInfo *) NULL);
1334   assert(image_info->signature == MagickSignature);
1335   assert(image != (Image *) NULL);
1336   assert(image->signature == MagickSignature);
1337   if (image->debug != MagickFalse)
1338     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1339   horizontal_factor=4;
1340   vertical_factor=4;
1341   if (image_info->sampling_factor != (char *) NULL)
1342     {
1343       GeometryInfo
1344         geometry_info;
1345
1346       MagickStatusType
1347         flags;
1348
1349       flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
1350       horizontal_factor=(long) geometry_info.rho;
1351       vertical_factor=(long) geometry_info.sigma;
1352       if ((flags & SigmaValue) == 0)
1353         vertical_factor=horizontal_factor;
1354       if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
1355           (horizontal_factor != 4) && (vertical_factor != 1) &&
1356           (vertical_factor != 2) && (vertical_factor != 4))
1357         ThrowWriterException(CorruptImageError,"UnexpectedSamplingFactor");
1358     }
1359   if ((image->colorspace == YCbCrColorspace) &&
1360       ((horizontal_factor == 2) || (vertical_factor == 2)))
1361     if ((image->columns % 2) != 0)
1362       image->columns++;
1363   status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
1364   if (status == MagickFalse)
1365     return(status);
1366   /*
1367     Write file header.
1368   */
1369   (void) ResetMagickMemory(&dpx,0,sizeof(dpx));
1370   offset=0;
1371   dpx.file.magic=0x53445058U;
1372   offset+=WriteBlobLong(image,dpx.file.magic);
1373   dpx.file.image_offset=0x2000U;
1374   profile=GetImageProfile(image,"dpx");
1375   if (profile != (StringInfo *) NULL)
1376     {
1377       if (GetStringInfoLength(profile) > 1048576)
1378         ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
1379       dpx.file.image_offset+=(unsigned int) GetStringInfoLength(profile);
1380       dpx.file.image_offset=(((dpx.file.image_offset+0x2000-1)/0x2000)*0x2000);
1381     }
1382   offset+=WriteBlobLong(image,dpx.file.image_offset);
1383   (void) strncpy(dpx.file.version,"V2.0",sizeof(dpx.file.version));
1384   offset+=WriteBlob(image,8,(unsigned char *) &dpx.file.version);
1385   dpx.file.file_size=(unsigned int) (4U*image->columns*image->rows+
1386     dpx.file.image_offset);
1387   offset+=WriteBlobLong(image,dpx.file.file_size);
1388   dpx.file.ditto_key=1U;  /* new frame */
1389   offset+=WriteBlobLong(image,dpx.file.ditto_key);
1390   dpx.file.generic_size=0x00000680U;
1391   offset+=WriteBlobLong(image,dpx.file.generic_size);
1392   dpx.file.industry_size=0x00000180U;
1393   offset+=WriteBlobLong(image,dpx.file.industry_size);
1394   dpx.file.user_size=0;
1395   if (profile != (StringInfo *) NULL)
1396     {
1397       dpx.file.user_size+=(unsigned int) GetStringInfoLength(profile);
1398       dpx.file.user_size=(((dpx.file.user_size+0x2000-1)/0x2000)*0x2000);
1399     }
1400   offset+=WriteBlobLong(image,dpx.file.user_size);
1401   value=GetDPXProperty(image_info,image,"dpx:file.filename");
1402   if (value != (const char *) NULL)
1403     (void) strncpy(dpx.file.filename,value,sizeof(dpx.file.filename));
1404   offset+=WriteBlob(image,sizeof(dpx.file.filename),(unsigned char *)
1405     dpx.file.filename);
1406   seconds=time((time_t *) NULL);
1407   (void) FormatMagickTime(seconds,sizeof(dpx.file.timestamp),
1408     dpx.file.timestamp);
1409   offset+=WriteBlob(image,sizeof(dpx.file.timestamp),(unsigned char *)
1410     dpx.file.timestamp);
1411   (void) strncpy(dpx.file.creator,GetMagickVersion((unsigned long *) NULL),
1412     sizeof(dpx.file.creator));
1413   value=GetDPXProperty(image_info,image,"dpx:file.creator");
1414   if (value != (const char *) NULL)
1415     (void) strncpy(dpx.file.creator,value,sizeof(dpx.file.creator));
1416   offset+=WriteBlob(image,sizeof(dpx.file.creator),(unsigned char *)
1417     dpx.file.creator);
1418   value=GetDPXProperty(image_info,image,"dpx:file.project");
1419   if (value != (const char *) NULL)
1420     (void) strncpy(dpx.file.project,value,sizeof(dpx.file.project));
1421   offset+=WriteBlob(image,sizeof(dpx.file.project),(unsigned char *)
1422     dpx.file.project);
1423   value=GetDPXProperty(image_info,image,"dpx:file.copyright");
1424   if (value != (const char *) NULL)
1425     (void) strncpy(dpx.file.copyright,value,
1426       sizeof(dpx.file.copyright));
1427   offset+=WriteBlob(image,sizeof(dpx.file.copyright),(unsigned char *)
1428     dpx.file.copyright);
1429   dpx.file.encrypt_key=(~0U);
1430   offset+=WriteBlobLong(image,dpx.file.encrypt_key);
1431   offset+=WriteBlob(image,sizeof(dpx.file.reserve),(unsigned char *)
1432     dpx.file.reserve);
1433   /*
1434     Write image header.
1435   */
1436   dpx.image.orientation=0x00;  /* left-to-right; top-to-bottom */
1437   offset+=WriteBlobShort(image,dpx.image.orientation);
1438   dpx.image.number_elements=1;
1439   offset+=WriteBlobShort(image,dpx.image.number_elements);
1440   if ((image->columns != (unsigned int) image->columns) ||
1441       (image->rows != (unsigned int) image->rows))
1442     ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
1443   offset+=WriteBlobLong(image,(unsigned int) image->columns);
1444   offset+=WriteBlobLong(image,(unsigned int) image->rows);
1445   for (i=0; i < 8; i++)
1446   {
1447     dpx.image.image_element[i].data_sign=0U;
1448     offset+=WriteBlobLong(image,dpx.image.image_element[i].data_sign);
1449     dpx.image.image_element[i].low_data=0U;
1450     offset+=WriteBlobLong(image,dpx.image.image_element[i].low_data);
1451     dpx.image.image_element[i].low_quantity=0.0f;
1452     offset+=WriteBlobFloat(image,dpx.image.image_element[i].low_quantity);
1453     dpx.image.image_element[i].high_data=0U;
1454     offset+=WriteBlobLong(image,dpx.image.image_element[i].high_data);
1455     dpx.image.image_element[i].high_quantity=0.0f;
1456     offset+=WriteBlobFloat(image,dpx.image.image_element[i].high_quantity);
1457     dpx.image.image_element[i].descriptor=0;
1458     if (i == 0)
1459       switch (image->colorspace)
1460       {
1461         case Rec601YCbCrColorspace:
1462         case Rec709YCbCrColorspace:
1463         case YCbCrColorspace:
1464         {
1465           dpx.image.image_element[i].descriptor=CbYCr444ComponentType;
1466           if (image->matte != MagickFalse)
1467             dpx.image.image_element[i].descriptor=CbYCrA4444ComponentType;
1468           break;
1469         }
1470         default:
1471         {
1472           dpx.image.image_element[i].descriptor=RGBComponentType;
1473           if (image->matte != MagickFalse)
1474             dpx.image.image_element[i].descriptor=RGBAComponentType;
1475           if ((image_info->type != TrueColorType) &&
1476               (image->matte == MagickFalse) &&
1477               (IsGrayImage(image,&image->exception) != MagickFalse))
1478             dpx.image.image_element[i].descriptor=LumaComponentType;
1479           break;
1480         }
1481       }
1482     offset+=WriteBlobByte(image,dpx.image.image_element[i].descriptor);
1483     dpx.image.image_element[i].transfer=0;
1484     if (image->colorspace == LogColorspace)
1485       dpx.image.image_element[0].transfer=PrintingDensityColorimetric;
1486     offset+=WriteBlobByte(image,dpx.image.image_element[i].transfer);
1487     dpx.image.image_element[i].colorimetric=0;
1488     offset+=WriteBlobByte(image,dpx.image.image_element[i].colorimetric);
1489     dpx.image.image_element[i].bit_size=0;
1490     if (i == 0)
1491       dpx.image.image_element[i].bit_size=(unsigned char) image->depth;
1492     offset+=WriteBlobByte(image,dpx.image.image_element[i].bit_size);
1493     dpx.image.image_element[i].packing=0;
1494     if ((image->depth == 10) || (image->depth == 12))
1495       dpx.image.image_element[i].packing=1;
1496     offset+=WriteBlobShort(image,dpx.image.image_element[i].packing);
1497     dpx.image.image_element[i].encoding=0;
1498     offset+=WriteBlobShort(image,dpx.image.image_element[i].encoding);
1499     dpx.image.image_element[i].data_offset=0U;
1500     if (i == 0)
1501       dpx.image.image_element[i].data_offset=dpx.file.image_offset;
1502     offset+=WriteBlobLong(image,dpx.image.image_element[i].data_offset);
1503     dpx.image.image_element[i].end_of_line_padding=0U;
1504     offset+=WriteBlobLong(image,dpx.image.image_element[i].end_of_line_padding);
1505     offset+=WriteBlobLong(image,
1506       dpx.image.image_element[i].end_of_image_padding);
1507     offset+=WriteBlob(image,sizeof(dpx.image.image_element[i].description),
1508       (unsigned char *) dpx.image.image_element[i].description);
1509   }
1510   offset+=WriteBlob(image,sizeof(dpx.image.reserve),(unsigned char *)
1511     dpx.image.reserve);
1512   /*
1513     Write orientation header.
1514   */
1515   if ((image->rows != image->magick_rows) ||
1516       (image->columns != image->magick_columns))
1517     {
1518       /*
1519         These properties are not valid if image size changed.
1520       */
1521       (void) DeleteImageProperty(image,"dpx:orientation.x_offset");
1522       (void) DeleteImageProperty(image,"dpx:orientation.y_offset");
1523       (void) DeleteImageProperty(image,"dpx:orientation.x_center");
1524       (void) DeleteImageProperty(image,"dpx:orientation.y_center");
1525       (void) DeleteImageProperty(image,"dpx:orientation.x_size");
1526       (void) DeleteImageProperty(image,"dpx:orientation.y_size");
1527     }
1528   dpx.orientation.x_offset=0U;
1529   value=GetDPXProperty(image_info,image,"dpx:orientation.x_offset");
1530   if (value != (const char *) NULL)
1531     dpx.orientation.x_offset=(unsigned int) StringToUnsignedLong(value);
1532   offset+=WriteBlobLong(image,dpx.orientation.x_offset);
1533   dpx.orientation.y_offset=0U;
1534   value=GetDPXProperty(image_info,image,"dpx:orientation.y_offset");
1535   if (value != (const char *) NULL)
1536     dpx.orientation.y_offset=(unsigned int) StringToUnsignedLong(value);
1537   offset+=WriteBlobLong(image,dpx.orientation.y_offset);
1538   dpx.orientation.x_center=0.0f;
1539   value=GetDPXProperty(image_info,image,"dpx:orientation.x_center");
1540   if (value != (const char *) NULL)
1541     dpx.orientation.x_center=StringToDouble(value);
1542   offset+=WriteBlobFloat(image,dpx.orientation.x_center);
1543   dpx.orientation.y_center=0.0f;
1544   value=GetDPXProperty(image_info,image,"dpx:orientation.y_center");
1545   if (value != (const char *) NULL)
1546     dpx.orientation.y_center=StringToDouble(value);
1547   offset+=WriteBlobFloat(image,dpx.orientation.y_center);
1548   dpx.orientation.x_size=0U;
1549   value=GetDPXProperty(image_info,image,"dpx:orientation.x_size");
1550   if (value != (const char *) NULL)
1551     dpx.orientation.x_size=(unsigned int) StringToUnsignedLong(value);
1552   offset+=WriteBlobLong(image,dpx.orientation.x_size);
1553   dpx.orientation.y_size=0U;
1554   value=GetDPXProperty(image_info,image,"dpx:orientation.y_size");
1555   if (value != (const char *) NULL)
1556     dpx.orientation.y_size=(unsigned int) StringToUnsignedLong(value);
1557   offset+=WriteBlobLong(image,dpx.orientation.y_size);
1558   value=GetDPXProperty(image_info,image,"dpx:orientation.filename");
1559   if (value != (const char *) NULL)
1560     (void) strncpy(dpx.orientation.filename,value,
1561       sizeof(dpx.orientation.filename));
1562   offset+=WriteBlob(image,sizeof(dpx.orientation.filename),(unsigned char *)
1563     dpx.orientation.filename);
1564   offset+=WriteBlob(image,sizeof(dpx.orientation.timestamp),(unsigned char *)
1565     dpx.orientation.timestamp);
1566   value=GetDPXProperty(image_info,image,"dpx:orientation.device");
1567   if (value != (const char *) NULL)
1568     (void) strncpy(dpx.orientation.device,value,sizeof(dpx.orientation.device));
1569   offset+=WriteBlob(image,sizeof(dpx.orientation.device),(unsigned char *)
1570     dpx.orientation.device);
1571   value=GetDPXProperty(image_info,image,"dpx:orientation.serial");
1572   if (value != (const char *) NULL)
1573     (void) strncpy(dpx.orientation.serial,value,sizeof(dpx.orientation.serial));
1574   offset+=WriteBlob(image,sizeof(dpx.orientation.serial),(unsigned char *)
1575     dpx.orientation.serial);
1576   for (i=0; i < 4; i++)
1577     dpx.orientation.border[i]=0;
1578   value=GetDPXProperty(image_info,image,"dpx:orientation.border");
1579   if (value != (const char *) NULL)
1580     {
1581       flags=ParseGeometry(value,&geometry_info);
1582       if ((flags & SigmaValue) == 0)
1583         geometry_info.sigma=geometry_info.rho;
1584       dpx.orientation.border[0]=(unsigned short) (geometry_info.rho+0.5);
1585       dpx.orientation.border[1]=(unsigned short) (geometry_info.sigma+0.5);
1586       dpx.orientation.border[2]=(unsigned short) (geometry_info.xi+0.5);
1587       dpx.orientation.border[3]=(unsigned short) (geometry_info.psi+0.5);
1588     }
1589   for (i=0; i < 4; i++)
1590     offset+=WriteBlobShort(image,dpx.orientation.border[i]);
1591   for (i=0; i < 2; i++)
1592     dpx.orientation.aspect_ratio[i]=0U;
1593   value=GetDPXProperty(image_info,image,"dpx:orientation.aspect_ratio");
1594   if (value != (const char *) NULL)
1595     {
1596       flags=ParseGeometry(value,&geometry_info);
1597       if ((flags & SigmaValue) == 0)
1598         geometry_info.sigma=geometry_info.rho;
1599       dpx.orientation.aspect_ratio[0]=(unsigned int) (geometry_info.rho+0.5);
1600       dpx.orientation.aspect_ratio[1]=(unsigned int) (geometry_info.sigma+0.5);
1601     }
1602   for (i=0; i < 2; i++)
1603     offset+=WriteBlobLong(image,dpx.orientation.aspect_ratio[i]);
1604   offset+=WriteBlob(image,sizeof(dpx.orientation.reserve),(unsigned char *)
1605     dpx.orientation.reserve);
1606   /*
1607     Write film header.
1608   */
1609   *dpx.film.id='\0';
1610   value=GetDPXProperty(image_info,image,"dpx:film.id");
1611   if (value != (const char *) NULL)
1612     (void) strncpy(dpx.film.id,value,sizeof(dpx.film.id));
1613   offset+=WriteBlob(image,sizeof(dpx.film.id),(unsigned char *) dpx.film.id);
1614   *dpx.film.type='\0';
1615   value=GetDPXProperty(image_info,image,"dpx:film.type");
1616   if (value != (const char *) NULL)
1617     (void) strncpy(dpx.film.type,value,sizeof(dpx.film.type));
1618   offset+=WriteBlob(image,sizeof(dpx.film.type),(unsigned char *)
1619     dpx.film.type);
1620   *dpx.film.offset='\0';
1621   value=GetDPXProperty(image_info,image,"dpx:film.offset");
1622   if (value != (const char *) NULL)
1623     (void) strncpy(dpx.film.offset,value,sizeof(dpx.film.offset));
1624   offset+=WriteBlob(image,sizeof(dpx.film.offset),(unsigned char *)
1625     dpx.film.offset);
1626   *dpx.film.prefix='\0';
1627   value=GetDPXProperty(image_info,image,"dpx:film.prefix");
1628   if (value != (const char *) NULL)
1629     (void) strncpy(dpx.film.prefix,value,sizeof(dpx.film.prefix));
1630   offset+=WriteBlob(image,sizeof(dpx.film.prefix),(unsigned char *)
1631     dpx.film.prefix);
1632   *dpx.film.count='\0';
1633   value=GetDPXProperty(image_info,image,"dpx:film.count");
1634   if (value != (const char *) NULL)
1635     (void) strncpy(dpx.film.count,value,sizeof(dpx.film.count));
1636   offset+=WriteBlob(image,sizeof(dpx.film.count),(unsigned char *)
1637     dpx.film.count);
1638   *dpx.film.format='\0';
1639   value=GetDPXProperty(image_info,image,"dpx:film.format");
1640   if (value != (const char *) NULL)
1641     (void) strncpy(dpx.film.format,value,sizeof(dpx.film.format));
1642   offset+=WriteBlob(image,sizeof(dpx.film.format),(unsigned char *)
1643     dpx.film.format);
1644   dpx.film.frame_position=0U;
1645   value=GetDPXProperty(image_info,image,"dpx:film.frame_position");
1646   if (value != (const char *) NULL)
1647     dpx.film.frame_position=(unsigned int) StringToUnsignedLong(value);
1648   offset+=WriteBlobLong(image,dpx.film.frame_position);
1649   dpx.film.sequence_extent=0U;
1650   value=GetDPXProperty(image_info,image,"dpx:film.sequence_extent");
1651   if (value != (const char *) NULL)
1652     dpx.film.sequence_extent=(unsigned int) StringToUnsignedLong(value);
1653   offset+=WriteBlobLong(image,dpx.film.sequence_extent);
1654   dpx.film.held_count=0U;
1655   value=GetDPXProperty(image_info,image,"dpx:film.held_count");
1656   if (value != (const char *) NULL)
1657     dpx.film.held_count=(unsigned int) StringToUnsignedLong(value);
1658   offset+=WriteBlobLong(image,dpx.film.held_count);
1659   dpx.film.frame_rate=0.0f;
1660   value=GetDPXProperty(image_info,image,"dpx:film.frame_rate");
1661   if (value != (const char *) NULL)
1662     dpx.film.frame_rate=StringToDouble(value);
1663   offset+=WriteBlobFloat(image,dpx.film.frame_rate);
1664   dpx.film.shutter_angle=0.0f;
1665   value=GetDPXProperty(image_info,image,"dpx:film.shutter_angle");
1666   if (value != (const char *) NULL)
1667     dpx.film.shutter_angle=StringToDouble(value);
1668   offset+=WriteBlobFloat(image,dpx.film.shutter_angle);
1669   *dpx.film.frame_id='\0';
1670   value=GetDPXProperty(image_info,image,"dpx:film.frame_id");
1671   if (value != (const char *) NULL)
1672     (void) strncpy(dpx.film.frame_id,value,sizeof(dpx.film.frame_id));
1673   offset+=WriteBlob(image,sizeof(dpx.film.frame_id),(unsigned char *)
1674     dpx.film.frame_id);
1675   value=GetDPXProperty(image_info,image,"dpx:film.slate");
1676   if (value != (const char *) NULL)
1677     (void) strncpy(dpx.film.slate,value,sizeof(dpx.film.slate));
1678   offset+=WriteBlob(image,sizeof(dpx.film.slate),(unsigned char *)
1679     dpx.film.slate);
1680   offset+=WriteBlob(image,sizeof(dpx.film.reserve),(unsigned char *)
1681     dpx.film.reserve);
1682   /*
1683     Write television header.
1684   */
1685   value=GetDPXProperty(image_info,image,"dpx:television.time.code");
1686   if (value != (const char *) NULL)
1687     dpx.television.time_code=StringToTimeCode(value);
1688   offset+=WriteBlobLong(image,dpx.television.time_code);
1689   value=GetDPXProperty(image_info,image,"dpx:television.user.bits");
1690   if (value != (const char *) NULL)
1691     dpx.television.user_bits=StringToTimeCode(value);
1692   offset+=WriteBlobLong(image,dpx.television.user_bits);
1693   value=GetDPXProperty(image_info,image,"dpx:television.interlace");
1694   if (value != (const char *) NULL)
1695     dpx.television.interlace=(unsigned char) StringToLong(value);
1696   offset+=WriteBlobByte(image,dpx.television.interlace);
1697   value=GetDPXProperty(image_info,image,"dpx:television.field_number");
1698   if (value != (const char *) NULL)
1699     dpx.television.field_number=(unsigned char) StringToLong(value);
1700   offset+=WriteBlobByte(image,dpx.television.field_number);
1701   dpx.television.video_signal=0;
1702   value=GetDPXProperty(image_info,image,"dpx:television.video_signal");
1703   if (value != (const char *) NULL)
1704     dpx.television.video_signal=(unsigned char) StringToLong(value);
1705   offset+=WriteBlobByte(image,dpx.television.video_signal);
1706   dpx.television.padding=0;
1707   value=GetDPXProperty(image_info,image,"dpx:television.padding");
1708   if (value != (const char *) NULL)
1709     dpx.television.padding=(unsigned char) StringToLong(value);
1710   offset+=WriteBlobByte(image,dpx.television.padding);
1711   dpx.television.horizontal_sample_rate=0.0f;
1712   value=GetDPXProperty(image_info,image,
1713     "dpx:television.horizontal_sample_rate");
1714   if (value != (const char *) NULL)
1715     dpx.television.horizontal_sample_rate=StringToDouble(value);
1716   offset+=WriteBlobFloat(image,dpx.television.horizontal_sample_rate);
1717   dpx.television.vertical_sample_rate=0.0f;
1718   value=GetDPXProperty(image_info,image,"dpx:television.vertical_sample_rate");
1719   if (value != (const char *) NULL)
1720     dpx.television.vertical_sample_rate=StringToDouble(value);
1721   offset+=WriteBlobFloat(image,dpx.television.vertical_sample_rate);
1722   dpx.television.frame_rate=0.0f;
1723   value=GetDPXProperty(image_info,image,"dpx:television.frame_rate");
1724   if (value != (const char *) NULL)
1725     dpx.television.frame_rate=StringToDouble(value);
1726   offset+=WriteBlobFloat(image,dpx.television.frame_rate);
1727   dpx.television.time_offset=0.0f;
1728   value=GetDPXProperty(image_info,image,"dpx:television.time_offset");
1729   if (value != (const char *) NULL)
1730     dpx.television.time_offset=StringToDouble(value);
1731   offset+=WriteBlobFloat(image,dpx.television.time_offset);
1732   dpx.television.gamma=0.0f;
1733   value=GetDPXProperty(image_info,image,"dpx:television.gamma");
1734   if (value != (const char *) NULL)
1735     dpx.television.gamma=StringToDouble(value);
1736   offset+=WriteBlobFloat(image,dpx.television.gamma);
1737   dpx.television.black_level=0.0f;
1738   value=GetDPXProperty(image_info,image,"dpx:television.black_level");
1739   if (value != (const char *) NULL)
1740     dpx.television.black_level=StringToDouble(value);
1741   offset+=WriteBlobFloat(image,dpx.television.black_level);
1742   dpx.television.black_gain=0.0f;
1743   value=GetDPXProperty(image_info,image,"dpx:television.black_gain");
1744   if (value != (const char *) NULL)
1745     dpx.television.black_gain=StringToDouble(value);
1746   offset+=WriteBlobFloat(image,dpx.television.black_gain);
1747   dpx.television.break_point=0.0f;
1748   value=GetDPXProperty(image_info,image,"dpx:television.break_point");
1749   if (value != (const char *) NULL)
1750     dpx.television.break_point=StringToDouble(value);
1751   offset+=WriteBlobFloat(image,dpx.television.break_point);
1752   dpx.television.white_level=0.0f;
1753   value=GetDPXProperty(image_info,image,"dpx:television.white_level");
1754   if (value != (const char *) NULL)
1755     dpx.television.white_level=StringToDouble(value);
1756   offset+=WriteBlobFloat(image,dpx.television.white_level);
1757   dpx.television.integration_times=0.0f;
1758   value=GetDPXProperty(image_info,image,"dpx:television.integration_times");
1759   if (value != (const char *) NULL)
1760     dpx.television.integration_times=StringToDouble(value);
1761   offset+=WriteBlobFloat(image,dpx.television.integration_times);
1762   offset+=WriteBlob(image,sizeof(dpx.television.reserve),(unsigned char *)
1763     dpx.television.reserve);
1764   /*
1765     Write user header.
1766   */
1767   value=GetDPXProperty(image_info,image,"dpx:user.id");
1768   if (value != (const char *) NULL)
1769     (void) strncpy(dpx.user.id,value,sizeof(dpx.user.id));
1770   offset+=WriteBlob(image,sizeof(dpx.user.id),(unsigned char *) dpx.user.id);
1771   if (profile != (StringInfo *) NULL)
1772     offset+=WriteBlob(image,GetStringInfoLength(profile),
1773       GetStringInfoDatum(profile));
1774   while (offset < (MagickOffsetType) dpx.image.image_element[0].data_offset)
1775   {
1776     count=WriteBlobByte(image,0x00);
1777     if (count != 1)
1778       {
1779         ThrowFileException(&image->exception,FileOpenError,"UnableToWriteFile",
1780           image->filename);
1781         break;
1782       }
1783     offset+=count;
1784   }
1785   /*
1786     Convert pixel packets to DPX raster image.
1787   */
1788   quantum_info=AcquireQuantumInfo(image_info,image);
1789   SetQuantumQuantum(quantum_info,32);
1790   SetQuantumPack(quantum_info,dpx.image.image_element[0].packing == 0 ?
1791     MagickTrue : MagickFalse);
1792   quantum_type=RGBQuantum;
1793   if (image->matte != MagickFalse)
1794     quantum_type=RGBAQuantum;
1795   if (image->colorspace == YCbCrColorspace)
1796     {
1797       quantum_type=CbYCrQuantum;
1798       if (image->matte != MagickFalse)
1799         quantum_type=CbYCrAQuantum;
1800       if ((horizontal_factor == 2) || (vertical_factor == 2))
1801         quantum_type=CbYCrYQuantum;
1802     }
1803   extent=GetBytesPerRow(image->columns,image->matte != MagickFalse ? 4UL : 3UL,
1804     image->depth,MagickTrue);
1805   if ((image_info->type != TrueColorType) && (image->matte == MagickFalse) &&
1806       (IsGrayImage(image,&image->exception) != MagickFalse))
1807     {
1808       quantum_type=GrayQuantum;
1809       extent=GetBytesPerRow(image->columns,1UL,image->depth,MagickTrue);
1810     }
1811   pixels=GetQuantumPixels(quantum_info);
1812   for (y=0; y < (long) image->rows; y++)
1813   {
1814     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
1815     if (p == (const PixelPacket *) NULL)
1816       break;
1817     (void) ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info,
1818       quantum_type,pixels,&image->exception);
1819     count=WriteBlob(image,extent,pixels);
1820     if (count != (ssize_t) extent)
1821       break;
1822     status=SetImageProgress(image,SaveImageTag,y,image->rows);
1823     if (status == MagickFalse)
1824       break;
1825   }
1826   quantum_info=DestroyQuantumInfo(quantum_info);
1827   (void) CloseBlob(image);
1828   return(status);
1829 }