1 /*****************************************************************************/ 2 // Copyright 2006-2008 Adobe Systems Incorporated 3 // All Rights Reserved. 4 // 5 // NOTICE: Adobe permits you to use, modify, and distribute this file in 6 // accordance with the terms of the Adobe license agreement accompanying it. 7 /*****************************************************************************/ 8 9 /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_exif.cpp#1 $ */ 10 /* $DateTime: 2012/05/30 13:28:51 $ */ 11 /* $Change: 832332 $ */ 12 /* $Author: tknoll $ */ 13 14 /*****************************************************************************/ 15 16 #include "dng_exif.h" 17 18 #include "dng_tag_codes.h" 19 #include "dng_tag_types.h" 20 #include "dng_parse_utils.h" 21 #include "dng_globals.h" 22 #include "dng_exceptions.h" 23 #include "dng_tag_values.h" 24 #include "dng_utils.h" 25 26 /*****************************************************************************/ 27 28 dng_exif::dng_exif () 29 30 : fImageDescription () 31 , fMake () 32 , fModel () 33 , fSoftware () 34 , fArtist () 35 , fCopyright () 36 , fCopyright2 () 37 , fUserComment () 38 39 , fDateTime () 40 , fDateTimeStorageInfo () 41 42 , fDateTimeOriginal () 43 , fDateTimeOriginalStorageInfo () 44 45 , fDateTimeDigitized () 46 , fDateTimeDigitizedStorageInfo () 47 48 , fTIFF_EP_StandardID (0) 49 , fExifVersion (0) 50 , fFlashPixVersion (0) 51 52 , fExposureTime () 53 , fFNumber () 54 , fShutterSpeedValue () 55 , fApertureValue () 56 , fBrightnessValue () 57 , fExposureBiasValue () 58 , fMaxApertureValue () 59 , fFocalLength () 60 , fDigitalZoomRatio () 61 , fExposureIndex () 62 , fSubjectDistance () 63 , fGamma () 64 65 , fBatteryLevelR () 66 , fBatteryLevelA () 67 68 , fExposureProgram (0xFFFFFFFF) 69 , fMeteringMode (0xFFFFFFFF) 70 , fLightSource (0xFFFFFFFF) 71 , fFlash (0xFFFFFFFF) 72 , fFlashMask (0x0000FFFF) 73 , fSensingMethod (0xFFFFFFFF) 74 , fColorSpace (0xFFFFFFFF) 75 , fFileSource (0xFFFFFFFF) 76 , fSceneType (0xFFFFFFFF) 77 , fCustomRendered (0xFFFFFFFF) 78 , fExposureMode (0xFFFFFFFF) 79 , fWhiteBalance (0xFFFFFFFF) 80 , fSceneCaptureType (0xFFFFFFFF) 81 , fGainControl (0xFFFFFFFF) 82 , fContrast (0xFFFFFFFF) 83 , fSaturation (0xFFFFFFFF) 84 , fSharpness (0xFFFFFFFF) 85 , fSubjectDistanceRange (0xFFFFFFFF) 86 , fSelfTimerMode (0xFFFFFFFF) 87 , fImageNumber (0xFFFFFFFF) 88 89 , fFocalLengthIn35mmFilm (0) 90 91 , fSensitivityType (0) 92 , fStandardOutputSensitivity (0) 93 , fRecommendedExposureIndex (0) 94 , fISOSpeed (0) 95 , fISOSpeedLatitudeyyy (0) 96 , fISOSpeedLatitudezzz (0) 97 98 , fSubjectAreaCount (0) 99 100 , fComponentsConfiguration (0) 101 102 , fCompresssedBitsPerPixel () 103 104 , fPixelXDimension (0) 105 , fPixelYDimension (0) 106 107 , fFocalPlaneXResolution () 108 , fFocalPlaneYResolution () 109 110 , fFocalPlaneResolutionUnit (0xFFFFFFFF) 111 112 , fCFARepeatPatternRows (0) 113 , fCFARepeatPatternCols (0) 114 115 , fImageUniqueID () 116 117 , fGPSVersionID (0) 118 , fGPSLatitudeRef () 119 , fGPSLongitudeRef () 120 , fGPSAltitudeRef (0xFFFFFFFF) 121 , fGPSAltitude () 122 , fGPSSatellites () 123 , fGPSStatus () 124 , fGPSMeasureMode () 125 , fGPSDOP () 126 , fGPSSpeedRef () 127 , fGPSSpeed () 128 , fGPSTrackRef () 129 , fGPSTrack () 130 , fGPSImgDirectionRef () 131 , fGPSImgDirection () 132 , fGPSMapDatum () 133 , fGPSDestLatitudeRef () 134 , fGPSDestLongitudeRef () 135 , fGPSDestBearingRef () 136 , fGPSDestBearing () 137 , fGPSDestDistanceRef () 138 , fGPSDestDistance () 139 , fGPSProcessingMethod () 140 , fGPSAreaInformation () 141 , fGPSDateStamp () 142 , fGPSDifferential (0xFFFFFFFF) 143 , fGPSHPositioningError () 144 145 , fInteroperabilityIndex () 146 147 , fInteroperabilityVersion (0) 148 149 , fRelatedImageFileFormat () 150 151 , fRelatedImageWidth (0) 152 , fRelatedImageLength (0) 153 154 , fCameraSerialNumber () 155 156 , fLensID () 157 , fLensMake () 158 , fLensName () 159 , fLensSerialNumber () 160 161 , fLensNameWasReadFromExif (false) 162 163 , fApproxFocusDistance () 164 165 , fFlashCompensation () 166 167 , fOwnerName () 168 , fFirmware () 169 170 { 171 172 uint32 j; 173 uint32 k; 174 175 fISOSpeedRatings [0] = 0; 176 fISOSpeedRatings [1] = 0; 177 fISOSpeedRatings [2] = 0; 178 179 for (j = 0; j < kMaxCFAPattern; j++) 180 for (k = 0; k < kMaxCFAPattern; k++) 181 { 182 fCFAPattern [j] [k] = 255; 183 } 184 185 } 186 187 /*****************************************************************************/ 188 189 dng_exif::~dng_exif () 190 { 191 192 } 193 194 /*****************************************************************************/ 195 196 dng_exif * dng_exif::Clone () const 197 { 198 199 dng_exif *result = new dng_exif (*this); 200 201 if (!result) 202 { 203 ThrowMemoryFull (); 204 } 205 206 return result; 207 208 } 209 210 /*****************************************************************************/ 211 212 void dng_exif::SetEmpty () 213 { 214 215 *this = dng_exif (); 216 217 } 218 219 /*****************************************************************************/ 220 221 void dng_exif::CopyGPSFrom (const dng_exif &exif) 222 { 223 224 fGPSVersionID = exif.fGPSVersionID; 225 fGPSLatitudeRef = exif.fGPSLatitudeRef; 226 fGPSLatitude [0] = exif.fGPSLatitude [0]; 227 fGPSLatitude [1] = exif.fGPSLatitude [1]; 228 fGPSLatitude [2] = exif.fGPSLatitude [2]; 229 fGPSLongitudeRef = exif.fGPSLongitudeRef; 230 fGPSLongitude [0] = exif.fGPSLongitude [0]; 231 fGPSLongitude [1] = exif.fGPSLongitude [1]; 232 fGPSLongitude [2] = exif.fGPSLongitude [2]; 233 fGPSAltitudeRef = exif.fGPSAltitudeRef; 234 fGPSAltitude = exif.fGPSAltitude; 235 fGPSTimeStamp [0] = exif.fGPSTimeStamp [0]; 236 fGPSTimeStamp [1] = exif.fGPSTimeStamp [1]; 237 fGPSTimeStamp [2] = exif.fGPSTimeStamp [2]; 238 fGPSSatellites = exif.fGPSSatellites; 239 fGPSStatus = exif.fGPSStatus; 240 fGPSMeasureMode = exif.fGPSMeasureMode; 241 fGPSDOP = exif.fGPSDOP; 242 fGPSSpeedRef = exif.fGPSSpeedRef; 243 fGPSSpeed = exif.fGPSSpeed; 244 fGPSTrackRef = exif.fGPSTrackRef; 245 fGPSTrack = exif.fGPSTrack; 246 fGPSImgDirectionRef = exif.fGPSImgDirectionRef; 247 fGPSImgDirection = exif.fGPSImgDirection; 248 fGPSMapDatum = exif.fGPSMapDatum; 249 fGPSDestLatitudeRef = exif.fGPSDestLatitudeRef; 250 fGPSDestLatitude [0] = exif.fGPSDestLatitude [0]; 251 fGPSDestLatitude [1] = exif.fGPSDestLatitude [1]; 252 fGPSDestLatitude [2] = exif.fGPSDestLatitude [2]; 253 fGPSDestLongitudeRef = exif.fGPSDestLongitudeRef; 254 fGPSDestLongitude [0] = exif.fGPSDestLongitude [0]; 255 fGPSDestLongitude [1] = exif.fGPSDestLongitude [1]; 256 fGPSDestLongitude [2] = exif.fGPSDestLongitude [2]; 257 fGPSDestBearingRef = exif.fGPSDestBearingRef; 258 fGPSDestBearing = exif.fGPSDestBearing; 259 fGPSDestDistanceRef = exif.fGPSDestDistanceRef; 260 fGPSDestDistance = exif.fGPSDestDistance; 261 fGPSProcessingMethod = exif.fGPSProcessingMethod; 262 fGPSAreaInformation = exif.fGPSAreaInformation; 263 fGPSDateStamp = exif.fGPSDateStamp; 264 fGPSDifferential = exif.fGPSDifferential; 265 fGPSHPositioningError = exif.fGPSHPositioningError; 266 267 } 268 269 /*****************************************************************************/ 270 271 // Fix up common errors and rounding issues with EXIF exposure times. 272 273 real64 dng_exif::SnapExposureTime (real64 et) 274 { 275 276 // Protection against invalid values. 277 278 if (et <= 0.0) 279 return 0.0; 280 281 // If near a standard shutter speed, snap to it. 282 283 static const real64 kStandardSpeed [] = 284 { 285 30.0, 286 25.0, 287 20.0, 288 15.0, 289 13.0, 290 10.0, 291 8.0, 292 6.0, 293 5.0, 294 4.0, 295 3.2, 296 3.0, 297 2.5, 298 2.0, 299 1.6, 300 1.5, 301 1.3, 302 1.0, 303 0.8, 304 0.7, 305 0.6, 306 0.5, 307 0.4, 308 0.3, 309 1.0 / 4.0, 310 1.0 / 5.0, 311 1.0 / 6.0, 312 1.0 / 8.0, 313 1.0 / 10.0, 314 1.0 / 13.0, 315 1.0 / 15.0, 316 1.0 / 20.0, 317 1.0 / 25.0, 318 1.0 / 30.0, 319 1.0 / 40.0, 320 1.0 / 45.0, 321 1.0 / 50.0, 322 1.0 / 60.0, 323 1.0 / 80.0, 324 1.0 / 90.0, 325 1.0 / 100.0, 326 1.0 / 125.0, 327 1.0 / 160.0, 328 1.0 / 180.0, 329 1.0 / 200.0, 330 1.0 / 250.0, 331 1.0 / 320.0, 332 1.0 / 350.0, 333 1.0 / 400.0, 334 1.0 / 500.0, 335 1.0 / 640.0, 336 1.0 / 750.0, 337 1.0 / 800.0, 338 1.0 / 1000.0, 339 1.0 / 1250.0, 340 1.0 / 1500.0, 341 1.0 / 1600.0, 342 1.0 / 2000.0, 343 1.0 / 2500.0, 344 1.0 / 3000.0, 345 1.0 / 3200.0, 346 1.0 / 4000.0, 347 1.0 / 5000.0, 348 1.0 / 6000.0, 349 1.0 / 6400.0, 350 1.0 / 8000.0, 351 1.0 / 10000.0, 352 1.0 / 12000.0, 353 1.0 / 12800.0, 354 1.0 / 16000.0 355 }; 356 357 uint32 count = sizeof (kStandardSpeed ) / 358 sizeof (kStandardSpeed [0]); 359 360 for (uint32 fudge = 0; fudge <= 1; fudge++) 361 { 362 363 real64 testSpeed = et; 364 365 if (fudge == 1) 366 { 367 368 // Often APEX values are rounded to a power of two, 369 // which results in non-standard shutter speeds. 370 371 if (et >= 0.1) 372 { 373 374 // No fudging slower than 1/10 second 375 376 break; 377 378 } 379 380 else if (et >= 0.01) 381 { 382 383 // Between 1/10 and 1/100 the commonly misrounded 384 // speeds are 1/15, 1/30, 1/60, which are often encoded as 385 // 1/16, 1/32, 1/64. Try fudging and see if we get 386 // near a standard speed. 387 388 testSpeed *= 16.0 / 15.0; 389 390 } 391 392 else 393 { 394 395 // Faster than 1/100, the commonly misrounded 396 // speeds are 1/125, 1/250, 1/500, etc., which 397 // are often encoded as 1/128, 1/256, 1/512. 398 399 testSpeed *= 128.0 / 125.0; 400 401 } 402 403 } 404 405 for (uint32 index = 0; index < count; index++) 406 { 407 408 if (testSpeed >= kStandardSpeed [index] * 0.98 && 409 testSpeed <= kStandardSpeed [index] * 1.02) 410 { 411 412 return kStandardSpeed [index]; 413 414 } 415 416 } 417 418 } 419 420 // We are not near any standard speeds. Round the non-standard value to something 421 // that looks reasonable. 422 423 if (et >= 10.0) 424 { 425 426 // Round to nearest second. 427 428 et = floor (et + 0.5); 429 430 } 431 432 else if (et >= 0.5) 433 { 434 435 // Round to nearest 1/10 second 436 437 et = floor (et * 10.0 + 0.5) * 0.1; 438 439 } 440 441 else if (et >= 1.0 / 20.0) 442 { 443 444 // Round to an exact inverse. 445 446 et = 1.0 / floor (1.0 / et + 0.5); 447 448 } 449 450 else if (et >= 1.0 / 130.0) 451 { 452 453 // Round inverse to multiple of 5 454 455 et = 0.2 / floor (0.2 / et + 0.5); 456 457 } 458 459 else if (et >= 1.0 / 750.0) 460 { 461 462 // Round inverse to multiple of 10 463 464 et = 0.1 / floor (0.1 / et + 0.5); 465 466 } 467 468 else if (et >= 1.0 / 1300.0) 469 { 470 471 // Round inverse to multiple of 50 472 473 et = 0.02 / floor (0.02 / et + 0.5); 474 475 } 476 477 else if (et >= 1.0 / 15000.0) 478 { 479 480 // Round inverse to multiple of 100 481 482 et = 0.01 / floor (0.01 / et + 0.5); 483 484 } 485 486 else 487 { 488 489 // Round inverse to multiple of 1000 490 491 et = 0.001 / floor (0.001 / et + 0.5); 492 493 } 494 495 return et; 496 497 } 498 499 /*****************************************************************************/ 500 501 void dng_exif::SetExposureTime (real64 et, bool snap) 502 { 503 504 fExposureTime.Clear (); 505 506 fShutterSpeedValue.Clear (); 507 508 if (snap) 509 { 510 511 et = SnapExposureTime (et); 512 513 } 514 515 if (et >= 1.0 / 32768.0 && et <= 32768.0) 516 { 517 518 if (et >= 100.0) 519 { 520 521 fExposureTime.Set_real64 (et, 1); 522 523 } 524 525 else if (et >= 1.0) 526 { 527 528 fExposureTime.Set_real64 (et, 10); 529 530 fExposureTime.ReduceByFactor (10); 531 532 } 533 534 else if (et <= 0.1) 535 { 536 537 fExposureTime = dng_urational (1, Round_uint32 (1.0 / et)); 538 539 } 540 541 else 542 { 543 544 fExposureTime.Set_real64 (et, 100); 545 546 fExposureTime.ReduceByFactor (10); 547 548 for (uint32 f = 2; f <= 9; f++) 549 { 550 551 real64 z = 1.0 / (real64) f / et; 552 553 if (z >= 0.99 && z <= 1.01) 554 { 555 556 fExposureTime = dng_urational (1, f); 557 558 break; 559 560 } 561 562 } 563 564 } 565 566 // Now mirror this value to the ShutterSpeedValue field. 567 568 et = fExposureTime.As_real64 (); 569 570 fShutterSpeedValue.Set_real64 (-log (et) / log (2.0), 1000000); 571 572 fShutterSpeedValue.ReduceByFactor (10); 573 fShutterSpeedValue.ReduceByFactor (10); 574 fShutterSpeedValue.ReduceByFactor (10); 575 fShutterSpeedValue.ReduceByFactor (10); 576 fShutterSpeedValue.ReduceByFactor (10); 577 fShutterSpeedValue.ReduceByFactor (10); 578 579 } 580 581 } 582 583 /*****************************************************************************/ 584 585 void dng_exif::SetShutterSpeedValue (real64 ss) 586 { 587 588 if (fExposureTime.NotValid ()) 589 { 590 591 real64 et = pow (2.0, -ss); 592 593 SetExposureTime (et, true); 594 595 } 596 597 } 598 599 /******************************************************************************/ 600 601 dng_urational dng_exif::EncodeFNumber (real64 fs) 602 { 603 604 dng_urational y; 605 606 if (fs > 10.0) 607 { 608 609 y.Set_real64 (fs, 1); 610 611 } 612 613 else if (fs < 1.0) 614 { 615 616 y.Set_real64 (fs, 100); 617 618 y.ReduceByFactor (10); 619 y.ReduceByFactor (10); 620 621 } 622 623 else 624 { 625 626 y.Set_real64 (fs, 10); 627 628 y.ReduceByFactor (10); 629 630 } 631 632 return y; 633 634 } 635 636 /*****************************************************************************/ 637 638 void dng_exif::SetFNumber (real64 fs) 639 { 640 641 fFNumber.Clear (); 642 643 fApertureValue.Clear (); 644 645 // Allow f-number values less than 1.0 (e.g., f/0.95), even though they would 646 // correspond to negative APEX values, which the EXIF specification does not 647 // support (ApertureValue is a rational, not srational). The ApertureValue tag 648 // will be omitted in the case where fs < 1.0. 649 650 if (fs > 0.0 && fs <= 32768.0) 651 { 652 653 fFNumber = EncodeFNumber (fs); 654 655 // Now mirror this value to the ApertureValue field. 656 657 real64 av = FNumberToApertureValue (fFNumber); 658 659 if (av >= 0.0 && av <= 99.99) 660 { 661 662 fApertureValue.Set_real64 (av, 1000000); 663 664 fApertureValue.ReduceByFactor (10); 665 fApertureValue.ReduceByFactor (10); 666 fApertureValue.ReduceByFactor (10); 667 fApertureValue.ReduceByFactor (10); 668 fApertureValue.ReduceByFactor (10); 669 fApertureValue.ReduceByFactor (10); 670 671 } 672 673 } 674 675 } 676 677 /*****************************************************************************/ 678 679 void dng_exif::SetApertureValue (real64 av) 680 { 681 682 if (fFNumber.NotValid ()) 683 { 684 685 SetFNumber (ApertureValueToFNumber (av)); 686 687 } 688 689 } 690 691 /*****************************************************************************/ 692 693 real64 dng_exif::ApertureValueToFNumber (real64 av) 694 { 695 696 return pow (2.0, 0.5 * av); 697 698 } 699 700 /*****************************************************************************/ 701 702 real64 dng_exif::ApertureValueToFNumber (const dng_urational &av) 703 { 704 705 return ApertureValueToFNumber (av.As_real64 ()); 706 707 } 708 709 /*****************************************************************************/ 710 711 real64 dng_exif::FNumberToApertureValue (real64 fNumber) 712 { 713 714 return 2.0 * log (fNumber) / log (2.0); 715 716 } 717 718 /*****************************************************************************/ 719 720 real64 dng_exif::FNumberToApertureValue (const dng_urational &fNumber) 721 { 722 723 return FNumberToApertureValue (fNumber.As_real64 ()); 724 725 } 726 727 /*****************************************************************************/ 728 729 void dng_exif::UpdateDateTime (const dng_date_time_info &dt) 730 { 731 732 fDateTime = dt; 733 734 } 735 736 /*****************************************************************************/ 737 738 bool dng_exif::AtLeastVersion0230 () const 739 { 740 741 uint32 b0 = (fExifVersion >> 24) & 0xff; 742 uint32 b1 = (fExifVersion >> 16) & 0xff; 743 uint32 b2 = (fExifVersion >> 8) & 0xff; 744 745 return (b0 > 0) || (b1 >= 2 && b2 >= 3); 746 747 } 748 749 /*****************************************************************************/ 750 751 bool dng_exif::ParseTag (dng_stream &stream, 752 dng_shared &shared, 753 uint32 parentCode, 754 bool isMainIFD, 755 uint32 tagCode, 756 uint32 tagType, 757 uint32 tagCount, 758 uint64 tagOffset) 759 { 760 761 if (parentCode == 0) 762 { 763 764 if (Parse_ifd0 (stream, 765 shared, 766 parentCode, 767 tagCode, 768 tagType, 769 tagCount, 770 tagOffset)) 771 { 772 773 return true; 774 775 } 776 777 } 778 779 if (parentCode == 0 || isMainIFD) 780 { 781 782 if (Parse_ifd0_main (stream, 783 shared, 784 parentCode, 785 tagCode, 786 tagType, 787 tagCount, 788 tagOffset)) 789 { 790 791 return true; 792 793 } 794 795 } 796 797 if (parentCode == 0 || 798 parentCode == tcExifIFD) 799 { 800 801 if (Parse_ifd0_exif (stream, 802 shared, 803 parentCode, 804 tagCode, 805 tagType, 806 tagCount, 807 tagOffset)) 808 { 809 810 return true; 811 812 } 813 814 } 815 816 if (parentCode == tcGPSInfo) 817 { 818 819 if (Parse_gps (stream, 820 shared, 821 parentCode, 822 tagCode, 823 tagType, 824 tagCount, 825 tagOffset)) 826 { 827 828 return true; 829 830 } 831 832 } 833 834 if (parentCode == tcInteroperabilityIFD) 835 { 836 837 if (Parse_interoperability (stream, 838 shared, 839 parentCode, 840 tagCode, 841 tagType, 842 tagCount, 843 tagOffset)) 844 { 845 846 return true; 847 848 } 849 850 } 851 852 return false; 853 854 } 855 856 /*****************************************************************************/ 857 858 // Parses tags that should only appear in IFD 0. 859 860 bool dng_exif::Parse_ifd0 (dng_stream &stream, 861 dng_shared & /* shared */, 862 uint32 parentCode, 863 uint32 tagCode, 864 uint32 tagType, 865 uint32 tagCount, 866 uint64 /* tagOffset */) 867 { 868 869 switch (tagCode) 870 { 871 872 case tcImageDescription: 873 { 874 875 CheckTagType (parentCode, tagCode, tagType, ttAscii); 876 877 ParseStringTag (stream, 878 parentCode, 879 tagCode, 880 tagCount, 881 fImageDescription); 882 883 #if qDNGValidate 884 885 if (gVerbose) 886 { 887 888 printf ("ImageDescription: "); 889 890 DumpString (fImageDescription); 891 892 printf ("\n"); 893 894 } 895 896 #endif 897 898 break; 899 900 } 901 902 case tcMake: 903 { 904 905 CheckTagType (parentCode, tagCode, tagType, ttAscii); 906 907 ParseStringTag (stream, 908 parentCode, 909 tagCode, 910 tagCount, 911 fMake); 912 913 #if qDNGValidate 914 915 if (gVerbose) 916 { 917 918 printf ("Make: "); 919 920 DumpString (fMake); 921 922 printf ("\n"); 923 924 } 925 926 #endif 927 928 break; 929 930 } 931 932 case tcModel: 933 { 934 935 CheckTagType (parentCode, tagCode, tagType, ttAscii); 936 937 ParseStringTag (stream, 938 parentCode, 939 tagCode, 940 tagCount, 941 fModel); 942 943 #if qDNGValidate 944 945 if (gVerbose) 946 { 947 948 printf ("Model: "); 949 950 DumpString (fModel); 951 952 printf ("\n"); 953 954 } 955 956 #endif 957 958 break; 959 960 } 961 962 case tcSoftware: 963 { 964 965 CheckTagType (parentCode, tagCode, tagType, ttAscii); 966 967 ParseStringTag (stream, 968 parentCode, 969 tagCode, 970 tagCount, 971 fSoftware); 972 973 #if qDNGValidate 974 975 if (gVerbose) 976 { 977 978 printf ("Software: "); 979 980 DumpString (fSoftware); 981 982 printf ("\n"); 983 984 } 985 986 #endif 987 988 break; 989 990 } 991 992 case tcDateTime: 993 { 994 995 uint64 tagPosition = stream.PositionInOriginalFile (); 996 997 dng_date_time dt; 998 999 if (!ParseDateTimeTag (stream, 1000 parentCode, 1001 tagCode, 1002 tagType, 1003 tagCount, 1004 dt)) 1005 { 1006 return false; 1007 } 1008 1009 fDateTime.SetDateTime (dt); 1010 1011 fDateTimeStorageInfo = dng_date_time_storage_info (tagPosition, 1012 dng_date_time_format_exif); 1013 1014 #if qDNGValidate 1015 1016 if (gVerbose) 1017 { 1018 1019 printf ("DateTime: "); 1020 1021 DumpDateTime (fDateTime.DateTime ()); 1022 1023 printf ("\n"); 1024 1025 } 1026 1027 #endif 1028 1029 break; 1030 1031 } 1032 1033 case tcArtist: 1034 { 1035 1036 CheckTagType (parentCode, tagCode, tagType, ttAscii); 1037 1038 ParseStringTag (stream, 1039 parentCode, 1040 tagCode, 1041 tagCount, 1042 fArtist); 1043 1044 #if qDNGValidate 1045 1046 if (gVerbose) 1047 { 1048 1049 printf ("Artist: "); 1050 1051 DumpString (fArtist); 1052 1053 printf ("\n"); 1054 1055 } 1056 1057 #endif 1058 1059 break; 1060 1061 } 1062 1063 case tcCopyright: 1064 { 1065 1066 CheckTagType (parentCode, tagCode, tagType, ttAscii); 1067 1068 ParseDualStringTag (stream, 1069 parentCode, 1070 tagCode, 1071 tagCount, 1072 fCopyright, 1073 fCopyright2); 1074 1075 #if qDNGValidate 1076 1077 if (gVerbose) 1078 { 1079 1080 printf ("Copyright: "); 1081 1082 DumpString (fCopyright); 1083 1084 if (fCopyright2.Get () [0] != 0) 1085 { 1086 1087 printf (" "); 1088 1089 DumpString (fCopyright2); 1090 1091 } 1092 1093 printf ("\n"); 1094 1095 } 1096 1097 #endif 1098 1099 break; 1100 1101 } 1102 1103 case tcTIFF_EP_StandardID: 1104 { 1105 1106 CheckTagType (parentCode, tagCode, tagType, ttByte); 1107 1108 CheckTagCount (parentCode, tagCode, tagCount, 4); 1109 1110 uint32 b0 = stream.Get_uint8 (); 1111 uint32 b1 = stream.Get_uint8 (); 1112 uint32 b2 = stream.Get_uint8 (); 1113 uint32 b3 = stream.Get_uint8 (); 1114 1115 fTIFF_EP_StandardID = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; 1116 1117 #if qDNGValidate 1118 1119 if (gVerbose) 1120 { 1121 printf ("TIFF/EPStandardID: %u.%u.%u.%u\n", 1122 (unsigned) b0, 1123 (unsigned) b1, 1124 (unsigned) b2, 1125 (unsigned) b3); 1126 } 1127 1128 #endif 1129 1130 break; 1131 1132 } 1133 1134 case tcCameraSerialNumber: 1135 case tcKodakCameraSerialNumber: // Kodak uses a very similar tag. 1136 { 1137 1138 CheckTagType (parentCode, tagCode, tagType, ttAscii); 1139 1140 ParseStringTag (stream, 1141 parentCode, 1142 tagCode, 1143 tagCount, 1144 fCameraSerialNumber); 1145 1146 #if qDNGValidate 1147 1148 if (gVerbose) 1149 { 1150 1151 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 1152 1153 DumpString (fCameraSerialNumber); 1154 1155 printf ("\n"); 1156 1157 } 1158 1159 #endif 1160 1161 break; 1162 1163 } 1164 1165 case tcLensInfo: 1166 { 1167 1168 CheckTagType (parentCode, tagCode, tagType, ttRational); 1169 1170 if (!CheckTagCount (parentCode, tagCode, tagCount, 4)) 1171 return false; 1172 1173 fLensInfo [0] = stream.TagValue_urational (tagType); 1174 fLensInfo [1] = stream.TagValue_urational (tagType); 1175 fLensInfo [2] = stream.TagValue_urational (tagType); 1176 fLensInfo [3] = stream.TagValue_urational (tagType); 1177 1178 // Some third party software wrote zero rather and undefined values 1179 // for unknown entries. Work around this bug. 1180 1181 for (uint32 j = 0; j < 4; j++) 1182 { 1183 1184 if (fLensInfo [j].IsValid () && fLensInfo [j].As_real64 () <= 0.0) 1185 { 1186 1187 fLensInfo [j] = dng_urational (0, 0); 1188 1189 #if qDNGValidate 1190 1191 ReportWarning ("Zero entry in LensInfo tag--should be undefined"); 1192 1193 #endif 1194 1195 } 1196 1197 } 1198 1199 #if qDNGValidate 1200 1201 if (gVerbose) 1202 { 1203 1204 printf ("LensInfo: "); 1205 1206 real64 minFL = fLensInfo [0].As_real64 (); 1207 real64 maxFL = fLensInfo [1].As_real64 (); 1208 1209 if (minFL == maxFL) 1210 printf ("%0.1f mm", minFL); 1211 else 1212 printf ("%0.1f-%0.1f mm", minFL, maxFL); 1213 1214 if (fLensInfo [2].d) 1215 { 1216 1217 real64 minFS = fLensInfo [2].As_real64 (); 1218 real64 maxFS = fLensInfo [3].As_real64 (); 1219 1220 if (minFS == maxFS) 1221 printf (" f/%0.1f", minFS); 1222 else 1223 printf (" f/%0.1f-%0.1f", minFS, maxFS); 1224 1225 } 1226 1227 printf ("\n"); 1228 1229 } 1230 1231 #endif 1232 1233 break; 1234 1235 } 1236 1237 default: 1238 { 1239 1240 return false; 1241 1242 } 1243 1244 } 1245 1246 return true; 1247 1248 } 1249 1250 /*****************************************************************************/ 1251 1252 // Parses tags that should only appear in IFD 0 or the main image IFD. 1253 1254 bool dng_exif::Parse_ifd0_main (dng_stream &stream, 1255 dng_shared & /* shared */, 1256 uint32 parentCode, 1257 uint32 tagCode, 1258 uint32 tagType, 1259 uint32 tagCount, 1260 uint64 /* tagOffset */) 1261 { 1262 1263 switch (tagCode) 1264 { 1265 1266 case tcFocalPlaneXResolution: 1267 { 1268 1269 CheckTagType (parentCode, tagCode, tagType, ttRational); 1270 1271 CheckTagCount (parentCode, tagCode, tagCount, 1); 1272 1273 fFocalPlaneXResolution = stream.TagValue_urational (tagType); 1274 1275 #if qDNGValidate 1276 1277 if (gVerbose) 1278 { 1279 1280 printf ("FocalPlaneXResolution: %0.4f\n", 1281 fFocalPlaneXResolution.As_real64 ()); 1282 1283 } 1284 1285 #endif 1286 1287 break; 1288 1289 } 1290 1291 case tcFocalPlaneYResolution: 1292 { 1293 1294 CheckTagType (parentCode, tagCode, tagType, ttRational); 1295 1296 CheckTagCount (parentCode, tagCode, tagCount, 1); 1297 1298 fFocalPlaneYResolution = stream.TagValue_urational (tagType); 1299 1300 #if qDNGValidate 1301 1302 if (gVerbose) 1303 { 1304 1305 printf ("FocalPlaneYResolution: %0.4f\n", 1306 fFocalPlaneYResolution.As_real64 ()); 1307 1308 } 1309 1310 #endif 1311 1312 break; 1313 1314 } 1315 1316 case tcFocalPlaneResolutionUnit: 1317 { 1318 1319 CheckTagType (parentCode, tagCode, tagType, ttShort); 1320 1321 CheckTagCount (parentCode, tagCode, tagCount, 1); 1322 1323 fFocalPlaneResolutionUnit = stream.TagValue_uint32 (tagType); 1324 1325 #if qDNGValidate 1326 1327 if (gVerbose) 1328 { 1329 1330 printf ("FocalPlaneResolutionUnit: %s\n", 1331 LookupResolutionUnit (fFocalPlaneResolutionUnit)); 1332 1333 } 1334 1335 #endif 1336 1337 break; 1338 1339 } 1340 1341 case tcSensingMethod: 1342 { 1343 1344 CheckTagType (parentCode, tagCode, tagType, ttShort); 1345 1346 CheckTagCount (parentCode, tagCode, tagCount, 1); 1347 1348 fSensingMethod = stream.TagValue_uint32 (tagType); 1349 1350 #if qDNGValidate 1351 1352 if (gVerbose) 1353 { 1354 1355 printf ("SensingMethod: %s\n", 1356 LookupSensingMethod (fSensingMethod)); 1357 1358 } 1359 1360 #endif 1361 1362 break; 1363 1364 } 1365 1366 default: 1367 { 1368 1369 return false; 1370 1371 } 1372 1373 } 1374 1375 return true; 1376 1377 } 1378 1379 /*****************************************************************************/ 1380 1381 // Parses tags that should only appear in IFD 0 or EXIF IFD. 1382 1383 bool dng_exif::Parse_ifd0_exif (dng_stream &stream, 1384 dng_shared & /* shared */, 1385 uint32 parentCode, 1386 uint32 tagCode, 1387 uint32 tagType, 1388 uint32 tagCount, 1389 uint64 /* tagOffset */) 1390 { 1391 1392 switch (tagCode) 1393 { 1394 1395 case tcBatteryLevel: 1396 { 1397 1398 CheckTagType (parentCode, tagCode, tagType, ttRational, ttAscii); 1399 1400 if (tagType == ttAscii) 1401 { 1402 1403 ParseStringTag (stream, 1404 parentCode, 1405 tagCode, 1406 tagCount, 1407 fBatteryLevelA); 1408 1409 } 1410 1411 else 1412 { 1413 1414 CheckTagCount (parentCode, tagCode, tagCount, 1); 1415 1416 fBatteryLevelR = stream.TagValue_urational (tagType); 1417 1418 } 1419 1420 #if qDNGValidate 1421 1422 if (gVerbose) 1423 { 1424 1425 printf ("BatteryLevel: "); 1426 1427 if (tagType == ttAscii) 1428 { 1429 1430 DumpString (fBatteryLevelA); 1431 1432 } 1433 1434 else 1435 { 1436 1437 printf ("%0.2f", fBatteryLevelR.As_real64 ()); 1438 1439 } 1440 1441 printf ("\n"); 1442 1443 } 1444 1445 #endif 1446 1447 break; 1448 1449 } 1450 1451 case tcExposureTime: 1452 { 1453 1454 CheckTagType (parentCode, tagCode, tagType, ttRational); 1455 1456 CheckTagCount (parentCode, tagCode, tagCount, 1); 1457 1458 dng_urational et = stream.TagValue_urational (tagType); 1459 1460 SetExposureTime (et.As_real64 (), true); 1461 1462 #if qDNGValidate 1463 1464 if (gVerbose) 1465 { 1466 1467 printf ("ExposureTime: "); 1468 1469 DumpExposureTime (et.As_real64 ()); 1470 1471 printf ("\n"); 1472 1473 } 1474 1475 if (et.As_real64 () <= 0.0) 1476 { 1477 1478 ReportWarning ("The ExposureTime is <= 0"); 1479 1480 } 1481 1482 #endif 1483 1484 break; 1485 1486 } 1487 1488 case tcFNumber: 1489 { 1490 1491 CheckTagType (parentCode, tagCode, tagType, ttRational); 1492 1493 CheckTagCount (parentCode, tagCode, tagCount, 1); 1494 1495 dng_urational fs = stream.TagValue_urational (tagType); 1496 1497 // Sometimes "unknown" is recorded as zero. 1498 1499 if (fs.As_real64 () <= 0.0) 1500 { 1501 fs.Clear (); 1502 } 1503 1504 #if qDNGValidate 1505 1506 if (gVerbose) 1507 { 1508 1509 printf ("FNumber: f/%0.2f\n", 1510 fs.As_real64 ()); 1511 1512 } 1513 1514 #endif 1515 1516 SetFNumber (fs.As_real64 ()); 1517 1518 break; 1519 1520 } 1521 1522 case tcExposureProgram: 1523 { 1524 1525 CheckTagType (parentCode, tagCode, tagType, ttShort); 1526 1527 CheckTagCount (parentCode, tagCode, tagCount, 1); 1528 1529 fExposureProgram = stream.TagValue_uint32 (tagType); 1530 1531 #if qDNGValidate 1532 1533 if (gVerbose) 1534 { 1535 1536 printf ("ExposureProgram: %s\n", 1537 LookupExposureProgram (fExposureProgram)); 1538 1539 } 1540 1541 #endif 1542 1543 break; 1544 1545 } 1546 1547 case tcISOSpeedRatings: 1548 { 1549 1550 CheckTagType (parentCode, tagCode, tagType, ttShort); 1551 1552 CheckTagCount (parentCode, tagCode, tagCount, 1, 3); 1553 1554 for (uint32 j = 0; j < tagCount && j < 3; j++) 1555 { 1556 1557 fISOSpeedRatings [j] = stream.TagValue_uint32 (tagType); 1558 1559 } 1560 1561 #if qDNGValidate 1562 1563 if (gVerbose) 1564 { 1565 1566 printf ("ISOSpeedRatings:"); 1567 1568 for (uint32 j = 0; j < tagCount && j < 3; j++) 1569 { 1570 1571 printf (" %u", (unsigned) fISOSpeedRatings [j]); 1572 1573 } 1574 1575 printf ("\n"); 1576 1577 } 1578 1579 #endif 1580 1581 break; 1582 1583 } 1584 1585 case tcSensitivityType: 1586 { 1587 1588 CheckTagType (parentCode, tagCode, tagType, ttShort); 1589 1590 CheckTagCount (parentCode, tagCode, tagCount, 1); 1591 1592 fSensitivityType = (uint32) stream.Get_uint16 (); 1593 1594 #if qDNGValidate 1595 1596 if (gVerbose) 1597 { 1598 1599 printf ("SensitivityType: %s\n", 1600 LookupSensitivityType (fSensitivityType)); 1601 1602 } 1603 1604 #endif 1605 1606 break; 1607 1608 } 1609 1610 case tcStandardOutputSensitivity: 1611 { 1612 1613 CheckTagType (parentCode, tagCode, tagType, ttLong); 1614 1615 CheckTagCount (parentCode, tagCode, tagCount, 1); 1616 1617 fStandardOutputSensitivity = stream.TagValue_uint32 (tagType); 1618 1619 #if qDNGValidate 1620 1621 if (gVerbose) 1622 { 1623 1624 printf ("StandardOutputSensitivity: %u\n", 1625 (unsigned) fStandardOutputSensitivity); 1626 1627 } 1628 1629 #endif 1630 1631 break; 1632 1633 } 1634 1635 case tcRecommendedExposureIndex: 1636 { 1637 1638 CheckTagType (parentCode, tagCode, tagType, ttLong); 1639 1640 CheckTagCount (parentCode, tagCode, tagCount, 1); 1641 1642 fRecommendedExposureIndex = stream.TagValue_uint32 (tagType); 1643 1644 #if qDNGValidate 1645 1646 if (gVerbose) 1647 { 1648 1649 printf ("RecommendedExposureIndex: %u\n", 1650 (unsigned) fRecommendedExposureIndex); 1651 1652 } 1653 1654 #endif 1655 1656 break; 1657 1658 } 1659 1660 case tcISOSpeed: 1661 { 1662 1663 CheckTagType (parentCode, tagCode, tagType, ttLong); 1664 1665 CheckTagCount (parentCode, tagCode, tagCount, 1); 1666 1667 fISOSpeed = stream.TagValue_uint32 (tagType); 1668 1669 #if qDNGValidate 1670 1671 if (gVerbose) 1672 { 1673 1674 printf ("ISOSpeed: %u\n", 1675 (unsigned) fISOSpeed); 1676 1677 } 1678 1679 #endif 1680 1681 break; 1682 1683 } 1684 1685 case tcISOSpeedLatitudeyyy: 1686 { 1687 1688 CheckTagType (parentCode, tagCode, tagType, ttLong); 1689 1690 CheckTagCount (parentCode, tagCode, tagCount, 1); 1691 1692 fISOSpeedLatitudeyyy = stream.TagValue_uint32 (tagType); 1693 1694 #if qDNGValidate 1695 1696 if (gVerbose) 1697 { 1698 1699 printf ("ISOSpeedLatitudeyyy: %u\n", 1700 (unsigned) fISOSpeedLatitudeyyy); 1701 1702 } 1703 1704 #endif 1705 1706 break; 1707 1708 } 1709 1710 case tcISOSpeedLatitudezzz: 1711 { 1712 1713 CheckTagType (parentCode, tagCode, tagType, ttLong); 1714 1715 CheckTagCount (parentCode, tagCode, tagCount, 1); 1716 1717 fISOSpeedLatitudezzz = stream.TagValue_uint32 (tagType); 1718 1719 #if qDNGValidate 1720 1721 if (gVerbose) 1722 { 1723 1724 printf ("ISOSpeedLatitudezzz: %u\n", 1725 (unsigned) fISOSpeedLatitudezzz); 1726 1727 } 1728 1729 #endif 1730 1731 break; 1732 1733 } 1734 1735 case tcTimeZoneOffset: 1736 { 1737 1738 CheckTagType (parentCode, tagCode, tagType, ttSShort); 1739 1740 CheckTagCount (parentCode, tagCode, tagCount, 1, 2); 1741 1742 dng_time_zone zoneOriginal; 1743 1744 zoneOriginal.SetOffsetHours (stream.TagValue_int32 (tagType)); 1745 1746 fDateTimeOriginal.SetZone (zoneOriginal); 1747 1748 #if 0 // MWG: Not filling in time zones unless we are sure. 1749 1750 // Note that there is no "TimeZoneOffsetDigitized" field, so 1751 // we assume the same tone zone as the original. 1752 1753 fDateTimeDigitized.SetZone (zoneOriginal); 1754 1755 #endif 1756 1757 dng_time_zone zoneCurrent; 1758 1759 if (tagCount >= 2) 1760 { 1761 1762 zoneCurrent.SetOffsetHours (stream.TagValue_int32 (tagType)); 1763 1764 fDateTime.SetZone (zoneCurrent); 1765 1766 } 1767 1768 #if qDNGValidate 1769 1770 if (gVerbose) 1771 { 1772 1773 printf ("TimeZoneOffset: DateTimeOriginal = %d", 1774 (int) zoneOriginal.ExactHourOffset ()); 1775 1776 if (tagCount >= 2) 1777 { 1778 1779 printf (", DateTime = %d", 1780 (int) zoneCurrent.ExactHourOffset ()); 1781 1782 } 1783 1784 printf ("\n"); 1785 1786 } 1787 1788 #endif 1789 1790 break; 1791 1792 } 1793 1794 case tcSelfTimerMode: 1795 { 1796 1797 CheckTagType (parentCode, tagCode, tagType, ttShort); 1798 1799 CheckTagCount (parentCode, tagCode, tagCount, 1); 1800 1801 fSelfTimerMode = stream.TagValue_uint32 (tagType); 1802 1803 #if qDNGValidate 1804 1805 if (gVerbose) 1806 { 1807 1808 printf ("SelfTimerMode: "); 1809 1810 if (fSelfTimerMode) 1811 { 1812 1813 printf ("%u sec", (unsigned) fSelfTimerMode); 1814 1815 } 1816 1817 else 1818 { 1819 1820 printf ("Off"); 1821 1822 } 1823 1824 printf ("\n"); 1825 1826 } 1827 1828 #endif 1829 1830 break; 1831 1832 } 1833 1834 case tcExifVersion: 1835 { 1836 1837 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 1838 1839 CheckTagCount (parentCode, tagCode, tagCount, 4); 1840 1841 uint32 b0 = stream.Get_uint8 (); 1842 uint32 b1 = stream.Get_uint8 (); 1843 uint32 b2 = stream.Get_uint8 (); 1844 uint32 b3 = stream.Get_uint8 (); 1845 1846 fExifVersion = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; 1847 1848 #if qDNGValidate 1849 1850 if (gVerbose) 1851 { 1852 1853 real64 x = (b0 - '0') * 10.00 + 1854 (b1 - '0') * 1.00 + 1855 (b2 - '0') * 0.10 + 1856 (b3 - '0') * 0.01; 1857 1858 printf ("ExifVersion: %0.2f\n", x); 1859 1860 } 1861 1862 #endif 1863 1864 break; 1865 1866 } 1867 1868 case tcDateTimeOriginal: 1869 { 1870 1871 uint64 tagPosition = stream.PositionInOriginalFile (); 1872 1873 dng_date_time dt; 1874 1875 if (!ParseDateTimeTag (stream, 1876 parentCode, 1877 tagCode, 1878 tagType, 1879 tagCount, 1880 dt)) 1881 { 1882 return false; 1883 } 1884 1885 fDateTimeOriginal.SetDateTime (dt); 1886 1887 fDateTimeOriginalStorageInfo = dng_date_time_storage_info (tagPosition, 1888 dng_date_time_format_exif); 1889 1890 #if qDNGValidate 1891 1892 if (gVerbose) 1893 { 1894 1895 printf ("DateTimeOriginal: "); 1896 1897 DumpDateTime (fDateTimeOriginal.DateTime ()); 1898 1899 printf ("\n"); 1900 1901 } 1902 1903 #endif 1904 1905 break; 1906 1907 } 1908 1909 case tcDateTimeDigitized: 1910 { 1911 1912 uint64 tagPosition = stream.PositionInOriginalFile (); 1913 1914 dng_date_time dt; 1915 1916 if (!ParseDateTimeTag (stream, 1917 parentCode, 1918 tagCode, 1919 tagType, 1920 tagCount, 1921 dt)) 1922 { 1923 return false; 1924 } 1925 1926 fDateTimeDigitized.SetDateTime (dt); 1927 1928 fDateTimeDigitizedStorageInfo = dng_date_time_storage_info (tagPosition, 1929 dng_date_time_format_exif); 1930 1931 #if qDNGValidate 1932 1933 if (gVerbose) 1934 { 1935 1936 printf ("DateTimeDigitized: "); 1937 1938 DumpDateTime (fDateTimeDigitized.DateTime ()); 1939 1940 printf ("\n"); 1941 1942 } 1943 1944 #endif 1945 1946 break; 1947 1948 } 1949 1950 case tcComponentsConfiguration: 1951 { 1952 1953 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 1954 1955 CheckTagCount (parentCode, tagCode, tagCount, 4); 1956 1957 uint32 b0 = stream.Get_uint8 (); 1958 uint32 b1 = stream.Get_uint8 (); 1959 uint32 b2 = stream.Get_uint8 (); 1960 uint32 b3 = stream.Get_uint8 (); 1961 1962 fComponentsConfiguration = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; 1963 1964 #if qDNGValidate 1965 1966 if (gVerbose) 1967 { 1968 1969 printf ("ComponentsConfiguration: %s %s %s %s\n", 1970 LookupComponent (b0), 1971 LookupComponent (b1), 1972 LookupComponent (b2), 1973 LookupComponent (b3)); 1974 1975 } 1976 1977 #endif 1978 1979 break; 1980 1981 } 1982 1983 case tcCompressedBitsPerPixel: 1984 { 1985 1986 CheckTagType (parentCode, tagCode, tagType, ttRational); 1987 1988 CheckTagCount (parentCode, tagCode, tagCount, 1); 1989 1990 fCompresssedBitsPerPixel = stream.TagValue_urational (tagType); 1991 1992 #if qDNGValidate 1993 1994 if (gVerbose) 1995 { 1996 1997 printf ("CompressedBitsPerPixel: %0.2f\n", 1998 fCompresssedBitsPerPixel.As_real64 ()); 1999 2000 } 2001 2002 #endif 2003 2004 break; 2005 2006 } 2007 2008 case tcShutterSpeedValue: 2009 { 2010 2011 CheckTagType (parentCode, tagCode, tagType, ttSRational); 2012 2013 CheckTagCount (parentCode, tagCode, tagCount, 1); 2014 2015 dng_srational ss = stream.TagValue_srational (tagType); 2016 2017 #if qDNGValidate 2018 2019 if (gVerbose) 2020 { 2021 2022 printf ("ShutterSpeedValue: "); 2023 2024 real64 x = pow (2.0, -ss.As_real64 ()); 2025 2026 DumpExposureTime (x); 2027 2028 printf ("\n"); 2029 2030 } 2031 2032 // The ExposureTime and ShutterSpeedValue tags should be consistent. 2033 2034 if (fExposureTime.IsValid ()) 2035 { 2036 2037 real64 et = fExposureTime.As_real64 (); 2038 2039 real64 tv1 = -1.0 * log (et) / log (2.0); 2040 2041 real64 tv2 = ss.As_real64 (); 2042 2043 // Make sure they are within 0.25 APEX values. 2044 2045 if (Abs_real64 (tv1 - tv2) > 0.25) 2046 { 2047 2048 ReportWarning ("The ExposureTime and ShutterSpeedValue tags have conflicting values"); 2049 2050 } 2051 2052 } 2053 2054 #endif 2055 2056 SetShutterSpeedValue (ss.As_real64 ()); 2057 2058 break; 2059 2060 } 2061 2062 case tcApertureValue: 2063 { 2064 2065 CheckTagType (parentCode, tagCode, tagType, ttRational); 2066 2067 CheckTagCount (parentCode, tagCode, tagCount, 1); 2068 2069 dng_urational av = stream.TagValue_urational (tagType); 2070 2071 #if qDNGValidate 2072 2073 if (gVerbose) 2074 { 2075 2076 real64 x = pow (2.0, 0.5 * av.As_real64 ()); 2077 2078 printf ("ApertureValue: f/%0.2f\n", x); 2079 2080 } 2081 2082 // The FNumber and ApertureValue tags should be consistent. 2083 2084 if (fFNumber.IsValid () && av.IsValid ()) 2085 { 2086 2087 real64 fs = fFNumber.As_real64 (); 2088 2089 real64 av1 = FNumberToApertureValue (fs); 2090 2091 real64 av2 = av.As_real64 (); 2092 2093 if (Abs_real64 (av1 - av2) > 0.25) 2094 { 2095 2096 ReportWarning ("The FNumber and ApertureValue tags have conflicting values"); 2097 2098 } 2099 2100 } 2101 2102 #endif 2103 2104 SetApertureValue (av.As_real64 ()); 2105 2106 break; 2107 2108 } 2109 2110 case tcBrightnessValue: 2111 { 2112 2113 CheckTagType (parentCode, tagCode, tagType, ttSRational); 2114 2115 CheckTagCount (parentCode, tagCode, tagCount, 1); 2116 2117 fBrightnessValue = stream.TagValue_srational (tagType); 2118 2119 #if qDNGValidate 2120 2121 if (gVerbose) 2122 { 2123 2124 printf ("BrightnessValue: %0.2f\n", 2125 fBrightnessValue.As_real64 ()); 2126 2127 } 2128 2129 #endif 2130 2131 break; 2132 2133 } 2134 2135 case tcExposureBiasValue: 2136 { 2137 2138 CheckTagType (parentCode, tagCode, tagType, ttSRational); 2139 2140 CheckTagCount (parentCode, tagCode, tagCount, 1); 2141 2142 fExposureBiasValue = stream.TagValue_srational (tagType); 2143 2144 #if qDNGValidate 2145 2146 if (gVerbose) 2147 { 2148 2149 printf ("ExposureBiasValue: %0.2f\n", 2150 fExposureBiasValue.As_real64 ()); 2151 2152 } 2153 2154 #endif 2155 2156 break; 2157 2158 } 2159 2160 case tcMaxApertureValue: 2161 { 2162 2163 CheckTagType (parentCode, tagCode, tagType, ttRational); 2164 2165 CheckTagCount (parentCode, tagCode, tagCount, 1); 2166 2167 fMaxApertureValue = stream.TagValue_urational (tagType); 2168 2169 #if qDNGValidate 2170 2171 if (gVerbose) 2172 { 2173 2174 real64 x = pow (2.0, 0.5 * fMaxApertureValue.As_real64 ()); 2175 2176 printf ("MaxApertureValue: f/%0.1f\n", x); 2177 2178 } 2179 2180 #endif 2181 2182 break; 2183 2184 } 2185 2186 case tcSubjectDistance: 2187 { 2188 2189 CheckTagType (parentCode, tagCode, tagType, ttRational); 2190 2191 CheckTagCount (parentCode, tagCode, tagCount, 1); 2192 2193 fSubjectDistance = stream.TagValue_urational (tagType); 2194 2195 fApproxFocusDistance = fSubjectDistance; 2196 2197 #if qDNGValidate 2198 2199 if (gVerbose) 2200 { 2201 2202 printf ("SubjectDistance: %u/%u\n", 2203 (unsigned) fSubjectDistance.n, 2204 (unsigned) fSubjectDistance.d); 2205 2206 } 2207 2208 #endif 2209 2210 break; 2211 2212 } 2213 2214 case tcMeteringMode: 2215 { 2216 2217 CheckTagType (parentCode, tagCode, tagType, ttShort); 2218 2219 CheckTagCount (parentCode, tagCode, tagCount, 1); 2220 2221 fMeteringMode = stream.TagValue_uint32 (tagType); 2222 2223 #if qDNGValidate 2224 2225 if (gVerbose) 2226 { 2227 2228 printf ("MeteringMode: %s\n", 2229 LookupMeteringMode (fMeteringMode)); 2230 2231 } 2232 2233 #endif 2234 2235 break; 2236 2237 } 2238 2239 case tcLightSource: 2240 { 2241 2242 CheckTagType (parentCode, tagCode, tagType, ttShort); 2243 2244 CheckTagCount (parentCode, tagCode, tagCount, 1); 2245 2246 fLightSource = stream.TagValue_uint32 (tagType); 2247 2248 #if qDNGValidate 2249 2250 if (gVerbose) 2251 { 2252 2253 printf ("LightSource: %s\n", 2254 LookupLightSource (fLightSource)); 2255 2256 } 2257 2258 #endif 2259 2260 break; 2261 2262 } 2263 2264 case tcFlash: 2265 { 2266 2267 CheckTagType (parentCode, tagCode, tagType, ttShort); 2268 2269 CheckTagCount (parentCode, tagCode, tagCount, 1); 2270 2271 fFlash = stream.TagValue_uint32 (tagType); 2272 2273 #if qDNGValidate 2274 2275 if (gVerbose) 2276 { 2277 2278 printf ("Flash: %u\n", (unsigned) fFlash); 2279 2280 if ((fFlash >> 5) & 1) 2281 { 2282 printf (" No flash function\n"); 2283 } 2284 2285 else 2286 { 2287 2288 if (fFlash & 0x1) 2289 { 2290 2291 printf (" Flash fired\n"); 2292 2293 switch ((fFlash >> 1) & 0x3) 2294 { 2295 2296 case 2: 2297 printf (" Strobe return light not detected\n"); 2298 break; 2299 2300 case 3: 2301 printf (" Strobe return light detected\n"); 2302 break; 2303 2304 } 2305 2306 } 2307 2308 else 2309 { 2310 printf (" Flash did not fire\n"); 2311 } 2312 2313 switch ((fFlash >> 3) & 0x3) 2314 { 2315 2316 case 1: 2317 printf (" Compulsory flash firing\n"); 2318 break; 2319 2320 case 2: 2321 printf (" Compulsory flash suppression\n"); 2322 break; 2323 2324 case 3: 2325 printf (" Auto mode\n"); 2326 break; 2327 2328 } 2329 2330 if ((fFlash >> 6) & 1) 2331 { 2332 printf (" Red-eye reduction supported\n"); 2333 } 2334 2335 } 2336 2337 } 2338 2339 #endif 2340 2341 break; 2342 2343 } 2344 2345 case tcFocalLength: 2346 { 2347 2348 CheckTagType (parentCode, tagCode, tagType, ttRational); 2349 2350 CheckTagCount (parentCode, tagCode, tagCount, 1); 2351 2352 fFocalLength = stream.TagValue_urational (tagType); 2353 2354 // Sometimes "unknown" is recorded as zero. 2355 2356 if (fFocalLength.As_real64 () <= 0.0) 2357 { 2358 fFocalLength.Clear (); 2359 } 2360 2361 #if qDNGValidate 2362 2363 if (gVerbose) 2364 { 2365 2366 printf ("FocalLength: %0.1f mm\n", 2367 fFocalLength.As_real64 ()); 2368 2369 } 2370 2371 #endif 2372 2373 break; 2374 2375 } 2376 2377 case tcImageNumber: 2378 { 2379 2380 CheckTagType (parentCode, tagCode, tagType, ttShort, ttLong); 2381 2382 CheckTagCount (parentCode, tagCode, tagCount, 1); 2383 2384 fImageNumber = stream.TagValue_uint32 (tagType); 2385 2386 #if qDNGValidate 2387 2388 if (gVerbose) 2389 { 2390 printf ("ImageNumber: %u\n", (unsigned) fImageNumber); 2391 } 2392 2393 #endif 2394 2395 break; 2396 2397 } 2398 2399 case tcExposureIndex: 2400 case tcExposureIndexExif: 2401 { 2402 2403 CheckTagType (parentCode, tagCode, tagType, ttRational); 2404 2405 CheckTagCount (parentCode, tagCode, tagCount, 1); 2406 2407 fExposureIndex = stream.TagValue_urational (tagType); 2408 2409 #if qDNGValidate 2410 2411 if (gVerbose) 2412 { 2413 2414 printf ("%s: ISO %0.1f\n", 2415 LookupTagCode (parentCode, tagCode), 2416 fExposureIndex.As_real64 ()); 2417 2418 } 2419 2420 #endif 2421 2422 break; 2423 2424 } 2425 2426 case tcUserComment: 2427 { 2428 2429 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 2430 2431 ParseEncodedStringTag (stream, 2432 parentCode, 2433 tagCode, 2434 tagCount, 2435 fUserComment); 2436 2437 #if qDNGValidate 2438 2439 if (gVerbose) 2440 { 2441 2442 printf ("UserComment: "); 2443 2444 DumpString (fUserComment); 2445 2446 printf ("\n"); 2447 2448 } 2449 2450 #endif 2451 2452 break; 2453 2454 } 2455 2456 case tcSubsecTime: 2457 { 2458 2459 CheckTagType (parentCode, tagCode, tagType, ttAscii); 2460 2461 dng_string subsecs; 2462 2463 ParseStringTag (stream, 2464 parentCode, 2465 tagCode, 2466 tagCount, 2467 subsecs); 2468 2469 fDateTime.SetSubseconds (subsecs); 2470 2471 #if qDNGValidate 2472 2473 if (gVerbose) 2474 { 2475 2476 printf ("SubsecTime: "); 2477 2478 DumpString (subsecs); 2479 2480 printf ("\n"); 2481 2482 } 2483 2484 #endif 2485 2486 break; 2487 2488 } 2489 2490 case tcSubsecTimeOriginal: 2491 { 2492 2493 CheckTagType (parentCode, tagCode, tagType, ttAscii); 2494 2495 dng_string subsecs; 2496 2497 ParseStringTag (stream, 2498 parentCode, 2499 tagCode, 2500 tagCount, 2501 subsecs); 2502 2503 fDateTimeOriginal.SetSubseconds (subsecs); 2504 2505 #if qDNGValidate 2506 2507 if (gVerbose) 2508 { 2509 2510 printf ("SubsecTimeOriginal: "); 2511 2512 DumpString (subsecs); 2513 2514 printf ("\n"); 2515 2516 } 2517 2518 #endif 2519 2520 break; 2521 2522 } 2523 2524 case tcSubsecTimeDigitized: 2525 { 2526 2527 CheckTagType (parentCode, tagCode, tagType, ttAscii); 2528 2529 dng_string subsecs; 2530 2531 ParseStringTag (stream, 2532 parentCode, 2533 tagCode, 2534 tagCount, 2535 subsecs); 2536 2537 fDateTimeDigitized.SetSubseconds (subsecs); 2538 2539 #if qDNGValidate 2540 2541 if (gVerbose) 2542 { 2543 2544 printf ("SubsecTimeDigitized: "); 2545 2546 DumpString (subsecs); 2547 2548 printf ("\n"); 2549 2550 } 2551 2552 #endif 2553 2554 break; 2555 2556 } 2557 2558 case tcFlashPixVersion: 2559 { 2560 2561 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 2562 2563 CheckTagCount (parentCode, tagCode, tagCount, 4); 2564 2565 uint32 b0 = stream.Get_uint8 (); 2566 uint32 b1 = stream.Get_uint8 (); 2567 uint32 b2 = stream.Get_uint8 (); 2568 uint32 b3 = stream.Get_uint8 (); 2569 2570 fFlashPixVersion = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; 2571 2572 #if qDNGValidate 2573 2574 if (gVerbose) 2575 { 2576 2577 real64 x = (b0 - '0') * 10.00 + 2578 (b1 - '0') * 1.00 + 2579 (b2 - '0') * 0.10 + 2580 (b3 - '0') * 0.01; 2581 2582 printf ("FlashPixVersion: %0.2f\n", x); 2583 2584 } 2585 2586 #endif 2587 2588 break; 2589 2590 } 2591 2592 case tcColorSpace: 2593 { 2594 2595 CheckTagType (parentCode, tagCode, tagType, ttShort); 2596 2597 CheckTagCount (parentCode, tagCode, tagCount, 1); 2598 2599 fColorSpace = stream.TagValue_uint32 (tagType); 2600 2601 #if qDNGValidate 2602 2603 if (gVerbose) 2604 { 2605 2606 printf ("ColorSpace: %s\n", 2607 LookupColorSpace (fColorSpace)); 2608 2609 } 2610 2611 #endif 2612 2613 break; 2614 2615 } 2616 2617 case tcPixelXDimension: 2618 { 2619 2620 CheckTagType (parentCode, tagCode, tagType, ttShort, ttLong); 2621 2622 CheckTagCount (parentCode, tagCode, tagCount, 1); 2623 2624 fPixelXDimension = stream.TagValue_uint32 (tagType); 2625 2626 #if qDNGValidate 2627 2628 if (gVerbose) 2629 { 2630 printf ("PixelXDimension: %u\n", (unsigned) fPixelXDimension); 2631 } 2632 2633 #endif 2634 2635 break; 2636 2637 } 2638 2639 case tcPixelYDimension: 2640 { 2641 2642 CheckTagType (parentCode, tagCode, tagType, ttShort, ttLong); 2643 2644 CheckTagCount (parentCode, tagCode, tagCount, 1); 2645 2646 fPixelYDimension = stream.TagValue_uint32 (tagType); 2647 2648 #if qDNGValidate 2649 2650 if (gVerbose) 2651 { 2652 printf ("PixelYDimension: %u\n", (unsigned) fPixelYDimension); 2653 } 2654 2655 #endif 2656 2657 break; 2658 2659 } 2660 2661 case tcFocalPlaneXResolutionExif: 2662 { 2663 2664 CheckTagType (parentCode, tagCode, tagType, ttRational); 2665 2666 CheckTagCount (parentCode, tagCode, tagCount, 1); 2667 2668 fFocalPlaneXResolution = stream.TagValue_urational (tagType); 2669 2670 #if qDNGValidate 2671 2672 if (gVerbose) 2673 { 2674 2675 printf ("FocalPlaneXResolutionExif: %0.4f\n", 2676 fFocalPlaneXResolution.As_real64 ()); 2677 2678 } 2679 2680 #endif 2681 2682 break; 2683 2684 } 2685 2686 case tcFocalPlaneYResolutionExif: 2687 { 2688 2689 CheckTagType (parentCode, tagCode, tagType, ttRational); 2690 2691 CheckTagCount (parentCode, tagCode, tagCount, 1); 2692 2693 fFocalPlaneYResolution = stream.TagValue_urational (tagType); 2694 2695 #if qDNGValidate 2696 2697 if (gVerbose) 2698 { 2699 2700 printf ("FocalPlaneYResolutionExif: %0.4f\n", 2701 fFocalPlaneYResolution.As_real64 ()); 2702 2703 } 2704 2705 #endif 2706 2707 break; 2708 2709 } 2710 2711 case tcFocalPlaneResolutionUnitExif: 2712 { 2713 2714 CheckTagType (parentCode, tagCode, tagType, ttShort); 2715 2716 CheckTagCount (parentCode, tagCode, tagCount, 1); 2717 2718 fFocalPlaneResolutionUnit = stream.TagValue_uint32 (tagType); 2719 2720 #if qDNGValidate 2721 2722 if (gVerbose) 2723 { 2724 2725 printf ("FocalPlaneResolutionUnitExif: %s\n", 2726 LookupResolutionUnit (fFocalPlaneResolutionUnit)); 2727 2728 } 2729 2730 #endif 2731 2732 break; 2733 2734 } 2735 2736 case tcSensingMethodExif: 2737 { 2738 2739 CheckTagType (parentCode, tagCode, tagType, ttShort); 2740 2741 CheckTagCount (parentCode, tagCode, tagCount, 1); 2742 2743 fSensingMethod = stream.TagValue_uint32 (tagType); 2744 2745 #if qDNGValidate 2746 2747 if (gVerbose) 2748 { 2749 2750 printf ("SensingMethodExif: %s\n", 2751 LookupSensingMethod (fSensingMethod)); 2752 2753 } 2754 2755 #endif 2756 2757 break; 2758 2759 } 2760 2761 case tcFileSource: 2762 { 2763 2764 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 2765 2766 CheckTagCount (parentCode, tagCode, tagCount, 1); 2767 2768 fFileSource = stream.Get_uint8 (); 2769 2770 #if qDNGValidate 2771 2772 if (gVerbose) 2773 { 2774 2775 printf ("FileSource: %s\n", 2776 LookupFileSource (fFileSource)); 2777 2778 } 2779 2780 #endif 2781 2782 break; 2783 2784 } 2785 2786 case tcSceneType: 2787 { 2788 2789 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 2790 2791 CheckTagCount (parentCode, tagCode, tagCount, 1); 2792 2793 fSceneType = stream.Get_uint8 (); 2794 2795 #if qDNGValidate 2796 2797 if (gVerbose) 2798 { 2799 2800 printf ("SceneType: %s\n", 2801 LookupSceneType (fSceneType)); 2802 2803 } 2804 2805 #endif 2806 2807 break; 2808 2809 } 2810 2811 case tcCFAPatternExif: 2812 { 2813 2814 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 2815 2816 if (tagCount <= 4) 2817 { 2818 return false; 2819 } 2820 2821 uint32 cols = stream.Get_uint16 (); 2822 uint32 rows = stream.Get_uint16 (); 2823 2824 if (tagCount != 4 + cols * rows) 2825 { 2826 return false; 2827 } 2828 2829 if (cols < 1 || cols > kMaxCFAPattern || 2830 rows < 1 || rows > kMaxCFAPattern) 2831 { 2832 return false; 2833 } 2834 2835 fCFARepeatPatternCols = cols; 2836 fCFARepeatPatternRows = rows; 2837 2838 // Note that the Exif spec stores this array in a different 2839 // scan order than the TIFF-EP spec. 2840 2841 for (uint32 j = 0; j < fCFARepeatPatternCols; j++) 2842 for (uint32 k = 0; k < fCFARepeatPatternRows; k++) 2843 { 2844 2845 fCFAPattern [k] [j] = stream.Get_uint8 (); 2846 2847 } 2848 2849 #if qDNGValidate 2850 2851 if (gVerbose) 2852 { 2853 2854 printf ("CFAPatternExif:\n"); 2855 2856 for (uint32 j = 0; j < fCFARepeatPatternRows; j++) 2857 { 2858 2859 int32 spaces = 4; 2860 2861 for (uint32 k = 0; k < fCFARepeatPatternCols; k++) 2862 { 2863 2864 while (spaces-- > 0) 2865 { 2866 printf (" "); 2867 } 2868 2869 const char *name = LookupCFAColor (fCFAPattern [j] [k]); 2870 2871 spaces = 9 - (int32) strlen (name); 2872 2873 printf ("%s", name); 2874 2875 } 2876 2877 printf ("\n"); 2878 2879 } 2880 2881 } 2882 2883 #endif 2884 2885 break; 2886 2887 } 2888 2889 case tcCustomRendered: 2890 { 2891 2892 CheckTagType (parentCode, tagCode, tagType, ttShort); 2893 2894 CheckTagCount (parentCode, tagCode, tagCount, 1); 2895 2896 fCustomRendered = stream.TagValue_uint32 (tagType); 2897 2898 #if qDNGValidate 2899 2900 if (gVerbose) 2901 { 2902 2903 printf ("CustomRendered: %s\n", 2904 LookupCustomRendered (fCustomRendered)); 2905 2906 } 2907 2908 #endif 2909 2910 break; 2911 2912 } 2913 2914 case tcExposureMode: 2915 { 2916 2917 CheckTagType (parentCode, tagCode, tagType, ttShort); 2918 2919 CheckTagCount (parentCode, tagCode, tagCount, 1); 2920 2921 fExposureMode = stream.TagValue_uint32 (tagType); 2922 2923 #if qDNGValidate 2924 2925 if (gVerbose) 2926 { 2927 2928 printf ("ExposureMode: %s\n", 2929 LookupExposureMode (fExposureMode)); 2930 2931 } 2932 2933 #endif 2934 2935 break; 2936 2937 } 2938 2939 case tcWhiteBalance: 2940 { 2941 2942 CheckTagType (parentCode, tagCode, tagType, ttShort); 2943 2944 CheckTagCount (parentCode, tagCode, tagCount, 1); 2945 2946 fWhiteBalance = stream.TagValue_uint32 (tagType); 2947 2948 #if qDNGValidate 2949 2950 if (gVerbose) 2951 { 2952 2953 printf ("WhiteBalance: %s\n", 2954 LookupWhiteBalance (fWhiteBalance)); 2955 2956 } 2957 2958 #endif 2959 2960 break; 2961 2962 } 2963 2964 case tcDigitalZoomRatio: 2965 { 2966 2967 CheckTagType (parentCode, tagCode, tagType, ttRational); 2968 2969 CheckTagCount (parentCode, tagCode, tagCount, 1); 2970 2971 fDigitalZoomRatio = stream.TagValue_urational (tagType); 2972 2973 #if qDNGValidate 2974 2975 if (gVerbose) 2976 { 2977 2978 printf ("DigitalZoomRatio: "); 2979 2980 if (fDigitalZoomRatio.n == 0 || 2981 fDigitalZoomRatio.d == 0) 2982 { 2983 2984 printf ("Not used\n"); 2985 2986 } 2987 2988 else 2989 { 2990 2991 printf ("%0.2f\n", fDigitalZoomRatio.As_real64 ()); 2992 2993 } 2994 2995 } 2996 2997 #endif 2998 2999 break; 3000 3001 } 3002 3003 case tcFocalLengthIn35mmFilm: 3004 { 3005 3006 CheckTagType (parentCode, tagCode, tagType, ttShort); 3007 3008 CheckTagCount (parentCode, tagCode, tagCount, 1); 3009 3010 fFocalLengthIn35mmFilm = stream.TagValue_uint32 (tagType); 3011 3012 #if qDNGValidate 3013 3014 if (gVerbose) 3015 { 3016 3017 printf ("FocalLengthIn35mmFilm: %u mm\n", 3018 (unsigned) fFocalLengthIn35mmFilm); 3019 3020 } 3021 3022 #endif 3023 3024 break; 3025 3026 } 3027 3028 case tcSceneCaptureType: 3029 { 3030 3031 CheckTagType (parentCode, tagCode, tagType, ttShort); 3032 3033 CheckTagCount (parentCode, tagCode, tagCount, 1); 3034 3035 fSceneCaptureType = stream.TagValue_uint32 (tagType); 3036 3037 #if qDNGValidate 3038 3039 if (gVerbose) 3040 { 3041 3042 printf ("SceneCaptureType: %s\n", 3043 LookupSceneCaptureType (fSceneCaptureType)); 3044 3045 } 3046 3047 #endif 3048 3049 break; 3050 3051 } 3052 3053 case tcGainControl: 3054 { 3055 3056 CheckTagType (parentCode, tagCode, tagType, ttShort); 3057 3058 CheckTagCount (parentCode, tagCode, tagCount, 1); 3059 3060 fGainControl = stream.TagValue_uint32 (tagType); 3061 3062 #if qDNGValidate 3063 3064 if (gVerbose) 3065 { 3066 3067 printf ("GainControl: %s\n", 3068 LookupGainControl (fGainControl)); 3069 3070 } 3071 3072 #endif 3073 3074 break; 3075 3076 } 3077 3078 case tcContrast: 3079 { 3080 3081 CheckTagType (parentCode, tagCode, tagType, ttShort); 3082 3083 CheckTagCount (parentCode, tagCode, tagCount, 1); 3084 3085 fContrast = stream.TagValue_uint32 (tagType); 3086 3087 #if qDNGValidate 3088 3089 if (gVerbose) 3090 { 3091 3092 printf ("Contrast: %s\n", 3093 LookupContrast (fContrast)); 3094 3095 } 3096 3097 #endif 3098 3099 break; 3100 3101 } 3102 3103 case tcSaturation: 3104 { 3105 3106 CheckTagType (parentCode, tagCode, tagType, ttShort); 3107 3108 CheckTagCount (parentCode, tagCode, tagCount, 1); 3109 3110 fSaturation = stream.TagValue_uint32 (tagType); 3111 3112 #if qDNGValidate 3113 3114 if (gVerbose) 3115 { 3116 3117 printf ("Saturation: %s\n", 3118 LookupSaturation (fSaturation)); 3119 3120 } 3121 3122 #endif 3123 3124 break; 3125 3126 } 3127 3128 case tcSharpness: 3129 { 3130 3131 CheckTagType (parentCode, tagCode, tagType, ttShort); 3132 3133 CheckTagCount (parentCode, tagCode, tagCount, 1); 3134 3135 fSharpness = stream.TagValue_uint32 (tagType); 3136 3137 #if qDNGValidate 3138 3139 if (gVerbose) 3140 { 3141 3142 printf ("Sharpness: %s\n", 3143 LookupSharpness (fSharpness)); 3144 3145 } 3146 3147 #endif 3148 3149 break; 3150 3151 } 3152 3153 case tcSubjectDistanceRange: 3154 { 3155 3156 CheckTagType (parentCode, tagCode, tagType, ttShort); 3157 3158 CheckTagCount (parentCode, tagCode, tagCount, 1); 3159 3160 fSubjectDistanceRange = stream.TagValue_uint32 (tagType); 3161 3162 #if qDNGValidate 3163 3164 if (gVerbose) 3165 { 3166 3167 printf ("SubjectDistanceRange: %s\n", 3168 LookupSubjectDistanceRange (fSubjectDistanceRange)); 3169 3170 } 3171 3172 #endif 3173 3174 break; 3175 3176 } 3177 3178 case tcSubjectArea: 3179 case tcSubjectLocation: 3180 { 3181 3182 CheckTagType (parentCode, tagCode, tagType, ttShort); 3183 3184 if (!CheckTagCount (parentCode, tagCode, tagCount, 2, 4)) 3185 { 3186 return false; 3187 } 3188 3189 if (tagCode == tcSubjectLocation) 3190 { 3191 CheckTagCount (parentCode, tagCode, tagCount, 2); 3192 } 3193 3194 fSubjectAreaCount = tagCount; 3195 3196 for (uint32 j = 0; j < tagCount; j++) 3197 { 3198 3199 fSubjectArea [j] = stream.TagValue_uint32 (tagType); 3200 3201 } 3202 3203 #if qDNGValidate 3204 3205 if (gVerbose) 3206 { 3207 3208 printf ("%s:", LookupTagCode (parentCode, tagCode)); 3209 3210 for (uint32 j = 0; j < fSubjectAreaCount; j++) 3211 { 3212 3213 printf (" %u", (unsigned) fSubjectArea [j]); 3214 3215 } 3216 3217 printf ("\n"); 3218 3219 } 3220 3221 #endif 3222 3223 break; 3224 3225 } 3226 3227 case tcGamma: 3228 { 3229 3230 CheckTagType (parentCode, tagCode, tagType, ttRational); 3231 3232 CheckTagCount (parentCode, tagCode, tagCount, 1); 3233 3234 fGamma = stream.TagValue_urational (tagType); 3235 3236 #if qDNGValidate 3237 3238 if (gVerbose) 3239 { 3240 3241 printf ("Gamma: %0.2f\n", 3242 fGamma.As_real64 ()); 3243 3244 } 3245 3246 #endif 3247 3248 break; 3249 3250 } 3251 3252 case tcImageUniqueID: 3253 { 3254 3255 if (!CheckTagType (parentCode, tagCode, tagType, ttAscii)) 3256 return false; 3257 3258 if (!CheckTagCount (parentCode, tagCode, tagCount, 33)) 3259 return false; 3260 3261 dng_string s; 3262 3263 ParseStringTag (stream, 3264 parentCode, 3265 tagCode, 3266 tagCount, 3267 s); 3268 3269 if (s.Length () != 32) 3270 return false; 3271 3272 dng_fingerprint f; 3273 3274 for (uint32 j = 0; j < 32; j++) 3275 { 3276 3277 char c = ForceUppercase (s.Get () [j]); 3278 3279 uint32 digit; 3280 3281 if (c >= '0' && c <= '9') 3282 { 3283 digit = c - '0'; 3284 } 3285 3286 else if (c >= 'A' && c <= 'F') 3287 { 3288 digit = c - 'A' + 10; 3289 } 3290 3291 else 3292 return false; 3293 3294 f.data [j >> 1] *= 16; 3295 f.data [j >> 1] += (uint8) digit; 3296 3297 } 3298 3299 fImageUniqueID = f; 3300 3301 #if qDNGValidate 3302 3303 if (gVerbose) 3304 { 3305 3306 printf ("ImageUniqueID: "); 3307 3308 DumpFingerprint (fImageUniqueID); 3309 3310 printf ("\n"); 3311 3312 } 3313 3314 #endif 3315 3316 break; 3317 3318 } 3319 3320 case tcCameraOwnerNameExif: 3321 { 3322 3323 CheckTagType (parentCode, tagCode, tagType, ttAscii); 3324 3325 ParseStringTag (stream, 3326 parentCode, 3327 tagCode, 3328 tagCount, 3329 fOwnerName); 3330 3331 #if qDNGValidate 3332 3333 if (gVerbose) 3334 { 3335 3336 printf ("CameraOwnerName: "); 3337 3338 DumpString (fOwnerName); 3339 3340 printf ("\n"); 3341 3342 } 3343 3344 #endif 3345 3346 break; 3347 3348 } 3349 3350 case tcCameraSerialNumberExif: 3351 { 3352 3353 CheckTagType (parentCode, tagCode, tagType, ttAscii); 3354 3355 ParseStringTag (stream, 3356 parentCode, 3357 tagCode, 3358 tagCount, 3359 fCameraSerialNumber); 3360 3361 #if qDNGValidate 3362 3363 if (gVerbose) 3364 { 3365 3366 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 3367 3368 DumpString (fCameraSerialNumber); 3369 3370 printf ("\n"); 3371 3372 } 3373 3374 #endif 3375 3376 break; 3377 3378 } 3379 3380 case tcLensSpecificationExif: 3381 { 3382 3383 CheckTagType (parentCode, tagCode, tagType, ttRational); 3384 3385 if (!CheckTagCount (parentCode, tagCode, tagCount, 4)) 3386 return false; 3387 3388 fLensInfo [0] = stream.TagValue_urational (tagType); 3389 fLensInfo [1] = stream.TagValue_urational (tagType); 3390 fLensInfo [2] = stream.TagValue_urational (tagType); 3391 fLensInfo [3] = stream.TagValue_urational (tagType); 3392 3393 // Some third party software wrote zero rather than undefined values for 3394 // unknown entries. Work around this bug. 3395 3396 for (uint32 j = 0; j < 4; j++) 3397 { 3398 3399 if (fLensInfo [j].IsValid () && fLensInfo [j].As_real64 () <= 0.0) 3400 { 3401 3402 fLensInfo [j] = dng_urational (0, 0); 3403 3404 #if qDNGValidate 3405 3406 ReportWarning ("Zero entry in LensSpecification tag--should be undefined"); 3407 3408 #endif 3409 3410 } 3411 3412 } 3413 3414 #if qDNGValidate 3415 3416 if (gVerbose) 3417 { 3418 3419 printf ("LensSpecificationExif: "); 3420 3421 real64 minFL = fLensInfo [0].As_real64 (); 3422 real64 maxFL = fLensInfo [1].As_real64 (); 3423 3424 if (minFL == maxFL) 3425 printf ("%0.1f mm", minFL); 3426 else 3427 printf ("%0.1f-%0.1f mm", minFL, maxFL); 3428 3429 if (fLensInfo [2].d) 3430 { 3431 3432 real64 minFS = fLensInfo [2].As_real64 (); 3433 real64 maxFS = fLensInfo [3].As_real64 (); 3434 3435 if (minFS == maxFS) 3436 printf (" f/%0.1f", minFS); 3437 else 3438 printf (" f/%0.1f-%0.1f", minFS, maxFS); 3439 3440 } 3441 3442 printf ("\n"); 3443 3444 } 3445 3446 #endif 3447 3448 break; 3449 3450 } 3451 3452 case tcLensMakeExif: 3453 { 3454 3455 CheckTagType (parentCode, tagCode, tagType, ttAscii); 3456 3457 ParseStringTag (stream, 3458 parentCode, 3459 tagCode, 3460 tagCount, 3461 fLensMake); 3462 3463 #if qDNGValidate 3464 3465 if (gVerbose) 3466 { 3467 3468 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 3469 3470 DumpString (fLensMake); 3471 3472 printf ("\n"); 3473 3474 } 3475 3476 #endif 3477 3478 break; 3479 3480 } 3481 3482 case tcLensModelExif: 3483 { 3484 3485 CheckTagType (parentCode, tagCode, tagType, ttAscii); 3486 3487 ParseStringTag (stream, 3488 parentCode, 3489 tagCode, 3490 tagCount, 3491 fLensName); 3492 3493 fLensNameWasReadFromExif = fLensName.NotEmpty (); 3494 3495 #if qDNGValidate 3496 3497 if (gVerbose) 3498 { 3499 3500 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 3501 3502 DumpString (fLensName); 3503 3504 printf ("\n"); 3505 3506 } 3507 3508 #endif 3509 3510 break; 3511 3512 } 3513 3514 case tcLensSerialNumberExif: 3515 { 3516 3517 CheckTagType (parentCode, tagCode, tagType, ttAscii); 3518 3519 ParseStringTag (stream, 3520 parentCode, 3521 tagCode, 3522 tagCount, 3523 fLensSerialNumber); 3524 3525 #if qDNGValidate 3526 3527 if (gVerbose) 3528 { 3529 3530 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 3531 3532 DumpString (fLensSerialNumber); 3533 3534 printf ("\n"); 3535 3536 } 3537 3538 #endif 3539 3540 break; 3541 3542 } 3543 3544 default: 3545 { 3546 3547 return false; 3548 3549 } 3550 3551 } 3552 3553 return true; 3554 3555 } 3556 3557 /*****************************************************************************/ 3558 3559 // Parses tags that should only appear in GPS IFD 3560 3561 bool dng_exif::Parse_gps (dng_stream &stream, 3562 dng_shared & /* shared */, 3563 uint32 parentCode, 3564 uint32 tagCode, 3565 uint32 tagType, 3566 uint32 tagCount, 3567 uint64 /* tagOffset */) 3568 { 3569 3570 switch (tagCode) 3571 { 3572 3573 case tcGPSVersionID: 3574 { 3575 3576 CheckTagType (parentCode, tagCode, tagType, ttByte); 3577 3578 CheckTagCount (parentCode, tagCode, tagCount, 4); 3579 3580 uint32 b0 = stream.Get_uint8 (); 3581 uint32 b1 = stream.Get_uint8 (); 3582 uint32 b2 = stream.Get_uint8 (); 3583 uint32 b3 = stream.Get_uint8 (); 3584 3585 fGPSVersionID = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; 3586 3587 #if qDNGValidate 3588 3589 if (gVerbose) 3590 { 3591 printf ("GPSVersionID: %u.%u.%u.%u\n", 3592 (unsigned) b0, 3593 (unsigned) b1, 3594 (unsigned) b2, 3595 (unsigned) b3); 3596 } 3597 3598 #endif 3599 3600 break; 3601 3602 } 3603 3604 case tcGPSLatitudeRef: 3605 case tcGPSLongitudeRef: 3606 case tcGPSSatellites: 3607 case tcGPSStatus: 3608 case tcGPSMeasureMode: 3609 case tcGPSSpeedRef: 3610 case tcGPSTrackRef: 3611 case tcGPSImgDirectionRef: 3612 case tcGPSMapDatum: 3613 case tcGPSDestLatitudeRef: 3614 case tcGPSDestLongitudeRef: 3615 case tcGPSDestBearingRef: 3616 case tcGPSDestDistanceRef: 3617 case tcGPSDateStamp: 3618 { 3619 3620 if (!CheckTagType (parentCode, tagCode, tagType, ttAscii)) 3621 return false; 3622 3623 dng_string *s; 3624 3625 switch (tagCode) 3626 { 3627 3628 case tcGPSLatitudeRef: 3629 s = &fGPSLatitudeRef; 3630 break; 3631 3632 case tcGPSLongitudeRef: 3633 s = &fGPSLongitudeRef; 3634 break; 3635 3636 case tcGPSSatellites: 3637 s = &fGPSSatellites; 3638 break; 3639 3640 case tcGPSStatus: 3641 s = &fGPSStatus; 3642 break; 3643 3644 case tcGPSMeasureMode: 3645 s = &fGPSMeasureMode; 3646 break; 3647 3648 case tcGPSSpeedRef: 3649 s = &fGPSSpeedRef; 3650 break; 3651 3652 case tcGPSTrackRef: 3653 s = &fGPSTrackRef; 3654 break; 3655 3656 case tcGPSImgDirectionRef: 3657 s = &fGPSImgDirectionRef; 3658 break; 3659 3660 case tcGPSMapDatum: 3661 s = &fGPSMapDatum; 3662 break; 3663 3664 case tcGPSDestLatitudeRef: 3665 s = &fGPSDestLatitudeRef; 3666 break; 3667 3668 case tcGPSDestLongitudeRef: 3669 s = &fGPSDestLongitudeRef; 3670 break; 3671 3672 case tcGPSDestBearingRef: 3673 s = &fGPSDestBearingRef; 3674 break; 3675 3676 case tcGPSDestDistanceRef: 3677 s = &fGPSDestDistanceRef; 3678 break; 3679 3680 case tcGPSDateStamp: 3681 s = &fGPSDateStamp; 3682 break; 3683 3684 default: 3685 return false; 3686 3687 } 3688 3689 ParseStringTag (stream, 3690 parentCode, 3691 tagCode, 3692 tagCount, 3693 *s); 3694 3695 #if qDNGValidate 3696 3697 if (gVerbose) 3698 { 3699 3700 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 3701 3702 DumpString (*s); 3703 3704 printf ("\n"); 3705 3706 } 3707 3708 #endif 3709 3710 break; 3711 3712 } 3713 3714 case tcGPSLatitude: 3715 case tcGPSLongitude: 3716 case tcGPSTimeStamp: 3717 case tcGPSDestLatitude: 3718 case tcGPSDestLongitude: 3719 { 3720 3721 if (!CheckTagType (parentCode, tagCode, tagType, ttRational)) 3722 return false; 3723 3724 if (!CheckTagCount (parentCode, tagCode, tagCount, 3)) 3725 return false; 3726 3727 dng_urational *u; 3728 3729 switch (tagCode) 3730 { 3731 3732 case tcGPSLatitude: 3733 u = fGPSLatitude; 3734 break; 3735 3736 case tcGPSLongitude: 3737 u = fGPSLongitude; 3738 break; 3739 3740 case tcGPSTimeStamp: 3741 u = fGPSTimeStamp; 3742 break; 3743 3744 case tcGPSDestLatitude: 3745 u = fGPSDestLatitude; 3746 break; 3747 3748 case tcGPSDestLongitude: 3749 u = fGPSDestLongitude; 3750 break; 3751 3752 default: 3753 return false; 3754 3755 } 3756 3757 u [0] = stream.TagValue_urational (tagType); 3758 u [1] = stream.TagValue_urational (tagType); 3759 u [2] = stream.TagValue_urational (tagType); 3760 3761 #if qDNGValidate 3762 3763 if (gVerbose) 3764 { 3765 3766 printf ("%s:", LookupTagCode (parentCode, tagCode)); 3767 3768 for (uint32 j = 0; j < 3; j++) 3769 { 3770 3771 if (u [j].d == 0) 3772 printf (" -"); 3773 3774 else 3775 printf (" %0.4f", u [j].As_real64 ()); 3776 3777 } 3778 3779 printf ("\n"); 3780 3781 } 3782 3783 #endif 3784 3785 break; 3786 3787 } 3788 3789 case tcGPSAltitudeRef: 3790 { 3791 3792 CheckTagType (parentCode, tagCode, tagType, ttByte); 3793 3794 CheckTagCount (parentCode, tagCode, tagCount, 1); 3795 3796 fGPSAltitudeRef = stream.TagValue_uint32 (tagType); 3797 3798 #if qDNGValidate 3799 3800 if (gVerbose) 3801 { 3802 3803 printf ("GPSAltitudeRef: "); 3804 3805 switch (fGPSAltitudeRef) 3806 { 3807 3808 case 0: 3809 printf ("Sea level"); 3810 break; 3811 3812 case 1: 3813 printf ("Sea level reference (negative value)"); 3814 break; 3815 3816 default: 3817 printf ("%u", (unsigned) fGPSAltitudeRef); 3818 break; 3819 3820 } 3821 3822 printf ("\n"); 3823 3824 } 3825 3826 #endif 3827 3828 break; 3829 3830 } 3831 3832 case tcGPSAltitude: 3833 case tcGPSDOP: 3834 case tcGPSSpeed: 3835 case tcGPSTrack: 3836 case tcGPSImgDirection: 3837 case tcGPSDestBearing: 3838 case tcGPSDestDistance: 3839 case tcGPSHPositioningError: 3840 { 3841 3842 if (!CheckTagType (parentCode, tagCode, tagType, ttRational)) 3843 return false; 3844 3845 CheckTagCount (parentCode, tagCode, tagCount, 1); 3846 3847 dng_urational *u; 3848 3849 switch (tagCode) 3850 { 3851 3852 case tcGPSAltitude: 3853 u = &fGPSAltitude; 3854 break; 3855 3856 case tcGPSDOP: 3857 u = &fGPSDOP; 3858 break; 3859 3860 case tcGPSSpeed: 3861 u = &fGPSSpeed; 3862 break; 3863 3864 case tcGPSTrack: 3865 u = &fGPSTrack; 3866 break; 3867 3868 case tcGPSImgDirection: 3869 u = &fGPSImgDirection; 3870 break; 3871 3872 case tcGPSDestBearing: 3873 u = &fGPSDestBearing; 3874 break; 3875 3876 case tcGPSDestDistance: 3877 u = &fGPSDestDistance; 3878 break; 3879 3880 case tcGPSHPositioningError: 3881 u = &fGPSHPositioningError; 3882 break; 3883 3884 default: 3885 return false; 3886 3887 } 3888 3889 *u = stream.TagValue_urational (tagType); 3890 3891 #if qDNGValidate 3892 3893 if (gVerbose) 3894 { 3895 3896 printf ("%s:", LookupTagCode (parentCode, tagCode)); 3897 3898 if (u->d == 0) 3899 printf (" -"); 3900 3901 else 3902 printf (" %0.4f", u->As_real64 ()); 3903 3904 printf ("\n"); 3905 3906 } 3907 3908 #endif 3909 3910 break; 3911 3912 } 3913 3914 case tcGPSProcessingMethod: 3915 case tcGPSAreaInformation: 3916 { 3917 3918 if (!CheckTagType (parentCode, tagCode, tagType, ttUndefined)) 3919 return false; 3920 3921 dng_string *s; 3922 3923 switch (tagCode) 3924 { 3925 3926 case tcGPSProcessingMethod: 3927 s = &fGPSProcessingMethod; 3928 break; 3929 3930 case tcGPSAreaInformation: 3931 s = &fGPSAreaInformation; 3932 break; 3933 3934 default: 3935 return false; 3936 3937 } 3938 3939 ParseEncodedStringTag (stream, 3940 parentCode, 3941 tagCode, 3942 tagCount, 3943 *s); 3944 3945 #if qDNGValidate 3946 3947 if (gVerbose) 3948 { 3949 3950 printf ("%s: ", LookupTagCode (parentCode, tagCode)); 3951 3952 DumpString (*s); 3953 3954 printf ("\n"); 3955 3956 } 3957 3958 #endif 3959 3960 break; 3961 3962 } 3963 3964 case tcGPSDifferential: 3965 { 3966 3967 CheckTagType (parentCode, tagCode, tagType, ttShort); 3968 3969 CheckTagCount (parentCode, tagCode, tagCount, 1); 3970 3971 fGPSDifferential = stream.TagValue_uint32 (tagType); 3972 3973 #if qDNGValidate 3974 3975 if (gVerbose) 3976 { 3977 3978 printf ("GPSDifferential: "); 3979 3980 switch (fGPSDifferential) 3981 { 3982 3983 case 0: 3984 printf ("Measurement without differential correction"); 3985 break; 3986 3987 case 1: 3988 printf ("Differential correction applied"); 3989 break; 3990 3991 default: 3992 printf ("%u", (unsigned) fGPSDifferential); 3993 3994 } 3995 3996 printf ("\n"); 3997 3998 } 3999 4000 #endif 4001 4002 break; 4003 4004 } 4005 4006 default: 4007 { 4008 4009 return false; 4010 4011 } 4012 4013 } 4014 4015 return true; 4016 4017 } 4018 4019 /*****************************************************************************/ 4020 4021 // Parses tags that should only appear in Interoperability IFD 4022 4023 bool dng_exif::Parse_interoperability (dng_stream &stream, 4024 dng_shared & /* shared */, 4025 uint32 parentCode, 4026 uint32 tagCode, 4027 uint32 tagType, 4028 uint32 tagCount, 4029 uint64 /* tagOffset */) 4030 { 4031 4032 switch (tagCode) 4033 { 4034 4035 case tcInteroperabilityIndex: 4036 { 4037 4038 CheckTagType (parentCode, tagCode, tagType, ttAscii); 4039 4040 CheckTagCount (parentCode, tagCode, tagCount, 4); 4041 4042 ParseStringTag (stream, 4043 parentCode, 4044 tagCode, 4045 tagCount, 4046 fInteroperabilityIndex); 4047 4048 #if qDNGValidate 4049 4050 if (gVerbose) 4051 { 4052 4053 printf ("InteroperabilityIndex: "); 4054 4055 DumpString (fInteroperabilityIndex); 4056 4057 printf ("\n"); 4058 4059 } 4060 4061 #endif 4062 4063 break; 4064 4065 } 4066 4067 case tcInteroperabilityVersion: 4068 { 4069 4070 CheckTagType (parentCode, tagCode, tagType, ttUndefined); 4071 4072 CheckTagCount (parentCode, tagCode, tagCount, 4); 4073 4074 uint32 b0 = stream.Get_uint8 (); 4075 uint32 b1 = stream.Get_uint8 (); 4076 uint32 b2 = stream.Get_uint8 (); 4077 uint32 b3 = stream.Get_uint8 (); 4078 4079 fInteroperabilityVersion = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3; 4080 4081 #if qDNGValidate 4082 4083 if (gVerbose) 4084 { 4085 4086 real64 x = (b0 - '0') * 10.00 + 4087 (b1 - '0') * 1.00 + 4088 (b2 - '0') * 0.10 + 4089 (b3 - '0') * 0.01; 4090 4091 printf ("InteroperabilityVersion: %0.2f\n", x); 4092 4093 } 4094 4095 #endif 4096 4097 break; 4098 4099 } 4100 4101 case tcRelatedImageFileFormat: 4102 { 4103 4104 CheckTagType (parentCode, tagCode, tagType, ttAscii); 4105 4106 ParseStringTag (stream, 4107 parentCode, 4108 tagCode, 4109 tagCount, 4110 fRelatedImageFileFormat); 4111 4112 #if qDNGValidate 4113 4114 if (gVerbose) 4115 { 4116 4117 printf ("RelatedImageFileFormat: "); 4118 4119 DumpString (fRelatedImageFileFormat); 4120 4121 printf ("\n"); 4122 4123 } 4124 4125 #endif 4126 4127 break; 4128 4129 } 4130 4131 case tcRelatedImageWidth: 4132 { 4133 4134 CheckTagType (parentCode, tagCode, tagType, ttShort, ttLong); 4135 4136 CheckTagCount (parentCode, tagCode, tagCount, 1); 4137 4138 fRelatedImageWidth = stream.TagValue_uint32 (tagType); 4139 4140 #if qDNGValidate 4141 4142 if (gVerbose) 4143 { 4144 printf ("RelatedImageWidth: %u\n", (unsigned) fRelatedImageWidth); 4145 } 4146 4147 #endif 4148 4149 break; 4150 4151 } 4152 4153 case tcRelatedImageLength: 4154 { 4155 4156 CheckTagType (parentCode, tagCode, tagType, ttShort, ttLong); 4157 4158 CheckTagCount (parentCode, tagCode, tagCount, 1); 4159 4160 fRelatedImageLength = stream.TagValue_uint32 (tagType); 4161 4162 #if qDNGValidate 4163 4164 if (gVerbose) 4165 { 4166 printf ("RelatedImageLength: %u\n", (unsigned) fRelatedImageLength); 4167 } 4168 4169 #endif 4170 4171 break; 4172 4173 } 4174 4175 default: 4176 { 4177 4178 return false; 4179 4180 } 4181 4182 } 4183 4184 return true; 4185 4186 } 4187 4188 /*****************************************************************************/ 4189 4190 void dng_exif::PostParse (dng_host & /* host */, 4191 dng_shared & /* shared */) 4192 { 4193 4194 #if qDNGValidate 4195 4196 const real64 kAPEX_Slop = 0.25; 4197 4198 // Sanity check on MaxApertureValue. 4199 4200 if (fMaxApertureValue.d) 4201 { 4202 4203 real64 mav = fMaxApertureValue.As_real64 (); 4204 4205 // Compare against ApertureValue or FNumber. 4206 4207 real64 av = mav; 4208 4209 if (fApertureValue.d) 4210 { 4211 4212 av = fApertureValue.As_real64 (); 4213 4214 } 4215 4216 else if (fFNumber.d) 4217 { 4218 4219 real64 fs = fFNumber.As_real64 (); 4220 4221 if (fs >= 1.0) 4222 { 4223 4224 av = FNumberToApertureValue (fs); 4225 4226 } 4227 4228 } 4229 4230 if (mav > av + kAPEX_Slop) 4231 { 4232 4233 ReportWarning ("MaxApertureValue conflicts with ApertureValue and/or FNumber"); 4234 4235 } 4236 4237 // Compare against LensInfo 4238 4239 if (fLensInfo [2].d && fLensInfo [3].d) 4240 { 4241 4242 real64 fs1 = fLensInfo [2].As_real64 (); 4243 real64 fs2 = fLensInfo [3].As_real64 (); 4244 4245 if (fs1 >= 1.0 && fs2 >= 1.0 && fs2 >= fs1) 4246 { 4247 4248 real64 av1 = FNumberToApertureValue (fs1); 4249 real64 av2 = FNumberToApertureValue (fs2); 4250 4251 // Wide angle adapters might create an effective 4252 // wide FS, and tele-extenders always result 4253 // in a higher FS. 4254 4255 if (mav < av1 - kAPEX_Slop - 1.0 || 4256 mav > av2 + kAPEX_Slop + 2.0) 4257 { 4258 4259 ReportWarning ("Possible MaxApertureValue conflict with LensInfo"); 4260 4261 } 4262 4263 } 4264 4265 } 4266 4267 } 4268 4269 // Sanity check on FocalLength. 4270 4271 if (fFocalLength.d) 4272 { 4273 4274 real64 fl = fFocalLength.As_real64 (); 4275 4276 if (fl < 1.0) 4277 { 4278 4279 ReportWarning ("FocalLength is less than 1.0 mm (legal but unlikely)"); 4280 4281 } 4282 4283 else if (fLensInfo [0].d && fLensInfo [1].d) 4284 { 4285 4286 real64 minFL = fLensInfo [0].As_real64 (); 4287 real64 maxFL = fLensInfo [1].As_real64 (); 4288 4289 // Allow for wide-angle converters and tele-extenders. 4290 4291 if (fl < minFL * 0.6 || 4292 fl > maxFL * 2.1) 4293 { 4294 4295 ReportWarning ("Possible FocalLength conflict with LensInfo"); 4296 4297 } 4298 4299 } 4300 4301 } 4302 4303 #endif 4304 4305 // Mirror DateTimeOriginal to DateTime. 4306 4307 if (fDateTime.NotValid () && fDateTimeOriginal.IsValid ()) 4308 { 4309 4310 fDateTime = fDateTimeOriginal; 4311 4312 } 4313 4314 // Mirror EXIF 2.3 sensitivity tags to ISOSpeedRatings. 4315 4316 if (fISOSpeedRatings [0] == 0 || fISOSpeedRatings [0] == 65535) 4317 { 4318 4319 // Prefer Recommended Exposure Index, then Standard Output Sensitivity, then 4320 // ISO Speed, then Exposure Index. 4321 4322 if (fRecommendedExposureIndex != 0 && 4323 (fSensitivityType == stRecommendedExposureIndex || 4324 fSensitivityType == stSOSandREI || 4325 fSensitivityType == stREIandISOSpeed || 4326 fSensitivityType == stSOSandREIandISOSpeed)) 4327 { 4328 4329 fISOSpeedRatings [0] = fRecommendedExposureIndex; 4330 4331 } 4332 4333 else if (fStandardOutputSensitivity != 0 && 4334 (fSensitivityType == stStandardOutputSensitivity || 4335 fSensitivityType == stSOSandREI || 4336 fSensitivityType == stSOSandISOSpeed || 4337 fSensitivityType == stSOSandREIandISOSpeed)) 4338 { 4339 4340 fISOSpeedRatings [0] = fStandardOutputSensitivity; 4341 4342 } 4343 4344 else if (fISOSpeed != 0 && 4345 (fSensitivityType == stISOSpeed || 4346 fSensitivityType == stSOSandISOSpeed || 4347 fSensitivityType == stREIandISOSpeed || 4348 fSensitivityType == stSOSandREIandISOSpeed)) 4349 { 4350 4351 fISOSpeedRatings [0] = fISOSpeed; 4352 4353 } 4354 4355 } 4356 4357 // Mirror ExposureIndex to ISOSpeedRatings. 4358 4359 if (fExposureIndex.IsValid () && fISOSpeedRatings [0] == 0) 4360 { 4361 4362 fISOSpeedRatings [0] = Round_uint32 (fExposureIndex.As_real64 ()); 4363 4364 } 4365 4366 // Kodak sets the GPSAltitudeRef without setting the GPSAltitude. 4367 4368 if (fGPSAltitude.NotValid ()) 4369 { 4370 4371 fGPSAltitudeRef = 0xFFFFFFFF; 4372 4373 } 4374 4375 // If there is no valid GPS data, clear the GPS version number. 4376 4377 if (fGPSLatitude [0].NotValid () && 4378 fGPSLongitude [0].NotValid () && 4379 fGPSAltitude .NotValid () && 4380 fGPSTimeStamp [0].NotValid () && 4381 fGPSDateStamp .IsEmpty ()) 4382 { 4383 4384 fGPSVersionID = 0; 4385 4386 } 4387 4388 } 4389 4390 /*****************************************************************************/ 4391
