This repository has been archived by the owner on Nov 7, 2018. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 58
/
ximapsd.cpp
1310 lines (1116 loc) · 42.4 KB
/
ximapsd.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* File: ximapsd.cpp
* Purpose: Platform Independent PSD Image Class Loader
* Dec/2010 Davide Pizzolato - www.xdp.it
* CxImage version 7.0.1 07/Jan/2011
*
* libpsd (c) 2004-2007 Graphest Software
*
* Based on MyPSD class by Iosif Hamlatzis
* Details: http://www.codeproject.com/KB/graphics/MyPSD.aspx
* Cleaned up a bit and ported to CxImage by Vitaly Ovchinnikov
* Send feedback to vitaly(dot)ovchinnikov(at)gmail.com
*/
#include "ximapsd.h"
#if CXIMAGE_SUPPORT_PSD
enum {
PSD_FILE_HEADER,
PSD_COLOR_MODE_DATA,
PSD_IMAGE_RESOURCE,
PSD_LAYER_AND_MASK_INFORMATION,
PSD_IMAGE_DATA,
PSD_DONE
};
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_USE_LIBPSD == 0
// MyPSD.h /////////////////////////////////////////////////////////////////////
#ifndef __MyPSD_H__
#define __MyPSD_H__
namespace MyPSD
{
class CPSD
{
struct HEADER_INFO
{
//Table 2-12: HeaderInfo Color spaces
// Color-ID Name Description
//-------------------------------------------
// 0 Bitmap // Probably means black & white
// 1 Grayscale The first value in the color data is the gray value, from 0...10000.
// 2 Indexed
// 3 RGB The first three values in the color data are red, green, and blue.
// They are full unsigned 16–bit values as in Apple’s RGBColor data
// structure. Pure red=65535,0,0.
// 4 CMYK The four values in the color data are cyan, magenta, yellow, and
// black. They are full unsigned 16–bit values. 0=100% ink. Pure
// cyan=0,65535,65535,65535.
// 7 Multichannel // Have no idea
// 8 Duotone
// 9 Lab The first three values in the color data are lightness, a chrominance,
// and b chrominance.
// Lightness is a 16–bit value from 0...100. The chromanance components
// are each 16–bit values from –128...127. Gray values
// are represented by chrominance components of 0. Pure
// white=100,0,0.
short nChannels;
int nHeight;
int nWidth;
short nBitsPerPixel;
short nColourMode;
HEADER_INFO();
};
struct COLOUR_MODE_DATA
{
int nLength;
unsigned char* ColourData;
COLOUR_MODE_DATA();
};
struct IMAGE_RESOURCE
{
// Table 2–1: Image resource block
// Type Name Description
//-------------------------------------------
// OSType Type Photoshop always uses its signature, 8BIM
// int16 ID Unique identifier
// PString Name A pascal string, padded to make size even (a null name consists of two bytes of 0)
// Pascal style string where the first byte gives the length of the
// string and the content bytes follow.
// int32 Size Actual size of resource data. This does not include the
// Type, ID, Name, or Size fields.
// Variable Data Resource data, padded to make size even
int nLength;
char OSType[4];
short nID;
unsigned char* Name;
int nSize;
IMAGE_RESOURCE();
void Reset();
};
struct RESOLUTION_INFO
{
// Table A-6: ResolutionInfo structure
// Type Name Description
//-------------------------------------------
// Fixed hRes Horizontal resolution in pixels per inch.
// int hResUnit 1=display horizontal resolution in pixels per inch;
// 2=display horizontal resolution in pixels per cm.
// short widthUnit Display width as 1=inches; 2=cm; 3=points; 4=picas; 5=columns.
// Fixed vRes Vertical resolution in pixels per inch.
// int vResUnit 1=display vertical resolution in pixels per inch;
// 2=display vertical resolution in pixels per cm.
// short heightUnit Display height as 1=inches; 2=cm; 3=points; 4=picas; 5=columns.
short hRes;
int hResUnit;
short widthUnit;
short vRes;
int vResUnit;
short heightUnit;
RESOLUTION_INFO();
};
struct RESOLUTION_INFO_v2 // Obsolete - Photoshop 2.0
{
short nChannels;
short nRows;
short nColumns;
short nDepth;
short nMode;
RESOLUTION_INFO_v2();
};
struct DISPLAY_INFO
{
// This structure contains display information about each channel.
//Table A-7: DisplayInfo Color spaces
// Color-ID Name Description
//-------------------------------------------
// 0 RGB The first three values in the color data are red, green, and blue.
// They are full unsigned 16–bit values as in Apple’s RGBColor data
// structure. Pure red=65535,0,0.
// 1 HSB The first three values in the color data are hue, saturation, and
// brightness. They are full unsigned 16–bit values as in Apple’s
// HSVColor data structure. Pure red=0,65535, 65535.
// 2 CMYK The four values in the color data are cyan, magenta, yellow, and
// black. They are full unsigned 16–bit values. 0=100% ink. Pure
// cyan=0,65535,65535,65535.
// 7 Lab The first three values in the color data are lightness, a chrominance,
// and b chrominance.
// Lightness is a 16–bit value from 0...10000. The chromanance components
// are each 16–bit values from –12800...12700. Gray values
// are represented by chrominance components of 0. Pure
// white=10000,0,0.
// 8 grayscale The first value in the color data is the gray value, from 0...10000.
short ColourSpace;
short Colour[4];
short Opacity; // 0..100
bool kind; // selected = 0, protected = 1
unsigned char padding; // should be zero
DISPLAY_INFO();
};
struct THUMBNAIL
{
// Adobe Photoshop 5.0 and later stores thumbnail information for preview
// display in an image resource block. These resource blocks consist of an
// 28 byte header, followed by a JFIF thumbnail in RGB (red, green, blue)
// for both Macintosh and Windows. Adobe Photoshop 4.0 stored the
// thumbnail information in the same format except the data section is
// (blue, green, red). The Adobe Photoshop 4.0 format is at resource ID
// and the Adobe Photoshop 5.0 format is at resource ID 1036.
// Table 2–5: Thumnail resource header
// Type Name Description
//-------------------------------------------
// 4 bytes format = 1 (kJpegRGB). Also supports kRawRGB (0).
// 4 bytes width Width of thumbnail in pixels.
// 4 bytes height Height of thumbnail in pixels.
// 4 bytes widthbytes Padded row bytes as (width * bitspixel + 31) / 32 * 4.
// 4 bytes size Total size as widthbytes * height * planes
// 4 bytes compressedsize Size after compression. Used for consistentcy check.
// 2 bytes bitspixel = 24. Bits per pixel.
// 2 bytes planes = 1. Number of planes.
// Variable Data JFIF data in RGB format.
// Note: For resource ID 1033 the data is in BGR format.
int nFormat;
int nWidth;
int nHeight;
int nWidthBytes;
int nSize;
int nCompressedSize;
short nBitPerPixel;
short nPlanes;
unsigned char* Data;
THUMBNAIL();
};
CxImage &m_image;
HEADER_INFO header_info;
COLOUR_MODE_DATA colour_mode_data;
short mnColourCount;
short mnTransparentIndex;
IMAGE_RESOURCE image_resource;
int mnGlobalAngle;
RESOLUTION_INFO resolution_info;
bool mbResolutionInfoFilled;
RESOLUTION_INFO_v2 resolution_info_v2;
bool mbResolutionInfoFilled_v2;
DISPLAY_INFO display_info;
bool mbDisplayInfoFilled;
THUMBNAIL thumbnail;
bool mbThumbNailFilled;
bool mbCopyright;
int Calculate(unsigned char* c, int nDigits);
void XYZToRGB(const double X, const double Y, const double Z, int &R, int &G, int &B);
void LabToRGB(const int L, const int a, const int b, int &R, int &G, int &B );
void CMYKToRGB(const double C, const double M, const double Y, const double K, int &R, int &G, int &B);
bool ReadHeader(CxFile &f, HEADER_INFO& header_info);
bool ReadColourModeData(CxFile &f, COLOUR_MODE_DATA& colour_mode_data);
bool ReadImageResource(CxFile &f, IMAGE_RESOURCE& image_resource);
bool ReadLayerAndMaskInfoSection(CxFile &f); // Actually ignore it
int ReadImageData(CxFile &f);
int DecodeRawData(CxFile &pFile);
int DecodeRLEData(CxFile &pFile);
void ProccessBuffer(unsigned char* pData = 0);
public:
CPSD(CxImage &image);
~CPSD();
int Load(LPCTSTR szPathName);
int Load(CxFile &file);
bool ThumbNailIncluded() const { return mbThumbNailFilled; }
void DPI(int &x, int &y) const { x = resolution_info.hRes; y = resolution_info.vRes; }
void Dimensions(int &cx, int &cy) const { cx = header_info.nWidth; cy = header_info.nHeight; }
int BitsPerPixel() const { return header_info.nBitsPerPixel; }
int GlobalAngle() const { return mnGlobalAngle; }
bool IsCopyright() const { return mbCopyright; }
HBITMAP Detach();
};
}
#endif // __MyPSD_H__
// MyPSD.cpp ///////////////////////////////////////////////////////////////////
inline int dti(double value) { return (int)floor(value+.5f); }
#define assert(a)
#define mypsd_fread(a, b, c, d) d.Read(a, b, c)
#define mypsd_fseek(a, b, c) a.Seek(b, c)
#define mypsd_feof(a) a.Eof()
namespace MyPSD
{
CPSD::CPSD(CxImage &image) : m_image(image)
{
mbThumbNailFilled = false;
mbDisplayInfoFilled = false;
mbResolutionInfoFilled = false;
mbResolutionInfoFilled_v2 = false;
mnGlobalAngle = 30;
mbCopyright = false;
mnColourCount = -1;
mnTransparentIndex = -1;
}
CPSD::~CPSD()
{
// free memory
if ( 0 < colour_mode_data.nLength )
delete[] colour_mode_data.ColourData;
colour_mode_data.ColourData = 0;
if ( image_resource.Name )
delete[] image_resource.Name;
image_resource.Name = 0;
}
int CPSD::Calculate(unsigned char* c, int nDigits)
{
int nValue = 0;
for(int n = 0; n < nDigits; ++n)
nValue = ( nValue << 8 ) | *(c+n);
return nValue;
};
void CPSD::XYZToRGB(const double X, const double Y, const double Z, int &R, int &G, int &B)
{
// Standards used Observer = 2, Illuminant = D65
// ref_X = 95.047, ref_Y = 100.000, ref_Z = 108.883
const double ref_X = 95.047;
const double ref_Y = 100.000;
const double ref_Z = 108.883;
double var_X = X / 100.0;
double var_Y = Y / 100.0;
double var_Z = Z / 100.0;
double var_R = var_X * 3.2406 + var_Y * (-1.5372) + var_Z * (-0.4986);
double var_G = var_X * (-0.9689) + var_Y * 1.8758 + var_Z * 0.0415;
double var_B = var_X * 0.0557 + var_Y * (-0.2040) + var_Z * 1.0570;
if ( var_R > 0.0031308 )
var_R = 1.055 * ( pow(var_R, 1/2.4) ) - 0.055;
else
var_R = 12.92 * var_R;
if ( var_G > 0.0031308 )
var_G = 1.055 * ( pow(var_G, 1/2.4) ) - 0.055;
else
var_G = 12.92 * var_G;
if ( var_B > 0.0031308 )
var_B = 1.055 * ( pow(var_B, 1/2.4) )- 0.055;
else
var_B = 12.92 * var_B;
R = (int)(var_R * 256.0);
G = (int)(var_G * 256.0);
B = (int)(var_B * 256.0);
};
void CPSD::LabToRGB(const int L, const int a, const int b, int &R, int &G, int &B )
{
// For the conversion we first convert values to XYZ and then to RGB
// Standards used Observer = 2, Illuminant = D65
// ref_X = 95.047, ref_Y = 100.000, ref_Z = 108.883
const double ref_X = 95.047;
const double ref_Y = 100.000;
const double ref_Z = 108.883;
double var_Y = ( (double)L + 16.0 ) / 116.0;
double var_X = (double)a / 500.0 + var_Y;
double var_Z = var_Y - (double)b / 200.0;
if ( pow(var_Y, 3) > 0.008856 )
var_Y = pow(var_Y, 3);
else
var_Y = ( var_Y - 16 / 116 ) / 7.787;
if ( pow(var_X, 3) > 0.008856 )
var_X = pow(var_X, 3);
else
var_X = ( var_X - 16 / 116 ) / 7.787;
if ( pow(var_Z, 3) > 0.008856 )
var_Z = pow(var_Z, 3);
else
var_Z = ( var_Z - 16 / 116 ) / 7.787;
double X = ref_X * var_X;
double Y = ref_Y * var_Y;
double Z = ref_Z * var_Z;
XYZToRGB(X, Y, Z, R, G, B);
};
void CPSD::CMYKToRGB(const double C, const double M, const double Y, const double K, int &R, int &G, int &B )
{
R = dti( ( 1.0f - ( C *( 1.0f - K ) + K ) ) * 255.0f );
G = dti( ( 1.0f - ( M *( 1.0f - K ) + K ) ) * 255.0f );
B = dti( ( 1.0f - ( Y *( 1.0f - K ) + K ) ) * 255.0f );
};
bool CPSD::ReadLayerAndMaskInfoSection(CxFile &pFile) // Actually ignore it
{
bool bSuccess = false;
unsigned char DataLength[4];
int nBytesRead = 0;
int nItemsRead = (int)(int)mypsd_fread(&DataLength, sizeof(DataLength), 1, pFile);
int nTotalBytes = Calculate( DataLength, sizeof(DataLength) );
unsigned char data[1];
while( !mypsd_feof( pFile ) && ( nBytesRead < nTotalBytes ) )
{
data[0] = '\0';
nItemsRead = (int)(int)mypsd_fread(&data, sizeof(data), 1, pFile);
nBytesRead += nItemsRead * sizeof(data);
}
assert ( nBytesRead == nTotalBytes );
if ( nBytesRead == nTotalBytes )
bSuccess = true;
return bSuccess;
}
bool CPSD::ReadImageResource(CxFile &pFile, IMAGE_RESOURCE& image_resource)
{
bool bSuccess = false;
unsigned char Length[4];
int nItemsRead = (int)(int)mypsd_fread(&Length, sizeof(Length), 1, pFile);
image_resource.nLength = Calculate( Length, sizeof(image_resource.nLength) );
int nBytesRead = 0;
int nTotalBytes = image_resource.nLength;
while( !mypsd_feof( pFile ) && ( nBytesRead < nTotalBytes ) )
{
nItemsRead = 0;
image_resource.Reset();
nItemsRead = (int)(int)mypsd_fread(&image_resource.OSType, sizeof(image_resource.OSType), 1, pFile);
nBytesRead += nItemsRead * sizeof(image_resource.OSType);
assert ( 0 == (nBytesRead % 2) );
if (::memcmp(image_resource.OSType, "8BIM", 4) == 0)
{
unsigned char ID[2];
nItemsRead = (int)(int)mypsd_fread(&ID, sizeof(ID), 1, pFile);
nBytesRead += nItemsRead * sizeof(ID);
image_resource.nID = (short)Calculate( ID, sizeof(ID) );
unsigned char SizeOfName;
nItemsRead = (int)(int)mypsd_fread(&SizeOfName, sizeof(SizeOfName), 1, pFile);
nBytesRead += nItemsRead * sizeof(SizeOfName);
int nSizeOfName = Calculate( &SizeOfName, sizeof(SizeOfName) );
if ( 0 < nSizeOfName )
{
image_resource.Name = new unsigned char[nSizeOfName];
nItemsRead = (int)(int)mypsd_fread(image_resource.Name, nSizeOfName, 1, pFile);
nBytesRead += nItemsRead * nSizeOfName;
}
if ( 0 == (nSizeOfName % 2) )
{
nItemsRead = (int)(int)mypsd_fread(&SizeOfName, sizeof(SizeOfName), 1, pFile);
nBytesRead += nItemsRead * sizeof(SizeOfName);
}
unsigned char Size[4];
nItemsRead = (int)(int)mypsd_fread(&Size, sizeof(Size), 1, pFile);
nBytesRead += nItemsRead * sizeof(Size);
image_resource.nSize = Calculate( Size, sizeof(image_resource.nSize) );
if ( 0 != (image_resource.nSize % 2) ) // resource data must be even
image_resource.nSize++;
if ( 0 < image_resource.nSize )
{
unsigned char IntValue[4];
unsigned char ShortValue[2];
switch( image_resource.nID )
{
case 1000:
{
// Obsolete - Photoshop 2.0
mbResolutionInfoFilled_v2 = true;
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info_v2.nChannels = (short)Calculate(ShortValue, sizeof(resolution_info_v2.nChannels) );
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info_v2.nRows = (short)Calculate(ShortValue, sizeof(resolution_info_v2.nRows) );
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info_v2.nColumns = (short)Calculate(ShortValue, sizeof(resolution_info_v2.nColumns) );
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info_v2.nDepth = (short)Calculate(ShortValue, sizeof(resolution_info_v2.nDepth) );
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info_v2.nMode = (short)Calculate(ShortValue, sizeof(resolution_info_v2.nMode) );
}
break;
case 1005:
{
mbResolutionInfoFilled = true;
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info.hRes = (short)Calculate(ShortValue, sizeof(resolution_info.hRes) );
nItemsRead = (int)(int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
resolution_info.hResUnit = Calculate(IntValue, sizeof(resolution_info.hResUnit) );
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info.widthUnit = (short)Calculate(ShortValue, sizeof(resolution_info.widthUnit) );
nItemsRead = (int)(int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info.vRes = (short)Calculate(ShortValue, sizeof(resolution_info.vRes) );
nItemsRead = (int)(int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
resolution_info.vResUnit = Calculate(IntValue, sizeof(resolution_info.vResUnit) );
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
resolution_info.heightUnit = (short)Calculate(ShortValue, sizeof(resolution_info.heightUnit) );
}
break;
case 1007:
{
mbDisplayInfoFilled = true;
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
display_info.ColourSpace = (short)Calculate(ShortValue, sizeof(display_info.ColourSpace) );
for ( unsigned int n = 0; n < 4; ++n )
{
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
display_info.Colour[n] = (short)Calculate(ShortValue, sizeof(display_info.Colour[n]) );
}
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
display_info.Opacity = (short)Calculate(ShortValue, sizeof(display_info.Opacity) );
assert ( 0 <= display_info.Opacity );
assert ( 100 >= display_info.Opacity );
unsigned char c[1];
nItemsRead = (int)mypsd_fread(&c, sizeof(c), 1, pFile);
nBytesRead += nItemsRead * sizeof(c);
( 1 == Calculate(c, sizeof(c) ) ) ? display_info.kind = true : display_info.kind = false;
nItemsRead = (int)mypsd_fread(&c, sizeof(c), 1, pFile);
nBytesRead += nItemsRead * sizeof(c);
display_info.padding = (unsigned int)Calculate(c, sizeof(c) );
assert ( 0 == display_info.padding );
}
break;
case 1034:
{
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
( 1 == Calculate(ShortValue, sizeof(ShortValue) ) ) ? mbCopyright = true : mbCopyright = false;
}
break;
case 1033:
case 1036:
{
mbThumbNailFilled = true;
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
thumbnail.nFormat = Calculate(IntValue, sizeof(thumbnail.nFormat) );
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
thumbnail.nWidth = Calculate(IntValue, sizeof(thumbnail.nWidth) );
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
thumbnail.nHeight = Calculate(IntValue, sizeof(thumbnail.nHeight) );
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
thumbnail.nWidthBytes = Calculate(IntValue, sizeof(thumbnail.nWidthBytes) );
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
thumbnail.nSize = Calculate(IntValue, sizeof(thumbnail.nSize) );
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
thumbnail.nCompressedSize = Calculate(IntValue, sizeof(thumbnail.nCompressedSize) );
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
thumbnail.nBitPerPixel = (short)Calculate(ShortValue, sizeof(thumbnail.nBitPerPixel) );
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
thumbnail.nPlanes = (short)Calculate(ShortValue, sizeof(thumbnail.nPlanes) );
int nTotalData = image_resource.nSize - 28; // header
unsigned char* buffer = new unsigned char[nTotalData];
unsigned char c[1];
if ( 1033 == image_resource.nID )
{
// In BGR format
for (int n = 0; n < nTotalData; n = n +3 )
{
nItemsRead = (int)mypsd_fread(&c, sizeof(unsigned char), 1, pFile);
nBytesRead += nItemsRead * sizeof(unsigned char);
buffer[n+2] = (unsigned char)Calculate(c, sizeof(unsigned char) );
nItemsRead = (int)mypsd_fread(&c, sizeof(unsigned char), 1, pFile);
nBytesRead += nItemsRead * sizeof(unsigned char);
buffer[n+1] = (unsigned char)Calculate(c, sizeof(BYTE) );
nItemsRead = (int)mypsd_fread(&c, sizeof(unsigned char), 1, pFile);
nBytesRead += nItemsRead * sizeof(unsigned char);
buffer[n] = (unsigned char)Calculate(c, sizeof(unsigned char) );
}
}
else if ( 1036 == image_resource.nID )
{
// In RGB format
for (int n = 0; n < nTotalData; ++n )
{
nItemsRead = (int)mypsd_fread(&c, sizeof(BYTE), 1, pFile);
nBytesRead += nItemsRead * sizeof(BYTE);
buffer[n] = (BYTE)Calculate(c, sizeof(BYTE) );
}
}
delete[] buffer;
buffer = 0;
}
break;
case 1037:
{
nItemsRead = (int)mypsd_fread(&IntValue, sizeof(IntValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(IntValue);
mnGlobalAngle = Calculate(IntValue, sizeof(mnGlobalAngle) );
}
break;
case 1046:
{
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
mnColourCount = (short)Calculate(ShortValue, sizeof(ShortValue) );
}
break;
case 1047:
{
nItemsRead = (int)mypsd_fread(&ShortValue, sizeof(ShortValue), 1, pFile);
nBytesRead += nItemsRead * sizeof(ShortValue);
mnTransparentIndex = (short)Calculate(ShortValue, sizeof(ShortValue) );
}
break;
default:
pFile.Seek(image_resource.nSize, SEEK_CUR);
nBytesRead += image_resource.nSize;
break;
}
}
}
}
assert ( nBytesRead == nTotalBytes );
if ( nBytesRead == nTotalBytes )
bSuccess = true;
return bSuccess;
}
bool CPSD::ReadColourModeData(CxFile &pFile, COLOUR_MODE_DATA& colour_mode_data)
{
// Only indexed colour and duotone have colour mode data,
// for all other modes this section is 4 bytes length, the length field is set to zero
// For indexed color images, the length will be equal to 768, and the color
// will contain the color table for the image, in non–interleaved order.
// For duotone images, the color data will contain the duotone specification,
// the format of which is not documented. Other applications that read
// Photoshop files can treat a duotone image as a grayscale image, and just
// preserve the contents of the duotone information when reading and writing
// the file.
// free memory
if ( 0 < colour_mode_data.nLength )
delete[] colour_mode_data.ColourData;
colour_mode_data.ColourData = 0;
unsigned char Length[4];
int nItemsRead = (int)mypsd_fread(&Length, sizeof(Length), 1, pFile);
colour_mode_data.nLength = Calculate( Length, sizeof(colour_mode_data.nLength) );
if ( 0 < colour_mode_data.nLength )
{
colour_mode_data.ColourData = new unsigned char[colour_mode_data.nLength];
nItemsRead = 0;
memset(colour_mode_data.ColourData, 254, colour_mode_data.nLength);
nItemsRead += (int)mypsd_fread( colour_mode_data.ColourData, colour_mode_data.nLength, 1, pFile);
}
return true;
}
bool CPSD::ReadHeader(CxFile &pFile, HEADER_INFO& header_info)
{
bool bSuccess = false;
struct HEADER
{
char Signature[4]; // always equal 8BPS, do not read file if not
unsigned char Version[2]; // always equal 1, do not read file if not
char Reserved[6]; // must be zero
unsigned char Channels[2]; // numer of channels including any alpha channels, supported range 1 to 24
unsigned char Rows[4]; // height in PIXELS, supported range 1 to 30000
unsigned char Columns[4]; // width in PIXELS, supported range 1 to 30000
unsigned char Depth[2]; // number of bpp
unsigned char Mode[2]; // colour mode of the file,
// Btmap=0, Grayscale=1, Indexed=2, RGB=3,
// CMYK=4, Multichannel=7, Duotone=8, Lab=9
};
HEADER header;
int nItemsRead = (int)mypsd_fread(&header, sizeof(HEADER), 1, pFile);
if ( nItemsRead )
{
if ( 0 == ::memcmp(header.Signature, "8BPS", 4))
{
int nVersion = Calculate( header.Version, sizeof(header.Version) );
if ( 1 == nVersion )
{
unsigned int n = 0;
bool bOK = true;
while ( (n < 6) && bOK )
{
if ( '\0' != header.Reserved[n] )
bOK = false;
n++;
}
bSuccess = bOK;
if ( bSuccess )
{
header_info.nChannels = (short)Calculate( header.Channels, sizeof(header.Channels) );
header_info.nHeight = Calculate( header.Rows, sizeof(header.Rows) );
header_info.nWidth = Calculate( header.Columns, sizeof(header.Columns) );
header_info.nBitsPerPixel = (short)Calculate( header.Depth, sizeof(header.Depth) );
header_info.nColourMode = (short)Calculate( header.Mode, sizeof(header.Mode) );
}
}
}
}
return bSuccess;
}
void CPSD::ProccessBuffer(unsigned char* pData )
{
if (!pData) return;
switch ( header_info.nColourMode )
{
case 1: // Grayscale
case 8: // Duotone
{
bool bAlpha = header_info.nChannels > 1;
int nPixels = header_info.nWidth * header_info.nHeight;
byte *pRGBA = new byte[nPixels * (bAlpha ? 4 : 3)];
byte *pSrc = pData, *pDst = pRGBA;
for (int i = 0; i < nPixels; i++, pSrc += header_info.nChannels, pDst += bAlpha ? 4 : 3)
{
pDst[0] = pDst[1] = pDst[2] = pSrc[0];
if (bAlpha) pDst[3] = pSrc[1];
}
m_image.CreateFromArray(pRGBA, header_info.nWidth, header_info.nHeight, bAlpha ? 32 : 24, header_info.nWidth * (bAlpha ? 4 : 3), true);
delete [] pRGBA;
}
break;
case 2: // Indexed
{
if (!colour_mode_data.ColourData) break;
if (colour_mode_data.nLength != 768) break;
if (mnColourCount == 0) break;
int nPixels = header_info.nWidth * header_info.nHeight;
byte *pRGB = new byte[nPixels * 3];
::memset(pRGB, 0, nPixels * 3);
byte *pSrc = pData, *pDst = pRGB;
for (int i = 0; i < nPixels; i++, pSrc += header_info.nChannels, pDst += 3)
{
int nIndex = *pSrc;
pDst[2] = colour_mode_data.ColourData[nIndex + 0 * 256];
pDst[1] = colour_mode_data.ColourData[nIndex + 1 * 256];
pDst[0] = colour_mode_data.ColourData[nIndex + 2 * 256];
}
m_image.CreateFromArray(pRGB, header_info.nWidth, header_info.nHeight, 24, header_info.nWidth * 3, true);
delete [] pRGB;
}
break;
case 3: // RGB
{
m_image.CreateFromArray(pData, header_info.nWidth, header_info.nHeight, header_info.nChannels == 3 ? 24 : 32, header_info.nWidth * header_info.nChannels, true);
m_image.SwapRGB2BGR();
}
break;
case 4: // CMYK
{
bool bAlpha = header_info.nChannels > 4;
int nPixels = header_info.nWidth * header_info.nHeight;
byte *pRGBA = new byte[nPixels * (bAlpha ? 4 : 3)];
byte *pSrc = pData, *pDst = pRGBA;
double C, M, Y, K;
int nRed, nGreen, nBlue;
for (int i = 0; i < nPixels; i++, pSrc += header_info.nChannels, pDst += bAlpha ? 4 : 3)
{
C = (1.0 - (double)pSrc[0] / 256);
M = (1.0 - (double)pSrc[1] / 256);
Y = (1.0 - (double)pSrc[2] / 256);
K = (1.0 - (double)pSrc[3] / 256);
CMYKToRGB(C, M, Y, K, nRed, nGreen, nBlue);
if (0 > nRed) nRed = 0; else if (255 < nRed) nRed = 255;
if (0 > nGreen) nGreen = 0; else if (255 < nGreen) nGreen = 255;
if (0 > nBlue) nBlue = 0; else if (255 < nBlue) nBlue = 255;
pDst[0] = nBlue; pDst[1] = nGreen; pDst[2] = nRed;
if (bAlpha) pDst[3] = pSrc[4];
}
m_image.CreateFromArray(pRGBA, header_info.nWidth, header_info.nHeight, bAlpha ? 32 : 24, header_info.nWidth * (bAlpha ? 4 : 3), true);
delete [] pRGBA;
}
break;
case 7: // Multichannel
{
if (header_info.nChannels == 0 || header_info.nChannels > 4) break; // ???
int nPixels = header_info.nWidth * header_info.nHeight;
byte *pRGB = new byte[nPixels * 3];
byte *pSrc = pData, *pDst = pRGB;
double C, M, Y, K;
int nRed, nGreen, nBlue;
for (int i = 0; i < nPixels; i++, pSrc += header_info.nChannels, pDst += 3)
{
C = M = Y = K = 0;
C = (1.0 - (double)pSrc[0] / 256);
if (header_info.nChannels > 1) M = (1.0 - (double)pSrc[1] / 256);
if (header_info.nChannels > 2) Y = (1.0 - (double)pSrc[2] / 256);
if (header_info.nChannels > 3) K = (1.0 - (double)pSrc[3] / 256);
CMYKToRGB(C, M, Y, K, nRed, nGreen, nBlue);
if (0 > nRed) nRed = 0; else if (255 < nRed) nRed = 255;
if (0 > nGreen) nGreen = 0; else if (255 < nGreen) nGreen = 255;
if (0 > nBlue) nBlue = 0; else if (255 < nBlue) nBlue = 255;
pDst[0] = nBlue; pDst[1] = nGreen; pDst[2] = nRed;
}
m_image.CreateFromArray(pRGB, header_info.nWidth, header_info.nHeight, 24, header_info.nWidth * 3, true);
delete [] pRGB;
}
break;
case 9: // Lab
{
bool bAlpha = header_info.nChannels > 3;
int nPixels = header_info.nWidth * header_info.nHeight;
byte *pRGBA = new byte[nPixels * (bAlpha ? 4 : 3)];
byte *pSrc = pData, *pDst = pRGBA;
double L_coef = 256.f / 100.f, a_coef = 256.f / 256.f, b_coef = 256.f / 256.f;
int L, a, b;
int nRed, nGreen, nBlue;
for (int i = 0; i < nPixels; i++, pSrc += header_info.nChannels, pDst += bAlpha ? 4 : 3)
{
L = (int)((float)pSrc[0] / L_coef);
a = (int)((float)pSrc[1] / a_coef - 128.0);
b = (int)((float)pSrc[2] / b_coef - 128.0);
LabToRGB(L, a, b, nRed, nGreen, nBlue );
if (0 > nRed) nRed = 0; else if (255 < nRed) nRed = 255;
if (0 > nGreen) nGreen = 0; else if (255 < nGreen) nGreen = 255;
if (0 > nBlue) nBlue = 0; else if (255 < nBlue) nBlue = 255;
pDst[0] = nBlue; pDst[1] = nGreen; pDst[2] = nRed;
if (bAlpha) pDst[3] = pSrc[3];
}
m_image.CreateFromArray(pRGBA, header_info.nWidth, header_info.nHeight, bAlpha ? 32 : 24, header_info.nWidth * (bAlpha ? 4 : 3), true);
delete [] pRGBA;
}
break;
}
}
int CPSD::Load(LPCTSTR szPathName)
{
CxIOFile f;
if (!f.Open(szPathName, _T("rb"))) return -1;
return Load(f);
}
int CPSD::Load(CxFile &f)
{
if (!ReadHeader(f, header_info)) return -2; // Error in header
if (!ReadColourModeData(f, colour_mode_data)) return -3; // Error in ColourMode Data
if (!ReadImageResource(f, image_resource)) return -4; // Error in Image Resource
if (!ReadLayerAndMaskInfoSection(f)) return -5; // Error in Mask Info
if (ReadImageData(f) != 0) return -6; // Error in Image Data
return 0; // all right
}
int CPSD::DecodeRawData( CxFile &pFile)
{
if (header_info.nBitsPerPixel != 8 && header_info.nBitsPerPixel != 16) return -7; // can't read this
int nWidth = header_info.nWidth;
int nHeight = header_info.nHeight;
int bytesPerPixelPerChannel = header_info.nBitsPerPixel / 8;
int nPixels = nWidth * nHeight;
int nTotalBytes = 0;
byte* pData = NULL;
switch ( header_info.nColourMode )
{
case 1: // Grayscale
case 2: // Indexed
case 3: // RGB
case 4: // CMYK
case 8: // Duotone
case 9: // Lab
{
// read RRRRRRRGGGGGGGBBBBBBAAAAAA data
int nAllDataSize = nPixels * bytesPerPixelPerChannel * header_info.nChannels;
byte *pFileData = new byte[nAllDataSize];
::memset(pFileData, 0, nAllDataSize);
if (pFile.Read(pFileData, nAllDataSize, 1) != 1)
{
delete [] pFileData;
return -1; // bad data
}
// and convert them to RGBARGBARGBA data (depends on number of channels)
nTotalBytes = nPixels * header_info.nChannels;
pData = new byte[nTotalBytes];
byte *pSource = pFileData;
for (int nChannel = 0; nChannel < header_info.nChannels; nChannel++)
{
byte *pDest = pData + nChannel;
for (int pos = 0; pos < nPixels; pos++, pDest += header_info.nChannels, pSource += bytesPerPixelPerChannel) *pDest = *pSource;
}
delete [] pFileData;
}
break;
default:
return -1; // unsupported format
}
ProccessBuffer(pData);
delete [] pData;
// dpi related things
int ppm_x = 3780; // 96 dpi
int ppm_y = 3780; // 96 dpi
if (mbResolutionInfoFilled)
{
int nHorResolution = (int)resolution_info.hRes;
int nVertResolution = (int)resolution_info.vRes;
ppm_x = (nHorResolution * 10000) / 254;
ppm_y = (nVertResolution * 10000) / 254;
}
m_image.SetXDPI(ppm_x);
m_image.SetYDPI(ppm_y);
return 0;
}
int CPSD::DecodeRLEData(CxFile & pFile)
{
if (header_info.nBitsPerPixel != 8) return -7; // can't read this
int nWidth = header_info.nWidth;
int nHeight = header_info.nHeight;
int nPixels = nWidth * nHeight;
// The RLE-compressed data is preceeded by a 2-byte data count for each row in the data
// read them and compute size of RLE data
int nLengthDataSize = nHeight * header_info.nChannels * 2;