2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5 % M M AAA TTTTT L AAA BBBB %
6 % MM MM A A T L A A B B %
7 % M M M AAAAA T L AAAAA BBBB %
8 % M M A A T L A A B B %
9 % M M A A T LLLLL A A BBBB %
12 % Read MATLAB Image Format %
19 % Permission is hereby granted, free of charge, to any person obtaining a %
20 % copy of this software and associated documentation files ("ImageMagick"), %
21 % to deal in ImageMagick without restriction, including without limitation %
22 % the rights to use, copy, modify, merge, publish, distribute, sublicense, %
23 % and/or sell copies of ImageMagick, and to permit persons to whom the %
24 % ImageMagick is furnished to do so, subject to the following conditions: %
26 % The above copyright notice and this permission notice shall be included in %
27 % all copies or substantial portions of ImageMagick. %
29 % The software is provided "as is", without warranty of any kind, express or %
30 % implied, including but not limited to the warranties of merchantability, %
31 % fitness for a particular purpose and noninfringement. In no event shall %
32 % ImageMagick Studio be liable for any claim, damages or other liability, %
33 % whether in an action of contract, tort or otherwise, arising from, out of %
34 % or in connection with ImageMagick or the use or other dealings in %
37 % Except as contained in this notice, the name of the ImageMagick Studio %
38 % shall not be used in advertising or otherwise to promote the sale, use or %
39 % other dealings in ImageMagick without prior written authorization from the %
40 % ImageMagick Studio. %
42 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
50 #include "MagickCore/studio.h"
51 #include "MagickCore/attribute.h"
52 #include "MagickCore/blob.h"
53 #include "MagickCore/blob-private.h"
54 #include "MagickCore/cache.h"
55 #include "MagickCore/color-private.h"
56 #include "MagickCore/colormap.h"
57 #include "MagickCore/colorspace-private.h"
58 #include "MagickCore/distort.h"
59 #include "MagickCore/exception.h"
60 #include "MagickCore/exception-private.h"
61 #include "MagickCore/image.h"
62 #include "MagickCore/image-private.h"
63 #include "MagickCore/list.h"
64 #include "MagickCore/magick.h"
65 #include "MagickCore/memory_.h"
66 #include "MagickCore/monitor.h"
67 #include "MagickCore/monitor-private.h"
68 #include "MagickCore/pixel-accessor.h"
69 #include "MagickCore/quantum.h"
70 #include "MagickCore/quantum-private.h"
71 #include "MagickCore/option.h"
72 #include "MagickCore/pixel.h"
73 #include "MagickCore/resource_.h"
74 #include "MagickCore/static.h"
75 #include "MagickCore/string_.h"
76 #include "MagickCore/module.h"
77 #include "MagickCore/transform.h"
78 #include "MagickCore/utility-private.h"
79 #if defined(MAGICKCORE_ZLIB_DELEGATE)
86 static MagickBooleanType
87 WriteMATImage(const ImageInfo *,Image *,ExceptionInfo *);
90 /* Auto coloring method, sorry this creates some artefact inside data
91 MinReal+j*MaxComplex = red MaxReal+j*MaxComplex = black
92 MinReal+j*0 = white MaxReal+j*0 = black
93 MinReal+j*MinComplex = blue MaxReal+j*MinComplex = black
99 unsigned short Version;
100 char EndianIndicator[2];
101 unsigned int DataType;
102 unsigned int ObjectSize;
103 unsigned int unknown1;
104 unsigned int unknown2;
106 unsigned short unknown5;
107 unsigned char StructureFlag;
108 unsigned char StructureClass;
109 unsigned int unknown3;
110 unsigned int unknown4;
111 unsigned int DimFlag;
115 unsigned short Flag1;
116 unsigned short NameFlag;
120 static const char *MonthsTab[12]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
121 static const char *DayOfWTab[7]={"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
122 static const char *OsDesc=
123 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
135 miINT8 = 1, /* 8 bit signed */
136 miUINT8, /* 8 bit unsigned */
137 miINT16, /* 16 bit signed */
138 miUINT16, /* 16 bit unsigned */
139 miINT32, /* 32 bit signed */
140 miUINT32, /* 32 bit unsigned */
141 miSINGLE, /* IEEE 754 single precision float */
143 miDOUBLE, /* IEEE 754 double precision float */
146 miINT64, /* 64 bit signed */
147 miUINT64, /* 64 bit unsigned */
148 miMATRIX, /* MATLAB array */
149 miCOMPRESSED, /* Compressed Data */
150 miUTF8, /* Unicode UTF-8 Encoded Character Data */
151 miUTF16, /* Unicode UTF-16 Encoded Character Data */
152 miUTF32 /* Unicode UTF-32 Encoded Character Data */
157 mxCELL_CLASS=1, /* cell array */
158 mxSTRUCT_CLASS, /* structure */
159 mxOBJECT_CLASS, /* object */
160 mxCHAR_CLASS, /* character array */
161 mxSPARSE_CLASS, /* sparse array */
162 mxDOUBLE_CLASS, /* double precision array */
163 mxSINGLE_CLASS, /* single precision floating point */
164 mxINT8_CLASS, /* 8 bit signed integer */
165 mxUINT8_CLASS, /* 8 bit unsigned integer */
166 mxINT16_CLASS, /* 16 bit signed integer */
167 mxUINT16_CLASS, /* 16 bit unsigned integer */
168 mxINT32_CLASS, /* 32 bit signed integer */
169 mxUINT32_CLASS, /* 32 bit unsigned integer */
170 mxINT64_CLASS, /* 64 bit signed integer */
171 mxUINT64_CLASS, /* 64 bit unsigned integer */
172 mxFUNCTION_CLASS /* Function handle */
175 #define FLAG_COMPLEX 0x8
176 #define FLAG_GLOBAL 0x4
177 #define FLAG_LOGICAL 0x2
179 static const QuantumType z2qtype[4] = {GrayQuantum, BlueQuantum, GreenQuantum, RedQuantum};
182 static void InsertComplexDoubleRow(Image *image,double *p,int y,double MinVal,
183 double MaxVal,ExceptionInfo *exception)
195 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
196 if (q == (Quantum *) NULL)
198 for (x = 0; x < (ssize_t) image->columns; x++)
202 f = (*p / MaxVal) * (QuantumRange-GetPixelRed(image,q));
203 if (f + GetPixelRed(image,q) > QuantumRange)
204 SetPixelRed(image,QuantumRange,q);
206 SetPixelRed(image,GetPixelRed(image,q)+ClampToQuantum(f),q);
207 f = GetPixelGreen(image,q)-f/2.0;
210 SetPixelGreen(image,0,q);
211 SetPixelBlue(image,0,q);
215 SetPixelBlue(image,ClampToQuantum(f),q);
216 SetPixelGreen(image,ClampToQuantum(f),q);
221 f = (*p / MinVal) * (QuantumRange-GetPixelBlue(image,q));
222 if (f+GetPixelBlue(image,q) > QuantumRange)
223 SetPixelBlue(image,QuantumRange,q);
225 SetPixelBlue(image,GetPixelBlue(image,q)+ClampToQuantum(f),q);
226 f = GetPixelGreen(image,q)-f/2.0;
229 SetPixelRed(image,0,q);
230 SetPixelGreen(image,0,q);
234 SetPixelRed(image,ClampToQuantum(f),q);
235 SetPixelGreen(image,ClampToQuantum(f),q);
239 q+=GetPixelChannels(image);
241 if (!SyncAuthenticPixels(image,exception))
247 static void InsertComplexFloatRow(Image *image,float *p,int y,double MinVal,
248 double MaxVal,ExceptionInfo *exception)
259 q = QueueAuthenticPixels(image, 0, y, image->columns, 1,exception);
260 if (q == (Quantum *) NULL)
262 for (x = 0; x < (ssize_t) image->columns; x++)
266 f = (*p / MaxVal) * (QuantumRange-GetPixelRed(image,q));
267 if (f+GetPixelRed(image,q) > QuantumRange)
268 SetPixelRed(image,QuantumRange,q);
270 SetPixelRed(image,GetPixelRed(image,q)+(int) f,q);
271 if ((int) f / 2.0 > GetPixelGreen(image,q))
273 SetPixelGreen(image,0,q);
274 SetPixelBlue(image,0,q);
278 SetPixelBlue(image,GetPixelBlue(image,q)-(int) (f/2.0),q);
279 SetPixelGreen(image,GetPixelBlue(image,q),q);
284 f = (*p / MaxVal) * (QuantumRange - GetPixelBlue(image,q));
285 if (f + GetPixelBlue(image,q) > QuantumRange)
286 SetPixelBlue(image,QuantumRange,q);
288 SetPixelBlue(image,GetPixelBlue(image,q)+
290 if ((int) f / 2.0 > GetPixelGreen(image,q))
292 SetPixelGreen(image,0,q);
293 SetPixelRed(image,0,q);
297 SetPixelRed(image,GetPixelRed(image,q)-(int) (f/2.0),q);
298 SetPixelGreen(image,GetPixelRed(image,q),q);
304 if (!SyncAuthenticPixels(image,exception))
310 /************** READERS ******************/
312 /* This function reads one block of floats*/
313 static void ReadBlobFloatsLSB(Image * image, size_t len, float *data)
317 *data++ = ReadBlobFloat(image);
318 len -= sizeof(float);
321 (void) SeekBlob(image, len, SEEK_CUR);
324 static void ReadBlobFloatsMSB(Image * image, size_t len, float *data)
328 *data++ = ReadBlobFloat(image);
329 len -= sizeof(float);
332 (void) SeekBlob(image, len, SEEK_CUR);
335 /* This function reads one block of doubles*/
336 static void ReadBlobDoublesLSB(Image * image, size_t len, double *data)
340 *data++ = ReadBlobDouble(image);
341 len -= sizeof(double);
344 (void) SeekBlob(image, len, SEEK_CUR);
347 static void ReadBlobDoublesMSB(Image * image, size_t len, double *data)
351 *data++ = ReadBlobDouble(image);
352 len -= sizeof(double);
355 (void) SeekBlob(image, len, SEEK_CUR);
358 /* Calculate minimum and maximum from a given block of data */
359 static void CalcMinMax(Image *image, int endian_indicator, int SizeX, int SizeY, size_t CellType, unsigned ldblk, void *BImgBuff, double *Min, double *Max)
361 MagickOffsetType filepos;
363 void (*ReadBlobDoublesXXX)(Image * image, size_t len, double *data);
364 void (*ReadBlobFloatsXXX)(Image * image, size_t len, float *data);
368 if (endian_indicator == LSBEndian)
370 ReadBlobDoublesXXX = ReadBlobDoublesLSB;
371 ReadBlobFloatsXXX = ReadBlobFloatsLSB;
375 ReadBlobDoublesXXX = ReadBlobDoublesMSB;
376 ReadBlobFloatsXXX = ReadBlobFloatsMSB;
379 filepos = TellBlob(image); /* Please note that file seeking occurs only in the case of doubles */
380 for (i = 0; i < SizeY; i++)
382 if (CellType==miDOUBLE)
384 ReadBlobDoublesXXX(image, ldblk, (double *)BImgBuff);
385 dblrow = (double *)BImgBuff;
388 *Min = *Max = *dblrow;
390 for (x = 0; x < SizeX; x++)
399 if (CellType==miSINGLE)
401 ReadBlobFloatsXXX(image, ldblk, (float *)BImgBuff);
402 fltrow = (float *)BImgBuff;
405 *Min = *Max = *fltrow;
407 for (x = 0; x < (ssize_t) SizeX; x++)
417 (void) SeekBlob(image, filepos, SEEK_SET);
421 static void FixSignedValues(const Image *image,Quantum *q, int y)
425 /* Please note that negative values will overflow
426 Q=8; QuantumRange=255: <0;127> + 127+1 = <128; 255>
427 <-1;-128> + 127+1 = <0; 127> */
428 SetPixelRed(image,GetPixelRed(image,q)+QuantumRange/2+1,q);
429 SetPixelGreen(image,GetPixelGreen(image,q)+QuantumRange/2+1,q);
430 SetPixelBlue(image,GetPixelBlue(image,q)+QuantumRange/2+1,q);
436 /** Fix whole row of logical/binary data. It means pack it. */
437 static void FixLogical(unsigned char *Buff,int ldblk)
439 unsigned char mask=128;
440 unsigned char *BuffL = Buff;
441 unsigned char val = 0;
460 #if defined(MAGICKCORE_ZLIB_DELEGATE)
461 static voidpf AcquireZIPMemory(voidpf context,unsigned int items,
465 return((voidpf) AcquireQuantumMemory(items,size));
468 static void RelinquishZIPMemory(voidpf context,voidpf memory)
471 memory=RelinquishMagickMemory(memory);
475 #if defined(MAGICKCORE_ZLIB_DELEGATE)
476 /** This procedure decompreses an image block for a new MATLAB format. */
477 static Image *decompress_block(Image *orig, unsigned int *Size, ImageInfo *clone_info, ExceptionInfo *exception)
481 void *cache_block, *decompress_block;
490 ssize_t TotalSize = 0;
492 if(clone_info==NULL) return NULL;
493 if(clone_info->file) /* Close file opened from previous transaction. */
495 fclose(clone_info->file);
496 clone_info->file = NULL;
497 (void) remove_utf8(clone_info->filename);
500 cache_block = AcquireQuantumMemory((size_t)(*Size < 16384) ? *Size: 16384,sizeof(unsigned char *));
501 if(cache_block==NULL) return NULL;
502 decompress_block = AcquireQuantumMemory((size_t)(4096),sizeof(unsigned char *));
503 if(decompress_block==NULL)
505 RelinquishMagickMemory(cache_block);
510 file = AcquireUniqueFileResource(clone_info->filename);
512 mat_file = fdopen(file,"w");
515 RelinquishMagickMemory(cache_block);
516 RelinquishMagickMemory(decompress_block);
517 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Cannot create file stream for decompressed image");
521 zip_info.zalloc=AcquireZIPMemory;
522 zip_info.zfree=RelinquishZIPMemory;
523 zip_info.opaque = (voidpf) NULL;
524 zip_status = inflateInit(&zip_info);
525 if (zip_status != Z_OK)
527 RelinquishMagickMemory(cache_block);
528 RelinquishMagickMemory(decompress_block);
529 (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
530 "UnableToUncompressImage","`%s'",clone_info->filename);
531 (void) fclose(mat_file);
532 RelinquishUniqueFileResource(clone_info->filename);
535 /* zip_info.next_out = 8*4;*/
537 zip_info.avail_in = 0;
538 zip_info.total_out = 0;
539 while(*Size>0 && !EOFBlob(orig))
541 magick_size = ReadBlob(orig, (*Size < 16384) ? *Size : 16384, (unsigned char *) cache_block);
542 if (magick_size == 0)
544 zip_info.next_in = (Bytef *) cache_block;
545 zip_info.avail_in = (uInt) magick_size;
547 while(zip_info.avail_in>0)
549 zip_info.avail_out = 4096;
550 zip_info.next_out = (Bytef *) decompress_block;
551 zip_status = inflate(&zip_info,Z_NO_FLUSH);
552 if ((zip_status != Z_OK) && (zip_status != Z_STREAM_END))
554 extent=fwrite(decompress_block, 4096-zip_info.avail_out, 1, mat_file);
556 TotalSize += 4096-zip_info.avail_out;
558 if(zip_status == Z_STREAM_END) goto DblBreak;
560 if ((zip_status != Z_OK) && (zip_status != Z_STREAM_END))
563 *Size -= (unsigned int) magick_size;
567 inflateEnd(&zip_info);
568 (void)fclose(mat_file);
569 RelinquishMagickMemory(cache_block);
570 RelinquishMagickMemory(decompress_block);
573 if((clone_info->file=fopen(clone_info->filename,"rb"))==NULL) goto UnlinkFile;
574 if( (image2 = AcquireImage(clone_info,exception))==NULL ) goto EraseFile;
575 status = OpenBlob(clone_info,image2,ReadBinaryBlobMode,exception);
576 if (status == MagickFalse)
578 DeleteImageFromList(&image2);
580 fclose(clone_info->file);
581 clone_info->file = NULL;
583 RelinquishUniqueFileResource(clone_info->filename);
591 static Image *ReadMATImageV4(const ImageInfo *image_info,Image *image,
592 ExceptionInfo *exception)
595 unsigned char Type[4];
599 unsigned int nameLen;
636 quantum_info=(QuantumInfo *) NULL;
637 (void) SeekBlob(image,0,SEEK_SET);
639 while (EOFBlob(image) == MagickFalse)
644 ldblk=ReadBlobLSBLong(image);
645 if ((ldblk > 9999) || (ldblk < 0))
647 HDR.Type[3]=ldblk % 10; ldblk /= 10; /* T digit */
648 HDR.Type[2]=ldblk % 10; ldblk /= 10; /* P digit */
649 HDR.Type[1]=ldblk % 10; ldblk /= 10; /* O digit */
650 HDR.Type[0]=ldblk; /* M digit */
651 if (HDR.Type[3] != 0)
652 break; /* Data format */
653 if (HDR.Type[2] != 0)
654 break; /* Always 0 */
655 if (HDR.Type[0] == 0)
657 HDR.nRows=ReadBlobLSBLong(image);
658 HDR.nCols=ReadBlobLSBLong(image);
659 HDR.imagf=ReadBlobLSBLong(image);
660 HDR.nameLen=ReadBlobLSBLong(image);
665 HDR.nRows=ReadBlobMSBLong(image);
666 HDR.nCols=ReadBlobMSBLong(image);
667 HDR.imagf=ReadBlobMSBLong(image);
668 HDR.nameLen=ReadBlobMSBLong(image);
671 if ((HDR.imagf != 0) && (HDR.imagf != 1))
673 if (HDR.nameLen > 0xFFFF)
674 return(DestroyImageList(image));
675 for (i=0; i < (ssize_t) HDR.nameLen; i++)
683 byte=ReadBlobByte(image);
686 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
691 image->columns=(size_t) HDR.nRows;
692 image->rows=(size_t) HDR.nCols;
693 if ((image->columns == 0) || (image->rows == 0))
694 return(DestroyImageList(image));
695 if (image_info->ping != MagickFalse)
697 Swap(image->columns,image->rows);
698 if(HDR.imagf==1) ldblk *= 2;
699 SeekBlob(image, HDR.nCols*ldblk, SEEK_CUR);
700 if ((image->columns == 0) || (image->rows == 0))
701 return(image->previous == (Image *) NULL ? DestroyImageList(image)
703 goto skip_reading_current;
705 status=SetImageExtent(image,image->columns,image->rows,exception);
706 if (status == MagickFalse)
707 return(DestroyImageList(image));
708 (void) SetImageBackgroundColor(image,exception);
709 (void) SetImageColorspace(image,GRAYColorspace,exception);
710 quantum_info=AcquireQuantumInfo(image_info,image);
711 if (quantum_info == (QuantumInfo *) NULL)
712 return(DestroyImageList(image));
716 format_type=FloatingPointQuantumFormat;
720 format_type=FloatingPointQuantumFormat;
724 format_type=UnsignedQuantumFormat;
728 format_type=SignedQuantumFormat;
732 format_type=UnsignedQuantumFormat;
736 format_type=UnsignedQuantumFormat;
741 if (HDR.Type[0] != 0)
742 SetQuantumEndian(image,quantum_info,MSBEndian);
743 status=SetQuantumFormat(image,quantum_info,format_type);
744 status=SetQuantumDepth(image,quantum_info,depth);
745 status=SetQuantumEndian(image,quantum_info,endian);
746 SetQuantumScale(quantum_info,1.0);
747 pixels=(unsigned char *) GetQuantumPixels(quantum_info);
748 for (y=0; y < (ssize_t) image->rows; y++)
753 count=ReadBlob(image,depth/8*image->columns,(char *) pixels);
756 q=QueueAuthenticPixels(image,0,image->rows-y-1,image->columns,1,
758 if (q == (Quantum *) NULL)
760 (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
761 GrayQuantum,pixels,exception);
762 if ((HDR.Type[1] == 2) || (HDR.Type[1] == 3))
763 FixSignedValues(image,q,(int) image->columns);
764 if (SyncAuthenticPixels(image,exception) == MagickFalse)
766 if (image->previous == (Image *) NULL)
768 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
770 if (status == MagickFalse)
775 for (y=0; y < (ssize_t) image->rows; y++)
780 count=ReadBlob(image,depth/8*image->columns,(char *) pixels);
783 if (HDR.Type[1] == 0)
784 InsertComplexDoubleRow(image,(double *) pixels,y,0,0,exception);
786 InsertComplexFloatRow(image,(float *) pixels,y,0,0,exception);
788 if (quantum_info != (QuantumInfo *) NULL)
789 quantum_info=DestroyQuantumInfo(quantum_info);
790 if (EOFBlob(image) != MagickFalse)
792 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
796 rotated_image=RotateImage(image,90.0,exception);
797 if (rotated_image != (Image *) NULL)
799 rotated_image->page.x=0;
800 rotated_image->page.y=0;
801 rotated_image->colors = image->colors;
802 DestroyBlob(rotated_image);
803 rotated_image->blob=ReferenceBlob(image->blob);
804 AppendImageToList(&image,rotated_image);
805 DeleteImageFromList(&image);
808 Proceed to next image.
810 if (image_info->number_scenes != 0)
811 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
814 Allocate next image structure.
816 skip_reading_current:
817 AcquireNextImage(image_info,image,exception);
818 if (GetNextImageInList(image) == (Image *) NULL)
823 image=SyncNextImageInList(image);
824 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
826 if (status == MagickFalse)
829 (void) CloseBlob(image);
830 if (status == MagickFalse)
831 return(DestroyImageList(image));
832 return(GetFirstImageInList(image));
836 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
840 % R e a d M A T L A B i m a g e %
844 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
846 % ReadMATImage() reads an MAT X image file and returns it. It
847 % allocates the memory necessary for the new Image structure and returns a
848 % pointer to the new image.
850 % The format of the ReadMATImage method is:
852 % Image *ReadMATImage(const ImageInfo *image_info,ExceptionInfo *exception)
854 % A description of each parameter follows:
856 % o image: Method ReadMATImage returns a pointer to the image after
857 % reading. A null image is returned if there is a memory shortage or if
858 % the image cannot be read.
860 % o image_info: Specifies a pointer to a ImageInfo structure.
862 % o exception: return any errors or warnings in this structure.
865 static Image *ReadMATImage(const ImageInfo *image_info,ExceptionInfo *exception)
867 Image *image, *image2=NULL,
872 MATHeader MATLAB_HDR;
875 QuantumInfo *quantum_info;
876 ImageInfo *clone_info;
879 unsigned char *BImgBuff = NULL;
880 double MinVal, MaxVal;
885 MagickOffsetType filepos=0x80;
887 unsigned int (*ReadBlobXXXLong)(Image *image);
888 unsigned short (*ReadBlobXXXShort)(Image *image);
889 void (*ReadBlobDoublesXXX)(Image * image, size_t len, double *data);
890 void (*ReadBlobFloatsXXX)(Image * image, size_t len, float *data);
893 assert(image_info != (const ImageInfo *) NULL);
894 assert(image_info->signature == MagickCoreSignature);
895 assert(exception != (ExceptionInfo *) NULL);
896 assert(exception->signature == MagickCoreSignature);
897 logging = LogMagickEvent(CoderEvent,GetMagickModule(),"enter");
902 image = AcquireImage(image_info,exception);
903 image2 = (Image *) NULL;
905 status = OpenBlob(image_info, image, ReadBinaryBlobMode, exception);
906 if (status == MagickFalse)
908 image=DestroyImageList(image);
909 return((Image *) NULL);
914 quantum_info=(QuantumInfo *) NULL;
915 clone_info=(ImageInfo *) NULL;
916 if (ReadBlob(image,124,(unsigned char *) &MATLAB_HDR.identific) != 124)
917 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
918 if (strncmp(MATLAB_HDR.identific,"MATLAB",6) != 0)
920 image=ReadMATImageV4(image_info,image,exception);
923 if ((image != image2) && (image2 != (Image *) NULL))
924 image2=DestroyImage(image2);
925 if (clone_info != (ImageInfo *) NULL)
926 clone_info=DestroyImageInfo(clone_info);
927 return((Image *) NULL);
931 MATLAB_HDR.Version = ReadBlobLSBShort(image);
932 if(ReadBlob(image,2,(unsigned char *) &MATLAB_HDR.EndianIndicator) != 2)
933 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
936 (void) LogMagickEvent(CoderEvent,GetMagickModule()," Endian %c%c",
937 MATLAB_HDR.EndianIndicator[0],MATLAB_HDR.EndianIndicator[1]);
938 if (!strncmp(MATLAB_HDR.EndianIndicator, "IM", 2))
940 ReadBlobXXXLong = ReadBlobLSBLong;
941 ReadBlobXXXShort = ReadBlobLSBShort;
942 ReadBlobDoublesXXX = ReadBlobDoublesLSB;
943 ReadBlobFloatsXXX = ReadBlobFloatsLSB;
944 image->endian = LSBEndian;
946 else if (!strncmp(MATLAB_HDR.EndianIndicator, "MI", 2))
948 ReadBlobXXXLong = ReadBlobMSBLong;
949 ReadBlobXXXShort = ReadBlobMSBShort;
950 ReadBlobDoublesXXX = ReadBlobDoublesMSB;
951 ReadBlobFloatsXXX = ReadBlobFloatsMSB;
952 image->endian = MSBEndian;
957 if ((image != image2) && (image2 != (Image *) NULL))
958 image2=DestroyImage(image2);
959 if (clone_info != (ImageInfo *) NULL)
960 clone_info=DestroyImageInfo(clone_info);
961 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
964 filepos = TellBlob(image);
965 while(!EOFBlob(image)) /* object parser loop */
968 if (filepos != (unsigned int) filepos)
970 if(SeekBlob(image,filepos,SEEK_SET) != filepos) break;
971 /* printf("pos=%X\n",TellBlob(image)); */
973 MATLAB_HDR.DataType = ReadBlobXXXLong(image);
974 if(EOFBlob(image)) break;
975 MATLAB_HDR.ObjectSize = ReadBlobXXXLong(image);
976 if(EOFBlob(image)) break;
977 if((MagickSizeType) (MATLAB_HDR.ObjectSize+filepos) > GetBlobSize(image))
979 filepos += (MagickOffsetType) MATLAB_HDR.ObjectSize + 4 + 4;
981 if (clone_info != (ImageInfo *) NULL)
982 clone_info=DestroyImageInfo(clone_info);
983 clone_info=CloneImageInfo(image_info);
984 if ((image != image2) && (image2 != (Image *) NULL))
985 image2=DestroyImage(image2);
987 #if defined(MAGICKCORE_ZLIB_DELEGATE)
988 if(MATLAB_HDR.DataType == miCOMPRESSED)
990 image2 = decompress_block(image,&MATLAB_HDR.ObjectSize,clone_info,exception);
991 if(image2==NULL) continue;
992 MATLAB_HDR.DataType = ReadBlobXXXLong(image2); /* replace compressed object type. */
996 if (MATLAB_HDR.DataType != miMATRIX)
998 clone_info=DestroyImageInfo(clone_info);
999 #if defined(MAGICKCORE_ZLIB_DELEGATE)
1000 if (image2 != image)
1001 DeleteImageFromList(&image2);
1003 continue; /* skip another objects. */
1006 MATLAB_HDR.unknown1 = ReadBlobXXXLong(image2);
1007 MATLAB_HDR.unknown2 = ReadBlobXXXLong(image2);
1009 MATLAB_HDR.unknown5 = ReadBlobXXXLong(image2);
1010 MATLAB_HDR.StructureClass = MATLAB_HDR.unknown5 & 0xFF;
1011 MATLAB_HDR.StructureFlag = (MATLAB_HDR.unknown5>>8) & 0xFF;
1013 MATLAB_HDR.unknown3 = ReadBlobXXXLong(image2);
1015 MATLAB_HDR.unknown4 = ReadBlobXXXLong(image2); /* ??? don't understand why ?? */
1016 MATLAB_HDR.unknown4 = ReadBlobXXXLong(image2);
1017 MATLAB_HDR.DimFlag = ReadBlobXXXLong(image2);
1018 MATLAB_HDR.SizeX = ReadBlobXXXLong(image2);
1019 MATLAB_HDR.SizeY = ReadBlobXXXLong(image2);
1022 switch(MATLAB_HDR.DimFlag)
1024 case 8: z2=z=1; break; /* 2D matrix*/
1025 case 12: z2=z = ReadBlobXXXLong(image2); /* 3D matrix RGB*/
1026 (void) ReadBlobXXXLong(image2);
1029 if (clone_info != (ImageInfo *) NULL)
1030 clone_info=DestroyImageInfo(clone_info);
1031 if ((image != image2) && (image2 != (Image *) NULL))
1032 image2=DestroyImage(image2);
1033 ThrowReaderException(CoderError,
1034 "MultidimensionalMatricesAreNotSupported");
1037 case 16: z2=z = ReadBlobXXXLong(image2); /* 4D matrix animation */
1040 if (clone_info != (ImageInfo *) NULL)
1041 clone_info=DestroyImageInfo(clone_info);
1042 if ((image != image2) && (image2 != (Image *) NULL))
1043 image2=DestroyImage(image2);
1044 ThrowReaderException(CoderError,
1045 "MultidimensionalMatricesAreNotSupported");
1047 Frames = ReadBlobXXXLong(image2);
1050 if (clone_info != (ImageInfo *) NULL)
1051 clone_info=DestroyImageInfo(clone_info);
1052 if ((image != image2) && (image2 != (Image *) NULL))
1053 image2=DestroyImage(image2);
1054 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
1056 if (AcquireMagickResource(ListLengthResource,Frames) == MagickFalse)
1058 if (clone_info != (ImageInfo *) NULL)
1059 clone_info=DestroyImageInfo(clone_info);
1060 if ((image != image2) && (image2 != (Image *) NULL))
1061 image2=DestroyImage(image2);
1062 ThrowReaderException(ResourceLimitError,"ListLengthExceedsLimit");
1066 if (clone_info != (ImageInfo *) NULL)
1067 clone_info=DestroyImageInfo(clone_info);
1068 if ((image != image2) && (image2 != (Image *) NULL))
1069 image2=DestroyImage(image2);
1070 ThrowReaderException(CoderError, "MultidimensionalMatricesAreNotSupported");
1073 MATLAB_HDR.Flag1 = ReadBlobXXXShort(image2);
1074 MATLAB_HDR.NameFlag = ReadBlobXXXShort(image2);
1076 if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),
1077 "MATLAB_HDR.StructureClass %d",MATLAB_HDR.StructureClass);
1078 if (MATLAB_HDR.StructureClass != mxCHAR_CLASS &&
1079 MATLAB_HDR.StructureClass != mxSINGLE_CLASS && /* float + complex float */
1080 MATLAB_HDR.StructureClass != mxDOUBLE_CLASS && /* double + complex double */
1081 MATLAB_HDR.StructureClass != mxINT8_CLASS &&
1082 MATLAB_HDR.StructureClass != mxUINT8_CLASS && /* uint8 + uint8 3D */
1083 MATLAB_HDR.StructureClass != mxINT16_CLASS &&
1084 MATLAB_HDR.StructureClass != mxUINT16_CLASS && /* uint16 + uint16 3D */
1085 MATLAB_HDR.StructureClass != mxINT32_CLASS &&
1086 MATLAB_HDR.StructureClass != mxUINT32_CLASS && /* uint32 + uint32 3D */
1087 MATLAB_HDR.StructureClass != mxINT64_CLASS &&
1088 MATLAB_HDR.StructureClass != mxUINT64_CLASS) /* uint64 + uint64 3D */
1090 if ((image2 != (Image*) NULL) && (image2 != image))
1093 DeleteImageFromList(&image2);
1095 if (clone_info != (ImageInfo *) NULL)
1096 clone_info=DestroyImageInfo(clone_info);
1097 ThrowReaderException(CoderError,"UnsupportedCellTypeInTheMatrix");
1100 switch (MATLAB_HDR.NameFlag)
1103 size = ReadBlobXXXLong(image2); /* Object name string size */
1104 size = 4 * (((size_t) size + 3 + 1) / 4);
1105 (void) SeekBlob(image2, size, SEEK_CUR);
1111 (void) ReadBlob(image2, 4, (unsigned char *) &size); /* Object name string */
1117 CellType = ReadBlobXXXLong(image2); /* Additional object type */
1119 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
1120 "MATLAB_HDR.CellType: %.20g",(double) CellType);
1122 (void) ReadBlob(image2, 4, (unsigned char *) &size); /* data size */
1130 if(MATLAB_HDR.StructureFlag & FLAG_LOGICAL)
1133 image->depth = 8; /* Byte type cell */
1134 ldblk = (ssize_t) MATLAB_HDR.SizeX;
1139 image->depth = 16; /* Word type cell */
1140 ldblk = (ssize_t) (2 * MATLAB_HDR.SizeX);
1145 image->depth = 32; /* Dword type cell */
1146 ldblk = (ssize_t) (4 * MATLAB_HDR.SizeX);
1151 image->depth = 64; /* Qword type cell */
1152 ldblk = (ssize_t) (8 * MATLAB_HDR.SizeX);
1156 image->depth = 32; /* double type cell */
1157 (void) SetImageOption(clone_info,"quantum:format","floating-point");
1158 if (MATLAB_HDR.StructureFlag & FLAG_COMPLEX)
1159 { /* complex float type cell */
1161 ldblk = (ssize_t) (4 * MATLAB_HDR.SizeX);
1165 image->depth = 64; /* double type cell */
1166 (void) SetImageOption(clone_info,"quantum:format","floating-point");
1167 DisableMSCWarning(4127)
1168 if (sizeof(double) != 8)
1171 if (clone_info != (ImageInfo *) NULL)
1172 clone_info=DestroyImageInfo(clone_info);
1173 if ((image != image2) && (image2 != (Image *) NULL))
1174 image2=DestroyImage(image2);
1175 ThrowReaderException(CoderError, "IncompatibleSizeOfDouble");
1177 if (MATLAB_HDR.StructureFlag & FLAG_COMPLEX)
1178 { /* complex double type cell */
1180 ldblk = (ssize_t) (8 * MATLAB_HDR.SizeX);
1183 if ((image != image2) && (image2 != (Image *) NULL))
1184 image2=DestroyImage(image2);
1186 clone_info=DestroyImageInfo(clone_info);
1187 ThrowReaderException(CoderError, "UnsupportedCellTypeInTheMatrix");
1190 image->columns = MATLAB_HDR.SizeX;
1191 image->rows = MATLAB_HDR.SizeY;
1192 image->colors = GetQuantumRange(image->depth);
1193 if (image->columns == 0 || image->rows == 0)
1195 if((unsigned int)ldblk*MATLAB_HDR.SizeY > MATLAB_HDR.ObjectSize)
1197 /* Image is gray when no complex flag is set and 2D Matrix */
1198 if ((MATLAB_HDR.DimFlag == 8) &&
1199 ((MATLAB_HDR.StructureFlag & FLAG_COMPLEX) == 0))
1201 image->type=GrayscaleType;
1202 SetImageColorspace(image,GRAYColorspace,exception);
1207 If ping is true, then only set image size and colors without
1208 reading any image data.
1210 if (image_info->ping)
1212 size_t temp = image->columns;
1213 image->columns = image->rows;
1215 goto done_reading; /* !!!!!! BAD !!!! */
1217 status=SetImageExtent(image,image->columns,image->rows,exception);
1218 if (status == MagickFalse)
1220 if (clone_info != (ImageInfo *) NULL)
1221 clone_info=DestroyImageInfo(clone_info);
1222 if ((image != image2) && (image2 != (Image *) NULL))
1223 image2=DestroyImage(image2);
1224 return(DestroyImageList(image));
1226 (void) SetImageBackgroundColor(image,exception);
1227 quantum_info=AcquireQuantumInfo(clone_info,image);
1228 if (quantum_info == (QuantumInfo *) NULL)
1230 if (clone_info != (ImageInfo *) NULL)
1231 clone_info=DestroyImageInfo(clone_info);
1232 if ((image != image2) && (image2 != (Image *) NULL))
1233 image2=DestroyImage(image2);
1234 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
1237 /* ----- Load raster data ----- */
1238 BImgBuff = (unsigned char *) AcquireQuantumMemory((size_t) (ldblk),sizeof(double)); /* Ldblk was set in the check phase */
1239 if (BImgBuff == NULL)
1241 if (clone_info != (ImageInfo *) NULL)
1242 clone_info=DestroyImageInfo(clone_info);
1243 if ((image != image2) && (image2 != (Image *) NULL))
1244 image2=DestroyImage(image2);
1245 if (quantum_info != (QuantumInfo *) NULL)
1246 quantum_info=DestroyQuantumInfo(quantum_info);
1247 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
1249 (void) memset(BImgBuff,0,ldblk*sizeof(double));
1253 if (CellType==miDOUBLE || CellType==miSINGLE) /* Find Min and Max Values for floats */
1255 CalcMinMax(image2,image_info->endian,MATLAB_HDR.SizeX,MATLAB_HDR.SizeY,
1256 CellType,ldblk,BImgBuff,&quantum_info->minimum,
1257 &quantum_info->maximum);
1260 /* Main loop for reading all scanlines */
1261 if(z==1) z=0; /* read grey scanlines */
1262 /* else read color scanlines */
1265 for (i = 0; i < (ssize_t) MATLAB_HDR.SizeY; i++)
1267 q=GetAuthenticPixels(image,0,MATLAB_HDR.SizeY-i-1,image->columns,1,exception);
1268 if (q == (Quantum *) NULL)
1270 if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),
1271 " MAT set image pixels returns unexpected NULL on a row %u.", (unsigned)(MATLAB_HDR.SizeY-i-1));
1272 goto done_reading; /* Skip image rotation, when cannot set image pixels */
1274 if(ReadBlob(image2,ldblk,(unsigned char *)BImgBuff) != (ssize_t) ldblk)
1276 if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),
1277 " MAT cannot read scanrow %u from a file.", (unsigned)(MATLAB_HDR.SizeY-i-1));
1280 if((CellType==miINT8 || CellType==miUINT8) && (MATLAB_HDR.StructureFlag & FLAG_LOGICAL))
1282 FixLogical((unsigned char *)BImgBuff,ldblk);
1283 if(ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,z2qtype[z],BImgBuff,exception) <= 0)
1285 ImportQuantumPixelsFailed:
1286 if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),
1287 " MAT failed to ImportQuantumPixels for a row %u", (unsigned)(MATLAB_HDR.SizeY-i-1));
1293 if(ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,z2qtype[z],BImgBuff,exception) <= 0)
1294 goto ImportQuantumPixelsFailed;
1297 if (z<=1 && /* fix only during a last pass z==0 || z==1 */
1298 (CellType==miINT8 || CellType==miINT16 || CellType==miINT32 || CellType==miINT64))
1299 FixSignedValues(image,q,MATLAB_HDR.SizeX);
1302 if (!SyncAuthenticPixels(image,exception))
1304 if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),
1305 " MAT failed to sync image pixels for a row %u", (unsigned)(MATLAB_HDR.SizeY-i-1));
1313 /* Read complex part of numbers here */
1314 if (MATLAB_HDR.StructureFlag & FLAG_COMPLEX)
1315 { /* Find Min and Max Values for complex parts of floats */
1316 CellType = ReadBlobXXXLong(image2); /* Additional object type */
1317 i = ReadBlobXXXLong(image2); /* size of a complex part - toss away*/
1319 if (CellType==miDOUBLE || CellType==miSINGLE)
1321 CalcMinMax(image2, image_info->endian, MATLAB_HDR.SizeX, MATLAB_HDR.SizeY, CellType, ldblk, BImgBuff, &MinVal, &MaxVal);
1324 if (CellType==miDOUBLE)
1325 for (i = 0; i < (ssize_t) MATLAB_HDR.SizeY; i++)
1327 ReadBlobDoublesXXX(image2, ldblk, (double *)BImgBuff);
1328 InsertComplexDoubleRow(image, (double *)BImgBuff, i, MinVal, MaxVal,
1332 if (CellType==miSINGLE)
1333 for (i = 0; i < (ssize_t) MATLAB_HDR.SizeY; i++)
1335 ReadBlobFloatsXXX(image2, ldblk, (float *)BImgBuff);
1336 InsertComplexFloatRow(image,(float *)BImgBuff,i,MinVal,MaxVal,
1341 /* Image is gray when no complex flag is set and 2D Matrix AGAIN!!! */
1342 if ((MATLAB_HDR.DimFlag == 8) &&
1343 ((MATLAB_HDR.StructureFlag & FLAG_COMPLEX) == 0))
1344 image->type=GrayscaleType;
1345 if (image->depth == 1)
1346 image->type=BilevelType;
1349 image2 = NULL; /* Remove shadow copy to an image before rotation. */
1352 rotated_image = RotateImage(image, 90.0, exception);
1353 if (rotated_image != (Image *) NULL)
1355 /* Remove page offsets added by RotateImage */
1356 rotated_image->page.x=0;
1357 rotated_image->page.y=0;
1358 rotated_image->colors = image->colors;
1359 DestroyBlob(rotated_image);
1360 rotated_image->blob=ReferenceBlob(image->blob);
1361 AppendImageToList(&image,rotated_image);
1362 DeleteImageFromList(&image);
1370 DeleteImageFromList(&image2);
1373 if(clone_info->file)
1375 fclose(clone_info->file);
1376 clone_info->file = NULL;
1377 (void) remove_utf8(clone_info->filename);
1381 if (EOFBlob(image) != MagickFalse)
1384 /* Allocate next image structure. */
1385 AcquireNextImage(image_info,image,exception);
1386 if (image->next == (Image *) NULL) break;
1387 image=SyncNextImageInList(image);
1388 image->columns=image->rows=0;
1391 /* row scan buffer is no longer needed */
1392 RelinquishMagickMemory(BImgBuff);
1394 if (quantum_info != (QuantumInfo *) NULL)
1395 quantum_info=DestroyQuantumInfo(quantum_info);
1400 if(image2==NULL) image2 = image;
1401 if(!EOFBlob(image) && TellBlob(image)<filepos)
1404 if ((image2!=NULL) && (image2!=image)) /* Does shadow temporary decompressed image exist? */
1406 /* CloseBlob(image2); */
1407 DeleteImageFromList(&image2);
1410 if(clone_info->file)
1412 fclose(clone_info->file);
1413 clone_info->file = NULL;
1414 (void) remove_utf8(clone_info->filename);
1420 clone_info=DestroyImageInfo(clone_info);
1423 RelinquishMagickMemory(BImgBuff);
1424 if (quantum_info != (QuantumInfo *) NULL)
1425 quantum_info=DestroyQuantumInfo(quantum_info);
1435 Rewind list, removing any empty images while rewinding.
1439 while (p != (Image *) NULL)
1442 if ((p->rows == 0) || (p->columns == 0)) {
1445 image2=(Image *) NULL;
1446 DeleteImageFromList(&tmp);
1456 for (p=image; p != (Image *) NULL; p=p->next)
1460 if(clone_info != NULL) /* cleanup garbage file from compression */
1462 if(clone_info->file)
1464 fclose(clone_info->file);
1465 clone_info->file = NULL;
1466 (void) remove_utf8(clone_info->filename);
1468 DestroyImageInfo(clone_info);
1471 if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),"return");
1472 if ((image != image2) && (image2 != (Image *) NULL))
1473 image2=DestroyImage(image2);
1474 if (image == (Image *) NULL)
1475 ThrowReaderException(CorruptImageError,"ImproperImageHeader")
1480 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1484 % R e g i s t e r M A T I m a g e %
1488 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1490 % Method RegisterMATImage adds attributes for the MAT image format to
1491 % the list of supported formats. The attributes include the image format
1492 % tag, a method to read and/or write the format, whether the format
1493 % supports the saving of more than one frame to the same file or blob,
1494 % whether the format supports native in-memory I/O, and a brief
1495 % description of the format.
1497 % The format of the RegisterMATImage method is:
1499 % size_t RegisterMATImage(void)
1502 ModuleExport size_t RegisterMATImage(void)
1507 entry=AcquireMagickInfo("MAT","MAT","MATLAB level 5 image format");
1508 entry->decoder=(DecodeImageHandler *) ReadMATImage;
1509 entry->encoder=(EncodeImageHandler *) WriteMATImage;
1510 entry->flags^=CoderBlobSupportFlag;
1511 entry->flags|=CoderDecoderSeekableStreamFlag;
1512 (void) RegisterMagickInfo(entry);
1513 return(MagickImageCoderSignature);
1517 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1521 % U n r e g i s t e r M A T I m a g e %
1525 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1527 % Method UnregisterMATImage removes format registrations made by the
1528 % MAT module from the list of supported formats.
1530 % The format of the UnregisterMATImage method is:
1532 % UnregisterMATImage(void)
1535 ModuleExport void UnregisterMATImage(void)
1537 (void) UnregisterMagickInfo("MAT");
1541 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1545 % W r i t e M A T L A B I m a g e %
1549 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1551 % Function WriteMATImage writes an Matlab matrix to a file.
1553 % The format of the WriteMATImage method is:
1555 % MagickBooleanType WriteMATImage(const ImageInfo *image_info,
1556 % Image *image,ExceptionInfo *exception)
1558 % A description of each parameter follows.
1560 % o image_info: Specifies a pointer to a ImageInfo structure.
1562 % o image: A pointer to an Image structure.
1564 % o exception: return any errors or warnings in this structure.
1567 static MagickBooleanType WriteMATImage(const ImageInfo *image_info,Image *image,
1568 ExceptionInfo *exception)
1589 Open output image file.
1591 assert(image_info != (const ImageInfo *) NULL);
1592 assert(image_info->signature == MagickCoreSignature);
1593 assert(image != (Image *) NULL);
1594 assert(image->signature == MagickCoreSignature);
1595 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"enter MAT");
1596 assert(exception != (ExceptionInfo *) NULL);
1597 assert(exception->signature == MagickCoreSignature);
1598 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
1599 if (status == MagickFalse)
1600 return(MagickFalse);
1603 current_time=time((time_t *) NULL);
1604 #if defined(MAGICKCORE_HAVE_LOCALTIME_R)
1605 (void) localtime_r(¤t_time,&local_time);
1607 (void) memcpy(&local_time,localtime(¤t_time),sizeof(local_time));
1609 (void) memset(MATLAB_HDR,' ',MagickMin(sizeof(MATLAB_HDR),124));
1610 FormatLocaleString(MATLAB_HDR,sizeof(MATLAB_HDR),
1611 "MATLAB 5.0 MAT-file, Platform: %s, Created on: %s %s %2d %2d:%2d:%2d %d",
1612 OsDesc,DayOfWTab[local_time.tm_wday],MonthsTab[local_time.tm_mon],
1613 local_time.tm_mday,local_time.tm_hour,local_time.tm_min,
1614 local_time.tm_sec,local_time.tm_year+1900);
1617 MATLAB_HDR[0x7E]='I';
1618 MATLAB_HDR[0x7F]='M';
1619 (void) WriteBlob(image,sizeof(MATLAB_HDR),(unsigned char *) MATLAB_HDR);
1621 imageListLength=GetImageListLength(image);
1642 (void) TransformImageColorspace(image,sRGBColorspace,exception);
1643 is_gray=SetImageGray(image,exception);
1644 z=(is_gray != MagickFalse) ? 0 : 3;
1649 data_size = image->rows * image->columns;
1650 if (is_gray == MagickFalse)
1652 padding=((unsigned char)(data_size-1) & 0x7) ^ 0x7;
1654 (void) WriteBlobLSBLong(image,miMATRIX);
1655 (void) WriteBlobLSBLong(image,(unsigned int) data_size+padding+
1656 ((is_gray != MagickFalse) ? 48 : 56));
1657 (void) WriteBlobLSBLong(image,0x6); /* 0x88 */
1658 (void) WriteBlobLSBLong(image,0x8); /* 0x8C */
1659 (void) WriteBlobLSBLong(image,0x6); /* 0x90 */
1660 (void) WriteBlobLSBLong(image,0);
1661 (void) WriteBlobLSBLong(image,0x5); /* 0x98 */
1662 (void) WriteBlobLSBLong(image,(is_gray != MagickFalse) ? 0x8 : 0xC); /* 0x9C - DimFlag */
1663 (void) WriteBlobLSBLong(image,(unsigned int) image->rows); /* x: 0xA0 */
1664 (void) WriteBlobLSBLong(image,(unsigned int) image->columns); /* y: 0xA4 */
1665 if (is_gray == MagickFalse)
1667 (void) WriteBlobLSBLong(image,3); /* z: 0xA8 */
1668 (void) WriteBlobLSBLong(image,0);
1670 (void) WriteBlobLSBShort(image,1); /* 0xB0 */
1671 (void) WriteBlobLSBShort(image,1); /* 0xB2 */
1672 (void) WriteBlobLSBLong(image,'M'); /* 0xB4 */
1673 (void) WriteBlobLSBLong(image,0x2); /* 0xB8 */
1674 (void) WriteBlobLSBLong(image,(unsigned int) data_size); /* 0xBC */
1679 quantum_info=AcquireQuantumInfo(image_info,image);
1680 if (quantum_info == (QuantumInfo *) NULL)
1681 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
1682 pixels=(unsigned char *) GetQuantumPixels(quantum_info);
1691 for (y=0; y < (ssize_t)image->columns; y++)
1693 p=GetVirtualPixels(image,y,0,1,image->rows,exception);
1694 if (p == (const Quantum *) NULL)
1696 (void) ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
1697 z2qtype[z],pixels,exception);
1698 (void) WriteBlob(image,image->rows,pixels);
1700 if (SyncAuthenticPixels(image,exception) == MagickFalse)
1703 while (padding-- > 0)
1704 (void) WriteBlobByte(image,0);
1705 quantum_info=DestroyQuantumInfo(quantum_info);
1706 if (GetNextImageInList(image) == (Image *) NULL)
1708 image=SyncNextImageInList(image);
1709 status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
1710 if (status == MagickFalse)
1712 } while (image_info->adjoin != MagickFalse);
1713 (void) CloseBlob(image);