2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
10 % IIIII CCCC OOO N N %
13 % Read Microsoft Windows Icon Format %
20 % Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
42 #include "MagickCore/studio.h"
43 #include "MagickCore/artifact.h"
44 #include "MagickCore/blob.h"
45 #include "MagickCore/blob-private.h"
46 #include "MagickCore/cache.h"
47 #include "MagickCore/colormap.h"
48 #include "MagickCore/colorspace.h"
49 #include "MagickCore/colorspace-private.h"
50 #include "MagickCore/exception.h"
51 #include "MagickCore/exception-private.h"
52 #include "MagickCore/image.h"
53 #include "MagickCore/image-private.h"
54 #include "MagickCore/list.h"
55 #include "MagickCore/log.h"
56 #include "MagickCore/magick.h"
57 #include "MagickCore/memory_.h"
58 #include "MagickCore/monitor.h"
59 #include "MagickCore/monitor-private.h"
60 #include "MagickCore/nt-base-private.h"
61 #include "MagickCore/option.h"
62 #include "MagickCore/pixel-accessor.h"
63 #include "MagickCore/quantize.h"
64 #include "MagickCore/quantum-private.h"
65 #include "MagickCore/static.h"
66 #include "MagickCore/string_.h"
67 #include "MagickCore/module.h"
72 #if !defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__MINGW32__) || defined(__MINGW64__)
75 #define BI_BITFIELDS 3
82 typedef struct _IconEntry
99 typedef struct _IconFile
110 typedef struct _IconInfo
143 Forward declaractions.
146 *AutoResizeImage(const Image *,const char *,MagickOffsetType *,
149 static MagickBooleanType
150 WriteICONImage(const ImageInfo *,Image *,ExceptionInfo *);
152 Image *AutoResizeImage(const Image *image,const char *option,
153 MagickOffsetType *count,ExceptionInfo *exception)
171 sizes[MAX_SIZES]={256,192,128,96,64,48,40,32,24,16};
177 while (*p != '\0' && i < MAX_SIZES)
182 while ((isspace((int) ((unsigned char) *p)) != 0))
185 size=(size_t)strtol(p,&q,10);
186 if ((p == q) || (size < 16) || (size > 256))
187 return((Image *) NULL);
192 while ((isspace((int) ((unsigned char) *p)) != 0) || (*p == ','))
199 for (i=0; i < *count; i++)
201 resized=ResizeImage(image,sizes[i],sizes[i],image->filter,exception);
202 if (resized == (Image *) NULL)
203 return(DestroyImageList(images));
205 if (images == (Image *) NULL)
208 AppendImageToList(&images,resized);
214 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
218 % R e a d I C O N I m a g e %
222 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
224 % ReadICONImage() reads a Microsoft icon image file and returns it. It
225 % allocates the memory necessary for the new Image structure and returns a
226 % pointer to the new image.
228 % The format of the ReadICONImage method is:
230 % Image *ReadICONImage(const ImageInfo *image_info,
231 % ExceptionInfo *exception)
233 % A description of each parameter follows:
235 % o image_info: the image info.
237 % o exception: return any errors or warnings in this structure.
240 static Image *ReadICONImage(const ImageInfo *image_info,
241 ExceptionInfo *exception)
262 register unsigned char
280 assert(image_info != (const ImageInfo *) NULL);
281 assert(image_info->signature == MagickCoreSignature);
282 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image_info->filename);
283 assert(exception != (ExceptionInfo *) NULL);
284 assert(exception->signature == MagickCoreSignature);
285 image=AcquireImage(image_info,exception);
286 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
287 if (status == MagickFalse)
289 image=DestroyImageList(image);
290 return((Image *) NULL);
292 icon_file.reserved=(short) ReadBlobLSBShort(image);
293 icon_file.resource_type=(short) ReadBlobLSBShort(image);
294 icon_file.count=(short) ReadBlobLSBShort(image);
295 if ((icon_file.reserved != 0) ||
296 ((icon_file.resource_type != 1) && (icon_file.resource_type != 2)) ||
297 (icon_file.count > MaxIcons))
298 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
299 for (i=0; i < icon_file.count; i++)
301 icon_file.directory[i].width=(unsigned char) ReadBlobByte(image);
302 icon_file.directory[i].height=(unsigned char) ReadBlobByte(image);
303 icon_file.directory[i].colors=(unsigned char) ReadBlobByte(image);
304 icon_file.directory[i].reserved=(unsigned char) ReadBlobByte(image);
305 icon_file.directory[i].planes=(unsigned short) ReadBlobLSBShort(image);
306 icon_file.directory[i].bits_per_pixel=(unsigned short)
307 ReadBlobLSBShort(image);
308 icon_file.directory[i].size=ReadBlobLSBLong(image);
309 icon_file.directory[i].offset=ReadBlobLSBLong(image);
310 if (EOFBlob(image) != MagickFalse)
313 if (EOFBlob(image) != MagickFalse)
314 ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
316 for (i=0; i < icon_file.count; i++)
319 Verify Icon identifier.
321 offset=(ssize_t) SeekBlob(image,(MagickOffsetType)
322 icon_file.directory[i].offset,SEEK_SET);
324 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
325 icon_info.size=ReadBlobLSBLong(image);
326 icon_info.width=(unsigned char) ((int) ReadBlobLSBLong(image));
327 icon_info.height=(unsigned char) ((int) ReadBlobLSBLong(image)/2);
328 icon_info.planes=ReadBlobLSBShort(image);
329 icon_info.bits_per_pixel=ReadBlobLSBShort(image);
330 if (EOFBlob(image) != MagickFalse)
332 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
336 if (((icon_info.planes == 18505) && (icon_info.bits_per_pixel == 21060)) ||
337 (icon_info.size == 0x474e5089))
352 Icon image encoded as a compressed PNG image.
354 length=icon_file.directory[i].size;
355 if ((length < 16) || (~length < 16))
356 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
357 png=(unsigned char *) AcquireQuantumMemory(length+16,sizeof(*png));
358 if (png == (unsigned char *) NULL)
359 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
360 (void) CopyMagickMemory(png,"\211PNG\r\n\032\n\000\000\000\015",12);
361 png[12]=(unsigned char) icon_info.planes;
362 png[13]=(unsigned char) (icon_info.planes >> 8);
363 png[14]=(unsigned char) icon_info.bits_per_pixel;
364 png[15]=(unsigned char) (icon_info.bits_per_pixel >> 8);
365 count=ReadBlob(image,length-16,png+16);
366 icon_image=(Image *) NULL;
369 read_info=CloneImageInfo(image_info);
370 (void) CopyMagickString(read_info->magick,"PNG",MagickPathExtent);
371 icon_image=BlobToImage(read_info,png,length+16,exception);
372 read_info=DestroyImageInfo(read_info);
374 png=(unsigned char *) RelinquishMagickMemory(png);
375 if (icon_image == (Image *) NULL)
377 if (count != (ssize_t) (length-16))
378 ThrowReaderException(CorruptImageError,
379 "InsufficientImageDataInFile");
380 image=DestroyImageList(image);
381 return((Image *) NULL);
383 DestroyBlob(icon_image);
384 icon_image->blob=ReferenceBlob(image->blob);
385 ReplaceImageInList(&image,icon_image);
389 if (icon_info.bits_per_pixel > 32)
390 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
391 icon_info.compression=ReadBlobLSBLong(image);
392 icon_info.image_size=ReadBlobLSBLong(image);
393 icon_info.x_pixels=ReadBlobLSBLong(image);
394 icon_info.y_pixels=ReadBlobLSBLong(image);
395 icon_info.number_colors=ReadBlobLSBLong(image);
396 icon_info.colors_important=ReadBlobLSBLong(image);
397 image->alpha_trait=BlendPixelTrait;
398 image->columns=(size_t) icon_file.directory[i].width;
399 if ((ssize_t) image->columns > icon_info.width)
400 image->columns=(size_t) icon_info.width;
401 if (image->columns == 0)
403 image->rows=(size_t) icon_file.directory[i].height;
404 if ((ssize_t) image->rows > icon_info.height)
405 image->rows=(size_t) icon_info.height;
406 if (image->rows == 0)
408 image->depth=icon_info.bits_per_pixel;
409 if (image->debug != MagickFalse)
411 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
412 " scene = %.20g",(double) i);
413 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
414 " size = %.20g",(double) icon_info.size);
415 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
416 " width = %.20g",(double) icon_file.directory[i].width);
417 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
418 " height = %.20g",(double) icon_file.directory[i].height);
419 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
420 " colors = %.20g",(double ) icon_info.number_colors);
421 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
422 " planes = %.20g",(double) icon_info.planes);
423 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
424 " bpp = %.20g",(double) icon_info.bits_per_pixel);
426 if ((icon_info.number_colors != 0) || (icon_info.bits_per_pixel <= 16U))
428 image->storage_class=PseudoClass;
429 image->colors=icon_info.number_colors;
430 if (image->colors == 0)
431 image->colors=one << icon_info.bits_per_pixel;
433 if (image->storage_class == PseudoClass)
442 Read Icon raster colormap.
444 if (AcquireImageColormap(image,image->colors,exception) ==
446 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
447 icon_colormap=(unsigned char *) AcquireQuantumMemory((size_t)
448 image->colors,4UL*sizeof(*icon_colormap));
449 if (icon_colormap == (unsigned char *) NULL)
450 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
451 count=ReadBlob(image,(size_t) (4*image->colors),icon_colormap);
452 if (count != (ssize_t) (4*image->colors))
453 ThrowReaderException(CorruptImageError,
454 "InsufficientImageDataInFile");
456 for (i=0; i < (ssize_t) image->colors; i++)
458 image->colormap[i].blue=(Quantum) ScaleCharToQuantum(*p++);
459 image->colormap[i].green=(Quantum) ScaleCharToQuantum(*p++);
460 image->colormap[i].red=(Quantum) ScaleCharToQuantum(*p++);
463 icon_colormap=(unsigned char *) RelinquishMagickMemory(icon_colormap);
466 Convert Icon raster image to pixel packets.
468 if ((image_info->ping != MagickFalse) &&
469 (image_info->number_scenes != 0))
470 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
472 status=SetImageExtent(image,image->columns,image->rows,exception);
473 if (status == MagickFalse)
474 return(DestroyImageList(image));
475 bytes_per_line=(((image->columns*icon_info.bits_per_pixel)+31) &
477 (void) bytes_per_line;
478 scanline_pad=((((image->columns*icon_info.bits_per_pixel)+31) & ~31)-
479 (image->columns*icon_info.bits_per_pixel)) >> 3;
480 switch (icon_info.bits_per_pixel)
485 Convert bitmap scanline.
487 for (y=(ssize_t) image->rows-1; y >= 0; y--)
489 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
490 if (q == (Quantum *) NULL)
492 for (x=0; x < (ssize_t) (image->columns-7); x+=8)
494 byte=(size_t) ReadBlobByte(image);
495 for (bit=0; bit < 8; bit++)
497 SetPixelIndex(image,((byte & (0x80 >> bit)) != 0 ? 0x01 :
499 q+=GetPixelChannels(image);
502 if ((image->columns % 8) != 0)
504 byte=(size_t) ReadBlobByte(image);
505 for (bit=0; bit < (image->columns % 8); bit++)
507 SetPixelIndex(image,((byte & (0x80 >> bit)) != 0 ? 0x01 :
509 q+=GetPixelChannels(image);
512 for (x=0; x < (ssize_t) scanline_pad; x++)
513 (void) ReadBlobByte(image);
514 if (SyncAuthenticPixels(image,exception) == MagickFalse)
516 if (image->previous == (Image *) NULL)
518 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
520 if (status == MagickFalse)
529 Read 4-bit Icon scanline.
531 for (y=(ssize_t) image->rows-1; y >= 0; y--)
533 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
534 if (q == (Quantum *) NULL)
536 for (x=0; x < ((ssize_t) image->columns-1); x+=2)
538 byte=(size_t) ReadBlobByte(image);
539 SetPixelIndex(image,((byte >> 4) & 0xf),q);
540 q+=GetPixelChannels(image);
541 SetPixelIndex(image,((byte) & 0xf),q);
542 q+=GetPixelChannels(image);
544 if ((image->columns % 2) != 0)
546 byte=(size_t) ReadBlobByte(image);
547 SetPixelIndex(image,((byte >> 4) & 0xf),q);
548 q+=GetPixelChannels(image);
550 for (x=0; x < (ssize_t) scanline_pad; x++)
551 (void) ReadBlobByte(image);
552 if (SyncAuthenticPixels(image,exception) == MagickFalse)
554 if (image->previous == (Image *) NULL)
556 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
558 if (status == MagickFalse)
567 Convert PseudoColor scanline.
569 for (y=(ssize_t) image->rows-1; y >= 0; y--)
571 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
572 if (q == (Quantum *) NULL)
574 for (x=0; x < (ssize_t) image->columns; x++)
576 byte=(size_t) ReadBlobByte(image);
577 SetPixelIndex(image,(Quantum) byte,q);
578 q+=GetPixelChannels(image);
580 for (x=0; x < (ssize_t) scanline_pad; x++)
581 (void) ReadBlobByte(image);
582 if (SyncAuthenticPixels(image,exception) == MagickFalse)
584 if (image->previous == (Image *) NULL)
586 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
588 if (status == MagickFalse)
597 Convert PseudoColor scanline.
599 for (y=(ssize_t) image->rows-1; y >= 0; y--)
601 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
602 if (q == (Quantum *) NULL)
604 for (x=0; x < (ssize_t) image->columns; x++)
606 byte=(size_t) ReadBlobByte(image);
607 byte|=(size_t) (ReadBlobByte(image) << 8);
608 SetPixelIndex(image,(Quantum) byte,q);
609 q+=GetPixelChannels(image);
611 for (x=0; x < (ssize_t) scanline_pad; x++)
612 (void) ReadBlobByte(image);
613 if (SyncAuthenticPixels(image,exception) == MagickFalse)
615 if (image->previous == (Image *) NULL)
617 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
619 if (status == MagickFalse)
629 Convert DirectColor scanline.
631 for (y=(ssize_t) image->rows-1; y >= 0; y--)
633 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
634 if (q == (Quantum *) NULL)
636 for (x=0; x < (ssize_t) image->columns; x++)
638 SetPixelBlue(image,ScaleCharToQuantum((unsigned char)
639 ReadBlobByte(image)),q);
640 SetPixelGreen(image,ScaleCharToQuantum((unsigned char)
641 ReadBlobByte(image)),q);
642 SetPixelRed(image,ScaleCharToQuantum((unsigned char)
643 ReadBlobByte(image)),q);
644 if (icon_info.bits_per_pixel == 32)
645 SetPixelAlpha(image,ScaleCharToQuantum((unsigned char)
646 ReadBlobByte(image)),q);
647 q+=GetPixelChannels(image);
649 if (icon_info.bits_per_pixel == 24)
650 for (x=0; x < (ssize_t) scanline_pad; x++)
651 (void) ReadBlobByte(image);
652 if (SyncAuthenticPixels(image,exception) == MagickFalse)
654 if (image->previous == (Image *) NULL)
656 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
658 if (status == MagickFalse)
665 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
667 if ((image_info->ping == MagickFalse) &&
668 (icon_info.bits_per_pixel <= 16))
669 (void) SyncImage(image,exception);
670 if (icon_info.bits_per_pixel != 32)
673 Read the ICON alpha mask.
675 image->storage_class=DirectClass;
676 for (y=(ssize_t) image->rows-1; y >= 0; y--)
678 q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
679 if (q == (Quantum *) NULL)
681 for (x=0; x < ((ssize_t) image->columns-7); x+=8)
683 byte=(size_t) ReadBlobByte(image);
684 for (bit=0; bit < 8; bit++)
686 SetPixelAlpha(image,(((byte & (0x80 >> bit)) != 0) ?
687 TransparentAlpha : OpaqueAlpha),q);
688 q+=GetPixelChannels(image);
691 if ((image->columns % 8) != 0)
693 byte=(size_t) ReadBlobByte(image);
694 for (bit=0; bit < (image->columns % 8); bit++)
696 SetPixelAlpha(image,(((byte & (0x80 >> bit)) != 0) ?
697 TransparentAlpha : OpaqueAlpha),q);
698 q+=GetPixelChannels(image);
701 if ((image->columns % 32) != 0)
702 for (x=0; x < (ssize_t) ((32-(image->columns % 32))/8); x++)
703 (void) ReadBlobByte(image);
704 if (SyncAuthenticPixels(image,exception) == MagickFalse)
708 if (EOFBlob(image) != MagickFalse)
710 ThrowFileException(exception,CorruptImageError,
711 "UnexpectedEndOfFile",image->filename);
716 Proceed to next image.
718 if (image_info->number_scenes != 0)
719 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
721 if (i < (ssize_t) (icon_file.count-1))
724 Allocate next image structure.
726 AcquireNextImage(image_info,image,exception);
727 if (GetNextImageInList(image) == (Image *) NULL)
729 image=DestroyImageList(image);
730 return((Image *) NULL);
732 image=SyncNextImageInList(image);
733 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
735 if (status == MagickFalse)
739 (void) CloseBlob(image);
740 return(GetFirstImageInList(image));
744 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
748 % R e g i s t e r I C O N I m a g e %
752 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
754 % RegisterICONImage() adds attributes for the Icon image format to
755 % the list of supported formats. The attributes include the image format
756 % tag, a method to read and/or write the format, whether the format
757 % supports the saving of more than one frame to the same file or blob,
758 % whether the format supports native in-memory I/O, and a brief
759 % description of the format.
761 % The format of the RegisterICONImage method is:
763 % size_t RegisterICONImage(void)
766 ModuleExport size_t RegisterICONImage(void)
771 entry=AcquireMagickInfo("ICON","CUR","Microsoft icon");
772 entry->decoder=(DecodeImageHandler *) ReadICONImage;
773 entry->encoder=(EncodeImageHandler *) WriteICONImage;
774 entry->flags^=CoderAdjoinFlag;
775 entry->flags|=CoderSeekableStreamFlag;
776 (void) RegisterMagickInfo(entry);
777 entry=AcquireMagickInfo("ICON","ICO","Microsoft icon");
778 entry->decoder=(DecodeImageHandler *) ReadICONImage;
779 entry->encoder=(EncodeImageHandler *) WriteICONImage;
780 entry->flags|=CoderSeekableStreamFlag;
781 (void) RegisterMagickInfo(entry);
782 entry=AcquireMagickInfo("ICON","ICON","Microsoft icon");
783 entry->decoder=(DecodeImageHandler *) ReadICONImage;
784 entry->encoder=(EncodeImageHandler *) WriteICONImage;
785 entry->flags^=CoderAdjoinFlag;
786 entry->flags|=CoderSeekableStreamFlag;
787 (void) RegisterMagickInfo(entry);
788 return(MagickImageCoderSignature);
792 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
796 % U n r e g i s t e r I C O N I m a g e %
800 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
802 % UnregisterICONImage() removes format registrations made by the
803 % ICON module from the list of supported formats.
805 % The format of the UnregisterICONImage method is:
807 % UnregisterICONImage(void)
810 ModuleExport void UnregisterICONImage(void)
812 (void) UnregisterMagickInfo("CUR");
813 (void) UnregisterMagickInfo("ICO");
814 (void) UnregisterMagickInfo("ICON");
818 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
822 % W r i t e I C O N I m a g e %
826 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
828 % WriteICONImage() writes an image in Microsoft Windows bitmap encoded
829 % image format, version 3 for Windows or (if the image has a matte channel)
832 % It encodes any subimage as a compressed PNG image ("BI_PNG)", only when its
833 % dimensions are 256x256 and image->compression is undefined or is defined as
836 % The format of the WriteICONImage method is:
838 % MagickBooleanType WriteICONImage(const ImageInfo *image_info,
839 % Image *image,ExceptionInfo *exception)
841 % A description of each parameter follows.
843 % o image_info: the image info.
845 % o image: The image.
847 % o exception: return any errors or warnings in this structure.
850 static MagickBooleanType WriteICONImage(const ImageInfo *image_info,
851 Image *image,ExceptionInfo *exception)
873 register const Quantum
880 register unsigned char
896 Open output image file.
898 assert(image_info != (const ImageInfo *) NULL);
899 assert(image_info->signature == MagickCoreSignature);
900 assert(image != (Image *) NULL);
901 assert(image->signature == MagickCoreSignature);
902 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image->filename);
903 assert(exception != (ExceptionInfo *) NULL);
904 assert(exception->signature == MagickCoreSignature);
905 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
906 if (status == MagickFalse)
908 images=(Image *) NULL;
909 option=GetImageOption(image_info,"icon:auto-resize");
910 if (option != (const char *) NULL)
912 images=AutoResizeImage(image,option,&scene,exception);
913 if (images == (Image *) NULL)
914 ThrowWriterException(ImageError,"InvalidDimensions");
922 if ((image->columns > 256L) || (image->rows > 256L))
923 ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
925 next=SyncNextImageInList(next);
926 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
929 Dump out a ICON header template to be properly initialized later.
931 (void) WriteBlobLSBShort(image,0);
932 (void) WriteBlobLSBShort(image,1);
933 (void) WriteBlobLSBShort(image,(unsigned char) scene);
934 (void) ResetMagickMemory(&icon_file,0,sizeof(icon_file));
935 (void) ResetMagickMemory(&icon_info,0,sizeof(icon_info));
937 next=(images != (Image *) NULL) ? images : image;
940 (void) WriteBlobByte(image,icon_file.directory[scene].width);
941 (void) WriteBlobByte(image,icon_file.directory[scene].height);
942 (void) WriteBlobByte(image,icon_file.directory[scene].colors);
943 (void) WriteBlobByte(image,icon_file.directory[scene].reserved);
944 (void) WriteBlobLSBShort(image,icon_file.directory[scene].planes);
945 (void) WriteBlobLSBShort(image,icon_file.directory[scene].bits_per_pixel);
946 (void) WriteBlobLSBLong(image,(unsigned int)
947 icon_file.directory[scene].size);
948 (void) WriteBlobLSBLong(image,(unsigned int)
949 icon_file.directory[scene].offset);
951 next=SyncNextImageInList(next);
952 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
954 next=(images != (Image *) NULL) ? images : image;
957 if ((next->columns > 255L) && (next->rows > 255L) &&
958 ((next->compression == UndefinedCompression) ||
959 (next->compression == ZipCompression)))
973 write_image=CloneImage(next,0,0,MagickTrue,exception);
974 if (write_image == (Image *) NULL)
976 images=DestroyImageList(images);
979 write_info=CloneImageInfo(image_info);
980 (void) CopyMagickString(write_info->filename,"PNG:",MagickPathExtent);
982 /* Don't write any ancillary chunks except for gAMA */
983 (void) SetImageArtifact(write_image,"png:include-chunk","none,gama");
985 /* Only write PNG32 formatted PNG (32-bit RGBA), 8 bits per channel */
986 (void) SetImageArtifact(write_image,"png:format","png32");
988 png=(unsigned char *) ImageToBlob(write_info,write_image,&length,
990 write_image=DestroyImageList(write_image);
991 write_info=DestroyImageInfo(write_info);
992 if (png == (unsigned char *) NULL)
994 images=DestroyImageList(images);
997 icon_file.directory[scene].width=0;
998 icon_file.directory[scene].height=0;
999 icon_file.directory[scene].colors=0;
1000 icon_file.directory[scene].reserved=0;
1001 icon_file.directory[scene].planes=1;
1002 icon_file.directory[scene].bits_per_pixel=32;
1003 icon_file.directory[scene].size=(size_t) length;
1004 icon_file.directory[scene].offset=(size_t) TellBlob(image);
1005 (void) WriteBlob(image,(size_t) length,png);
1006 png=(unsigned char *) RelinquishMagickMemory(png);
1011 Initialize ICON raster file header.
1013 (void) TransformImageColorspace(next,sRGBColorspace,exception);
1014 icon_info.file_size=14+12+28;
1015 icon_info.offset_bits=icon_info.file_size;
1016 icon_info.compression=BI_RGB;
1017 if ((next->storage_class != DirectClass) && (next->colors > 256))
1018 (void) SetImageStorageClass(next,DirectClass,exception);
1019 if (next->storage_class == DirectClass)
1022 Full color ICON raster.
1024 icon_info.number_colors=0;
1025 icon_info.bits_per_pixel=32;
1026 icon_info.compression=(size_t) BI_RGB;
1034 Colormapped ICON raster.
1036 icon_info.bits_per_pixel=8;
1037 if (next->colors <= 256)
1038 icon_info.bits_per_pixel=8;
1039 if (next->colors <= 16)
1040 icon_info.bits_per_pixel=4;
1041 if (next->colors <= 2)
1042 icon_info.bits_per_pixel=1;
1044 icon_info.number_colors=one << icon_info.bits_per_pixel;
1045 if (icon_info.number_colors < next->colors)
1047 (void) SetImageStorageClass(next,DirectClass,exception);
1048 icon_info.number_colors=0;
1049 icon_info.bits_per_pixel=(unsigned short) 24;
1050 icon_info.compression=(size_t) BI_RGB;
1058 icon_info.file_size+=3*(one << icon_info.bits_per_pixel);
1059 icon_info.offset_bits+=3*(one << icon_info.bits_per_pixel);
1060 icon_info.file_size+=(one << icon_info.bits_per_pixel);
1061 icon_info.offset_bits+=(one << icon_info.bits_per_pixel);
1064 bytes_per_line=(((next->columns*icon_info.bits_per_pixel)+31) &
1066 icon_info.ba_offset=0;
1067 icon_info.width=(ssize_t) next->columns;
1068 icon_info.height=(ssize_t) next->rows;
1070 icon_info.image_size=bytes_per_line*next->rows;
1072 icon_info.size+=(4*icon_info.number_colors);
1073 icon_info.size+=icon_info.image_size;
1074 icon_info.size+=(((icon_info.width+31) & ~31) >> 3)*icon_info.height;
1075 icon_info.file_size+=icon_info.image_size;
1076 icon_info.x_pixels=0;
1077 icon_info.y_pixels=0;
1078 switch (next->units)
1080 case UndefinedResolution:
1081 case PixelsPerInchResolution:
1083 icon_info.x_pixels=(size_t) (100.0*next->resolution.x/2.54);
1084 icon_info.y_pixels=(size_t) (100.0*next->resolution.y/2.54);
1087 case PixelsPerCentimeterResolution:
1089 icon_info.x_pixels=(size_t) (100.0*next->resolution.x);
1090 icon_info.y_pixels=(size_t) (100.0*next->resolution.y);
1094 icon_info.colors_important=icon_info.number_colors;
1096 Convert MIFF to ICON raster pixels.
1098 pixels=(unsigned char *) AcquireQuantumMemory((size_t)
1099 icon_info.image_size,sizeof(*pixels));
1100 if (pixels == (unsigned char *) NULL)
1102 images=DestroyImageList(images);
1103 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
1105 (void) ResetMagickMemory(pixels,0,(size_t) icon_info.image_size);
1106 switch (icon_info.bits_per_pixel)
1115 Convert PseudoClass image to a ICON monochrome image.
1117 for (y=0; y < (ssize_t) next->rows; y++)
1119 p=GetVirtualPixels(next,0,y,next->columns,1,exception);
1120 if (p == (const Quantum *) NULL)
1122 q=pixels+(next->rows-y-1)*bytes_per_line;
1125 for (x=0; x < (ssize_t) next->columns; x++)
1128 byte|=GetPixelIndex(next,p) != 0 ? 0x01 : 0x00;
1132 *q++=(unsigned char) byte;
1136 p+=GetPixelChannels(image);
1139 *q++=(unsigned char) (byte << (8-bit));
1140 if (next->previous == (Image *) NULL)
1142 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1143 if (status == MagickFalse)
1156 Convert PseudoClass image to a ICON monochrome image.
1158 for (y=0; y < (ssize_t) next->rows; y++)
1160 p=GetVirtualPixels(next,0,y,next->columns,1,exception);
1161 if (p == (const Quantum *) NULL)
1163 q=pixels+(next->rows-y-1)*bytes_per_line;
1166 for (x=0; x < (ssize_t) next->columns; x++)
1169 byte|=((size_t) GetPixelIndex(next,p) & 0x0f);
1173 *q++=(unsigned char) byte;
1177 p+=GetPixelChannels(image);
1180 *q++=(unsigned char) (byte << 4);
1181 if (next->previous == (Image *) NULL)
1183 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1184 if (status == MagickFalse)
1193 Convert PseudoClass packet to ICON pixel.
1195 for (y=0; y < (ssize_t) next->rows; y++)
1197 p=GetVirtualPixels(next,0,y,next->columns,1,exception);
1198 if (p == (const Quantum *) NULL)
1200 q=pixels+(next->rows-y-1)*bytes_per_line;
1201 for (x=0; x < (ssize_t) next->columns; x++)
1203 *q++=(unsigned char) GetPixelIndex(next,p);
1204 p+=GetPixelChannels(image);
1206 if (next->previous == (Image *) NULL)
1208 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1209 if (status == MagickFalse)
1219 Convert DirectClass packet to ICON BGR888 or BGRA8888 pixel.
1221 for (y=0; y < (ssize_t) next->rows; y++)
1223 p=GetVirtualPixels(next,0,y,next->columns,1,exception);
1224 if (p == (const Quantum *) NULL)
1226 q=pixels+(next->rows-y-1)*bytes_per_line;
1227 for (x=0; x < (ssize_t) next->columns; x++)
1229 *q++=ScaleQuantumToChar(GetPixelBlue(next,p));
1230 *q++=ScaleQuantumToChar(GetPixelGreen(next,p));
1231 *q++=ScaleQuantumToChar(GetPixelRed(next,p));
1232 if (next->alpha_trait == UndefinedPixelTrait)
1233 *q++=ScaleQuantumToChar(QuantumRange);
1235 *q++=ScaleQuantumToChar(GetPixelAlpha(next,p));
1236 p+=GetPixelChannels(next);
1238 if (icon_info.bits_per_pixel == 24)
1239 for (x=3L*(ssize_t) next->columns; x < (ssize_t) bytes_per_line; x++)
1241 if (next->previous == (Image *) NULL)
1243 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1244 if (status == MagickFalse)
1252 Write 40-byte version 3+ bitmap header.
1254 icon_file.directory[scene].width=(unsigned char) icon_info.width;
1255 icon_file.directory[scene].height=(unsigned char) icon_info.height;
1256 icon_file.directory[scene].colors=(unsigned char)
1257 icon_info.number_colors;
1258 icon_file.directory[scene].reserved=0;
1259 icon_file.directory[scene].planes=icon_info.planes;
1260 icon_file.directory[scene].bits_per_pixel=icon_info.bits_per_pixel;
1261 icon_file.directory[scene].size=icon_info.size;
1262 icon_file.directory[scene].offset=(size_t) TellBlob(image);
1263 (void) WriteBlobLSBLong(image,(unsigned int) 40);
1264 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.width);
1265 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.height*2);
1266 (void) WriteBlobLSBShort(image,icon_info.planes);
1267 (void) WriteBlobLSBShort(image,icon_info.bits_per_pixel);
1268 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.compression);
1269 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.image_size);
1270 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.x_pixels);
1271 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.y_pixels);
1272 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.number_colors);
1273 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.colors_important);
1274 if (next->storage_class == PseudoClass)
1280 Dump colormap to file.
1282 icon_colormap=(unsigned char *) AcquireQuantumMemory((size_t)
1283 (1UL << icon_info.bits_per_pixel),4UL*sizeof(*icon_colormap));
1284 if (icon_colormap == (unsigned char *) NULL)
1286 images=DestroyImageList(images);
1287 ThrowWriterException(ResourceLimitError,
1288 "MemoryAllocationFailed");
1291 for (i=0; i < (ssize_t) next->colors; i++)
1293 *q++=ScaleQuantumToChar(next->colormap[i].blue);
1294 *q++=ScaleQuantumToChar(next->colormap[i].green);
1295 *q++=ScaleQuantumToChar(next->colormap[i].red);
1296 *q++=(unsigned char) 0x0;
1298 for ( ; i < (ssize_t) (1UL << icon_info.bits_per_pixel); i++)
1300 *q++=(unsigned char) 0x00;
1301 *q++=(unsigned char) 0x00;
1302 *q++=(unsigned char) 0x00;
1303 *q++=(unsigned char) 0x00;
1305 (void) WriteBlob(image,(size_t) (4UL*(1UL <<
1306 icon_info.bits_per_pixel)),icon_colormap);
1307 icon_colormap=(unsigned char *) RelinquishMagickMemory(
1310 (void) WriteBlob(image,(size_t) icon_info.image_size,pixels);
1311 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
1315 scanline_pad=(((next->columns+31) & ~31)-next->columns) >> 3;
1316 for (y=((ssize_t) next->rows - 1); y >= 0; y--)
1318 p=GetVirtualPixels(next,0,y,next->columns,1,exception);
1319 if (p == (const Quantum *) NULL)
1323 for (x=0; x < (ssize_t) next->columns; x++)
1326 if ((next->alpha_trait != UndefinedPixelTrait) &&
1327 (GetPixelAlpha(next,p) == (Quantum) TransparentAlpha))
1332 (void) WriteBlobByte(image,(unsigned char) byte);
1336 p+=GetPixelChannels(next);
1339 (void) WriteBlobByte(image,(unsigned char) (byte << (8-bit)));
1340 for (i=0; i < (ssize_t) scanline_pad; i++)
1341 (void) WriteBlobByte(image,(unsigned char) 0);
1344 if (GetNextImageInList(next) == (Image *) NULL)
1346 status=SetImageProgress(next,SaveImagesTag,scene++,
1347 GetImageListLength(next));
1348 if (status == MagickFalse)
1350 next=SyncNextImageInList(next);
1351 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
1352 offset=SeekBlob(image,0,SEEK_SET);
1354 (void) WriteBlobLSBShort(image,0);
1355 (void) WriteBlobLSBShort(image,1);
1356 (void) WriteBlobLSBShort(image,(unsigned short) (scene+1));
1358 next=(images != (Image *) NULL) ? images : image;
1361 (void) WriteBlobByte(image,icon_file.directory[scene].width);
1362 (void) WriteBlobByte(image,icon_file.directory[scene].height);
1363 (void) WriteBlobByte(image,icon_file.directory[scene].colors);
1364 (void) WriteBlobByte(image,icon_file.directory[scene].reserved);
1365 (void) WriteBlobLSBShort(image,icon_file.directory[scene].planes);
1366 (void) WriteBlobLSBShort(image,icon_file.directory[scene].bits_per_pixel);
1367 (void) WriteBlobLSBLong(image,(unsigned int)
1368 icon_file.directory[scene].size);
1369 (void) WriteBlobLSBLong(image,(unsigned int)
1370 icon_file.directory[scene].offset);
1372 next=SyncNextImageInList(next);
1373 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
1374 (void) CloseBlob(image);
1375 images=DestroyImageList(images);