2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
10 % IIIII CCCC OOO N N %
13 % Read Microsoft Windows Icon Format %
20 % Copyright 1999-2011 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 "magick/studio.h"
43 #include "magick/blob.h"
44 #include "magick/blob-private.h"
45 #include "magick/cache.h"
46 #include "magick/colormap.h"
47 #include "magick/colorspace.h"
48 #include "magick/exception.h"
49 #include "magick/exception-private.h"
50 #include "magick/image.h"
51 #include "magick/image-private.h"
52 #include "magick/list.h"
53 #include "magick/log.h"
54 #include "magick/magick.h"
55 #include "magick/memory_.h"
56 #include "magick/monitor.h"
57 #include "magick/monitor-private.h"
58 #include "magick/nt-feature.h"
59 #include "magick/quantize.h"
60 #include "magick/quantum-private.h"
61 #include "magick/static.h"
62 #include "magick/string_.h"
63 #include "magick/module.h"
68 #if !defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__MINGW32__)
71 #define BI_BITFIELDS 3
78 typedef struct _IconEntry
95 typedef struct _IconFile
106 typedef struct _IconInfo
139 Forward declaractions.
141 static MagickBooleanType
142 WriteICONImage(const ImageInfo *,Image *);
145 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
149 % R e a d I C O N I m a g e %
153 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
155 % ReadICONImage() reads a Microsoft icon image file and returns it. It
156 % allocates the memory necessary for the new Image structure and returns a
157 % pointer to the new image.
159 % The format of the ReadICONImage method is:
161 % Image *ReadICONImage(const ImageInfo *image_info,
162 % ExceptionInfo *exception)
164 % A description of each parameter follows:
166 % o image_info: the image info.
168 % o exception: return any errors or warnings in this structure.
171 static Image *ReadICONImage(const ImageInfo *image_info,
172 ExceptionInfo *exception)
196 register unsigned char
214 assert(image_info != (const ImageInfo *) NULL);
215 assert(image_info->signature == MagickSignature);
216 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image_info->filename);
217 assert(exception != (ExceptionInfo *) NULL);
218 assert(exception->signature == MagickSignature);
219 image=AcquireImage(image_info);
220 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
221 if (status == MagickFalse)
223 image=DestroyImageList(image);
224 return((Image *) NULL);
226 icon_file.reserved=(short) ReadBlobLSBShort(image);
227 icon_file.resource_type=(short) ReadBlobLSBShort(image);
228 icon_file.count=(short) ReadBlobLSBShort(image);
229 if ((icon_file.reserved != 0) ||
230 ((icon_file.resource_type != 1) && (icon_file.resource_type != 2)) ||
231 (icon_file.count > MaxIcons))
232 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
233 for (i=0; i < icon_file.count; i++)
235 icon_file.directory[i].width=(unsigned char) ReadBlobByte(image);
236 icon_file.directory[i].height=(unsigned char) ReadBlobByte(image);
237 icon_file.directory[i].colors=(unsigned char) ReadBlobByte(image);
238 icon_file.directory[i].reserved=(unsigned char) ReadBlobByte(image);
239 icon_file.directory[i].planes=(unsigned short) ReadBlobLSBShort(image);
240 icon_file.directory[i].bits_per_pixel=(unsigned short)
241 ReadBlobLSBShort(image);
242 icon_file.directory[i].size=ReadBlobLSBLong(image);
243 icon_file.directory[i].offset=ReadBlobLSBLong(image);
246 for (i=0; i < icon_file.count; i++)
249 Verify Icon identifier.
251 offset=(ssize_t) SeekBlob(image,(MagickOffsetType)
252 icon_file.directory[i].offset,SEEK_SET);
254 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
255 icon_info.size=ReadBlobLSBLong(image);
256 icon_info.width=(unsigned char) ((int) ReadBlobLSBLong(image));
257 icon_info.height=(unsigned char) ((int) ReadBlobLSBLong(image)/2);
258 if ((icon_file.directory[i].width == 0) &&
259 (icon_file.directory[i].height == 0))
274 Icon image encoded as a compressed PNG image.
276 length=icon_file.directory[i].size;
277 png=(unsigned char *) AcquireQuantumMemory(length+12,sizeof(*png));
278 if (png == (unsigned char *) NULL)
279 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
280 (void) CopyMagickMemory(png,"\211PNG\r\n\032\n\000\000\000\015",12);
281 count=ReadBlob(image,length-12,png+12);
282 if (count != (ssize_t) (length-12))
284 png=(unsigned char *) RelinquishMagickMemory(png);
285 ThrowReaderException(CorruptImageError,
286 "InsufficientImageDataInFile");
288 read_info=CloneImageInfo(image_info);
289 (void) CopyMagickString(read_info->magick,"PNG",MaxTextExtent);
290 icon_image=BlobToImage(read_info,png,length+12,exception);
291 read_info=DestroyImageInfo(read_info);
292 png=(unsigned char *) RelinquishMagickMemory(png);
293 if (icon_image == (Image *) NULL)
295 image=DestroyImageList(image);
296 return((Image *) NULL);
298 DestroyBlob(icon_image);
299 icon_image->blob=ReferenceBlob(image->blob);
300 ReplaceImageInList(&image,icon_image);
304 icon_info.planes=ReadBlobLSBShort(image);
305 icon_info.bits_per_pixel=ReadBlobLSBShort(image);
306 if (icon_info.bits_per_pixel > 32)
307 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
308 icon_info.compression=ReadBlobLSBLong(image);
309 icon_info.image_size=ReadBlobLSBLong(image);
310 icon_info.x_pixels=ReadBlobLSBLong(image);
311 icon_info.y_pixels=ReadBlobLSBLong(image);
312 icon_info.number_colors=ReadBlobLSBLong(image);
313 icon_info.colors_important=ReadBlobLSBLong(image);
314 image->matte=MagickTrue;
315 image->columns=(size_t) icon_file.directory[i].width;
316 if ((ssize_t) image->columns > icon_info.width)
317 image->columns=(size_t) icon_info.width;
318 image->rows=(size_t) icon_file.directory[i].height;
319 if ((ssize_t) image->rows > icon_info.height)
320 image->rows=(size_t) icon_info.height;
321 image->depth=icon_info.bits_per_pixel;
322 if (image->debug != MagickFalse)
324 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
325 " scene = %.20g",(double) i);
326 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
327 " size = %.20g",(double) icon_info.size);
328 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
329 " width = %.20g",(double) icon_file.directory[i].width);
330 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
331 " height = %.20g",(double) icon_file.directory[i].height);
332 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
333 " colors = %.20g",(double ) icon_info.number_colors);
334 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
335 " planes = %.20g",(double) icon_info.planes);
336 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
337 " bpp = %.20g",(double) icon_info.bits_per_pixel);
339 if ((icon_info.number_colors != 0) || (icon_info.bits_per_pixel <= 16))
341 image->storage_class=PseudoClass;
342 image->colors=icon_info.number_colors;
343 if (image->colors == 0)
344 image->colors=one << icon_info.bits_per_pixel;
346 if (image->storage_class == PseudoClass)
359 Read Icon raster colormap.
362 number_colors=one << icon_info.bits_per_pixel;
363 if (AcquireImageColormap(image,number_colors) == MagickFalse)
364 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
365 icon_colormap=(unsigned char *) AcquireQuantumMemory((size_t)
366 image->colors,4UL*sizeof(*icon_colormap));
367 if (icon_colormap == (unsigned char *) NULL)
368 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
369 count=ReadBlob(image,(size_t) (4*image->colors),icon_colormap);
370 if (count != (ssize_t) (4*image->colors))
371 ThrowReaderException(CorruptImageError,
372 "InsufficientImageDataInFile");
374 for (i=0; i < (ssize_t) image->colors; i++)
376 image->colormap[i].blue=(Quantum) ScaleCharToQuantum(*p++);
377 image->colormap[i].green=(Quantum) ScaleCharToQuantum(*p++);
378 image->colormap[i].red=(Quantum) ScaleCharToQuantum(*p++);
381 icon_colormap=(unsigned char *) RelinquishMagickMemory(icon_colormap);
384 Convert Icon raster image to pixel packets.
386 if ((image_info->ping != MagickFalse) &&
387 (image_info->number_scenes != 0))
388 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
390 bytes_per_line=(((image->columns*icon_info.bits_per_pixel)+31) &
392 (void) bytes_per_line;
393 scanline_pad=((((image->columns*icon_info.bits_per_pixel)+31) & ~31)-
394 (image->columns*icon_info.bits_per_pixel)) >> 3;
395 switch (icon_info.bits_per_pixel)
400 Convert bitmap scanline.
402 for (y=(ssize_t) image->rows-1; y >= 0; y--)
404 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
405 if (q == (PixelPacket *) NULL)
407 indexes=GetAuthenticIndexQueue(image);
408 for (x=0; x < (ssize_t) (image->columns-7); x+=8)
410 byte=(size_t) ReadBlobByte(image);
411 for (bit=0; bit < 8; bit++)
412 SetIndexPixelComponent(indexes+x+bit,
413 ((byte & (0x80 >> bit)) != 0 ? 0x01 : 0x00));
415 if ((image->columns % 8) != 0)
417 byte=(size_t) ReadBlobByte(image);
418 for (bit=0; bit < (image->columns % 8); bit++)
419 SetIndexPixelComponent(indexes+x+bit,
420 ((byte & (0x80 >> bit)) != 0 ? 0x01 : 0x00));
422 for (x=0; x < (ssize_t) scanline_pad; x++)
423 (void) ReadBlobByte(image);
424 if (SyncAuthenticPixels(image,exception) == MagickFalse)
426 if (image->previous == (Image *) NULL)
428 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
430 if (status == MagickFalse)
439 Read 4-bit Icon scanline.
441 for (y=(ssize_t) image->rows-1; y >= 0; y--)
443 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
444 if (q == (PixelPacket *) NULL)
446 indexes=GetAuthenticIndexQueue(image);
447 for (x=0; x < ((ssize_t) image->columns-1); x+=2)
449 byte=(size_t) ReadBlobByte(image);
450 SetIndexPixelComponent(indexes+x,((byte >> 4) & 0xf));
451 SetIndexPixelComponent(indexes+x+1,((byte) & 0xf));
453 if ((image->columns % 2) != 0)
455 byte=(size_t) ReadBlobByte(image);
456 SetIndexPixelComponent(indexes+x,((byte >> 4) & 0xf));
458 for (x=0; x < (ssize_t) scanline_pad; x++)
459 (void) ReadBlobByte(image);
460 if (SyncAuthenticPixels(image,exception) == MagickFalse)
462 if (image->previous == (Image *) NULL)
464 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
466 if (status == MagickFalse)
475 Convert PseudoColor scanline.
477 for (y=(ssize_t) image->rows-1; y >= 0; y--)
479 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
480 if (q == (PixelPacket *) NULL)
482 indexes=GetAuthenticIndexQueue(image);
483 for (x=0; x < (ssize_t) image->columns; x++)
485 byte=(size_t) ReadBlobByte(image);
486 SetIndexPixelComponent(indexes+x,byte);
488 for (x=0; x < (ssize_t) scanline_pad; x++)
489 (void) ReadBlobByte(image);
490 if (SyncAuthenticPixels(image,exception) == MagickFalse)
492 if (image->previous == (Image *) NULL)
494 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
496 if (status == MagickFalse)
505 Convert PseudoColor scanline.
507 for (y=(ssize_t) image->rows-1; y >= 0; y--)
509 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
510 if (q == (PixelPacket *) NULL)
512 indexes=GetAuthenticIndexQueue(image);
513 for (x=0; x < (ssize_t) image->columns; x++)
515 byte=(size_t) ReadBlobByte(image);
516 byte|=(size_t) (ReadBlobByte(image) << 8);
517 SetIndexPixelComponent(indexes+x,byte);
519 for (x=0; x < (ssize_t) scanline_pad; x++)
520 (void) ReadBlobByte(image);
521 if (SyncAuthenticPixels(image,exception) == MagickFalse)
523 if (image->previous == (Image *) NULL)
525 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
527 if (status == MagickFalse)
537 Convert DirectColor scanline.
539 for (y=(ssize_t) image->rows-1; y >= 0; y--)
541 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
542 if (q == (PixelPacket *) NULL)
544 for (x=0; x < (ssize_t) image->columns; x++)
546 SetBluePixelComponent(q,ScaleCharToQuantum((unsigned char)
547 ReadBlobByte(image)));
548 SetGreenPixelComponent(q,ScaleCharToQuantum((unsigned char)
549 ReadBlobByte(image)));
550 SetRedPixelComponent(q,ScaleCharToQuantum((unsigned char)
551 ReadBlobByte(image)));
552 if (icon_info.bits_per_pixel == 32)
553 SetOpacityPixelComponent(q,(QuantumRange-ScaleCharToQuantum(
554 (unsigned char) ReadBlobByte(image))));
557 if (icon_info.bits_per_pixel == 24)
558 for (x=0; x < (ssize_t) scanline_pad; x++)
559 (void) ReadBlobByte(image);
560 if (SyncAuthenticPixels(image,exception) == MagickFalse)
562 if (image->previous == (Image *) NULL)
564 status=SetImageProgress(image,LoadImageTag,image->rows-y-1,
566 if (status == MagickFalse)
573 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
575 if (image_info->ping == MagickFalse)
576 (void) SyncImage(image);
577 if (icon_info.bits_per_pixel != 32)
580 Read the ICON alpha mask.
582 image->storage_class=DirectClass;
583 for (y=(ssize_t) image->rows-1; y >= 0; y--)
585 q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
586 if (q == (PixelPacket *) NULL)
588 for (x=0; x < ((ssize_t) image->columns-7); x+=8)
590 byte=(size_t) ReadBlobByte(image);
591 for (bit=0; bit < 8; bit++)
592 SetOpacityPixelComponent(q+x+bit,(((byte & (0x80 >> bit)) !=
593 0) ? TransparentOpacity : OpaqueOpacity));
595 if ((image->columns % 8) != 0)
597 byte=(size_t) ReadBlobByte(image);
598 for (bit=0; bit < (image->columns % 8); bit++)
599 SetOpacityPixelComponent(q+x+bit,(((byte & (0x80 >> bit)) !=
600 0) ? TransparentOpacity : OpaqueOpacity));
602 if ((image->columns % 32) != 0)
603 for (x=0; x < (ssize_t) ((32-(image->columns % 32))/8); x++)
604 (void) ReadBlobByte(image);
605 if (SyncAuthenticPixels(image,exception) == MagickFalse)
609 if (EOFBlob(image) != MagickFalse)
611 ThrowFileException(exception,CorruptImageError,
612 "UnexpectedEndOfFile",image->filename);
617 Proceed to next image.
619 if (image_info->number_scenes != 0)
620 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
622 if (i < (ssize_t) (icon_file.count-1))
625 Allocate next image structure.
627 AcquireNextImage(image_info,image);
628 if (GetNextImageInList(image) == (Image *) NULL)
630 image=DestroyImageList(image);
631 return((Image *) NULL);
633 image=SyncNextImageInList(image);
634 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
636 if (status == MagickFalse)
640 (void) CloseBlob(image);
641 return(GetFirstImageInList(image));
645 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
649 % R e g i s t e r I C O N I m a g e %
653 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
655 % RegisterICONImage() adds attributes for the Icon image format to
656 % the list of supported formats. The attributes include the image format
657 % tag, a method to read and/or write the format, whether the format
658 % supports the saving of more than one frame to the same file or blob,
659 % whether the format supports native in-memory I/O, and a brief
660 % description of the format.
662 % The format of the RegisterICONImage method is:
664 % size_t RegisterICONImage(void)
667 ModuleExport size_t RegisterICONImage(void)
672 entry=SetMagickInfo("CUR");
673 entry->decoder=(DecodeImageHandler *) ReadICONImage;
674 entry->encoder=(EncodeImageHandler *) WriteICONImage;
675 entry->adjoin=MagickFalse;
676 entry->seekable_stream=MagickTrue;
677 entry->description=ConstantString("Microsoft icon");
678 entry->module=ConstantString("CUR");
679 (void) RegisterMagickInfo(entry);
680 entry=SetMagickInfo("ICO");
681 entry->decoder=(DecodeImageHandler *) ReadICONImage;
682 entry->encoder=(EncodeImageHandler *) WriteICONImage;
683 entry->adjoin=MagickTrue;
684 entry->seekable_stream=MagickTrue;
685 entry->description=ConstantString("Microsoft icon");
686 entry->module=ConstantString("ICON");
687 (void) RegisterMagickInfo(entry);
688 entry=SetMagickInfo("ICON");
689 entry->decoder=(DecodeImageHandler *) ReadICONImage;
690 entry->encoder=(EncodeImageHandler *) WriteICONImage;
691 entry->adjoin=MagickFalse;
692 entry->seekable_stream=MagickTrue;
693 entry->description=ConstantString("Microsoft icon");
694 entry->module=ConstantString("ICON");
695 (void) RegisterMagickInfo(entry);
696 return(MagickImageCoderSignature);
700 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
704 % U n r e g i s t e r I C O N I m a g e %
708 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
710 % UnregisterICONImage() removes format registrations made by the
711 % ICON module from the list of supported formats.
713 % The format of the UnregisterICONImage method is:
715 % UnregisterICONImage(void)
718 ModuleExport void UnregisterICONImage(void)
720 (void) UnregisterMagickInfo("CUR");
721 (void) UnregisterMagickInfo("ICO");
722 (void) UnregisterMagickInfo("ICON");
726 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
730 % W r i t e I C O N I m a g e %
734 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
736 % WriteICONImage() writes an image in Microsoft Windows bitmap encoded
737 % image format, version 3 for Windows or (if the image has a matte channel)
740 % The format of the WriteICONImage method is:
742 % MagickBooleanType WriteICONImage(const ImageInfo *image_info,
745 % A description of each parameter follows.
747 % o image_info: the image info.
749 % o image: The image.
752 static MagickBooleanType WriteICONImage(const ImageInfo *image_info,
771 register const IndexPacket
774 register const PixelPacket
781 register unsigned char
797 Open output image file.
799 assert(image_info != (const ImageInfo *) NULL);
800 assert(image_info->signature == MagickSignature);
801 assert(image != (Image *) NULL);
802 assert(image->signature == MagickSignature);
803 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image->filename);
804 status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
805 if (status == MagickFalse)
811 if ((image->columns > 256L) || (image->rows > 256L))
812 ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
814 next=SyncNextImageInList(next);
815 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
817 Dump out a ICON header template to be properly initialized later.
819 (void) WriteBlobLSBShort(image,0);
820 (void) WriteBlobLSBShort(image,1);
821 (void) WriteBlobLSBShort(image,(unsigned char) scene);
822 (void) ResetMagickMemory(&icon_file,0,sizeof(icon_file));
823 (void) ResetMagickMemory(&icon_info,0,sizeof(icon_info));
828 (void) WriteBlobByte(image,icon_file.directory[scene].width);
829 (void) WriteBlobByte(image,icon_file.directory[scene].height);
830 (void) WriteBlobByte(image,icon_file.directory[scene].colors);
831 (void) WriteBlobByte(image,icon_file.directory[scene].reserved);
832 (void) WriteBlobLSBShort(image,icon_file.directory[scene].planes);
833 (void) WriteBlobLSBShort(image,icon_file.directory[scene].bits_per_pixel);
834 (void) WriteBlobLSBLong(image,(unsigned int)
835 icon_file.directory[scene].size);
836 (void) WriteBlobLSBLong(image,(unsigned int)
837 icon_file.directory[scene].offset);
839 next=SyncNextImageInList(next);
840 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
845 if ((next->columns == 256) && (next->rows == 256))
860 Icon image encoded as a compressed PNG image.
862 write_image=CloneImage(next,0,0,MagickTrue,&image->exception);
863 if (write_image == (Image *) NULL)
865 write_info=CloneImageInfo(image_info);
866 (void) CopyMagickString(write_info->filename,"PNG:",MaxTextExtent);
867 png=(unsigned char *) ImageToBlob(write_info,write_image,&length,
869 write_image=DestroyImage(write_image);
870 write_info=DestroyImageInfo(write_info);
871 if (png == (unsigned char *) NULL)
873 icon_file.directory[scene].width=0;
874 icon_file.directory[scene].height=0;
875 icon_file.directory[scene].colors=0;
876 icon_file.directory[scene].reserved=0;
877 icon_file.directory[scene].planes=1;
878 icon_file.directory[scene].bits_per_pixel=32;
879 icon_file.directory[scene].size=(size_t) length;
880 icon_file.directory[scene].offset=(size_t) TellBlob(image);
881 (void) WriteBlob(image,(size_t) length,png);
882 png=(unsigned char *) RelinquishMagickMemory(png);
887 Initialize ICON raster file header.
889 if (next->colorspace != RGBColorspace)
890 (void) TransformImageColorspace(next,RGBColorspace);
891 icon_info.file_size=14+12+28;
892 icon_info.offset_bits=icon_info.file_size;
893 icon_info.compression=BI_RGB;
894 if ((next->storage_class != DirectClass) && (next->colors > 256))
895 (void) SetImageStorageClass(next,DirectClass);
896 if (next->storage_class == DirectClass)
899 Full color ICON raster.
901 icon_info.number_colors=0;
902 icon_info.bits_per_pixel=32;
903 icon_info.compression=(size_t) BI_RGB;
911 Colormapped ICON raster.
913 icon_info.bits_per_pixel=8;
914 if (next->colors <= 256)
915 icon_info.bits_per_pixel=8;
916 if (next->colors <= 16)
917 icon_info.bits_per_pixel=4;
918 if (next->colors <= 2)
919 icon_info.bits_per_pixel=1;
921 icon_info.number_colors=one << icon_info.bits_per_pixel;
922 if (icon_info.number_colors < next->colors)
924 (void) SetImageStorageClass(next,DirectClass);
925 icon_info.number_colors=0;
926 icon_info.bits_per_pixel=(unsigned short) 24;
927 icon_info.compression=(size_t) BI_RGB;
935 icon_info.file_size+=3*(one << icon_info.bits_per_pixel);
936 icon_info.offset_bits+=3*(one << icon_info.bits_per_pixel);
937 icon_info.file_size+=(one << icon_info.bits_per_pixel);
938 icon_info.offset_bits+=(one << icon_info.bits_per_pixel);
941 bytes_per_line=(((next->columns*icon_info.bits_per_pixel)+31) &
943 icon_info.ba_offset=0;
944 icon_info.width=(ssize_t) next->columns;
945 icon_info.height=(ssize_t) next->rows;
947 icon_info.image_size=bytes_per_line*next->rows;
949 icon_info.size+=(4*icon_info.number_colors);
950 icon_info.size+=icon_info.image_size;
951 icon_info.size+=(((icon_info.width+31) & ~31) >> 3)*icon_info.height;
952 icon_info.file_size+=icon_info.image_size;
953 icon_info.x_pixels=0;
954 icon_info.y_pixels=0;
957 case UndefinedResolution:
958 case PixelsPerInchResolution:
960 icon_info.x_pixels=(size_t) (100.0*next->x_resolution/2.54);
961 icon_info.y_pixels=(size_t) (100.0*next->y_resolution/2.54);
964 case PixelsPerCentimeterResolution:
966 icon_info.x_pixels=(size_t) (100.0*next->x_resolution);
967 icon_info.y_pixels=(size_t) (100.0*next->y_resolution);
971 icon_info.colors_important=icon_info.number_colors;
973 Convert MIFF to ICON raster pixels.
975 pixels=(unsigned char *) AcquireQuantumMemory((size_t)
976 icon_info.image_size,sizeof(*pixels));
977 if (pixels == (unsigned char *) NULL)
978 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
979 (void) ResetMagickMemory(pixels,0,(size_t) icon_info.image_size);
980 switch (icon_info.bits_per_pixel)
989 Convert PseudoClass image to a ICON monochrome image.
991 for (y=0; y < (ssize_t) next->rows; y++)
993 p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception);
994 if (p == (const PixelPacket *) NULL)
996 indexes=GetVirtualIndexQueue(next);
997 q=pixels+(next->rows-y-1)*bytes_per_line;
1000 for (x=0; x < (ssize_t) next->columns; x++)
1003 byte|=GetIndexPixelComponent(indexes+x) != 0 ? 0x01 : 0x00;
1007 *q++=(unsigned char) byte;
1013 *q++=(unsigned char) (byte << (8-bit));
1014 if (next->previous == (Image *) NULL)
1016 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1017 if (status == MagickFalse)
1030 Convert PseudoClass image to a ICON monochrome image.
1032 for (y=0; y < (ssize_t) next->rows; y++)
1034 p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception);
1035 if (p == (const PixelPacket *) NULL)
1037 indexes=GetVirtualIndexQueue(next);
1038 q=pixels+(next->rows-y-1)*bytes_per_line;
1041 for (x=0; x < (ssize_t) next->columns; x++)
1044 byte|=((size_t) GetIndexPixelComponent(indexes+x) & 0x0f);
1048 *q++=(unsigned char) byte;
1054 *q++=(unsigned char) (byte << 4);
1055 if (next->previous == (Image *) NULL)
1057 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1058 if (status == MagickFalse)
1067 Convert PseudoClass packet to ICON pixel.
1069 for (y=0; y < (ssize_t) next->rows; y++)
1071 p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception);
1072 if (p == (const PixelPacket *) NULL)
1074 indexes=GetVirtualIndexQueue(next);
1075 q=pixels+(next->rows-y-1)*bytes_per_line;
1076 for (x=0; x < (ssize_t) next->columns; x++)
1077 *q++=(unsigned char) GetIndexPixelComponent(indexes+x);
1078 if (next->previous == (Image *) NULL)
1080 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1081 if (status == MagickFalse)
1091 Convert DirectClass packet to ICON BGR888 or BGRA8888 pixel.
1093 for (y=0; y < (ssize_t) next->rows; y++)
1095 p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception);
1096 if (p == (const PixelPacket *) NULL)
1098 q=pixels+(next->rows-y-1)*bytes_per_line;
1099 for (x=0; x < (ssize_t) next->columns; x++)
1101 *q++=ScaleQuantumToChar(GetBluePixelComponent(p));
1102 *q++=ScaleQuantumToChar(GetGreenPixelComponent(p));
1103 *q++=ScaleQuantumToChar(GetRedPixelComponent(p));
1104 if (next->matte == MagickFalse)
1105 *q++=ScaleQuantumToChar(QuantumRange);
1107 *q++=ScaleQuantumToChar(GetAlphaPixelComponent(p));
1110 if (icon_info.bits_per_pixel == 24)
1111 for (x=3L*(ssize_t) next->columns; x < (ssize_t) bytes_per_line; x++)
1113 if (next->previous == (Image *) NULL)
1115 status=SetImageProgress(next,SaveImageTag,y,next->rows);
1116 if (status == MagickFalse)
1124 Write 40-byte version 3+ bitmap header.
1126 icon_file.directory[scene].width=(unsigned char) icon_info.width;
1127 icon_file.directory[scene].height=(unsigned char) icon_info.height;
1128 icon_file.directory[scene].colors=(unsigned char)
1129 icon_info.number_colors;
1130 icon_file.directory[scene].reserved=0;
1131 icon_file.directory[scene].planes=icon_info.planes;
1132 icon_file.directory[scene].bits_per_pixel=icon_info.bits_per_pixel;
1133 icon_file.directory[scene].size=icon_info.size;
1134 icon_file.directory[scene].offset=(size_t) TellBlob(image);
1135 (void) WriteBlobLSBLong(image,(unsigned int) 40);
1136 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.width);
1137 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.height*2);
1138 (void) WriteBlobLSBShort(image,icon_info.planes);
1139 (void) WriteBlobLSBShort(image,icon_info.bits_per_pixel);
1140 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.compression);
1141 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.image_size);
1142 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.x_pixels);
1143 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.y_pixels);
1144 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.number_colors);
1145 (void) WriteBlobLSBLong(image,(unsigned int) icon_info.colors_important);
1146 if (next->storage_class == PseudoClass)
1152 Dump colormap to file.
1154 icon_colormap=(unsigned char *) AcquireQuantumMemory((size_t)
1155 (1UL << icon_info.bits_per_pixel),4UL*sizeof(*icon_colormap));
1156 if (icon_colormap == (unsigned char *) NULL)
1157 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
1159 for (i=0; i < (ssize_t) next->colors; i++)
1161 *q++=ScaleQuantumToChar(next->colormap[i].blue);
1162 *q++=ScaleQuantumToChar(next->colormap[i].green);
1163 *q++=ScaleQuantumToChar(next->colormap[i].red);
1164 *q++=(unsigned char) 0x0;
1166 for ( ; i < (ssize_t) (1UL << icon_info.bits_per_pixel); i++)
1168 *q++=(unsigned char) 0x00;
1169 *q++=(unsigned char) 0x00;
1170 *q++=(unsigned char) 0x00;
1171 *q++=(unsigned char) 0x00;
1173 (void) WriteBlob(image,(size_t) (4UL*(1UL <<
1174 icon_info.bits_per_pixel)),icon_colormap);
1175 icon_colormap=(unsigned char *) RelinquishMagickMemory(
1178 (void) WriteBlob(image,(size_t) icon_info.image_size,pixels);
1179 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
1183 scanline_pad=(((next->columns+31) & ~31)-next->columns) >> 3;
1184 for (y=((ssize_t) next->rows - 1); y >= 0; y--)
1186 p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception);
1187 if (p == (const PixelPacket *) NULL)
1191 for (x=0; x < (ssize_t) next->columns; x++)
1194 if ((next->matte == MagickTrue) &&
1195 (GetOpacityPixelComponent(p) == (Quantum) TransparentOpacity))
1200 (void) WriteBlobByte(image,(unsigned char) byte);
1207 (void) WriteBlobByte(image,(unsigned char) (byte << (8-bit)));
1208 for (i=0; i < (ssize_t) scanline_pad; i++)
1209 (void) WriteBlobByte(image,(unsigned char) 0);
1212 if (GetNextImageInList(next) == (Image *) NULL)
1214 next=SyncNextImageInList(next);
1215 status=SetImageProgress(next,SaveImagesTag,scene++,
1216 GetImageListLength(next));
1217 if (status == MagickFalse)
1219 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
1220 offset=SeekBlob(image,0,SEEK_SET);
1222 (void) WriteBlobLSBShort(image,0);
1223 (void) WriteBlobLSBShort(image,1);
1224 (void) WriteBlobLSBShort(image,(unsigned short) (scene+1));
1229 (void) WriteBlobByte(image,icon_file.directory[scene].width);
1230 (void) WriteBlobByte(image,icon_file.directory[scene].height);
1231 (void) WriteBlobByte(image,icon_file.directory[scene].colors);
1232 (void) WriteBlobByte(image,icon_file.directory[scene].reserved);
1233 (void) WriteBlobLSBShort(image,icon_file.directory[scene].planes);
1234 (void) WriteBlobLSBShort(image,icon_file.directory[scene].bits_per_pixel);
1235 (void) WriteBlobLSBLong(image,(unsigned int)
1236 icon_file.directory[scene].size);
1237 (void) WriteBlobLSBLong(image,(unsigned int)
1238 icon_file.directory[scene].offset);
1240 next=SyncNextImageInList(next);
1241 } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse));
1242 (void) CloseBlob(image);