/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % IIIII CCCC OOO N N % % I C O O NN N % % I C O O N N N % % I C O O N NN % % IIIII CCCC OOO N N % % % % % % Read Microsoft Windows Icon Format % % % % Software Design % % John Cristy % % July 1992 % % % % % % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization % % dedicated to making software imaging solutions freely available. % % % % You may not use this file except in compliance with the License. You may % % obtain a copy of the License at % % % % http://www.imagemagick.org/script/license.php % % % % Unless required by applicable law or agreed to in writing, software % % distributed under the License is distributed on an "AS IS" BASIS, % % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % % See the License for the specific language governing permissions and % % limitations under the License. % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % */ /* Include declarations. */ #include "magick/studio.h" #include "magick/blob.h" #include "magick/blob-private.h" #include "magick/cache.h" #include "magick/colormap.h" #include "magick/colorspace.h" #include "magick/exception.h" #include "magick/exception-private.h" #include "magick/image.h" #include "magick/image-private.h" #include "magick/list.h" #include "magick/log.h" #include "magick/magick.h" #include "magick/memory_.h" #include "magick/monitor.h" #include "magick/monitor-private.h" #include "magick/nt-feature.h" #include "magick/quantize.h" #include "magick/quantum-private.h" #include "magick/static.h" #include "magick/string_.h" #include "magick/module.h" /* Define declarations. */ #if !defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__MINGW32__) #define BI_RGB 0 #define BI_RLE8 1 #define BI_BITFIELDS 3 #endif #define MaxIcons 1024 /* Typedef declarations. */ typedef struct _IconEntry { unsigned char width, height, colors, reserved; unsigned short int planes, bits_per_pixel; size_t size, offset; } IconEntry; typedef struct _IconFile { short reserved, resource_type, count; IconEntry directory[MaxIcons]; } IconFile; typedef struct _IconInfo { size_t file_size, ba_offset, offset_bits, size; ssize_t width, height; unsigned short planes, bits_per_pixel; size_t compression, image_size, x_pixels, y_pixels, number_colors, red_mask, green_mask, blue_mask, alpha_mask, colors_important; ssize_t colorspace; } IconInfo; /* Forward declaractions. */ static MagickBooleanType WriteICONImage(const ImageInfo *,Image *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d I C O N I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadICONImage() reads a Microsoft icon image file and returns it. It % allocates the memory necessary for the new Image structure and returns a % pointer to the new image. % % The format of the ReadICONImage method is: % % Image *ReadICONImage(const ImageInfo *image_info, % ExceptionInfo *exception) % % A description of each parameter follows: % % o image_info: the image info. % % o exception: return any errors or warnings in this structure. % */ static Image *ReadICONImage(const ImageInfo *image_info, ExceptionInfo *exception) { IconFile icon_file; IconInfo icon_info; Image *image; MagickBooleanType status; register IndexPacket *indexes; register ssize_t i, x; register PixelPacket *q; register unsigned char *p; size_t bit, byte, bytes_per_line, one, scanline_pad; ssize_t count, offset, y; /* Open image file. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image_info->filename); assert(exception != (ExceptionInfo *) NULL); assert(exception->signature == MagickSignature); image=AcquireImage(image_info); status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); if (status == MagickFalse) { image=DestroyImageList(image); return((Image *) NULL); } icon_file.reserved=(short) ReadBlobLSBShort(image); icon_file.resource_type=(short) ReadBlobLSBShort(image); icon_file.count=(short) ReadBlobLSBShort(image); if ((icon_file.reserved != 0) || ((icon_file.resource_type != 1) && (icon_file.resource_type != 2)) || (icon_file.count > MaxIcons)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); for (i=0; i < icon_file.count; i++) { icon_file.directory[i].width=(unsigned char) ReadBlobByte(image); icon_file.directory[i].height=(unsigned char) ReadBlobByte(image); icon_file.directory[i].colors=(unsigned char) ReadBlobByte(image); icon_file.directory[i].reserved=(unsigned char) ReadBlobByte(image); icon_file.directory[i].planes=(unsigned short) ReadBlobLSBShort(image); icon_file.directory[i].bits_per_pixel=(unsigned short) ReadBlobLSBShort(image); icon_file.directory[i].size=ReadBlobLSBLong(image); icon_file.directory[i].offset=ReadBlobLSBLong(image); } one=1; for (i=0; i < icon_file.count; i++) { /* Verify Icon identifier. */ offset=(ssize_t) SeekBlob(image,(MagickOffsetType) icon_file.directory[i].offset,SEEK_SET); if (offset < 0) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); icon_info.size=ReadBlobLSBLong(image); icon_info.width=(unsigned char) ((int) ReadBlobLSBLong(image)); icon_info.height=(unsigned char) ((int) ReadBlobLSBLong(image)/2); if ((icon_file.directory[i].width == 0) && (icon_file.directory[i].height == 0)) { Image *icon_image; ImageInfo *read_info; size_t length; unsigned char *png; /* Icon image encoded as a compressed PNG image. */ length=icon_file.directory[i].size; png=(unsigned char *) AcquireQuantumMemory(length+12,sizeof(*png)); if (png == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); (void) CopyMagickMemory(png,"\211PNG\r\n\032\n\000\000\000\015",12); count=ReadBlob(image,length-12,png+12); if (count != (ssize_t) (length-12)) { png=(unsigned char *) RelinquishMagickMemory(png); ThrowReaderException(CorruptImageError, "InsufficientImageDataInFile"); } read_info=CloneImageInfo(image_info); (void) CopyMagickString(read_info->magick,"PNG",MaxTextExtent); icon_image=BlobToImage(read_info,png,length+12,exception); read_info=DestroyImageInfo(read_info); png=(unsigned char *) RelinquishMagickMemory(png); if (icon_image == (Image *) NULL) { image=DestroyImageList(image); return((Image *) NULL); } DestroyBlob(icon_image); icon_image->blob=ReferenceBlob(image->blob); ReplaceImageInList(&image,icon_image); } else { icon_info.planes=ReadBlobLSBShort(image); icon_info.bits_per_pixel=ReadBlobLSBShort(image); if (icon_info.bits_per_pixel > 32) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); icon_info.compression=ReadBlobLSBLong(image); icon_info.image_size=ReadBlobLSBLong(image); icon_info.x_pixels=ReadBlobLSBLong(image); icon_info.y_pixels=ReadBlobLSBLong(image); icon_info.number_colors=ReadBlobLSBLong(image); icon_info.colors_important=ReadBlobLSBLong(image); image->matte=MagickTrue; image->columns=(size_t) icon_file.directory[i].width; if ((ssize_t) image->columns > icon_info.width) image->columns=(size_t) icon_info.width; image->rows=(size_t) icon_file.directory[i].height; if ((ssize_t) image->rows > icon_info.height) image->rows=(size_t) icon_info.height; image->depth=icon_info.bits_per_pixel; if (image->debug != MagickFalse) { (void) LogMagickEvent(CoderEvent,GetMagickModule(), " scene = %.20g",(double) i); (void) LogMagickEvent(CoderEvent,GetMagickModule(), " size = %.20g",(double) icon_info.size); (void) LogMagickEvent(CoderEvent,GetMagickModule(), " width = %.20g",(double) icon_file.directory[i].width); (void) LogMagickEvent(CoderEvent,GetMagickModule(), " height = %.20g",(double) icon_file.directory[i].height); (void) LogMagickEvent(CoderEvent,GetMagickModule(), " colors = %.20g",(double ) icon_info.number_colors); (void) LogMagickEvent(CoderEvent,GetMagickModule(), " planes = %.20g",(double) icon_info.planes); (void) LogMagickEvent(CoderEvent,GetMagickModule(), " bpp = %.20g",(double) icon_info.bits_per_pixel); } if ((icon_info.number_colors != 0) || (icon_info.bits_per_pixel <= 16)) { image->storage_class=PseudoClass; image->colors=icon_info.number_colors; if (image->colors == 0) image->colors=one << icon_info.bits_per_pixel; } if (image->storage_class == PseudoClass) { register ssize_t i; size_t number_colors, one; unsigned char *icon_colormap; /* Read Icon raster colormap. */ one=1; number_colors=one << icon_info.bits_per_pixel; if (AcquireImageColormap(image,number_colors) == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); icon_colormap=(unsigned char *) AcquireQuantumMemory((size_t) image->colors,4UL*sizeof(*icon_colormap)); if (icon_colormap == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); count=ReadBlob(image,(size_t) (4*image->colors),icon_colormap); if (count != (ssize_t) (4*image->colors)) ThrowReaderException(CorruptImageError, "InsufficientImageDataInFile"); p=icon_colormap; for (i=0; i < (ssize_t) image->colors; i++) { image->colormap[i].blue=(Quantum) ScaleCharToQuantum(*p++); image->colormap[i].green=(Quantum) ScaleCharToQuantum(*p++); image->colormap[i].red=(Quantum) ScaleCharToQuantum(*p++); p++; } icon_colormap=(unsigned char *) RelinquishMagickMemory(icon_colormap); } /* Convert Icon raster image to pixel packets. */ if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; bytes_per_line=(((image->columns*icon_info.bits_per_pixel)+31) & ~31) >> 3; (void) bytes_per_line; scanline_pad=((((image->columns*icon_info.bits_per_pixel)+31) & ~31)- (image->columns*icon_info.bits_per_pixel)) >> 3; switch (icon_info.bits_per_pixel) { case 1: { /* Convert bitmap scanline. */ for (y=(ssize_t) image->rows-1; y >= 0; y--) { q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; indexes=GetAuthenticIndexQueue(image); for (x=0; x < (ssize_t) (image->columns-7); x+=8) { byte=(size_t) ReadBlobByte(image); for (bit=0; bit < 8; bit++) SetIndexPixelComponent(indexes+x+bit, ((byte & (0x80 >> bit)) != 0 ? 0x01 : 0x00)); } if ((image->columns % 8) != 0) { byte=(size_t) ReadBlobByte(image); for (bit=0; bit < (image->columns % 8); bit++) SetIndexPixelComponent(indexes+x+bit, ((byte & (0x80 >> bit)) != 0 ? 0x01 : 0x00)); } for (x=0; x < (ssize_t) scanline_pad; x++) (void) ReadBlobByte(image); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,image->rows-y-1, image->rows); if (status == MagickFalse) break; } } break; } case 4: { /* Read 4-bit Icon scanline. */ for (y=(ssize_t) image->rows-1; y >= 0; y--) { q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; indexes=GetAuthenticIndexQueue(image); for (x=0; x < ((ssize_t) image->columns-1); x+=2) { byte=(size_t) ReadBlobByte(image); SetIndexPixelComponent(indexes+x,((byte >> 4) & 0xf)); SetIndexPixelComponent(indexes+x+1,((byte) & 0xf)); } if ((image->columns % 2) != 0) { byte=(size_t) ReadBlobByte(image); SetIndexPixelComponent(indexes+x,((byte >> 4) & 0xf)); } for (x=0; x < (ssize_t) scanline_pad; x++) (void) ReadBlobByte(image); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,image->rows-y-1, image->rows); if (status == MagickFalse) break; } } break; } case 8: { /* Convert PseudoColor scanline. */ for (y=(ssize_t) image->rows-1; y >= 0; y--) { q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; indexes=GetAuthenticIndexQueue(image); for (x=0; x < (ssize_t) image->columns; x++) { byte=(size_t) ReadBlobByte(image); SetIndexPixelComponent(indexes+x,byte); } for (x=0; x < (ssize_t) scanline_pad; x++) (void) ReadBlobByte(image); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,image->rows-y-1, image->rows); if (status == MagickFalse) break; } } break; } case 16: { /* Convert PseudoColor scanline. */ for (y=(ssize_t) image->rows-1; y >= 0; y--) { q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; indexes=GetAuthenticIndexQueue(image); for (x=0; x < (ssize_t) image->columns; x++) { byte=(size_t) ReadBlobByte(image); byte|=(size_t) (ReadBlobByte(image) << 8); SetIndexPixelComponent(indexes+x,byte); } for (x=0; x < (ssize_t) scanline_pad; x++) (void) ReadBlobByte(image); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,image->rows-y-1, image->rows); if (status == MagickFalse) break; } } break; } case 24: case 32: { /* Convert DirectColor scanline. */ for (y=(ssize_t) image->rows-1; y >= 0; y--) { q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; for (x=0; x < (ssize_t) image->columns; x++) { SetBluePixelComponent(q,ScaleCharToQuantum((unsigned char) ReadBlobByte(image))); SetGreenPixelComponent(q,ScaleCharToQuantum((unsigned char) ReadBlobByte(image))); SetRedPixelComponent(q,ScaleCharToQuantum((unsigned char) ReadBlobByte(image))); if (icon_info.bits_per_pixel == 32) SetOpacityPixelComponent(q,(QuantumRange-ScaleCharToQuantum( (unsigned char) ReadBlobByte(image)))); q++; } if (icon_info.bits_per_pixel == 24) for (x=0; x < (ssize_t) scanline_pad; x++) (void) ReadBlobByte(image); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,image->rows-y-1, image->rows); if (status == MagickFalse) break; } } break; } default: ThrowReaderException(CorruptImageError,"ImproperImageHeader"); } if (image_info->ping == MagickFalse) (void) SyncImage(image); if (icon_info.bits_per_pixel != 32) { /* Read the ICON alpha mask. */ image->storage_class=DirectClass; for (y=(ssize_t) image->rows-1; y >= 0; y--) { q=GetAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; for (x=0; x < ((ssize_t) image->columns-7); x+=8) { byte=(size_t) ReadBlobByte(image); for (bit=0; bit < 8; bit++) SetOpacityPixelComponent(q+x+bit,(((byte & (0x80 >> bit)) != 0) ? TransparentOpacity : OpaqueOpacity)); } if ((image->columns % 8) != 0) { byte=(size_t) ReadBlobByte(image); for (bit=0; bit < (image->columns % 8); bit++) SetOpacityPixelComponent(q+x+bit,(((byte & (0x80 >> bit)) != 0) ? TransparentOpacity : OpaqueOpacity)); } if ((image->columns % 32) != 0) for (x=0; x < (ssize_t) ((32-(image->columns % 32))/8); x++) (void) ReadBlobByte(image); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } } if (EOFBlob(image) != MagickFalse) { ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } } /* Proceed to next image. */ if (image_info->number_scenes != 0) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; if (i < (ssize_t) (icon_file.count-1)) { /* Allocate next image structure. */ AcquireNextImage(image_info,image); if (GetNextImageInList(image) == (Image *) NULL) { image=DestroyImageList(image); return((Image *) NULL); } image=SyncNextImageInList(image); status=SetImageProgress(image,LoadImagesTag,TellBlob(image), GetBlobSize(image)); if (status == MagickFalse) break; } } (void) CloseBlob(image); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r I C O N I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterICONImage() adds attributes for the Icon image format to % the list of supported formats. The attributes include the image format % tag, a method to read and/or write the format, whether the format % supports the saving of more than one frame to the same file or blob, % whether the format supports native in-memory I/O, and a brief % description of the format. % % The format of the RegisterICONImage method is: % % size_t RegisterICONImage(void) % */ ModuleExport size_t RegisterICONImage(void) { MagickInfo *entry; entry=SetMagickInfo("CUR"); entry->decoder=(DecodeImageHandler *) ReadICONImage; entry->encoder=(EncodeImageHandler *) WriteICONImage; entry->adjoin=MagickFalse; entry->seekable_stream=MagickTrue; entry->description=ConstantString("Microsoft icon"); entry->module=ConstantString("CUR"); (void) RegisterMagickInfo(entry); entry=SetMagickInfo("ICO"); entry->decoder=(DecodeImageHandler *) ReadICONImage; entry->encoder=(EncodeImageHandler *) WriteICONImage; entry->adjoin=MagickTrue; entry->seekable_stream=MagickTrue; entry->description=ConstantString("Microsoft icon"); entry->module=ConstantString("ICON"); (void) RegisterMagickInfo(entry); entry=SetMagickInfo("ICON"); entry->decoder=(DecodeImageHandler *) ReadICONImage; entry->encoder=(EncodeImageHandler *) WriteICONImage; entry->adjoin=MagickFalse; entry->seekable_stream=MagickTrue; entry->description=ConstantString("Microsoft icon"); entry->module=ConstantString("ICON"); (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r I C O N I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % UnregisterICONImage() removes format registrations made by the % ICON module from the list of supported formats. % % The format of the UnregisterICONImage method is: % % UnregisterICONImage(void) % */ ModuleExport void UnregisterICONImage(void) { (void) UnregisterMagickInfo("CUR"); (void) UnregisterMagickInfo("ICO"); (void) UnregisterMagickInfo("ICON"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e I C O N I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteICONImage() writes an image in Microsoft Windows bitmap encoded % image format, version 3 for Windows or (if the image has a matte channel) % version 4. % % The format of the WriteICONImage method is: % % MagickBooleanType WriteICONImage(const ImageInfo *image_info, % Image *image) % % A description of each parameter follows. % % o image_info: the image info. % % o image: The image. % */ static MagickBooleanType WriteICONImage(const ImageInfo *image_info, Image *image) { IconFile icon_file; IconInfo icon_info; Image *next; MagickBooleanType status; MagickOffsetType offset, scene; register const IndexPacket *indexes; register const PixelPacket *p; register ssize_t i, x; register unsigned char *q; size_t bytes_per_line, scanline_pad; ssize_t y; unsigned char bit, byte, *pixels; /* Open output image file. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); assert(image != (Image *) NULL); assert(image->signature == MagickSignature); (void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image->filename); status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception); if (status == MagickFalse) return(status); scene=0; next=image; do { if ((image->columns > 256L) || (image->rows > 256L)) ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit"); scene++; next=SyncNextImageInList(next); } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse)); /* Dump out a ICON header template to be properly initialized later. */ (void) WriteBlobLSBShort(image,0); (void) WriteBlobLSBShort(image,1); (void) WriteBlobLSBShort(image,(unsigned char) scene); (void) ResetMagickMemory(&icon_file,0,sizeof(icon_file)); (void) ResetMagickMemory(&icon_info,0,sizeof(icon_info)); scene=0; next=image; do { (void) WriteBlobByte(image,icon_file.directory[scene].width); (void) WriteBlobByte(image,icon_file.directory[scene].height); (void) WriteBlobByte(image,icon_file.directory[scene].colors); (void) WriteBlobByte(image,icon_file.directory[scene].reserved); (void) WriteBlobLSBShort(image,icon_file.directory[scene].planes); (void) WriteBlobLSBShort(image,icon_file.directory[scene].bits_per_pixel); (void) WriteBlobLSBLong(image,(unsigned int) icon_file.directory[scene].size); (void) WriteBlobLSBLong(image,(unsigned int) icon_file.directory[scene].offset); scene++; next=SyncNextImageInList(next); } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse)); scene=0; next=image; do { if ((next->columns == 256) && (next->rows == 256)) { Image *write_image; ImageInfo *write_info; size_t length; unsigned char *png; /* Icon image encoded as a compressed PNG image. */ write_image=CloneImage(next,0,0,MagickTrue,&image->exception); if (write_image == (Image *) NULL) return(MagickFalse); write_info=CloneImageInfo(image_info); (void) CopyMagickString(write_info->filename,"PNG:",MaxTextExtent); png=(unsigned char *) ImageToBlob(write_info,write_image,&length, &image->exception); write_image=DestroyImage(write_image); write_info=DestroyImageInfo(write_info); if (png == (unsigned char *) NULL) return(MagickFalse); icon_file.directory[scene].width=0; icon_file.directory[scene].height=0; icon_file.directory[scene].colors=0; icon_file.directory[scene].reserved=0; icon_file.directory[scene].planes=1; icon_file.directory[scene].bits_per_pixel=32; icon_file.directory[scene].size=(size_t) length; icon_file.directory[scene].offset=(size_t) TellBlob(image); (void) WriteBlob(image,(size_t) length,png); png=(unsigned char *) RelinquishMagickMemory(png); } else { /* Initialize ICON raster file header. */ if (next->colorspace != RGBColorspace) (void) TransformImageColorspace(next,RGBColorspace); icon_info.file_size=14+12+28; icon_info.offset_bits=icon_info.file_size; icon_info.compression=BI_RGB; if ((next->storage_class != DirectClass) && (next->colors > 256)) (void) SetImageStorageClass(next,DirectClass); if (next->storage_class == DirectClass) { /* Full color ICON raster. */ icon_info.number_colors=0; icon_info.bits_per_pixel=32; icon_info.compression=(size_t) BI_RGB; } else { size_t one; /* Colormapped ICON raster. */ icon_info.bits_per_pixel=8; if (next->colors <= 256) icon_info.bits_per_pixel=8; if (next->colors <= 16) icon_info.bits_per_pixel=4; if (next->colors <= 2) icon_info.bits_per_pixel=1; one=1; icon_info.number_colors=one << icon_info.bits_per_pixel; if (icon_info.number_colors < next->colors) { (void) SetImageStorageClass(next,DirectClass); icon_info.number_colors=0; icon_info.bits_per_pixel=(unsigned short) 24; icon_info.compression=(size_t) BI_RGB; } else { size_t one; one=1; icon_info.file_size+=3*(one << icon_info.bits_per_pixel); icon_info.offset_bits+=3*(one << icon_info.bits_per_pixel); icon_info.file_size+=(one << icon_info.bits_per_pixel); icon_info.offset_bits+=(one << icon_info.bits_per_pixel); } } bytes_per_line=(((next->columns*icon_info.bits_per_pixel)+31) & ~31) >> 3; icon_info.ba_offset=0; icon_info.width=(ssize_t) next->columns; icon_info.height=(ssize_t) next->rows; icon_info.planes=1; icon_info.image_size=bytes_per_line*next->rows; icon_info.size=40; icon_info.size+=(4*icon_info.number_colors); icon_info.size+=icon_info.image_size; icon_info.size+=(((icon_info.width+31) & ~31) >> 3)*icon_info.height; icon_info.file_size+=icon_info.image_size; icon_info.x_pixels=0; icon_info.y_pixels=0; switch (next->units) { case UndefinedResolution: case PixelsPerInchResolution: { icon_info.x_pixels=(size_t) (100.0*next->x_resolution/2.54); icon_info.y_pixels=(size_t) (100.0*next->y_resolution/2.54); break; } case PixelsPerCentimeterResolution: { icon_info.x_pixels=(size_t) (100.0*next->x_resolution); icon_info.y_pixels=(size_t) (100.0*next->y_resolution); break; } } icon_info.colors_important=icon_info.number_colors; /* Convert MIFF to ICON raster pixels. */ pixels=(unsigned char *) AcquireQuantumMemory((size_t) icon_info.image_size,sizeof(*pixels)); if (pixels == (unsigned char *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); (void) ResetMagickMemory(pixels,0,(size_t) icon_info.image_size); switch (icon_info.bits_per_pixel) { case 1: { size_t bit, byte; /* Convert PseudoClass image to a ICON monochrome image. */ for (y=0; y < (ssize_t) next->rows; y++) { p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception); if (p == (const PixelPacket *) NULL) break; indexes=GetVirtualIndexQueue(next); q=pixels+(next->rows-y-1)*bytes_per_line; bit=0; byte=0; for (x=0; x < (ssize_t) next->columns; x++) { byte<<=1; byte|=GetIndexPixelComponent(indexes+x) != 0 ? 0x01 : 0x00; bit++; if (bit == 8) { *q++=(unsigned char) byte; bit=0; byte=0; } } if (bit != 0) *q++=(unsigned char) (byte << (8-bit)); if (next->previous == (Image *) NULL) { status=SetImageProgress(next,SaveImageTag,y,next->rows); if (status == MagickFalse) break; } } break; } case 4: { size_t nibble, byte; /* Convert PseudoClass image to a ICON monochrome image. */ for (y=0; y < (ssize_t) next->rows; y++) { p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception); if (p == (const PixelPacket *) NULL) break; indexes=GetVirtualIndexQueue(next); q=pixels+(next->rows-y-1)*bytes_per_line; nibble=0; byte=0; for (x=0; x < (ssize_t) next->columns; x++) { byte<<=4; byte|=((size_t) GetIndexPixelComponent(indexes+x) & 0x0f); nibble++; if (nibble == 2) { *q++=(unsigned char) byte; nibble=0; byte=0; } } if (nibble != 0) *q++=(unsigned char) (byte << 4); if (next->previous == (Image *) NULL) { status=SetImageProgress(next,SaveImageTag,y,next->rows); if (status == MagickFalse) break; } } break; } case 8: { /* Convert PseudoClass packet to ICON pixel. */ for (y=0; y < (ssize_t) next->rows; y++) { p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception); if (p == (const PixelPacket *) NULL) break; indexes=GetVirtualIndexQueue(next); q=pixels+(next->rows-y-1)*bytes_per_line; for (x=0; x < (ssize_t) next->columns; x++) *q++=(unsigned char) GetIndexPixelComponent(indexes+x); if (next->previous == (Image *) NULL) { status=SetImageProgress(next,SaveImageTag,y,next->rows); if (status == MagickFalse) break; } } break; } case 24: case 32: { /* Convert DirectClass packet to ICON BGR888 or BGRA8888 pixel. */ for (y=0; y < (ssize_t) next->rows; y++) { p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception); if (p == (const PixelPacket *) NULL) break; q=pixels+(next->rows-y-1)*bytes_per_line; for (x=0; x < (ssize_t) next->columns; x++) { *q++=ScaleQuantumToChar(GetBluePixelComponent(p)); *q++=ScaleQuantumToChar(GetGreenPixelComponent(p)); *q++=ScaleQuantumToChar(GetRedPixelComponent(p)); if (next->matte == MagickFalse) *q++=ScaleQuantumToChar(QuantumRange); else *q++=ScaleQuantumToChar(GetAlphaPixelComponent(p)); p++; } if (icon_info.bits_per_pixel == 24) for (x=3L*(ssize_t) next->columns; x < (ssize_t) bytes_per_line; x++) *q++=0x00; if (next->previous == (Image *) NULL) { status=SetImageProgress(next,SaveImageTag,y,next->rows); if (status == MagickFalse) break; } } break; } } /* Write 40-byte version 3+ bitmap header. */ icon_file.directory[scene].width=(unsigned char) icon_info.width; icon_file.directory[scene].height=(unsigned char) icon_info.height; icon_file.directory[scene].colors=(unsigned char) icon_info.number_colors; icon_file.directory[scene].reserved=0; icon_file.directory[scene].planes=icon_info.planes; icon_file.directory[scene].bits_per_pixel=icon_info.bits_per_pixel; icon_file.directory[scene].size=icon_info.size; icon_file.directory[scene].offset=(size_t) TellBlob(image); (void) WriteBlobLSBLong(image,(unsigned int) 40); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.width); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.height*2); (void) WriteBlobLSBShort(image,icon_info.planes); (void) WriteBlobLSBShort(image,icon_info.bits_per_pixel); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.compression); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.image_size); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.x_pixels); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.y_pixels); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.number_colors); (void) WriteBlobLSBLong(image,(unsigned int) icon_info.colors_important); if (next->storage_class == PseudoClass) { unsigned char *icon_colormap; /* Dump colormap to file. */ icon_colormap=(unsigned char *) AcquireQuantumMemory((size_t) (1UL << icon_info.bits_per_pixel),4UL*sizeof(*icon_colormap)); if (icon_colormap == (unsigned char *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); q=icon_colormap; for (i=0; i < (ssize_t) next->colors; i++) { *q++=ScaleQuantumToChar(next->colormap[i].blue); *q++=ScaleQuantumToChar(next->colormap[i].green); *q++=ScaleQuantumToChar(next->colormap[i].red); *q++=(unsigned char) 0x0; } for ( ; i < (ssize_t) (1UL << icon_info.bits_per_pixel); i++) { *q++=(unsigned char) 0x00; *q++=(unsigned char) 0x00; *q++=(unsigned char) 0x00; *q++=(unsigned char) 0x00; } (void) WriteBlob(image,(size_t) (4UL*(1UL << icon_info.bits_per_pixel)),icon_colormap); icon_colormap=(unsigned char *) RelinquishMagickMemory( icon_colormap); } (void) WriteBlob(image,(size_t) icon_info.image_size,pixels); pixels=(unsigned char *) RelinquishMagickMemory(pixels); /* Write matte mask. */ scanline_pad=(((next->columns+31) & ~31)-next->columns) >> 3; for (y=((ssize_t) next->rows - 1); y >= 0; y--) { p=GetVirtualPixels(next,0,y,next->columns,1,&next->exception); if (p == (const PixelPacket *) NULL) break; bit=0; byte=0; for (x=0; x < (ssize_t) next->columns; x++) { byte<<=1; if ((next->matte == MagickTrue) && (GetOpacityPixelComponent(p) == (Quantum) TransparentOpacity)) byte|=0x01; bit++; if (bit == 8) { (void) WriteBlobByte(image,(unsigned char) byte); bit=0; byte=0; } p++; } if (bit != 0) (void) WriteBlobByte(image,(unsigned char) (byte << (8-bit))); for (i=0; i < (ssize_t) scanline_pad; i++) (void) WriteBlobByte(image,(unsigned char) 0); } } if (GetNextImageInList(next) == (Image *) NULL) break; next=SyncNextImageInList(next); status=SetImageProgress(next,SaveImagesTag,scene++, GetImageListLength(next)); if (status == MagickFalse) break; } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse)); offset=SeekBlob(image,0,SEEK_SET); (void) offset; (void) WriteBlobLSBShort(image,0); (void) WriteBlobLSBShort(image,1); (void) WriteBlobLSBShort(image,(unsigned short) (scene+1)); scene=0; next=image; do { (void) WriteBlobByte(image,icon_file.directory[scene].width); (void) WriteBlobByte(image,icon_file.directory[scene].height); (void) WriteBlobByte(image,icon_file.directory[scene].colors); (void) WriteBlobByte(image,icon_file.directory[scene].reserved); (void) WriteBlobLSBShort(image,icon_file.directory[scene].planes); (void) WriteBlobLSBShort(image,icon_file.directory[scene].bits_per_pixel); (void) WriteBlobLSBLong(image,(unsigned int) icon_file.directory[scene].size); (void) WriteBlobLSBLong(image,(unsigned int) icon_file.directory[scene].offset); scene++; next=SyncNextImageInList(next); } while ((next != (Image *) NULL) && (image_info->adjoin != MagickFalse)); (void) CloseBlob(image); return(MagickTrue); }