| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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; |
| |
| ssize_t |
| y; |
| |
| MagickBooleanType |
| status; |
| |
| register IndexPacket |
| *indexes; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register PixelPacket |
| *q; |
| |
| register unsigned char |
| *p; |
| |
| ssize_t |
| count, |
| offset; |
| |
| size_t |
| bit, |
| byte, |
| bytes_per_line, |
| one, |
| scanline_pad; |
| |
| /* |
| 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; |
| |
| unsigned char |
| *icon_colormap; |
| |
| size_t |
| number_colors, |
| one; |
| |
| /* |
| 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++) |
| indexes[x+bit]=(IndexPacket) |
| ((byte & (0x80 >> bit)) != 0 ? 0x01 : 0x00); |
| } |
| if ((image->columns % 8) != 0) |
| { |
| byte=(size_t) ReadBlobByte(image); |
| for (bit=0; bit < (image->columns % 8); bit++) |
| indexes[x+bit]=(IndexPacket) |
| ((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); |
| indexes[x]=(IndexPacket) ((byte >> 4) & 0xf); |
| indexes[x+1]=(IndexPacket) ((byte) & 0xf); |
| } |
| if ((image->columns % 2) != 0) |
| { |
| byte=(size_t) ReadBlobByte(image); |
| indexes[x]=(IndexPacket) ((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); |
| indexes[x]=(IndexPacket) 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); |
| indexes[x]=(IndexPacket) 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++) |
| { |
| q->blue=ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| q->green=ScaleCharToQuantum((unsigned char) |
| ReadBlobByte(image)); |
| q->red=ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| if (icon_info.bits_per_pixel == 32) |
| q->opacity=(Quantum) (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++) |
| q[x+bit].opacity=(Quantum) (((byte & (0x80 >> bit)) != 0) ? |
| TransparentOpacity : OpaqueOpacity); |
| } |
| if ((image->columns % 8) != 0) |
| { |
| byte=(size_t) ReadBlobByte(image); |
| for (bit=0; bit < (image->columns % 8); bit++) |
| q[x+bit].opacity=(Quantum) (((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; |
| |
| ssize_t |
| y; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| offset, |
| scene; |
| |
| register const IndexPacket |
| *indexes; |
| |
| register const PixelPacket |
| *p; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register unsigned char |
| *q; |
| |
| unsigned char |
| bit, |
| byte, |
| *pixels; |
| |
| size_t |
| bytes_per_line, |
| scanline_pad; |
| |
| /* |
| 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|=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) 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) 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) && |
| (p->opacity == (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); |
| } |