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imagemagick/coders/icon.c

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Import Upstream version 6.9.11.60
2023-02-03 21:16:55 +08:00
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% 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 %
% Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2021 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 %
% %
% https://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/artifact.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/colormap.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.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-base-private.h"
#include "magick/nt-feature.h"
#include "magick/option.h"
#include "magick/pixel-accessor.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 Image
*AutoResizeImage(const Image *,const char *,MagickOffsetType *,
ExceptionInfo *);
static MagickBooleanType
WriteICONImage(const ImageInfo *,Image *);
Image *AutoResizeImage(const Image *image,const char *option,
MagickOffsetType *count,ExceptionInfo *exception)
{
#define MAX_SIZES 16
char
*q;
const char
*p;
Image
*resized,
*images;
ssize_t
i;
size_t
sizes[MAX_SIZES]={256,192,128,96,64,48,40,32,24,16};
images=NULL;
*count=0;
i=0;
p=option;
while (*p != '\0' && i < MAX_SIZES)
{
size_t
size;
while ((isspace((int) ((unsigned char) *p)) != 0))
p++;
size=(size_t)strtol(p,&q,10);
if ((p == q) || (size < 16) || (size > 256))
return((Image *) NULL);
p=q;
sizes[i++]=size;
while ((isspace((int) ((unsigned char) *p)) != 0) || (*p == ','))
p++;
}
if (i==0)
i=10;
*count=i;
for (i=0; i < *count; i++)
{
resized=ResizeImage(image,sizes[i],sizes[i],image->filter,image->blur,
exception);
if (resized == (Image *) NULL)
return(DestroyImageList(images));
if (images == (Image *) NULL)
images=resized;
else
AppendImageToList(&images,resized);
}
return(images);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% 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;
MagickSizeType
extent;
IndexPacket
*indexes;
ssize_t
i,
x;
PixelPacket
*q;
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 == MagickCoreSignature);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
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");
extent=0;
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);
if (EOFBlob(image) != MagickFalse)
break;
extent=MagickMax(extent,icon_file.directory[i].size);
}
if ((EOFBlob(image) != MagickFalse) || (extent > GetBlobSize(image)))
ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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) ReadBlobLSBSignedLong(image);
icon_info.height=(unsigned char) (ReadBlobLSBSignedLong(image)/2);
icon_info.planes=ReadBlobLSBShort(image);
icon_info.bits_per_pixel=ReadBlobLSBShort(image);
if (EOFBlob(image) != MagickFalse)
{
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
break;
}
if (((icon_info.planes == 18505) && (icon_info.bits_per_pixel == 21060)) ||
(icon_info.size == 0x474e5089))
{
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;
if ((length < 16) || (~length < 16))
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
png=(unsigned char *) AcquireQuantumMemory(length,sizeof(*png));
if (png == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
(void) memcpy(png,"\211PNG\r\n\032\n\000\000\000\015",12);
png[12]=(unsigned char) icon_info.planes;
png[13]=(unsigned char) (icon_info.planes >> 8);
png[14]=(unsigned char) icon_info.bits_per_pixel;
png[15]=(unsigned char) (icon_info.bits_per_pixel >> 8);
count=ReadBlob(image,length-16,png+16);
if (count != (ssize_t) (length-16))
{
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,exception);
read_info=DestroyImageInfo(read_info);
png=(unsigned char *) RelinquishMagickMemory(png);
if (icon_image == (Image *) NULL)
return(DestroyImageList(image));
DestroyBlob(icon_image);
icon_image->blob=ReferenceBlob(image->blob);
ReplaceImageInList(&image,icon_image);
icon_image->scene=i;
}
else
{
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);
if (icon_info.number_colors > GetBlobSize(image))
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
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;
if (image->columns == 0)
image->columns=256;
image->rows=(size_t) icon_file.directory[i].height;
if ((ssize_t) image->rows > icon_info.height)
image->rows=(size_t) icon_info.height;
if (image->rows == 0)
image->rows=256;
image->depth=icon_info.bits_per_pixel;
if (image->depth > 16)
image->depth=8;
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 <= 16U))
{
image->storage_class=PseudoClass;
image->colors=icon_info.number_colors;
if ((image->colors == 0) || (image->colors > 256))
image->colors=one << icon_info.bits_per_pixel;
}
if (image->storage_class == PseudoClass)
{
ssize_t
i;
unsigned char
*icon_colormap;
/*
Read Icon raster colormap.
*/
if (image->colors > GetBlobSize(image))
ThrowReaderException(CorruptImageError,
"InsufficientImageDataInFile");
if (AcquireImageColormap(image,image->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))
{
icon_colormap=(unsigned char *) RelinquishMagickMemory(
icon_colormap);
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;
status=SetImageExtent(image,image->columns,image->rows);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
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++)
SetPixelIndex(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++)
SetPixelIndex(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);
SetPixelIndex(indexes+x,((byte >> 4) & 0xf));
SetPixelIndex(indexes+x+1,((byte) & 0xf));
}
if ((image->columns % 2) != 0)
{
byte=(size_t) ReadBlobByte(image);
SetPixelIndex(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);
SetPixelIndex(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);
SetPixelIndex(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++)
{
SetPixelBlue(q,ScaleCharToQuantum((unsigned char)
ReadBlobByte(image)));
SetPixelGreen(q,ScaleCharToQuantum((unsigned char)
ReadBlobByte(image)));
SetPixelRed(q,ScaleCharToQuantum((unsigned char)
ReadBlobByte(image)));
if (icon_info.bits_per_pixel == 32)
SetPixelAlpha(q,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) &&
(icon_info.bits_per_pixel <= 16))
(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++)
SetPixelOpacity(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++)
SetPixelOpacity(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)
{
status=MagickFalse;
break;
}
image=SyncNextImageInList(image);
status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
GetBlobSize(image));
if (status == MagickFalse)
break;
}
}
(void) CloseBlob(image);
if (status == MagickFalse)
return(DestroyImageList(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->magick_module=ConstantString("ICON");
(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->magick_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->magick_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.
%
% It encodes any subimage as a compressed PNG image ("BI_PNG)", only when its
% dimensions are 256x256 and image->compression is undefined or is defined as
% ZipCompression.
%
% 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)
{
const char
*option;
IconFile
icon_file;
IconInfo
icon_info;
Image
*images,
*next;
MagickBooleanType
status;
MagickOffsetType
offset,
scene;
const IndexPacket
*indexes;
const PixelPacket
*p;
ssize_t
i,
x;
unsigned char
*q;
size_t
bytes_per_line,
imageListLength,
scanline_pad;
ssize_t
y;
unsigned char
bit,
byte,
*pixels;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
images=(Image *) NULL;
option=GetImageOption(image_info,"icon:auto-resize");
if (option != (const char *) NULL)
{
images=AutoResizeImage(image,option,&scene,&image->exception);
if (images == (Image *) NULL)
ThrowWriterException(ImageError,"InvalidDimensions");
}
else
{
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) memset(&icon_file,0,sizeof(icon_file));
(void) memset(&icon_info,0,sizeof(icon_info));
scene=0;
next=(images != (Image *) NULL) ? images : 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=(images != (Image *) NULL) ? images : image;
imageListLength=GetImageListLength(image);
do
{
if ((next->columns > 255L) && (next->rows > 255L) &&
((next->compression == UndefinedCompression) ||
(next->compression == ZipCompression)))
{
Image
*write_image;
ImageInfo
*write_info;
size_t
length;
unsigned char
*png;
write_image=CloneImage(next,0,0,MagickTrue,&image->exception);
if (write_image == (Image *) NULL)
{
images=DestroyImageList(images);
return(MagickFalse);
}
write_info=CloneImageInfo(image_info);
(void) CopyMagickString(write_info->magick,"PNG",MagickPathExtent);
length=0;
/* Don't write any ancillary chunks except for gAMA */
(void) SetImageArtifact(write_image,"png:include-chunk","none,gama");
/* Only write PNG32 formatted PNG (32-bit RGBA), 8 bits per channel */
(void) SetImageArtifact(write_image,"png:format","png32");
(void) SetImageArtifact(write_image,"png:color-type","6");
png=(unsigned char *) ImageToBlob(write_info,write_image,&length,
&image->exception);
write_image=DestroyImageList(write_image);
write_info=DestroyImageInfo(write_info);
if (png == (unsigned char *) NULL)
{
images=DestroyImageList(images);
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.
*/
(void) TransformImageColorspace(image,sRGBColorspace);
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 <= 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)
{
images=DestroyImageList(images);
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
}
(void) memset(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|=GetPixelIndex(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) GetPixelIndex(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) ((size_t) GetPixelIndex(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(GetPixelBlue(p));
*q++=ScaleQuantumToChar(GetPixelGreen(p));
*q++=ScaleQuantumToChar(GetPixelRed(p));
if (next->matte == MagickFalse)
*q++=ScaleQuantumToChar(QuantumRange);
else
*q++=ScaleQuantumToChar(GetPixelAlpha(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)
{
images=DestroyImageList(images);
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 != MagickFalse) &&
(GetPixelOpacity(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;
status=SetImageProgress(next,SaveImagesTag,scene++,imageListLength);
if (status == MagickFalse)
break;
next=SyncNextImageInList(next);
} 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=(images != (Image *) NULL) ? images : 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);
images=DestroyImageList(images);
return(MagickTrue);
}