/*
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% %
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% G e t I m a g e T y p e %
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%
% GetImageType() returns the potential type of image:
%
% Bilevel Grayscale GrayscaleMatte
% Palette PaletteMatte TrueColor
% TrueColorMatte ColorSeparation ColorSeparationMatte
%
% To ensure the image type matches its potential, use SetImageType():
%
% (void) SetImageType(image,GetImageType(image));
%
% The format of the GetImageType method is:
%
% ImageType GetImageType(const Image *image,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport ImageType GetImageType(const Image *image,ExceptionInfo *exception)
{
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (image->colorspace == CMYKColorspace)
{
if (image->alpha_trait != BlendPixelTrait)
return(ColorSeparationType);
return(ColorSeparationMatteType);
}
if (IsImageMonochrome(image,exception) != MagickFalse)
return(BilevelType);
if (IsImageGray(image,exception) != MagickFalse)
{
if (image->alpha_trait == BlendPixelTrait)
return(GrayscaleMatteType);
return(GrayscaleType);
}
if (IsPaletteImage(image,exception) != MagickFalse)
{
if (image->alpha_trait == BlendPixelTrait)
return(PaletteMatteType);
return(PaletteType);
}
if (image->alpha_trait == BlendPixelTrait)
return(TrueColorMatteType);
return(TrueColorType);
}
/*
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% W r i t e M A P I m a g e %
% %
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%
% WriteMAPImage() writes an image to a file as red, green, and blue
% colormap bytes followed by the colormap indexes.
%
% The format of the WriteMAPImage method is:
%
% MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: The image info.
%
% o image: The image.
%
%
*/
static MagickBooleanType WriteMAPImage(const ImageInfo *image_info,Image *image)
{
long
y;
MagickBooleanType
status;
register IndexPacket
*indexes;
register const PixelPacket
*p;
register long
i,
x;
register unsigned char
*q;
size_t
packet_size;
unsigned char
*colormap,
*pixels;
unsigned long
depth;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
if (image_info->colorspace == UndefinedColorspace)
(void) SetImageColorspace(image,RGBColorspace);
/*
Allocate colormap.
*/
if (IsPaletteImage(image,&image->exception) == MagickFalse)
(void) SetImageType(image,PaletteType);
depth=GetImageQuantumDepth(image,MagickTrue);
packet_size=(size_t) (depth/8);
pixels=(unsigned char *) AcquireQuantumMemory(image->columns,packet_size*
sizeof(*pixels));
packet_size=(size_t) (image->colors > 256 ? 6UL : 3UL);
colormap=(unsigned char *) AcquireQuantumMemory(image->colors,packet_size*
sizeof(*colormap));
if ((pixels == (unsigned char *) NULL) ||
(colormap == (unsigned char *) NULL))
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
/*
Write colormap to file.
*/
q=colormap;
if (image->depth <= 8)
for (i=0; i < (long) image->colors; i++)
{
*q++=(unsigned char) image->colormap[i].red;
*q++=(unsigned char) image->colormap[i].green;
*q++=(unsigned char) image->colormap[i].blue;
}
else
for (i=0; i < (long) image->colors; i++)
{
*q++=(unsigned char) ((unsigned long) image->colormap[i].red >> 8);
*q++=(unsigned char) image->colormap[i].red;
*q++=(unsigned char) ((unsigned long) image->colormap[i].green >> 8);
*q++=(unsigned char) image->colormap[i].green;
*q++=(unsigned char) ((unsigned long) image->colormap[i].blue >> 8);
*q++=(unsigned char) image->colormap[i].blue;
}
(void) WriteBlob(image,packet_size*image->colors,colormap);
colormap=(unsigned char *) RelinquishMagickMemory(colormap);
/*
Write image pixels to file.
*/
for (y=0; y < (long) image->rows; y++)
{
p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
indexes=GetIndexes(image);
q=pixels;
for (x=0; x < (long) image->columns; x++)
{
if (image->colors > 256)
*q++=(unsigned char) ((unsigned long) indexes[x] >> 8);
*q++=(unsigned char) indexes[x];
}
(void) WriteBlob(image,(size_t) (q-pixels),pixels);
}
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
CloseBlob(image);
return(status);
}
/*
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% W r i t e E P T I m a g e %
% %
% %
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%
% WriteEPTImage() writes an image in the Encapsulated Postscript format
% with a TIFF preview.
%
% The format of the WriteEPTImage method is:
%
% MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
{
char
filename[MaxTextExtent];
EPTInfo
ept_info;
Image
*write_image;
ImageInfo
*write_info;
MagickBooleanType
status;
/*
Write EPT image.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
if (write_image == (Image *) NULL)
return(MagickFalse);
write_info=CloneImageInfo(image_info);
(void) CopyMagickString(write_info->magick,"EPS",MaxTextExtent);
if (LocaleCompare(image_info->magick,"EPT2") == 0)
(void) CopyMagickString(write_info->magick,"EPS2",MaxTextExtent);
if (LocaleCompare(image_info->magick,"EPT3") == 0)
(void) CopyMagickString(write_info->magick,"EPS3",MaxTextExtent);
(void) ResetMagickMemory(&ept_info,0,sizeof(ept_info));
ept_info.magick=0xc6d3d0c5ul;
ept_info.postscript=(unsigned char *) ImageToBlob(write_info,write_image,
&ept_info.postscript_length,&image->exception);
write_image=DestroyImage(write_image);
write_info=DestroyImageInfo(write_info);
if (ept_info.postscript == (void *) NULL)
return(MagickFalse);
write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
if (write_image == (Image *) NULL)
return(MagickFalse);
write_info=CloneImageInfo(image_info);
(void) CopyMagickString(write_info->magick,"TIFF",MaxTextExtent);
(void) FormatMagickString(filename,MaxTextExtent,"tiff:%.1024s",
write_info->filename);
(void) CopyMagickString(write_info->filename,filename,MaxTextExtent);
(void) TransformImage(&write_image,(char *) NULL,"512x512>");
if ((write_image->storage_class == DirectClass) ||
(write_image->colors > 256))
{
QuantizeInfo
quantize_info;
/*
EPT preview requires that the image is colormapped.
*/
GetQuantizeInfo(&quantize_info);
quantize_info.dither=IsPaletteImage(write_image,&image->exception) ==
MagickFalse ? MagickTrue : MagickFalse;
(void) QuantizeImage(&quantize_info,write_image);
}
write_info->compression=NoCompression;
ept_info.tiff=(unsigned char *) ImageToBlob(write_info,write_image,
&ept_info.tiff_length,&image->exception);
write_image=DestroyImage(write_image);
write_info=DestroyImageInfo(write_info);
if (ept_info.tiff == (void *) NULL)
{
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
ept_info.postscript);
return(MagickFalse);
}
/*
Write EPT image.
*/
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.magick);
(void) WriteBlobLSBLong(image,30);
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length);
(void) WriteBlobLSBLong(image,0);
(void) WriteBlobLSBLong(image,0);
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length+30);
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.tiff_length);
(void) WriteBlobLSBShort(image,0xffff);
(void) WriteBlob(image,ept_info.postscript_length,ept_info.postscript);
(void) WriteBlob(image,ept_info.tiff_length,ept_info.tiff);
/*
Relinquish resources.
*/
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
ept_info.postscript);
ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
(void) CloseBlob(image);
return(MagickTrue);
}
