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/*
% Copyright (C) 2003 GraphicsMagick Group
% Copyright (C) 2002 ImageMagick Studio
% Copyright 1991-1999 E. I. du Pont de Nemours and Company
%
% This program is covered by multiple licenses, which are described in
% Copyright.txt. You should have received a copy of Copyright.txt with this
% package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% M M AAA TTTTT TTTTT EEEEE %
% MM MM A A T T E %
% M M M AAAAA T T EEE %
% M M A A T T E %
% M M A A T T EEEEE %
% %
% %
% Write Matte Channel To MIFF File. %
% %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/pixel_cache.h"
#include "magick/constitute.h"
#include "magick/magick.h"
#include "magick/monitor.h"
#include "magick/utility.h"
/*
Forward declarations.
*/
static unsigned int
WriteMATTEImage(const ImageInfo *,Image *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r M A T T E I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterMATTEImage adds attributes for the MATTE 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 RegisterMATTEImage method is:
%
% RegisterMATTEImage(void)
%
*/
ModuleExport void RegisterMATTEImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("MATTE");
entry->encoder=(EncoderHandler) WriteMATTEImage;
entry->raw=True;
entry->description="MATTE raw opacity format";
entry->module="MATTE";
entry->extension_treatment=ObeyExtensionTreatment;
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r M A T T E I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterMATTEImage removes format registrations made by the
% MATTE module from the list of supported formats.
%
% The format of the UnregisterMATTEImage method is:
%
% UnregisterMATTEImage(void)
%
*/
ModuleExport void UnregisterMATTEImage(void)
{
(void) UnregisterMagickInfo("MATTE");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e M A T T E I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Function WriteMATTEImage writes an image of matte bytes to a file. It
% consists of data from the matte component of the image [0..255].
%
% The format of the WriteMATTEImage method is:
%
% unsigned int WriteMATTEImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o status: Function WriteMATTEImage return True if the image is written.
% False is returned is there is a memory shortage or if the image file
% fails to write.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o image: A pointer to an Image structure.
%
%
*/
static unsigned int WriteMATTEImage(const ImageInfo *image_info,Image *image)
{
Image
*matte_image;
long
y;
register const PixelPacket
*p;
register long
x;
register PixelPacket
*q;
unsigned int
status;
if (!image->matte)
ThrowWriterException(CoderError,ImageDoesNotHaveAMatteChannel,image);
matte_image=
CloneImage(image,image->columns,image->rows,True,&image->exception);
if (matte_image == (Image *) NULL)
return(False);
(void) (void) SetImageType(matte_image,TrueColorType);
/*
Convert image to matte pixels.
*/
for (y=0; y < (long) image->rows; y++)
{
p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
q=SetImagePixels(matte_image,0,y,matte_image->columns,1);
if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
for (x=0; x < (long) image->columns; x++)
{
q->red=p->opacity;
q->green=p->opacity;
q->blue=p->opacity;
q->opacity=OpaqueOpacity;
p++;
q++;
}
if (!SyncImagePixels(matte_image))
break;
if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows))
if (!MagickMonitorFormatted(y,image->rows,&image->exception,
SaveImageText,image->filename,
image->columns,image->rows))
break;
}
(void) FormatString(matte_image->filename,"MIFF:%.1024s",image->filename);
status=WriteImage(image_info,matte_image);
DestroyImage(matte_image);
return(status);
}
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