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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% M M AAA TTTTT TTTTT EEEEE %
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% MM MM A A T T E %
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% M M M AAAAA T T EEE %
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% M M A A T T E %
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% M M A A T T EEEEE %
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% %
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% %
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% Write Matte Channel To MIFF File. %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/attribute.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/constitute.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/monitor.h"
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#include "MagickCore/monitor-private.h"
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#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/module.h"
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteMATTEImage(const ImageInfo *,Image *,ExceptionInfo *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e g i s t e r M A T T E I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% RegisterMATTEImage() adds attributes for the MATTE image format to
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% the list of supported formats. The attributes include the image format
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% tag, a method to read and/or write the format, whether the format
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% supports the saving of more than one frame to the same file or blob,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterMATTEImage method is:
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%
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% size_t RegisterMATTEImage(void)
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%
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*/
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ModuleExport size_t RegisterMATTEImage(void)
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{
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MagickInfo
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*entry;
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entry=AcquireMagickInfo("MATTE","MATTE","MATTE format");
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entry->encoder=(EncodeImageHandler *) WriteMATTEImage;
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entry->format_type=ExplicitFormatType;
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(void) RegisterMagickInfo(entry);
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return(MagickImageCoderSignature);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% U n r e g i s t e r M A T T E I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% UnregisterMATTEImage() removes format registrations made by the
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% MATTE module from the list of supported formats.
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%
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% The format of the UnregisterMATTEImage method is:
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%
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% UnregisterMATTEImage(void)
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%
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*/
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ModuleExport void UnregisterMATTEImage(void)
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{
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(void) UnregisterMagickInfo("MATTE");
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% W r i t e M A T T E I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% WriteMATTEImage() writes an image of matte bytes to a file. It consists of
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% data from the matte component of the image [0..255].
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%
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% The format of the WriteMATTEImage method is:
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%
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% MagickBooleanType WriteMATTEImage(const ImageInfo *image_info,
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% Image *image,ExceptionInfo *exception)
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%
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% A description of each parameter follows.
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%
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% o image_info: the image info.
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%
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% o image: The image.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static MagickBooleanType WriteMATTEImage(const ImageInfo *image_info,
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Image *image,ExceptionInfo *exception)
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{
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Image
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*matte_image;
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ImageInfo
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*write_info;
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MagickBooleanType
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status;
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const Quantum
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*p;
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ssize_t
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x;
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Quantum
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*q;
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ssize_t
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y;
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if (image->alpha_trait == UndefinedPixelTrait)
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ThrowWriterException(CoderError,"ImageDoesNotHaveAnAlphaChannel");
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matte_image=CloneImage(image,0,0,MagickTrue,exception);
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if (matte_image == (Image *) NULL)
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return(MagickFalse);
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(void) SetImageType(matte_image,TrueColorAlphaType,exception);
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matte_image->alpha_trait=UndefinedPixelTrait;
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/*
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Convert image to matte pixels.
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*/
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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p=GetVirtualPixels(image,0,y,image->columns,1,exception);
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q=QueueAuthenticPixels(matte_image,0,y,matte_image->columns,1,exception);
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if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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SetPixelRed(matte_image,GetPixelAlpha(image,p),q);
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SetPixelGreen(matte_image,GetPixelAlpha(image,p),q);
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SetPixelBlue(matte_image,GetPixelAlpha(image,p),q);
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SetPixelAlpha(matte_image,OpaqueAlpha,q);
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p+=GetPixelChannels(image);
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q+=GetPixelChannels(matte_image);
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}
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if (SyncAuthenticPixels(matte_image,exception) == MagickFalse)
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break;
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status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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write_info=CloneImageInfo(image_info);
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if ((*write_info->magick == '\0') ||
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(LocaleCompare(write_info->magick,"MATTE") == 0))
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(void) FormatLocaleString(matte_image->filename,MagickPathExtent,
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"MIFF:%s",image->filename);
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status=WriteImage(write_info,matte_image,exception);
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write_info=DestroyImageInfo(write_info);
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matte_image=DestroyImage(matte_image);
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return(status);
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}
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