forked from openkylin/imagemagick
1666 lines
54 KiB
C
1666 lines
54 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% AAA TTTTT TTTTT RRRR IIIII BBBB U U TTTTT EEEEE %
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% A A T T R R I B B U U T E %
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% AAAAA T T RRRR I BBBB U U T EEE %
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% A A T T R R I B B U U T E %
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% A A T T R R IIIII BBBB UUU T EEEEE %
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% %
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% %
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% MagickCore Get / Set Image Attributes %
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% %
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% Software Design %
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% Cristy %
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% October 2002 %
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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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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/artifact.h"
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#include "magick/attribute.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/cache.h"
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#include "magick/cache-private.h"
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#include "magick/cache-view.h"
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#include "magick/client.h"
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#include "magick/channel.h"
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#include "magick/color.h"
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#include "magick/color-private.h"
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#include "magick/colormap.h"
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#include "magick/colormap-private.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.h"
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#include "magick/composite.h"
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#include "magick/composite-private.h"
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#include "magick/constitute.h"
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#include "magick/deprecate.h"
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#include "magick/draw.h"
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#include "magick/draw-private.h"
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#include "magick/effect.h"
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#include "magick/enhance.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/geometry.h"
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#include "magick/histogram.h"
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#include "magick/identify.h"
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#include "magick/image.h"
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#include "magick/image-private.h"
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#include "magick/list.h"
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#include "magick/log.h"
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#include "magick/memory_.h"
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#include "magick/magick.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/option.h"
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#include "magick/paint.h"
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#include "magick/pixel.h"
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#include "magick/pixel-private.h"
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#include "magick/property.h"
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#include "magick/quantize.h"
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#include "magick/random_.h"
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#include "magick/resource_.h"
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#include "magick/semaphore.h"
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#include "magick/segment.h"
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#include "magick/splay-tree.h"
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#include "magick/string_.h"
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#include "magick/string-private.h"
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#include "magick/thread-private.h"
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#include "magick/threshold.h"
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#include "magick/transform.h"
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#include "magick/utility.h"
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ G e t I m a g e B o u n d i n g B o x %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetImageBoundingBox() returns the bounding box of an image canvas.
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%
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% The format of the GetImageBoundingBox method is:
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%
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% RectangleInfo GetImageBoundingBox(const Image *image,
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% 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 bounds: Method GetImageBoundingBox returns the bounding box of an
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% image canvas.
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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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typedef struct _EdgeInfo
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{
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double
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left,
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right,
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top,
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bottom;
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} EdgeInfo;
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static double GetEdgeBackgroundFactor(const Image *image,
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const CacheView *image_view,const GravityType gravity,const size_t width,
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const size_t height,const ssize_t x_offset,const ssize_t y_offset,
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ExceptionInfo *exception)
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{
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CacheView
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*edge_view;
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const char
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*artifact;
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double
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factor;
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Image
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*edge_image;
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MagickPixelPacket
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background,
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pixel;
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RectangleInfo
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edge_geometry;
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const PixelPacket
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*p;
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ssize_t
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y;
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/*
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Determine the percent of image background for this edge.
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*/
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switch (gravity)
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{
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case NorthWestGravity:
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case NorthGravity:
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default:
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{
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p=GetCacheViewVirtualPixels(image_view,0,0,1,1,exception);
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break;
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}
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case NorthEastGravity:
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case EastGravity:
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{
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p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,0,1,1,
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exception);
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break;
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}
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case SouthEastGravity:
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case SouthGravity:
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{
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p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,
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(ssize_t) image->rows-1,1,1,exception);
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break;
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}
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case SouthWestGravity:
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case WestGravity:
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{
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p=GetCacheViewVirtualPixels(image_view,0,(ssize_t) image->rows-1,1,1,
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exception);
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break;
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}
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}
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GetMagickPixelPacket(image,&background);
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SetMagickPixelPacket(image,p,(IndexPacket *) NULL,&background);
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artifact=GetImageArtifact(image,"background");
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if (artifact != (const char *) NULL)
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(void) QueryMagickColor(artifact,&background,exception);
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artifact=GetImageArtifact(image,"trim:background-color");
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if (artifact != (const char *) NULL)
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(void) QueryMagickColor(artifact,&background,exception);
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edge_geometry.width=width;
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edge_geometry.height=height;
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edge_geometry.x=x_offset;
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edge_geometry.y=y_offset;
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GravityAdjustGeometry(image->columns,image->rows,gravity,&edge_geometry);
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edge_image=CropImage(image,&edge_geometry,exception);
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if (edge_image == (Image *) NULL)
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return(0.0);
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factor=0.0;
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GetMagickPixelPacket(edge_image,&pixel);
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edge_view=AcquireVirtualCacheView(edge_image,exception);
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for (y=0; y < (ssize_t) edge_image->rows; y++)
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{
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ssize_t
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x;
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p=GetCacheViewVirtualPixels(edge_view,0,y,edge_image->columns,1,exception);
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if (p == (const PixelPacket *) NULL)
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break;
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for (x=0; x < (ssize_t) edge_image->columns; x++)
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{
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SetMagickPixelPacket(edge_image,p,(IndexPacket *) NULL,&pixel);
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if (IsMagickColorSimilar(&pixel,&background) == MagickFalse)
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factor++;
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p++;
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}
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}
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factor/=((double) edge_image->columns*edge_image->rows);
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edge_view=DestroyCacheView(edge_view);
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edge_image=DestroyImage(edge_image);
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return(factor);
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}
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static inline double GetMinEdgeBackgroundFactor(const EdgeInfo *edge)
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{
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double
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factor;
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factor=MagickMin(MagickMin(MagickMin(edge->left,edge->right),edge->top),
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edge->bottom);
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return(factor);
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}
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static RectangleInfo GetEdgeBoundingBox(const Image *image,
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ExceptionInfo *exception)
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{
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CacheView
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*edge_view;
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const char
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*artifact;
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double
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background_factor,
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percent_background;
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EdgeInfo
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edge,
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vertex;
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Image
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*edge_image;
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RectangleInfo
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bounds;
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/*
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Get the image bounding box.
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*/
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assert(image != (Image *) NULL);
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assert(image->signature == MagickCoreSignature);
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if (image->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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SetGeometry(image,&bounds);
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edge_image=CloneImage(image,0,0,MagickTrue,exception);
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if (edge_image == (Image *) NULL)
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return(bounds);
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(void) ParseAbsoluteGeometry("0x0+0+0",&edge_image->page);
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memset(&vertex,0,sizeof(vertex));
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edge_view=AcquireVirtualCacheView(edge_image,exception);
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edge.left=GetEdgeBackgroundFactor(edge_image,edge_view,WestGravity,
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1,0,0,0,exception);
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edge.right=GetEdgeBackgroundFactor(edge_image,edge_view,EastGravity,
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1,0,0,0,exception);
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edge.top=GetEdgeBackgroundFactor(edge_image,edge_view,NorthGravity,
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0,1,0,0,exception);
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edge.bottom=GetEdgeBackgroundFactor(edge_image,edge_view,SouthGravity,
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0,1,0,0,exception);
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percent_background=1.0;
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artifact=GetImageArtifact(edge_image,"trim:percent-background");
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if (artifact != (const char *) NULL)
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percent_background=StringToDouble(artifact,(char **) NULL)/100.0;
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percent_background=MagickMin(MagickMax(1.0-percent_background,MagickEpsilon),
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1.0);
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background_factor=GetMinEdgeBackgroundFactor(&edge);
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for ( ; background_factor < percent_background;
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background_factor=GetMinEdgeBackgroundFactor(&edge))
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{
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if ((bounds.width == 0) || (bounds.height == 0))
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break;
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if (fabs(edge.left-background_factor) < MagickEpsilon)
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{
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/*
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Trim left edge.
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*/
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vertex.left++;
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bounds.width--;
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edge.left=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthWestGravity,1,bounds.height,(ssize_t) vertex.left,(ssize_t)
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vertex.top,exception);
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edge.top=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
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vertex.top,exception);
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edge.bottom=GetEdgeBackgroundFactor(edge_image,edge_view,
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SouthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
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vertex.bottom,exception);
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continue;
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}
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if (fabs(edge.right-background_factor) < MagickEpsilon)
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{
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/*
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Trim right edge.
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*/
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vertex.right++;
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bounds.width--;
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edge.right=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthEastGravity,1,bounds.height,(ssize_t) vertex.right,(ssize_t)
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vertex.top,exception);
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edge.top=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
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vertex.top,exception);
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edge.bottom=GetEdgeBackgroundFactor(edge_image,edge_view,
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SouthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
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vertex.bottom,exception);
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continue;
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}
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if (fabs(edge.top-background_factor) < MagickEpsilon)
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{
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/*
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Trim top edge.
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*/
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vertex.top++;
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bounds.height--;
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edge.left=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthWestGravity,1,bounds.height,(ssize_t) vertex.left,(ssize_t)
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vertex.top,exception);
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edge.right=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthEastGravity,1,bounds.height,(ssize_t) vertex.right,(ssize_t)
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vertex.top,exception);
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edge.top=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
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vertex.top,exception);
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continue;
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}
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if (fabs(edge.bottom-background_factor) < MagickEpsilon)
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{
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/*
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Trim bottom edge.
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*/
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vertex.bottom++;
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bounds.height--;
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edge.left=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthWestGravity,1,bounds.height,(ssize_t) vertex.left,(ssize_t)
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vertex.top,exception);
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edge.right=GetEdgeBackgroundFactor(edge_image,edge_view,
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NorthEastGravity,1,bounds.height,(ssize_t) vertex.right,(ssize_t)
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vertex.top,exception);
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edge.bottom=GetEdgeBackgroundFactor(edge_image,edge_view,
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SouthWestGravity,bounds.width,1,(ssize_t) vertex.left,(ssize_t)
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vertex.bottom,exception);
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continue;
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}
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}
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edge_view=DestroyCacheView(edge_view);
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edge_image=DestroyImage(edge_image);
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bounds.x=(ssize_t) vertex.left;
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bounds.y=(ssize_t) vertex.top;
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if ((bounds.width == 0) || (bounds.height == 0))
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(void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
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"GeometryDoesNotContainImage","`%s'",image->filename);
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return(bounds);
|
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}
|
||
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MagickExport RectangleInfo GetImageBoundingBox(const Image *image,
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ExceptionInfo *exception)
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{
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||
CacheView
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*image_view;
|
||
|
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const char
|
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*artifact;
|
||
|
||
MagickBooleanType
|
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status;
|
||
|
||
MagickPixelPacket
|
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target[3],
|
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zero;
|
||
|
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RectangleInfo
|
||
bounds;
|
||
|
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const PixelPacket
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||
*p;
|
||
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ssize_t
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y;
|
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|
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assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
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if (image->debug != MagickFalse)
|
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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artifact=GetImageArtifact(image,"trim:percent-background");
|
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if (artifact != (const char *) NULL)
|
||
return(GetEdgeBoundingBox(image,exception));
|
||
bounds.width=0;
|
||
bounds.height=0;
|
||
bounds.x=(ssize_t) image->columns;
|
||
bounds.y=(ssize_t) image->rows;
|
||
GetMagickPixelPacket(image,&target[0]);
|
||
image_view=AcquireVirtualCacheView(image,exception);
|
||
p=GetCacheViewVirtualPixels(image_view,0,0,1,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
{
|
||
image_view=DestroyCacheView(image_view);
|
||
return(bounds);
|
||
}
|
||
SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
|
||
&target[0]);
|
||
GetMagickPixelPacket(image,&target[1]);
|
||
p=GetCacheViewVirtualPixels(image_view,(ssize_t) image->columns-1,0,1,1,
|
||
exception);
|
||
if (p != (const PixelPacket *) NULL)
|
||
SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
|
||
&target[1]);
|
||
GetMagickPixelPacket(image,&target[2]);
|
||
p=GetCacheViewVirtualPixels(image_view,0,(ssize_t) image->rows-1,1,1,
|
||
exception);
|
||
if (p != (const PixelPacket *) NULL)
|
||
SetMagickPixelPacket(image,p,GetCacheViewVirtualIndexQueue(image_view),
|
||
&target[2]);
|
||
status=MagickTrue;
|
||
GetMagickPixelPacket(image,&zero);
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->rows,1)
|
||
#endif
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
MagickPixelPacket
|
||
pixel;
|
||
|
||
RectangleInfo
|
||
bounding_box;
|
||
|
||
const IndexPacket
|
||
*magick_restrict indexes;
|
||
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
# pragma omp critical (MagickCore_GetImageBoundingBox)
|
||
#endif
|
||
bounding_box=bounds;
|
||
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
{
|
||
status=MagickFalse;
|
||
continue;
|
||
}
|
||
indexes=GetCacheViewVirtualIndexQueue(image_view);
|
||
pixel=zero;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetMagickPixelPacket(image,p,indexes+x,&pixel);
|
||
if ((x < bounding_box.x) &&
|
||
(IsMagickColorSimilar(&pixel,&target[0]) == MagickFalse))
|
||
bounding_box.x=x;
|
||
if ((x > (ssize_t) bounding_box.width) &&
|
||
(IsMagickColorSimilar(&pixel,&target[1]) == MagickFalse))
|
||
bounding_box.width=(size_t) x;
|
||
if ((y < bounding_box.y) &&
|
||
(IsMagickColorSimilar(&pixel,&target[0]) == MagickFalse))
|
||
bounding_box.y=y;
|
||
if ((y > (ssize_t) bounding_box.height) &&
|
||
(IsMagickColorSimilar(&pixel,&target[2]) == MagickFalse))
|
||
bounding_box.height=(size_t) y;
|
||
p++;
|
||
}
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
# pragma omp critical (MagickCore_GetImageBoundingBox)
|
||
#endif
|
||
{
|
||
if (bounding_box.x < bounds.x)
|
||
bounds.x=bounding_box.x;
|
||
if (bounding_box.y < bounds.y)
|
||
bounds.y=bounding_box.y;
|
||
if (bounding_box.width > bounds.width)
|
||
bounds.width=bounding_box.width;
|
||
if (bounding_box.height > bounds.height)
|
||
bounds.height=bounding_box.height;
|
||
}
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
if ((bounds.width == 0) || (bounds.height == 0))
|
||
(void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
|
||
"GeometryDoesNotContainImage","`%s'",image->filename);
|
||
else
|
||
{
|
||
bounds.width-=(bounds.x-1);
|
||
bounds.height-=(bounds.y-1);
|
||
}
|
||
return(bounds);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t I m a g e C h a n n e l D e p t h %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetImageChannelDepth() returns the depth of a particular image channel.
|
||
%
|
||
% The format of the GetImageChannelDepth method is:
|
||
%
|
||
% size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
|
||
% size_t GetImageChannelDepth(const Image *image,
|
||
% const ChannelType channel,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o channel: the channel.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
MagickExport size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
|
||
{
|
||
return(GetImageChannelDepth(image,CompositeChannels,exception));
|
||
}
|
||
|
||
MagickExport size_t GetImageChannelDepth(const Image *image,
|
||
const ChannelType channel,ExceptionInfo *exception)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
size_t
|
||
*current_depth,
|
||
depth,
|
||
number_threads;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
/*
|
||
Compute image depth.
|
||
*/
|
||
assert(image != (Image *) NULL);
|
||
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
|
||
current_depth=(size_t *) AcquireQuantumMemory(number_threads,
|
||
sizeof(*current_depth));
|
||
if (current_depth == (size_t *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
|
||
status=MagickTrue;
|
||
for (i=0; i < (ssize_t) number_threads; i++)
|
||
current_depth[i]=1;
|
||
if ((image->storage_class == PseudoClass) && (image->matte == MagickFalse))
|
||
{
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->colors,1)
|
||
#endif
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
{
|
||
const int
|
||
id = GetOpenMPThreadId();
|
||
|
||
while (current_depth[id] < MAGICKCORE_QUANTUM_DEPTH)
|
||
{
|
||
MagickBooleanType
|
||
atDepth;
|
||
|
||
QuantumAny
|
||
range;
|
||
|
||
atDepth=MagickTrue;
|
||
range=GetQuantumRange(current_depth[id]);
|
||
if ((channel & RedChannel) != 0)
|
||
if (IsPixelAtDepth(image->colormap[i].red,range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse) && ((channel & GreenChannel) != 0))
|
||
if (IsPixelAtDepth(image->colormap[i].green,range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse) && ((channel & BlueChannel) != 0))
|
||
if (IsPixelAtDepth(image->colormap[i].blue,range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse))
|
||
break;
|
||
current_depth[id]++;
|
||
}
|
||
}
|
||
depth=current_depth[0];
|
||
for (i=1; i < (ssize_t) number_threads; i++)
|
||
if (depth < current_depth[i])
|
||
depth=current_depth[i];
|
||
current_depth=(size_t *) RelinquishMagickMemory(current_depth);
|
||
return(depth);
|
||
}
|
||
image_view=AcquireVirtualCacheView(image,exception);
|
||
#if !defined(MAGICKCORE_HDRI_SUPPORT)
|
||
DisableMSCWarning(4127)
|
||
if (1UL*QuantumRange <= MaxMap)
|
||
RestoreMSCWarning
|
||
{
|
||
size_t
|
||
*depth_map;
|
||
|
||
/*
|
||
Scale pixels to desired (optimized with depth map).
|
||
*/
|
||
depth_map=(size_t *) AcquireQuantumMemory(MaxMap+1,sizeof(*depth_map));
|
||
if (depth_map == (size_t *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
|
||
for (i=0; i <= (ssize_t) MaxMap; i++)
|
||
{
|
||
unsigned int
|
||
depth;
|
||
|
||
for (depth=1; depth < MAGICKCORE_QUANTUM_DEPTH; depth++)
|
||
{
|
||
Quantum
|
||
pixel;
|
||
|
||
QuantumAny
|
||
range;
|
||
|
||
range=GetQuantumRange(depth);
|
||
pixel=(Quantum) i;
|
||
if (pixel == ScaleAnyToQuantum(ScaleQuantumToAny(pixel,range),range))
|
||
break;
|
||
}
|
||
depth_map[i]=depth;
|
||
}
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->rows,1)
|
||
#endif
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const int
|
||
id = GetOpenMPThreadId();
|
||
|
||
const IndexPacket
|
||
*magick_restrict indexes;
|
||
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
continue;
|
||
indexes=GetCacheViewVirtualIndexQueue(image_view);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
Quantum
|
||
pixel;
|
||
|
||
if ((channel & RedChannel) != 0)
|
||
{
|
||
pixel=GetPixelRed(p);
|
||
if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
|
||
current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
|
||
}
|
||
if ((channel & GreenChannel) != 0)
|
||
{
|
||
pixel=GetPixelGreen(p);
|
||
if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
|
||
current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
|
||
}
|
||
if ((channel & BlueChannel) != 0)
|
||
{
|
||
pixel=GetPixelBlue(p);
|
||
if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
|
||
current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
|
||
}
|
||
if (((channel & OpacityChannel) != 0) &&
|
||
(image->matte != MagickFalse))
|
||
{
|
||
pixel=GetPixelOpacity(p);
|
||
if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
|
||
current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
|
||
}
|
||
if (((channel & IndexChannel) != 0) &&
|
||
(image->colorspace == CMYKColorspace))
|
||
{
|
||
pixel=GetPixelIndex(indexes+x);
|
||
if (depth_map[ScaleQuantumToMap(pixel)] > current_depth[id])
|
||
current_depth[id]=depth_map[ScaleQuantumToMap(pixel)];
|
||
}
|
||
p++;
|
||
}
|
||
if (current_depth[id] == MAGICKCORE_QUANTUM_DEPTH)
|
||
status=MagickFalse;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
depth=current_depth[0];
|
||
for (i=1; i < (ssize_t) number_threads; i++)
|
||
if (depth < current_depth[i])
|
||
depth=current_depth[i];
|
||
depth_map=(size_t *) RelinquishMagickMemory(depth_map);
|
||
current_depth=(size_t *) RelinquishMagickMemory(current_depth);
|
||
return(depth);
|
||
}
|
||
#endif
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->rows,1)
|
||
#endif
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const int
|
||
id = GetOpenMPThreadId();
|
||
|
||
const IndexPacket
|
||
*magick_restrict indexes;
|
||
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
continue;
|
||
indexes=GetCacheViewVirtualIndexQueue(image_view);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
while (current_depth[id] < MAGICKCORE_QUANTUM_DEPTH)
|
||
{
|
||
MagickBooleanType
|
||
atDepth;
|
||
|
||
QuantumAny
|
||
range;
|
||
|
||
atDepth=MagickTrue;
|
||
range=GetQuantumRange(current_depth[id]);
|
||
if ((atDepth != MagickFalse) && ((channel & RedChannel) != 0))
|
||
if (IsPixelAtDepth(GetPixelRed(p),range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse) && ((channel & GreenChannel) != 0))
|
||
if (IsPixelAtDepth(GetPixelGreen(p),range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse) && ((channel & BlueChannel) != 0))
|
||
if (IsPixelAtDepth(GetPixelBlue(p),range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse) && ((channel & OpacityChannel) != 0) &&
|
||
(image->matte != MagickFalse))
|
||
if (IsPixelAtDepth(GetPixelOpacity(p),range) == MagickFalse)
|
||
atDepth=MagickTrue;
|
||
if ((atDepth != MagickFalse) && ((channel & IndexChannel) != 0) &&
|
||
(image->colorspace == CMYKColorspace))
|
||
if (IsPixelAtDepth(GetPixelIndex(indexes+x),range) == MagickFalse)
|
||
atDepth=MagickFalse;
|
||
if ((atDepth != MagickFalse))
|
||
break;
|
||
current_depth[id]++;
|
||
}
|
||
p++;
|
||
}
|
||
if (current_depth[id] == MAGICKCORE_QUANTUM_DEPTH)
|
||
status=MagickFalse;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
depth=current_depth[0];
|
||
for (i=1; i < (ssize_t) number_threads; i++)
|
||
if (depth < current_depth[i])
|
||
depth=current_depth[i];
|
||
current_depth=(size_t *) RelinquishMagickMemory(current_depth);
|
||
return(depth);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t I m a g e Q u a n t u m D e p t h %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetImageQuantumDepth() returns the depth of the image rounded to a legal
|
||
% quantum depth: 8, 16, or 32.
|
||
%
|
||
% The format of the GetImageQuantumDepth method is:
|
||
%
|
||
% size_t GetImageQuantumDepth(const Image *image,
|
||
% const MagickBooleanType constrain)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o constrain: A value other than MagickFalse, constrains the depth to
|
||
% a maximum of MAGICKCORE_QUANTUM_DEPTH.
|
||
%
|
||
*/
|
||
MagickExport size_t GetImageQuantumDepth(const Image *image,
|
||
const MagickBooleanType constrain)
|
||
{
|
||
size_t
|
||
depth;
|
||
|
||
depth=image->depth;
|
||
if (depth <= 8)
|
||
depth=8;
|
||
else
|
||
if (depth <= 16)
|
||
depth=16;
|
||
else
|
||
if (depth <= 32)
|
||
depth=32;
|
||
else
|
||
if (depth <= 64)
|
||
depth=64;
|
||
if (constrain != MagickFalse)
|
||
depth=(size_t) MagickMin((double) depth,(double) MAGICKCORE_QUANTUM_DEPTH);
|
||
return(depth);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t I m a g e T y p e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% 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 == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
if (image->colorspace == CMYKColorspace)
|
||
{
|
||
if (image->matte == MagickFalse)
|
||
return(ColorSeparationType);
|
||
return(ColorSeparationMatteType);
|
||
}
|
||
if (IsMonochromeImage(image,exception) != MagickFalse)
|
||
return(BilevelType);
|
||
if (IsGrayImage(image,exception) != MagickFalse)
|
||
{
|
||
if (image->matte != MagickFalse)
|
||
return(GrayscaleMatteType);
|
||
return(GrayscaleType);
|
||
}
|
||
if (IsPaletteImage(image,exception) != MagickFalse)
|
||
{
|
||
if (image->matte != MagickFalse)
|
||
return(PaletteMatteType);
|
||
return(PaletteType);
|
||
}
|
||
if (image->matte != MagickFalse)
|
||
return(TrueColorMatteType);
|
||
return(TrueColorType);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I d e n t i f y I m a g e G r a y %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% either 0 or QuantumRange. Otherwise undefined is returned.
|
||
%
|
||
% The format of the IdentifyImageGray method is:
|
||
%
|
||
% ImageType IdentifyImageGray(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 IdentifyImageGray(const Image *image,
|
||
ExceptionInfo *exception)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
ImageType
|
||
type;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
if ((image->type == BilevelType) || (image->type == GrayscaleType) ||
|
||
(image->type == GrayscaleMatteType))
|
||
return(image->type);
|
||
if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
|
||
return(UndefinedType);
|
||
type=BilevelType;
|
||
image_view=AcquireVirtualCacheView(image,exception);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if (IsPixelGray(p) == MagickFalse)
|
||
{
|
||
type=UndefinedType;
|
||
break;
|
||
}
|
||
if ((type == BilevelType) && (IsPixelMonochrome(p) == MagickFalse))
|
||
type=GrayscaleType;
|
||
p++;
|
||
}
|
||
if (type == UndefinedType)
|
||
break;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
if ((type == GrayscaleType) && (image->matte != MagickFalse))
|
||
type=GrayscaleMatteType;
|
||
return(type);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I d e n t i f y I m a g e M o n o c h r o m e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IdentifyImageMonochrome() returns MagickTrue if all the pixels in the image
|
||
% have the same red, green, and blue intensities and the intensity is either
|
||
% 0 or QuantumRange.
|
||
%
|
||
% The format of the IdentifyImageMonochrome method is:
|
||
%
|
||
% MagickBooleanType IdentifyImageMonochrome(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 MagickBooleanType IdentifyImageMonochrome(const Image *image,
|
||
ExceptionInfo *exception)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
ImageType
|
||
type;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
if (image->type == BilevelType)
|
||
return(MagickTrue);
|
||
if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
|
||
return(MagickFalse);
|
||
type=BilevelType;
|
||
image_view=AcquireVirtualCacheView(image,exception);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if (IsPixelMonochrome(p) == MagickFalse)
|
||
{
|
||
type=UndefinedType;
|
||
break;
|
||
}
|
||
p++;
|
||
}
|
||
if (type == UndefinedType)
|
||
break;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
if (type == BilevelType)
|
||
return(MagickTrue);
|
||
return(MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I d e n t i f y I m a g e T y p e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IdentifyImageType() 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,IdentifyImageType(image,exception),exception);
|
||
%
|
||
% The format of the IdentifyImageType method is:
|
||
%
|
||
% ImageType IdentifyImageType(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 IdentifyImageType(const Image *image,
|
||
ExceptionInfo *exception)
|
||
{
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
if (image->colorspace == CMYKColorspace)
|
||
{
|
||
if (image->matte == MagickFalse)
|
||
return(ColorSeparationType);
|
||
return(ColorSeparationMatteType);
|
||
}
|
||
if (IdentifyImageMonochrome(image,exception) != MagickFalse)
|
||
return(BilevelType);
|
||
if (IdentifyImageGray(image,exception) != UndefinedType)
|
||
{
|
||
if (image->matte != MagickFalse)
|
||
return(GrayscaleMatteType);
|
||
return(GrayscaleType);
|
||
}
|
||
if (IdentifyPaletteImage(image,exception) != MagickFalse)
|
||
{
|
||
if (image->matte != MagickFalse)
|
||
return(PaletteMatteType);
|
||
return(PaletteType);
|
||
}
|
||
if (image->matte != MagickFalse)
|
||
return(TrueColorMatteType);
|
||
return(TrueColorType);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I s G r a y I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IsGrayImage() returns MagickTrue if the type of the image is grayscale or
|
||
% bi-level.
|
||
%
|
||
% The format of the IsGrayImage method is:
|
||
%
|
||
% MagickBooleanType IsGrayImage(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 MagickBooleanType IsGrayImage(const Image *image,
|
||
ExceptionInfo *exception)
|
||
{
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
magick_unreferenced(exception);
|
||
if ((image->type == BilevelType) || (image->type == GrayscaleType) ||
|
||
(image->type == GrayscaleMatteType))
|
||
return(MagickTrue);
|
||
return(MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I s M o n o c h r o m e I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IsMonochromeImage() returns MagickTrue if type of the image is bi-level.
|
||
%
|
||
% The format of the IsMonochromeImage method is:
|
||
%
|
||
% MagickBooleanType IsMonochromeImage(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 MagickBooleanType IsMonochromeImage(const Image *image,
|
||
ExceptionInfo *exception)
|
||
{
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
magick_unreferenced(exception);
|
||
if (image->type == BilevelType)
|
||
return(MagickTrue);
|
||
return(MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I s O p a q u e I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IsOpaqueImage() returns MagickTrue if none of the pixels in the image have
|
||
% an opacity value other than opaque (0).
|
||
%
|
||
% The format of the IsOpaqueImage method is:
|
||
%
|
||
% MagickBooleanType IsOpaqueImage(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 MagickBooleanType IsOpaqueImage(const Image *image,
|
||
ExceptionInfo *exception)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
/*
|
||
Determine if image is opaque.
|
||
*/
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
if (image->matte == MagickFalse)
|
||
return(MagickTrue);
|
||
image_view=AcquireVirtualCacheView(image,exception);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if (GetPixelOpacity(p) != OpaqueOpacity)
|
||
break;
|
||
p++;
|
||
}
|
||
if (x < (ssize_t) image->columns)
|
||
break;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
return(y < (ssize_t) image->rows ? MagickFalse : MagickTrue);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% S e t I m a g e C h a n n e l D e p t h %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% SetImageChannelDepth() sets the depth of the image.
|
||
%
|
||
% The format of the SetImageChannelDepth method is:
|
||
%
|
||
% MagickBooleanType SetImageDepth(Image *image,const size_t depth)
|
||
% MagickBooleanType SetImageChannelDepth(Image *image,
|
||
% const ChannelType channel,const size_t depth)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o channel: the channel.
|
||
%
|
||
% o depth: the image depth.
|
||
%
|
||
*/
|
||
|
||
MagickExport MagickBooleanType SetImageDepth(Image *image,
|
||
const size_t depth)
|
||
{
|
||
return(SetImageChannelDepth(image,CompositeChannels,depth));
|
||
}
|
||
|
||
MagickExport MagickBooleanType SetImageChannelDepth(Image *image,
|
||
const ChannelType channel,const size_t depth)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
ExceptionInfo
|
||
*exception;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
QuantumAny
|
||
range;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
assert(image != (Image *) NULL);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (depth >= MAGICKCORE_QUANTUM_DEPTH)
|
||
{
|
||
image->depth=depth;
|
||
return(MagickTrue);
|
||
}
|
||
range=GetQuantumRange(depth);
|
||
if (image->storage_class == PseudoClass)
|
||
{
|
||
ssize_t
|
||
i;
|
||
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->rows,1)
|
||
#endif
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
{
|
||
if ((channel & RedChannel) != 0)
|
||
image->colormap[i].red=ScaleAnyToQuantum(ScaleQuantumToAny(
|
||
ClampPixel((MagickRealType) image->colormap[i].red),range),range);
|
||
if ((channel & GreenChannel) != 0)
|
||
image->colormap[i].green=ScaleAnyToQuantum(ScaleQuantumToAny(
|
||
ClampPixel((MagickRealType) image->colormap[i].green),range),range);
|
||
if ((channel & BlueChannel) != 0)
|
||
image->colormap[i].blue=ScaleAnyToQuantum(ScaleQuantumToAny(
|
||
ClampPixel((MagickRealType) image->colormap[i].blue),range),range);
|
||
if ((channel & OpacityChannel) != 0)
|
||
image->colormap[i].opacity=ScaleAnyToQuantum(ScaleQuantumToAny(
|
||
ClampPixel((MagickRealType) image->colormap[i].opacity),range),
|
||
range);
|
||
}
|
||
}
|
||
status=MagickTrue;
|
||
exception=(&image->exception);
|
||
image_view=AcquireAuthenticCacheView(image,exception);
|
||
#if !defined(MAGICKCORE_HDRI_SUPPORT)
|
||
DisableMSCWarning(4127)
|
||
if (1UL*QuantumRange <= MaxMap)
|
||
RestoreMSCWarning
|
||
{
|
||
Quantum
|
||
*depth_map;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
/*
|
||
Scale pixels to desired (optimized with depth map).
|
||
*/
|
||
depth_map=(Quantum *) AcquireQuantumMemory(MaxMap+1,sizeof(*depth_map));
|
||
if (depth_map == (Quantum *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
|
||
for (i=0; i <= (ssize_t) MaxMap; i++)
|
||
depth_map[i]=ScaleAnyToQuantum(ScaleQuantumToAny((Quantum) i,range),
|
||
range);
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->rows,1)
|
||
#endif
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
|
||
exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
{
|
||
status=MagickFalse;
|
||
continue;
|
||
}
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if ((channel & RedChannel) != 0)
|
||
SetPixelRed(q,depth_map[ScaleQuantumToMap(GetPixelRed(q))]);
|
||
if ((channel & GreenChannel) != 0)
|
||
SetPixelGreen(q,depth_map[ScaleQuantumToMap(GetPixelGreen(q))]);
|
||
if ((channel & BlueChannel) != 0)
|
||
SetPixelBlue(q,depth_map[ScaleQuantumToMap(GetPixelBlue(q))]);
|
||
if (((channel & OpacityChannel) != 0) &&
|
||
(image->matte != MagickFalse))
|
||
SetPixelOpacity(q,depth_map[ScaleQuantumToMap(GetPixelOpacity(q))]);
|
||
q++;
|
||
}
|
||
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
|
||
{
|
||
status=MagickFalse;
|
||
continue;
|
||
}
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
depth_map=(Quantum *) RelinquishMagickMemory(depth_map);
|
||
if (status != MagickFalse)
|
||
image->depth=depth;
|
||
return(status);
|
||
}
|
||
#endif
|
||
/*
|
||
Scale pixels to desired depth.
|
||
*/
|
||
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
||
#pragma omp parallel for schedule(static) shared(status) \
|
||
magick_number_threads(image,image,image->rows,1)
|
||
#endif
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
{
|
||
status=MagickFalse;
|
||
continue;
|
||
}
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if ((channel & RedChannel) != 0)
|
||
SetPixelRed(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
|
||
(MagickRealType) GetPixelRed(q)),range),range));
|
||
if ((channel & GreenChannel) != 0)
|
||
SetPixelGreen(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
|
||
(MagickRealType) GetPixelGreen(q)),range),range));
|
||
if ((channel & BlueChannel) != 0)
|
||
SetPixelBlue(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
|
||
(MagickRealType) GetPixelBlue(q)),range),range));
|
||
if (((channel & OpacityChannel) != 0) && (image->matte != MagickFalse))
|
||
SetPixelOpacity(q,ScaleAnyToQuantum(ScaleQuantumToAny(ClampPixel(
|
||
(MagickRealType) GetPixelOpacity(q)),range),range));
|
||
q++;
|
||
}
|
||
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
|
||
{
|
||
status=MagickFalse;
|
||
continue;
|
||
}
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
if (status != MagickFalse)
|
||
image->depth=depth;
|
||
return(status);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% S e t I m a g e T y p e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% SetImageType() sets the type of image. Choose from these types:
|
||
%
|
||
% BilevelType, GrayscaleType, GrayscaleMatteType, PaletteType,
|
||
% PaletteMatteType, TrueColorType, TrueColorMatteType,
|
||
% ColorSeparationType, ColorSeparationMatteType, OptimizeType
|
||
%
|
||
% The format of the SetImageType method is:
|
||
%
|
||
% MagickBooleanType SetImageType(Image *image,const ImageType type)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o type: Image type.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType SetImageType(Image *image,const ImageType type)
|
||
{
|
||
const char
|
||
*artifact;
|
||
|
||
ImageInfo
|
||
*image_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
QuantizeInfo
|
||
*quantize_info;
|
||
|
||
assert(image != (Image *) NULL);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
|
||
assert(image->signature == MagickCoreSignature);
|
||
status=MagickTrue;
|
||
image_info=AcquireImageInfo();
|
||
image_info->dither=image->dither;
|
||
artifact=GetImageArtifact(image,"dither");
|
||
if (artifact != (const char *) NULL)
|
||
(void) SetImageOption(image_info,"dither",artifact);
|
||
switch (type)
|
||
{
|
||
case BilevelType:
|
||
{
|
||
status=TransformImageColorspace(image,GRAYColorspace);
|
||
(void) NormalizeImage(image);
|
||
quantize_info=AcquireQuantizeInfo(image_info);
|
||
quantize_info->number_colors=2;
|
||
quantize_info->colorspace=GRAYColorspace;
|
||
status=QuantizeImage(quantize_info,image);
|
||
quantize_info=DestroyQuantizeInfo(quantize_info);
|
||
image->matte=MagickFalse;
|
||
break;
|
||
}
|
||
case GrayscaleType:
|
||
{
|
||
status=TransformImageColorspace(image,GRAYColorspace);
|
||
image->matte=MagickFalse;
|
||
break;
|
||
}
|
||
case GrayscaleMatteType:
|
||
{
|
||
status=TransformImageColorspace(image,GRAYColorspace);
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
break;
|
||
}
|
||
case PaletteType:
|
||
{
|
||
status=TransformImageColorspace(image,sRGBColorspace);
|
||
if ((image->storage_class == DirectClass) || (image->colors > 256))
|
||
{
|
||
quantize_info=AcquireQuantizeInfo(image_info);
|
||
quantize_info->number_colors=256;
|
||
status=QuantizeImage(quantize_info,image);
|
||
quantize_info=DestroyQuantizeInfo(quantize_info);
|
||
}
|
||
image->matte=MagickFalse;
|
||
break;
|
||
}
|
||
case PaletteBilevelMatteType:
|
||
{
|
||
status=TransformImageColorspace(image,sRGBColorspace);
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
(void) BilevelImageChannel(image,AlphaChannel,(double) QuantumRange/2.0);
|
||
quantize_info=AcquireQuantizeInfo(image_info);
|
||
status=QuantizeImage(quantize_info,image);
|
||
quantize_info=DestroyQuantizeInfo(quantize_info);
|
||
break;
|
||
}
|
||
case PaletteMatteType:
|
||
{
|
||
status=TransformImageColorspace(image,sRGBColorspace);
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
quantize_info=AcquireQuantizeInfo(image_info);
|
||
quantize_info->colorspace=TransparentColorspace;
|
||
status=QuantizeImage(quantize_info,image);
|
||
quantize_info=DestroyQuantizeInfo(quantize_info);
|
||
break;
|
||
}
|
||
case TrueColorType:
|
||
{
|
||
status=TransformImageColorspace(image,sRGBColorspace);
|
||
if (image->storage_class != DirectClass)
|
||
status=SetImageStorageClass(image,DirectClass);
|
||
image->matte=MagickFalse;
|
||
break;
|
||
}
|
||
case TrueColorMatteType:
|
||
{
|
||
status=TransformImageColorspace(image,sRGBColorspace);
|
||
if (image->storage_class != DirectClass)
|
||
status=SetImageStorageClass(image,DirectClass);
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
break;
|
||
}
|
||
case ColorSeparationType:
|
||
{
|
||
status=TransformImageColorspace(image,CMYKColorspace);
|
||
if (image->storage_class != DirectClass)
|
||
status=SetImageStorageClass(image,DirectClass);
|
||
image->matte=MagickFalse;
|
||
break;
|
||
}
|
||
case ColorSeparationMatteType:
|
||
{
|
||
status=TransformImageColorspace(image,CMYKColorspace);
|
||
if (image->storage_class != DirectClass)
|
||
status=SetImageStorageClass(image,DirectClass);
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
break;
|
||
}
|
||
case OptimizeType:
|
||
case UndefinedType:
|
||
break;
|
||
}
|
||
image_info=DestroyImageInfo(image_info);
|
||
if (status == MagickFalse)
|
||
return(MagickFalse);
|
||
image->type=type;
|
||
return(MagickTrue);
|
||
}
|