forked from openkylin/imagemagick
1277 lines
45 KiB
C
1277 lines
45 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% V V IIIII FFFFF FFFFF %
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% V V I F F %
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% V V I FFF FFF %
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% V V I F F %
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% V IIIII F F %
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% %
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% %
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% Read/Write Khoros Visualization Image Format %
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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 "magick/studio.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/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/exception.h"
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#include "magick/exception-private.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/magick.h"
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#include "magick/memory_.h"
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#include "magick/memory-private.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/pixel-accessor.h"
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#include "magick/property.h"
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#include "magick/quantum-private.h"
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#include "magick/static.h"
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#include "magick/string_.h"
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#include "magick/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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WriteVIFFImage(const ImageInfo *,Image *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% I s V I F F %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsVIFF() returns MagickTrue if the image format type, identified by the
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% magick string, is VIFF.
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%
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% The format of the IsVIFF method is:
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%
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% MagickBooleanType IsVIFF(const unsigned char *magick,const size_t length)
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%
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% A description of each parameter follows:
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%
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% o magick: compare image format pattern against these bytes.
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%
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% o length: Specifies the length of the magick string.
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%
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*/
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static MagickBooleanType IsVIFF(const unsigned char *magick,const size_t length)
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{
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if (length < 2)
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return(MagickFalse);
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if (memcmp(magick,"\253\001",2) == 0)
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return(MagickTrue);
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return(MagickFalse);
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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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% R e a d V I F F 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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% ReadVIFFImage() reads a Khoros Visualization image file and returns
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% it. It allocates the memory necessary for the new Image structure and
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% returns a pointer to the new image.
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%
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% The format of the ReadVIFFImage method is:
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%
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% Image *ReadVIFFImage(const ImageInfo *image_info,
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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 image: Method ReadVIFFImage returns a pointer to the image after
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% reading. A null image is returned if there is a memory shortage or if
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% the image cannot be read.
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%
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% o image_info: the image info.
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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 Image *ReadVIFFImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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#define VFF_CM_genericRGB 15
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#define VFF_CM_ntscRGB 1
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#define VFF_CM_NONE 0
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#define VFF_DEP_DECORDER 0x4
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#define VFF_DEP_NSORDER 0x8
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#define VFF_DES_RAW 0
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#define VFF_LOC_IMPLICIT 1
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#define VFF_MAPTYP_NONE 0
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#define VFF_MAPTYP_1_BYTE 1
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#define VFF_MAPTYP_2_BYTE 2
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#define VFF_MAPTYP_4_BYTE 4
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#define VFF_MAPTYP_FLOAT 5
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#define VFF_MAPTYP_DOUBLE 7
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#define VFF_MS_NONE 0
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#define VFF_MS_ONEPERBAND 1
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#define VFF_MS_SHARED 3
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#define VFF_TYP_BIT 0
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#define VFF_TYP_1_BYTE 1
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#define VFF_TYP_2_BYTE 2
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#define VFF_TYP_4_BYTE 4
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#define VFF_TYP_FLOAT 5
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#define VFF_TYP_DOUBLE 9
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typedef struct _ViffInfo
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{
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unsigned char
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identifier,
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file_type,
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release,
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version,
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machine_dependency,
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reserve[3];
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char
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comment[512];
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unsigned int
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rows,
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columns,
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subrows;
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int
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x_offset,
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y_offset;
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float
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x_bits_per_pixel,
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y_bits_per_pixel;
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unsigned int
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location_type,
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location_dimension,
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number_of_images,
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number_data_bands,
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data_storage_type,
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data_encode_scheme,
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map_scheme,
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map_storage_type,
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map_rows,
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map_columns,
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map_subrows,
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map_enable,
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maps_per_cycle,
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color_space_model;
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} ViffInfo;
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double
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min_value,
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scale_factor,
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value;
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Image
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*image;
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int
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bit;
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MagickBooleanType
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status;
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MagickSizeType
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number_pixels;
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IndexPacket
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*indexes;
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ssize_t
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x;
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PixelPacket
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*q;
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ssize_t
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i;
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unsigned char
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*p;
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size_t
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bytes_per_pixel,
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max_packets,
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quantum;
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ssize_t
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count,
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y;
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unsigned char
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*pixels;
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unsigned long
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lsb_first;
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ViffInfo
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viff_info;
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/*
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Open image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickCoreSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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image=AcquireImage(image_info);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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/*
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Read VIFF header (1024 bytes).
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*/
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count=ReadBlob(image,1,&viff_info.identifier);
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do
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{
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/*
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Verify VIFF identifier.
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*/
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if ((count != 1) || ((unsigned char) viff_info.identifier != 0xab))
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ThrowReaderException(CorruptImageError,"NotAVIFFImage");
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/*
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Initialize VIFF image.
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*/
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(void) ReadBlob(image,sizeof(viff_info.file_type),&viff_info.file_type);
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(void) ReadBlob(image,sizeof(viff_info.release),&viff_info.release);
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(void) ReadBlob(image,sizeof(viff_info.version),&viff_info.version);
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(void) ReadBlob(image,sizeof(viff_info.machine_dependency),
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&viff_info.machine_dependency);
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(void) ReadBlob(image,sizeof(viff_info.reserve),viff_info.reserve);
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count=ReadBlob(image,512,(unsigned char *) viff_info.comment);
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if (count != 512)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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viff_info.comment[511]='\0';
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if (strlen(viff_info.comment) > 4)
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(void) SetImageProperty(image,"comment",viff_info.comment);
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if ((viff_info.machine_dependency == VFF_DEP_DECORDER) ||
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(viff_info.machine_dependency == VFF_DEP_NSORDER))
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image->endian=LSBEndian;
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else
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image->endian=MSBEndian;
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viff_info.rows=ReadBlobLong(image);
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viff_info.columns=ReadBlobLong(image);
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viff_info.subrows=ReadBlobLong(image);
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viff_info.x_offset=ReadBlobSignedLong(image);
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viff_info.y_offset=ReadBlobSignedLong(image);
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viff_info.x_bits_per_pixel=(float) ReadBlobLong(image);
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viff_info.y_bits_per_pixel=(float) ReadBlobLong(image);
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viff_info.location_type=ReadBlobLong(image);
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viff_info.location_dimension=ReadBlobLong(image);
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viff_info.number_of_images=ReadBlobLong(image);
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viff_info.number_data_bands=ReadBlobLong(image);
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viff_info.data_storage_type=ReadBlobLong(image);
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viff_info.data_encode_scheme=ReadBlobLong(image);
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viff_info.map_scheme=ReadBlobLong(image);
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viff_info.map_storage_type=ReadBlobLong(image);
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viff_info.map_rows=ReadBlobLong(image);
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viff_info.map_columns=ReadBlobLong(image);
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viff_info.map_subrows=ReadBlobLong(image);
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viff_info.map_enable=ReadBlobLong(image);
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viff_info.maps_per_cycle=ReadBlobLong(image);
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viff_info.color_space_model=ReadBlobLong(image);
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for (i=0; i < 420; i++)
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(void) ReadBlobByte(image);
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if (EOFBlob(image) != MagickFalse)
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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number_pixels=(MagickSizeType) viff_info.columns*viff_info.rows;
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if (number_pixels != (size_t) number_pixels)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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if (number_pixels > GetBlobSize(image))
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ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
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if (number_pixels == 0)
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ThrowReaderException(CoderError,"ImageColumnOrRowSizeIsNotSupported");
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image->columns=viff_info.rows;
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image->rows=viff_info.columns;
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image->depth=viff_info.x_bits_per_pixel <= 8 ? 8UL :
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MAGICKCORE_QUANTUM_DEPTH;
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image->matte=viff_info.number_data_bands == 4 ? MagickTrue : MagickFalse;
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status=SetImageExtent(image,image->columns,image->rows);
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if (status == MagickFalse)
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{
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InheritException(exception,&image->exception);
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return(DestroyImageList(image));
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}
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(void) SetImageBackgroundColor(image);
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/*
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Verify that we can read this VIFF image.
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*/
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if ((viff_info.number_data_bands < 1) || (viff_info.number_data_bands > 4))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if ((viff_info.data_storage_type != VFF_TYP_BIT) &&
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(viff_info.data_storage_type != VFF_TYP_1_BYTE) &&
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(viff_info.data_storage_type != VFF_TYP_2_BYTE) &&
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(viff_info.data_storage_type != VFF_TYP_4_BYTE) &&
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(viff_info.data_storage_type != VFF_TYP_FLOAT) &&
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(viff_info.data_storage_type != VFF_TYP_DOUBLE))
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ThrowReaderException(CoderError,"DataStorageTypeIsNotSupported");
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if (viff_info.data_encode_scheme != VFF_DES_RAW)
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ThrowReaderException(CoderError,"DataEncodingSchemeIsNotSupported");
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if ((viff_info.map_storage_type != VFF_MAPTYP_NONE) &&
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(viff_info.map_storage_type != VFF_MAPTYP_1_BYTE) &&
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(viff_info.map_storage_type != VFF_MAPTYP_2_BYTE) &&
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(viff_info.map_storage_type != VFF_MAPTYP_4_BYTE) &&
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(viff_info.map_storage_type != VFF_MAPTYP_FLOAT) &&
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(viff_info.map_storage_type != VFF_MAPTYP_DOUBLE))
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ThrowReaderException(CoderError,"MapStorageTypeIsNotSupported");
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if ((viff_info.color_space_model != VFF_CM_NONE) &&
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(viff_info.color_space_model != VFF_CM_ntscRGB) &&
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(viff_info.color_space_model != VFF_CM_genericRGB))
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ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported");
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if (viff_info.location_type != VFF_LOC_IMPLICIT)
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ThrowReaderException(CoderError,"LocationTypeIsNotSupported");
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if (viff_info.number_of_images != 1)
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ThrowReaderException(CoderError,"NumberOfImagesIsNotSupported");
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if (viff_info.map_rows == 0)
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viff_info.map_scheme=VFF_MS_NONE;
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switch ((int) viff_info.map_scheme)
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{
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case VFF_MS_NONE:
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{
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if (viff_info.number_data_bands < 3)
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{
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/*
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Create linear color ramp.
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*/
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if (viff_info.data_storage_type == VFF_TYP_BIT)
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image->colors=2;
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else
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if (viff_info.data_storage_type == VFF_MAPTYP_1_BYTE)
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image->colors=256UL;
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else
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image->colors=image->depth <= 8 ? 256UL : 65536UL;
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if (AcquireImageColormap(image,image->colors) == MagickFalse)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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break;
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}
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case VFF_MS_ONEPERBAND:
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case VFF_MS_SHARED:
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{
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unsigned char
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*viff_colormap;
|
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|
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/*
|
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Allocate VIFF colormap.
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*/
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||
switch ((int) viff_info.map_storage_type)
|
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{
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case VFF_MAPTYP_1_BYTE: bytes_per_pixel=1; break;
|
||
case VFF_MAPTYP_2_BYTE: bytes_per_pixel=2; break;
|
||
case VFF_MAPTYP_4_BYTE: bytes_per_pixel=4; break;
|
||
case VFF_MAPTYP_FLOAT: bytes_per_pixel=4; break;
|
||
case VFF_MAPTYP_DOUBLE: bytes_per_pixel=8; break;
|
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default: bytes_per_pixel=1; break;
|
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}
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image->colors=viff_info.map_columns;
|
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if ((MagickSizeType) (viff_info.map_rows*image->colors) > GetBlobSize(image))
|
||
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
|
||
if (AcquireImageColormap(image,image->colors) == MagickFalse)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
if ((MagickSizeType) viff_info.map_rows > GetBlobSize(image))
|
||
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
|
||
if ((MagickSizeType) viff_info.map_rows >
|
||
(viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap)))
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
|
||
viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap));
|
||
if (viff_colormap == (unsigned char *) NULL)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
/*
|
||
Read VIFF raster colormap.
|
||
*/
|
||
(void) ReadBlob(image,bytes_per_pixel*image->colors*viff_info.map_rows,
|
||
viff_colormap);
|
||
lsb_first=1;
|
||
if (*(char *) &lsb_first &&
|
||
((viff_info.machine_dependency != VFF_DEP_DECORDER) &&
|
||
(viff_info.machine_dependency != VFF_DEP_NSORDER)))
|
||
switch ((int) viff_info.map_storage_type)
|
||
{
|
||
case VFF_MAPTYP_2_BYTE:
|
||
{
|
||
MSBOrderShort(viff_colormap,(bytes_per_pixel*image->colors*
|
||
viff_info.map_rows));
|
||
break;
|
||
}
|
||
case VFF_MAPTYP_4_BYTE:
|
||
case VFF_MAPTYP_FLOAT:
|
||
{
|
||
MSBOrderLong(viff_colormap,(bytes_per_pixel*image->colors*
|
||
viff_info.map_rows));
|
||
break;
|
||
}
|
||
default: break;
|
||
}
|
||
for (i=0; i < (ssize_t) (viff_info.map_rows*image->colors); i++)
|
||
{
|
||
switch ((int) viff_info.map_storage_type)
|
||
{
|
||
case VFF_MAPTYP_2_BYTE: value=1.0*((short *) viff_colormap)[i]; break;
|
||
case VFF_MAPTYP_4_BYTE: value=1.0*((int *) viff_colormap)[i]; break;
|
||
case VFF_MAPTYP_FLOAT: value=((float *) viff_colormap)[i]; break;
|
||
case VFF_MAPTYP_DOUBLE: value=((double *) viff_colormap)[i]; break;
|
||
default: value=1.0*viff_colormap[i]; break;
|
||
}
|
||
if (i < (ssize_t) image->colors)
|
||
{
|
||
image->colormap[i].red=ScaleCharToQuantum((unsigned char) value);
|
||
image->colormap[i].green=ScaleCharToQuantum((unsigned char)
|
||
value);
|
||
image->colormap[i].blue=ScaleCharToQuantum((unsigned char) value);
|
||
}
|
||
else
|
||
if (i < (ssize_t) (2*image->colors))
|
||
image->colormap[i % image->colors].green=ScaleCharToQuantum(
|
||
(unsigned char) value);
|
||
else
|
||
if (i < (ssize_t) (3*image->colors))
|
||
image->colormap[i % image->colors].blue=ScaleCharToQuantum(
|
||
(unsigned char) value);
|
||
}
|
||
viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap);
|
||
break;
|
||
}
|
||
default:
|
||
ThrowReaderException(CoderError,"ColormapTypeNotSupported");
|
||
}
|
||
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
|
||
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
|
||
break;
|
||
if (viff_info.data_storage_type == VFF_TYP_BIT)
|
||
{
|
||
/*
|
||
Create bi-level colormap.
|
||
*/
|
||
image->colors=2;
|
||
if (AcquireImageColormap(image,image->colors) == MagickFalse)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
image->colorspace=GRAYColorspace;
|
||
}
|
||
/*
|
||
Allocate VIFF pixels.
|
||
*/
|
||
switch ((int) viff_info.data_storage_type)
|
||
{
|
||
case VFF_TYP_2_BYTE: bytes_per_pixel=2; break;
|
||
case VFF_TYP_4_BYTE: bytes_per_pixel=4; break;
|
||
case VFF_TYP_FLOAT: bytes_per_pixel=4; break;
|
||
case VFF_TYP_DOUBLE: bytes_per_pixel=8; break;
|
||
default: bytes_per_pixel=1; break;
|
||
}
|
||
if (viff_info.data_storage_type == VFF_TYP_BIT)
|
||
{
|
||
if (HeapOverflowSanityCheck((image->columns+7UL) >> 3UL,image->rows) != MagickFalse)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
max_packets=((image->columns+7UL) >> 3UL)*image->rows;
|
||
}
|
||
else
|
||
{
|
||
if (HeapOverflowSanityCheck((size_t) number_pixels,viff_info.number_data_bands) != MagickFalse)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
max_packets=(size_t) (number_pixels*viff_info.number_data_bands);
|
||
}
|
||
if ((MagickSizeType) (bytes_per_pixel*max_packets) > GetBlobSize(image))
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
pixels=(unsigned char *) AcquireQuantumMemory((size_t) MagickMax(
|
||
number_pixels,max_packets),bytes_per_pixel*sizeof(*pixels));
|
||
if (pixels == (unsigned char *) NULL)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
(void) memset(pixels,0,MagickMax(number_pixels,max_packets)*
|
||
bytes_per_pixel*sizeof(*pixels));
|
||
(void) ReadBlob(image,bytes_per_pixel*max_packets,pixels);
|
||
lsb_first=1;
|
||
if (*(char *) &lsb_first &&
|
||
((viff_info.machine_dependency != VFF_DEP_DECORDER) &&
|
||
(viff_info.machine_dependency != VFF_DEP_NSORDER)))
|
||
switch ((int) viff_info.data_storage_type)
|
||
{
|
||
case VFF_TYP_2_BYTE:
|
||
{
|
||
MSBOrderShort(pixels,bytes_per_pixel*max_packets);
|
||
break;
|
||
}
|
||
case VFF_TYP_4_BYTE:
|
||
case VFF_TYP_FLOAT:
|
||
{
|
||
MSBOrderLong(pixels,bytes_per_pixel*max_packets);
|
||
break;
|
||
}
|
||
default: break;
|
||
}
|
||
min_value=0.0;
|
||
scale_factor=1.0;
|
||
if ((viff_info.data_storage_type != VFF_TYP_1_BYTE) &&
|
||
(viff_info.map_scheme == VFF_MS_NONE))
|
||
{
|
||
double
|
||
max_value;
|
||
|
||
/*
|
||
Determine scale factor.
|
||
*/
|
||
switch ((int) viff_info.data_storage_type)
|
||
{
|
||
case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[0]; break;
|
||
case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[0]; break;
|
||
case VFF_TYP_FLOAT: value=((float *) pixels)[0]; break;
|
||
case VFF_TYP_DOUBLE: value=((double *) pixels)[0]; break;
|
||
default: value=1.0*pixels[0]; break;
|
||
}
|
||
max_value=value;
|
||
min_value=value;
|
||
for (i=0; i < (ssize_t) max_packets; i++)
|
||
{
|
||
switch ((int) viff_info.data_storage_type)
|
||
{
|
||
case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[i]; break;
|
||
case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[i]; break;
|
||
case VFF_TYP_FLOAT: value=((float *) pixels)[i]; break;
|
||
case VFF_TYP_DOUBLE: value=((double *) pixels)[i]; break;
|
||
default: value=1.0*pixels[i]; break;
|
||
}
|
||
if (value > max_value)
|
||
max_value=value;
|
||
else
|
||
if (value < min_value)
|
||
min_value=value;
|
||
}
|
||
if ((min_value == 0) && (max_value == 0))
|
||
scale_factor=0;
|
||
else
|
||
if (min_value == max_value)
|
||
{
|
||
scale_factor=(MagickRealType) QuantumRange/min_value;
|
||
min_value=0;
|
||
}
|
||
else
|
||
scale_factor=(MagickRealType) QuantumRange/(max_value-min_value);
|
||
}
|
||
/*
|
||
Convert pixels to Quantum size.
|
||
*/
|
||
p=(unsigned char *) pixels;
|
||
for (i=0; i < (ssize_t) max_packets; i++)
|
||
{
|
||
switch ((int) viff_info.data_storage_type)
|
||
{
|
||
case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[i]; break;
|
||
case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[i]; break;
|
||
case VFF_TYP_FLOAT: value=((float *) pixels)[i]; break;
|
||
case VFF_TYP_DOUBLE: value=((double *) pixels)[i]; break;
|
||
default: value=1.0*pixels[i]; break;
|
||
}
|
||
if (viff_info.map_scheme == VFF_MS_NONE)
|
||
{
|
||
value=(value-min_value)*scale_factor;
|
||
if (value > QuantumRange)
|
||
value=QuantumRange;
|
||
else
|
||
if (value < 0)
|
||
value=0;
|
||
}
|
||
*p=(unsigned char) ((Quantum) value);
|
||
p++;
|
||
}
|
||
/*
|
||
Convert VIFF raster image to pixel packets.
|
||
*/
|
||
p=(unsigned char *) pixels;
|
||
if (viff_info.data_storage_type == VFF_TYP_BIT)
|
||
{
|
||
/*
|
||
Convert bitmap scanline.
|
||
*/
|
||
if (image->storage_class != PseudoClass)
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetAuthenticIndexQueue(image);
|
||
for (x=0; x < (ssize_t) (image->columns-7); x+=8)
|
||
{
|
||
for (bit=0; bit < 8; bit++)
|
||
{
|
||
quantum=(size_t) ((*p) & (0x01 << bit) ? 0 : 1);
|
||
SetPixelRed(q,quantum == 0 ? 0 : QuantumRange);
|
||
SetPixelGreen(q,quantum == 0 ? 0 : QuantumRange);
|
||
SetPixelBlue(q,quantum == 0 ? 0 : QuantumRange);
|
||
if (image->storage_class == PseudoClass)
|
||
SetPixelIndex(indexes+x+bit,quantum);
|
||
}
|
||
p++;
|
||
}
|
||
if ((image->columns % 8) != 0)
|
||
{
|
||
for (bit=0; bit < (int) (image->columns % 8); bit++)
|
||
{
|
||
quantum=(size_t) ((*p) & (0x01 << bit) ? 0 : 1);
|
||
SetPixelRed(q,quantum == 0 ? 0 : QuantumRange);
|
||
SetPixelGreen(q,quantum == 0 ? 0 : QuantumRange);
|
||
SetPixelBlue(q,quantum == 0 ? 0 : QuantumRange);
|
||
if (image->storage_class == PseudoClass)
|
||
SetPixelIndex(indexes+x+bit,quantum);
|
||
}
|
||
p++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
if (image->storage_class == PseudoClass)
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetAuthenticIndexQueue(image);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
SetPixelIndex(indexes+x,*p++);
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/*
|
||
Convert DirectColor scanline.
|
||
*/
|
||
number_pixels=(MagickSizeType) image->columns*image->rows;
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelRed(q,ScaleCharToQuantum(*p));
|
||
SetPixelGreen(q,ScaleCharToQuantum(*(p+number_pixels)));
|
||
SetPixelBlue(q,ScaleCharToQuantum(*(p+2*number_pixels)));
|
||
if (image->colors != 0)
|
||
{
|
||
ssize_t
|
||
index;
|
||
|
||
index=(ssize_t) GetPixelRed(q);
|
||
SetPixelRed(q,image->colormap[(ssize_t)
|
||
ConstrainColormapIndex(image,(ssize_t) index)].red);
|
||
index=(ssize_t) GetPixelGreen(q);
|
||
SetPixelGreen(q,image->colormap[(ssize_t)
|
||
ConstrainColormapIndex(image,(ssize_t) index)].green);
|
||
index=(ssize_t) GetPixelRed(q);
|
||
SetPixelBlue(q,image->colormap[(ssize_t)
|
||
ConstrainColormapIndex(image,(ssize_t) index)].blue);
|
||
}
|
||
SetPixelOpacity(q,image->matte != MagickFalse ? QuantumRange-
|
||
ScaleCharToQuantum(*(p+number_pixels*3)) : OpaqueOpacity);
|
||
p++;
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
|
||
if (image->storage_class == PseudoClass)
|
||
(void) SyncImage(image);
|
||
if (EOFBlob(image) != MagickFalse)
|
||
{
|
||
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
|
||
image->filename);
|
||
break;
|
||
}
|
||
/*
|
||
Proceed to next image.
|
||
*/
|
||
if (image_info->number_scenes != 0)
|
||
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
|
||
break;
|
||
count=ReadBlob(image,1,&viff_info.identifier);
|
||
if ((count == 1) && (viff_info.identifier == 0xab))
|
||
{
|
||
/*
|
||
Allocate next image structure.
|
||
*/
|
||
AcquireNextImage(image_info,image);
|
||
if (GetNextImageInList(image) == (Image *) NULL)
|
||
{
|
||
status=MagickFalse;
|
||
break;
|
||
}
|
||
image=SyncNextImageInList(image);
|
||
status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
|
||
GetBlobSize(image));
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
} while ((count != 0) && (viff_info.identifier == 0xab));
|
||
(void) CloseBlob(image);
|
||
if (status == MagickFalse)
|
||
return(DestroyImageList(image));
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r V I F F I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterVIFFImage() adds properties for the VIFF image format to
|
||
% the list of supported formats. The properties 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 RegisterVIFFImage method is:
|
||
%
|
||
% size_t RegisterVIFFImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterVIFFImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("VIFF");
|
||
entry->decoder=(DecodeImageHandler *) ReadVIFFImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteVIFFImage;
|
||
entry->magick=(IsImageFormatHandler *) IsVIFF;
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->description=ConstantString("Khoros Visualization image");
|
||
entry->magick_module=ConstantString("VIFF");
|
||
(void) RegisterMagickInfo(entry);
|
||
entry=SetMagickInfo("XV");
|
||
entry->decoder=(DecodeImageHandler *) ReadVIFFImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteVIFFImage;
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->description=ConstantString("Khoros Visualization image");
|
||
entry->magick_module=ConstantString("VIFF");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r V I F F I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterVIFFImage() removes format registrations made by the
|
||
% VIFF module from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterVIFFImage method is:
|
||
%
|
||
% UnregisterVIFFImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterVIFFImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("VIFF");
|
||
(void) UnregisterMagickInfo("XV");
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e V I F F I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WriteVIFFImage() writes an image to a file in the VIFF image format.
|
||
%
|
||
% The format of the WriteVIFFImage method is:
|
||
%
|
||
% MagickBooleanType WriteVIFFImage(const ImageInfo *image_info,
|
||
% Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
*/
|
||
static MagickBooleanType WriteVIFFImage(const ImageInfo *image_info,
|
||
Image *image)
|
||
{
|
||
#define VFF_CM_genericRGB 15
|
||
#define VFF_CM_NONE 0
|
||
#define VFF_DEP_IEEEORDER 0x2
|
||
#define VFF_DES_RAW 0
|
||
#define VFF_LOC_IMPLICIT 1
|
||
#define VFF_MAPTYP_NONE 0
|
||
#define VFF_MAPTYP_1_BYTE 1
|
||
#define VFF_MS_NONE 0
|
||
#define VFF_MS_ONEPERBAND 1
|
||
#define VFF_TYP_BIT 0
|
||
#define VFF_TYP_1_BYTE 1
|
||
|
||
typedef struct _ViffInfo
|
||
{
|
||
char
|
||
identifier,
|
||
file_type,
|
||
release,
|
||
version,
|
||
machine_dependency,
|
||
reserve[3],
|
||
comment[512];
|
||
|
||
size_t
|
||
rows,
|
||
columns,
|
||
subrows;
|
||
|
||
int
|
||
x_offset,
|
||
y_offset;
|
||
|
||
unsigned int
|
||
x_bits_per_pixel,
|
||
y_bits_per_pixel,
|
||
location_type,
|
||
location_dimension,
|
||
number_of_images,
|
||
number_data_bands,
|
||
data_storage_type,
|
||
data_encode_scheme,
|
||
map_scheme,
|
||
map_storage_type,
|
||
map_rows,
|
||
map_columns,
|
||
map_subrows,
|
||
map_enable,
|
||
maps_per_cycle,
|
||
color_space_model;
|
||
} ViffInfo;
|
||
|
||
const char
|
||
*value;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
MagickOffsetType
|
||
scene;
|
||
|
||
MagickSizeType
|
||
number_pixels,
|
||
packets;
|
||
|
||
MemoryInfo
|
||
*pixel_info;
|
||
|
||
const IndexPacket
|
||
*indexes;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
unsigned char
|
||
*q;
|
||
|
||
size_t
|
||
imageListLength;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
unsigned char
|
||
*pixels;
|
||
|
||
ViffInfo
|
||
viff_info;
|
||
|
||
/*
|
||
Open output image file.
|
||
*/
|
||
assert(image_info != (const ImageInfo *) NULL);
|
||
assert(image_info->signature == MagickCoreSignature);
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
(void) memset(&viff_info,0,sizeof(ViffInfo));
|
||
scene=0;
|
||
imageListLength=GetImageListLength(image);
|
||
do
|
||
{
|
||
/*
|
||
Initialize VIFF image structure.
|
||
*/
|
||
(void) TransformImageColorspace(image,sRGBColorspace);
|
||
viff_info.identifier=(char) -85;
|
||
viff_info.file_type=1;
|
||
viff_info.release=1;
|
||
viff_info.version=3;
|
||
viff_info.machine_dependency=VFF_DEP_IEEEORDER; /* IEEE byte ordering */
|
||
*viff_info.comment='\0';
|
||
value=GetImageProperty(image,"comment");
|
||
if (value != (const char *) NULL)
|
||
(void) CopyMagickString(viff_info.comment,value,MagickMin(strlen(value),
|
||
511)+1);
|
||
viff_info.rows=image->columns;
|
||
viff_info.columns=image->rows;
|
||
viff_info.subrows=0;
|
||
viff_info.x_offset=(~0);
|
||
viff_info.y_offset=(~0);
|
||
viff_info.x_bits_per_pixel=0;
|
||
viff_info.y_bits_per_pixel=0;
|
||
viff_info.location_type=VFF_LOC_IMPLICIT;
|
||
viff_info.location_dimension=0;
|
||
viff_info.number_of_images=1;
|
||
viff_info.data_encode_scheme=VFF_DES_RAW;
|
||
viff_info.map_scheme=VFF_MS_NONE;
|
||
viff_info.map_storage_type=VFF_MAPTYP_NONE;
|
||
viff_info.map_rows=0;
|
||
viff_info.map_columns=0;
|
||
viff_info.map_subrows=0;
|
||
viff_info.map_enable=1; /* no colormap */
|
||
viff_info.maps_per_cycle=0;
|
||
number_pixels=(MagickSizeType) image->columns*image->rows;
|
||
if (image->storage_class == DirectClass)
|
||
{
|
||
/*
|
||
Full color VIFF raster.
|
||
*/
|
||
viff_info.number_data_bands=image->matte ? 4U : 3U;
|
||
viff_info.color_space_model=VFF_CM_genericRGB;
|
||
viff_info.data_storage_type=VFF_TYP_1_BYTE;
|
||
packets=viff_info.number_data_bands*number_pixels;
|
||
}
|
||
else
|
||
{
|
||
viff_info.number_data_bands=1;
|
||
viff_info.color_space_model=VFF_CM_NONE;
|
||
viff_info.data_storage_type=VFF_TYP_1_BYTE;
|
||
packets=number_pixels;
|
||
if (SetImageGray(image,&image->exception) == MagickFalse)
|
||
{
|
||
/*
|
||
Colormapped VIFF raster.
|
||
*/
|
||
viff_info.map_scheme=VFF_MS_ONEPERBAND;
|
||
viff_info.map_storage_type=VFF_MAPTYP_1_BYTE;
|
||
viff_info.map_rows=3;
|
||
viff_info.map_columns=(unsigned int) image->colors;
|
||
}
|
||
else
|
||
if (image->colors <= 2)
|
||
{
|
||
/*
|
||
Monochrome VIFF raster.
|
||
*/
|
||
viff_info.data_storage_type=VFF_TYP_BIT;
|
||
packets=((image->columns+7) >> 3)*image->rows;
|
||
}
|
||
}
|
||
/*
|
||
Write VIFF image header (pad to 1024 bytes).
|
||
*/
|
||
(void) WriteBlob(image,sizeof(viff_info.identifier),(unsigned char *)
|
||
&viff_info.identifier);
|
||
(void) WriteBlob(image,sizeof(viff_info.file_type),(unsigned char *)
|
||
&viff_info.file_type);
|
||
(void) WriteBlob(image,sizeof(viff_info.release),(unsigned char *)
|
||
&viff_info.release);
|
||
(void) WriteBlob(image,sizeof(viff_info.version),(unsigned char *)
|
||
&viff_info.version);
|
||
(void) WriteBlob(image,sizeof(viff_info.machine_dependency),
|
||
(unsigned char *) &viff_info.machine_dependency);
|
||
(void) WriteBlob(image,sizeof(viff_info.reserve),(unsigned char *)
|
||
viff_info.reserve);
|
||
(void) WriteBlob(image,512,(unsigned char *) viff_info.comment);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.rows);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.columns);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.subrows);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.x_offset);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.y_offset);
|
||
viff_info.x_bits_per_pixel=(unsigned int) ((63 << 24) | (128 << 16));
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.x_bits_per_pixel);
|
||
viff_info.y_bits_per_pixel=(unsigned int) ((63 << 24) | (128 << 16));
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.y_bits_per_pixel);
|
||
(void) WriteBlobMSBLong(image,viff_info.location_type);
|
||
(void) WriteBlobMSBLong(image,viff_info.location_dimension);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.number_of_images);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.number_data_bands);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.data_storage_type);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.data_encode_scheme);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_scheme);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_storage_type);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_rows);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_columns);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_subrows);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_enable);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.maps_per_cycle);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) viff_info.color_space_model);
|
||
for (i=0; i < 420; i++)
|
||
(void) WriteBlobByte(image,'\0');
|
||
/*
|
||
Convert MIFF to VIFF raster pixels.
|
||
*/
|
||
pixel_info=AcquireVirtualMemory((size_t) packets,sizeof(*pixels));
|
||
if (pixel_info == (MemoryInfo *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
|
||
q=pixels;
|
||
if (image->storage_class == DirectClass)
|
||
{
|
||
/*
|
||
Convert DirectClass packet to VIFF RGB pixel.
|
||
*/
|
||
number_pixels=(MagickSizeType) image->columns*image->rows;
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
*q=ScaleQuantumToChar(GetPixelRed(p));
|
||
*(q+number_pixels)=ScaleQuantumToChar(GetPixelGreen(p));
|
||
*(q+number_pixels*2)=ScaleQuantumToChar(GetPixelBlue(p));
|
||
if (image->matte != MagickFalse)
|
||
*(q+number_pixels*3)=ScaleQuantumToChar((Quantum)
|
||
(GetPixelAlpha(p)));
|
||
p++;
|
||
q++;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
if (SetImageGray(image,&image->exception) == MagickFalse)
|
||
{
|
||
unsigned char
|
||
*viff_colormap;
|
||
|
||
/*
|
||
Dump colormap to file.
|
||
*/
|
||
viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
|
||
3*sizeof(*viff_colormap));
|
||
if (viff_colormap == (unsigned char *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
q=viff_colormap;
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
*q++=ScaleQuantumToChar(image->colormap[i].red);
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
*q++=ScaleQuantumToChar(image->colormap[i].green);
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
*q++=ScaleQuantumToChar(image->colormap[i].blue);
|
||
(void) WriteBlob(image,3*image->colors,viff_colormap);
|
||
viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap);
|
||
/*
|
||
Convert PseudoClass packet to VIFF colormapped pixels.
|
||
*/
|
||
q=pixels;
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetVirtualIndexQueue(image);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
*q++=(unsigned char) ((size_t) GetPixelIndex(indexes+x));
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
if (image->colors <= 2)
|
||
{
|
||
ssize_t
|
||
x,
|
||
y;
|
||
|
||
unsigned char
|
||
bit,
|
||
byte;
|
||
|
||
/*
|
||
Convert PseudoClass image to a VIFF monochrome image.
|
||
*/
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetVirtualIndexQueue(image);
|
||
bit=0;
|
||
byte=0;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
byte>>=1;
|
||
if (GetPixelLuma(image,p) < (QuantumRange/2.0))
|
||
byte|=0x80;
|
||
bit++;
|
||
if (bit == 8)
|
||
{
|
||
*q++=byte;
|
||
bit=0;
|
||
byte=0;
|
||
}
|
||
}
|
||
if (bit != 0)
|
||
*q++=byte >> (8-bit);
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType)
|
||
y,image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/*
|
||
Convert PseudoClass packet to VIFF grayscale pixel.
|
||
*/
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
*q++=(unsigned char) ClampToQuantum(GetPixelLuma(image,p));
|
||
p++;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType)
|
||
y,image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
(void) WriteBlob(image,(size_t) packets,pixels);
|
||
pixel_info=RelinquishVirtualMemory(pixel_info);
|
||
if (GetNextImageInList(image) == (Image *) NULL)
|
||
break;
|
||
image=SyncNextImageInList(image);
|
||
status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
|
||
if (status == MagickFalse)
|
||
break;
|
||
} while (image_info->adjoin != MagickFalse);
|
||
(void) CloseBlob(image);
|
||
return(MagickTrue);
|
||
}
|