forked from openkylin/imagemagick
1016 lines
33 KiB
C
1016 lines
33 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% PPPP DDDD BBBB %
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% P P D D B B %
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% PPPP D D BBBB %
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% P D D B B %
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% P DDDD BBBB %
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% %
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% %
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% Read/Write Palm Database ImageViewer 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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% 20071202 TS * rewrote RLE decoder - old version could cause buffer overflows
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% * failure of RLE decoding now thows error RLEDecoderError
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% * fixed bug in RLE decoding - now all rows are decoded, not just
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% the first one
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% * fixed bug in reader - record offsets now handled correctly
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% * fixed bug in reader - only bits 0..2 indicate compression type
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% * in writer: now using image color count instead of depth
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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/colormap-private.h"
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#include "magick/color-private.h"
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#include "magick/colormap.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.h"
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#include "magick/constitute.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/module.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/timer-private.h"
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#include "magick/utility.h"
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/*
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Typedef declarations.
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*/
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typedef struct _PDBInfo
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{
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char
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name[32];
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short int
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attributes,
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version;
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size_t
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create_time,
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modify_time,
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archive_time,
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modify_number,
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application_info,
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sort_info;
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char
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type[4], /* database type identifier "vIMG" */
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id[4]; /* database creator identifier "View" */
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size_t
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seed,
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next_record;
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short int
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number_records;
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} PDBInfo;
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typedef struct _PDBImage
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{
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char
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name[32],
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version;
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size_t
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reserved_1,
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note;
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short int
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x_last,
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y_last;
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size_t
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reserved_2;
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short int
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width,
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height;
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unsigned char
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type;
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unsigned short
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x_anchor,
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y_anchor;
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} PDBImage;
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WritePDBImage(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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% D e c o d e I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% DecodeImage unpacks the packed image pixels into runlength-encoded
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% pixel packets.
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%
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% The format of the DecodeImage method is:
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%
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% MagickBooleanType DecodeImage(Image *image,unsigned char *pixels,
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% 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 image: the address of a structure of type Image.
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%
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% o pixels: The address of a byte (8 bits) array of pixel data created by
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% the decoding process.
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%
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% o length: Number of bytes to read into buffer 'pixels'.
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%
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*/
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static MagickBooleanType DecodeImage(Image *image, unsigned char *pixels,
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const size_t length)
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{
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#define RLE_MODE_NONE -1
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#define RLE_MODE_COPY 0
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#define RLE_MODE_RUN 1
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int data = 0, count = 0;
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unsigned char *p;
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int mode = RLE_MODE_NONE;
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for (p = pixels; p < pixels + length; p++) {
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if (0 == count) {
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data = ReadBlobByte( image );
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if (-1 == data) return MagickFalse;
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if (data > 128) {
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mode = RLE_MODE_RUN;
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count = data - 128 + 1;
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data = ReadBlobByte( image );
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if (-1 == data) return MagickFalse;
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} else {
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mode = RLE_MODE_COPY;
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count = data + 1;
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}
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}
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if (RLE_MODE_COPY == mode) {
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data = ReadBlobByte( image );
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if (-1 == data) return MagickFalse;
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}
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*p = (unsigned char)data;
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--count;
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}
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return MagickTrue;
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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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% I s P D B %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsPDB() returns MagickTrue if the image format type, identified by the
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% magick string, is PDB.
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%
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% The format of the ReadPDBImage method is:
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%
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% MagickBooleanType IsPDB(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 IsPDB(const unsigned char *magick,const size_t length)
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{
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if (length < 68)
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return(MagickFalse);
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if (memcmp(magick+60,"vIMGView",8) == 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 P D B 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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% ReadPDBImage() reads an Pilot image file and returns it. It
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% allocates the memory necessary for the new Image structure and returns a
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% pointer to the new image.
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%
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% The format of the ReadPDBImage method is:
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%
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% Image *ReadPDBImage(const ImageInfo *image_info,ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static Image *ReadPDBImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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unsigned char
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attributes,
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tag[3];
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Image
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*image;
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IndexPacket
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index;
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MagickBooleanType
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status;
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PDBImage
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pdb_image;
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PDBInfo
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pdb_info;
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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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unsigned char
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*p;
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size_t
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bits_per_pixel,
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num_pad_bytes,
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one,
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packets;
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ssize_t
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count,
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img_offset,
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comment_offset = 0,
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y;
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unsigned char
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*pixels;
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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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Determine if this a PDB image file.
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*/
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(void) memset(&pdb_info,0,sizeof(pdb_info));
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count=ReadBlob(image,sizeof(pdb_info.name),(unsigned char *) pdb_info.name);
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if (count != sizeof(pdb_info.name))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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pdb_info.attributes=(short) ReadBlobMSBShort(image);
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pdb_info.version=(short) ReadBlobMSBShort(image);
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pdb_info.create_time=ReadBlobMSBLong(image);
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pdb_info.modify_time=ReadBlobMSBLong(image);
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pdb_info.archive_time=ReadBlobMSBLong(image);
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pdb_info.modify_number=ReadBlobMSBLong(image);
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pdb_info.application_info=ReadBlobMSBLong(image);
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pdb_info.sort_info=ReadBlobMSBLong(image);
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(void) ReadBlob(image,4,(unsigned char *) pdb_info.type);
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(void) ReadBlob(image,4,(unsigned char *) pdb_info.id);
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pdb_info.seed=ReadBlobMSBLong(image);
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pdb_info.next_record=ReadBlobMSBLong(image);
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pdb_info.number_records=(short) ReadBlobMSBShort(image);
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if ((memcmp(pdb_info.type,"vIMG",4) != 0) ||
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(memcmp(pdb_info.id,"View",4) != 0))
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if (pdb_info.next_record != 0)
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ThrowReaderException(CoderError,"MultipleRecordListNotSupported");
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/*
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Read record header.
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*/
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img_offset=(ssize_t) ReadBlobMSBSignedLong(image);
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attributes=(unsigned char) (ReadBlobByte(image));
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(void) attributes;
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count=ReadBlob(image,3,(unsigned char *) tag);
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if (count != 3 || memcmp(tag,"\x6f\x80\x00",3) != 0)
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ThrowReaderException(CorruptImageError,"CorruptImage");
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if (pdb_info.number_records > 1)
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{
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comment_offset=(ssize_t) ReadBlobMSBSignedLong(image);
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attributes=(unsigned char) (ReadBlobByte(image));
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count=ReadBlob(image,3,(unsigned char *) tag);
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if (count != 3 || memcmp(tag,"\x6f\x80\x01",3) != 0)
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ThrowReaderException(CorruptImageError,"CorruptImage");
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}
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num_pad_bytes = (size_t) (img_offset - TellBlob( image ));
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while (num_pad_bytes-- != 0)
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{
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int
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c;
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c=ReadBlobByte(image);
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if (c == EOF)
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break;
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}
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/*
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Read image header.
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*/
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count=ReadBlob(image,sizeof(pdb_image.name),(unsigned char *) pdb_image.name);
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if (count != sizeof(pdb_image.name))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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pdb_image.version=ReadBlobByte(image);
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pdb_image.type=(unsigned char) ReadBlobByte(image);
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pdb_image.reserved_1=ReadBlobMSBLong(image);
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pdb_image.note=ReadBlobMSBLong(image);
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pdb_image.x_last=(short) ReadBlobMSBShort(image);
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pdb_image.y_last=(short) ReadBlobMSBShort(image);
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pdb_image.reserved_2=ReadBlobMSBLong(image);
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pdb_image.x_anchor=ReadBlobMSBShort(image);
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pdb_image.y_anchor=ReadBlobMSBShort(image);
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pdb_image.width=(short) ReadBlobMSBShort(image);
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pdb_image.height=(short) ReadBlobMSBShort(image);
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/*
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Initialize image structure.
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*/
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image->columns=(size_t) pdb_image.width;
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image->rows=(size_t) pdb_image.height;
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image->depth=8;
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image->storage_class=PseudoClass;
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bits_per_pixel=pdb_image.type == 0 ? 2UL : pdb_image.type == 2 ? 4UL : 1UL;
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one=1;
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if (AcquireImageColormap(image,one << bits_per_pixel) == MagickFalse)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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if (image_info->ping != MagickFalse)
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{
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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status=SetImageExtent(image,image->columns,image->rows);
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if (status != MagickFalse)
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status=ResetImagePixels(image,exception);
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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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packets=(bits_per_pixel*image->columns+7)/8;
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pixels=(unsigned char *) AcquireQuantumMemory(packets+257UL,image->rows*
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sizeof(*pixels));
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if (pixels == (unsigned char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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(void) memset(pixels,0,(packets+257UL)*image->rows*sizeof(*pixels));
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switch (pdb_image.version & 0x07)
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{
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case 0:
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{
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image->compression=NoCompression;
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count=(ssize_t) ReadBlob(image,packets*image->rows,pixels);
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if (count != (ssize_t) (packets*image->rows))
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{
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pixels=(unsigned char *) RelinquishMagickMemory(pixels);
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ThrowReaderException( CorruptImageError,"RLEDecoderError");
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}
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break;
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}
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case 1:
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{
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image->compression=RLECompression;
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if (DecodeImage(image,pixels,packets*image->rows) == MagickFalse)
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{
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pixels=(unsigned char *) RelinquishMagickMemory(pixels);
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ThrowReaderException( CorruptImageError,"RLEDecoderError");
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}
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break;
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}
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default:
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{
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pixels=(unsigned char *) RelinquishMagickMemory(pixels);
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ThrowReaderException(CorruptImageError,
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"UnrecognizedImageCompressionType");
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}
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}
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p=pixels;
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switch (bits_per_pixel)
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{
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case 1:
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{
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int
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bit;
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/*
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Read 1-bit PDB image.
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*/
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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indexes=GetAuthenticIndexQueue(image);
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bit=0;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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index=(Quantum) (*p & (0x80 >> bit) ? 0x00 : 0x01);
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indexes[x]=index;
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q++;
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bit++;
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if (bit == 8)
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{
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p++;
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bit=0;
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}
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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(void) SyncImage(image);
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break;
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}
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case 2:
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{
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unsigned int
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shift;
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/*
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Read 2-bit PDB image.
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*/
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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indexes=GetAuthenticIndexQueue(image);
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shift=8;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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shift-=2;
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index=ConstrainColormapIndex(image,3UL-((*p >> shift) & 0x03));
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SetPixelIndex(indexes+x,index);
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if (shift == 0)
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{
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shift=8;
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p++;
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}
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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(void) SyncImage(image);
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break;
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}
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case 4:
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{
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unsigned int
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shift;
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/*
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Read 4-bit PDB image.
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*/
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
|
||
indexes=GetAuthenticIndexQueue(image);
|
||
shift=8;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
shift-=4;
|
||
index=ConstrainColormapIndex(image,15UL-((*p >> shift) & 0x0f));
|
||
SetPixelIndex(indexes+x,index);
|
||
if (shift == 0)
|
||
{
|
||
shift=8;
|
||
p++;
|
||
}
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
(void) SyncImage(image);
|
||
break;
|
||
}
|
||
default:
|
||
{
|
||
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
}
|
||
}
|
||
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
|
||
if (EOFBlob(image) != MagickFalse)
|
||
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
|
||
image->filename);
|
||
if (pdb_info.number_records > 1)
|
||
{
|
||
char
|
||
*comment;
|
||
|
||
int
|
||
c;
|
||
|
||
char
|
||
*p;
|
||
|
||
size_t
|
||
length;
|
||
|
||
num_pad_bytes = (size_t) (comment_offset - TellBlob( image ));
|
||
while (num_pad_bytes-- != 0)
|
||
{
|
||
int
|
||
c;
|
||
|
||
c=ReadBlobByte(image);
|
||
if (c == EOF)
|
||
break;
|
||
}
|
||
|
||
/*
|
||
Read comment.
|
||
*/
|
||
c=ReadBlobByte(image);
|
||
length=MaxTextExtent;
|
||
comment=AcquireString((char *) NULL);
|
||
for (p=comment; c != EOF; p++)
|
||
{
|
||
if ((size_t) (p-comment+MaxTextExtent) >= length)
|
||
{
|
||
*p='\0';
|
||
length<<=1;
|
||
length+=MaxTextExtent;
|
||
comment=(char *) ResizeQuantumMemory(comment,length+MaxTextExtent,
|
||
sizeof(*comment));
|
||
if (comment == (char *) NULL)
|
||
break;
|
||
p=comment+strlen(comment);
|
||
}
|
||
*p=c;
|
||
c=ReadBlobByte(image);
|
||
}
|
||
*p='\0';
|
||
if (comment == (char *) NULL)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
(void) SetImageProperty(image,"comment",comment);
|
||
comment=DestroyString(comment);
|
||
}
|
||
(void) CloseBlob(image);
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r P D B I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterPDBImage() adds properties for the PDB 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 RegisterPDBImage method is:
|
||
%
|
||
% size_t RegisterPDBImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterPDBImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("PDB");
|
||
entry->decoder=(DecodeImageHandler *) ReadPDBImage;
|
||
entry->encoder=(EncodeImageHandler *) WritePDBImage;
|
||
entry->magick=(IsImageFormatHandler *) IsPDB;
|
||
entry->description=ConstantString("Palm Database ImageViewer Format");
|
||
entry->magick_module=ConstantString("PDB");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r P D B I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterPDBImage() removes format registrations made by the
|
||
% PDB module from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterPDBImage method is:
|
||
%
|
||
% UnregisterPDBImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterPDBImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("PDB");
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e P D B I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WritePDBImage() writes an image
|
||
%
|
||
% The format of the WritePDBImage method is:
|
||
%
|
||
% MagickBooleanType WritePDBImage(const ImageInfo *image_info,Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
%
|
||
*/
|
||
|
||
static unsigned char *EncodeRLE(unsigned char *destination,
|
||
unsigned char *source,size_t literal,size_t repeat)
|
||
{
|
||
if (literal > 0)
|
||
*destination++=(unsigned char) (literal-1);
|
||
(void) memcpy(destination,source,literal);
|
||
destination+=literal;
|
||
if (repeat > 0)
|
||
{
|
||
*destination++=(unsigned char) (0x80 | (repeat-1));
|
||
*destination++=source[literal];
|
||
}
|
||
return(destination);
|
||
}
|
||
|
||
static MagickBooleanType WritePDBImage(const ImageInfo *image_info,Image *image)
|
||
{
|
||
char
|
||
filename[MaxTextExtent];
|
||
|
||
const char
|
||
*comment;
|
||
|
||
int
|
||
bits;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
PDBImage
|
||
pdb_image;
|
||
|
||
PDBInfo
|
||
pdb_info;
|
||
|
||
QuantumInfo
|
||
*quantum_info;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
unsigned char
|
||
*q;
|
||
|
||
size_t
|
||
bits_per_pixel,
|
||
literal,
|
||
packets,
|
||
packet_size,
|
||
repeat;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
unsigned char
|
||
*buffer,
|
||
*runlength,
|
||
*scanline;
|
||
|
||
/*
|
||
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) TransformImageColorspace(image,sRGBColorspace);
|
||
if ((image -> colors <= 2 ) ||
|
||
(GetImageType(image,&image->exception ) == BilevelType)) {
|
||
bits_per_pixel=1;
|
||
} else if (image->colors <= 4) {
|
||
bits_per_pixel=2;
|
||
} else if (image->colors <= 8) {
|
||
bits_per_pixel=3;
|
||
} else {
|
||
bits_per_pixel=4;
|
||
}
|
||
(void) memset(&pdb_info,0,sizeof(pdb_info));
|
||
(void) memset(&pdb_image,0,sizeof(pdb_image));
|
||
GetPathComponent(image_info->filename,TailPath,filename);
|
||
(void) CopyMagickString(pdb_info.name,filename,sizeof(pdb_info.name));
|
||
pdb_info.attributes=0;
|
||
pdb_info.version=0;
|
||
pdb_info.create_time=GetMagickTime();
|
||
pdb_info.modify_time=pdb_info.create_time;
|
||
pdb_info.archive_time=0;
|
||
pdb_info.modify_number=0;
|
||
pdb_info.application_info=0;
|
||
pdb_info.sort_info=0;
|
||
(void) memcpy(pdb_info.type,"vIMG",4);
|
||
(void) memcpy(pdb_info.id,"View",4);
|
||
pdb_info.seed=0;
|
||
pdb_info.next_record=0;
|
||
comment=GetImageProperty(image,"comment");
|
||
pdb_info.number_records=(comment == (const char *) NULL ? 1 : 2);
|
||
(void) WriteBlob(image,sizeof(pdb_info.name),(unsigned char *) pdb_info.name);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_info.attributes);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_info.version);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.create_time);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.modify_time);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.archive_time);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.modify_number);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.application_info);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.sort_info);
|
||
(void) WriteBlob(image,4,(unsigned char *) pdb_info.type);
|
||
(void) WriteBlob(image,4,(unsigned char *) pdb_info.id);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.seed);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_info.next_record);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_info.number_records);
|
||
(void) CopyMagickString(pdb_image.name,pdb_info.name,sizeof(pdb_image.name));
|
||
pdb_image.version=1; /* RLE Compressed */
|
||
switch (bits_per_pixel)
|
||
{
|
||
case 1: pdb_image.type=(unsigned char) 0xff; break; /* monochrome */
|
||
case 2: pdb_image.type=(unsigned char) 0x00; break; /* 2 bit gray */
|
||
default: pdb_image.type=(unsigned char) 0x02; /* 4 bit gray */
|
||
}
|
||
pdb_image.reserved_1=0;
|
||
pdb_image.note=0;
|
||
pdb_image.x_last=0;
|
||
pdb_image.y_last=0;
|
||
pdb_image.reserved_2=0;
|
||
pdb_image.x_anchor=(unsigned short) 0xffff;
|
||
pdb_image.y_anchor=(unsigned short) 0xffff;
|
||
pdb_image.width=(short) image->columns;
|
||
if (image->columns % 16)
|
||
pdb_image.width=(short) (16*(image->columns/16+1));
|
||
pdb_image.height=(short) image->rows;
|
||
packets=((bits_per_pixel*image->columns+7)/8);
|
||
packet_size=(size_t) (bits_per_pixel > 8 ? 2 : 1);
|
||
runlength=(unsigned char *) AcquireQuantumMemory(9UL*packets,
|
||
image->rows*sizeof(*runlength));
|
||
buffer=(unsigned char *) AcquireQuantumMemory(512,sizeof(*buffer));
|
||
scanline=(unsigned char *) AcquireQuantumMemory(image->columns,packet_size*
|
||
sizeof(*scanline));
|
||
if ((runlength == (unsigned char *) NULL) ||
|
||
(buffer == (unsigned char *) NULL) ||
|
||
(scanline == (unsigned char *) NULL))
|
||
{
|
||
if (runlength != (unsigned char *) NULL)
|
||
runlength=(unsigned char *) RelinquishMagickMemory(runlength);
|
||
if (buffer != (unsigned char *) NULL)
|
||
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
|
||
if (scanline != (unsigned char *) NULL)
|
||
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
}
|
||
(void) memset(buffer,0,512*sizeof(*buffer));
|
||
(void) memset(scanline,0,image->columns*packet_size*sizeof(*scanline));
|
||
if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
|
||
(void) TransformImageColorspace(image,sRGBColorspace);
|
||
/*
|
||
Convert to GRAY raster scanline.
|
||
*/
|
||
quantum_info=AcquireQuantumInfo(image_info,image);
|
||
if (quantum_info == (QuantumInfo *) NULL)
|
||
{
|
||
if (runlength != (unsigned char *) NULL)
|
||
runlength=(unsigned char *) RelinquishMagickMemory(runlength);
|
||
if (buffer != (unsigned char *) NULL)
|
||
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
|
||
if (scanline != (unsigned char *) NULL)
|
||
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
}
|
||
status=SetQuantumDepth(image,quantum_info,bits_per_pixel > 8 ? 16 : 8);
|
||
bits=8/(int) bits_per_pixel-1; /* start at most significant bits */
|
||
literal=0;
|
||
repeat=0;
|
||
q=runlength;
|
||
buffer[0]=0x00;
|
||
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;
|
||
(void) ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info,
|
||
GrayQuantum,scanline,&image->exception);
|
||
for (x=0; x < (ssize_t) pdb_image.width; x++)
|
||
{
|
||
if (x < (ssize_t) image->columns)
|
||
buffer[literal+repeat]|=(0xff-scanline[x*packet_size]) >>
|
||
(8-bits_per_pixel) << bits*bits_per_pixel;
|
||
bits--;
|
||
if (bits < 0)
|
||
{
|
||
if (((literal+repeat) > 0) &&
|
||
(buffer[literal+repeat] == buffer[literal+repeat-1]))
|
||
{
|
||
if (repeat == 0)
|
||
{
|
||
literal--;
|
||
repeat++;
|
||
}
|
||
repeat++;
|
||
if (0x7f < repeat)
|
||
{
|
||
q=EncodeRLE(q,buffer,literal,repeat);
|
||
literal=0;
|
||
repeat=0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (repeat >= 2)
|
||
literal+=repeat;
|
||
else
|
||
{
|
||
q=EncodeRLE(q,buffer,literal,repeat);
|
||
buffer[0]=buffer[literal+repeat];
|
||
literal=0;
|
||
}
|
||
literal++;
|
||
repeat=0;
|
||
if (0x7f < literal)
|
||
{
|
||
q=EncodeRLE(q,buffer,(literal < 0x80 ? literal : 0x80),0);
|
||
(void) memmove(buffer,buffer+literal+repeat,0x80);
|
||
literal-=0x80;
|
||
}
|
||
}
|
||
bits=8/(int) bits_per_pixel-1;
|
||
buffer[literal+repeat]=0x00;
|
||
}
|
||
}
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
q=EncodeRLE(q,buffer,literal,repeat);
|
||
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
|
||
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
|
||
quantum_info=DestroyQuantumInfo(quantum_info);
|
||
/*
|
||
Write the Image record header.
|
||
*/
|
||
(void) WriteBlobMSBLong(image,(unsigned int) (TellBlob(image)+8*
|
||
pdb_info.number_records));
|
||
(void) WriteBlobByte(image,0x40);
|
||
(void) WriteBlobByte(image,0x6f);
|
||
(void) WriteBlobByte(image,0x80);
|
||
(void) WriteBlobByte(image,0);
|
||
if (pdb_info.number_records > 1)
|
||
{
|
||
/*
|
||
Write the comment record header.
|
||
*/
|
||
(void) WriteBlobMSBLong(image,(unsigned int) (TellBlob(image)+8+58+q-
|
||
runlength));
|
||
(void) WriteBlobByte(image,0x40);
|
||
(void) WriteBlobByte(image,0x6f);
|
||
(void) WriteBlobByte(image,0x80);
|
||
(void) WriteBlobByte(image,1);
|
||
}
|
||
/*
|
||
Write the Image data.
|
||
*/
|
||
(void) WriteBlob(image,sizeof(pdb_image.name),(unsigned char *)
|
||
pdb_image.name);
|
||
(void) WriteBlobByte(image,(unsigned char) pdb_image.version);
|
||
(void) WriteBlobByte(image,pdb_image.type);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_image.reserved_1);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_image.note);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_image.x_last);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_image.y_last);
|
||
(void) WriteBlobMSBLong(image,(unsigned int) pdb_image.reserved_2);
|
||
(void) WriteBlobMSBShort(image,pdb_image.x_anchor);
|
||
(void) WriteBlobMSBShort(image,pdb_image.y_anchor);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_image.width);
|
||
(void) WriteBlobMSBShort(image,(unsigned short) pdb_image.height);
|
||
(void) WriteBlob(image,(size_t) (q-runlength),runlength);
|
||
runlength=(unsigned char *) RelinquishMagickMemory(runlength);
|
||
if (comment != (const char *) NULL)
|
||
(void) WriteBlobString(image,comment);
|
||
(void) CloseBlob(image);
|
||
return(MagickTrue);
|
||
}
|