2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % Read/Write Palm Database ImageViewer Image Format %
20 % Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % https://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
37 % 20071202 TS * rewrote RLE decoder - old version could cause buffer overflows
38 % * failure of RLE decoding now thows error RLEDecoderError
39 % * fixed bug in RLE decoding - now all rows are decoded, not just
41 % * fixed bug in reader - record offsets now handled correctly
42 % * fixed bug in reader - only bits 0..2 indicate compression type
43 % * in writer: now using image color count instead of depth
49 #include "MagickCore/studio.h"
50 #include "MagickCore/attribute.h"
51 #include "MagickCore/blob.h"
52 #include "MagickCore/blob-private.h"
53 #include "MagickCore/cache.h"
54 #include "MagickCore/colormap-private.h"
55 #include "MagickCore/color-private.h"
56 #include "MagickCore/colormap.h"
57 #include "MagickCore/colorspace.h"
58 #include "MagickCore/colorspace-private.h"
59 #include "MagickCore/constitute.h"
60 #include "MagickCore/exception.h"
61 #include "MagickCore/exception-private.h"
62 #include "MagickCore/image.h"
63 #include "MagickCore/image-private.h"
64 #include "MagickCore/list.h"
65 #include "MagickCore/magick.h"
66 #include "MagickCore/memory_.h"
67 #include "MagickCore/monitor.h"
68 #include "MagickCore/monitor-private.h"
69 #include "MagickCore/pixel-accessor.h"
70 #include "MagickCore/property.h"
71 #include "MagickCore/quantum-private.h"
72 #include "MagickCore/quantum-private.h"
73 #include "MagickCore/static.h"
74 #include "MagickCore/string_.h"
75 #include "MagickCore/module.h"
80 typedef struct _PDBInfo
98 type[4], /* database type identifier "vIMG" */
99 id[4]; /* database creator identifier "View" */
109 typedef struct _PDBImage
138 Forward declarations.
140 static MagickBooleanType
141 WritePDBImage(const ImageInfo *,Image *,ExceptionInfo *);
144 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
148 % D e c o d e I m a g e %
152 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
154 % DecodeImage unpacks the packed image pixels into runlength-encoded
157 % The format of the DecodeImage method is:
159 % MagickBooleanType DecodeImage(Image *image,unsigned char *pixels,
160 % const size_t length)
162 % A description of each parameter follows:
164 % o image: the address of a structure of type Image.
166 % o pixels: The address of a byte (8 bits) array of pixel data created by
167 % the decoding process.
169 % o length: Number of bytes to read into buffer 'pixels'.
172 static MagickBooleanType DecodeImage(Image *image, unsigned char *pixels,
175 #define RLE_MODE_NONE -1
176 #define RLE_MODE_COPY 0
177 #define RLE_MODE_RUN 1
179 int data = 0, count = 0;
181 int mode = RLE_MODE_NONE;
183 for (p = pixels; p < pixels + length; p++) {
185 data = ReadBlobByte( image );
186 if (-1 == data) return MagickFalse;
189 count = data - 128 + 1;
190 data = ReadBlobByte( image );
191 if (-1 == data) return MagickFalse;
193 mode = RLE_MODE_COPY;
198 if (RLE_MODE_COPY == mode) {
199 data = ReadBlobByte( image );
200 if (-1 == data) return MagickFalse;
202 *p = (unsigned char)data;
209 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
217 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219 % IsPDB() returns MagickTrue if the image format type, identified by the
220 % magick string, is PDB.
222 % The format of the ReadPDBImage method is:
224 % MagickBooleanType IsPDB(const unsigned char *magick,const size_t length)
226 % A description of each parameter follows:
228 % o magick: compare image format pattern against these bytes.
230 % o length: Specifies the length of the magick string.
233 static MagickBooleanType IsPDB(const unsigned char *magick,const size_t length)
237 if (memcmp(magick+60,"vIMGView",8) == 0)
243 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247 % R e a d P D B I m a g e %
251 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
253 % ReadPDBImage() reads an Pilot image file and returns it. It
254 % allocates the memory necessary for the new Image structure and returns a
255 % pointer to the new image.
257 % The format of the ReadPDBImage method is:
259 % Image *ReadPDBImage(const ImageInfo *image_info,ExceptionInfo *exception)
261 % A description of each parameter follows:
263 % o image_info: the image info.
265 % o exception: return any errors or warnings in this structure.
268 static Image *ReadPDBImage(const ImageInfo *image_info,ExceptionInfo *exception)
295 register unsigned char
316 assert(image_info != (const ImageInfo *) NULL);
317 assert(image_info->signature == MagickCoreSignature);
318 if (image_info->debug != MagickFalse)
319 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
320 image_info->filename);
321 assert(exception != (ExceptionInfo *) NULL);
322 assert(exception->signature == MagickCoreSignature);
323 image=AcquireImage(image_info,exception);
324 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
325 if (status == MagickFalse)
327 image=DestroyImageList(image);
328 return((Image *) NULL);
331 Determine if this a PDB image file.
333 count=ReadBlob(image,sizeof(pdb_info.name),(unsigned char *) pdb_info.name);
334 if (count != sizeof(pdb_info.name))
335 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
336 pdb_info.attributes=(short) ReadBlobMSBShort(image);
337 pdb_info.version=(short) ReadBlobMSBShort(image);
338 pdb_info.create_time=ReadBlobMSBLong(image);
339 pdb_info.modify_time=ReadBlobMSBLong(image);
340 pdb_info.archive_time=ReadBlobMSBLong(image);
341 pdb_info.modify_number=ReadBlobMSBLong(image);
342 pdb_info.application_info=ReadBlobMSBLong(image);
343 pdb_info.sort_info=ReadBlobMSBLong(image);
344 (void) ReadBlob(image,4,(unsigned char *) pdb_info.type);
345 (void) ReadBlob(image,4,(unsigned char *) pdb_info.id);
346 pdb_info.seed=ReadBlobMSBLong(image);
347 pdb_info.next_record=ReadBlobMSBLong(image);
348 pdb_info.number_records=(short) ReadBlobMSBShort(image);
349 if ((memcmp(pdb_info.type,"vIMG",4) != 0) ||
350 (memcmp(pdb_info.id,"View",4) != 0))
351 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
352 if (pdb_info.next_record != 0)
353 ThrowReaderException(CoderError,"MultipleRecordListNotSupported");
357 img_offset=(ssize_t) ReadBlobMSBSignedLong(image);
358 attributes=(unsigned char) ReadBlobByte(image);
360 count=ReadBlob(image,3,(unsigned char *) tag);
361 if (count != 3 || memcmp(tag,"\x6f\x80\x00",3) != 0)
362 ThrowReaderException(CorruptImageError,"CorruptImage");
363 if (pdb_info.number_records > 1)
365 comment_offset=(ssize_t) ReadBlobMSBSignedLong(image);
366 attributes=(unsigned char) ReadBlobByte(image);
367 count=ReadBlob(image,3,(unsigned char *) tag);
368 if (count != 3 || memcmp(tag,"\x6f\x80\x01",3) != 0)
369 ThrowReaderException(CorruptImageError,"CorruptImage");
371 num_pad_bytes = (size_t) (img_offset - TellBlob( image ));
372 while (num_pad_bytes-- != 0)
377 c=ReadBlobByte(image);
384 count=ReadBlob(image,sizeof(pdb_image.name),(unsigned char *) pdb_image.name);
385 if (count != sizeof(pdb_image.name))
386 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
387 pdb_image.version=ReadBlobByte(image);
388 pdb_image.type=(unsigned char) (ReadBlobByte(image));
389 pdb_image.reserved_1=ReadBlobMSBLong(image);
390 pdb_image.note=ReadBlobMSBLong(image);
391 pdb_image.x_last=(short) ReadBlobMSBShort(image);
392 pdb_image.y_last=(short) ReadBlobMSBShort(image);
393 pdb_image.reserved_2=ReadBlobMSBLong(image);
394 pdb_image.x_anchor=ReadBlobMSBShort(image);
395 pdb_image.y_anchor=ReadBlobMSBShort(image);
396 pdb_image.width=(short) ReadBlobMSBShort(image);
397 pdb_image.height=(short) ReadBlobMSBShort(image);
399 Initialize image structure.
401 image->columns=(size_t) pdb_image.width;
402 image->rows=(size_t) pdb_image.height;
404 image->storage_class=PseudoClass;
405 bits_per_pixel=pdb_image.type == 0 ? 2UL : pdb_image.type == 2 ? 4UL : 1UL;
407 if (AcquireImageColormap(image,one << bits_per_pixel,exception) == MagickFalse)
408 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
409 if (image_info->ping != MagickFalse)
411 (void) CloseBlob(image);
412 return(GetFirstImageInList(image));
414 status=SetImageExtent(image,image->columns,image->rows,exception);
415 if (status == MagickFalse)
416 return(DestroyImageList(image));
417 packets=(bits_per_pixel*image->columns+7)/8;
418 pixels=(unsigned char *) AcquireQuantumMemory(packets+257UL,image->rows*
420 if (pixels == (unsigned char *) NULL)
421 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
422 switch (pdb_image.version & 0x07)
426 image->compression=NoCompression;
427 count=(ssize_t) ReadBlob(image, packets * image -> rows, pixels);
432 image->compression=RLECompression;
433 if (!DecodeImage(image, pixels, packets * image -> rows))
434 ThrowReaderException( CorruptImageError, "RLEDecoderError" );
438 ThrowReaderException(CorruptImageError,
439 "UnrecognizedImageCompressionType" );
442 switch (bits_per_pixel)
450 Read 1-bit PDB image.
452 for (y=0; y < (ssize_t) image->rows; y++)
454 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
455 if (q == (Quantum *) NULL)
457 for (x=0; x < ((ssize_t) image->columns-7); x+=8)
459 for (bit=0; bit < 8; bit++)
461 index=(Quantum) (*p & (0x80 >> bit) ? 0x00 : 0x01);
462 SetPixelIndex(image,index,q);
463 q+=GetPixelChannels(image);
467 if (SyncAuthenticPixels(image,exception) == MagickFalse)
469 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
471 if (status == MagickFalse)
474 (void) SyncImage(image,exception);
480 Read 2-bit PDB image.
482 for (y=0; y < (ssize_t) image->rows; y++)
484 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
485 if (q == (Quantum *) NULL)
487 for (x=0; x < (ssize_t) image->columns-3; x+=4)
489 index=ConstrainColormapIndex(image,3UL-((*p >> 6) & 0x03),exception);
490 SetPixelIndex(image,index,q);
491 q+=GetPixelChannels(image);
492 index=ConstrainColormapIndex(image,3UL-((*p >> 4) & 0x03),exception);
493 SetPixelIndex(image,index,q);
494 q+=GetPixelChannels(image);
495 index=ConstrainColormapIndex(image,3UL-((*p >> 2) & 0x03),exception);
496 SetPixelIndex(image,index,q);
497 q+=GetPixelChannels(image);
498 index=ConstrainColormapIndex(image,3UL-((*p) & 0x03),exception);
499 SetPixelIndex(image,index,q);
501 q+=GetPixelChannels(image);
503 if (SyncAuthenticPixels(image,exception) == MagickFalse)
505 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
507 if (status == MagickFalse)
510 (void) SyncImage(image,exception);
516 Read 4-bit PDB image.
518 for (y=0; y < (ssize_t) image->rows; y++)
520 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
521 if (q == (Quantum *) NULL)
523 for (x=0; x < (ssize_t) image->columns-1; x+=2)
525 index=ConstrainColormapIndex(image,15UL-((*p >> 4) & 0x0f),exception);
526 SetPixelIndex(image,index,q);
527 q+=GetPixelChannels(image);
528 index=ConstrainColormapIndex(image,15UL-((*p) & 0x0f),exception);
529 SetPixelIndex(image,index,q);
531 q+=GetPixelChannels(image);
533 if (SyncAuthenticPixels(image,exception) == MagickFalse)
535 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
537 if (status == MagickFalse)
540 (void) SyncImage(image,exception);
544 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
546 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
547 if (EOFBlob(image) != MagickFalse)
548 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
550 if (pdb_info.number_records > 1)
564 num_pad_bytes = (size_t) (comment_offset - TellBlob( image ));
565 while (num_pad_bytes--) ReadBlobByte( image );
570 c=ReadBlobByte(image);
571 length=MagickPathExtent;
572 comment=AcquireString((char *) NULL);
573 for (p=comment; c != EOF; p++)
575 if ((size_t) (p-comment+MagickPathExtent) >= length)
579 length+=MagickPathExtent;
580 comment=(char *) ResizeQuantumMemory(comment,length+MagickPathExtent,
582 if (comment == (char *) NULL)
584 p=comment+strlen(comment);
587 c=ReadBlobByte(image);
590 if (comment == (char *) NULL)
591 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
592 (void) SetImageProperty(image,"comment",comment,exception);
593 comment=DestroyString(comment);
595 (void) CloseBlob(image);
596 return(GetFirstImageInList(image));
600 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
604 % R e g i s t e r P D B I m a g e %
608 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
610 % RegisterPDBImage() adds properties for the PDB image format to
611 % the list of supported formats. The properties include the image format
612 % tag, a method to read and/or write the format, whether the format
613 % supports the saving of more than one frame to the same file or blob,
614 % whether the format supports native in-memory I/O, and a brief
615 % description of the format.
617 % The format of the RegisterPDBImage method is:
619 % size_t RegisterPDBImage(void)
622 ModuleExport size_t RegisterPDBImage(void)
627 entry=AcquireMagickInfo("PDB","PDB","Palm Database ImageViewer Format");
628 entry->decoder=(DecodeImageHandler *) ReadPDBImage;
629 entry->encoder=(EncodeImageHandler *) WritePDBImage;
630 entry->magick=(IsImageFormatHandler *) IsPDB;
631 (void) RegisterMagickInfo(entry);
632 return(MagickImageCoderSignature);
636 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
640 % U n r e g i s t e r P D B I m a g e %
644 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
646 % UnregisterPDBImage() removes format registrations made by the
647 % PDB module from the list of supported formats.
649 % The format of the UnregisterPDBImage method is:
651 % UnregisterPDBImage(void)
654 ModuleExport void UnregisterPDBImage(void)
656 (void) UnregisterMagickInfo("PDB");
660 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
664 % W r i t e P D B I m a g e %
668 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
670 % WritePDBImage() writes an image
672 % The format of the WritePDBImage method is:
674 % MagickBooleanType WritePDBImage(const ImageInfo *image_info,
675 % Image *image,ExceptionInfo *exception)
677 % A description of each parameter follows.
679 % o image_info: the image info.
681 % o image: The image.
683 % o exception: return any errors or warnings in this structure.
687 static unsigned char *EncodeRLE(unsigned char *destination,
688 unsigned char *source,size_t literal,size_t repeat)
691 *destination++=(unsigned char) (literal-1);
692 (void) CopyMagickMemory(destination,source,literal);
693 destination+=literal;
696 *destination++=(unsigned char) (0x80 | (repeat-1));
697 *destination++=source[literal];
702 static MagickBooleanType WritePDBImage(const ImageInfo *image_info,Image *image,
703 ExceptionInfo *exception)
723 register const Quantum
729 register unsigned char
748 Open output image file.
750 assert(image_info != (const ImageInfo *) NULL);
751 assert(image_info->signature == MagickCoreSignature);
752 assert(image != (Image *) NULL);
753 assert(image->signature == MagickCoreSignature);
754 if (image->debug != MagickFalse)
755 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
756 assert(exception != (ExceptionInfo *) NULL);
757 assert(exception->signature == MagickCoreSignature);
758 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
759 if (status == MagickFalse)
761 (void) TransformImageColorspace(image,sRGBColorspace,exception);
762 if (SetImageMonochrome(image,exception) != MagickFalse) {
764 } else if (image->colors <= 4) {
766 } else if (image->colors <= 8) {
771 (void) ResetMagickMemory(&pdb_info,0,sizeof(pdb_info));
772 (void) CopyMagickString(pdb_info.name,image_info->filename,
773 sizeof(pdb_info.name));
774 pdb_info.attributes=0;
776 pdb_info.create_time=time(NULL);
777 pdb_info.modify_time=pdb_info.create_time;
778 pdb_info.archive_time=0;
779 pdb_info.modify_number=0;
780 pdb_info.application_info=0;
781 pdb_info.sort_info=0;
782 (void) CopyMagickMemory(pdb_info.type,"vIMG",4);
783 (void) CopyMagickMemory(pdb_info.id,"View",4);
785 pdb_info.next_record=0;
786 comment=GetImageProperty(image,"comment",exception);
787 pdb_info.number_records=(comment == (const char *) NULL ? 1 : 2);
788 (void) WriteBlob(image,sizeof(pdb_info.name),(unsigned char *) pdb_info.name);
789 (void) WriteBlobMSBShort(image,(unsigned short) pdb_info.attributes);
790 (void) WriteBlobMSBShort(image,(unsigned short) pdb_info.version);
791 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.create_time);
792 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.modify_time);
793 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.archive_time);
794 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.modify_number);
795 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.application_info);
796 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.sort_info);
797 (void) WriteBlob(image,4,(unsigned char *) pdb_info.type);
798 (void) WriteBlob(image,4,(unsigned char *) pdb_info.id);
799 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.seed);
800 (void) WriteBlobMSBLong(image,(unsigned int) pdb_info.next_record);
801 (void) WriteBlobMSBShort(image,(unsigned short) pdb_info.number_records);
802 (void) CopyMagickString(pdb_image.name,pdb_info.name,sizeof(pdb_image.name));
803 pdb_image.version=1; /* RLE Compressed */
804 switch (bits_per_pixel)
806 case 1: pdb_image.type=(unsigned char) 0xff; break; /* monochrome */
807 case 2: pdb_image.type=(unsigned char) 0x00; break; /* 2 bit gray */
808 default: pdb_image.type=(unsigned char) 0x02; /* 4 bit gray */
810 pdb_image.reserved_1=0;
814 pdb_image.reserved_2=0;
815 pdb_image.x_anchor=(unsigned short) 0xffff;
816 pdb_image.y_anchor=(unsigned short) 0xffff;
817 pdb_image.width=(short) image->columns;
818 if (image->columns % 16)
819 pdb_image.width=(short) (16*(image->columns/16+1));
820 pdb_image.height=(short) image->rows;
821 packets=((bits_per_pixel*image->columns+7)/8);
822 runlength=(unsigned char *) AcquireQuantumMemory(9UL*packets,
823 image->rows*sizeof(*runlength));
824 if (runlength == (unsigned char *) NULL)
825 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
826 buffer=(unsigned char *) AcquireQuantumMemory(512,sizeof(*buffer));
827 if (buffer == (unsigned char *) NULL)
828 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
829 packet_size=(size_t) (image->depth > 8 ? 2 : 1);
830 scanline=(unsigned char *) AcquireQuantumMemory(image->columns,packet_size*
832 if (scanline == (unsigned char *) NULL)
833 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
834 if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
835 (void) TransformImageColorspace(image,sRGBColorspace,exception);
837 Convert to GRAY raster scanline.
839 quantum_info=AcquireQuantumInfo(image_info,image);
840 if (quantum_info == (QuantumInfo *) NULL)
841 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
842 status=SetQuantumDepth(image,quantum_info,image->depth > 8 ? 16 : 8);
843 bits=8/(int) bits_per_pixel-1; /* start at most significant bits */
848 for (y=0; y < (ssize_t) image->rows; y++)
850 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
851 if (p == (const Quantum *) NULL)
853 (void) ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
854 GrayQuantum,scanline,exception);
855 for (x=0; x < (ssize_t) pdb_image.width; x++)
857 if (x < (ssize_t) image->columns)
858 buffer[literal+repeat]|=(0xff-scanline[x*packet_size]) >>
859 (8-bits_per_pixel) << bits*bits_per_pixel;
863 if (((literal+repeat) > 0) &&
864 (buffer[literal+repeat] == buffer[literal+repeat-1]))
874 q=EncodeRLE(q,buffer,literal,repeat);
885 q=EncodeRLE(q,buffer,literal,repeat);
886 buffer[0]=buffer[literal+repeat];
893 q=EncodeRLE(q,buffer,(literal < 0x80 ? literal : 0x80),0);
894 (void) CopyMagickMemory(buffer,buffer+literal+repeat,0x80);
898 bits=8/(int) bits_per_pixel-1;
899 buffer[literal+repeat]=0x00;
902 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
904 if (status == MagickFalse)
907 q=EncodeRLE(q,buffer,literal,repeat);
908 scanline=(unsigned char *) RelinquishMagickMemory(scanline);
909 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
910 quantum_info=DestroyQuantumInfo(quantum_info);
912 Write the Image record header.
914 (void) WriteBlobMSBLong(image,(unsigned int)
915 (TellBlob(image)+8*pdb_info.number_records));
916 (void) WriteBlobByte(image,0x40);
917 (void) WriteBlobByte(image,0x6f);
918 (void) WriteBlobByte(image,0x80);
919 (void) WriteBlobByte(image,0);
920 if (pdb_info.number_records > 1)
923 Write the comment record header.
925 (void) WriteBlobMSBLong(image,(unsigned int) (TellBlob(image)+8+58+q-
927 (void) WriteBlobByte(image,0x40);
928 (void) WriteBlobByte(image,0x6f);
929 (void) WriteBlobByte(image,0x80);
930 (void) WriteBlobByte(image,1);
933 Write the Image data.
935 (void) WriteBlob(image,sizeof(pdb_image.name),(unsigned char *)
937 (void) WriteBlobByte(image,(unsigned char) pdb_image.version);
938 (void) WriteBlobByte(image,pdb_image.type);
939 (void) WriteBlobMSBLong(image,(unsigned int) pdb_image.reserved_1);
940 (void) WriteBlobMSBLong(image,(unsigned int) pdb_image.note);
941 (void) WriteBlobMSBShort(image,(unsigned short) pdb_image.x_last);
942 (void) WriteBlobMSBShort(image,(unsigned short) pdb_image.y_last);
943 (void) WriteBlobMSBLong(image,(unsigned int) pdb_image.reserved_2);
944 (void) WriteBlobMSBShort(image,pdb_image.x_anchor);
945 (void) WriteBlobMSBShort(image,pdb_image.y_anchor);
946 (void) WriteBlobMSBShort(image,(unsigned short) pdb_image.width);
947 (void) WriteBlobMSBShort(image,(unsigned short) pdb_image.height);
948 (void) WriteBlob(image,(size_t) (q-runlength),runlength);
949 runlength=(unsigned char *) RelinquishMagickMemory(runlength);
950 if (pdb_info.number_records > 1)
951 (void) WriteBlobString(image,comment);
952 (void) CloseBlob(image);