| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % PPPP DDDD BBBB % |
| % P P D D B B % |
| % PPPP D D BBBB % |
| % P D D B B % |
| % P DDDD BBBB % |
| % % |
| % % |
| % Read/Write Palm Database ImageViewer Image Format % |
| % % |
| % Software Design % |
| % Cristy % |
| % July 1992 % |
| % % |
| % % |
| % Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization % |
| % dedicated to making software imaging solutions freely available. % |
| % % |
| % You may not use this file except in compliance with the License. You may % |
| % obtain a copy of the License at % |
| % % |
| % http://www.imagemagick.org/script/license.php % |
| % % |
| % Unless required by applicable law or agreed to in writing, software % |
| % distributed under the License is distributed on an "AS IS" BASIS, % |
| % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| % See the License for the specific language governing permissions and % |
| % limitations under the License. % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % |
| % 20071202 TS * rewrote RLE decoder - old version could cause buffer overflows |
| % * failure of RLE decoding now thows error RLEDecoderError |
| % * fixed bug in RLE decoding - now all rows are decoded, not just |
| % the first one |
| % * fixed bug in reader - record offsets now handled correctly |
| % * fixed bug in reader - only bits 0..2 indicate compression type |
| % * in writer: now using image color count instead of depth |
| */ |
| |
| /* |
| Include declarations. |
| */ |
| #include "MagickCore/studio.h" |
| #include "MagickCore/attribute.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/colormap-private.h" |
| #include "MagickCore/color-private.h" |
| #include "MagickCore/colormap.h" |
| #include "MagickCore/colorspace.h" |
| #include "MagickCore/colorspace-private.h" |
| #include "MagickCore/constitute.h" |
| #include "MagickCore/exception.h" |
| #include "MagickCore/exception-private.h" |
| #include "MagickCore/image.h" |
| #include "MagickCore/image-private.h" |
| #include "MagickCore/list.h" |
| #include "MagickCore/magick.h" |
| #include "MagickCore/memory_.h" |
| #include "MagickCore/monitor.h" |
| #include "MagickCore/monitor-private.h" |
| #include "MagickCore/pixel-accessor.h" |
| #include "MagickCore/property.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| |
| /* |
| Typedef declarations. |
| */ |
| typedef struct _PDBInfo |
| { |
| char |
| name[32]; |
| |
| short int |
| attributes, |
| version; |
| |
| size_t |
| create_time, |
| modify_time, |
| archive_time, |
| modify_number, |
| application_info, |
| sort_info; |
| |
| char |
| type[4], /* database type identifier "vIMG" */ |
| id[4]; /* database creator identifier "View" */ |
| |
| size_t |
| seed, |
| next_record; |
| |
| short int |
| number_records; |
| } PDBInfo; |
| |
| typedef struct _PDBImage |
| { |
| char |
| name[32], |
| version; |
| |
| size_t |
| reserved_1, |
| note; |
| |
| short int |
| x_last, |
| y_last; |
| |
| size_t |
| reserved_2; |
| |
| short int |
| width, |
| height; |
| |
| unsigned char |
| type; |
| |
| unsigned short |
| x_anchor, |
| y_anchor; |
| } PDBImage; |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WritePDBImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % D e c o d e I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % DecodeImage unpacks the packed image pixels into runlength-encoded |
| % pixel packets. |
| % |
| % The format of the DecodeImage method is: |
| % |
| % MagickBooleanType DecodeImage(Image *image,unsigned char *pixels, |
| % const size_t length) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the address of a structure of type Image. |
| % |
| % o pixels: The address of a byte (8 bits) array of pixel data created by |
| % the decoding process. |
| % |
| % o length: Number of bytes to read into buffer 'pixels'. |
| % |
| */ |
| static MagickBooleanType DecodeImage(Image *image, unsigned char *pixels, |
| const size_t length) |
| { |
| #define RLE_MODE_NONE -1 |
| #define RLE_MODE_COPY 0 |
| #define RLE_MODE_RUN 1 |
| |
| int data = 0, count = 0; |
| unsigned char *p; |
| int mode = RLE_MODE_NONE; |
| |
| for (p = pixels; p < pixels + length; p++) { |
| if (0 == count) { |
| data = ReadBlobByte( image ); |
| if (-1 == data) return MagickFalse; |
| if (data > 128) { |
| mode = RLE_MODE_RUN; |
| count = data - 128 + 1; |
| data = ReadBlobByte( image ); |
| if (-1 == data) return MagickFalse; |
| } else { |
| mode = RLE_MODE_COPY; |
| count = data + 1; |
| } |
| } |
| |
| if (RLE_MODE_COPY == mode) { |
| data = ReadBlobByte( image ); |
| if (-1 == data) return MagickFalse; |
| } |
| *p = (unsigned char)data; |
| --count; |
| } |
| return MagickTrue; |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s P D B % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsPDB() returns MagickTrue if the image format type, identified by the |
| % magick string, is PDB. |
| % |
| % The format of the ReadPDBImage method is: |
| % |
| % MagickBooleanType IsPDB(const unsigned char *magick,const size_t length) |
| % |
| % A description of each parameter follows: |
| % |
| % o magick: compare image format pattern against these bytes. |
| % |
| % o length: Specifies the length of the magick string. |
| % |
| */ |
| static MagickBooleanType IsPDB(const unsigned char *magick,const size_t length) |
| { |
| if (length < 68) |
| return(MagickFalse); |
| if (memcmp(magick+60,"vIMGView",8) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d P D B I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadPDBImage() reads an Pilot image file and returns it. It |
| % allocates the memory necessary for the new Image structure and returns a |
| % pointer to the new image. |
| % |
| % The format of the ReadPDBImage method is: |
| % |
| % Image *ReadPDBImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_info: the image info. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static Image *ReadPDBImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| unsigned char |
| attributes, |
| tag[3]; |
| |
| Image |
| *image; |
| |
| MagickBooleanType |
| status; |
| |
| PDBImage |
| pdb_image; |
| |
| PDBInfo |
| pdb_info; |
| |
| Quantum |
| index; |
| |
| register ssize_t |
| x; |
| |
| register Quantum |
| *q; |
| |
| register unsigned char |
| *p; |
| |
| size_t |
| bits_per_pixel, |
| num_pad_bytes, |
| one, |
| packets; |
| |
| ssize_t |
| count, |
| img_offset, |
| comment_offset = 0, |
| y; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| Open image file. |
| */ |
| assert(image_info != (const ImageInfo *) NULL); |
| assert(image_info->signature == MagickCoreSignature); |
| if (image_info->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| image_info->filename); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| image=AcquireImage(image_info,exception); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| /* |
| Determine if this a PDB image file. |
| */ |
| count=ReadBlob(image,sizeof(pdb_info.name),(unsigned char *) pdb_info.name); |
| if (count != sizeof(pdb_info.name)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| pdb_info.attributes=(short) ReadBlobMSBShort(image); |
| pdb_info.version=(short) ReadBlobMSBShort(image); |
| pdb_info.create_time=ReadBlobMSBLong(image); |
| pdb_info.modify_time=ReadBlobMSBLong(image); |
| pdb_info.archive_time=ReadBlobMSBLong(image); |
| pdb_info.modify_number=ReadBlobMSBLong(image); |
| pdb_info.application_info=ReadBlobMSBLong(image); |
| pdb_info.sort_info=ReadBlobMSBLong(image); |
| (void) ReadBlob(image,4,(unsigned char *) pdb_info.type); |
| (void) ReadBlob(image,4,(unsigned char *) pdb_info.id); |
| pdb_info.seed=ReadBlobMSBLong(image); |
| pdb_info.next_record=ReadBlobMSBLong(image); |
| pdb_info.number_records=(short) ReadBlobMSBShort(image); |
| if ((memcmp(pdb_info.type,"vIMG",4) != 0) || |
| (memcmp(pdb_info.id,"View",4) != 0)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if (pdb_info.next_record != 0) |
| ThrowReaderException(CoderError,"MultipleRecordListNotSupported"); |
| /* |
| Read record header. |
| */ |
| img_offset=(ssize_t) ReadBlobMSBSignedLong(image); |
| attributes=(unsigned char) ReadBlobByte(image); |
| (void) attributes; |
| count=ReadBlob(image,3,(unsigned char *) tag); |
| if (count != 3 || memcmp(tag,"\x6f\x80\x00",3) != 0) |
| ThrowReaderException(CorruptImageError,"CorruptImage"); |
| if (pdb_info.number_records > 1) |
| { |
| comment_offset=(ssize_t) ReadBlobMSBSignedLong(image); |
| attributes=(unsigned char) ReadBlobByte(image); |
| count=ReadBlob(image,3,(unsigned char *) tag); |
| if (count != 3 || memcmp(tag,"\x6f\x80\x01",3) != 0) |
| ThrowReaderException(CorruptImageError,"CorruptImage"); |
| } |
| num_pad_bytes = (size_t) (img_offset - TellBlob( image )); |
| while (num_pad_bytes-- != 0) |
| { |
| int |
| c; |
| |
| c=ReadBlobByte(image); |
| if (c == EOF) |
| break; |
| } |
| /* |
| Read image header. |
| */ |
| count=ReadBlob(image,sizeof(pdb_image.name),(unsigned char *) pdb_image.name); |
| if (count != sizeof(pdb_image.name)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| pdb_image.version=ReadBlobByte(image); |
| pdb_image.type=(unsigned char) (ReadBlobByte(image)); |
| pdb_image.reserved_1=ReadBlobMSBLong(image); |
| pdb_image.note=ReadBlobMSBLong(image); |
| pdb_image.x_last=(short) ReadBlobMSBShort(image); |
| pdb_image.y_last=(short) ReadBlobMSBShort(image); |
| pdb_image.reserved_2=ReadBlobMSBLong(image); |
| pdb_image.x_anchor=ReadBlobMSBShort(image); |
| pdb_image.y_anchor=ReadBlobMSBShort(image); |
| pdb_image.width=(short) ReadBlobMSBShort(image); |
| pdb_image.height=(short) ReadBlobMSBShort(image); |
| /* |
| Initialize image structure. |
| */ |
| image->columns=(size_t) pdb_image.width; |
| image->rows=(size_t) pdb_image.height; |
| image->depth=8; |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| image->storage_class=PseudoClass; |
| bits_per_pixel=pdb_image.type == 0 ? 2UL : pdb_image.type == 2 ? 4UL : 1UL; |
| one=1; |
| if (AcquireImageColormap(image,one << bits_per_pixel,exception) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| if (image_info->ping != MagickFalse) |
| { |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| packets=(bits_per_pixel*image->columns+7)/8; |
| pixels=(unsigned char *) AcquireQuantumMemory(packets+257UL,image->rows* |
| sizeof(*pixels)); |
| if (pixels == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| switch (pdb_image.version & 0x07) |
| { |
| case 0: |
| { |
| image->compression=NoCompression; |
| count=(ssize_t) ReadBlob(image, packets * image -> rows, pixels); |
| break; |
| } |
| case 1: |
| { |
| image->compression=RLECompression; |
| if (!DecodeImage(image, pixels, packets * image -> rows)) |
| ThrowReaderException( CorruptImageError, "RLEDecoderError" ); |
| break; |
| } |
| default: |
| ThrowReaderException(CorruptImageError, |
| "UnrecognizedImageCompressionType" ); |
| } |
| p=pixels; |
| switch (bits_per_pixel) |
| { |
| case 1: |
| { |
| int |
| bit; |
| |
| /* |
| Read 1-bit PDB image. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < ((ssize_t) image->columns-7); x+=8) |
| { |
| for (bit=0; bit < 8; bit++) |
| { |
| index=(Quantum) (*p & (0x80 >> bit) ? 0x00 : 0x01); |
| SetPixelIndex(image,index,q); |
| q+=GetPixelChannels(image); |
| } |
| p++; |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) SyncImage(image,exception); |
| break; |
| } |
| case 2: |
| { |
| /* |
| Read 2-bit PDB image. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns-3; x+=4) |
| { |
| index=ConstrainColormapIndex(image,3UL-((*p >> 6) & 0x03),exception); |
| SetPixelIndex(image,index,q); |
| q+=GetPixelChannels(image); |
| index=ConstrainColormapIndex(image,3UL-((*p >> 4) & 0x03),exception); |
| SetPixelIndex(image,index,q); |
| q+=GetPixelChannels(image); |
| index=ConstrainColormapIndex(image,3UL-((*p >> 2) & 0x03),exception); |
| SetPixelIndex(image,index,q); |
| q+=GetPixelChannels(image); |
| index=ConstrainColormapIndex(image,3UL-((*p) & 0x03),exception); |
| SetPixelIndex(image,index,q); |
| p++; |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) SyncImage(image,exception); |
| break; |
| } |
| case 4: |
| { |
| /* |
| Read 4-bit PDB image. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns-1; x+=2) |
| { |
| index=ConstrainColormapIndex(image,15UL-((*p >> 4) & 0x0f),exception); |
| SetPixelIndex(image,index,q); |
| q+=GetPixelChannels(image); |
| index=ConstrainColormapIndex(image,15UL-((*p) & 0x0f),exception); |
| SetPixelIndex(image,index,q); |
| p++; |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) SyncImage(image,exception); |
| break; |
| } |
| default: |
| 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; |
| |
| register char |
| *p; |
| |
| size_t |
| length; |
| |
| num_pad_bytes = (size_t) (comment_offset - TellBlob( image )); |
| while (num_pad_bytes--) ReadBlobByte( image ); |
| |
| /* |
| Read comment. |
| */ |
| c=ReadBlobByte(image); |
| length=MagickPathExtent; |
| comment=AcquireString((char *) NULL); |
| for (p=comment; c != EOF; p++) |
| { |
| if ((size_t) (p-comment+MagickPathExtent) >= length) |
| { |
| *p='\0'; |
| length<<=1; |
| length+=MagickPathExtent; |
| comment=(char *) ResizeQuantumMemory(comment,length+MagickPathExtent, |
| 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,exception); |
| 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=AcquireMagickInfo("PDB","PDB","Palm Database ImageViewer Format"); |
| entry->decoder=(DecodeImageHandler *) ReadPDBImage; |
| entry->encoder=(EncodeImageHandler *) WritePDBImage; |
| entry->magick=(IsImageFormatHandler *) IsPDB; |
| (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,ExceptionInfo *exception) |
| % |
| % A description of each parameter follows. |
| % |
| % o image_info: the image info. |
| % |
| % o image: The image. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| |
| 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) CopyMagickMemory(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, |
| ExceptionInfo *exception) |
| { |
| const char |
| *comment; |
| |
| int |
| bits; |
| |
| MagickBooleanType |
| status; |
| |
| PDBImage |
| pdb_image; |
| |
| PDBInfo |
| pdb_info; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| register const Quantum |
| *p; |
| |
| register ssize_t |
| x; |
| |
| register 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); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| (void) TransformImageColorspace(image,sRGBColorspace,exception); |
| if (SetImageMonochrome(image,exception) != MagickFalse) { |
| 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) ResetMagickMemory(&pdb_info,0,sizeof(pdb_info)); |
| (void) CopyMagickString(pdb_info.name,image_info->filename, |
| sizeof(pdb_info.name)); |
| pdb_info.attributes=0; |
| pdb_info.version=0; |
| pdb_info.create_time=time(NULL); |
| 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) CopyMagickMemory(pdb_info.type,"vIMG",4); |
| (void) CopyMagickMemory(pdb_info.id,"View",4); |
| pdb_info.seed=0; |
| pdb_info.next_record=0; |
| comment=GetImageProperty(image,"comment",exception); |
| 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); |
| runlength=(unsigned char *) AcquireQuantumMemory(9UL*packets, |
| image->rows*sizeof(*runlength)); |
| if (runlength == (unsigned char *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| buffer=(unsigned char *) AcquireQuantumMemory(512,sizeof(*buffer)); |
| if (buffer == (unsigned char *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| packet_size=(size_t) (image->depth > 8 ? 2: 1); |
| scanline=(unsigned char *) AcquireQuantumMemory(image->columns,packet_size* |
| sizeof(*scanline)); |
| if (scanline == (unsigned char *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse) |
| (void) TransformImageColorspace(image,sRGBColorspace,exception); |
| /* |
| Convert to GRAY raster scanline. |
| */ |
| quantum_info=AcquireQuantumInfo(image_info,image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| 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,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| (void) ExportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| GrayQuantum,scanline,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) CopyMagickMemory(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 (pdb_info.number_records > 1) |
| (void) WriteBlobString(image,comment); |
| (void) CloseBlob(image); |
| return(MagickTrue); |
| } |