/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % PPPP AAA L M M % % P P A A L MM MM % % PPPP AAAAA L M M M % % P A A L M M % % P A A LLLLL M M % % % % % % Read/Write Palm Pixmap. % % % % % % Software Design % % Christopher R. Hawks % % December 2001 % % % % Copyright 1999-2004 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 % % % % https://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. % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Based on pnmtopalm by Bill Janssen and ppmtobmp by Ian Goldberg. % */ /* Include declarations. */ #include "magick/studio.h" #include "magick/attribute.h" #include "magick/blob.h" #include "magick/blob-private.h" #include "magick/cache.h" #include "magick/color.h" #include "magick/colormap.h" #include "magick/colormap-private.h" #include "magick/color-private.h" #include "magick/colorspace.h" #include "magick/colorspace-private.h" #include "magick/constitute.h" #include "magick/exception.h" #include "magick/histogram.h" #include "magick/image.h" #include "magick/list.h" #include "magick/magick.h" #include "magick/memory_.h" #include "magick/monitor.h" #include "magick/monitor-private.h" #include "magick/paint.h" #include "magick/pixel-accessor.h" #include "magick/pixel-private.h" #include "magick/property.h" #include "magick/quantize.h" #include "magick/quantum-private.h" #include "magick/static.h" #include "magick/string_.h" #include "magick/module.h" #include "magick/utility.h" /* Define declarations. */ #define PALM_IS_COMPRESSED_FLAG 0x8000 #define PALM_HAS_COLORMAP_FLAG 0x4000 #define PALM_HAS_FOUR_BYTE_FIELD 0x0200 #define PALM_HAS_TRANSPARENCY_FLAG 0x2000 #define PALM_IS_INDIRECT 0x1000 #define PALM_IS_FOR_SCREEN 0x0800 #define PALM_IS_DIRECT_COLOR 0x0400 #define PALM_COMPRESSION_SCANLINE 0x00 #define PALM_COMPRESSION_RLE 0x01 #define PALM_COMPRESSION_NONE 0xFF /* The 256 color system palette for Palm Computing Devices. */ static const unsigned char PalmPalette[256][3] = { {255, 255,255}, {255, 204,255}, {255, 153,255}, {255, 102,255}, {255, 51,255}, {255, 0,255}, {255, 255,204}, {255, 204,204}, {255, 153,204}, {255, 102,204}, {255, 51,204}, {255, 0,204}, {255, 255,153}, {255, 204,153}, {255, 153,153}, {255, 102,153}, {255, 51,153}, {255, 0,153}, {204, 255,255}, {204, 204,255}, {204, 153,255}, {204, 102,255}, {204, 51,255}, {204, 0,255}, {204, 255,204}, {204, 204,204}, {204, 153,204}, {204, 102,204}, {204, 51,204}, {204, 0,204}, {204, 255,153}, {204, 204,153}, {204, 153,153}, {204, 102,153}, {204, 51,153}, {204, 0,153}, {153, 255,255}, {153, 204,255}, {153, 153,255}, {153, 102,255}, {153, 51,255}, {153, 0,255}, {153, 255,204}, {153, 204,204}, {153, 153,204}, {153, 102,204}, {153, 51,204}, {153, 0,204}, {153, 255,153}, {153, 204,153}, {153, 153,153}, {153, 102,153}, {153, 51,153}, {153, 0,153}, {102, 255,255}, {102, 204,255}, {102, 153,255}, {102, 102,255}, {102, 51,255}, {102, 0,255}, {102, 255,204}, {102, 204,204}, {102, 153,204}, {102, 102,204}, {102, 51,204}, {102, 0,204}, {102, 255,153}, {102, 204,153}, {102, 153,153}, {102, 102,153}, {102, 51,153}, {102, 0,153}, { 51, 255,255}, { 51, 204,255}, { 51, 153,255}, { 51, 102,255}, { 51, 51,255}, { 51, 0,255}, { 51, 255,204}, { 51, 204,204}, { 51, 153,204}, { 51, 102,204}, { 51, 51,204}, { 51, 0,204}, { 51, 255,153}, { 51, 204,153}, { 51, 153,153}, { 51, 102,153}, { 51, 51,153}, { 51, 0,153}, { 0, 255,255}, { 0, 204,255}, { 0, 153,255}, { 0, 102,255}, { 0, 51,255}, { 0, 0,255}, { 0, 255,204}, { 0, 204,204}, { 0, 153,204}, { 0, 102,204}, { 0, 51,204}, { 0, 0,204}, { 0, 255,153}, { 0, 204,153}, { 0, 153,153}, { 0, 102,153}, { 0, 51,153}, { 0, 0,153}, {255, 255,102}, {255, 204,102}, {255, 153,102}, {255, 102,102}, {255, 51,102}, {255, 0,102}, {255, 255, 51}, {255, 204, 51}, {255, 153, 51}, {255, 102, 51}, {255, 51, 51}, {255, 0, 51}, {255, 255, 0}, {255, 204, 0}, {255, 153, 0}, {255, 102, 0}, {255, 51, 0}, {255, 0, 0}, {204, 255,102}, {204, 204,102}, {204, 153,102}, {204, 102,102}, {204, 51,102}, {204, 0,102}, {204, 255, 51}, {204, 204, 51}, {204, 153, 51}, {204, 102, 51}, {204, 51, 51}, {204, 0, 51}, {204, 255, 0}, {204, 204, 0}, {204, 153, 0}, {204, 102, 0}, {204, 51, 0}, {204, 0, 0}, {153, 255,102}, {153, 204,102}, {153, 153,102}, {153, 102,102}, {153, 51,102}, {153, 0,102}, {153, 255, 51}, {153, 204, 51}, {153, 153, 51}, {153, 102, 51}, {153, 51, 51}, {153, 0, 51}, {153, 255, 0}, {153, 204, 0}, {153, 153, 0}, {153, 102, 0}, {153, 51, 0}, {153, 0, 0}, {102, 255,102}, {102, 204,102}, {102, 153,102}, {102, 102,102}, {102, 51,102}, {102, 0,102}, {102, 255, 51}, {102, 204, 51}, {102, 153, 51}, {102, 102, 51}, {102, 51, 51}, {102, 0, 51}, {102, 255, 0}, {102, 204, 0}, {102, 153, 0}, {102, 102, 0}, {102, 51, 0}, {102, 0, 0}, { 51, 255,102}, { 51, 204,102}, { 51, 153,102}, { 51, 102,102}, { 51, 51,102}, { 51, 0,102}, { 51, 255, 51}, { 51, 204, 51}, { 51, 153, 51}, { 51, 102, 51}, { 51, 51, 51}, { 51, 0, 51}, { 51, 255, 0}, { 51, 204, 0}, { 51, 153, 0}, { 51, 102, 0}, { 51, 51, 0}, { 51, 0, 0}, { 0, 255,102}, { 0, 204,102}, { 0, 153,102}, { 0, 102,102}, { 0, 51,102}, { 0, 0,102}, { 0, 255, 51}, { 0, 204, 51}, { 0, 153, 51}, { 0, 102, 51}, { 0, 51, 51}, { 0, 0, 51}, { 0, 255, 0}, { 0, 204, 0}, { 0, 153, 0}, { 0, 102, 0}, { 0, 51, 0}, { 17, 17, 17}, { 34, 34, 34}, { 68, 68, 68}, { 85, 85, 85}, {119, 119,119}, {136, 136,136}, {170, 170,170}, {187, 187,187}, {221, 221,221}, {238, 238,238}, {192, 192,192}, {128, 0, 0}, {128, 0,128}, { 0, 128, 0}, { 0, 128,128}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0} }; /* Forward declarations. */ static MagickBooleanType WritePALMImage(const ImageInfo *,Image *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % F i n d C o l o r % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % FindColor() returns the index of the matching entry from PalmPalette for a % given PixelPacket. % % The format of the FindColor method is: % % int FindColor(PixelPacket *pixel) % % A description of each parameter follows: % % o int: the index of the matching color or -1 if not found/ % % o pixel: a pointer to the PixelPacket to be matched. % */ static ssize_t FindColor(PixelPacket *pixel) { ssize_t i; for (i=0; i < 256; i++) if (ScaleQuantumToChar(GetPixelRed(pixel)) == PalmPalette[i][0] && ScaleQuantumToChar(GetPixelGreen(pixel)) == PalmPalette[i][1] && ScaleQuantumToChar(GetPixelBlue(pixel)) == PalmPalette[i][2]) return(i); return(-1); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d P A L M I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadPALMImage() reads an image of raw bites in LSB order 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 ReadPALMImage method is: % % Image *ReadPALMImage(const ImageInfo *image_info, % ExceptionInfo *exception) % % A description of each parameter follows: % % o image_info: Specifies a pointer to an ImageInfo structure. % % o exception: return any errors or warnings in this structure. % */ static Image *ReadPALMImage(const ImageInfo *image_info, ExceptionInfo *exception) { Image *image; IndexPacket index; MagickBooleanType status; MagickOffsetType totalOffset, seekNextDepth; MagickPixelPacket transpix; IndexPacket *indexes; ssize_t i, x; PixelPacket *q; size_t bytes_per_row, bits_per_pixel, extent, flags, version, nextDepthOffset, transparentIndex, compressionType, byte, mask, redbits, greenbits, bluebits, one, pad, size, bit; ssize_t count, y; unsigned char *last_row, *one_row, *ptr; unsigned short color16; /* 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); status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); if (status == MagickFalse) { (void) DestroyImageList(image); return((Image *) NULL); } totalOffset=0; do { image->columns=ReadBlobMSBShort(image); image->rows=ReadBlobMSBShort(image); if (EOFBlob(image) != MagickFalse) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); if ((image->columns == 0) || (image->rows == 0)) ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); status=SetImageExtent(image,image->columns,image->rows); if (status == MagickFalse) { InheritException(exception,&image->exception); return(DestroyImageList(image)); } (void) SetImageBackgroundColor(image); bytes_per_row=ReadBlobMSBShort(image); flags=ReadBlobMSBShort(image); bits_per_pixel=(size_t) ReadBlobByte(image); if ((bits_per_pixel != 1) && (bits_per_pixel != 2) && (bits_per_pixel != 4) && (bits_per_pixel != 8) && (bits_per_pixel != 16)) ThrowReaderException(CorruptImageError,"UnsupportedBitsPerPixel"); version=(size_t) ReadBlobByte(image); if ((version != 0) && (version != 1) && (version != 2)) ThrowReaderException(CorruptImageError,"FileFormatVersionMismatch"); nextDepthOffset=(size_t) ReadBlobMSBShort(image); transparentIndex=(size_t) ReadBlobByte(image); compressionType=(size_t) ReadBlobByte(image); if ((compressionType != PALM_COMPRESSION_NONE) && (compressionType != PALM_COMPRESSION_SCANLINE ) && (compressionType != PALM_COMPRESSION_RLE)) ThrowReaderException(CorruptImageError,"UnrecognizedImageCompression"); pad=ReadBlobMSBShort(image); (void) pad; /* Initialize image colormap. */ one=1; if ((bits_per_pixel < 16) && (AcquireImageColormap(image,one << bits_per_pixel) == MagickFalse)) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); GetMagickPixelPacket(image,&transpix); if (bits_per_pixel == 16) /* Direct Color */ { redbits=(size_t) ReadBlobByte(image); /* # of bits of red */ (void) redbits; greenbits=(size_t) ReadBlobByte(image); /* # of bits of green */ (void) greenbits; bluebits=(size_t) ReadBlobByte(image); /* # of bits of blue */ (void) bluebits; ReadBlobByte(image); /* reserved by Palm */ ReadBlobByte(image); /* reserved by Palm */ transpix.red=(MagickRealType) (QuantumRange*ReadBlobByte(image)/31); transpix.green=(MagickRealType) (QuantumRange*ReadBlobByte(image)/63); transpix.blue=(MagickRealType) (QuantumRange*ReadBlobByte(image)/31); } if (bits_per_pixel == 8) { IndexPacket index; if (flags & PALM_HAS_COLORMAP_FLAG) { count=(ssize_t) ReadBlobMSBShort(image); for (i=0; i < (ssize_t) count; i++) { ReadBlobByte(image); index=ConstrainColormapIndex(image,(ssize_t) (255-i)); image->colormap[(int) index].red=ScaleCharToQuantum( (unsigned char) ReadBlobByte(image)); image->colormap[(int) index].green=ScaleCharToQuantum( (unsigned char) ReadBlobByte(image)); image->colormap[(int) index].blue=ScaleCharToQuantum( (unsigned char) ReadBlobByte(image)); } } else for (i=0; i < (ssize_t) (1L << bits_per_pixel); i++) { index=ConstrainColormapIndex(image,(ssize_t) (255-i)); image->colormap[(int) index].red=ScaleCharToQuantum( PalmPalette[i][0]); image->colormap[(int) index].green=ScaleCharToQuantum( PalmPalette[i][1]); image->colormap[(int) index].blue=ScaleCharToQuantum( PalmPalette[i][2]); } } if (flags & PALM_IS_COMPRESSED_FLAG) size=ReadBlobMSBShort(image); (void) size; image->storage_class=DirectClass; if (bits_per_pixel < 16) { image->storage_class=PseudoClass; image->depth=8; } if (image_info->ping != MagickFalse) { (void) CloseBlob(image); return(image); } status=SetImageExtent(image,image->columns,image->rows); if (status == MagickFalse) { InheritException(exception,&image->exception); return(DestroyImageList(image)); } extent=MagickMax(bytes_per_row,2*image->columns); one_row=(unsigned char *) AcquireQuantumMemory(extent,sizeof(*one_row)); if (one_row == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); (void) memset(one_row,0,extent*sizeof(*one_row)); last_row=(unsigned char *) NULL; if (compressionType == PALM_COMPRESSION_SCANLINE) { last_row=(unsigned char *) AcquireQuantumMemory(MagickMax(bytes_per_row, 2*image->columns),sizeof(*last_row)); if (last_row == (unsigned char *) NULL) { one_row=(unsigned char *) RelinquishMagickMemory(one_row); ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } (void) memset(last_row,0,MagickMax(bytes_per_row,2*image->columns)* sizeof(*last_row)); } mask=(size_t) (1U << bits_per_pixel)-1; for (y=0; y < (ssize_t) image->rows; y++) { if ((flags & PALM_IS_COMPRESSED_FLAG) == 0) { /* TODO move out of loop! */ image->compression=NoCompression; count=ReadBlob(image,bytes_per_row,one_row); if (count != (ssize_t) bytes_per_row) break; } else { if (compressionType == PALM_COMPRESSION_RLE) { /* TODO move out of loop! */ image->compression=RLECompression; for (i=0; i < (ssize_t) bytes_per_row; ) { count=(ssize_t) ReadBlobByte(image); if (count < 0) break; count=MagickMin(count,(ssize_t) bytes_per_row-i); byte=(size_t) ReadBlobByte(image); (void) memset(one_row+i,(int) byte,(size_t) count); i+=count; } } else if (compressionType == PALM_COMPRESSION_SCANLINE) { size_t one; /* TODO move out of loop! */ one=1; image->compression=FaxCompression; for (i=0; i < (ssize_t) bytes_per_row; i+=8) { count=(ssize_t) ReadBlobByte(image); if (count < 0) break; byte=(size_t) MagickMin((ssize_t) bytes_per_row-i,8); for (bit=0; bit < byte; bit++) { if ((y == 0) || (count & (one << (7 - bit)))) one_row[i+bit]=(unsigned char) ReadBlobByte(image); else one_row[i+bit]=last_row[i+bit]; } } (void) memcpy(last_row, one_row, bytes_per_row); } } ptr=one_row; q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (PixelPacket *) NULL) break; indexes=GetAuthenticIndexQueue(image); if (bits_per_pixel == 16) { if (image->columns > (2*bytes_per_row)) { one_row=(unsigned char *) RelinquishMagickMemory(one_row); if (compressionType == PALM_COMPRESSION_SCANLINE) last_row=(unsigned char *) RelinquishMagickMemory(last_row); ThrowReaderException(CorruptImageError,"CorruptImage"); } for (x=0; x < (ssize_t) image->columns; x++) { color16=(*ptr++ << 8); color16|=(*ptr++); SetPixelRed(q,(QuantumRange*((color16 >> 11) & 0x1f))/0x1f); SetPixelGreen(q,(QuantumRange*((color16 >> 5) & 0x3f))/0x3f); SetPixelBlue(q,(QuantumRange*((color16 >> 0) & 0x1f))/0x1f); SetPixelOpacity(q,OpaqueOpacity); q++; } } else { bit=8-bits_per_pixel; for (x=0; x < (ssize_t) image->columns; x++) { if ((size_t) (ptr-one_row) >= bytes_per_row) { one_row=(unsigned char *) RelinquishMagickMemory(one_row); if (compressionType == PALM_COMPRESSION_SCANLINE) last_row=(unsigned char *) RelinquishMagickMemory(last_row); ThrowReaderException(CorruptImageError,"CorruptImage"); } index=(IndexPacket) (mask-(((*ptr) & (mask << bit)) >> bit)); SetPixelIndex(indexes+x,index); SetPixelRGBO(q,image->colormap+(ssize_t) index); if (bit) bit-=bits_per_pixel; else { ptr++; bit=8-bits_per_pixel; } q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } } if (flags & PALM_HAS_TRANSPARENCY_FLAG) { IndexPacket index=ConstrainColormapIndex(image,(mask-transparentIndex)); if (bits_per_pixel != 16) SetMagickPixelPacket(image,image->colormap+(ssize_t) index, (const IndexPacket *) NULL,&transpix); (void) TransparentPaintImage(image,&transpix,(Quantum) TransparentOpacity,MagickFalse); } one_row=(unsigned char *) RelinquishMagickMemory(one_row); if (compressionType == PALM_COMPRESSION_SCANLINE) last_row=(unsigned char *) RelinquishMagickMemory(last_row); if (EOFBlob(image) != MagickFalse) { ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", image->filename); break; } /* Proceed to next image. Copied from coders/pnm.c */ if (image_info->number_scenes != 0) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; if (nextDepthOffset != 0) { /* Skip to next image. */ totalOffset+=(MagickOffsetType) (nextDepthOffset*4); if (totalOffset >= (MagickOffsetType) GetBlobSize(image)) ThrowReaderException(CorruptImageError,"ImproperImageHeader") else seekNextDepth=SeekBlob(image,totalOffset,SEEK_SET); if (seekNextDepth != totalOffset) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); /* Allocate next image structure. Copied from coders/pnm.c */ AcquireNextImage(image_info,image); if (GetNextImageInList(image) == (Image *) NULL) { status=MagickFalse; break; } image=SyncNextImageInList(image); status=SetImageProgress(image,LoadImagesTag,TellBlob(image), GetBlobSize(image)); if (status == MagickFalse) break; } } while (nextDepthOffset != 0); (void) CloseBlob(image); if (status == MagickFalse) return(DestroyImageList(image)); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r P A L M I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterPALMImage() adds properties for the PALM 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 RegisterPALMImage method is: % % size_t RegisterPALMImage(void) % */ ModuleExport size_t RegisterPALMImage(void) { MagickInfo *entry; entry=SetMagickInfo("PALM"); entry->decoder=(DecodeImageHandler *) ReadPALMImage; entry->encoder=(EncodeImageHandler *) WritePALMImage; entry->seekable_stream=MagickTrue; entry->description=ConstantString("Palm pixmap"); entry->magick_module=ConstantString("PALM"); (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r P A L M I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % UnregisterPALMImage() removes format registrations made by the PALM % module from the list of supported formats. % % The format of the UnregisterPALMImage method is: % % UnregisterPALMImage(void) % */ ModuleExport void UnregisterPALMImage(void) { (void) UnregisterMagickInfo("PALM"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e P A L M I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WritePALMImage() writes an image of raw bits in LSB order to a file. % % The format of the WritePALMImage method is: % % MagickBooleanType WritePALMImage(const ImageInfo *image_info, % Image *image) % % A description of each parameter follows. % % o image_info: Specifies a pointer to an ImageInfo structure. % % o image: A pointer to a Image structure. % */ static MagickBooleanType WritePALMImage(const ImageInfo *image_info, Image *image) { int bit; ExceptionInfo *exception; MagickBooleanType status; MagickOffsetType currentOffset, offset, scene; MagickSizeType cc; PixelPacket transpix; QuantizeInfo *quantize_info; IndexPacket *indexes; ssize_t x; PixelPacket *p; ssize_t y; size_t count, bits_per_pixel, bytes_per_row, imageListLength, nextDepthOffset, one; unsigned char byte, color, *last_row, *one_row, *ptr, version; unsigned int transparentIndex; unsigned short color16, flags; /* 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); exception=AcquireExceptionInfo(); status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); if (status == MagickFalse) return(status); quantize_info=AcquireQuantizeInfo(image_info); flags=0; currentOffset=0; transparentIndex=0; transpix.red=0; transpix.green=0; transpix.blue=0; transpix.opacity=0; one=1; version=0; scene=0; imageListLength=GetImageListLength(image); do { (void) TransformImageColorspace(image,sRGBColorspace); count=GetNumberColors(image,NULL,exception); for (bits_per_pixel=1; (one << bits_per_pixel) < count; bits_per_pixel*=2) ; if (bits_per_pixel > 16) bits_per_pixel=16; else if (bits_per_pixel < 16) (void) TransformImageColorspace(image,image->colorspace); if (bits_per_pixel < 8) { (void) TransformImageColorspace(image,GRAYColorspace); (void) SetImageType(image,PaletteType); (void) SortColormapByIntensity(image); } if ((image->storage_class == PseudoClass) && (image->colors > 256)) (void) SetImageStorageClass(image,DirectClass); if (image->storage_class == PseudoClass) flags|=PALM_HAS_COLORMAP_FLAG; else flags|=PALM_IS_DIRECT_COLOR; (void) WriteBlobMSBShort(image,(unsigned short) image->columns); /* width */ (void) WriteBlobMSBShort(image,(unsigned short) image->rows); /* height */ bytes_per_row=((image->columns+(16/bits_per_pixel-1))/(16/ bits_per_pixel))*2; (void) WriteBlobMSBShort(image,(unsigned short) bytes_per_row); if ((image_info->compression == RLECompression) || (image_info->compression == FaxCompression)) flags|=PALM_IS_COMPRESSED_FLAG; (void) WriteBlobMSBShort(image, flags); (void) WriteBlobByte(image,(unsigned char) bits_per_pixel); if (bits_per_pixel > 1) version=1; if ((image_info->compression == RLECompression) || (image_info->compression == FaxCompression)) version=2; (void) WriteBlobByte(image,version); (void) WriteBlobMSBShort(image,0); /* nextDepthOffset */ (void) WriteBlobByte(image,(unsigned char) transparentIndex); if (image_info->compression == RLECompression) (void) WriteBlobByte(image,PALM_COMPRESSION_RLE); else if (image_info->compression == FaxCompression) (void) WriteBlobByte(image,PALM_COMPRESSION_SCANLINE); else (void) WriteBlobByte(image,PALM_COMPRESSION_NONE); (void) WriteBlobMSBShort(image,0); /* reserved */ offset=16; if (bits_per_pixel == 16) { (void) WriteBlobByte(image,5); /* # of bits of red */ (void) WriteBlobByte(image,6); /* # of bits of green */ (void) WriteBlobByte(image,5); /* # of bits of blue */ (void) WriteBlobByte(image,0); /* reserved by Palm */ (void) WriteBlobMSBLong(image,0); /* no transparent color, YET */ offset+=8; } if (bits_per_pixel == 8) { if (flags & PALM_HAS_COLORMAP_FLAG) /* Write out colormap */ { quantize_info->dither=IsPaletteImage(image,&image->exception); quantize_info->number_colors=image->colors; (void) QuantizeImage(quantize_info,image); (void) WriteBlobMSBShort(image,(unsigned short) image->colors); for (count = 0; count < image->colors; count++) { (void) WriteBlobByte(image,(unsigned char) count); (void) WriteBlobByte(image,ScaleQuantumToChar( image->colormap[count].red)); (void) WriteBlobByte(image, ScaleQuantumToChar(image->colormap[count].green)); (void) WriteBlobByte(image, ScaleQuantumToChar(image->colormap[count].blue)); } offset+=2+count*4; } else /* Map colors to Palm standard colormap */ { Image *affinity_image; affinity_image=ConstituteImage(256,1,"RGB",CharPixel,&PalmPalette, exception); (void) TransformImageColorspace(affinity_image, affinity_image->colorspace); (void) RemapImage(quantize_info,image,affinity_image); for (y=0; y < (ssize_t) image->rows; y++) { p=GetAuthenticPixels(image,0,y,image->columns,1,exception); indexes=GetAuthenticIndexQueue(image); for (x=0; x < (ssize_t) image->columns; x++) SetPixelIndex(indexes+x,FindColor(&image->colormap[ (ssize_t) GetPixelIndex(indexes+x)])); } affinity_image=DestroyImage(affinity_image); } } if (flags & PALM_IS_COMPRESSED_FLAG) (void) WriteBlobMSBShort(image,0); /* fill in size later */ last_row=(unsigned char *) NULL; if (image_info->compression == FaxCompression) { last_row=(unsigned char *) AcquireQuantumMemory(bytes_per_row+256, sizeof(*last_row)); if (last_row == (unsigned char *) NULL) { quantize_info=DestroyQuantizeInfo(quantize_info); ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); } } one_row=(unsigned char *) AcquireQuantumMemory(bytes_per_row+256, sizeof(*one_row)); if (one_row == (unsigned char *) NULL) { if (last_row != (unsigned char *) NULL) last_row=(unsigned char *) RelinquishMagickMemory(last_row); quantize_info=DestroyQuantizeInfo(quantize_info); ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); } for (y=0; y < (ssize_t) image->rows; y++) { ptr=one_row; (void) memset(ptr,0,bytes_per_row); p=GetAuthenticPixels(image,0,y,image->columns,1,exception); if (p == (PixelPacket *) NULL) break; indexes=GetAuthenticIndexQueue(image); if (bits_per_pixel == 16) { for (x=0; x < (ssize_t) image->columns; x++) { color16=(unsigned short) ((((31*(ssize_t) GetPixelRed(p))/ (ssize_t) QuantumRange) << 11) | (((63*(ssize_t) GetPixelGreen(p))/(ssize_t) QuantumRange) << 5) | ((31*(ssize_t) GetPixelBlue(p))/(ssize_t) QuantumRange)); if (GetPixelOpacity(p) == (Quantum) TransparentOpacity) { transpix.red=GetPixelRed(p); transpix.green=GetPixelGreen(p); transpix.blue=GetPixelBlue(p); transpix.opacity=GetPixelOpacity(p); flags|=PALM_HAS_TRANSPARENCY_FLAG; } *ptr++=(unsigned char) ((color16 >> 8) & 0xff); *ptr++=(unsigned char) (color16 & 0xff); p++; } } else { byte=0x00; bit=(unsigned char) (8-bits_per_pixel); for (x=0; x < (ssize_t) image->columns; x++) { if (bits_per_pixel >= 8) color=(unsigned char) ((size_t) GetPixelIndex(indexes+x)); else color=(unsigned char) (GetPixelIndex(indexes+x)* ((one << bits_per_pixel)-1)/MagickMax(1*image->colors-1,1)); byte|=color << bit; if (bit != 0) bit-=(unsigned char) bits_per_pixel; else { *ptr++=byte; byte=0x00; bit=(unsigned char) (8-bits_per_pixel); } } if ((image->columns % (8/bits_per_pixel)) != 0) *ptr++=byte; } if (image_info->compression == RLECompression) { x=0; while (x < (ssize_t) bytes_per_row) { byte=one_row[x]; count=1; while ((one_row[++x] == byte) && (count < 255) && (x < (ssize_t) bytes_per_row)) count++; (void) WriteBlobByte(image,(unsigned char) count); (void) WriteBlobByte(image,(unsigned char) byte); } } else if (image_info->compression == FaxCompression) { char tmpbuf[8], *tptr; for (x=0; x < (ssize_t) bytes_per_row; x+=8) { tptr = tmpbuf; for (bit=0, byte=0; bit < (int) MagickMin(8L,(ssize_t) bytes_per_row-x); bit++) { if ((y == 0) || (last_row[x + bit] != one_row[x + bit])) { byte |= (1 << (7 - bit)); *tptr++ = (char) one_row[x + bit]; } } (void) WriteBlobByte(image, byte); (void) WriteBlob(image,tptr-tmpbuf,(unsigned char *) tmpbuf); } (void) memcpy(last_row,one_row,bytes_per_row); } else (void) WriteBlob(image,bytes_per_row,one_row); } if (flags & PALM_HAS_TRANSPARENCY_FLAG) { offset=SeekBlob(image,currentOffset+6,SEEK_SET); (void) WriteBlobMSBShort(image,flags); offset=SeekBlob(image,currentOffset+12,SEEK_SET); (void) WriteBlobByte(image,(unsigned char) transparentIndex); /* trans index */ } if (bits_per_pixel == 16) { offset=SeekBlob(image,currentOffset+20,SEEK_SET); (void) WriteBlobByte(image,0); /* reserved by Palm */ (void) WriteBlobByte(image,(unsigned char) ((31*transpix.red)/ QuantumRange)); (void) WriteBlobByte(image,(unsigned char) ((63*transpix.green)/ QuantumRange)); (void) WriteBlobByte(image,(unsigned char) ((31*transpix.blue)/ QuantumRange)); } if (flags & PALM_IS_COMPRESSED_FLAG) /* fill in size now */ { offset=SeekBlob(image,currentOffset+offset,SEEK_SET); (void) WriteBlobMSBShort(image,(unsigned short) (GetBlobSize(image)- currentOffset-offset)); } if (one_row != (unsigned char *) NULL) one_row=(unsigned char *) RelinquishMagickMemory(one_row); if (last_row != (unsigned char *) NULL) last_row=(unsigned char *) RelinquishMagickMemory(last_row); if (GetNextImageInList(image) == (Image *) NULL) break; /* padding to 4 byte word */ for (cc=(GetBlobSize(image)) % 4; cc > 0; cc--) (void) WriteBlobByte(image,0); /* write nextDepthOffset and return to end of image */ (void) SeekBlob(image,currentOffset+10,SEEK_SET); nextDepthOffset=(size_t) ((GetBlobSize(image)-currentOffset)/4); (void) WriteBlobMSBShort(image,(unsigned short) nextDepthOffset); currentOffset=(MagickOffsetType) GetBlobSize(image); (void) SeekBlob(image,currentOffset,SEEK_SET); image=SyncNextImageInList(image); status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength); if (status == MagickFalse) break; } while (image_info->adjoin != MagickFalse); quantize_info=DestroyQuantizeInfo(quantize_info); (void) CloseBlob(image); (void) DestroyExceptionInfo(exception); return(MagickTrue); }