| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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 "MagickCore/studio.h" |
| #include "MagickCore/attribute.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/color.h" |
| #include "MagickCore/colormap.h" |
| #include "MagickCore/colormap-private.h" |
| #include "MagickCore/color-private.h" |
| #include "MagickCore/colorspace.h" |
| #include "MagickCore/colorspace-private.h" |
| #include "MagickCore/constitute.h" |
| #include "MagickCore/exception.h" |
| #include "MagickCore/histogram.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/paint.h" |
| #include "MagickCore/pixel-accessor.h" |
| #include "MagickCore/property.h" |
| #include "MagickCore/quantize.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| #include "MagickCore/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 *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % F i n d C o l o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % FindColor() returns the index of the matching entry from PalmPalette for a |
| % given PixelInfo. |
| % |
| % The format of the FindColor method is: |
| % |
| % int FindColor(PixelInfo *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 PixelInfo to be matched. |
| % |
| */ |
| static ssize_t FindColor(PixelInfo *packet) |
| { |
| register ssize_t |
| i; |
| |
| for (i=0; i < 256; i++) |
| if (ScaleQuantumToChar(ClampToQuantum(packet->red)) == PalmPalette[i][0] && |
| ScaleQuantumToChar(ClampToQuantum(packet->green)) == PalmPalette[i][1] && |
| ScaleQuantumToChar(ClampToQuantum(packet->blue)) == 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; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| totalOffset, |
| seekNextDepth; |
| |
| PixelInfo |
| transpix; |
| |
| Quantum |
| index; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register Quantum |
| *q; |
| |
| size_t |
| bits_per_pixel, |
| bytes_per_row, |
| flags, |
| extent, |
| 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,exception); |
| 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,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| (void) SetImageBackgroundColor(image,exception); |
| 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,exception) == MagickFalse)) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| GetPixelInfo(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=(double) (QuantumRange*ReadBlobByte(image)/31); |
| transpix.green=(double) (QuantumRange*ReadBlobByte(image)/63); |
| transpix.blue=(double) (QuantumRange*ReadBlobByte(image)/31); |
| } |
| if (bits_per_pixel == 8) |
| { |
| ssize_t |
| 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,255-i,exception); |
| image->colormap[index].red=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| image->colormap[index].green=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| image->colormap[index].blue=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| } |
| } |
| else |
| for (i=0; i < (ssize_t) (1L << bits_per_pixel); i++) |
| { |
| index=ConstrainColormapIndex(image,255-i,exception); |
| image->colormap[index].red=(MagickRealType) |
| ScaleCharToQuantum(PalmPalette[i][0]); |
| image->colormap[index].green=(MagickRealType) |
| ScaleCharToQuantum(PalmPalette[i][1]); |
| image->colormap[index].blue=(MagickRealType) |
| 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,exception); |
| if (status == MagickFalse) |
| 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 == (Quantum *) NULL) |
| break; |
| 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(image,(Quantum) ((QuantumRange*((color16 >> 11) & |
| 0x1f))/0x1f),q); |
| SetPixelGreen(image,(Quantum) ((QuantumRange*((color16 >> 5) & |
| 0x3f))/0x3f),q); |
| SetPixelBlue(image,(Quantum) ((QuantumRange*((color16 >> 0) & |
| 0x1f))/0x1f),q); |
| SetPixelAlpha(image,OpaqueAlpha,q); |
| q+=GetPixelChannels(image); |
| } |
| } |
| 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=(Quantum) (mask-(((*ptr) & (mask << bit)) >> bit)); |
| SetPixelIndex(image,index,q); |
| SetPixelViaPixelInfo(image,image->colormap+(ssize_t) index,q); |
| if (bit) |
| bit-=bits_per_pixel; |
| else |
| { |
| ptr++; |
| bit=8-bits_per_pixel; |
| } |
| q+=GetPixelChannels(image); |
| } |
| 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) |
| { |
| ssize_t index=ConstrainColormapIndex(image,(ssize_t) (mask- |
| transparentIndex),exception); |
| if (bits_per_pixel != 16) |
| transpix=image->colormap[index]; |
| (void) TransparentPaintImage(image,&transpix,(Quantum) TransparentAlpha, |
| MagickFalse,exception); |
| } |
| 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,exception); |
| 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=AcquireMagickInfo("PALM","PALM","Palm pixmap"); |
| entry->decoder=(DecodeImageHandler *) ReadPALMImage; |
| entry->encoder=(EncodeImageHandler *) WritePALMImage; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| entry->flags|=CoderEncoderSeekableStreamFlag; |
| (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,ExceptionInfo *exception) |
| % |
| % A description of each parameter follows. |
| % |
| % o image_info: Specifies a pointer to an ImageInfo structure. |
| % |
| % o image: A pointer to a Image structure. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static MagickBooleanType WritePALMImage(const ImageInfo *image_info, |
| Image *image,ExceptionInfo *exception) |
| { |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| currentOffset, |
| offset, |
| scene; |
| |
| MagickSizeType |
| cc; |
| |
| PixelInfo |
| transpix; |
| |
| QuantizeInfo |
| *quantize_info; |
| |
| register ssize_t |
| x; |
| |
| register const Quantum |
| *p; |
| |
| register Quantum |
| *q; |
| |
| ssize_t |
| y; |
| |
| size_t |
| count, |
| bits_per_pixel, |
| bytes_per_row, |
| imageListLength, |
| nextDepthOffset, |
| one; |
| |
| unsigned char |
| bit, |
| 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); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| 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=0.0; |
| transpix.green=0.0; |
| transpix.blue=0.0; |
| transpix.alpha=0.0; |
| one=1; |
| version=0; |
| scene=0; |
| imageListLength=GetImageListLength(image); |
| do |
| { |
| (void) TransformImageColorspace(image,sRGBColorspace,exception); |
| 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,exception); |
| if (bits_per_pixel < 8) |
| { |
| (void) TransformImageColorspace(image,GRAYColorspace,exception); |
| (void) SetImageType(image,PaletteType,exception); |
| (void) SortColormapByIntensity(image,exception); |
| } |
| if ((image->storage_class == PseudoClass) && (image->colors > 256)) |
| (void) SetImageStorageClass(image,DirectClass,exception); |
| 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_method=IdentifyPaletteImage(image,exception) |
| == MagickFalse ? RiemersmaDitherMethod : NoDitherMethod; |
| quantize_info->number_colors=image->colors; |
| (void) QuantizeImage(quantize_info,image,exception); |
| (void) WriteBlobMSBShort(image,(unsigned short) image->colors); |
| for (count = 0; count < image->colors; count++) |
| { |
| (void) WriteBlobByte(image,(unsigned char) count); |
| (void) WriteBlobByte(image,ScaleQuantumToChar(ClampToQuantum( |
| image->colormap[count].red))); |
| (void) WriteBlobByte(image,ScaleQuantumToChar(ClampToQuantum( |
| image->colormap[count].green))); |
| (void) WriteBlobByte(image,ScaleQuantumToChar(ClampToQuantum( |
| 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,exception); |
| (void) RemapImage(quantize_info,image,affinity_image,exception); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=GetAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelIndex(image,(Quantum) FindColor(&image->colormap[(ssize_t) |
| GetPixelIndex(image,q)]),q); |
| q+=GetPixelChannels(image); |
| } |
| } |
| 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=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| if (bits_per_pixel == 16) |
| { |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| color16=(unsigned short) ((((31*(ssize_t) GetPixelRed(image,p))/ |
| (ssize_t) QuantumRange) << 11) | (((63*(ssize_t) |
| GetPixelGreen(image,p))/(ssize_t) QuantumRange) << 5) | |
| ((31*(ssize_t) GetPixelBlue(image,p))/(ssize_t) QuantumRange)); |
| if (GetPixelAlpha(image,p) == (Quantum) TransparentAlpha) |
| { |
| transpix.red=(MagickRealType) GetPixelRed(image,p); |
| transpix.green=(MagickRealType) GetPixelGreen(image,p); |
| transpix.blue=(MagickRealType) GetPixelBlue(image,p); |
| transpix.alpha=(MagickRealType) GetPixelAlpha(image,p); |
| flags|=PALM_HAS_TRANSPARENCY_FLAG; |
| } |
| *ptr++=(unsigned char) ((color16 >> 8) & 0xff); |
| *ptr++=(unsigned char) (color16 & 0xff); |
| p+=GetPixelChannels(image); |
| } |
| } |
| 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) GetPixelIndex(image,p); |
| else |
| color=(unsigned char) (GetPixelIndex(image,p)* |
| ((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); |
| } |
| p+=GetPixelChannels(image); |
| } |
| 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 < (unsigned char) MagickMin(8,(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 */ |
| offset=SeekBlob(image,currentOffset+10,SEEK_SET); |
| nextDepthOffset=(size_t) ((GetBlobSize(image)-currentOffset)/4); |
| (void) WriteBlobMSBShort(image,(unsigned short) nextDepthOffset); |
| currentOffset=(MagickOffsetType) GetBlobSize(image); |
| offset=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); |
| return(MagickTrue); |
| } |
