| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % % |
| % FFFFF AAA RRRR BBBB FFFFF EEEEE L DDDD % |
| % F A A R R B B F E L D D % |
| % FFF AAAAA RRRR BBBB FFF EEE L D D % |
| % F A A R R B B F E L D D % |
| % F A A R R BBBB F EEEEE LLLLL DDDD % |
| % % |
| % % |
| % Support Farbfeld Image Format % |
| % % |
| % Software Design % |
| % Dirk Lemstra % |
| % November 2020 % |
| % % |
| % % |
| % Copyright 1999-2021 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. % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % |
| */ |
| |
| /* |
| 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-private.h" |
| #include "MagickCore/colormap.h" |
| #include "MagickCore/colorspace.h" |
| #include "MagickCore/colorspace-private.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/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteFARBFELDImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s F A R B F E L D % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsFARBFELD() returns MagickTrue if the image format type, identified by the |
| % magick string, is Farbeld. |
| % |
| % The format of the IsFarbeld method is: |
| % |
| % MagickBooleanType IsFARBFELD(const unsigned char *magick, |
| % const size_t extent) |
| % |
| % A description of each parameter follows: |
| % |
| % o magick: compare image format pattern against these bytes. |
| % |
| % o extent: Specifies the extent of the magick string. |
| % |
| */ |
| static MagickBooleanType IsFARBFELD(const unsigned char *magick, |
| const size_t extent) |
| { |
| if (extent < 8) |
| return(MagickFalse); |
| if (LocaleNCompare((char *) magick,"farbfeld",8) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d F A R B F E L D I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadFARBFELDImage() reads an image of raw bits 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 ReadFARBFELDImage method is: |
| % |
| % Image *ReadFARBFELDImage(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 *ReadFARBFELDImage(const ImageInfo *image_info, |
| ExceptionInfo *exception) |
| { |
| Image |
| *image; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| MagickBooleanType |
| status; |
| |
| MagickSizeType |
| magic; |
| |
| size_t |
| extent; |
| |
| ssize_t |
| count, |
| 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); |
| } |
| image->depth=16; |
| image->endian=MSBEndian; |
| magic=ReadBlobLongLong(image); |
| if (magic != MagickULLConstant(7377303431559867492)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| image->columns=(size_t) ReadBlobLong(image); |
| image->rows=(size_t) ReadBlobLong(image); |
| image->alpha_trait=BlendPixelTrait; |
| if (image_info->ping != MagickFalse) |
| { |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| quantum_info=AcquireQuantumInfo(image_info,image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| status=SetQuantumFormat(image,quantum_info,UnsignedQuantumFormat); |
| extent=GetQuantumExtent(image,quantum_info,RGBAQuantum); |
| pixels=GetQuantumPixels(quantum_info); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| const void |
| *stream; |
| |
| Quantum |
| *magick_restrict q; |
| |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| stream=ReadBlobStream(image,extent,pixels,&count); |
| if (count != (ssize_t) extent) |
| break; |
| (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| RGBAQuantum,(unsigned char *) stream,exception); |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) |
| break; |
| } |
| SetQuantumImageType(image,RGBAQuantum); |
| quantum_info=DestroyQuantumInfo(quantum_info); |
| if (y < (ssize_t) image->rows) |
| ThrowReaderException(CorruptImageError,"UnableToReadImageData"); |
| if (EOFBlob(image) != MagickFalse) |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r F A R B F E L D I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterFARBFELDImage() adds attributes for the FARBFELD image format to |
| % the list of supported formats. The attributes 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 RegisterFARBFELDImage method is: |
| % |
| % size_t RegisterFARBFELDImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterFARBFELDImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("FARBFELD","FARBFELD","Farbfeld"); |
| entry->decoder=(DecodeImageHandler *) ReadFARBFELDImage; |
| entry->encoder=(EncodeImageHandler *) WriteFARBFELDImage; |
| entry->magick=(IsImageFormatHandler *) IsFARBFELD; |
| entry->flags|=CoderRawSupportFlag; |
| entry->flags^=CoderAdjoinFlag; |
| (void) RegisterMagickInfo(entry); |
| entry=AcquireMagickInfo("FARBFELD","FF","Farbfeld"); |
| entry->decoder=(DecodeImageHandler *) ReadFARBFELDImage; |
| entry->encoder=(EncodeImageHandler *) WriteFARBFELDImage; |
| entry->magick=(IsImageFormatHandler *) IsFARBFELD; |
| entry->flags|=CoderRawSupportFlag; |
| entry->flags^=CoderAdjoinFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r F A R B F E L D I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterFARBFELDImage() removes format registrations made by the |
| % Farbfeld module from the list of supported formats. |
| % |
| % The format of the UnregisterFARBFELDImage method is: |
| % |
| % UnregisterFARBFELDImage(void) |
| % |
| */ |
| ModuleExport void UnregisterFARBFELDImage(void) |
| { |
| (void) UnregisterMagickInfo("FARBFELD"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e F A R B F E L D I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteFARBFELDImage() writes an image of raw bits in MSB order to a file. |
| % |
| % The format of the WriteFARBFELDImage method is: |
| % |
| % MagickBooleanType WriteFARBFELDImage(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 MagickBooleanType WriteFARBFELDImage(const ImageInfo *image_info, |
| Image *image,ExceptionInfo *exception) |
| { |
| MagickBooleanType |
| status; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| const Quantum |
| *p; |
| |
| size_t |
| extent; |
| |
| ssize_t |
| count, |
| y; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| 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); |
| image->endian=MSBEndian; |
| (void) WriteBlobLongLong(image,MagickULLConstant(7377303431559867492)); |
| (void) WriteBlobLong(image,(unsigned int) image->columns); |
| (void) WriteBlobLong(image,(unsigned int) image->rows); |
| image->depth=16; |
| quantum_info=AcquireQuantumInfo(image_info,image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowWriterException(ImageError,"MemoryAllocationFailed"); |
| status=SetQuantumFormat(image,quantum_info,UnsignedQuantumFormat); |
| pixels=(unsigned char *) GetQuantumPixels(quantum_info); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| extent=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| RGBAQuantum,pixels,exception); |
| count=WriteBlob(image,extent,pixels); |
| if (count != (ssize_t) extent) |
| break; |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| quantum_info=DestroyQuantumInfo(quantum_info); |
| if (y < (ssize_t) image->rows) |
| ThrowWriterException(CorruptImageError,"UnableToWriteImageData"); |
| (void) CloseBlob(image); |
| return(status); |
| } |
