| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % RRRR GGG FFFFF % |
| % R R G F % |
| % RRRR G GG FFF % |
| % R R G G F % |
| % R R GGG F % |
| % % |
| % % |
| % Read/Write LEGO Mindstorms EV3 Robot Graphics File % |
| % % |
| % Software Design % |
| % Brian Wheeler % |
| % August 2013 % |
| % % |
| % % |
| % Copyright 1999-2015 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. % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % |
| */ |
| |
| /* |
| 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/pixel-accessor.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| #include "MagickCore/utility.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteRGFImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d X B M I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadRGFImage() reads an RGF bitmap 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 ReadRGFImage method is: |
| % |
| % Image *ReadRGFImage(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 *ReadRGFImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| Image |
| *image; |
| |
| int |
| bit; |
| |
| MagickBooleanType |
| status; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register Quantum |
| *q; |
| |
| register unsigned char |
| *p; |
| |
| ssize_t |
| y; |
| |
| unsigned char |
| byte, |
| *data; |
| |
| /* |
| 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); |
| } |
| /* |
| Read RGF header. |
| */ |
| image->columns = (unsigned long) ReadBlobByte(image); |
| image->rows = (unsigned long) ReadBlobByte(image); |
| image->depth=8; |
| image->storage_class=PseudoClass; |
| image->colors=2; |
| /* |
| Initialize image structure. |
| */ |
| if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| /* |
| Initialize colormap. |
| */ |
| image->colormap[0].red=QuantumRange; |
| image->colormap[0].green=QuantumRange; |
| image->colormap[0].blue=QuantumRange; |
| image->colormap[1].red=(Quantum) 0; |
| image->colormap[1].green=(Quantum) 0; |
| image->colormap[1].blue=(Quantum) 0; |
| 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)); |
| /* |
| Read hex image data. |
| */ |
| data=(unsigned char *) AcquireQuantumMemory(image->rows,image->columns* |
| sizeof(*data)); |
| if (data == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| p=data; |
| for (i=0; i < (ssize_t) (image->columns * image->rows); i++) |
| { |
| *p++=ReadBlobByte(image); |
| } |
| |
| /* |
| Convert RGF image to pixel packets. |
| */ |
| p=data; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| bit=0; |
| byte=0; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| if (bit == 0) |
| byte=(size_t) (*p++); |
| SetPixelIndex(image,(Quantum) ((byte & 0x01) != 0 ? 0x01 : 0x00),q); |
| bit++; |
| byte>>=1; |
| if (bit == 8) |
| bit=0; |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| data=(unsigned char *) RelinquishMagickMemory(data); |
| (void) SyncImage(image,exception); |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r R G F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterRGFImage() adds attributes for the RGF 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 RegisterRGFImage method is: |
| % |
| % size_t RegisterRGFImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterRGFImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("RGF","RGF", |
| "LEGO Mindstorms EV3 Robot Graphic Format (black and white)"); |
| entry->decoder=(DecodeImageHandler *) ReadRGFImage; |
| entry->encoder=(EncodeImageHandler *) WriteRGFImage; |
| entry->flags^=CoderAdjoinFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r R G F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterRGFImage() removes format registrations made by the |
| % RGF module from the list of supported formats. |
| % |
| % The format of the UnregisterRGFImage method is: |
| % |
| % UnregisterRGFImage(void) |
| % |
| */ |
| ModuleExport void UnregisterRGFImage(void) |
| { |
| (void) UnregisterMagickInfo("RGF"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e R G F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteRGFImage() writes an image to a file in the X bitmap format. |
| % |
| % The format of the WriteRGFImage method is: |
| % |
| % MagickBooleanType WriteRGFImage(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 WriteRGFImage(const ImageInfo *image_info,Image *image, |
| ExceptionInfo *exception) |
| { |
| MagickBooleanType |
| status; |
| |
| register const Quantum |
| *p; |
| |
| register ssize_t |
| x; |
| |
| size_t |
| bit, |
| byte; |
| |
| ssize_t |
| y; |
| |
| /* |
| 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((image->columns > 255L) || (image->rows > 255L)) |
| ThrowWriterException(ImageError,"Dimensions must be less than 255x255"); |
| /* |
| Write header (just the image dimensions) |
| */ |
| (void) WriteBlobByte(image,image->columns & 0xff); |
| (void) WriteBlobByte(image,image->rows & 0xff); |
| /* |
| Convert MIFF to bit pixels. |
| */ |
| (void) SetImageType(image,BilevelType,exception); |
| x=0; |
| y=0; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| bit=0; |
| byte=0; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| byte>>=1; |
| if (GetPixelLuma(image,p) < (QuantumRange/2.0)) |
| byte|=0x80; |
| bit++; |
| if (bit == 8) |
| { |
| /* |
| Write a bitmap byte to the image file. |
| */ |
| (void) WriteBlobByte(image,(unsigned char) byte); |
| bit=0; |
| byte=0; |
| } |
| p+=GetPixelChannels(image); |
| } |
| if (bit != 0) |
| (void) WriteBlobByte(image,(unsigned char) byte); |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) CloseBlob(image); |
| return(MagickTrue); |
| } |