| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % PPPP IIIII X X % |
| % P P I X X % |
| % PPPP I X % |
| % P I X X % |
| % P IIIII X X % |
| % % |
| % % |
| % Read Alias/Wavefront RLE Image Format % |
| % % |
| % Software Design % |
| % Cristy % |
| % July 1992 % |
| % % |
| % % |
| % Copyright 1999-2019 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/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/colormap.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" |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d P I X I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadPIXImage() reads a Alias/Wavefront RLE 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 ReadPIXImage method is: |
| % |
| % Image *ReadPIXImage(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 *ReadPIXImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| Image |
| *image; |
| |
| MagickBooleanType |
| status; |
| |
| Quantum |
| blue, |
| green, |
| index, |
| red; |
| |
| register ssize_t |
| x; |
| |
| register Quantum |
| *q; |
| |
| size_t |
| bits_per_pixel, |
| height, |
| length, |
| width; |
| |
| ssize_t |
| y; |
| |
| /* |
| 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 PIX image. |
| */ |
| width=ReadBlobMSBShort(image); |
| height=ReadBlobMSBShort(image); |
| (void) ReadBlobMSBShort(image); /* x-offset */ |
| (void) ReadBlobMSBShort(image); /* y-offset */ |
| bits_per_pixel=ReadBlobMSBShort(image); |
| if ((width == 0UL) || (height == 0UL) || ((bits_per_pixel != 8) && |
| (bits_per_pixel != 24))) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| do |
| { |
| /* |
| Initialize image structure. |
| */ |
| image->columns=width; |
| image->rows=height; |
| if (bits_per_pixel == 8) |
| if (AcquireImageColormap(image,256,exception) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) |
| if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| break; |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| status=ResetImagePixels(image,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| /* |
| Convert PIX raster image to pixel packets. |
| */ |
| red=(Quantum) 0; |
| green=(Quantum) 0; |
| blue=(Quantum) 0; |
| index=0; |
| length=0; |
| 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; x++) |
| { |
| if (length == 0) |
| { |
| int |
| c; |
| |
| c=ReadBlobByte(image); |
| if ((c == 0) || (c == EOF)) |
| break; |
| length=(size_t) c; |
| if (bits_per_pixel == 8) |
| index=ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| else |
| { |
| blue=ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| green=ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| red=ScaleCharToQuantum((unsigned char) ReadBlobByte(image)); |
| } |
| } |
| if (image->storage_class == PseudoClass) |
| SetPixelIndex(image,index,q); |
| SetPixelBlue(image,blue,q); |
| SetPixelGreen(image,green,q); |
| SetPixelRed(image,red,q); |
| length--; |
| q+=GetPixelChannels(image); |
| } |
| if (x < (ssize_t) image->columns) |
| break; |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| if (image->storage_class == PseudoClass) |
| (void) SyncImage(image,exception); |
| if (EOFBlob(image) != MagickFalse) |
| { |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| break; |
| } |
| /* |
| Proceed to next image. |
| */ |
| if (image_info->number_scenes != 0) |
| if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| break; |
| width=ReadBlobMSBLong(image); |
| height=ReadBlobMSBLong(image); |
| (void) ReadBlobMSBShort(image); |
| (void) ReadBlobMSBShort(image); |
| bits_per_pixel=ReadBlobMSBShort(image); |
| status=(width != 0UL) && (height == 0UL) && ((bits_per_pixel == 8) || |
| (bits_per_pixel == 24)) ? MagickTrue : MagickFalse; |
| if (status != MagickFalse) |
| { |
| /* |
| Allocate next image structure. |
| */ |
| 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 (status != MagickFalse); |
| (void) CloseBlob(image); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r P I X I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterPIXImage() adds attributes for the PIX 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 RegisterPIXImage method is: |
| % |
| % size_t RegisterPIXImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterPIXImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("PIX","PIX","Alias/Wavefront RLE image format"); |
| entry->decoder=(DecodeImageHandler *) ReadPIXImage; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r P I X I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterPIXImage() removes format registrations made by the |
| % PIX module from the list of supported formats. |
| % |
| % The format of the UnregisterPIXImage method is: |
| % |
| % UnregisterPIXImage(void) |
| % |
| */ |
| ModuleExport void UnregisterPIXImage(void) |
| { |
| (void) UnregisterMagickInfo("PIX"); |
| } |
