/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % PPPP W W PPPP % % P P W W P P % % PPPP W W PPPP % % P W W W P % % P W W P % % % % % % Read Seattle Film Works Image Format. % % % % Software Design % % John Cristy % % July 1992 % % % % % % Copyright 1999-2007 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 "magick/studio.h" #include "magick/blob.h" #include "magick/blob-private.h" #include "magick/constitute.h" #include "magick/exception.h" #include "magick/exception-private.h" #include "magick/image.h" #include "magick/image-private.h" #include "magick/list.h" #include "magick/magick.h" #include "magick/memory_.h" #include "magick/monitor.h" #include "magick/resource_.h" #include "magick/quantum-private.h" #include "magick/static.h" #include "magick/string_.h" #include "magick/module.h" /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s P W P % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsPWP() returns MagickTrue if the image format type, identified by the % magick string, is PWP. % % The format of the IsPWP method is: % % MagickBooleanType IsPWP(const unsigned char *magick,const size_t length) % % A description of each parameter follows: % % o magick: This string is generally the first few bytes of an image file % or blob. % % o length: Specifies the length of the magick string. % % */ static MagickBooleanType IsPWP(const unsigned char *magick,const size_t length) { if (length < 5) return(MagickFalse); if (LocaleNCompare((char *) magick,"SFW95",5) == 0) return(MagickTrue); return(MagickFalse); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d P W P I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadPWPImage() reads a Seattle Film Works multi-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 ReadPWPImage method is: % % Image *ReadPWPImage(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 *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception) { FILE *file; Image *image, *next_image, *pwp_image; ImageInfo *read_info; int c, unique_file; MagickBooleanType status; register Image *p; register long i; ssize_t count; unsigned char magick[MaxTextExtent]; unsigned long filesize; /* Open image file. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); if (image_info->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", image_info->filename); assert(exception != (ExceptionInfo *) NULL); assert(exception->signature == MagickSignature); pwp_image=AllocateImage(image_info); image=pwp_image; status=OpenBlob(image_info,pwp_image,ReadBinaryBlobMode,exception); if (status == MagickFalse) return((Image *) NULL); count=ReadBlob(pwp_image,5,magick); if ((count == 0) || (LocaleNCompare((char *) magick,"SFW95",5) != 0)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); read_info=CloneImageInfo(image_info); (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL, (void *) NULL); SetImageInfoBlob(read_info,(void *) NULL,0); unique_file=AcquireUniqueFileResource(read_info->filename); for ( ; ; ) { for (c=ReadBlobByte(pwp_image); c != EOF; c=ReadBlobByte(pwp_image)) { for (i=0; i < 17; i++) magick[i]=magick[i+1]; magick[17]=(unsigned char) c; if (LocaleNCompare((char *) (magick+12),"SFW94A",6) == 0) break; } if (c == EOF) break; if (LocaleNCompare((char *) (magick+12),"SFW94A",6) != 0) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); /* Dump SFW image to a temporary file. */ file=(FILE *) NULL; if (unique_file != -1) file=fdopen(unique_file,"wb"); if ((unique_file == -1) || (file == (FILE *) NULL)) { ThrowFileException(exception,FileOpenError,"UnableToWriteFile", image->filename); image=DestroyImageList(image); return((Image *) NULL); } (void) fwrite("SFW94A",1,6,file); filesize=65535UL*magick[2]+256L*magick[1]+magick[0]; for (i=0; i < (long) filesize; i++) { c=ReadBlobByte(pwp_image); (void) fputc(c,file); } (void) fclose(file); next_image=ReadImage(read_info,exception); if (next_image == (Image *) NULL) break; (void) FormatMagickString(next_image->filename,MaxTextExtent, "slide_%02ld.sfw",next_image->scene); if (image == (Image *) NULL) image=next_image; else { /* Link image into image list. */ for (p=image; p->next != (Image *) NULL; p=GetNextImageInList(p)); next_image->previous=p; next_image->scene=p->scene+1; p->next=next_image; } if (image_info->number_scenes != 0) if (next_image->scene >= (image_info->scene+image_info->number_scenes-1)) break; if (image->progress_monitor != (MagickProgressMonitor) NULL) { status=image->progress_monitor(LoadImagesTag,TellBlob(pwp_image), GetBlobSize(image),image->client_data); if (status == MagickFalse) break; } } (void) RelinquishUniqueFileResource(read_info->filename); read_info=DestroyImageInfo(read_info); CloseBlob(pwp_image); pwp_image=DestroyImage(pwp_image); if (EOFBlob(image) != MagickFalse) { char *message; message=GetExceptionMessage(errno); (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError, "UnexpectedEndOfFile","`%s': %s",image->filename,message); message=DestroyString(message); } CloseBlob(image); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r P W P I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterPWPImage() adds attributes for the PWP 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 RegisterPWPImage method is: % % unsigned long RegisterPWPImage(void) % */ ModuleExport unsigned long RegisterPWPImage(void) { MagickInfo *entry; entry=SetMagickInfo("PWP"); entry->decoder=(DecodeImageHandler *) ReadPWPImage; entry->magick=(IsImageFormatHandler *) IsPWP; entry->description=ConstantString("Seattle Film Works"); entry->module=ConstantString("PWP"); (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r P W P I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % UnregisterPWPImage() removes format registrations made by the % PWP module from the list of supported formats. % % The format of the UnregisterPWPImage method is: % % UnregisterPWPImage(void) % */ ModuleExport void UnregisterPWPImage(void) { (void) UnregisterMagickInfo("PWP"); }