| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % SSSSS FFFFF W W % |
| % SS F W W % |
| % SSS FFF W W % |
| % SS F W W W % |
| % SSSSS F W W % |
| % % |
| % % |
| % Read/Write ImageMagick 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/constitute.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/resource_.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| #include "MagickCore/transform.h" |
| #include "MagickCore/utility.h" |
| #include "MagickCore/utility-private.h" |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s S F W % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsSFW() returns MagickTrue if the image format type, identified by the |
| % magick string, is SFW. |
| % |
| % The format of the IsSFW method is: |
| % |
| % MagickBooleanType IsSFW(const unsigned char *magick,const size_t length) |
| % |
| % A description of each parameter follows: |
| % |
| % o magick: compare image format pattern against these bytes. |
| % |
| % o length: Specifies the length of the magick string. |
| % |
| */ |
| static MagickBooleanType IsSFW(const unsigned char *magick,const size_t length) |
| { |
| if (length < 5) |
| return(MagickFalse); |
| if (LocaleNCompare((const char *) magick,"SFW94",5) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d S F W I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadSFWImage() reads a Seattle Film Works 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 ReadSFWImage method is: |
| % |
| % Image *ReadSFWImage(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 unsigned char *SFWScan(const unsigned char *p,const unsigned char *q, |
| const unsigned char *target,const size_t length) |
| { |
| register ssize_t |
| i; |
| |
| while ((p+length) < q) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| if (p[i] != target[i]) |
| break; |
| if (i == (ssize_t) length) |
| return((unsigned char *) p); |
| p++; |
| } |
| return((unsigned char *) NULL); |
| } |
| |
| static void TranslateSFWMarker(unsigned char *marker) |
| { |
| switch (marker[1]) |
| { |
| case 0xc8: marker[1]=0xd8; break; /* soi */ |
| case 0xd0: marker[1]=0xe0; break; /* app */ |
| case 0xcb: marker[1]=0xdb; break; /* dqt */ |
| case 0xa0: marker[1]=0xc0; break; /* sof */ |
| case 0xa4: marker[1]=0xc4; break; /* sof */ |
| case 0xca: marker[1]=0xda; break; /* sos */ |
| case 0xc9: marker[1]=0xd9; break; /* eoi */ |
| default: break; |
| } |
| } |
| |
| static Image *ReadSFWImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| static unsigned char |
| HuffmanTable[] = |
| { |
| 0xFF, 0xC4, 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, |
| 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, |
| 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
| 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, |
| 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01, |
| 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, |
| 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, |
| 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, |
| 0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, |
| 0xF0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, |
| 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, |
| 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
| 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, |
| 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, |
| 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, |
| 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, |
| 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, |
| 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, |
| 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, |
| 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0x11, |
| 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, |
| 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, |
| 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, |
| 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09, |
| 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, |
| 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, |
| 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, |
| 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, |
| 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, |
| 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, |
| 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
| 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, |
| 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, |
| 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, |
| 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, |
| 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, |
| 0xF9, 0xFA |
| }; |
| |
| FILE |
| *file; |
| |
| Image |
| *flipped_image, |
| *jpeg_image, |
| *image; |
| |
| ImageInfo |
| *read_info; |
| |
| int |
| unique_file; |
| |
| MagickBooleanType |
| status; |
| |
| register unsigned char |
| *header, |
| *data; |
| |
| size_t |
| extent; |
| |
| ssize_t |
| count; |
| |
| unsigned char |
| *buffer, |
| *offset; |
| |
| /* |
| 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 image into a buffer. |
| */ |
| if (GetBlobSize(image) != (size_t) GetBlobSize(image)) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| if (GetBlobSize(image) < 141) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| buffer=(unsigned char *) AcquireQuantumMemory((size_t) GetBlobSize(image)+ |
| MagickPathExtent,sizeof(*buffer)); |
| if (buffer == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| count=ReadBlob(image,(size_t) GetBlobSize(image),buffer); |
| if ((count != (ssize_t) GetBlobSize(image)) || |
| (LocaleNCompare((char *) buffer,"SFW",3) != 0)) |
| { |
| buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| } |
| (void) CloseBlob(image); |
| /* |
| Find the start of the JFIF data |
| */ |
| header=SFWScan(buffer,buffer+count-1,(const unsigned char *) |
| "\377\310\377\320",4); |
| if ((header == (unsigned char *) NULL) || |
| ((header+140) > (buffer+GetBlobSize(image)))) |
| { |
| buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| } |
| TranslateSFWMarker(header); /* translate soi and app tags */ |
| TranslateSFWMarker(header+2); |
| (void) memcpy(header+6,"JFIF\0\001\0",7); /* JFIF magic */ |
| /* |
| Translate remaining markers. |
| */ |
| offset=header+2; |
| offset+=(((unsigned int) offset[2]) << 8)+offset[3]+2; |
| for ( ; ; ) |
| { |
| if ((offset+4) > (buffer+count-1)) |
| { |
| buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| TranslateSFWMarker(offset); |
| if (offset[1] == 0xda) |
| break; |
| offset+=(((unsigned int) offset[2]) << 8)+offset[3]+2; |
| } |
| offset--; |
| data=SFWScan(offset,buffer+count-1,(const unsigned char *) "\377\311",2); |
| if (data == (unsigned char *) NULL) |
| { |
| buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| } |
| TranslateSFWMarker(data++); /* translate eoi marker */ |
| /* |
| Write JFIF file. |
| */ |
| read_info=CloneImageInfo(image_info); |
| SetImageInfoBlob(read_info,(void *) NULL,0); |
| file=(FILE *) NULL; |
| unique_file=AcquireUniqueFileResource(read_info->filename); |
| if (unique_file != -1) |
| file=fopen_utf8(read_info->filename,"wb"); |
| if ((unique_file == -1) || (file == (FILE *) NULL)) |
| { |
| buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| read_info=DestroyImageInfo(read_info); |
| (void) CopyMagickString(image->filename,read_info->filename, |
| MagickPathExtent); |
| ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile", |
| image->filename); |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| extent=fwrite(header,(size_t) (offset-header+1),1,file); |
| (void) extent; |
| extent=fwrite(HuffmanTable,1,sizeof(HuffmanTable)/sizeof(*HuffmanTable),file); |
| extent=fwrite(offset+1,(size_t) (data-offset),1,file); |
| status=ferror(file) != 0 ? MagickFalse : MagickTrue; |
| (void) fclose(file); |
| (void) close(unique_file); |
| buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| if (status == MagickFalse) |
| { |
| char |
| *message; |
| |
| (void) remove_utf8(read_info->filename); |
| read_info=DestroyImageInfo(read_info); |
| message=GetExceptionMessage(errno); |
| (void) ThrowMagickException(exception,GetMagickModule(),FileOpenError, |
| "UnableToWriteFile","`%s': %s",image->filename,message); |
| message=DestroyString(message); |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| /* |
| Read JPEG image. |
| */ |
| (void) CopyMagickString(read_info->magick,"JPEG",MagickPathExtent); |
| jpeg_image=ReadImage(read_info,exception); |
| (void) RelinquishUniqueFileResource(read_info->filename); |
| read_info=DestroyImageInfo(read_info); |
| if (jpeg_image == (Image *) NULL) |
| { |
| image=DestroyImageList(image); |
| return(jpeg_image); |
| } |
| (void) CopyMagickString(jpeg_image->filename,image->filename, |
| MagickPathExtent); |
| (void) CopyMagickString(jpeg_image->magick,image->magick,MagickPathExtent); |
| image=DestroyImageList(image); |
| image=jpeg_image; |
| /* |
| Correct image orientation. |
| */ |
| flipped_image=FlipImage(image,exception); |
| if (flipped_image != (Image *) NULL) |
| { |
| DuplicateBlob(flipped_image,image); |
| image=DestroyImage(image); |
| image=flipped_image; |
| } |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r S F W I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterSFWImage() adds attributes for the SFW 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 RegisterSFWImage method is: |
| % |
| % size_t RegisterSFWImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterSFWImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("SFW","SFW","Seattle Film Works"); |
| entry->decoder=(DecodeImageHandler *) ReadSFWImage; |
| entry->magick=(IsImageFormatHandler *) IsSFW; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| entry->flags^=CoderAdjoinFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r S F W I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterSFWImage() removes format registrations made by the |
| % SFW module from the list of supported formats. |
| % |
| % The format of the UnregisterSFWImage method is: |
| % |
| % UnregisterSFWImage(void) |
| % |
| */ |
| ModuleExport void UnregisterSFWImage(void) |
| { |
| (void) UnregisterMagickInfo("SFW"); |
| } |
