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/* |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% % |
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% % |
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% % |
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% SSSSS FFFFF W W % |
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% SS F W W % |
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% SSS FFF W W % |
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% SS F W W W % |
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% SSSSS F W W % |
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% % |
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% % |
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% Read/Write ImageMagick Image Format % |
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% % |
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% Software Design % |
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% Cristy % |
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% July 1992 % |
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% % |
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% % |
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% Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization % |
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% dedicated to making software imaging solutions freely available. % |
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% % |
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% You may not use this file except in compliance with the License. You may % |
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% obtain a copy of the License at % |
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% % |
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% https://imagemagick.org/script/license.php % |
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% % |
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% Unless required by applicable law or agreed to in writing, software % |
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% distributed under the License is distributed on an "AS IS" BASIS, % |
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
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% See the License for the specific language governing permissions and % |
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% limitations under the License. % |
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% % |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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% |
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*/ |
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/* |
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Include declarations. |
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*/ |
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#include "MagickCore/studio.h" |
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#include "MagickCore/blob.h" |
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#include "MagickCore/blob-private.h" |
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#include "MagickCore/constitute.h" |
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#include "MagickCore/exception.h" |
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#include "MagickCore/exception-private.h" |
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#include "MagickCore/image.h" |
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#include "MagickCore/image-private.h" |
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#include "MagickCore/list.h" |
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#include "MagickCore/magick.h" |
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#include "MagickCore/memory_.h" |
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#include "MagickCore/resource_.h" |
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#include "MagickCore/quantum-private.h" |
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#include "MagickCore/static.h" |
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#include "MagickCore/string_.h" |
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#include "MagickCore/module.h" |
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#include "MagickCore/transform.h" |
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#include "MagickCore/utility.h" |
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#include "MagickCore/utility-private.h" |
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/* |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% % |
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% % |
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% % |
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% I s S F W % |
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% % |
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% % |
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% % |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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% IsSFW() returns MagickTrue if the image format type, identified by the |
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% magick string, is SFW. |
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% |
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% The format of the IsSFW method is: |
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% |
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% MagickBooleanType IsSFW(const unsigned char *magick,const size_t length) |
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% |
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% A description of each parameter follows: |
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% |
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% o magick: compare image format pattern against these bytes. |
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% |
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% o length: Specifies the length of the magick string. |
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% |
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*/ |
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static MagickBooleanType IsSFW(const unsigned char *magick,const size_t length) |
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{ |
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if (length < 5) |
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return(MagickFalse); |
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if (LocaleNCompare((const char *) magick,"SFW94",5) == 0) |
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return(MagickTrue); |
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return(MagickFalse); |
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} |
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/* |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% % |
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% % |
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% % |
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% R e a d S F W I m a g e % |
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% % |
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% % |
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% % |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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% ReadSFWImage() reads a Seattle Film Works image file and returns it. |
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% It allocates the memory necessary for the new Image structure and returns a |
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% pointer to the new image. |
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% |
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% The format of the ReadSFWImage method is: |
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% |
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% Image *ReadSFWImage(const ImageInfo *image_info,ExceptionInfo *exception) |
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% |
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% A description of each parameter follows: |
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% |
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% o image_info: the image info. |
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% |
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% o exception: return any errors or warnings in this structure. |
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% |
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*/ |
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static unsigned char *SFWScan(const unsigned char *p,const unsigned char *q, |
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const unsigned char *target,const size_t length) |
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{ |
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register ssize_t |
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i; |
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while ((p+length) < q) |
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{ |
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for (i=0; i < (ssize_t) length; i++) |
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if (p[i] != target[i]) |
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break; |
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if (i == (ssize_t) length) |
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return((unsigned char *) p); |
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p++; |
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} |
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return((unsigned char *) NULL); |
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} |
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static void TranslateSFWMarker(unsigned char *marker) |
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{ |
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switch (marker[1]) |
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{ |
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case 0xc8: marker[1]=0xd8; break; /* soi */ |
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case 0xd0: marker[1]=0xe0; break; /* app */ |
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case 0xcb: marker[1]=0xdb; break; /* dqt */ |
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case 0xa0: marker[1]=0xc0; break; /* sof */ |
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case 0xa4: marker[1]=0xc4; break; /* sof */ |
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case 0xca: marker[1]=0xda; break; /* sos */ |
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case 0xc9: marker[1]=0xd9; break; /* eoi */ |
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default: break; |
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} |
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} |
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static Image *ReadSFWImage(const ImageInfo *image_info,ExceptionInfo *exception) |
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{ |
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static unsigned char |
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HuffmanTable[] = |
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{ |
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0xFF, 0xC4, 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, |
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0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, |
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0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, |
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0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01, |
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0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, |
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0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, |
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0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, |
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0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, |
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0xF0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, |
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0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, |
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0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
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0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, |
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0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, |
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0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, |
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0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, |
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0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, |
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0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, |
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0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, |
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0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, |
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0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0x11, |
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0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, |
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0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, |
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0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, |
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0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09, |
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|
0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, |
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0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, |
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0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, |
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0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, |
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0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, |
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0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, |
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|
0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
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0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, |
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0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, |
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|
0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, |
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|
0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, |
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|
0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, |
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0xF9, 0xFA |
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}; |
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|
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FILE |
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|
*file; |
|
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|
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Image |
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|
*flipped_image, |
|
|
*jpeg_image, |
|
|
*image; |
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|
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|
ImageInfo |
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|
*read_info; |
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|
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|
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"); |
|
|
}
|
|
|
|
