2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % Read/Write ImageMagick Image Format %
20 % Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % https://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
42 #include "MagickCore/studio.h"
43 #include "MagickCore/blob.h"
44 #include "MagickCore/blob-private.h"
45 #include "MagickCore/constitute.h"
46 #include "MagickCore/exception.h"
47 #include "MagickCore/exception-private.h"
48 #include "MagickCore/image.h"
49 #include "MagickCore/image-private.h"
50 #include "MagickCore/list.h"
51 #include "MagickCore/magick.h"
52 #include "MagickCore/memory_.h"
53 #include "MagickCore/resource_.h"
54 #include "MagickCore/quantum-private.h"
55 #include "MagickCore/static.h"
56 #include "MagickCore/string_.h"
57 #include "MagickCore/module.h"
58 #include "MagickCore/transform.h"
59 #include "MagickCore/utility.h"
60 #include "MagickCore/utility-private.h"
63 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
73 % IsSFW() returns MagickTrue if the image format type, identified by the
74 % magick string, is SFW.
76 % The format of the IsSFW method is:
78 % MagickBooleanType IsSFW(const unsigned char *magick,const size_t length)
80 % A description of each parameter follows:
82 % o magick: compare image format pattern against these bytes.
84 % o length: Specifies the length of the magick string.
87 static MagickBooleanType IsSFW(const unsigned char *magick,const size_t length)
91 if (LocaleNCompare((const char *) magick,"SFW94",5) == 0)
97 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
101 % R e a d S F W I m a g e %
105 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
107 % ReadSFWImage() reads a Seattle Film Works image file and returns it.
108 % It allocates the memory necessary for the new Image structure and returns a
109 % pointer to the new image.
111 % The format of the ReadSFWImage method is:
113 % Image *ReadSFWImage(const ImageInfo *image_info,ExceptionInfo *exception)
115 % A description of each parameter follows:
117 % o image_info: the image info.
119 % o exception: return any errors or warnings in this structure.
123 static unsigned char *SFWScan(const unsigned char *p,const unsigned char *q,
124 const unsigned char *target,const size_t length)
129 while ((p+length) < q)
131 for (i=0; i < (ssize_t) length; i++)
132 if (p[i] != target[i])
134 if (i == (ssize_t) length)
135 return((unsigned char *) p);
138 return((unsigned char *) NULL);
141 static void TranslateSFWMarker(unsigned char *marker)
145 case 0xc8: marker[1]=0xd8; break; /* soi */
146 case 0xd0: marker[1]=0xe0; break; /* app */
147 case 0xcb: marker[1]=0xdb; break; /* dqt */
148 case 0xa0: marker[1]=0xc0; break; /* sof */
149 case 0xa4: marker[1]=0xc4; break; /* sof */
150 case 0xca: marker[1]=0xda; break; /* sos */
151 case 0xc9: marker[1]=0xd9; break; /* eoi */
156 static Image *ReadSFWImage(const ImageInfo *image_info,ExceptionInfo *exception)
161 0xFF, 0xC4, 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01,
162 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
163 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
164 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
165 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04,
166 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01,
167 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00,
168 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21,
169 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32,
170 0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1,
171 0xF0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18,
172 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36,
173 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
174 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64,
175 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77,
176 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A,
177 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3,
178 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5,
179 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
180 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
181 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
182 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0x11,
183 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04,
184 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04,
185 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13,
186 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09,
187 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24,
188 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28,
189 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45,
190 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
191 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73,
192 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85,
193 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
194 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9,
195 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2,
196 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4,
197 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
198 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
219 register unsigned char
236 assert(image_info != (const ImageInfo *) NULL);
237 assert(image_info->signature == MagickCoreSignature);
238 if (image_info->debug != MagickFalse)
239 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
240 image_info->filename);
241 assert(exception != (ExceptionInfo *) NULL);
242 assert(exception->signature == MagickCoreSignature);
243 image=AcquireImage(image_info,exception);
244 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
245 if (status == MagickFalse)
247 image=DestroyImageList(image);
248 return((Image *) NULL);
251 Read image into a buffer.
253 if (GetBlobSize(image) != (size_t) GetBlobSize(image))
254 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
255 if (GetBlobSize(image) < 141)
256 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
257 buffer=(unsigned char *) AcquireQuantumMemory((size_t) GetBlobSize(image)+
258 MagickPathExtent,sizeof(*buffer));
259 if (buffer == (unsigned char *) NULL)
260 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
261 count=ReadBlob(image,(size_t) GetBlobSize(image),buffer);
262 if ((count != (ssize_t) GetBlobSize(image)) ||
263 (LocaleNCompare((char *) buffer,"SFW",3) != 0))
265 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
266 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
268 (void) CloseBlob(image);
270 Find the start of the JFIF data
272 header=SFWScan(buffer,buffer+count-1,(const unsigned char *)
273 "\377\310\377\320",4);
274 if ((header == (unsigned char *) NULL) ||
275 ((header+140) > (buffer+GetBlobSize(image))))
277 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
278 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
280 TranslateSFWMarker(header); /* translate soi and app tags */
281 TranslateSFWMarker(header+2);
282 (void) CopyMagickMemory(header+6,"JFIF\0\001\0",7); /* JFIF magic */
284 Translate remaining markers.
287 offset+=(((unsigned int) offset[2]) << 8)+offset[3]+2;
290 if ((offset+4) > (buffer+count-1))
292 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
293 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
295 TranslateSFWMarker(offset);
296 if (offset[1] == 0xda)
298 offset+=(((unsigned int) offset[2]) << 8)+offset[3]+2;
301 data=SFWScan(offset,buffer+count-1,(const unsigned char *) "\377\311",2);
302 if (data == (unsigned char *) NULL)
304 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
305 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
307 TranslateSFWMarker(data++); /* translate eoi marker */
311 read_info=CloneImageInfo(image_info);
312 SetImageInfoBlob(read_info,(void *) NULL,0);
314 unique_file=AcquireUniqueFileResource(read_info->filename);
315 if (unique_file != -1)
316 file=fopen_utf8(read_info->filename,"wb");
317 if ((unique_file == -1) || (file == (FILE *) NULL))
319 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
320 read_info=DestroyImageInfo(read_info);
321 (void) CopyMagickString(image->filename,read_info->filename,
323 ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile",
325 image=DestroyImageList(image);
326 return((Image *) NULL);
328 extent=fwrite(header,(size_t) (offset-header+1),1,file);
330 extent=fwrite(HuffmanTable,1,sizeof(HuffmanTable)/sizeof(*HuffmanTable),file);
331 extent=fwrite(offset+1,(size_t) (data-offset),1,file);
332 status=ferror(file) != 0 ? MagickFalse : MagickTrue;
334 (void) close(unique_file);
335 buffer=(unsigned char *) RelinquishMagickMemory(buffer);
336 if (status == MagickFalse)
341 (void) remove_utf8(read_info->filename);
342 read_info=DestroyImageInfo(read_info);
343 message=GetExceptionMessage(errno);
344 (void) ThrowMagickException(exception,GetMagickModule(),FileOpenError,
345 "UnableToWriteFile","`%s': %s",image->filename,message);
346 message=DestroyString(message);
347 image=DestroyImageList(image);
348 return((Image *) NULL);
353 jpeg_image=ReadImage(read_info,exception);
354 (void) RelinquishUniqueFileResource(read_info->filename);
355 read_info=DestroyImageInfo(read_info);
356 if (jpeg_image == (Image *) NULL)
358 image=DestroyImageList(image);
361 (void) CopyMagickString(jpeg_image->filename,image->filename,
363 (void) CopyMagickString(jpeg_image->magick,image->magick,MagickPathExtent);
364 image=DestroyImageList(image);
367 Correct image orientation.
369 flipped_image=FlipImage(image,exception);
370 if (flipped_image != (Image *) NULL)
372 DuplicateBlob(flipped_image,image);
373 image=DestroyImage(image);
376 return(GetFirstImageInList(image));
380 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
384 % R e g i s t e r S F W I m a g e %
388 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
390 % RegisterSFWImage() adds attributes for the SFW image format to
391 % the list of supported formats. The attributes include the image format
392 % tag, a method to read and/or write the format, whether the format
393 % supports the saving of more than one frame to the same file or blob,
394 % whether the format supports native in-memory I/O, and a brief
395 % description of the format.
397 % The format of the RegisterSFWImage method is:
399 % size_t RegisterSFWImage(void)
402 ModuleExport size_t RegisterSFWImage(void)
407 entry=AcquireMagickInfo("SFW","SFW","Seattle Film Works");
408 entry->decoder=(DecodeImageHandler *) ReadSFWImage;
409 entry->magick=(IsImageFormatHandler *) IsSFW;
410 entry->flags|=CoderDecoderSeekableStreamFlag;
411 entry->flags^=CoderAdjoinFlag;
412 (void) RegisterMagickInfo(entry);
413 return(MagickImageCoderSignature);
417 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
421 % U n r e g i s t e r S F W I m a g e %
425 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
427 % UnregisterSFWImage() removes format registrations made by the
428 % SFW module from the list of supported formats.
430 % The format of the UnregisterSFWImage method is:
432 % UnregisterSFWImage(void)
435 ModuleExport void UnregisterSFWImage(void)
437 (void) UnregisterMagickInfo("SFW");