2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % Read/Write Encapsulated Postscript Format (with preview). %
20 % Copyright 1999-2010 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 % http://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 "magick/studio.h"
43 #include "magick/blob.h"
44 #include "magick/blob-private.h"
45 #include "magick/color.h"
46 #include "magick/constitute.h"
47 #include "magick/draw.h"
48 #include "magick/exception.h"
49 #include "magick/exception-private.h"
50 #include "magick/delegate.h"
51 #include "magick/geometry.h"
52 #include "magick/histogram.h"
53 #include "magick/image.h"
54 #include "magick/image-private.h"
55 #include "magick/list.h"
56 #include "magick/magick.h"
57 #include "magick/memory_.h"
58 #include "magick/monitor.h"
59 #include "magick/monitor-private.h"
60 #include "magick/quantize.h"
61 #include "magick/resource_.h"
62 #include "magick/quantum-private.h"
63 #include "magick/static.h"
64 #include "magick/string_.h"
65 #include "magick/module.h"
66 #include "magick/transform.h"
67 #include "magick/utility.h"
72 typedef struct _EPTInfo
93 static MagickBooleanType
94 WriteEPTImage(const ImageInfo *,Image *);
97 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
105 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
107 % IsEPT() returns MagickTrue if the image format type, identified by the
108 % magick string, is EPT.
110 % The format of the IsEPT method is:
112 % MagickBooleanType IsEPT(const unsigned char *magick,const size_t length)
114 % A description of each parameter follows:
116 % o magick: compare image format pattern against these bytes.
118 % o length: Specifies the length of the magick string.
121 static MagickBooleanType IsEPT(const unsigned char *magick,const size_t length)
125 if (memcmp(magick,"\305\320\323\306",4) == 0)
131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
135 % R e a d E P T I m a g e %
139 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
141 % ReadEPTImage() reads a binary Postscript image file and returns it. It
142 % allocates the memory necessary for the new Image structure and returns a
143 % pointer to the new image.
145 % The format of the ReadEPTImage method is:
147 % Image *ReadEPTImage(const ImageInfo *image_info,
148 % ExceptionInfo *exception)
150 % A description of each parameter follows:
152 % o image_info: the image info.
154 % o exception: return any errors or warnings in this structure.
157 static Image *ReadEPTImage(const ImageInfo *image_info,ExceptionInfo *exception)
180 assert(image_info != (const ImageInfo *) NULL);
181 assert(image_info->signature == MagickSignature);
182 if (image_info->debug != MagickFalse)
183 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
184 image_info->filename);
185 assert(exception != (ExceptionInfo *) NULL);
186 assert(exception->signature == MagickSignature);
187 image=AcquireImage(image_info);
188 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
189 if (status == MagickFalse)
191 image=DestroyImageList(image);
192 return((Image *) NULL);
194 ept_info.magick=ReadBlobLSBLong(image);
195 if (ept_info.magick != 0xc6d3d0c5ul)
196 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
197 ept_info.postscript_offset=(MagickOffsetType) ReadBlobLSBLong(image);
198 ept_info.postscript_length=ReadBlobLSBLong(image);
199 (void) ReadBlobLSBLong(image);
200 (void) ReadBlobLSBLong(image);
201 ept_info.tiff_offset=(MagickOffsetType) ReadBlobLSBLong(image);
202 ept_info.tiff_length=ReadBlobLSBLong(image);
203 (void) ReadBlobLSBShort(image);
204 ept_info.postscript=(unsigned char *) AcquireQuantumMemory(
205 ept_info.postscript_length+1,sizeof(*ept_info.postscript));
206 if (ept_info.postscript == (unsigned char *) NULL)
207 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
208 (void) ResetMagickMemory(ept_info.postscript,0,(ept_info.postscript_length+1)*
209 sizeof(*ept_info.postscript));
210 ept_info.tiff=(unsigned char *) AcquireQuantumMemory(ept_info.tiff_length+1,
211 sizeof(*ept_info.tiff));
212 if (ept_info.tiff == (unsigned char *) NULL)
213 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
214 (void) ResetMagickMemory(ept_info.tiff,0,(ept_info.tiff_length+1)*
215 sizeof(*ept_info.tiff));
216 offset=SeekBlob(image,ept_info.tiff_offset,SEEK_SET);
218 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
219 count=ReadBlob(image,ept_info.tiff_length,ept_info.tiff);
220 if (count != (ssize_t) (ept_info.tiff_length))
221 (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageWarning,
222 "InsufficientImageDataInFile","`%s'",image->filename);
223 offset=SeekBlob(image,ept_info.postscript_offset,SEEK_SET);
225 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
226 count=ReadBlob(image,ept_info.postscript_length,ept_info.postscript);
227 if (count != (ssize_t) (ept_info.postscript_length))
228 (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageWarning,
229 "InsufficientImageDataInFile","`%s'",image->filename);
230 (void) CloseBlob(image);
231 image=DestroyImage(image);
232 read_info=CloneImageInfo(image_info);
233 (void) CopyMagickString(read_info->magick,"EPS",MaxTextExtent);
234 image=BlobToImage(read_info,ept_info.postscript,ept_info.postscript_length,
236 if (image == (Image *) NULL)
238 (void) CopyMagickString(read_info->magick,"TIFF",MaxTextExtent);
239 image=BlobToImage(read_info,ept_info.tiff,ept_info.tiff_length,exception);
241 read_info=DestroyImageInfo(read_info);
242 if (image != (Image *) NULL)
243 (void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
244 ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
245 ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
246 ept_info.postscript);
251 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255 % R e g i s t e r E P T I m a g e %
259 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
261 % RegisterEPTImage() adds attributes for the EPT image format to
262 % the list of supported formats. The attributes include the image format
263 % tag, a method to read and/or write the format, whether the format
264 % supports the saving of more than one frame to the same file or blob,
265 % whether the format supports native in-memory I/O, and a brief
266 % description of the format.
268 % The format of the RegisterEPTImage method is:
270 % size_t RegisterEPTImage(void)
273 ModuleExport size_t RegisterEPTImage(void)
278 entry=SetMagickInfo("EPT");
279 entry->decoder=(DecodeImageHandler *) ReadEPTImage;
280 entry->encoder=(EncodeImageHandler *) WriteEPTImage;
281 entry->magick=(IsImageFormatHandler *) IsEPT;
282 entry->adjoin=MagickFalse;
283 entry->blob_support=MagickFalse;
284 entry->description=ConstantString(
285 "Encapsulated PostScript with TIFF preview");
286 entry->module=ConstantString("EPT");
287 (void) RegisterMagickInfo(entry);
288 entry=SetMagickInfo("EPT2");
289 entry->decoder=(DecodeImageHandler *) ReadEPTImage;
290 entry->encoder=(EncodeImageHandler *) WriteEPTImage;
291 entry->magick=(IsImageFormatHandler *) IsEPT;
292 entry->adjoin=MagickFalse;
293 entry->blob_support=MagickFalse;
294 entry->description=ConstantString(
295 "Encapsulated PostScript Level II with TIFF preview");
296 entry->module=ConstantString("EPT");
297 (void) RegisterMagickInfo(entry);
298 entry=SetMagickInfo("EPT3");
299 entry->decoder=(DecodeImageHandler *) ReadEPTImage;
300 entry->encoder=(EncodeImageHandler *) WriteEPTImage;
301 entry->magick=(IsImageFormatHandler *) IsEPT;
302 entry->blob_support=MagickFalse;
303 entry->description=ConstantString(
304 "Encapsulated PostScript Level III with TIFF preview");
305 entry->module=ConstantString("EPT");
306 (void) RegisterMagickInfo(entry);
307 return(MagickImageCoderSignature);
311 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
315 % U n r e g i s t e r E P T I m a g e %
319 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
321 % UnregisterEPTImage() removes format registrations made by the
322 % EPT module from the list of supported formats.
324 % The format of the UnregisterEPTImage method is:
326 % UnregisterEPTImage(void)
329 ModuleExport void UnregisterEPTImage(void)
331 (void) UnregisterMagickInfo("EPT");
335 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
339 % W r i t e E P T I m a g e %
343 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
345 % WriteEPTImage() writes an image in the Encapsulated Postscript format
346 % with a TIFF preview.
348 % The format of the WriteEPTImage method is:
350 % MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
352 % A description of each parameter follows.
354 % o image_info: the image info.
356 % o image: The image.
359 static MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
362 filename[MaxTextExtent];
379 assert(image_info != (const ImageInfo *) NULL);
380 assert(image_info->signature == MagickSignature);
381 assert(image != (Image *) NULL);
382 assert(image->signature == MagickSignature);
383 if (image->debug != MagickFalse)
384 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
385 status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
386 if (status == MagickFalse)
388 write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
389 if (write_image == (Image *) NULL)
391 write_info=CloneImageInfo(image_info);
392 (void) CopyMagickString(write_info->magick,"EPS",MaxTextExtent);
393 if (LocaleCompare(image_info->magick,"EPT2") == 0)
394 (void) CopyMagickString(write_info->magick,"EPS2",MaxTextExtent);
395 if (LocaleCompare(image_info->magick,"EPT3") == 0)
396 (void) CopyMagickString(write_info->magick,"EPS3",MaxTextExtent);
397 (void) ResetMagickMemory(&ept_info,0,sizeof(ept_info));
398 ept_info.magick=0xc6d3d0c5ul;
399 ept_info.postscript=(unsigned char *) ImageToBlob(write_info,write_image,
400 &ept_info.postscript_length,&image->exception);
401 write_image=DestroyImage(write_image);
402 write_info=DestroyImageInfo(write_info);
403 if (ept_info.postscript == (void *) NULL)
405 write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
406 if (write_image == (Image *) NULL)
408 write_info=CloneImageInfo(image_info);
409 (void) CopyMagickString(write_info->magick,"TIFF",MaxTextExtent);
410 (void) FormatMagickString(filename,MaxTextExtent,"tiff:%.1024s",
411 write_info->filename);
412 (void) CopyMagickString(write_info->filename,filename,MaxTextExtent);
413 (void) TransformImage(&write_image,(char *) NULL,"512x512>");
414 if ((write_image->storage_class == DirectClass) ||
415 (write_image->colors > 256))
421 EPT preview requires that the image is colormapped.
423 GetQuantizeInfo(&quantize_info);
424 quantize_info.dither=IsPaletteImage(write_image,&image->exception) ==
425 MagickFalse ? MagickTrue : MagickFalse;
426 (void) QuantizeImage(&quantize_info,write_image);
428 write_info->compression=NoCompression;
429 ept_info.tiff=(unsigned char *) ImageToBlob(write_info,write_image,
430 &ept_info.tiff_length,&image->exception);
431 write_image=DestroyImage(write_image);
432 write_info=DestroyImageInfo(write_info);
433 if (ept_info.tiff == (void *) NULL)
435 ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
436 ept_info.postscript);
442 (void) WriteBlobLSBLong(image,(unsigned int) ept_info.magick);
443 (void) WriteBlobLSBLong(image,30);
444 (void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length);
445 (void) WriteBlobLSBLong(image,0);
446 (void) WriteBlobLSBLong(image,0);
447 (void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length+30);
448 (void) WriteBlobLSBLong(image,(unsigned int) ept_info.tiff_length);
449 (void) WriteBlobLSBShort(image,0xffff);
450 (void) WriteBlob(image,ept_info.postscript_length,ept_info.postscript);
451 (void) WriteBlob(image,ept_info.tiff_length,ept_info.tiff);
453 Relinquish resources.
455 ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
456 ept_info.postscript);
457 ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
458 (void) CloseBlob(image);