1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % PPPP GGGG X X %
7 % P P G X X %
8 % PPPP G GG X %
9 % P G G X X %
10 % P GGG X X %
11 % %
12 % %
13 % PGX JPEG 2000 Format %
14 % %
15 % Software Design %
16 % Cristy %
17 % July 2016 %
18 % %
19 % %
20 % Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
22 % %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
25 % %
26 % https://imagemagick.org/script/license.php %
27 % %
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. %
33 % %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
35 %
36 %
37 */
38
39 /*
40 Include declarations.
41 */
42 #include "MagickCore/studio.h"
43 #include "MagickCore/attribute.h"
44 #include "MagickCore/blob.h"
45 #include "MagickCore/blob-private.h"
46 #include "MagickCore/cache.h"
47 #include "MagickCore/color-private.h"
48 #include "MagickCore/colormap.h"
49 #include "MagickCore/colorspace.h"
50 #include "MagickCore/colorspace-private.h"
51 #include "MagickCore/exception.h"
52 #include "MagickCore/exception-private.h"
53 #include "MagickCore/image.h"
54 #include "MagickCore/image-private.h"
55 #include "MagickCore/list.h"
56 #include "MagickCore/magick.h"
57 #include "MagickCore/memory_.h"
58 #include "MagickCore/monitor.h"
59 #include "MagickCore/monitor-private.h"
60 #include "MagickCore/quantum-private.h"
61 #include "MagickCore/static.h"
62 #include "MagickCore/string_.h"
63 #include "MagickCore/module.h"
64
65 /*
66 Forward declarations.
67 */
68 static MagickBooleanType
69 WritePGXImage(const ImageInfo *,Image *,ExceptionInfo *);
70
71 /*
72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
73 % %
74 % %
75 % %
76 % I s P G X %
77 % %
78 % %
79 % %
80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
81 %
82 % IsPGXreturns True if the image format type, identified by the magick
83 % string, is PGX.
84 %
85 % The format of the IsPGX method is:
86 %
87 % unsigned int IsPGX(const unsigned char *magick,const size_t length)
88 %
89 % A description of each parameter follows:
90 %
91 % o magick: compare image format pattern against these bytes.
92 %
93 % o length: Specifies the length of the magick string.
94 %
95 */
IsPGX(const unsigned char * magick,const size_t length)96 static unsigned int IsPGX(const unsigned char *magick,const size_t length)
97 {
98 if (length < 5)
99 return(MagickFalse);
100 if ((memcmp(magick,"PG ML",5) == 0) || (memcmp(magick,"PG LM",5) == 0))
101 return(MagickTrue);
102 return(MagickFalse);
103 }
104
105 /*
106 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
107 % %
108 % %
109 % %
110 % R e a d P G X I m a g e %
111 % %
112 % %
113 % %
114 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
115 %
116 % ReadPGXImage() reads an image of raw bits in LSB order and returns it.
117 % It allocates the memory necessary for the new Image structure and returns
118 % a pointer to the new image.
119 %
120 % The format of the ReadPGXImage method is:
121 %
122 % Image *ReadPGXImage(const ImageInfo *image_info,
123 % ExceptionInfo *exception)
124 %
125 % A description of each parameter follows:
126 %
127 % o image_info: the image info.
128 %
129 % o exception: return any errors or warnings in this structure.
130 %
131 */
ReadPGXImage(const ImageInfo * image_info,ExceptionInfo * exception)132 static Image *ReadPGXImage(const ImageInfo *image_info,ExceptionInfo *exception)
133 {
134 char
135 buffer[MagickPathExtent],
136 endian[MagickPathExtent],
137 sans[MagickPathExtent],
138 sign[MagickPathExtent];
139
140 const unsigned char
141 *pixels;
142
143 Image
144 *image;
145
146 int
147 height,
148 precision,
149 width;
150
151 QuantumInfo
152 *quantum_info;
153
154 MagickBooleanType
155 status;
156
157 size_t
158 length;
159
160 ssize_t
161 count,
162 y;
163
164 /*
165 Open image file.
166 */
167 assert(image_info != (const ImageInfo *) NULL);
168 assert(image_info->signature == MagickCoreSignature);
169 if (image_info->debug != MagickFalse)
170 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
171 image_info->filename);
172 assert(exception != (ExceptionInfo *) NULL);
173 assert(exception->signature == MagickCoreSignature);
174 image=AcquireImage(image_info,exception);
175 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
176 if (status == MagickFalse)
177 {
178 image=DestroyImageList(image);
179 return((Image *) NULL);
180 }
181 if (ReadBlobString(image,buffer) == (char *) NULL)
182 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
183 count=(ssize_t) sscanf(buffer,"PG%[ \t]%2s%[ \t+-]%d%[ \t]%d%[ \t]%d",sans,
184 endian,sign,&precision,sans,&width,sans,&height);
185 if (count != 8)
186 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
187 image->depth=(size_t) precision;
188 if (LocaleCompare(endian,"ML") == 0)
189 image->endian=MSBEndian;
190 image->columns=(size_t) width;
191 image->rows=(size_t) height;
192 if ((image->columns == 0) || (image->rows == 0))
193 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
194 if (image_info->ping != MagickFalse)
195 {
196 (void) CloseBlob(image);
197 return(GetFirstImageInList(image));
198 }
199 status=SetImageExtent(image,image->columns,image->rows,exception);
200 if (status == MagickFalse)
201 return(DestroyImageList(image));
202 /*
203 Convert PGX image.
204 */
205 (void) SetImageColorspace(image,GRAYColorspace,exception);
206 quantum_info=AcquireQuantumInfo(image_info,image);
207 if (quantum_info == (QuantumInfo *) NULL)
208 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
209 length=GetQuantumExtent(image,quantum_info,GrayQuantum);
210 for (y=0; y < (ssize_t) image->rows; y++)
211 {
212 register Quantum
213 *magick_restrict q;
214
215 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
216 if (q == (Quantum *) NULL)
217 break;
218 pixels=(const unsigned char *) ReadBlobStream(image,length,
219 GetQuantumPixels(quantum_info),&count);
220 if (count != (ssize_t) length)
221 break;
222 (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
223 GrayQuantum,pixels,exception);
224 if (SyncAuthenticPixels(image,exception) == MagickFalse)
225 break;
226 if (SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,image->rows) == MagickFalse)
227 break;
228 }
229 SetQuantumImageType(image,GrayQuantum);
230 quantum_info=DestroyQuantumInfo(quantum_info);
231 if (EOFBlob(image) != MagickFalse)
232 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
233 image->filename);
234 (void) CloseBlob(image);
235 return(GetFirstImageInList(image));
236 }
237
238 /*
239 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
240 % %
241 % %
242 % %
243 % R e g i s t e r P G X I m a g e %
244 % %
245 % %
246 % %
247 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
248 %
249 % RegisterPGXImage() adds attributes for the PGX image format to
250 % the list of supported formats. The attributes include the image format
251 % tag, a method to read and/or write the format, whether the format
252 % supports the saving of more than one frame to the same file or blob,
253 % whether the format supports native in-memory I/O, and a brief
254 % description of the format.
255 %
256 % The format of the RegisterPGXImage method is:
257 %
258 % size_t RegisterPGXImage(void)
259 %
260 */
RegisterPGXImage(void)261 ModuleExport size_t RegisterPGXImage(void)
262 {
263 MagickInfo
264 *entry;
265
266 entry=AcquireMagickInfo("PGX","PGX","JPEG 2000 uncompressed format");
267 entry->decoder=(DecodeImageHandler *) ReadPGXImage;
268 entry->encoder=(EncodeImageHandler *) WritePGXImage;
269 entry->magick=(IsImageFormatHandler *) IsPGX;
270 entry->flags^=CoderAdjoinFlag;
271 entry->flags^=CoderUseExtensionFlag;
272 (void) RegisterMagickInfo(entry);
273 return(MagickImageCoderSignature);
274 }
275
276 /*
277 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
278 % %
279 % %
280 % %
281 % U n r e g i s t e r P G X I m a g e %
282 % %
283 % %
284 % %
285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
286 %
287 % UnregisterPGXImage() removes format registrations made by the
288 % PGX module from the list of supported formats.
289 %
290 % The format of the UnregisterPGXImage method is:
291 %
292 % UnregisterPGXImage(void)
293 %
294 */
UnregisterPGXImage(void)295 ModuleExport void UnregisterPGXImage(void)
296 {
297 (void) UnregisterMagickInfo("PGX");
298 }
299
300 /*
301 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
302 % %
303 % %
304 % %
305 % W r i t e P G X I m a g e %
306 % %
307 % %
308 % %
309 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
310 %
311 % WritePGXImage() writes an image of raw bits in LSB order to a file.
312 %
313 % The format of the WritePGXImage method is:
314 %
315 % MagickBooleanType WritePGXImage(const ImageInfo *image_info,
316 % Image *image,ExceptionInfo *exception)
317 %
318 % A description of each parameter follows.
319 %
320 % o image_info: the image info.
321 %
322 % o image: The image.
323 %
324 % o exception: return any errors or warnings in this structure.
325 %
326 */
WritePGXImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)327 static MagickBooleanType WritePGXImage(const ImageInfo *image_info,Image *image,
328 ExceptionInfo *exception)
329 {
330 char
331 buffer[MagickPathExtent];
332
333 MagickBooleanType
334 status;
335
336 QuantumInfo
337 *quantum_info;
338
339 register const Quantum
340 *p;
341
342 size_t
343 length;
344
345 ssize_t
346 count,
347 y;
348
349 unsigned char
350 *pixels;
351
352 /*
353 Open output image file.
354 */
355 assert(image_info != (const ImageInfo *) NULL);
356 assert(image_info->signature == MagickCoreSignature);
357 assert(image != (Image *) NULL);
358 assert(image->signature == MagickCoreSignature);
359 if (image->debug != MagickFalse)
360 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
361 assert(exception != (ExceptionInfo *) NULL);
362 assert(exception->signature == MagickCoreSignature);
363 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
364 if (status == MagickFalse)
365 return(status);
366 (void) FormatLocaleString(buffer,MagickPathExtent,"PG ML + %g %g %g\n",
367 (double) image->depth,(double) image->columns,(double) image->rows);
368 (void) WriteBlob(image,strlen(buffer),(unsigned char *) buffer);
369 (void) TransformImageColorspace(image,sRGBColorspace,exception);
370 quantum_info=AcquireQuantumInfo(image_info,image);
371 if (quantum_info == (QuantumInfo *) NULL)
372 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
373 pixels=(unsigned char *) GetQuantumPixels(quantum_info);
374 for (y=0; y < (ssize_t) image->rows; y++)
375 {
376 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
377 if (p == (const Quantum *) NULL)
378 break;
379 length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
380 GrayQuantum,pixels,exception);
381 count=WriteBlob(image,length,pixels);
382 if (count != (ssize_t) length)
383 break;
384 count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
385 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
386 image->rows);
387 if (status == MagickFalse)
388 break;
389 }
390 quantum_info=DestroyQuantumInfo(quantum_info);
391 if (y < (ssize_t) image->rows)
392 ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
393 (void) CloseBlob(image);
394 return(status);
395 }
396