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1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 %                                                                             %
4 %                                                                             %
5 %                                                                             %
6 %                             AAA    AAA   IIIII                              %
7 %                            A   A  A   A    I                                %
8 %                            AAAAA  AAAAA    I                                %
9 %                            A   A  A   A    I                                %
10 %                            A   A  A   A  IIIII                              %
11 %                                                                             %
12 %                                                                             %
13 %                        Read/Write AAI X Image Format                        %
14 %                                                                             %
15 %                              Software Design                                %
16 %                                   Cristy                                    %
17 %                                 July 1992                                   %
18 %                                                                             %
19 %                                                                             %
20 %  Copyright 1999-2016 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 %    http://www.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/blob.h"
44 #include "MagickCore/blob-private.h"
45 #include "MagickCore/cache.h"
46 #include "MagickCore/colorspace.h"
47 #include "MagickCore/colorspace-private.h"
48 #include "MagickCore/exception.h"
49 #include "MagickCore/exception-private.h"
50 #include "MagickCore/image.h"
51 #include "MagickCore/image-private.h"
52 #include "MagickCore/list.h"
53 #include "MagickCore/magick.h"
54 #include "MagickCore/memory_.h"
55 #include "MagickCore/monitor.h"
56 #include "MagickCore/monitor-private.h"
57 #include "MagickCore/pixel.h"
58 #include "MagickCore/pixel-accessor.h"
59 #include "MagickCore/quantum-private.h"
60 #include "MagickCore/static.h"
61 #include "MagickCore/string_.h"
62 #include "MagickCore/module.h"
63 
64 /*
65   Forward declarations.
66 */
67 static MagickBooleanType
68   WriteAAIImage(const ImageInfo *,Image *,ExceptionInfo *);
69 
70 /*
71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
72 %                                                                             %
73 %                                                                             %
74 %                                                                             %
75 %   R e a d A A I I m a g e                                                   %
76 %                                                                             %
77 %                                                                             %
78 %                                                                             %
79 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
80 %
81 %  ReadAAIImage() reads an AAI Dune image file and returns it.  It
82 %  allocates the memory necessary for the new Image structure and returns a
83 %  pointer to the new image.
84 %
85 %  The format of the ReadAAIImage method is:
86 %
87 %      Image *ReadAAIImage(const ImageInfo *image_info,ExceptionInfo *exception)
88 %
89 %  A description of each parameter follows:
90 %
91 %    o image_info: the image info.
92 %
93 %    o exception: return any errors or warnings in this structure.
94 %
95 */
ReadAAIImage(const ImageInfo * image_info,ExceptionInfo * exception)96 static Image *ReadAAIImage(const ImageInfo *image_info,ExceptionInfo *exception)
97 {
98   Image
99     *image;
100 
101   MagickBooleanType
102     status;
103 
104   register ssize_t
105     x;
106 
107   register Quantum
108     *q;
109 
110   register unsigned char
111     *p;
112 
113   size_t
114     height,
115     length,
116     width;
117 
118   ssize_t
119     count,
120     y;
121 
122   unsigned char
123     *pixels;
124 
125   /*
126     Open image file.
127   */
128   assert(image_info != (const ImageInfo *) NULL);
129   assert(image_info->signature == MagickCoreSignature);
130   if (image_info->debug != MagickFalse)
131     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
132       image_info->filename);
133   assert(exception != (ExceptionInfo *) NULL);
134   assert(exception->signature == MagickCoreSignature);
135   image=AcquireImage(image_info,exception);
136   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
137   if (status == MagickFalse)
138     {
139       image=DestroyImageList(image);
140       return((Image *) NULL);
141     }
142   /*
143     Read AAI Dune image.
144   */
145   width=ReadBlobLSBLong(image);
146   height=ReadBlobLSBLong(image);
147   if (EOFBlob(image) != MagickFalse)
148     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
149   if ((width == 0UL) || (height == 0UL))
150     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
151   do
152   {
153     /*
154       Convert AAI raster image to pixel packets.
155     */
156     image->columns=width;
157     image->rows=height;
158     image->depth=8;
159     if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
160       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
161         break;
162     status=SetImageExtent(image,image->columns,image->rows,exception);
163     if (status == MagickFalse)
164       return(DestroyImageList(image));
165     pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
166       4*sizeof(*pixels));
167     if (pixels == (unsigned char *) NULL)
168       ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
169     length=(size_t) 4*image->columns;
170     for (y=0; y < (ssize_t) image->rows; y++)
171     {
172       count=ReadBlob(image,length,pixels);
173       if (count != (ssize_t) length)
174         ThrowReaderException(CorruptImageError,"UnableToReadImageData");
175       p=pixels;
176       q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
177       if (q == (Quantum *) NULL)
178         break;
179       for (x=0; x < (ssize_t) image->columns; x++)
180       {
181         SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
182         SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
183         SetPixelRed(image,ScaleCharToQuantum(*p++),q);
184         if (*p == 254)
185           *p=255;
186         SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
187         if (GetPixelAlpha(image,q) != OpaqueAlpha)
188           image->alpha_trait=BlendPixelTrait;
189         q+=GetPixelChannels(image);
190       }
191       if (SyncAuthenticPixels(image,exception) == MagickFalse)
192         break;
193       if (image->previous == (Image *) NULL)
194         {
195           status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
196             image->rows);
197           if (status == MagickFalse)
198             break;
199         }
200     }
201     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
202     if (EOFBlob(image) != MagickFalse)
203       {
204         ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
205           image->filename);
206         break;
207       }
208     /*
209       Proceed to next image.
210     */
211     if (image_info->number_scenes != 0)
212       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
213         break;
214     width=ReadBlobLSBLong(image);
215     height=ReadBlobLSBLong(image);
216     if ((width != 0UL) && (height != 0UL))
217       {
218         /*
219           Allocate next image structure.
220         */
221         AcquireNextImage(image_info,image,exception);
222         if (GetNextImageInList(image) == (Image *) NULL)
223           {
224             image=DestroyImageList(image);
225             return((Image *) NULL);
226           }
227         image=SyncNextImageInList(image);
228         status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
229           GetBlobSize(image));
230         if (status == MagickFalse)
231           break;
232       }
233   } while ((width != 0UL) && (height != 0UL));
234   (void) CloseBlob(image);
235   return(GetFirstImageInList(image));
236 }
237 
238 /*
239 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
240 %                                                                             %
241 %                                                                             %
242 %                                                                             %
243 %   R e g i s t e r A A I I m a g e                                           %
244 %                                                                             %
245 %                                                                             %
246 %                                                                             %
247 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
248 %
249 %  RegisterAAIImage() adds attributes for the AAI Dune image format to the list
250 %  of supported formats.  The attributes include the image format tag, a
251 %  method to read and/or write the format, whether the format supports the
252 %  saving of more than one frame to the same file or blob, whether the format
253 %  supports native in-memory I/O, and a brief description of the format.
254 %
255 %  The format of the RegisterAAIImage method is:
256 %
257 %      size_t RegisterAAIImage(void)
258 %
259 */
RegisterAAIImage(void)260 ModuleExport size_t RegisterAAIImage(void)
261 {
262   MagickInfo
263     *entry;
264 
265   entry=AcquireMagickInfo("AAI","AAI","AAI Dune image");
266   entry->decoder=(DecodeImageHandler *) ReadAAIImage;
267   entry->encoder=(EncodeImageHandler *) WriteAAIImage;
268   (void) RegisterMagickInfo(entry);
269   return(MagickImageCoderSignature);
270 }
271 
272 /*
273 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
274 %                                                                             %
275 %                                                                             %
276 %                                                                             %
277 %   U n r e g i s t e r A A I I m a g e                                       %
278 %                                                                             %
279 %                                                                             %
280 %                                                                             %
281 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
282 %
283 %  UnregisterAAIImage() removes format registrations made by the
284 %  AAI module from the list of supported formats.
285 %
286 %  The format of the UnregisterAAIImage method is:
287 %
288 %      UnregisterAAIImage(void)
289 %
290 */
UnregisterAAIImage(void)291 ModuleExport void UnregisterAAIImage(void)
292 {
293   (void) UnregisterMagickInfo("AAI");
294 }
295 
296 /*
297 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
298 %                                                                             %
299 %                                                                             %
300 %                                                                             %
301 %   W r i t e A A I I m a g e                                                 %
302 %                                                                             %
303 %                                                                             %
304 %                                                                             %
305 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
306 %
307 %  WriteAAIImage() writes an image to a file in AAI Dune image format.
308 %
309 %  The format of the WriteAAIImage method is:
310 %
311 %      MagickBooleanType WriteAAIImage(const ImageInfo *image_info,
312 %        Image *image,ExceptionInfo *exception)
313 %
314 %  A description of each parameter follows.
315 %
316 %    o image_info: the image info.
317 %
318 %    o image:  The image.
319 %
320 %    o exception: return any errors or warnings in this structure.
321 %
322 */
WriteAAIImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)323 static MagickBooleanType WriteAAIImage(const ImageInfo *image_info,Image *image,
324   ExceptionInfo *exception)
325 {
326   MagickBooleanType
327     status;
328 
329   MagickOffsetType
330     scene;
331 
332   register const Quantum
333     *magick_restrict p;
334 
335   register ssize_t
336     x;
337 
338   register unsigned char
339     *magick_restrict q;
340 
341   ssize_t
342     count,
343     y;
344 
345   unsigned char
346     *pixels;
347 
348   /*
349     Open output image file.
350   */
351   assert(image_info != (const ImageInfo *) NULL);
352   assert(image_info->signature == MagickCoreSignature);
353   assert(image != (Image *) NULL);
354   assert(image->signature == MagickCoreSignature);
355   if (image->debug != MagickFalse)
356     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
357   assert(exception != (ExceptionInfo *) NULL);
358   assert(exception->signature == MagickCoreSignature);
359   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
360   if (status == MagickFalse)
361     return(status);
362   scene=0;
363   do
364   {
365     /*
366       Write AAI header.
367     */
368     (void) TransformImageColorspace(image,sRGBColorspace,exception);
369     (void) WriteBlobLSBLong(image,(unsigned int) image->columns);
370     (void) WriteBlobLSBLong(image,(unsigned int) image->rows);
371     /*
372       Allocate memory for pixels.
373     */
374     pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
375       4*sizeof(*pixels));
376     if (pixels == (unsigned char *) NULL)
377       ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
378     /*
379       Convert MIFF to AAI raster pixels.
380     */
381     for (y=0; y < (ssize_t) image->rows; y++)
382     {
383       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
384       if (p == (const Quantum *) NULL)
385         break;
386       q=pixels;
387       for (x=0; x < (ssize_t) image->columns; x++)
388       {
389         *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
390         *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
391         *q++=ScaleQuantumToChar(GetPixelRed(image,p));
392         *q=ScaleQuantumToChar((Quantum) (image->alpha_trait !=
393           UndefinedPixelTrait ? GetPixelAlpha(image,p) : OpaqueAlpha));
394         if (*q == 255)
395           *q=254;
396         p+=GetPixelChannels(image);
397         q++;
398       }
399       count=WriteBlob(image,(size_t) (q-pixels),pixels);
400       if (count != (ssize_t) (q-pixels))
401         break;
402       if (image->previous == (Image *) NULL)
403         {
404           status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
405             image->rows);
406           if (status == MagickFalse)
407             break;
408         }
409     }
410     pixels=(unsigned char *) RelinquishMagickMemory(pixels);
411     if (GetNextImageInList(image) == (Image *) NULL)
412       break;
413     image=SyncNextImageInList(image);
414     status=SetImageProgress(image,SaveImagesTag,scene++,
415       GetImageListLength(image));
416     if (status == MagickFalse)
417       break;
418   } while (image_info->adjoin != MagickFalse);
419   (void) CloseBlob(image);
420   return(MagickTrue);
421 }
422