1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % AAA V V SSSSS %
7 % A A V V SS %
8 % AAAAA V V SSS %
9 % A A V V SS %
10 % A A V SSSSS %
11 % %
12 % %
13 % Read/Write AVS X Image Format %
14 % %
15 % Software Design %
16 % Cristy %
17 % July 1992 %
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/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-accessor.h"
58 #include "MagickCore/quantum-private.h"
59 #include "MagickCore/static.h"
60 #include "MagickCore/string_.h"
61 #include "MagickCore/module.h"
62
63 /*
64 Forward declarations.
65 */
66 static MagickBooleanType
67 WriteAVSImage(const ImageInfo *,Image *,ExceptionInfo *);
68
69 /*
70 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
71 % %
72 % %
73 % %
74 % R e a d A V S I m a g e %
75 % %
76 % %
77 % %
78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79 %
80 % ReadAVSImage() reads an AVS X image file and returns it. It
81 % allocates the memory necessary for the new Image structure and returns a
82 % pointer to the new image.
83 %
84 % The format of the ReadAVSImage method is:
85 %
86 % Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
87 %
88 % A description of each parameter follows:
89 %
90 % o image_info: the image info.
91 %
92 % o exception: return any errors or warnings in this structure.
93 %
94 */
ReadAVSImage(const ImageInfo * image_info,ExceptionInfo * exception)95 static Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
96 {
97 Image
98 *image;
99
100 MagickBooleanType
101 status;
102
103 MemoryInfo
104 *pixel_info;
105
106 register Quantum
107 *q;
108
109 register ssize_t
110 x;
111
112 register unsigned char
113 *p;
114
115 size_t
116 height,
117 length,
118 width;
119
120 ssize_t
121 count,
122 y;
123
124 unsigned char
125 *pixels;
126
127 /*
128 Open image file.
129 */
130 assert(image_info != (const ImageInfo *) NULL);
131 assert(image_info->signature == MagickCoreSignature);
132 if (image_info->debug != MagickFalse)
133 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
134 image_info->filename);
135 assert(exception != (ExceptionInfo *) NULL);
136 assert(exception->signature == MagickCoreSignature);
137 image=AcquireImage(image_info,exception);
138 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
139 if (status == MagickFalse)
140 {
141 image=DestroyImageList(image);
142 return((Image *) NULL);
143 }
144 /*
145 Read AVS X image.
146 */
147 width=ReadBlobMSBLong(image);
148 height=ReadBlobMSBLong(image);
149 if (EOFBlob(image) != MagickFalse)
150 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
151 if ((width == 0UL) || (height == 0UL))
152 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
153 do
154 {
155 /*
156 Convert AVS raster image to pixel packets.
157 */
158 image->columns=width;
159 image->rows=height;
160 image->depth=8;
161 image->alpha_trait=BlendPixelTrait;
162 if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
163 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
164 break;
165 status=SetImageExtent(image,image->columns,image->rows,exception);
166 if (status == MagickFalse)
167 return(DestroyImageList(image));
168 pixel_info=AcquireVirtualMemory(image->columns,4*sizeof(*pixels));
169 if (pixel_info == (MemoryInfo *) NULL)
170 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
171 pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
172 length=(size_t) 4*image->columns;
173 for (y=0; y < (ssize_t) image->rows; y++)
174 {
175 count=ReadBlob(image,length,pixels);
176 if ((size_t) count != length)
177 {
178 pixel_info=RelinquishVirtualMemory(pixel_info);
179 ThrowReaderException(CorruptImageError,"UnableToReadImageData");
180 }
181 p=pixels;
182 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
183 if (q == (Quantum *) NULL)
184 break;
185 for (x=0; x < (ssize_t) image->columns; x++)
186 {
187 SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
188 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
189 SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
190 SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
191 q+=GetPixelChannels(image);
192 }
193 if (SyncAuthenticPixels(image,exception) == MagickFalse)
194 break;
195 if (image->previous == (Image *) NULL)
196 {
197 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
198 image->rows);
199 if (status == MagickFalse)
200 break;
201 }
202 }
203 pixel_info=RelinquishVirtualMemory(pixel_info);
204 if (EOFBlob(image) != MagickFalse)
205 {
206 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
207 image->filename);
208 break;
209 }
210 /*
211 Proceed to next image.
212 */
213 if (image_info->number_scenes != 0)
214 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
215 break;
216 width=ReadBlobMSBLong(image);
217 height=ReadBlobMSBLong(image);
218 if ((width != 0UL) && (height != 0UL))
219 {
220 /*
221 Allocate next image structure.
222 */
223 AcquireNextImage(image_info,image,exception);
224 if (GetNextImageInList(image) == (Image *) NULL)
225 {
226 status=MagickFalse;
227 break;
228 }
229 image=SyncNextImageInList(image);
230 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
231 GetBlobSize(image));
232 if (status == MagickFalse)
233 break;
234 }
235 } while ((width != 0UL) && (height != 0UL));
236 (void) CloseBlob(image);
237 if (status == MagickFalse)
238 return(DestroyImageList(image));
239 return(GetFirstImageInList(image));
240 }
241
242 /*
243 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
244 % %
245 % %
246 % %
247 % R e g i s t e r A V S I m a g e %
248 % %
249 % %
250 % %
251 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
252 %
253 % RegisterAVSImage() adds attributes for the AVS X image format to the list
254 % of supported formats. The attributes include the image format tag, a
255 % method to read and/or write the format, whether the format supports the
256 % saving of more than one frame to the same file or blob, whether the format
257 % supports native in-memory I/O, and a brief description of the format.
258 %
259 % The format of the RegisterAVSImage method is:
260 %
261 % size_t RegisterAVSImage(void)
262 %
263 */
RegisterAVSImage(void)264 ModuleExport size_t RegisterAVSImage(void)
265 {
266 MagickInfo
267 *entry;
268
269 entry=AcquireMagickInfo("AVS","AVS","AVS X image");
270 entry->decoder=(DecodeImageHandler *) ReadAVSImage;
271 entry->encoder=(EncodeImageHandler *) WriteAVSImage;
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 A V S I m a g e %
282 % %
283 % %
284 % %
285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
286 %
287 % UnregisterAVSImage() removes format registrations made by the
288 % AVS module from the list of supported formats.
289 %
290 % The format of the UnregisterAVSImage method is:
291 %
292 % UnregisterAVSImage(void)
293 %
294 */
UnregisterAVSImage(void)295 ModuleExport void UnregisterAVSImage(void)
296 {
297 (void) UnregisterMagickInfo("AVS");
298 }
299
300 /*
301 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
302 % %
303 % %
304 % %
305 % W r i t e A V S I m a g e %
306 % %
307 % %
308 % %
309 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
310 %
311 % WriteAVSImage() writes an image to a file in AVS X image format.
312 %
313 % The format of the WriteAVSImage method is:
314 %
315 % MagickBooleanType WriteAVSImage(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 */
WriteAVSImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)327 static MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image,
328 ExceptionInfo *exception)
329 {
330 MagickBooleanType
331 status;
332
333 MagickOffsetType
334 scene;
335
336 MemoryInfo
337 *pixel_info;
338
339 register const Quantum
340 *magick_restrict p;
341
342 register ssize_t
343 x;
344
345 register unsigned char
346 *magick_restrict q;
347
348 size_t
349 imageListLength;
350
351 ssize_t
352 count,
353 y;
354
355 unsigned char
356 *pixels;
357
358 /*
359 Open output image file.
360 */
361 assert(image_info != (const ImageInfo *) NULL);
362 assert(image_info->signature == MagickCoreSignature);
363 assert(image != (Image *) NULL);
364 assert(image->signature == MagickCoreSignature);
365 if (image->debug != MagickFalse)
366 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
367 assert(exception != (ExceptionInfo *) NULL);
368 assert(exception->signature == MagickCoreSignature);
369 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
370 if (status == MagickFalse)
371 return(status);
372 scene=0;
373 imageListLength=GetImageListLength(image);
374 do
375 {
376 /*
377 Write AVS header.
378 */
379 (void) TransformImageColorspace(image,sRGBColorspace,exception);
380 (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
381 (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
382 /*
383 Allocate memory for pixels.
384 */
385 pixel_info=AcquireVirtualMemory(image->columns,4*sizeof(*pixels));
386 if (pixel_info == (MemoryInfo *) NULL)
387 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
388 pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
389 /*
390 Convert MIFF to AVS raster pixels.
391 */
392 for (y=0; y < (ssize_t) image->rows; y++)
393 {
394 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
395 if (p == (const Quantum *) NULL)
396 break;
397 q=pixels;
398 for (x=0; x < (ssize_t) image->columns; x++)
399 {
400 *q++=ScaleQuantumToChar((Quantum) (image->alpha_trait ==
401 BlendPixelTrait ? GetPixelAlpha(image,p) : OpaqueAlpha));
402 *q++=ScaleQuantumToChar(GetPixelRed(image,p));
403 *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
404 *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
405 p+=GetPixelChannels(image);
406 }
407 count=WriteBlob(image,(size_t) (q-pixels),pixels);
408 if (count != (ssize_t) (q-pixels))
409 break;
410 if (image->previous == (Image *) NULL)
411 {
412 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
413 image->rows);
414 if (status == MagickFalse)
415 break;
416 }
417 }
418 pixel_info=RelinquishVirtualMemory(pixel_info);
419 if (GetNextImageInList(image) == (Image *) NULL)
420 break;
421 image=SyncNextImageInList(image);
422 status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
423 if (status == MagickFalse)
424 break;
425 } while (image_info->adjoin != MagickFalse);
426 (void) CloseBlob(image);
427 return(MagickTrue);
428 }
429