Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / ImageMagick / b52981c56e906a958920792461cb15d707fbf8da / . / coders / aai.c
blob: c56312c432b8203f5abaee54b15c562eb8f59f3d [file] [log] [blame]
cristy397bede2011-01-18 23:59:59 +0000[diff] [blame]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% John Cristy %
17% July 1992 %
18% %
19% %
20% Copyright 1999-2011 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 "magick/studio.h"
43#include "magick/blob.h"
44#include "magick/blob-private.h"
45#include "magick/cache.h"
46#include "magick/colorspace.h"
47#include "magick/exception.h"
48#include "magick/exception-private.h"
49#include "magick/image.h"
50#include "magick/image-private.h"
51#include "magick/list.h"
52#include "magick/magick.h"
53#include "magick/memory_.h"
54#include "magick/monitor.h"
55#include "magick/monitor-private.h"
56#include "magick/quantum-private.h"
57#include "magick/static.h"
58#include "magick/string_.h"
59#include "magick/module.h"
60
61/*
62 Forward declarations.
63*/
64static MagickBooleanType
65 WriteAAIImage(const ImageInfo *,Image *);
66
67/*
68%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
69% %
70% %
71% %
72% R e a d A A I I m a g e %
73% %
74% %
75% %
76%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
77%
78% ReadAAIImage() reads an AAI Dune image file and returns it. It
79% allocates the memory necessary for the new Image structure and returns a
80% pointer to the new image.
81%
82% The format of the ReadAAIImage method is:
83%
84% Image *ReadAAIImage(const ImageInfo *image_info,ExceptionInfo *exception)
85%
86% A description of each parameter follows:
87%
88% o image_info: the image info.
89%
90% o exception: return any errors or warnings in this structure.
91%
92*/
93static Image *ReadAAIImage(const ImageInfo *image_info,ExceptionInfo *exception)
94{
95 Image
96 *image;
97
98 MagickBooleanType
99 status;
100
101 register ssize_t
102 x;
103
104 register PixelPacket
105 *q;
106
107 register unsigned char
108 *p;
109
110 size_t
111 height,
112 length,
113 width;
114
115 ssize_t
116 count,
117 y;
118
119 unsigned char
120 *pixels;
121
122 /*
123 Open image file.
124 */
125 assert(image_info != (const ImageInfo *) NULL);
126 assert(image_info->signature == MagickSignature);
127 if (image_info->debug != MagickFalse)
128 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
129 image_info->filename);
130 assert(exception != (ExceptionInfo *) NULL);
131 assert(exception->signature == MagickSignature);
132 image=AcquireImage(image_info);
133 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
134 if (status == MagickFalse)
135 {
136 image=DestroyImageList(image);
137 return((Image *) NULL);
138 }
139 /*
140 Read AAI Dune image.
141 */
142 width=ReadBlobLSBLong(image);
143 height=ReadBlobLSBLong(image);
144 if (EOFBlob(image) != MagickFalse)
145 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
146 if ((width == 0UL) || (height == 0UL))
147 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
148 do
149 {
150 /*
151 Convert AAI raster image to pixel packets.
152 */
153 image->columns=width;
154 image->rows=height;
155 image->depth=8;
156 if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
157 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
158 break;
159 pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
160 4*sizeof(*pixels));
161 if (pixels == (unsigned char *) NULL)
162 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
163 length=(size_t) 4*image->columns;
164 for (y=0; y < (ssize_t) image->rows; y++)
165 {
166 count=ReadBlob(image,length,pixels);
167 if ((size_t) count != length)
168 ThrowReaderException(CorruptImageError,"UnableToReadImageData");
169 p=pixels;
170 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
171 if (q == (PixelPacket *) NULL)
172 break;
173 for (x=0; x < (ssize_t) image->columns; x++)
174 {
cristy397bede2011-01-18 23:59:59 +0000[diff] [blame]175 q->blue=ScaleCharToQuantum(*p++);
cristy6ff1e932011-01-19 19:36:22 +0000[diff] [blame]176 q->green=ScaleCharToQuantum(*p++);
177 q->red=ScaleCharToQuantum(*p++);
cristy520bce82011-01-19 19:41:27 +0000[diff] [blame]178 if (*p == 254)
179 *p=255;
cristy397bede2011-01-18 23:59:59 +0000[diff] [blame]180 q->opacity=(Quantum) (QuantumRange-ScaleCharToQuantum(*p));
181 if (q->opacity != OpaqueOpacity)
182 image->matte=MagickTrue;
183 p++;
184 q++;
185 }
186 if (SyncAuthenticPixels(image,exception) == MagickFalse)
187 break;
188 if ((image->previous == (Image *) NULL) &&
189 (SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,image->rows) == MagickFalse))
190 break;
191 }
192 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
193 if (EOFBlob(image) != MagickFalse)
194 {
195 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
196 image->filename);
197 break;
198 }
199 /*
200 Proceed to next image.
201 */
202 if (image_info->number_scenes != 0)
203 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
204 break;
205 width=ReadBlobLSBLong(image);
206 height=ReadBlobLSBLong(image);
207 if ((width != 0UL) && (height != 0UL))
208 {
209 /*
210 Allocate next image structure.
211 */
212 AcquireNextImage(image_info,image);
213 if (GetNextImageInList(image) == (Image *) NULL)
214 {
215 image=DestroyImageList(image);
216 return((Image *) NULL);
217 }
218 image=SyncNextImageInList(image);
219 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
220 GetBlobSize(image));
221 if (status == MagickFalse)
222 break;
223 }
224 } while ((width != 0UL) && (height != 0UL));
225 (void) CloseBlob(image);
226 return(GetFirstImageInList(image));
227}
228
229/*
230%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
231% %
232% %
233% %
234% R e g i s t e r A A I I m a g e %
235% %
236% %
237% %
238%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
239%
240% RegisterAAIImage() adds attributes for the AAI Dune image format to the list
241% of supported formats. The attributes include the image format tag, a
242% method to read and/or write the format, whether the format supports the
243% saving of more than one frame to the same file or blob, whether the format
244% supports native in-memory I/O, and a brief description of the format.
245%
246% The format of the RegisterAAIImage method is:
247%
248% size_t RegisterAAIImage(void)
249%
250*/
251ModuleExport size_t RegisterAAIImage(void)
252{
253 MagickInfo
254 *entry;
255
256 entry=SetMagickInfo("AAI");
257 entry->decoder=(DecodeImageHandler *) ReadAAIImage;
258 entry->encoder=(EncodeImageHandler *) WriteAAIImage;
259 entry->description=ConstantString("AAI Dune image");
260 entry->module=ConstantString("AAI");
261 (void) RegisterMagickInfo(entry);
262 return(MagickImageCoderSignature);
263}
264
265/*
266%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
267% %
268% %
269% %
270% U n r e g i s t e r A A I I m a g e %
271% %
272% %
273% %
274%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
275%
276% UnregisterAAIImage() removes format registrations made by the
277% AAI module from the list of supported formats.
278%
279% The format of the UnregisterAAIImage method is:
280%
281% UnregisterAAIImage(void)
282%
283*/
284ModuleExport void UnregisterAAIImage(void)
285{
286 (void) UnregisterMagickInfo("AAI");
287}
288
289/*
290%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
291% %
292% %
293% %
294% W r i t e A A I I m a g e %
295% %
296% %
297% %
298%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
299%
300% WriteAAIImage() writes an image to a file in AAI Dune image format.
301%
302% The format of the WriteAAIImage method is:
303%
304% MagickBooleanType WriteAAIImage(const ImageInfo *image_info,Image *image)
305%
306% A description of each parameter follows.
307%
308% o image_info: the image info.
309%
310% o image: The image.
311%
312*/
313static MagickBooleanType WriteAAIImage(const ImageInfo *image_info,Image *image)
314{
315 MagickBooleanType
316 status;
317
318 MagickOffsetType
319 scene;
320
321 register const PixelPacket
322 *restrict p;
323
324 register ssize_t
325 x;
326
327 register unsigned char
328 *restrict q;
329
330 ssize_t
331 count,
332 y;
333
334 unsigned char
335 *pixels;
336
337 /*
338 Open output image file.
339 */
340 assert(image_info != (const ImageInfo *) NULL);
341 assert(image_info->signature == MagickSignature);
342 assert(image != (Image *) NULL);
343 assert(image->signature == MagickSignature);
344 if (image->debug != MagickFalse)
345 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
346 status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
347 if (status == MagickFalse)
348 return(status);
349 scene=0;
350 do
351 {
352 /*
353 Write AAI header.
354 */
355 if (image->colorspace != RGBColorspace)
356 (void) TransformImageColorspace(image,RGBColorspace);
357 (void) WriteBlobLSBLong(image,(unsigned int) image->columns);
358 (void) WriteBlobLSBLong(image,(unsigned int) image->rows);
359 /*
360 Allocate memory for pixels.
361 */
362 pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->columns,
363 4*sizeof(*pixels));
364 if (pixels == (unsigned char *) NULL)
365 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
366 /*
367 Convert MIFF to AAI raster pixels.
368 */
369 for (y=0; y < (ssize_t) image->rows; y++)
370 {
371 p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
372 if (p == (PixelPacket *) NULL)
373 break;
374 q=pixels;
375 for (x=0; x < (ssize_t) image->columns; x++)
376 {
cristy397bede2011-01-18 23:59:59 +0000[diff] [blame]377 *q++=ScaleQuantumToChar(GetBluePixelComponent(p));
cristy6ff1e932011-01-19 19:36:22 +0000[diff] [blame]378 *q++=ScaleQuantumToChar(GetGreenPixelComponent(p));
379 *q++=ScaleQuantumToChar(GetRedPixelComponent(p));
cristy397bede2011-01-18 23:59:59 +0000[diff] [blame]380 *q=ScaleQuantumToChar((Quantum) (QuantumRange-
381 (image->matte != MagickFalse ? p->opacity : OpaqueOpacity)));
382 if (*q == 255)
383 *q=254;
384 p++;
385 q++;
386 }
387 count=WriteBlob(image,(size_t) (q-pixels),pixels);
388 if (count != (ssize_t) (q-pixels))
389 break;
390 if ((image->previous == (Image *) NULL) &&
391 (SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,image->rows) == MagickFalse))
392 break;
393 }
394 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
395 if (GetNextImageInList(image) == (Image *) NULL)
396 break;
397 image=SyncNextImageInList(image);
398 status=SetImageProgress(image,SaveImagesTag,scene++,
399 GetImageListLength(image));
400 if (status == MagickFalse)
401 break;
402 } while (image_info->adjoin != MagickFalse);
403 (void) CloseBlob(image);
404 return(MagickTrue);
405}