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gerrit-public.fairphone.software / platform / external / ImageMagick / ce70c17bb6433add2eb069515a4f3105989e0662 / . / coders / avs.c
blob: c544d77416b5f758e3b044b51c9db0b1cae63677 [file] [log] [blame]
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]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% John Cristy %
17% July 1992 %
18% %
19% %
cristy16af1cb2009-12-11 21:38:29 +0000[diff] [blame]20% Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization %
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]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 WriteAVSImage(const ImageInfo *,Image *);
66
67/*
68%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
69% %
70% %
71% %
72% R e a d A V S I m a g e %
73% %
74% %
75% %
76%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
77%
78% ReadAVSImage() reads an AVS X 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 ReadAVSImage method is:
83%
84% Image *ReadAVSImage(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 *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
94{
95 Image
96 *image;
97
98 long
99 y;
100
101 MagickBooleanType
102 status;
103
104 register long
105 x;
106
107 register PixelPacket
108 *q;
109
110 register unsigned char
111 *p;
112
113 ssize_t
114 count;
115
116 size_t
117 length;
118
119 unsigned char
120 *pixels;
121
122 unsigned long
123 height,
124 width;
125
126 /*
127 Open image file.
128 */
129 assert(image_info != (const ImageInfo *) NULL);
130 assert(image_info->signature == MagickSignature);
131 if (image_info->debug != MagickFalse)
132 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
133 image_info->filename);
134 assert(exception != (ExceptionInfo *) NULL);
135 assert(exception->signature == MagickSignature);
136 image=AcquireImage(image_info);
137 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
138 if (status == MagickFalse)
139 {
140 image=DestroyImageList(image);
141 return((Image *) NULL);
142 }
143 /*
144 Read AVS X image.
145 */
146 width=ReadBlobMSBLong(image);
147 height=ReadBlobMSBLong(image);
148 if (EOFBlob(image) != MagickFalse)
149 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
150 if ((width == 0UL) || (height == 0UL))
151 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
152 do
153 {
154 /*
155 Convert AVS raster image to pixel packets.
156 */
157 image->columns=width;
158 image->rows=height;
159 image->depth=8;
160 if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
161 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
162 break;
163 pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
164 4*sizeof(*pixels));
165 if (pixels == (unsigned char *) NULL)
166 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
167 length=(size_t) 4*image->columns;
168 for (y=0; y < (long) image->rows; y++)
169 {
170 count=ReadBlob(image,length,pixels);
171 if ((size_t) count != length)
172 ThrowReaderException(CorruptImageError,"UnableToReadImageData");
173 p=pixels;
174 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
175 if (q == (PixelPacket *) NULL)
176 break;
177 for (x=0; x < (long) image->columns; x++)
178 {
179 q->opacity=(Quantum) (QuantumRange-ScaleCharToQuantum(*p++));
180 q->red=ScaleCharToQuantum(*p++);
181 q->green=ScaleCharToQuantum(*p++);
182 q->blue=ScaleCharToQuantum(*p++);
183 if (q->opacity != OpaqueOpacity)
184 image->matte=MagickTrue;
185 q++;
186 }
187 if (SyncAuthenticPixels(image,exception) == MagickFalse)
188 break;
189 if ((image->previous == (Image *) NULL) &&
190 (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse))
191 break;
192 }
193 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
194 if (EOFBlob(image) != MagickFalse)
195 {
196 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
197 image->filename);
198 break;
199 }
200 /*
201 Proceed to next image.
202 */
203 if (image_info->number_scenes != 0)
204 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
205 break;
206 width=ReadBlobMSBLong(image);
207 height=ReadBlobMSBLong(image);
208 if ((width != 0UL) && (height != 0UL))
209 {
210 /*
211 Allocate next image structure.
212 */
213 AcquireNextImage(image_info,image);
214 if (GetNextImageInList(image) == (Image *) NULL)
215 {
216 image=DestroyImageList(image);
217 return((Image *) NULL);
218 }
219 image=SyncNextImageInList(image);
220 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
221 GetBlobSize(image));
222 if (status == MagickFalse)
223 break;
224 }
225 } while ((width != 0UL) && (height != 0UL));
226 (void) CloseBlob(image);
227 return(GetFirstImageInList(image));
228}
229
230/*
231%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
232% %
233% %
234% %
235% R e g i s t e r A V S I m a g e %
236% %
237% %
238% %
239%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
240%
241% RegisterAVSImage() adds attributes for the AVS X image format to the list
242% of supported formats. The attributes include the image format tag, a
243% method to read and/or write the format, whether the format supports the
244% saving of more than one frame to the same file or blob, whether the format
245% supports native in-memory I/O, and a brief description of the format.
246%
247% The format of the RegisterAVSImage method is:
248%
249% unsigned long RegisterAVSImage(void)
250%
251*/
252ModuleExport unsigned long RegisterAVSImage(void)
253{
254 MagickInfo
255 *entry;
256
257 entry=SetMagickInfo("AVS");
258 entry->decoder=(DecodeImageHandler *) ReadAVSImage;
259 entry->encoder=(EncodeImageHandler *) WriteAVSImage;
260 entry->description=ConstantString("AVS X image");
261 entry->module=ConstantString("AVS");
262 (void) RegisterMagickInfo(entry);
263 return(MagickImageCoderSignature);
264}
265
266/*
267%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
268% %
269% %
270% %
271% U n r e g i s t e r A V S I m a g e %
272% %
273% %
274% %
275%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
276%
277% UnregisterAVSImage() removes format registrations made by the
278% AVS module from the list of supported formats.
279%
280% The format of the UnregisterAVSImage method is:
281%
282% UnregisterAVSImage(void)
283%
284*/
285ModuleExport void UnregisterAVSImage(void)
286{
287 (void) UnregisterMagickInfo("AVS");
288}
289
290/*
291%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
292% %
293% %
294% %
295% W r i t e A V S I m a g e %
296% %
297% %
298% %
299%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
300%
301% WriteAVSImage() writes an image to a file in AVS X image format.
302%
303% The format of the WriteAVSImage method is:
304%
305% MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image)
306%
307% A description of each parameter follows.
308%
309% o image_info: the image info.
310%
311% o image: The image.
312%
313*/
314static MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image)
315{
316 MagickBooleanType
317 status;
318
319 MagickOffsetType
320 scene;
321
322 register const PixelPacket
323 *p;
324
325 register long
326 x,
327 y;
328
329 register unsigned char
330 *q;
331
332 ssize_t
333 count;
334
335 unsigned char
336 *pixels;
337
338 /*
339 Open output image file.
340 */
341 assert(image_info != (const ImageInfo *) NULL);
342 assert(image_info->signature == MagickSignature);
343 assert(image != (Image *) NULL);
344 assert(image->signature == MagickSignature);
345 if (image->debug != MagickFalse)
346 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
347 status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
348 if (status == MagickFalse)
349 return(status);
350 scene=0;
351 do
352 {
353 /*
354 Write AVS header.
355 */
356 if (image->colorspace != RGBColorspace)
357 (void) TransformImageColorspace(image,RGBColorspace);
358 (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
359 (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
360 /*
361 Allocate memory for pixels.
362 */
363 pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->columns,
364 4*sizeof(*pixels));
365 if (pixels == (unsigned char *) NULL)
366 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
367 /*
368 Convert MIFF to AVS raster pixels.
369 */
370 for (y=0; y < (long) image->rows; y++)
371 {
372 p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
373 if (p == (PixelPacket *) NULL)
374 break;
375 q=pixels;
376 for (x=0; x < (long) image->columns; x++)
377 {
378 *q++=ScaleQuantumToChar((Quantum) (QuantumRange-
379 (image->matte != MagickFalse ? p->opacity : OpaqueOpacity)));
cristyce70c172010-01-07 17:15:30 +0000[diff] [blame^]380 *q++=ScaleQuantumToChar(GetRedPixelComponent(p));
381 *q++=ScaleQuantumToChar(GetGreenPixelComponent(p));
382 *q++=ScaleQuantumToChar(GetBluePixelComponent(p));
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]383 p++;
384 }
385 count=WriteBlob(image,(size_t) (q-pixels),pixels);
386 if (count != (ssize_t) (q-pixels))
387 break;
388 if ((image->previous == (Image *) NULL) &&
389 (SetImageProgress(image,SaveImageTag,y,image->rows) == MagickFalse))
390 break;
391 }
392 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
393 if (GetNextImageInList(image) == (Image *) NULL)
394 break;
395 image=SyncNextImageInList(image);
396 status=SetImageProgress(image,SaveImagesTag,scene++,
397 GetImageListLength(image));
398 if (status == MagickFalse)
399 break;
400 } while (image_info->adjoin != MagickFalse);
401 (void) CloseBlob(image);
402 return(MagickTrue);
403}