2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % Read/Write AVS X Image Format %
20 % Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
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. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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"
66 static MagickBooleanType
67 WriteAVSImage(const ImageInfo *,Image *,ExceptionInfo *);
70 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
74 % R e a d A V S I m a g e %
78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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.
84 % The format of the ReadAVSImage method is:
86 % Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
88 % A description of each parameter follows:
90 % o image_info: the image info.
92 % o exception: return any errors or warnings in this structure.
95 static Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
109 register unsigned char
127 assert(image_info != (const ImageInfo *) NULL);
128 assert(image_info->signature == MagickSignature);
129 if (image_info->debug != MagickFalse)
130 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
131 image_info->filename);
132 assert(exception != (ExceptionInfo *) NULL);
133 assert(exception->signature == MagickSignature);
134 image=AcquireImage(image_info,exception);
135 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
136 if (status == MagickFalse)
138 image=DestroyImageList(image);
139 return((Image *) NULL);
144 image->matte=MagickTrue;
145 width=ReadBlobMSBLong(image);
146 height=ReadBlobMSBLong(image);
147 if (EOFBlob(image) != MagickFalse)
148 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
149 if ((width == 0UL) || (height == 0UL))
150 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
154 Convert AVS raster image to pixel packets.
156 image->columns=width;
159 if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
160 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
162 pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
164 if (pixels == (unsigned char *) NULL)
165 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
166 length=(size_t) 4*image->columns;
167 for (y=0; y < (ssize_t) image->rows; y++)
169 count=ReadBlob(image,length,pixels);
170 if ((size_t) count != length)
171 ThrowReaderException(CorruptImageError,"UnableToReadImageData");
173 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
174 if (q == (Quantum *) NULL)
176 for (x=0; x < (ssize_t) image->columns; x++)
178 SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
179 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
180 SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
181 SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
182 q+=GetPixelChannels(image);
184 if (SyncAuthenticPixels(image,exception) == MagickFalse)
186 if (image->previous == (Image *) NULL)
188 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
190 if (status == MagickFalse)
194 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
195 if (EOFBlob(image) != MagickFalse)
197 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
202 Proceed to next image.
204 if (image_info->number_scenes != 0)
205 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
207 width=ReadBlobMSBLong(image);
208 height=ReadBlobMSBLong(image);
209 if ((width != 0UL) && (height != 0UL))
212 Allocate next image structure.
214 AcquireNextImage(image_info,image,exception);
215 if (GetNextImageInList(image) == (Image *) NULL)
217 image=DestroyImageList(image);
218 return((Image *) NULL);
220 image=SyncNextImageInList(image);
221 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
223 if (status == MagickFalse)
226 } while ((width != 0UL) && (height != 0UL));
227 (void) CloseBlob(image);
228 return(GetFirstImageInList(image));
232 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
236 % R e g i s t e r A V S I m a g e %
240 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
242 % RegisterAVSImage() adds attributes for the AVS X image format to the list
243 % of supported formats. The attributes include the image format tag, a
244 % method to read and/or write the format, whether the format supports the
245 % saving of more than one frame to the same file or blob, whether the format
246 % supports native in-memory I/O, and a brief description of the format.
248 % The format of the RegisterAVSImage method is:
250 % size_t RegisterAVSImage(void)
253 ModuleExport size_t RegisterAVSImage(void)
258 entry=SetMagickInfo("AVS");
259 entry->decoder=(DecodeImageHandler *) ReadAVSImage;
260 entry->encoder=(EncodeImageHandler *) WriteAVSImage;
261 entry->description=ConstantString("AVS X image");
262 entry->module=ConstantString("AVS");
263 (void) RegisterMagickInfo(entry);
264 return(MagickImageCoderSignature);
268 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
272 % U n r e g i s t e r A V S I m a g e %
276 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
278 % UnregisterAVSImage() removes format registrations made by the
279 % AVS module from the list of supported formats.
281 % The format of the UnregisterAVSImage method is:
283 % UnregisterAVSImage(void)
286 ModuleExport void UnregisterAVSImage(void)
288 (void) UnregisterMagickInfo("AVS");
292 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
296 % W r i t e A V S I m a g e %
300 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
302 % WriteAVSImage() writes an image to a file in AVS X image format.
304 % The format of the WriteAVSImage method is:
306 % MagickBooleanType WriteAVSImage(const ImageInfo *image_info,
307 % Image *image,ExceptionInfo *exception)
309 % A description of each parameter follows.
311 % o image_info: the image info.
313 % o image: The image.
315 % o exception: return any errors or warnings in this structure.
318 static MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image,
319 ExceptionInfo *exception)
327 register const Quantum
333 register unsigned char
344 Open output image file.
346 assert(image_info != (const ImageInfo *) NULL);
347 assert(image_info->signature == MagickSignature);
348 assert(image != (Image *) NULL);
349 assert(image->signature == MagickSignature);
350 if (image->debug != MagickFalse)
351 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
352 assert(exception != (ExceptionInfo *) NULL);
353 assert(exception->signature == MagickSignature);
354 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
355 if (status == MagickFalse)
363 if (IsRGBColorspace(image->colorspace) == MagickFalse)
364 (void) TransformImageColorspace(image,RGBColorspace,exception);
365 (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
366 (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
368 Allocate memory for pixels.
370 pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->columns,
372 if (pixels == (unsigned char *) NULL)
373 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
375 Convert MIFF to AVS raster pixels.
377 for (y=0; y < (ssize_t) image->rows; y++)
379 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
380 if (p == (const Quantum *) NULL)
383 for (x=0; x < (ssize_t) image->columns; x++)
385 *q++=ScaleQuantumToChar((Quantum) (image->matte != MagickFalse ?
386 GetPixelAlpha(image,p) : OpaqueAlpha));
387 *q++=ScaleQuantumToChar(GetPixelRed(image,p));
388 *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
389 *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
390 p+=GetPixelChannels(image);
392 count=WriteBlob(image,(size_t) (q-pixels),pixels);
393 if (count != (ssize_t) (q-pixels))
395 if (image->previous == (Image *) NULL)
397 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
399 if (status == MagickFalse)
403 pixels=(unsigned char *) RelinquishMagickMemory(pixels);
404 if (GetNextImageInList(image) == (Image *) NULL)
406 image=SyncNextImageInList(image);
407 status=SetImageProgress(image,SaveImagesTag,scene++,
408 GetImageListLength(image));
409 if (status == MagickFalse)
411 } while (image_info->adjoin != MagickFalse);
412 (void) CloseBlob(image);