1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % Y Y U U V V %
7 % Y Y U U V V %
8 % Y U U V V %
9 % Y U U V V %
10 % Y UUU V %
11 % %
12 % %
13 % Read/Write Raw CCIR 601 4:1:1 or 4:2:2 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/constitute.h"
48 #include "MagickCore/exception.h"
49 #include "MagickCore/exception-private.h"
50 #include "MagickCore/geometry.h"
51 #include "MagickCore/image.h"
52 #include "MagickCore/image-private.h"
53 #include "MagickCore/list.h"
54 #include "MagickCore/magick.h"
55 #include "MagickCore/memory_.h"
56 #include "MagickCore/monitor.h"
57 #include "MagickCore/monitor-private.h"
58 #include "MagickCore/pixel-accessor.h"
59 #include "MagickCore/resize.h"
60 #include "MagickCore/quantum-private.h"
61 #include "MagickCore/static.h"
62 #include "MagickCore/string_.h"
63 #include "MagickCore/module.h"
64 #include "MagickCore/utility.h"
65
66 /*
67 Forward declarations.
68 */
69 static MagickBooleanType
70 WriteYUVImage(const ImageInfo *,Image *,ExceptionInfo *);
71
72 /*
73 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
74 % %
75 % %
76 % %
77 % R e a d Y U V I m a g e %
78 % %
79 % %
80 % %
81 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
82 %
83 % ReadYUVImage() reads an image with digital YUV (CCIR 601 4:1:1, plane
84 % or partition interlaced, or 4:2:2 plane, partition interlaced or
85 % noninterlaced) bytes and returns it. It allocates the memory necessary
86 % for the new Image structure and returns a pointer to the new image.
87 %
88 % The format of the ReadYUVImage method is:
89 %
90 % Image *ReadYUVImage(const ImageInfo *image_info,ExceptionInfo *exception)
91 %
92 % A description of each parameter follows:
93 %
94 % o image_info: the image info.
95 %
96 % o exception: return any errors or warnings in this structure.
97 %
98 */
ReadYUVImage(const ImageInfo * image_info,ExceptionInfo * exception)99 static Image *ReadYUVImage(const ImageInfo *image_info,ExceptionInfo *exception)
100 {
101 Image
102 *chroma_image,
103 *image,
104 *resize_image;
105
106 InterlaceType
107 interlace;
108
109 MagickBooleanType
110 status;
111
112 register const Quantum
113 *chroma_pixels;
114
115 register ssize_t
116 x;
117
118 register Quantum
119 *q;
120
121 register unsigned char
122 *p;
123
124 ssize_t
125 count,
126 horizontal_factor,
127 quantum,
128 vertical_factor,
129 y;
130
131 unsigned char
132 *scanline;
133
134 /*
135 Allocate image structure.
136 */
137 assert(image_info != (const ImageInfo *) NULL);
138 assert(image_info->signature == MagickCoreSignature);
139 if (image_info->debug != MagickFalse)
140 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
141 image_info->filename);
142 assert(exception != (ExceptionInfo *) NULL);
143 assert(exception->signature == MagickCoreSignature);
144 image=AcquireImage(image_info,exception);
145 if ((image->columns == 0) || (image->rows == 0))
146 ThrowReaderException(OptionError,"MustSpecifyImageSize");
147 status=SetImageExtent(image,image->columns,image->rows,exception);
148 if (status == MagickFalse)
149 return(DestroyImageList(image));
150 quantum=image->depth <= 8 ? 1 : 2;
151 interlace=image_info->interlace;
152 horizontal_factor=2;
153 vertical_factor=2;
154 if (image_info->sampling_factor != (char *) NULL)
155 {
156 GeometryInfo
157 geometry_info;
158
159 MagickStatusType
160 flags;
161
162 flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
163 horizontal_factor=(ssize_t) geometry_info.rho;
164 vertical_factor=(ssize_t) geometry_info.sigma;
165 if ((flags & SigmaValue) == 0)
166 vertical_factor=horizontal_factor;
167 if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
168 (vertical_factor != 1) && (vertical_factor != 2))
169 ThrowReaderException(CorruptImageError,"UnexpectedSamplingFactor");
170 }
171 if ((interlace == UndefinedInterlace) ||
172 ((interlace == NoInterlace) && (vertical_factor == 2)))
173 {
174 interlace=NoInterlace; /* CCIR 4:2:2 */
175 if (vertical_factor == 2)
176 interlace=PlaneInterlace; /* CCIR 4:1:1 */
177 }
178 if (interlace != PartitionInterlace)
179 {
180 /*
181 Open image file.
182 */
183 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
184 if (status == MagickFalse)
185 {
186 image=DestroyImageList(image);
187 return((Image *) NULL);
188 }
189 if (DiscardBlobBytes(image,image->offset) == MagickFalse)
190 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
191 image->filename);
192 }
193 /*
194 Allocate memory for a scanline.
195 */
196 if (interlace == NoInterlace)
197 scanline=(unsigned char *) AcquireQuantumMemory((size_t) 2UL*
198 image->columns+2UL,quantum*sizeof(*scanline));
199 else
200 scanline=(unsigned char *) AcquireQuantumMemory(image->columns,
201 quantum*sizeof(*scanline));
202 if (scanline == (unsigned char *) NULL)
203 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
204 do
205 {
206 chroma_image=CloneImage(image,(image->columns+horizontal_factor-1)/
207 horizontal_factor,(image->rows+vertical_factor-1)/vertical_factor,
208 MagickTrue,exception);
209 if (chroma_image == (Image *) NULL)
210 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
211 /*
212 Convert raster image to pixel packets.
213 */
214 if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
215 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
216 break;
217 status=SetImageExtent(image,image->columns,image->rows,exception);
218 if (status == MagickFalse)
219 return(DestroyImageList(image));
220 if (interlace == PartitionInterlace)
221 {
222 AppendImageFormat("Y",image->filename);
223 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
224 if (status == MagickFalse)
225 {
226 image=DestroyImageList(image);
227 return((Image *) NULL);
228 }
229 }
230 for (y=0; y < (ssize_t) image->rows; y++)
231 {
232 register Quantum
233 *chroma_pixels;
234
235 if (interlace == NoInterlace)
236 {
237 if ((y > 0) || (GetPreviousImageInList(image) == (Image *) NULL))
238 count=ReadBlob(image,(size_t) (2*quantum*image->columns),scanline);
239 p=scanline;
240 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
241 if (q == (Quantum *) NULL)
242 break;
243 chroma_pixels=QueueAuthenticPixels(chroma_image,0,y,
244 chroma_image->columns,1,exception);
245 if (chroma_pixels == (Quantum *) NULL)
246 break;
247 for (x=0; x < (ssize_t) image->columns; x+=2)
248 {
249 SetPixelRed(image,0,chroma_pixels);
250 if (quantum == 1)
251 SetPixelGreen(image,ScaleCharToQuantum(*p++),chroma_pixels);
252 else
253 {
254 SetPixelGreen(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),
255 chroma_pixels);
256 p+=2;
257 }
258 if (quantum == 1)
259 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
260 else
261 {
262 SetPixelRed(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),q);
263 p+=2;
264 }
265 SetPixelGreen(image,0,q);
266 SetPixelBlue(image,0,q);
267 q+=GetPixelChannels(image);
268 SetPixelGreen(image,0,q);
269 SetPixelBlue(image,0,q);
270 if (quantum == 1)
271 SetPixelBlue(image,ScaleCharToQuantum(*p++),chroma_pixels);
272 else
273 {
274 SetPixelBlue(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),
275 chroma_pixels);
276 p+=2;
277 }
278 if (quantum == 1)
279 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
280 else
281 {
282 SetPixelRed(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),q);
283 p+=2;
284 }
285 chroma_pixels++;
286 q+=GetPixelChannels(image);
287 }
288 }
289 else
290 {
291 if ((y > 0) || (GetPreviousImageInList(image) == (Image *) NULL))
292 count=ReadBlob(image,(size_t) quantum*image->columns,scanline);
293 p=scanline;
294 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
295 if (q == (Quantum *) NULL)
296 break;
297 for (x=0; x < (ssize_t) image->columns; x++)
298 {
299 if (quantum == 1)
300 SetPixelRed(image,ScaleCharToQuantum(*p++),q);
301 else
302 {
303 SetPixelRed(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),q);
304 p+=2;
305 }
306 SetPixelGreen(image,0,q);
307 SetPixelBlue(image,0,q);
308 q+=GetPixelChannels(image);
309 }
310 }
311 if (SyncAuthenticPixels(image,exception) == MagickFalse)
312 break;
313 if (interlace == NoInterlace)
314 if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
315 break;
316 if (image->previous == (Image *) NULL)
317 {
318 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
319 image->rows);
320 if (status == MagickFalse)
321 break;
322 }
323 }
324 if (interlace == PartitionInterlace)
325 {
326 (void) CloseBlob(image);
327 AppendImageFormat("U",image->filename);
328 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
329 if (status == MagickFalse)
330 {
331 image=DestroyImageList(image);
332 return((Image *) NULL);
333 }
334 }
335 if (interlace != NoInterlace)
336 {
337 for (y=0; y < (ssize_t) chroma_image->rows; y++)
338 {
339 count=ReadBlob(image,(size_t) quantum*chroma_image->columns,scanline);
340 p=scanline;
341 q=QueueAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,
342 exception);
343 if (q == (Quantum *) NULL)
344 break;
345 for (x=0; x < (ssize_t) chroma_image->columns; x++)
346 {
347 SetPixelRed(chroma_image,0,q);
348 if (quantum == 1)
349 SetPixelGreen(chroma_image,ScaleCharToQuantum(*p++),q);
350 else
351 {
352 SetPixelGreen(chroma_image,ScaleShortToQuantum(((*p) << 8) |
353 *(p+1)),q);
354 p+=2;
355 }
356 SetPixelBlue(chroma_image,0,q);
357 q+=GetPixelChannels(chroma_image);
358 }
359 if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
360 break;
361 }
362 if (interlace == PartitionInterlace)
363 {
364 (void) CloseBlob(image);
365 AppendImageFormat("V",image->filename);
366 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
367 if (status == MagickFalse)
368 {
369 image=DestroyImageList(image);
370 return((Image *) NULL);
371 }
372 }
373 for (y=0; y < (ssize_t) chroma_image->rows; y++)
374 {
375 count=ReadBlob(image,(size_t) quantum*chroma_image->columns,scanline);
376 p=scanline;
377 q=GetAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,
378 exception);
379 if (q == (Quantum *) NULL)
380 break;
381 for (x=0; x < (ssize_t) chroma_image->columns; x++)
382 {
383 if (quantum == 1)
384 SetPixelBlue(chroma_image,ScaleCharToQuantum(*p++),q);
385 else
386 {
387 SetPixelBlue(chroma_image,ScaleShortToQuantum(((*p) << 8) |
388 *(p+1)),q);
389 p+=2;
390 }
391 q+=GetPixelChannels(chroma_image);
392 }
393 if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
394 break;
395 }
396 }
397 /*
398 Scale image.
399 */
400 resize_image=ResizeImage(chroma_image,image->columns,image->rows,
401 TriangleFilter,exception);
402 chroma_image=DestroyImage(chroma_image);
403 if (resize_image == (Image *) NULL)
404 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
405 for (y=0; y < (ssize_t) image->rows; y++)
406 {
407 q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
408 chroma_pixels=GetVirtualPixels(resize_image,0,y,resize_image->columns,1,
409 exception);
410 if ((q == (Quantum *) NULL) ||
411 (chroma_pixels == (const Quantum *) NULL))
412 break;
413 for (x=0; x < (ssize_t) image->columns; x++)
414 {
415 SetPixelGreen(image,GetPixelGreen(image,chroma_pixels),q);
416 SetPixelBlue(image,GetPixelBlue(image,chroma_pixels),q);
417 chroma_pixels++;
418 q+=GetPixelChannels(image);
419 }
420 if (SyncAuthenticPixels(image,exception) == MagickFalse)
421 break;
422 }
423 resize_image=DestroyImage(resize_image);
424 SetImageColorspace(image,YCbCrColorspace,exception);
425 if (interlace == PartitionInterlace)
426 (void) CopyMagickString(image->filename,image_info->filename,
427 MagickPathExtent);
428 if (EOFBlob(image) != MagickFalse)
429 {
430 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
431 image->filename);
432 break;
433 }
434 /*
435 Proceed to next image.
436 */
437 if (image_info->number_scenes != 0)
438 if (image->scene >= (image_info->scene+image_info->number_scenes-1))
439 break;
440 if (interlace == NoInterlace)
441 count=ReadBlob(image,(size_t) (2*quantum*image->columns),scanline);
442 else
443 count=ReadBlob(image,(size_t) quantum*image->columns,scanline);
444 if (count != 0)
445 {
446 /*
447 Allocate next image structure.
448 */
449 AcquireNextImage(image_info,image,exception);
450 if (GetNextImageInList(image) == (Image *) NULL)
451 {
452 image=DestroyImageList(image);
453 return((Image *) NULL);
454 }
455 image=SyncNextImageInList(image);
456 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
457 GetBlobSize(image));
458 if (status == MagickFalse)
459 break;
460 }
461 } while (count != 0);
462 scanline=(unsigned char *) RelinquishMagickMemory(scanline);
463 (void) CloseBlob(image);
464 return(GetFirstImageInList(image));
465 }
466
467 /*
468 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
469 % %
470 % %
471 % %
472 % R e g i s t e r Y U V I m a g e %
473 % %
474 % %
475 % %
476 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
477 %
478 % RegisterYUVImage() adds attributes for the YUV image format to
479 % the list of supported formats. The attributes include the image format
480 % tag, a method to read and/or write the format, whether the format
481 % supports the saving of more than one frame to the same file or blob,
482 % whether the format supports native in-memory I/O, and a brief
483 % description of the format.
484 %
485 % The format of the RegisterYUVImage method is:
486 %
487 % size_t RegisterYUVImage(void)
488 %
489 */
RegisterYUVImage(void)490 ModuleExport size_t RegisterYUVImage(void)
491 {
492 MagickInfo
493 *entry;
494
495 entry=AcquireMagickInfo("YUV","YUV","CCIR 601 4:1:1 or 4:2:2");
496 entry->decoder=(DecodeImageHandler *) ReadYUVImage;
497 entry->encoder=(EncodeImageHandler *) WriteYUVImage;
498 entry->flags^=CoderAdjoinFlag;
499 entry->flags|=CoderRawSupportFlag;
500 (void) RegisterMagickInfo(entry);
501 return(MagickImageCoderSignature);
502 }
503
504 /*
505 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
506 % %
507 % %
508 % %
509 % U n r e g i s t e r Y U V I m a g e %
510 % %
511 % %
512 % %
513 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
514 %
515 % UnregisterYUVImage() removes format registrations made by the
516 % YUV module from the list of supported formats.
517 %
518 % The format of the UnregisterYUVImage method is:
519 %
520 % UnregisterYUVImage(void)
521 %
522 */
UnregisterYUVImage(void)523 ModuleExport void UnregisterYUVImage(void)
524 {
525 (void) UnregisterMagickInfo("YUV");
526 }
527
528 /*
529 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
530 % %
531 % %
532 % %
533 % W r i t e Y U V I m a g e %
534 % %
535 % %
536 % %
537 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
538 %
539 % WriteYUVImage() writes an image to a file in the digital YUV
540 % (CCIR 601 4:1:1, plane or partition interlaced, or 4:2:2 plane, partition
541 % interlaced or noninterlaced) bytes and returns it.
542 %
543 % The format of the WriteYUVImage method is:
544 %
545 % MagickBooleanType WriteYUVImage(const ImageInfo *image_info,
546 % Image *image,ExceptionInfo *exception)
547 %
548 % A description of each parameter follows.
549 %
550 % o image_info: the image info.
551 %
552 % o image: The image.
553 %
554 % o exception: return any errors or warnings in this structure.
555 %
556 */
WriteYUVImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)557 static MagickBooleanType WriteYUVImage(const ImageInfo *image_info,Image *image,
558 ExceptionInfo *exception)
559 {
560 Image
561 *chroma_image,
562 *yuv_image;
563
564 InterlaceType
565 interlace;
566
567 MagickBooleanType
568 status;
569
570 MagickOffsetType
571 scene;
572
573 register const Quantum
574 *p,
575 *s;
576
577 register ssize_t
578 x;
579
580 size_t
581 height,
582 quantum,
583 width;
584
585 ssize_t
586 horizontal_factor,
587 vertical_factor,
588 y;
589
590 assert(image_info != (const ImageInfo *) NULL);
591 assert(image_info->signature == MagickCoreSignature);
592 assert(image != (Image *) NULL);
593 assert(image->signature == MagickCoreSignature);
594 if (image->debug != MagickFalse)
595 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
596 quantum=(size_t) (image->depth <= 8 ? 1 : 2);
597 interlace=image->interlace;
598 horizontal_factor=2;
599 vertical_factor=2;
600 if (image_info->sampling_factor != (char *) NULL)
601 {
602 GeometryInfo
603 geometry_info;
604
605 MagickStatusType
606 flags;
607
608 flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
609 horizontal_factor=(ssize_t) geometry_info.rho;
610 vertical_factor=(ssize_t) geometry_info.sigma;
611 if ((flags & SigmaValue) == 0)
612 vertical_factor=horizontal_factor;
613 if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
614 (vertical_factor != 1) && (vertical_factor != 2))
615 ThrowWriterException(CorruptImageError,"UnexpectedSamplingFactor");
616 }
617 if ((interlace == UndefinedInterlace) ||
618 ((interlace == NoInterlace) && (vertical_factor == 2)))
619 {
620 interlace=NoInterlace; /* CCIR 4:2:2 */
621 if (vertical_factor == 2)
622 interlace=PlaneInterlace; /* CCIR 4:1:1 */
623 }
624 if (interlace != PartitionInterlace)
625 {
626 /*
627 Open output image file.
628 */
629 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
630 if (status == MagickFalse)
631 return(status);
632 }
633 else
634 {
635 AppendImageFormat("Y",image->filename);
636 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
637 if (status == MagickFalse)
638 return(status);
639 }
640 scene=0;
641 do
642 {
643 /*
644 Sample image to an even width and height, if necessary.
645 */
646 image->depth=(size_t) (quantum == 1 ? 8 : 16);
647 width=image->columns+(image->columns & (horizontal_factor-1));
648 height=image->rows+(image->rows & (vertical_factor-1));
649 yuv_image=ResizeImage(image,width,height,TriangleFilter,exception);
650 if (yuv_image == (Image *) NULL)
651 {
652 (void) CloseBlob(image);
653 return(MagickFalse);
654 }
655 (void) TransformImageColorspace(yuv_image,YCbCrColorspace,exception);
656 /*
657 Downsample image.
658 */
659 chroma_image=ResizeImage(image,width/horizontal_factor,
660 height/vertical_factor,TriangleFilter,exception);
661 if (chroma_image == (Image *) NULL)
662 {
663 (void) CloseBlob(image);
664 return(MagickFalse);
665 }
666 (void) TransformImageColorspace(chroma_image,YCbCrColorspace,exception);
667 if (interlace == NoInterlace)
668 {
669 /*
670 Write noninterlaced YUV.
671 */
672 for (y=0; y < (ssize_t) yuv_image->rows; y++)
673 {
674 p=GetVirtualPixels(yuv_image,0,y,yuv_image->columns,1,exception);
675 if (p == (const Quantum *) NULL)
676 break;
677 s=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,
678 exception);
679 if (s == (const Quantum *) NULL)
680 break;
681 for (x=0; x < (ssize_t) yuv_image->columns; x++)
682 {
683 if (quantum == 1)
684 {
685 (void) WriteBlobByte(image,ScaleQuantumToChar(
686 GetPixelGreen(yuv_image,s)));
687 (void) WriteBlobByte(image,ScaleQuantumToChar(
688 GetPixelRed(yuv_image,p)));
689 p+=GetPixelChannels(yuv_image);
690 (void) WriteBlobByte(image,ScaleQuantumToChar(
691 GetPixelBlue(yuv_image,s)));
692 (void) WriteBlobByte(image,ScaleQuantumToChar(
693 GetPixelRed(yuv_image,p)));
694 }
695 else
696 {
697 (void) WriteBlobByte(image,ScaleQuantumToChar(
698 GetPixelGreen(yuv_image,s)));
699 (void) WriteBlobShort(image,ScaleQuantumToShort(
700 GetPixelRed(yuv_image,p)));
701 p+=GetPixelChannels(yuv_image);
702 (void) WriteBlobByte(image,ScaleQuantumToChar(
703 GetPixelBlue(yuv_image,s)));
704 (void) WriteBlobShort(image,ScaleQuantumToShort(
705 GetPixelRed(yuv_image,p)));
706 }
707 p+=GetPixelChannels(yuv_image);
708 s++;
709 x++;
710 }
711 if (image->previous == (Image *) NULL)
712 {
713 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
714 image->rows);
715 if (status == MagickFalse)
716 break;
717 }
718 }
719 yuv_image=DestroyImage(yuv_image);
720 }
721 else
722 {
723 /*
724 Initialize Y channel.
725 */
726 for (y=0; y < (ssize_t) yuv_image->rows; y++)
727 {
728 p=GetVirtualPixels(yuv_image,0,y,yuv_image->columns,1,exception);
729 if (p == (const Quantum *) NULL)
730 break;
731 for (x=0; x < (ssize_t) yuv_image->columns; x++)
732 {
733 if (quantum == 1)
734 (void) WriteBlobByte(image,ScaleQuantumToChar(
735 GetPixelRed(yuv_image,p)));
736 else
737 (void) WriteBlobShort(image,ScaleQuantumToShort(
738 GetPixelRed(yuv_image,p)));
739 p+=GetPixelChannels(yuv_image);
740 }
741 if (image->previous == (Image *) NULL)
742 {
743 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
744 image->rows);
745 if (status == MagickFalse)
746 break;
747 }
748 }
749 yuv_image=DestroyImage(yuv_image);
750 if (image->previous == (Image *) NULL)
751 {
752 status=SetImageProgress(image,SaveImageTag,1,3);
753 if (status == MagickFalse)
754 break;
755 }
756 /*
757 Initialize U channel.
758 */
759 if (interlace == PartitionInterlace)
760 {
761 (void) CloseBlob(image);
762 AppendImageFormat("U",image->filename);
763 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
764 if (status == MagickFalse)
765 return(status);
766 }
767 for (y=0; y < (ssize_t) chroma_image->rows; y++)
768 {
769 p=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,
770 exception);
771 if (p == (const Quantum *) NULL)
772 break;
773 for (x=0; x < (ssize_t) chroma_image->columns; x++)
774 {
775 if (quantum == 1)
776 (void) WriteBlobByte(image,ScaleQuantumToChar(
777 GetPixelGreen(chroma_image,p)));
778 else
779 (void) WriteBlobShort(image,ScaleQuantumToShort(
780 GetPixelGreen(chroma_image,p)));
781 p+=GetPixelChannels(chroma_image);
782 }
783 }
784 if (image->previous == (Image *) NULL)
785 {
786 status=SetImageProgress(image,SaveImageTag,2,3);
787 if (status == MagickFalse)
788 break;
789 }
790 /*
791 Initialize V channel.
792 */
793 if (interlace == PartitionInterlace)
794 {
795 (void) CloseBlob(image);
796 AppendImageFormat("V",image->filename);
797 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
798 if (status == MagickFalse)
799 return(status);
800 }
801 for (y=0; y < (ssize_t) chroma_image->rows; y++)
802 {
803 p=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,
804 exception);
805 if (p == (const Quantum *) NULL)
806 break;
807 for (x=0; x < (ssize_t) chroma_image->columns; x++)
808 {
809 if (quantum == 1)
810 (void) WriteBlobByte(image,ScaleQuantumToChar(
811 GetPixelBlue(chroma_image,p)));
812 else
813 (void) WriteBlobShort(image,ScaleQuantumToShort(
814 GetPixelBlue(chroma_image,p)));
815 p+=GetPixelChannels(chroma_image);
816 }
817 }
818 if (image->previous == (Image *) NULL)
819 {
820 status=SetImageProgress(image,SaveImageTag,2,3);
821 if (status == MagickFalse)
822 break;
823 }
824 }
825 chroma_image=DestroyImage(chroma_image);
826 if (interlace == PartitionInterlace)
827 (void) CopyMagickString(image->filename,image_info->filename,
828 MagickPathExtent);
829 if (GetNextImageInList(image) == (Image *) NULL)
830 break;
831 image=SyncNextImageInList(image);
832 status=SetImageProgress(image,SaveImagesTag,scene++,
833 GetImageListLength(image));
834 if (status == MagickFalse)
835 break;
836 } while (image_info->adjoin != MagickFalse);
837 (void) CloseBlob(image);
838 return(MagickTrue);
839 }
840