forked from ImageMagick/ImageMagick
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathimage-view.php
631 lines (456 loc) · 19.8 KB
/
image-view.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" />
<title>ImageMagick: MagickCore, C API for ImageMagick: Image View Methods</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta name="application-name" content="ImageMagick"/>
<meta name="description" content="ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves."/>
<meta name="application-url" content="http://www.imagemagick.org"/>
<meta name="generator" content="PHP"/>
<meta name="keywords" content="magickcore, c, api, for, imagemagick:, image, view, methods, ImageMagick, PerlMagick, image processing, image, photo, software, Magick++, OpenMP, convert"/>
<meta name="rating" content="GENERAL"/>
<meta name="robots" content="INDEX, FOLLOW"/>
<meta name="generator" content="ImageMagick Studio LLC"/>
<meta name="author" content="ImageMagick Studio LLC"/>
<meta name="revisit-after" content="2 DAYS"/>
<meta name="resource-type" content="document"/>
<meta name="copyright" content="Copyright (c) 1999-2015 ImageMagick Studio LLC"/>
<meta name="distribution" content="Global"/>
<meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1"/>
<link rel="icon" href="../image/wand.png">
<link rel="shortcut icon" href="../image/wand.ico">
<link rel="stylesheet" href="../css/magick.php">
</head>
<body>
<div class="main">
<div class="magick-masthead">
<div class="container">
<script async src="http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle"
style="display:block"
data-ad-client="ca-pub-3129977114552745"
data-ad-slot="6345125851"
data-ad-format="auto"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
<nav class="magick-nav">
<a class="magick-nav-item " href="../index.php">Home</a>
<a class="magick-nav-item " href="../script/binary-releases.php">Download</a>
<a class="magick-nav-item " href="../script/command-line-tools.php">Tools</a>
<a class="magick-nav-item " href="../script/command-line-options.php">Options</a>
<a class="magick-nav-item " href="../script/resources.php">Resources</a>
<a class="magick-nav-item " href="../script/api.php">Develop</a>
<a class="magick-nav-item " href="../script/search.php">Search</a>
<a class="magick-nav-item pull-right" href="http://www.imagemagick.org/discourse-server/">Community</a>
</nav>
</div>
</div>
<div class="container">
<div class="magick-header">
<p class="text-center"><a href="image-view.php#CloneImageView">CloneImageView</a> • <a href="image-view.php#DestroyImageView">DestroyImageView</a> • <a href="image-view.php#DuplexTransferImageViewIterator">DuplexTransferImageViewIterator</a> • <a href="image-view.php#GetImageViewAuthenticMetacontent">GetImageViewAuthenticMetacontent</a> • <a href="image-view.php#GetImageViewAuthenticPixels">GetImageViewAuthenticPixels</a> • <a href="image-view.php#GetImageViewException">GetImageViewException</a> • <a href="image-view.php#GetImageViewExtent">GetImageViewExtent</a> • <a href="image-view.php#GetImageViewImage">GetImageViewImage</a> • <a href="image-view.php#GetImageViewIterator">GetImageViewIterator</a> • <a href="image-view.php#GetImageViewVirtualMetacontent">GetImageViewVirtualMetacontent</a> • <a href="image-view.php#GetImageViewVirtualPixels">GetImageViewVirtualPixels</a> • <a href="image-view.php#IsImageView">IsImageView</a> • <a href="image-view.php#NewImageView">NewImageView</a> • <a href="image-view.php#NewImageViewRegion">NewImageViewRegion</a> • <a href="image-view.php#SetImageViewDescription">SetImageViewDescription</a> • <a href="image-view.php#SetImageViewIterator">SetImageViewIterator</a> • <a href="image-view.php#TransferImageViewIterator">TransferImageViewIterator</a> • <a href="image-view.php#UpdateImageViewIterator">UpdateImageViewIterator</a></p>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="CloneImageView">CloneImageView</a></h2>
<p>CloneImageView() makes a copy of the specified image view.</p>
<p>The format of the CloneImageView method is:</p>
<pre class="text">
ImageView *CloneImageView(const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="DestroyImageView">DestroyImageView</a></h2>
<p>DestroyImageView() deallocates memory associated with a image view.</p>
<p>The format of the DestroyImageView method is:</p>
<pre class="text">
ImageView *DestroyImageView(ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="DuplexTransferImageViewIterator">DuplexTransferImageViewIterator</a></h2>
<p>DuplexTransferImageViewIterator() iterates over three image views in parallel and calls your transfer method for each scanline of the view. The source and duplex pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. However, the destination image view is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted.</p>
<p>The callback signature is:</p>
<pre class="text">
MagickBooleanType DuplexTransferImageViewMethod(const ImageView *source,
const ImageView *duplex,ImageView *destination,const ssize_t y,
const int thread_id,void *context)
</pre>
<p>Use this pragma if the view is not single threaded:</p>
<pre class="text">
#pragma omp critical
</pre>
<p>to define a section of code in your callback transfer method that must be executed by a single thread at a time.</p>
<p>The format of the DuplexTransferImageViewIterator method is:</p>
<pre class="text">
MagickBooleanType DuplexTransferImageViewIterator(ImageView *source,
ImageView *duplex,ImageView *destination,
DuplexTransferImageViewMethod transfer,void *context)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>source</dt>
<dd>the source image view. </dd>
<dd> </dd>
<dt>duplex</dt>
<dd>the duplex image view. </dd>
<dd> </dd>
<dt>destination</dt>
<dd>the destination image view. </dd>
<dd> </dd>
<dt>transfer</dt>
<dd>the transfer callback method. </dd>
<dd> </dd>
<dt>context</dt>
<dd>the user defined context. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewAuthenticMetacontent">GetImageViewAuthenticMetacontent</a></h2>
<p>GetImageViewAuthenticMetacontent() returns the image view authentic meta-content.</p>
<p>The format of the GetImageViewAuthenticPixels method is:</p>
<pre class="text">
void *GetImageViewAuthenticMetacontent(
const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewAuthenticPixels">GetImageViewAuthenticPixels</a></h2>
<p>GetImageViewAuthenticPixels() returns the image view authentic pixels.</p>
<p>The format of the GetImageViewAuthenticPixels method is:</p>
<pre class="text">
Quantum *GetImageViewAuthenticPixels(const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewException">GetImageViewException</a></h2>
<p>GetImageViewException() returns the severity, reason, and description of any error that occurs when utilizing a image view.</p>
<p>The format of the GetImageViewException method is:</p>
<pre class="text">
char *GetImageViewException(const PixelImage *image_view,
ExceptionType *severity)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the pixel image_view. </dd>
<dd> </dd>
<dt>severity</dt>
<dd>the severity of the error is returned here. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewExtent">GetImageViewExtent</a></h2>
<p>GetImageViewExtent() returns the image view extent.</p>
<p>The format of the GetImageViewExtent method is:</p>
<pre class="text">
RectangleInfo GetImageViewExtent(const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewImage">GetImageViewImage</a></h2>
<p>GetImageViewImage() returns the image associated with the image view.</p>
<p>The format of the GetImageViewImage method is:</p>
<pre class="text">
MagickCore *GetImageViewImage(const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewIterator">GetImageViewIterator</a></h2>
<p>GetImageViewIterator() iterates over the image view in parallel and calls your get method for each scanline of the view. The pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. Any updates to the pixels in your callback are ignored.</p>
<p>The callback signature is:</p>
<pre class="text">
MagickBooleanType GetImageViewMethod(const ImageView *source,
const ssize_t y,const int thread_id,void *context)
</pre>
<p>Use this pragma if the view is not single threaded:</p>
<pre class="text">
#pragma omp critical
</pre>
<p>to define a section of code in your callback get method that must be executed by a single thread at a time.</p>
<p>The format of the GetImageViewIterator method is:</p>
<pre class="text">
MagickBooleanType GetImageViewIterator(ImageView *source,
GetImageViewMethod get,void *context)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>source</dt>
<dd>the source image view. </dd>
<dd> </dd>
<dt>get</dt>
<dd>the get callback method. </dd>
<dd> </dd>
<dt>context</dt>
<dd>the user defined context. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewVirtualMetacontent">GetImageViewVirtualMetacontent</a></h2>
<p>GetImageViewVirtualMetacontent() returns the image view virtual meta-content.</p>
<p>The format of the GetImageViewVirtualMetacontent method is:</p>
<pre class="text">
const void *GetImageViewVirtualMetacontent(
const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="GetImageViewVirtualPixels">GetImageViewVirtualPixels</a></h2>
<p>GetImageViewVirtualPixels() returns the image view virtual pixels.</p>
<p>The format of the GetImageViewVirtualPixels method is:</p>
<pre class="text">
const Quantum *GetImageViewVirtualPixels(const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="IsImageView">IsImageView</a></h2>
<p>IsImageView() returns MagickTrue if the the parameter is verified as a image view object.</p>
<p>The format of the IsImageView method is:</p>
<pre class="text">
MagickBooleanType IsImageView(const ImageView *image_view)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="NewImageView">NewImageView</a></h2>
<p>NewImageView() returns a image view required for all other methods in the Image View API.</p>
<p>The format of the NewImageView method is:</p>
<pre class="text">
ImageView *NewImageView(MagickCore *wand,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="NewImageViewRegion">NewImageViewRegion</a></h2>
<p>NewImageViewRegion() returns a image view required for all other methods in the Image View API.</p>
<p>The format of the NewImageViewRegion method is:</p>
<pre class="text">
ImageView *NewImageViewRegion(MagickCore *wand,const ssize_t x,
const ssize_t y,const size_t width,const size_t height,
ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>wand</dt>
<dd>the magick wand. </dd>
<dd> </dd>
<dt>x,y,columns,rows</dt>
<dd> These values define the perimeter of a extent of pixel_wands view. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="SetImageViewDescription">SetImageViewDescription</a></h2>
<p>SetImageViewDescription() associates a description with an image view.</p>
<p>The format of the SetImageViewDescription method is:</p>
<pre class="text">
void SetImageViewDescription(ImageView *image_view,
const char *description)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_view</dt>
<dd>the image view. </dd>
<dd> </dd>
<dt>description</dt>
<dd>the image view description. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="SetImageViewIterator">SetImageViewIterator</a></h2>
<p>SetImageViewIterator() iterates over the image view in parallel and calls your set method for each scanline of the view. The pixel extent is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension. The pixels are initiallly undefined and any settings you make in the callback method are automagically synced back to your image.</p>
<p>The callback signature is:</p>
<pre class="text">
MagickBooleanType SetImageViewMethod(ImageView *destination,
const ssize_t y,const int thread_id,void *context)
</pre>
<p>Use this pragma if the view is not single threaded:</p>
<pre class="text">
#pragma omp critical
</pre>
<p>to define a section of code in your callback set method that must be executed by a single thread at a time.</p>
<p>The format of the SetImageViewIterator method is:</p>
<pre class="text">
MagickBooleanType SetImageViewIterator(ImageView *destination,
SetImageViewMethod set,void *context)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>destination</dt>
<dd>the image view. </dd>
<dd> </dd>
<dt>set</dt>
<dd>the set callback method. </dd>
<dd> </dd>
<dt>context</dt>
<dd>the user defined context. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="TransferImageViewIterator">TransferImageViewIterator</a></h2>
<p>TransferImageViewIterator() iterates over two image views in parallel and calls your transfer method for each scanline of the view. The source pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. However, the destination image view is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted.</p>
<p>The callback signature is:</p>
<pre class="text">
MagickBooleanType TransferImageViewMethod(const ImageView *source,
ImageView *destination,const ssize_t y,const int thread_id,
void *context)
</pre>
<p>Use this pragma if the view is not single threaded:</p>
<pre class="text">
#pragma omp critical
</pre>
<p>to define a section of code in your callback transfer method that must be executed by a single thread at a time.</p>
<p>The format of the TransferImageViewIterator method is:</p>
<pre class="text">
MagickBooleanType TransferImageViewIterator(ImageView *source,
ImageView *destination,TransferImageViewMethod transfer,void *context)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>source</dt>
<dd>the source image view. </dd>
<dd> </dd>
<dt>destination</dt>
<dd>the destination image view. </dd>
<dd> </dd>
<dt>transfer</dt>
<dd>the transfer callback method. </dd>
<dd> </dd>
<dt>context</dt>
<dd>the user defined context. </dd>
<dd> </dd>
</dl>
<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/image-view_8c.html" id="UpdateImageViewIterator">UpdateImageViewIterator</a></h2>
<p>UpdateImageViewIterator() iterates over the image view in parallel and calls your update method for each scanline of the view. The pixel extent is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted. Updates to pixels in your callback are automagically synced back to the image.</p>
<p>The callback signature is:</p>
<pre class="text">
MagickBooleanType UpdateImageViewMethod(ImageView *source,
const ssize_t y,const int thread_id,void *context)
</pre>
<p>Use this pragma if the view is not single threaded:</p>
<pre class="text">
#pragma omp critical
</pre>
<p>to define a section of code in your callback update method that must be executed by a single thread at a time.</p>
<p>The format of the UpdateImageViewIterator method is:</p>
<pre class="text">
MagickBooleanType UpdateImageViewIterator(ImageView *source,
UpdateImageViewMethod update,void *context)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>source</dt>
<dd>the source image view. </dd>
<dd> </dd>
<dt>update</dt>
<dd>the update callback method. </dd>
<dd> </dd>
<dt>context</dt>
<dd>the user defined context. </dd>
<dd> </dd>
</dl>
</div>
<footer class="magick-footer">
<p><a href="../script/support.php">Donate</a> •
<a href="../script/sitemap.php">Sitemap</a> •
<a href="../script/links.php">Related</a> •
<a href="../script/architecture.php">Architecture</a>
</p>
<p><a href="image-view.php#">Back to top</a> •
<a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> •
<a href="../script/contact.php">Contact Us</a></p>
<p><small>© 1999-2015 ImageMagick Studio LLC</small></p>
</footer>
</div><!-- /.container -->
<script src="http://nextgen.imagemagick.org/js/magick.php"></script>
</div>
</body>
</html>