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Issue 1934113002: Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/ (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master
Patch Set: Created 4 years, 7 months ago
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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.or g/TR/html4/loose.dtd">
2 <!-- NewPage -->
3 <html lang="en">
4 <head>
5 <title>TJ</title>
6 <link rel="stylesheet" type="text/css" href="../../../stylesheet.css" title="Sty le">
7 </head>
8 <body>
9 <script type="text/javascript"><!--
10 if (location.href.indexOf('is-external=true') == -1) {
11 parent.document.title="TJ";
12 }
13 //-->
14 </script>
15 <noscript>
16 <div>JavaScript is disabled on your browser.</div>
17 </noscript>
18 <!-- ========= START OF TOP NAVBAR ======= -->
19 <div class="topNav"><a name="navbar_top">
20 <!-- -->
21 </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar _top_firstrow">
22 <!-- -->
23 </a>
24 <ul class="navList" title="Navigation">
25 <li><a href="../../../org/libjpegturbo/turbojpeg/package-summary.html">Package</ a></li>
26 <li class="navBarCell1Rev">Class</li>
27 <li><a href="package-tree.html">Tree</a></li>
28 <li><a href="../../../deprecated-list.html">Deprecated</a></li>
29 <li><a href="../../../index-all.html">Index</a></li>
30 <li><a href="../../../help-doc.html">Help</a></li>
31 </ul>
32 </div>
33 <div class="subNav">
34 <ul class="navList">
35 <li>Prev Class</li>
36 <li><a href="../../../org/libjpegturbo/turbojpeg/TJCompressor.html" title="class in org.libjpegturbo.turbojpeg"><span class="strong">Next Class</span></a></li>
37 </ul>
38 <ul class="navList">
39 <li><a href="../../../index.html?org/libjpegturbo/turbojpeg/TJ.html" target="_to p">Frames</a></li>
40 <li><a href="TJ.html" target="_top">No Frames</a></li>
41 </ul>
42 <ul class="navList" id="allclasses_navbar_top">
43 <li><a href="../../../allclasses-noframe.html">All Classes</a></li>
44 </ul>
45 <div>
46 <script type="text/javascript"><!--
47 allClassesLink = document.getElementById("allclasses_navbar_top");
48 if(window==top) {
49 allClassesLink.style.display = "block";
50 }
51 else {
52 allClassesLink.style.display = "none";
53 }
54 //-->
55 </script>
56 </div>
57 <div>
58 <ul class="subNavList">
59 <li>Summary:&nbsp;</li>
60 <li>Nested&nbsp;|&nbsp;</li>
61 <li><a href="#field_summary">Field</a>&nbsp;|&nbsp;</li>
62 <li><a href="#constructor_summary">Constr</a>&nbsp;|&nbsp;</li>
63 <li><a href="#method_summary">Method</a></li>
64 </ul>
65 <ul class="subNavList">
66 <li>Detail:&nbsp;</li>
67 <li><a href="#field_detail">Field</a>&nbsp;|&nbsp;</li>
68 <li><a href="#constructor_detail">Constr</a>&nbsp;|&nbsp;</li>
69 <li><a href="#method_detail">Method</a></li>
70 </ul>
71 </div>
72 <a name="skip-navbar_top">
73 <!-- -->
74 </a></div>
75 <!-- ========= END OF TOP NAVBAR ========= -->
76 <!-- ======== START OF CLASS DATA ======== -->
77 <div class="header">
78 <div class="subTitle">org.libjpegturbo.turbojpeg</div>
79 <h2 title="Class TJ" class="title">Class TJ</h2>
80 </div>
81 <div class="contentContainer">
82 <ul class="inheritance">
83 <li>java.lang.Object</li>
84 <li>
85 <ul class="inheritance">
86 <li>org.libjpegturbo.turbojpeg.TJ</li>
87 </ul>
88 </li>
89 </ul>
90 <div class="description">
91 <ul class="blockList">
92 <li class="blockList">
93 <hr>
94 <br>
95 <pre>public final class <span class="strong">TJ</span>
96 extends java.lang.Object</pre>
97 <div class="block">TurboJPEG utility class (cannot be instantiated)</div>
98 </li>
99 </ul>
100 </div>
101 <div class="summary">
102 <ul class="blockList">
103 <li class="blockList">
104 <!-- =========== FIELD SUMMARY =========== -->
105 <ul class="blockList">
106 <li class="blockList"><a name="field_summary">
107 <!-- -->
108 </a>
109 <h3>Field Summary</h3>
110 <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summar y="Field Summary table, listing fields, and an explanation">
111 <caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
112 <tr>
113 <th class="colFirst" scope="col">Modifier and Type</th>
114 <th class="colLast" scope="col">Field and Description</th>
115 </tr>
116 <tr class="altColor">
117 <td class="colFirst"><code>static int</code></td>
118 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#CS_CMYK">CS_CMYK</a></strong></code>
119 <div class="block">CMYK colorspace.</div>
120 </td>
121 </tr>
122 <tr class="rowColor">
123 <td class="colFirst"><code>static int</code></td>
124 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#CS_GRAY">CS_GRAY</a></strong></code>
125 <div class="block">Grayscale colorspace.</div>
126 </td>
127 </tr>
128 <tr class="altColor">
129 <td class="colFirst"><code>static int</code></td>
130 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#CS_RGB">CS_RGB</a></strong></code>
131 <div class="block">RGB colorspace.</div>
132 </td>
133 </tr>
134 <tr class="rowColor">
135 <td class="colFirst"><code>static int</code></td>
136 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#CS_YCbCr">CS_YCbCr</a></strong></code>
137 <div class="block">YCbCr colorspace.</div>
138 </td>
139 </tr>
140 <tr class="altColor">
141 <td class="colFirst"><code>static int</code></td>
142 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#CS_YCCK">CS_YCCK</a></strong></code>
143 <div class="block">YCCK colorspace.</div>
144 </td>
145 </tr>
146 <tr class="rowColor">
147 <td class="colFirst"><code>static int</code></td>
148 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_ACCURATEDCT">FLAG_ACCURATEDCT</a></strong></code>
149 <div class="block">Use the most accurate DCT/IDCT algorithm available in the und erlying
150 codec.</div>
151 </td>
152 </tr>
153 <tr class="altColor">
154 <td class="colFirst"><code>static int</code></td>
155 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_BOTTOMUP">FLAG_BOTTOMUP</a></strong></code>
156 <div class="block">The uncompressed source/destination image is stored in bottom -up (Windows,
157 OpenGL) order, not top-down (X11) order.</div>
158 </td>
159 </tr>
160 <tr class="rowColor">
161 <td class="colFirst"><code>static int</code></td>
162 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_FASTDCT">FLAG_FASTDCT</a></strong></code>
163 <div class="block">Use the fastest DCT/IDCT algorithm available in the underlyin g codec.</div>
164 </td>
165 </tr>
166 <tr class="altColor">
167 <td class="colFirst"><code>static int</code></td>
168 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_FASTUPSAMPLE">FLAG_FASTUPSAMPLE</a></strong></code>
169 <div class="block">When decompressing an image that was compressed using chromin ance
170 subsampling, use the fastest chrominance upsampling algorithm available in
171 the underlying codec.</div>
172 </td>
173 </tr>
174 <tr class="rowColor">
175 <td class="colFirst"><code>static int</code></td>
176 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_FORCEMMX">FLAG_FORCEMMX</a></strong></code>
177 <div class="block"><strong>Deprecated.</strong>&nbsp;</div>
178 </td>
179 </tr>
180 <tr class="altColor">
181 <td class="colFirst"><code>static int</code></td>
182 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_FORCESSE">FLAG_FORCESSE</a></strong></code>
183 <div class="block"><strong>Deprecated.</strong>&nbsp;</div>
184 </td>
185 </tr>
186 <tr class="rowColor">
187 <td class="colFirst"><code>static int</code></td>
188 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_FORCESSE2">FLAG_FORCESSE2</a></strong></code>
189 <div class="block"><strong>Deprecated.</strong>&nbsp;</div>
190 </td>
191 </tr>
192 <tr class="altColor">
193 <td class="colFirst"><code>static int</code></td>
194 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#FLAG_FORCESSE3">FLAG_FORCESSE3</a></strong></code>
195 <div class="block"><strong>Deprecated.</strong>&nbsp;</div>
196 </td>
197 </tr>
198 <tr class="rowColor">
199 <td class="colFirst"><code>static int</code></td>
200 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#NUMCS">NUMCS</a></strong></code>
201 <div class="block">The number of JPEG colorspaces</div>
202 </td>
203 </tr>
204 <tr class="altColor">
205 <td class="colFirst"><code>static int</code></td>
206 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#NUMPF">NUMPF</a></strong></code>
207 <div class="block">The number of pixel formats</div>
208 </td>
209 </tr>
210 <tr class="rowColor">
211 <td class="colFirst"><code>static int</code></td>
212 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#NUMSAMP">NUMSAMP</a></strong></code>
213 <div class="block">The number of chrominance subsampling options</div>
214 </td>
215 </tr>
216 <tr class="altColor">
217 <td class="colFirst"><code>static int</code></td>
218 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_ABGR">PF_ABGR</a></strong></code>
219 <div class="block">ABGR pixel format.</div>
220 </td>
221 </tr>
222 <tr class="rowColor">
223 <td class="colFirst"><code>static int</code></td>
224 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_ARGB">PF_ARGB</a></strong></code>
225 <div class="block">ARGB pixel format.</div>
226 </td>
227 </tr>
228 <tr class="altColor">
229 <td class="colFirst"><code>static int</code></td>
230 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_BGR">PF_BGR</a></strong></code>
231 <div class="block">BGR pixel format.</div>
232 </td>
233 </tr>
234 <tr class="rowColor">
235 <td class="colFirst"><code>static int</code></td>
236 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_BGRA">PF_BGRA</a></strong></code>
237 <div class="block">BGRA pixel format.</div>
238 </td>
239 </tr>
240 <tr class="altColor">
241 <td class="colFirst"><code>static int</code></td>
242 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_BGRX">PF_BGRX</a></strong></code>
243 <div class="block">BGRX pixel format.</div>
244 </td>
245 </tr>
246 <tr class="rowColor">
247 <td class="colFirst"><code>static int</code></td>
248 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_CMYK">PF_CMYK</a></strong></code>
249 <div class="block">CMYK pixel format.</div>
250 </td>
251 </tr>
252 <tr class="altColor">
253 <td class="colFirst"><code>static int</code></td>
254 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_GRAY">PF_GRAY</a></strong></code>
255 <div class="block">Grayscale pixel format.</div>
256 </td>
257 </tr>
258 <tr class="rowColor">
259 <td class="colFirst"><code>static int</code></td>
260 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_RGB">PF_RGB</a></strong></code>
261 <div class="block">RGB pixel format.</div>
262 </td>
263 </tr>
264 <tr class="altColor">
265 <td class="colFirst"><code>static int</code></td>
266 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_RGBA">PF_RGBA</a></strong></code>
267 <div class="block">RGBA pixel format.</div>
268 </td>
269 </tr>
270 <tr class="rowColor">
271 <td class="colFirst"><code>static int</code></td>
272 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_RGBX">PF_RGBX</a></strong></code>
273 <div class="block">RGBX pixel format.</div>
274 </td>
275 </tr>
276 <tr class="altColor">
277 <td class="colFirst"><code>static int</code></td>
278 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_XBGR">PF_XBGR</a></strong></code>
279 <div class="block">XBGR pixel format.</div>
280 </td>
281 </tr>
282 <tr class="rowColor">
283 <td class="colFirst"><code>static int</code></td>
284 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#PF_XRGB">PF_XRGB</a></strong></code>
285 <div class="block">XRGB pixel format.</div>
286 </td>
287 </tr>
288 <tr class="altColor">
289 <td class="colFirst"><code>static int</code></td>
290 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#SAMP_411">SAMP_411</a></strong></code>
291 <div class="block">4:1:1 chrominance subsampling.</div>
292 </td>
293 </tr>
294 <tr class="rowColor">
295 <td class="colFirst"><code>static int</code></td>
296 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#SAMP_420">SAMP_420</a></strong></code>
297 <div class="block">4:2:0 chrominance subsampling.</div>
298 </td>
299 </tr>
300 <tr class="altColor">
301 <td class="colFirst"><code>static int</code></td>
302 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#SAMP_422">SAMP_422</a></strong></code>
303 <div class="block">4:2:2 chrominance subsampling.</div>
304 </td>
305 </tr>
306 <tr class="rowColor">
307 <td class="colFirst"><code>static int</code></td>
308 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#SAMP_440">SAMP_440</a></strong></code>
309 <div class="block">4:4:0 chrominance subsampling.</div>
310 </td>
311 </tr>
312 <tr class="altColor">
313 <td class="colFirst"><code>static int</code></td>
314 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#SAMP_444">SAMP_444</a></strong></code>
315 <div class="block">4:4:4 chrominance subsampling (no chrominance subsampling).</ div>
316 </td>
317 </tr>
318 <tr class="rowColor">
319 <td class="colFirst"><code>static int</code></td>
320 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#SAMP_GRAY">SAMP_GRAY</a></strong></code>
321 <div class="block">Grayscale.</div>
322 </td>
323 </tr>
324 </table>
325 </li>
326 </ul>
327 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
328 <ul class="blockList">
329 <li class="blockList"><a name="constructor_summary">
330 <!-- -->
331 </a>
332 <h3>Constructor Summary</h3>
333 <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summar y="Constructor Summary table, listing constructors, and an explanation">
334 <caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
335 <tr>
336 <th class="colOne" scope="col">Constructor and Description</th>
337 </tr>
338 <tr class="altColor">
339 <td class="colOne"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/TJ .html#TJ()">TJ</a></strong>()</code>&nbsp;</td>
340 </tr>
341 </table>
342 </li>
343 </ul>
344 <!-- ========== METHOD SUMMARY =========== -->
345 <ul class="blockList">
346 <li class="blockList"><a name="method_summary">
347 <!-- -->
348 </a>
349 <h3>Method Summary</h3>
350 <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summar y="Method Summary table, listing methods, and an explanation">
351 <caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
352 <tr>
353 <th class="colFirst" scope="col">Modifier and Type</th>
354 <th class="colLast" scope="col">Method and Description</th>
355 </tr>
356 <tr class="altColor">
357 <td class="colFirst"><code>static int</code></td>
358 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#bufSize(int,%20int,%20int)">bufSize</a></strong>(int&nbsp;width,
359 int&nbsp;height,
360 int&nbsp;jpegSubsamp)</code>
361 <div class="block">Returns the maximum size of the buffer (in bytes) required to hold a JPEG
362 image with the given width, height, and level of chrominance subsampling.</div>
363 </td>
364 </tr>
365 <tr class="rowColor">
366 <td class="colFirst"><code>static int</code></td>
367 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#bufSizeYUV(int,%20int,%20int)">bufSizeYUV</a></strong>(int&nbsp;width,
368 int&nbsp;height,
369 int&nbsp;subsamp)</code>
370 <div class="block"><strong>Deprecated.</strong>&nbsp;
371 <div class="block"><i>Use <a href="../../../org/libjpegturbo/turbojpeg/TJ.html#b ufSizeYUV(int,%20int,%20int,%20int)"><code>bufSizeYUV(int, int, int, int)</code> </a> instead.</i></div>
372 </div>
373 </td>
374 </tr>
375 <tr class="altColor">
376 <td class="colFirst"><code>static int</code></td>
377 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#bufSizeYUV(int,%20int,%20int,%20int)">bufSizeYUV</a></strong>(int&nbsp;wi dth,
378 int&nbsp;pad,
379 int&nbsp;height,
380 int&nbsp;subsamp)</code>
381 <div class="block">Returns the size of the buffer (in bytes) required to hold a YUV planar
382 image with the given width, height, and level of chrominance subsampling.</div>
383 </td>
384 </tr>
385 <tr class="rowColor">
386 <td class="colFirst"><code>static int</code></td>
387 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getBlueOffset(int)">getBlueOffset</a></strong>(int&nbsp;pixelFormat)</cod e>
388 <div class="block">For the given pixel format, returns the number of bytes that the blue
389 component is offset from the start of the pixel.</div>
390 </td>
391 </tr>
392 <tr class="altColor">
393 <td class="colFirst"><code>static int</code></td>
394 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getGreenOffset(int)">getGreenOffset</a></strong>(int&nbsp;pixelFormat)</c ode>
395 <div class="block">For the given pixel format, returns the number of bytes that the green
396 component is offset from the start of the pixel.</div>
397 </td>
398 </tr>
399 <tr class="rowColor">
400 <td class="colFirst"><code>static int</code></td>
401 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getMCUHeight(int)">getMCUHeight</a></strong>(int&nbsp;subsamp)</code>
402 <div class="block">Returns the MCU block height for the given level of chrominan ce
403 subsampling.</div>
404 </td>
405 </tr>
406 <tr class="altColor">
407 <td class="colFirst"><code>static int</code></td>
408 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getMCUWidth(int)">getMCUWidth</a></strong>(int&nbsp;subsamp)</code>
409 <div class="block">Returns the MCU block width for the given level of chrominanc e
410 subsampling.</div>
411 </td>
412 </tr>
413 <tr class="rowColor">
414 <td class="colFirst"><code>static int</code></td>
415 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getPixelSize(int)">getPixelSize</a></strong>(int&nbsp;pixelFormat)</code>
416 <div class="block">Returns the pixel size (in bytes) for the given pixel format. </div>
417 </td>
418 </tr>
419 <tr class="altColor">
420 <td class="colFirst"><code>static int</code></td>
421 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getRedOffset(int)">getRedOffset</a></strong>(int&nbsp;pixelFormat)</code>
422 <div class="block">For the given pixel format, returns the number of bytes that the red
423 component is offset from the start of the pixel.</div>
424 </td>
425 </tr>
426 <tr class="rowColor">
427 <td class="colFirst"><code>static <a href="../../../org/libjpegturbo/turbojpeg/T JScalingFactor.html" title="class in org.libjpegturbo.turbojpeg">TJScalingFactor </a>[]</code></td>
428 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#getScalingFactors()">getScalingFactors</a></strong>()</code>
429 <div class="block">Returns a list of fractional scaling factors that the JPEG de compressor in
430 this implementation of TurboJPEG supports.</div>
431 </td>
432 </tr>
433 <tr class="altColor">
434 <td class="colFirst"><code>static int</code></td>
435 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#planeHeight(int,%20int,%20int)">planeHeight</a></strong>(int&nbsp;compone ntID,
436 int&nbsp;height,
437 int&nbsp;subsamp)</code>
438 <div class="block">Returns the plane height of a YUV image plane with the given parameters.</div>
439 </td>
440 </tr>
441 <tr class="rowColor">
442 <td class="colFirst"><code>static int</code></td>
443 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#planeSizeYUV(int,%20int,%20int,%20int,%20int)">planeSizeYUV</a></strong>( int&nbsp;componentID,
444 int&nbsp;width,
445 int&nbsp;stride,
446 int&nbsp;height,
447 int&nbsp;subsamp)</code>
448 <div class="block">Returns the size of the buffer (in bytes) required to hold a YUV image
449 plane with the given parameters.</div>
450 </td>
451 </tr>
452 <tr class="altColor">
453 <td class="colFirst"><code>static int</code></td>
454 <td class="colLast"><code><strong><a href="../../../org/libjpegturbo/turbojpeg/T J.html#planeWidth(int,%20int,%20int)">planeWidth</a></strong>(int&nbsp;component ID,
455 int&nbsp;width,
456 int&nbsp;subsamp)</code>
457 <div class="block">Returns the plane width of a YUV image plane with the given p arameters.</div>
458 </td>
459 </tr>
460 </table>
461 <ul class="blockList">
462 <li class="blockList"><a name="methods_inherited_from_class_java.lang.Object">
463 <!-- -->
464 </a>
465 <h3>Methods inherited from class&nbsp;java.lang.Object</h3>
466 <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
467 </ul>
468 </li>
469 </ul>
470 </li>
471 </ul>
472 </div>
473 <div class="details">
474 <ul class="blockList">
475 <li class="blockList">
476 <!-- ============ FIELD DETAIL =========== -->
477 <ul class="blockList">
478 <li class="blockList"><a name="field_detail">
479 <!-- -->
480 </a>
481 <h3>Field Detail</h3>
482 <a name="NUMSAMP">
483 <!-- -->
484 </a>
485 <ul class="blockList">
486 <li class="blockList">
487 <h4>NUMSAMP</h4>
488 <pre>public static final&nbsp;int NUMSAMP</pre>
489 <div class="block">The number of chrominance subsampling options</div>
490 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.NUMSAMP">Constant Field Values</a></d d></dl>
491 </li>
492 </ul>
493 <a name="SAMP_444">
494 <!-- -->
495 </a>
496 <ul class="blockList">
497 <li class="blockList">
498 <h4>SAMP_444</h4>
499 <pre>public static final&nbsp;int SAMP_444</pre>
500 <div class="block">4:4:4 chrominance subsampling (no chrominance subsampling). The JPEG
501 or YUV image will contain one chrominance component for every pixel in the
502 source image.</div>
503 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_444">Constant Field Values</a></ dd></dl>
504 </li>
505 </ul>
506 <a name="SAMP_422">
507 <!-- -->
508 </a>
509 <ul class="blockList">
510 <li class="blockList">
511 <h4>SAMP_422</h4>
512 <pre>public static final&nbsp;int SAMP_422</pre>
513 <div class="block">4:2:2 chrominance subsampling. The JPEG or YUV image will co ntain one
514 chrominance component for every 2x1 block of pixels in the source image.</div>
515 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_422">Constant Field Values</a></ dd></dl>
516 </li>
517 </ul>
518 <a name="SAMP_420">
519 <!-- -->
520 </a>
521 <ul class="blockList">
522 <li class="blockList">
523 <h4>SAMP_420</h4>
524 <pre>public static final&nbsp;int SAMP_420</pre>
525 <div class="block">4:2:0 chrominance subsampling. The JPEG or YUV image will co ntain one
526 chrominance component for every 2x2 block of pixels in the source image.</div>
527 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_420">Constant Field Values</a></ dd></dl>
528 </li>
529 </ul>
530 <a name="SAMP_GRAY">
531 <!-- -->
532 </a>
533 <ul class="blockList">
534 <li class="blockList">
535 <h4>SAMP_GRAY</h4>
536 <pre>public static final&nbsp;int SAMP_GRAY</pre>
537 <div class="block">Grayscale. The JPEG or YUV image will contain no chrominance components.</div>
538 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_GRAY">Constant Field Values</a>< /dd></dl>
539 </li>
540 </ul>
541 <a name="SAMP_440">
542 <!-- -->
543 </a>
544 <ul class="blockList">
545 <li class="blockList">
546 <h4>SAMP_440</h4>
547 <pre>public static final&nbsp;int SAMP_440</pre>
548 <div class="block">4:4:0 chrominance subsampling. The JPEG or YUV image will co ntain one
549 chrominance component for every 1x2 block of pixels in the source image.
550 Note that 4:4:0 subsampling is not fully accelerated in libjpeg-turbo.</div>
551 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_440">Constant Field Values</a></ dd></dl>
552 </li>
553 </ul>
554 <a name="SAMP_411">
555 <!-- -->
556 </a>
557 <ul class="blockList">
558 <li class="blockList">
559 <h4>SAMP_411</h4>
560 <pre>public static final&nbsp;int SAMP_411</pre>
561 <div class="block">4:1:1 chrominance subsampling. The JPEG or YUV image will co ntain one
562 chrominance component for every 4x1 block of pixels in the source image.
563 JPEG images compressed with 4:1:1 subsampling will be almost exactly the
564 same size as those compressed with 4:2:0 subsampling, and in the
565 aggregate, both subsampling methods produce approximately the same
566 perceptual quality. However, 4:1:1 is better able to reproduce sharp
567 horizontal features. Note that 4:1:1 subsampling is not fully accelerated
568 in libjpeg-turbo.</div>
569 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_411">Constant Field Values</a></ dd></dl>
570 </li>
571 </ul>
572 <a name="NUMPF">
573 <!-- -->
574 </a>
575 <ul class="blockList">
576 <li class="blockList">
577 <h4>NUMPF</h4>
578 <pre>public static final&nbsp;int NUMPF</pre>
579 <div class="block">The number of pixel formats</div>
580 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.NUMPF">Constant Field Values</a></dd> </dl>
581 </li>
582 </ul>
583 <a name="PF_RGB">
584 <!-- -->
585 </a>
586 <ul class="blockList">
587 <li class="blockList">
588 <h4>PF_RGB</h4>
589 <pre>public static final&nbsp;int PF_RGB</pre>
590 <div class="block">RGB pixel format. The red, green, and blue components in the image are
591 stored in 3-byte pixels in the order R, G, B from lowest to highest byte
592 address within each pixel.</div>
593 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_RGB">Constant Field Values</a></dd ></dl>
594 </li>
595 </ul>
596 <a name="PF_BGR">
597 <!-- -->
598 </a>
599 <ul class="blockList">
600 <li class="blockList">
601 <h4>PF_BGR</h4>
602 <pre>public static final&nbsp;int PF_BGR</pre>
603 <div class="block">BGR pixel format. The red, green, and blue components in the image are
604 stored in 3-byte pixels in the order B, G, R from lowest to highest byte
605 address within each pixel.</div>
606 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_BGR">Constant Field Values</a></dd ></dl>
607 </li>
608 </ul>
609 <a name="PF_RGBX">
610 <!-- -->
611 </a>
612 <ul class="blockList">
613 <li class="blockList">
614 <h4>PF_RGBX</h4>
615 <pre>public static final&nbsp;int PF_RGBX</pre>
616 <div class="block">RGBX pixel format. The red, green, and blue components in th e image are
617 stored in 4-byte pixels in the order R, G, B from lowest to highest byte
618 address within each pixel. The X component is ignored when compressing
619 and undefined when decompressing.</div>
620 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_RGBX">Constant Field Values</a></d d></dl>
621 </li>
622 </ul>
623 <a name="PF_BGRX">
624 <!-- -->
625 </a>
626 <ul class="blockList">
627 <li class="blockList">
628 <h4>PF_BGRX</h4>
629 <pre>public static final&nbsp;int PF_BGRX</pre>
630 <div class="block">BGRX pixel format. The red, green, and blue components in th e image are
631 stored in 4-byte pixels in the order B, G, R from lowest to highest byte
632 address within each pixel. The X component is ignored when compressing
633 and undefined when decompressing.</div>
634 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_BGRX">Constant Field Values</a></d d></dl>
635 </li>
636 </ul>
637 <a name="PF_XBGR">
638 <!-- -->
639 </a>
640 <ul class="blockList">
641 <li class="blockList">
642 <h4>PF_XBGR</h4>
643 <pre>public static final&nbsp;int PF_XBGR</pre>
644 <div class="block">XBGR pixel format. The red, green, and blue components in th e image are
645 stored in 4-byte pixels in the order R, G, B from highest to lowest byte
646 address within each pixel. The X component is ignored when compressing
647 and undefined when decompressing.</div>
648 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_XBGR">Constant Field Values</a></d d></dl>
649 </li>
650 </ul>
651 <a name="PF_XRGB">
652 <!-- -->
653 </a>
654 <ul class="blockList">
655 <li class="blockList">
656 <h4>PF_XRGB</h4>
657 <pre>public static final&nbsp;int PF_XRGB</pre>
658 <div class="block">XRGB pixel format. The red, green, and blue components in th e image are
659 stored in 4-byte pixels in the order B, G, R from highest to lowest byte
660 address within each pixel. The X component is ignored when compressing
661 and undefined when decompressing.</div>
662 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_XRGB">Constant Field Values</a></d d></dl>
663 </li>
664 </ul>
665 <a name="PF_GRAY">
666 <!-- -->
667 </a>
668 <ul class="blockList">
669 <li class="blockList">
670 <h4>PF_GRAY</h4>
671 <pre>public static final&nbsp;int PF_GRAY</pre>
672 <div class="block">Grayscale pixel format. Each 1-byte pixel represents a lumin ance
673 (brightness) level from 0 to 255.</div>
674 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_GRAY">Constant Field Values</a></d d></dl>
675 </li>
676 </ul>
677 <a name="PF_RGBA">
678 <!-- -->
679 </a>
680 <ul class="blockList">
681 <li class="blockList">
682 <h4>PF_RGBA</h4>
683 <pre>public static final&nbsp;int PF_RGBA</pre>
684 <div class="block">RGBA pixel format. This is the same as <a href="../../../org /libjpegturbo/turbojpeg/TJ.html#PF_RGBX"><code>PF_RGBX</code></a>, except that w hen
685 decompressing, the X byte is guaranteed to be 0xFF, which can be
686 interpreted as an opaque alpha channel.</div>
687 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_RGBA">Constant Field Values</a></d d></dl>
688 </li>
689 </ul>
690 <a name="PF_BGRA">
691 <!-- -->
692 </a>
693 <ul class="blockList">
694 <li class="blockList">
695 <h4>PF_BGRA</h4>
696 <pre>public static final&nbsp;int PF_BGRA</pre>
697 <div class="block">BGRA pixel format. This is the same as <a href="../../../org /libjpegturbo/turbojpeg/TJ.html#PF_BGRX"><code>PF_BGRX</code></a>, except that w hen
698 decompressing, the X byte is guaranteed to be 0xFF, which can be
699 interpreted as an opaque alpha channel.</div>
700 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_BGRA">Constant Field Values</a></d d></dl>
701 </li>
702 </ul>
703 <a name="PF_ABGR">
704 <!-- -->
705 </a>
706 <ul class="blockList">
707 <li class="blockList">
708 <h4>PF_ABGR</h4>
709 <pre>public static final&nbsp;int PF_ABGR</pre>
710 <div class="block">ABGR pixel format. This is the same as <a href="../../../org /libjpegturbo/turbojpeg/TJ.html#PF_XBGR"><code>PF_XBGR</code></a>, except that w hen
711 decompressing, the X byte is guaranteed to be 0xFF, which can be
712 interpreted as an opaque alpha channel.</div>
713 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_ABGR">Constant Field Values</a></d d></dl>
714 </li>
715 </ul>
716 <a name="PF_ARGB">
717 <!-- -->
718 </a>
719 <ul class="blockList">
720 <li class="blockList">
721 <h4>PF_ARGB</h4>
722 <pre>public static final&nbsp;int PF_ARGB</pre>
723 <div class="block">ARGB pixel format. This is the same as <a href="../../../org /libjpegturbo/turbojpeg/TJ.html#PF_XRGB"><code>PF_XRGB</code></a>, except that w hen
724 decompressing, the X byte is guaranteed to be 0xFF, which can be
725 interpreted as an opaque alpha channel.</div>
726 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_ARGB">Constant Field Values</a></d d></dl>
727 </li>
728 </ul>
729 <a name="PF_CMYK">
730 <!-- -->
731 </a>
732 <ul class="blockList">
733 <li class="blockList">
734 <h4>PF_CMYK</h4>
735 <pre>public static final&nbsp;int PF_CMYK</pre>
736 <div class="block">CMYK pixel format. Unlike RGB, which is an additive color mo del used
737 primarily for display, CMYK (Cyan/Magenta/Yellow/Key) is a subtractive
738 color model used primarily for printing. In the CMYK color model, the
739 value of each color component typically corresponds to an amount of cyan,
740 magenta, yellow, or black ink that is applied to a white background. In
741 order to convert between CMYK and RGB, it is necessary to use a color
742 management system (CMS.) A CMS will attempt to map colors within the
743 printer's gamut to perceptually similar colors in the display's gamut and
744 vice versa, but the mapping is typically not 1:1 or reversible, nor can it
745 be defined with a simple formula. Thus, such a conversion is out of scope
746 for a codec library. However, the TurboJPEG API allows for compressing
747 CMYK pixels into a YCCK JPEG image (see <a href="../../../org/libjpegturbo/turb ojpeg/TJ.html#CS_YCCK"><code>CS_YCCK</code></a>) and
748 decompressing YCCK JPEG images into CMYK pixels.</div>
749 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.PF_CMYK">Constant Field Values</a></d d></dl>
750 </li>
751 </ul>
752 <a name="NUMCS">
753 <!-- -->
754 </a>
755 <ul class="blockList">
756 <li class="blockList">
757 <h4>NUMCS</h4>
758 <pre>public static final&nbsp;int NUMCS</pre>
759 <div class="block">The number of JPEG colorspaces</div>
760 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.NUMCS">Constant Field Values</a></dd> </dl>
761 </li>
762 </ul>
763 <a name="CS_RGB">
764 <!-- -->
765 </a>
766 <ul class="blockList">
767 <li class="blockList">
768 <h4>CS_RGB</h4>
769 <pre>public static final&nbsp;int CS_RGB</pre>
770 <div class="block">RGB colorspace. When compressing the JPEG image, the R, G, a nd B
771 components in the source image are reordered into image planes, but no
772 colorspace conversion or subsampling is performed. RGB JPEG images can be
773 decompressed to any of the extended RGB pixel formats or grayscale, but
774 they cannot be decompressed to YUV images.</div>
775 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.CS_RGB">Constant Field Values</a></dd ></dl>
776 </li>
777 </ul>
778 <a name="CS_YCbCr">
779 <!-- -->
780 </a>
781 <ul class="blockList">
782 <li class="blockList">
783 <h4>CS_YCbCr</h4>
784 <pre>public static final&nbsp;int CS_YCbCr</pre>
785 <div class="block">YCbCr colorspace. YCbCr is not an absolute colorspace but ra ther a
786 mathematical transformation of RGB designed solely for storage and
787 transmission. YCbCr images must be converted to RGB before they can
788 actually be displayed. In the YCbCr colorspace, the Y (luminance)
789 component represents the black & white portion of the original image, and
790 the Cb and Cr (chrominance) components represent the color portion of the
791 original image. Originally, the analog equivalent of this transformation
792 allowed the same signal to drive both black & white and color televisions,
793 but JPEG images use YCbCr primarily because it allows the color data to be
794 optionally subsampled for the purposes of reducing bandwidth or disk
795 space. YCbCr is the most common JPEG colorspace, and YCbCr JPEG images
796 can be compressed from and decompressed to any of the extended RGB pixel
797 formats or grayscale, or they can be decompressed to YUV planar images.</div>
798 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.CS_YCbCr">Constant Field Values</a></ dd></dl>
799 </li>
800 </ul>
801 <a name="CS_GRAY">
802 <!-- -->
803 </a>
804 <ul class="blockList">
805 <li class="blockList">
806 <h4>CS_GRAY</h4>
807 <pre>public static final&nbsp;int CS_GRAY</pre>
808 <div class="block">Grayscale colorspace. The JPEG image retains only the lumina nce data (Y
809 component), and any color data from the source image is discarded.
810 Grayscale JPEG images can be compressed from and decompressed to any of
811 the extended RGB pixel formats or grayscale, or they can be decompressed
812 to YUV planar images.</div>
813 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.CS_GRAY">Constant Field Values</a></d d></dl>
814 </li>
815 </ul>
816 <a name="CS_CMYK">
817 <!-- -->
818 </a>
819 <ul class="blockList">
820 <li class="blockList">
821 <h4>CS_CMYK</h4>
822 <pre>public static final&nbsp;int CS_CMYK</pre>
823 <div class="block">CMYK colorspace. When compressing the JPEG image, the C, M, Y, and K
824 components in the source image are reordered into image planes, but no
825 colorspace conversion or subsampling is performed. CMYK JPEG images can
826 only be decompressed to CMYK pixels.</div>
827 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.CS_CMYK">Constant Field Values</a></d d></dl>
828 </li>
829 </ul>
830 <a name="CS_YCCK">
831 <!-- -->
832 </a>
833 <ul class="blockList">
834 <li class="blockList">
835 <h4>CS_YCCK</h4>
836 <pre>public static final&nbsp;int CS_YCCK</pre>
837 <div class="block">YCCK colorspace. YCCK (AKA "YCbCrK") is not an absolute colo rspace but
838 rather a mathematical transformation of CMYK designed solely for storage
839 and transmission. It is to CMYK as YCbCr is to RGB. CMYK pixels can be
840 reversibly transformed into YCCK, and as with YCbCr, the chrominance
841 components in the YCCK pixels can be subsampled without incurring major
842 perceptual loss. YCCK JPEG images can only be compressed from and
843 decompressed to CMYK pixels.</div>
844 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.CS_YCCK">Constant Field Values</a></d d></dl>
845 </li>
846 </ul>
847 <a name="FLAG_BOTTOMUP">
848 <!-- -->
849 </a>
850 <ul class="blockList">
851 <li class="blockList">
852 <h4>FLAG_BOTTOMUP</h4>
853 <pre>public static final&nbsp;int FLAG_BOTTOMUP</pre>
854 <div class="block">The uncompressed source/destination image is stored in bottom -up (Windows,
855 OpenGL) order, not top-down (X11) order.</div>
856 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_BOTTOMUP">Constant Field Values< /a></dd></dl>
857 </li>
858 </ul>
859 <a name="FLAG_FORCEMMX">
860 <!-- -->
861 </a>
862 <ul class="blockList">
863 <li class="blockList">
864 <h4>FLAG_FORCEMMX</h4>
865 <pre>@Deprecated
866 public static final&nbsp;int FLAG_FORCEMMX</pre>
867 <div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
868 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCEMMX">Constant Field Values< /a></dd></dl>
869 </li>
870 </ul>
871 <a name="FLAG_FORCESSE">
872 <!-- -->
873 </a>
874 <ul class="blockList">
875 <li class="blockList">
876 <h4>FLAG_FORCESSE</h4>
877 <pre>@Deprecated
878 public static final&nbsp;int FLAG_FORCESSE</pre>
879 <div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
880 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCESSE">Constant Field Values< /a></dd></dl>
881 </li>
882 </ul>
883 <a name="FLAG_FORCESSE2">
884 <!-- -->
885 </a>
886 <ul class="blockList">
887 <li class="blockList">
888 <h4>FLAG_FORCESSE2</h4>
889 <pre>@Deprecated
890 public static final&nbsp;int FLAG_FORCESSE2</pre>
891 <div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
892 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCESSE2">Constant Field Values </a></dd></dl>
893 </li>
894 </ul>
895 <a name="FLAG_FORCESSE3">
896 <!-- -->
897 </a>
898 <ul class="blockList">
899 <li class="blockList">
900 <h4>FLAG_FORCESSE3</h4>
901 <pre>@Deprecated
902 public static final&nbsp;int FLAG_FORCESSE3</pre>
903 <div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
904 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCESSE3">Constant Field Values </a></dd></dl>
905 </li>
906 </ul>
907 <a name="FLAG_FASTUPSAMPLE">
908 <!-- -->
909 </a>
910 <ul class="blockList">
911 <li class="blockList">
912 <h4>FLAG_FASTUPSAMPLE</h4>
913 <pre>public static final&nbsp;int FLAG_FASTUPSAMPLE</pre>
914 <div class="block">When decompressing an image that was compressed using chromin ance
915 subsampling, use the fastest chrominance upsampling algorithm available in
916 the underlying codec. The default is to use smooth upsampling, which
917 creates a smooth transition between neighboring chrominance components in
918 order to reduce upsampling artifacts in the decompressed image.</div>
919 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FASTUPSAMPLE">Constant Field Val ues</a></dd></dl>
920 </li>
921 </ul>
922 <a name="FLAG_FASTDCT">
923 <!-- -->
924 </a>
925 <ul class="blockList">
926 <li class="blockList">
927 <h4>FLAG_FASTDCT</h4>
928 <pre>public static final&nbsp;int FLAG_FASTDCT</pre>
929 <div class="block">Use the fastest DCT/IDCT algorithm available in the underlyin g codec. The
930 default if this flag is not specified is implementation-specific. For
931 example, the implementation of TurboJPEG for libjpeg[-turbo] uses the fast
932 algorithm by default when compressing, because this has been shown to have
933 only a very slight effect on accuracy, but it uses the accurate algorithm
934 when decompressing, because this has been shown to have a larger effect.</div>
935 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FASTDCT">Constant Field Values</ a></dd></dl>
936 </li>
937 </ul>
938 <a name="FLAG_ACCURATEDCT">
939 <!-- -->
940 </a>
941 <ul class="blockListLast">
942 <li class="blockList">
943 <h4>FLAG_ACCURATEDCT</h4>
944 <pre>public static final&nbsp;int FLAG_ACCURATEDCT</pre>
945 <div class="block">Use the most accurate DCT/IDCT algorithm available in the und erlying
946 codec. The default if this flag is not specified is
947 implementation-specific. For example, the implementation of TurboJPEG for
948 libjpeg[-turbo] uses the fast algorithm by default when compressing,
949 because this has been shown to have only a very slight effect on accuracy,
950 but it uses the accurate algorithm when decompressing, because this has
951 been shown to have a larger effect.</div>
952 <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant -values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_ACCURATEDCT">Constant Field Valu es</a></dd></dl>
953 </li>
954 </ul>
955 </li>
956 </ul>
957 <!-- ========= CONSTRUCTOR DETAIL ======== -->
958 <ul class="blockList">
959 <li class="blockList"><a name="constructor_detail">
960 <!-- -->
961 </a>
962 <h3>Constructor Detail</h3>
963 <a name="TJ()">
964 <!-- -->
965 </a>
966 <ul class="blockListLast">
967 <li class="blockList">
968 <h4>TJ</h4>
969 <pre>public&nbsp;TJ()</pre>
970 </li>
971 </ul>
972 </li>
973 </ul>
974 <!-- ============ METHOD DETAIL ========== -->
975 <ul class="blockList">
976 <li class="blockList"><a name="method_detail">
977 <!-- -->
978 </a>
979 <h3>Method Detail</h3>
980 <a name="getMCUWidth(int)">
981 <!-- -->
982 </a>
983 <ul class="blockList">
984 <li class="blockList">
985 <h4>getMCUWidth</h4>
986 <pre>public static&nbsp;int&nbsp;getMCUWidth(int&nbsp;subsamp)</pre>
987 <div class="block">Returns the MCU block width for the given level of chrominanc e
988 subsampling.</div>
989 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>subsamp</code> - t he level of chrominance subsampling (one of
990 <code>SAMP_*</code>)</dd>
991 <dt><span class="strong">Returns:</span></dt><dd>the MCU block width for the giv en level of chrominance
992 subsampling.</dd></dl>
993 </li>
994 </ul>
995 <a name="getMCUHeight(int)">
996 <!-- -->
997 </a>
998 <ul class="blockList">
999 <li class="blockList">
1000 <h4>getMCUHeight</h4>
1001 <pre>public static&nbsp;int&nbsp;getMCUHeight(int&nbsp;subsamp)</pre>
1002 <div class="block">Returns the MCU block height for the given level of chrominan ce
1003 subsampling.</div>
1004 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>subsamp</code> - t he level of chrominance subsampling (one of
1005 <code>SAMP_*</code>)</dd>
1006 <dt><span class="strong">Returns:</span></dt><dd>the MCU block height for the gi ven level of chrominance
1007 subsampling.</dd></dl>
1008 </li>
1009 </ul>
1010 <a name="getPixelSize(int)">
1011 <!-- -->
1012 </a>
1013 <ul class="blockList">
1014 <li class="blockList">
1015 <h4>getPixelSize</h4>
1016 <pre>public static&nbsp;int&nbsp;getPixelSize(int&nbsp;pixelFormat)</pre>
1017 <div class="block">Returns the pixel size (in bytes) for the given pixel format. </div>
1018 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>pixelFormat</code> - the pixel format (one of <code>PF_*</code>)</dd>
1019 <dt><span class="strong">Returns:</span></dt><dd>the pixel size (in bytes) for t he given pixel format.</dd></dl>
1020 </li>
1021 </ul>
1022 <a name="getRedOffset(int)">
1023 <!-- -->
1024 </a>
1025 <ul class="blockList">
1026 <li class="blockList">
1027 <h4>getRedOffset</h4>
1028 <pre>public static&nbsp;int&nbsp;getRedOffset(int&nbsp;pixelFormat)</pre>
1029 <div class="block">For the given pixel format, returns the number of bytes that the red
1030 component is offset from the start of the pixel. For instance, if a pixel
1031 of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>,
1032 then the red component will be
1033 <code>pixel[TJ.getRedOffset(TJ.PF_BGRX)]</code>.</div>
1034 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>pixelFormat</code> - the pixel format (one of <code>PF_*</code>)</dd>
1035 <dt><span class="strong">Returns:</span></dt><dd>the red offset for the given pi xel format.</dd></dl>
1036 </li>
1037 </ul>
1038 <a name="getGreenOffset(int)">
1039 <!-- -->
1040 </a>
1041 <ul class="blockList">
1042 <li class="blockList">
1043 <h4>getGreenOffset</h4>
1044 <pre>public static&nbsp;int&nbsp;getGreenOffset(int&nbsp;pixelFormat)</pre>
1045 <div class="block">For the given pixel format, returns the number of bytes that the green
1046 component is offset from the start of the pixel. For instance, if a pixel
1047 of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>,
1048 then the green component will be
1049 <code>pixel[TJ.getGreenOffset(TJ.PF_BGRX)]</code>.</div>
1050 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>pixelFormat</code> - the pixel format (one of <code>PF_*</code>)</dd>
1051 <dt><span class="strong">Returns:</span></dt><dd>the green offset for the given pixel format.</dd></dl>
1052 </li>
1053 </ul>
1054 <a name="getBlueOffset(int)">
1055 <!-- -->
1056 </a>
1057 <ul class="blockList">
1058 <li class="blockList">
1059 <h4>getBlueOffset</h4>
1060 <pre>public static&nbsp;int&nbsp;getBlueOffset(int&nbsp;pixelFormat)</pre>
1061 <div class="block">For the given pixel format, returns the number of bytes that the blue
1062 component is offset from the start of the pixel. For instance, if a pixel
1063 of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>,
1064 then the blue component will be
1065 <code>pixel[TJ.getBlueOffset(TJ.PF_BGRX)]</code>.</div>
1066 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>pixelFormat</code> - the pixel format (one of <code>PF_*</code>)</dd>
1067 <dt><span class="strong">Returns:</span></dt><dd>the blue offset for the given p ixel format.</dd></dl>
1068 </li>
1069 </ul>
1070 <a name="bufSize(int, int, int)">
1071 <!-- -->
1072 </a>
1073 <ul class="blockList">
1074 <li class="blockList">
1075 <h4>bufSize</h4>
1076 <pre>public static&nbsp;int&nbsp;bufSize(int&nbsp;width,
1077 int&nbsp;height,
1078 int&nbsp;jpegSubsamp)</pre>
1079 <div class="block">Returns the maximum size of the buffer (in bytes) required to hold a JPEG
1080 image with the given width, height, and level of chrominance subsampling.</div>
1081 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>width</code> - the width (in pixels) of the JPEG image</dd><dd><code>height</code> - the height (i n pixels) of the JPEG image</dd><dd><code>jpegSubsamp</code> - the level of chro minance subsampling to be used when
1082 generating the JPEG image (one of <a href="../../../org/libjpegturbo/turbojpeg/ TJ.html" title="class in org.libjpegturbo.turbojpeg"><code>TJ.SAMP_*</code></a>) </dd>
1083 <dt><span class="strong">Returns:</span></dt><dd>the maximum size of the buffer (in bytes) required to hold a JPEG
1084 image with the given width, height, and level of chrominance subsampling.</dd>< /dl>
1085 </li>
1086 </ul>
1087 <a name="bufSizeYUV(int, int, int, int)">
1088 <!-- -->
1089 </a>
1090 <ul class="blockList">
1091 <li class="blockList">
1092 <h4>bufSizeYUV</h4>
1093 <pre>public static&nbsp;int&nbsp;bufSizeYUV(int&nbsp;width,
1094 int&nbsp;pad,
1095 int&nbsp;height,
1096 int&nbsp;subsamp)</pre>
1097 <div class="block">Returns the size of the buffer (in bytes) required to hold a YUV planar
1098 image with the given width, height, and level of chrominance subsampling.</div>
1099 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>width</code> - the width (in pixels) of the YUV image</dd><dd><code>pad</code> - the width of each line in each plane of the image is padded to
1100 the nearest multiple of this number of bytes (must be a power of 2.)</dd><dd><c ode>height</code> - the height (in pixels) of the YUV image</dd><dd><code>subsam p</code> - the level of chrominance subsampling used in the YUV
1101 image (one of <a href="../../../org/libjpegturbo/turbojpeg/TJ.html" title="clas s in org.libjpegturbo.turbojpeg"><code>TJ.SAMP_*</code></a>)</dd>
1102 <dt><span class="strong">Returns:</span></dt><dd>the size of the buffer (in byte s) required to hold a YUV planar
1103 image with the given width, height, and level of chrominance subsampling.</dd>< /dl>
1104 </li>
1105 </ul>
1106 <a name="bufSizeYUV(int, int, int)">
1107 <!-- -->
1108 </a>
1109 <ul class="blockList">
1110 <li class="blockList">
1111 <h4>bufSizeYUV</h4>
1112 <pre>@Deprecated
1113 public static&nbsp;int&nbsp;bufSizeYUV(int&nbsp;width,
1114 int&nbsp;height,
1115 int&nbsp;subsamp)</pre>
1116 <div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>Use <a href=" ../../../org/libjpegturbo/turbojpeg/TJ.html#bufSizeYUV(int,%20int,%20int,%20int) "><code>bufSizeYUV(int, int, int, int)</code></a> instead.</i></div>
1117 </li>
1118 </ul>
1119 <a name="planeSizeYUV(int, int, int, int, int)">
1120 <!-- -->
1121 </a>
1122 <ul class="blockList">
1123 <li class="blockList">
1124 <h4>planeSizeYUV</h4>
1125 <pre>public static&nbsp;int&nbsp;planeSizeYUV(int&nbsp;componentID,
1126 int&nbsp;width,
1127 int&nbsp;stride,
1128 int&nbsp;height,
1129 int&nbsp;subsamp)</pre>
1130 <div class="block">Returns the size of the buffer (in bytes) required to hold a YUV image
1131 plane with the given parameters.</div>
1132 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>componentID</code> - ID number of the image plane (0 = Y, 1 = U/Cb,
1133 2 = V/Cr)</dd><dd><code>width</code> - width (in pixels) of the YUV image. NOT E: this is the width
1134 of the whole image, not the plane width.</dd><dd><code>stride</code> - bytes pe r line in the image plane.</dd><dd><code>height</code> - height (in pixels) of t he YUV image. NOTE: this is the
1135 height of the whole image, not the plane height.</dd><dd><code>subsamp</code> - the level of chrominance subsampling used in the YUV
1136 image (one of <a href="../../../org/libjpegturbo/turbojpeg/TJ.html" title="clas s in org.libjpegturbo.turbojpeg"><code>TJ.SAMP_*</code></a>)</dd>
1137 <dt><span class="strong">Returns:</span></dt><dd>the size of the buffer (in byte s) required to hold a YUV planar
1138 image with the given parameters.</dd></dl>
1139 </li>
1140 </ul>
1141 <a name="planeWidth(int, int, int)">
1142 <!-- -->
1143 </a>
1144 <ul class="blockList">
1145 <li class="blockList">
1146 <h4>planeWidth</h4>
1147 <pre>public static&nbsp;int&nbsp;planeWidth(int&nbsp;componentID,
1148 int&nbsp;width,
1149 int&nbsp;subsamp)</pre>
1150 <div class="block">Returns the plane width of a YUV image plane with the given p arameters.
1151 Refer to <a href="../../../org/libjpegturbo/turbojpeg/YUVImage.html" title="cla ss in org.libjpegturbo.turbojpeg"><code>YUVImage</code></a> for a description of plane width.</div>
1152 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>componentID</code> - ID number of the image plane (0 = Y, 1 = U/Cb,
1153 2 = V/Cr)</dd><dd><code>width</code> - width (in pixels) of the YUV image</dd>< dd><code>subsamp</code> - the level of chrominance subsampling used in the YUV i mage
1154 (one of <a href="../../../org/libjpegturbo/turbojpeg/TJ.html" title="class in o rg.libjpegturbo.turbojpeg"><code>TJ.SAMP_*</code></a>)</dd>
1155 <dt><span class="strong">Returns:</span></dt><dd>the plane width of a YUV image plane with the given parameters.</dd></dl>
1156 </li>
1157 </ul>
1158 <a name="planeHeight(int, int, int)">
1159 <!-- -->
1160 </a>
1161 <ul class="blockList">
1162 <li class="blockList">
1163 <h4>planeHeight</h4>
1164 <pre>public static&nbsp;int&nbsp;planeHeight(int&nbsp;componentID,
1165 int&nbsp;height,
1166 int&nbsp;subsamp)</pre>
1167 <div class="block">Returns the plane height of a YUV image plane with the given parameters.
1168 Refer to <a href="../../../org/libjpegturbo/turbojpeg/YUVImage.html" title="cla ss in org.libjpegturbo.turbojpeg"><code>YUVImage</code></a> for a description of plane height.</div>
1169 <dl><dt><span class="strong">Parameters:</span></dt><dd><code>componentID</code> - ID number of the image plane (0 = Y, 1 = U/Cb,
1170 2 = V/Cr)</dd><dd><code>height</code> - height (in pixels) of the YUV image</dd ><dd><code>subsamp</code> - the level of chrominance subsampling used in the YUV image
1171 (one of <a href="../../../org/libjpegturbo/turbojpeg/TJ.html" title="class in o rg.libjpegturbo.turbojpeg"><code>TJ.SAMP_*</code></a>)</dd>
1172 <dt><span class="strong">Returns:</span></dt><dd>the plane height of a YUV image plane with the given parameters.</dd></dl>
1173 </li>
1174 </ul>
1175 <a name="getScalingFactors()">
1176 <!-- -->
1177 </a>
1178 <ul class="blockListLast">
1179 <li class="blockList">
1180 <h4>getScalingFactors</h4>
1181 <pre>public static&nbsp;<a href="../../../org/libjpegturbo/turbojpeg/TJScalingFa ctor.html" title="class in org.libjpegturbo.turbojpeg">TJScalingFactor</a>[]&nbs p;getScalingFactors()</pre>
1182 <div class="block">Returns a list of fractional scaling factors that the JPEG de compressor in
1183 this implementation of TurboJPEG supports.</div>
1184 <dl><dt><span class="strong">Returns:</span></dt><dd>a list of fractional scalin g factors that the JPEG decompressor in
1185 this implementation of TurboJPEG supports.</dd></dl>
1186 </li>
1187 </ul>
1188 </li>
1189 </ul>
1190 </li>
1191 </ul>
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