chillerlan-QRCode-Common-ReedSolomonDecoder.html 48 KB

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  102. <li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan-qrcode-common.html">Common</a></li>
  103. </ul>
  104. <article class="phpdocumentor-element -class">
  105. <h2 class="phpdocumentor-content__title">
  106. ReedSolomonDecoder
  107. <div class="phpdocumentor-element__package">
  108. in package
  109. <ul class="phpdocumentor-breadcrumbs">
  110. <li class="phpdocumentor-breadcrumb"><a href="packages/Application.html">Application</a></li>
  111. </ul>
  112. </div>
  113. </h2>
  114. <aside class="phpdocumentor-element-found-in">
  115. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  116. :
  117. <span class="phpdocumentor-element-found-in__line">35</span>
  118. </aside>
  119. <p class="phpdocumentor-summary">Implements Reed-Solomon decoding</p>
  120. <section class="phpdocumentor-description"><p>The algorithm will not be explained here, but the following references were helpful
  121. in creating this implementation:</p>
  122. <ul>
  123. <li>Bruce Maggs &quot;Decoding Reed-Solomon Codes&quot; (see discussion of Forney's Formula)
  124. http://www.cs.cmu.edu/afs/cs.cmu.edu/project/pscico-guyb/realworld/www/rs_decode.ps</li>
  125. <li>J.I. Hall. &quot;Chapter 5. Generalized Reed-Solomon Codes&quot; (see discussion of Euclidean algorithm)
  126. https://users.math.msu.edu/users/halljo/classes/codenotes/GRS.pdf</li>
  127. </ul>
  128. <p>Much credit is due to William Rucklidge since portions of this code are an indirect
  129. port of his C++ Reed-Solomon implementation.</p>
  130. </section>
  131. <h5 class="phpdocumentor-tag-list__heading" id="tags">
  132. Tags
  133. <a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
  134. </h5>
  135. <dl class="phpdocumentor-tag-list">
  136. <dt class="phpdocumentor-tag-list__entry">
  137. <span class="phpdocumentor-tag__name">author</span>
  138. </dt>
  139. <dd class="phpdocumentor-tag-list__definition">
  140. <section class="phpdocumentor-description"><p>Sean Owen</p>
  141. </section>
  142. </dd>
  143. <dt class="phpdocumentor-tag-list__entry">
  144. <span class="phpdocumentor-tag__name">author</span>
  145. </dt>
  146. <dd class="phpdocumentor-tag-list__definition">
  147. <section class="phpdocumentor-description"><p>William Rucklidge</p>
  148. </section>
  149. </dd>
  150. <dt class="phpdocumentor-tag-list__entry">
  151. <span class="phpdocumentor-tag__name">author</span>
  152. </dt>
  153. <dd class="phpdocumentor-tag-list__definition">
  154. <section class="phpdocumentor-description"><p>sanfordsquires</p>
  155. </section>
  156. </dd>
  157. </dl>
  158. <h3 id="toc">
  159. Table of Contents
  160. <a href="#toc" class="headerlink"><i class="fas fa-link"></i></a>
  161. </h3>
  162. <dl class="phpdocumentor-table-of-contents">
  163. <dt class="phpdocumentor-table-of-contents__entry -property -private">
  164. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#property_eccLevel">$eccLevel</a>
  165. <span>
  166. &nbsp;: <a href="classes/chillerlan-QRCode-Common-EccLevel.html"><abbr title="\chillerlan\QRCode\Common\EccLevel">EccLevel</abbr></a> </span>
  167. </dt>
  168. <dd></dd>
  169. <dt class="phpdocumentor-table-of-contents__entry -property -private">
  170. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#property_version">$version</a>
  171. <span>
  172. &nbsp;: <a href="classes/chillerlan-QRCode-Common-Version.html"><abbr title="\chillerlan\QRCode\Common\Version">Version</abbr></a> </span>
  173. </dt>
  174. <dd></dd>
  175. <dt class="phpdocumentor-table-of-contents__entry -method -public">
  176. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method___construct">__construct()</a>
  177. <span>
  178. &nbsp;: mixed </span>
  179. </dt>
  180. <dd>ReedSolomonDecoder constructor</dd>
  181. <dt class="phpdocumentor-table-of-contents__entry -method -public">
  182. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_decode">decode()</a>
  183. <span>
  184. &nbsp;: <a href="classes/chillerlan-QRCode-Common-BitBuffer.html"><abbr title="\chillerlan\QRCode\Common\BitBuffer">BitBuffer</abbr></a> </span>
  185. </dt>
  186. <dd>Error-correct and copy data blocks together into a stream of bytes</dd>
  187. <dt class="phpdocumentor-table-of-contents__entry -method -private">
  188. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_correctErrors">correctErrors()</a>
  189. <span>
  190. &nbsp;: array&lt;string|int, mixed&gt; </span>
  191. </dt>
  192. <dd>Given data and error-correction codewords received, possibly corrupted by errors, attempts to
  193. correct the errors in-place using Reed-Solomon error correction.</dd>
  194. <dt class="phpdocumentor-table-of-contents__entry -method -private">
  195. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_decodeWords">decodeWords()</a>
  196. <span>
  197. &nbsp;: array&lt;string|int, int&gt; </span>
  198. </dt>
  199. <dd>Decodes given set of received codewords, which include both data and error-correction
  200. codewords. Really, this means it uses Reed-Solomon to detect and correct errors, in-place,
  201. in the input.</dd>
  202. <dt class="phpdocumentor-table-of-contents__entry -method -private">
  203. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_deinterleaveRawBytes">deinterleaveRawBytes()</a>
  204. <span>
  205. &nbsp;: array&lt;string|int, mixed&gt; </span>
  206. </dt>
  207. <dd>When QR Codes use multiple data blocks, they are actually interleaved.</dd>
  208. <dt class="phpdocumentor-table-of-contents__entry -method -private">
  209. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_findErrorLocations">findErrorLocations()</a>
  210. <span>
  211. &nbsp;: array&lt;string|int, mixed&gt; </span>
  212. </dt>
  213. <dd></dd>
  214. <dt class="phpdocumentor-table-of-contents__entry -method -private">
  215. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_findErrorMagnitudes">findErrorMagnitudes()</a>
  216. <span>
  217. &nbsp;: array&lt;string|int, mixed&gt; </span>
  218. </dt>
  219. <dd></dd>
  220. <dt class="phpdocumentor-table-of-contents__entry -method -private">
  221. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_runEuclideanAlgorithm">runEuclideanAlgorithm()</a>
  222. <span>
  223. &nbsp;: array&lt;string|int, <a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&gt; </span>
  224. </dt>
  225. <dd></dd>
  226. </dl>
  227. <section class="phpdocumentor-properties">
  228. <h3 class="phpdocumentor-elements__header" id="properties">
  229. Properties
  230. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#properties" class="headerlink"><i class="fas fa-link"></i></a>
  231. </h3>
  232. <article
  233. class="
  234. phpdocumentor-element
  235. -property
  236. -private
  237. "
  238. >
  239. <h4 class="phpdocumentor-element__name" id="property_eccLevel">
  240. $eccLevel
  241. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#property_eccLevel" class="headerlink"><i class="fas fa-link"></i></a>
  242. <span class="phpdocumentor-element__modifiers">
  243. </span>
  244. </h4>
  245. <aside class="phpdocumentor-element-found-in">
  246. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  247. :
  248. <span class="phpdocumentor-element-found-in__line">38</span>
  249. </aside>
  250. <code class="phpdocumentor-code phpdocumentor-signature ">
  251. <span class="phpdocumentor-signature__visibility">private</span>
  252. <span class="phpdocumentor-signature__type"><a href="classes/chillerlan-QRCode-Common-EccLevel.html"><abbr title="\chillerlan\QRCode\Common\EccLevel">EccLevel</abbr></a></span>
  253. <span class="phpdocumentor-signature__name">$eccLevel</span>
  254. </code>
  255. <section class="phpdocumentor-description"></section>
  256. <section class="phpdocumentor-description"></section>
  257. </article>
  258. <article
  259. class="
  260. phpdocumentor-element
  261. -property
  262. -private
  263. "
  264. >
  265. <h4 class="phpdocumentor-element__name" id="property_version">
  266. $version
  267. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#property_version" class="headerlink"><i class="fas fa-link"></i></a>
  268. <span class="phpdocumentor-element__modifiers">
  269. </span>
  270. </h4>
  271. <aside class="phpdocumentor-element-found-in">
  272. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  273. :
  274. <span class="phpdocumentor-element-found-in__line">37</span>
  275. </aside>
  276. <code class="phpdocumentor-code phpdocumentor-signature ">
  277. <span class="phpdocumentor-signature__visibility">private</span>
  278. <span class="phpdocumentor-signature__type"><a href="classes/chillerlan-QRCode-Common-Version.html"><abbr title="\chillerlan\QRCode\Common\Version">Version</abbr></a></span>
  279. <span class="phpdocumentor-signature__name">$version</span>
  280. </code>
  281. <section class="phpdocumentor-description"></section>
  282. <section class="phpdocumentor-description"></section>
  283. </article>
  284. </section>
  285. <section class="phpdocumentor-methods">
  286. <h3 class="phpdocumentor-elements__header" id="methods">
  287. Methods
  288. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#methods" class="headerlink"><i class="fas fa-link"></i></a>
  289. </h3>
  290. <article
  291. class="phpdocumentor-element
  292. -method
  293. -public
  294. "
  295. >
  296. <h4 class="phpdocumentor-element__name" id="method___construct">
  297. __construct()
  298. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method___construct" class="headerlink"><i class="fas fa-link"></i></a>
  299. </h4>
  300. <aside class="phpdocumentor-element-found-in">
  301. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  302. :
  303. <span class="phpdocumentor-element-found-in__line">43</span>
  304. </aside>
  305. <p class="phpdocumentor-summary">ReedSolomonDecoder constructor</p>
  306. <code class="phpdocumentor-code phpdocumentor-signature ">
  307. <span class="phpdocumentor-signature__visibility">public</span>
  308. <span class="phpdocumentor-signature__name">__construct</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-Version.html"><abbr title="\chillerlan\QRCode\Common\Version">Version</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$version</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-EccLevel.html"><abbr title="\chillerlan\QRCode\Common\EccLevel">EccLevel</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$eccLevel</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">mixed</span></code>
  309. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  310. <dl class="phpdocumentor-argument-list">
  311. <dt class="phpdocumentor-argument-list__entry">
  312. <span class="phpdocumentor-signature__argument__name">$version</span>
  313. : <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-Version.html"><abbr title="\chillerlan\QRCode\Common\Version">Version</abbr></a></span>
  314. </dt>
  315. <dd class="phpdocumentor-argument-list__definition">
  316. <section class="phpdocumentor-description"></section>
  317. </dd>
  318. <dt class="phpdocumentor-argument-list__entry">
  319. <span class="phpdocumentor-signature__argument__name">$eccLevel</span>
  320. : <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-EccLevel.html"><abbr title="\chillerlan\QRCode\Common\EccLevel">EccLevel</abbr></a></span>
  321. </dt>
  322. <dd class="phpdocumentor-argument-list__definition">
  323. <section class="phpdocumentor-description"></section>
  324. </dd>
  325. </dl>
  326. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  327. <span class="phpdocumentor-signature__response_type">mixed</span>
  328. &mdash;
  329. </article>
  330. <article
  331. class="phpdocumentor-element
  332. -method
  333. -public
  334. "
  335. >
  336. <h4 class="phpdocumentor-element__name" id="method_decode">
  337. decode()
  338. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_decode" class="headerlink"><i class="fas fa-link"></i></a>
  339. </h4>
  340. <aside class="phpdocumentor-element-found-in">
  341. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  342. :
  343. <span class="phpdocumentor-element-found-in__line">51</span>
  344. </aside>
  345. <p class="phpdocumentor-summary">Error-correct and copy data blocks together into a stream of bytes</p>
  346. <code class="phpdocumentor-code phpdocumentor-signature ">
  347. <span class="phpdocumentor-signature__visibility">public</span>
  348. <span class="phpdocumentor-signature__name">decode</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$rawCodewords</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Common-BitBuffer.html"><abbr title="\chillerlan\QRCode\Common\BitBuffer">BitBuffer</abbr></a></span></code>
  349. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  350. <dl class="phpdocumentor-argument-list">
  351. <dt class="phpdocumentor-argument-list__entry">
  352. <span class="phpdocumentor-signature__argument__name">$rawCodewords</span>
  353. : <span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;</span>
  354. </dt>
  355. <dd class="phpdocumentor-argument-list__definition">
  356. <section class="phpdocumentor-description"></section>
  357. </dd>
  358. </dl>
  359. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  360. <span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Common-BitBuffer.html"><abbr title="\chillerlan\QRCode\Common\BitBuffer">BitBuffer</abbr></a></span>
  361. &mdash;
  362. </article>
  363. <article
  364. class="phpdocumentor-element
  365. -method
  366. -private
  367. "
  368. >
  369. <h4 class="phpdocumentor-element__name" id="method_correctErrors">
  370. correctErrors()
  371. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_correctErrors" class="headerlink"><i class="fas fa-link"></i></a>
  372. </h4>
  373. <aside class="phpdocumentor-element-found-in">
  374. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  375. :
  376. <span class="phpdocumentor-element-found-in__line">141</span>
  377. </aside>
  378. <p class="phpdocumentor-summary">Given data and error-correction codewords received, possibly corrupted by errors, attempts to
  379. correct the errors in-place using Reed-Solomon error correction.</p>
  380. <code class="phpdocumentor-code phpdocumentor-signature ">
  381. <span class="phpdocumentor-signature__visibility">private</span>
  382. <span class="phpdocumentor-signature__name">correctErrors</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$codewordBytes</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$numDataCodewords</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span></code>
  383. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  384. <dl class="phpdocumentor-argument-list">
  385. <dt class="phpdocumentor-argument-list__entry">
  386. <span class="phpdocumentor-signature__argument__name">$codewordBytes</span>
  387. : <span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;</span>
  388. </dt>
  389. <dd class="phpdocumentor-argument-list__definition">
  390. <section class="phpdocumentor-description"></section>
  391. </dd>
  392. <dt class="phpdocumentor-argument-list__entry">
  393. <span class="phpdocumentor-signature__argument__name">$numDataCodewords</span>
  394. : <span class="phpdocumentor-signature__argument__return-type">int</span>
  395. </dt>
  396. <dd class="phpdocumentor-argument-list__definition">
  397. <section class="phpdocumentor-description"></section>
  398. </dd>
  399. </dl>
  400. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  401. <span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span>
  402. &mdash;
  403. </article>
  404. <article
  405. class="phpdocumentor-element
  406. -method
  407. -private
  408. "
  409. >
  410. <h4 class="phpdocumentor-element__name" id="method_decodeWords">
  411. decodeWords()
  412. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_decodeWords" class="headerlink"><i class="fas fa-link"></i></a>
  413. </h4>
  414. <aside class="phpdocumentor-element-found-in">
  415. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  416. :
  417. <span class="phpdocumentor-element-found-in__line">171</span>
  418. </aside>
  419. <p class="phpdocumentor-summary">Decodes given set of received codewords, which include both data and error-correction
  420. codewords. Really, this means it uses Reed-Solomon to detect and correct errors, in-place,
  421. in the input.</p>
  422. <code class="phpdocumentor-code phpdocumentor-signature ">
  423. <span class="phpdocumentor-signature__visibility">private</span>
  424. <span class="phpdocumentor-signature__name">decodeWords</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$received</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$numEccCodewords</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, int&gt;</span></code>
  425. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  426. <dl class="phpdocumentor-argument-list">
  427. <dt class="phpdocumentor-argument-list__entry">
  428. <span class="phpdocumentor-signature__argument__name">$received</span>
  429. : <span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;</span>
  430. </dt>
  431. <dd class="phpdocumentor-argument-list__definition">
  432. <section class="phpdocumentor-description"><p>data and error-correction codewords</p>
  433. </section>
  434. </dd>
  435. <dt class="phpdocumentor-argument-list__entry">
  436. <span class="phpdocumentor-signature__argument__name">$numEccCodewords</span>
  437. : <span class="phpdocumentor-signature__argument__return-type">int</span>
  438. </dt>
  439. <dd class="phpdocumentor-argument-list__definition">
  440. <section class="phpdocumentor-description"><p>number of error-correction codewords available</p>
  441. </section>
  442. </dd>
  443. </dl>
  444. <h5 class="phpdocumentor-tag-list__heading" id="tags">
  445. Tags
  446. <a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
  447. </h5>
  448. <dl class="phpdocumentor-tag-list">
  449. <dt class="phpdocumentor-tag-list__entry">
  450. <span class="phpdocumentor-tag__name">throws</span>
  451. </dt>
  452. <dd class="phpdocumentor-tag-list__definition">
  453. <span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-QRCodeException.html"><abbr title="\chillerlan\QRCode\QRCodeException">QRCodeException</abbr></a></span>
  454. <section class="phpdocumentor-description"><p>if decoding fails for any reason</p>
  455. </section>
  456. </dd>
  457. </dl>
  458. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  459. <span class="phpdocumentor-signature__response_type">array&lt;string|int, int&gt;</span>
  460. &mdash;
  461. </article>
  462. <article
  463. class="phpdocumentor-element
  464. -method
  465. -private
  466. "
  467. >
  468. <h4 class="phpdocumentor-element__name" id="method_deinterleaveRawBytes">
  469. deinterleaveRawBytes()
  470. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_deinterleaveRawBytes" class="headerlink"><i class="fas fa-link"></i></a>
  471. </h4>
  472. <aside class="phpdocumentor-element-found-in">
  473. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  474. :
  475. <span class="phpdocumentor-element-found-in__line">73</span>
  476. </aside>
  477. <p class="phpdocumentor-summary">When QR Codes use multiple data blocks, they are actually interleaved.</p>
  478. <code class="phpdocumentor-code phpdocumentor-signature ">
  479. <span class="phpdocumentor-signature__visibility">private</span>
  480. <span class="phpdocumentor-signature__name">deinterleaveRawBytes</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$rawCodewords</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span></code>
  481. <section class="phpdocumentor-description"><p>That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
  482. method will separate the data into original blocks.</p>
  483. </section>
  484. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  485. <dl class="phpdocumentor-argument-list">
  486. <dt class="phpdocumentor-argument-list__entry">
  487. <span class="phpdocumentor-signature__argument__name">$rawCodewords</span>
  488. : <span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;</span>
  489. </dt>
  490. <dd class="phpdocumentor-argument-list__definition">
  491. <section class="phpdocumentor-description"></section>
  492. </dd>
  493. </dl>
  494. <h5 class="phpdocumentor-tag-list__heading" id="tags">
  495. Tags
  496. <a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
  497. </h5>
  498. <dl class="phpdocumentor-tag-list">
  499. <dt class="phpdocumentor-tag-list__entry">
  500. <span class="phpdocumentor-tag__name">throws</span>
  501. </dt>
  502. <dd class="phpdocumentor-tag-list__definition">
  503. <span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-Decoder-QRCodeDecoderException.html"><abbr title="\chillerlan\QRCode\Decoder\QRCodeDecoderException">QRCodeDecoderException</abbr></a></span>
  504. </dd>
  505. </dl>
  506. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  507. <span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span>
  508. &mdash;
  509. </article>
  510. <article
  511. class="phpdocumentor-element
  512. -method
  513. -private
  514. "
  515. >
  516. <h4 class="phpdocumentor-element__name" id="method_findErrorLocations">
  517. findErrorLocations()
  518. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_findErrorLocations" class="headerlink"><i class="fas fa-link"></i></a>
  519. </h4>
  520. <aside class="phpdocumentor-element-found-in">
  521. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  522. :
  523. <span class="phpdocumentor-element-found-in__line">260</span>
  524. </aside>
  525. <code class="phpdocumentor-code phpdocumentor-signature ">
  526. <span class="phpdocumentor-signature__visibility">private</span>
  527. <span class="phpdocumentor-signature__name">findErrorLocations</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$errorLocator</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span></code>
  528. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  529. <dl class="phpdocumentor-argument-list">
  530. <dt class="phpdocumentor-argument-list__entry">
  531. <span class="phpdocumentor-signature__argument__name">$errorLocator</span>
  532. : <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a></span>
  533. </dt>
  534. <dd class="phpdocumentor-argument-list__definition">
  535. <section class="phpdocumentor-description"></section>
  536. </dd>
  537. </dl>
  538. <h5 class="phpdocumentor-tag-list__heading" id="tags">
  539. Tags
  540. <a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
  541. </h5>
  542. <dl class="phpdocumentor-tag-list">
  543. <dt class="phpdocumentor-tag-list__entry">
  544. <span class="phpdocumentor-tag__name">throws</span>
  545. </dt>
  546. <dd class="phpdocumentor-tag-list__definition">
  547. <span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-QRCodeException.html"><abbr title="\chillerlan\QRCode\QRCodeException">QRCodeException</abbr></a></span>
  548. </dd>
  549. </dl>
  550. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  551. <span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span>
  552. &mdash;
  553. </article>
  554. <article
  555. class="phpdocumentor-element
  556. -method
  557. -private
  558. "
  559. >
  560. <h4 class="phpdocumentor-element__name" id="method_findErrorMagnitudes">
  561. findErrorMagnitudes()
  562. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_findErrorMagnitudes" class="headerlink"><i class="fas fa-link"></i></a>
  563. </h4>
  564. <aside class="phpdocumentor-element-found-in">
  565. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  566. :
  567. <span class="phpdocumentor-element-found-in__line">288</span>
  568. </aside>
  569. <code class="phpdocumentor-code phpdocumentor-signature ">
  570. <span class="phpdocumentor-signature__visibility">private</span>
  571. <span class="phpdocumentor-signature__name">findErrorMagnitudes</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$errorEvaluator</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$errorLocations</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span></code>
  572. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  573. <dl class="phpdocumentor-argument-list">
  574. <dt class="phpdocumentor-argument-list__entry">
  575. <span class="phpdocumentor-signature__argument__name">$errorEvaluator</span>
  576. : <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a></span>
  577. </dt>
  578. <dd class="phpdocumentor-argument-list__definition">
  579. <section class="phpdocumentor-description"></section>
  580. </dd>
  581. <dt class="phpdocumentor-argument-list__entry">
  582. <span class="phpdocumentor-signature__argument__name">$errorLocations</span>
  583. : <span class="phpdocumentor-signature__argument__return-type">array&lt;string|int, mixed&gt;</span>
  584. </dt>
  585. <dd class="phpdocumentor-argument-list__definition">
  586. <section class="phpdocumentor-description"></section>
  587. </dd>
  588. </dl>
  589. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  590. <span class="phpdocumentor-signature__response_type">array&lt;string|int, mixed&gt;</span>
  591. &mdash;
  592. </article>
  593. <article
  594. class="phpdocumentor-element
  595. -method
  596. -private
  597. "
  598. >
  599. <h4 class="phpdocumentor-element__name" id="method_runEuclideanAlgorithm">
  600. runEuclideanAlgorithm()
  601. <a href="classes/chillerlan-QRCode-Common-ReedSolomonDecoder.html#method_runEuclideanAlgorithm" class="headerlink"><i class="fas fa-link"></i></a>
  602. </h4>
  603. <aside class="phpdocumentor-element-found-in">
  604. <abbr class="phpdocumentor-element-found-in__file" title="src/Common/ReedSolomonDecoder.php"><a href="files/src-common-reedsolomondecoder.html"><abbr title="src/Common/ReedSolomonDecoder.php">ReedSolomonDecoder.php</abbr></a></abbr>
  605. :
  606. <span class="phpdocumentor-element-found-in__line">216</span>
  607. </aside>
  608. <code class="phpdocumentor-code phpdocumentor-signature ">
  609. <span class="phpdocumentor-signature__visibility">private</span>
  610. <span class="phpdocumentor-signature__name">runEuclideanAlgorithm</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$a</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$b</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$z</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&gt;</span></code>
  611. <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
  612. <dl class="phpdocumentor-argument-list">
  613. <dt class="phpdocumentor-argument-list__entry">
  614. <span class="phpdocumentor-signature__argument__name">$a</span>
  615. : <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a></span>
  616. </dt>
  617. <dd class="phpdocumentor-argument-list__definition">
  618. <section class="phpdocumentor-description"></section>
  619. </dd>
  620. <dt class="phpdocumentor-argument-list__entry">
  621. <span class="phpdocumentor-signature__argument__name">$b</span>
  622. : <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a></span>
  623. </dt>
  624. <dd class="phpdocumentor-argument-list__definition">
  625. <section class="phpdocumentor-description"></section>
  626. </dd>
  627. <dt class="phpdocumentor-argument-list__entry">
  628. <span class="phpdocumentor-signature__argument__name">$z</span>
  629. : <span class="phpdocumentor-signature__argument__return-type">int</span>
  630. </dt>
  631. <dd class="phpdocumentor-argument-list__definition">
  632. <section class="phpdocumentor-description"></section>
  633. </dd>
  634. </dl>
  635. <h5 class="phpdocumentor-tag-list__heading" id="tags">
  636. Tags
  637. <a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
  638. </h5>
  639. <dl class="phpdocumentor-tag-list">
  640. <dt class="phpdocumentor-tag-list__entry">
  641. <span class="phpdocumentor-tag__name">throws</span>
  642. </dt>
  643. <dd class="phpdocumentor-tag-list__definition">
  644. <span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-QRCodeException.html"><abbr title="\chillerlan\QRCode\QRCodeException">QRCodeException</abbr></a></span>
  645. </dd>
  646. </dl>
  647. <h5 class="phpdocumentor-return-value__heading">Return values</h5>
  648. <span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Common-GenericGFPoly.html"><abbr title="\chillerlan\QRCode\Common\GenericGFPoly">GenericGFPoly</abbr></a>&gt;</span>
  649. &mdash;
  650. <section class="phpdocumentor-description"><p>[sigma, omega]</p>
  651. </section>
  652. </article>
  653. </section>
  654. <script type="text/javascript">
  655. function loadExternalCodeSnippets(line) {
  656. Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach((pre) => {
  657. var src = pre.getAttribute('data-src').replace( /\\/g, '/');
  658. var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
  659. var language = 'php';
  660. var code = document.createElement('code');
  661. code.className = 'language-' + language;
  662. pre.textContent = '';
  663. pre.setAttribute('data-line', line)
  664. code.textContent = 'Loading…';
  665. pre.appendChild(code);
  666. var xhr = new XMLHttpRequest();
  667. xhr.open('GET', src, true);
  668. xhr.onreadystatechange = function () {
  669. if (xhr.readyState == 4) {
  670. if (xhr.status < 400 && xhr.responseText) {
  671. code.textContent = xhr.responseText;
  672. Prism.highlightElement(code);
  673. }
  674. else if (xhr.status >= 400) {
  675. code.textContent = '✖ Error ' + xhr.status + ' while fetching file: ' + xhr.statusText;
  676. }
  677. else {
  678. code.textContent = '✖ Error: File does not exist, is empty or trying to view from localhost';
  679. }
  680. }
  681. };
  682. xhr.send(null);
  683. });
  684. }
  685. var modals = document.querySelectorAll("[data-modal]");
  686. modals.forEach(function (trigger) {
  687. trigger.addEventListener("click", function (event) {
  688. //event.preventDefault();
  689. const modal = document.getElementById(trigger.dataset.modal);
  690. modal.classList.add("phpdocumentor-modal__open");
  691. loadExternalCodeSnippets(trigger.dataset.line)
  692. const exits = modal.querySelectorAll("[data-exit-button]");
  693. exits.forEach(function (exit) {
  694. exit.addEventListener("click", function (event) {
  695. event.preventDefault();
  696. modal.classList.remove("phpdocumentor-modal__open");
  697. });
  698. });
  699. });
  700. });
  701. </script>
  702. </article>
  703. <section data-search-results class="phpdocumentor-search-results phpdocumentor-search-results--hidden">
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