chillerlan-QRCode-Decoder-ReedSolomonDecoder.html 54 KB

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