Decoder::decodeBitStream() - Code Metrics - Inspection of ":bath: fix/cleanup/move mask pattern evaluation, d..." - chillerlan/php-qrcode - Measure and Improve Code Quality continuously with Scrutinizer

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Push — main ( 48b6c2...5c2c92 )

by smiley

created 2021-12-01 15:52 UTC

Decoder::decodeBitStream() C

↳ Parent: Decoder

Complexity

Conditions	14
Paths	4

Size

Total Lines	113
Code Lines	44

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	14
eloc	44
nc	4
nop	3
dl	0
loc	113
rs	6.2666
c	2
b	0
f	0

How to fix Long Method Complexity

<?php
/**
 * Class Decoder
 *
 * @created      17.01.2021
 * @author       ZXing Authors
 * @author       Smiley <[email protected]>
 * @copyright    2021 Smiley
 * @license      Apache-2.0
 */

namespace chillerlan\QRCode\Decoder;

use InvalidArgumentException, RuntimeException, Throwable;
use chillerlan\QRCode\Common\{BitBuffer, EccLevel, Mode, ReedSolomonDecoder, Version};
use chillerlan\QRCode\Data\{AlphaNum, Byte, ECI, Kanji, Number};
use chillerlan\QRCode\Detector\Detector;
use function count, array_fill, mb_convert_encoding, mb_detect_encoding;

/**
 * <p>The main class which implements QR Code decoding -- as opposed to locating and extracting
 * the QR Code from an image.</p>
 *
 * @author Sean Owen
 */
final class Decoder{

#	private const GB2312_SUBSET = 1;

	/**
	 * <p>Decodes a QR Code represented as a {@link \chillerlan\QRCode\Decoder\BitMatrix}.
	 * A 1 or "true" is taken to mean a black module.</p>
	 *
	 * @param \chillerlan\QRCode\Decoder\LuminanceSourceInterface $source
	 *
	 * @return \chillerlan\QRCode\Decoder\DecoderResult text and bytes encoded within the QR Code
	 * @throws \Throwable if the QR Code cannot be decoded
	 */
	public function decode(LuminanceSourceInterface $source):DecoderResult{
		$bitMatrix = (new Detector($source))->detect();

		try{
			// clone the BitMatrix to avoid errors in case we run into mirroring
			return $this->decodeMatrix(clone $bitMatrix);
		}
		catch(Throwable $e){

			try{
				/*
				 * Prepare for a mirrored reading.
				 *
				 * Since we're here, this means we have successfully detected some kind
				 * of version and format information when mirrored. This is a good sign,
				 * that the QR code may be mirrored, and we should try once more with a
				 * mirrored content.
				 */
				return $this->decodeMatrix($bitMatrix->setMirror(true)->mirror());
			}
			catch(Throwable $f){
				// Throw the exception from the original reading
				throw $e;
			}

		}

	}

	/**
	 * @param \chillerlan\QRCode\Decoder\BitMatrix $bitMatrix
	 *
	 * @return \chillerlan\QRCode\Decoder\DecoderResult
	 */
	private function decodeMatrix(BitMatrix $bitMatrix):DecoderResult{
		// Read raw codewords
		$rawCodewords = $bitMatrix->readCodewords();
		$version      = $bitMatrix->getVersion();
		$formatInfo   = $bitMatrix->getFormatInfo();

		// technically this shouldn't happen as the respective read meathods would throw first
		if($version === null || $formatInfo === null){
			throw new RuntimeException('unable to read version or ecc level');
		}

		$eccLevel = $formatInfo->getErrorCorrectionLevel();

		// Separate into data blocks
		$dataBlocks = $this->getDataBlocks($rawCodewords, $version, $eccLevel);

		$resultBytes  = [];
		$resultOffset = 0;

		// Error-correct and copy data blocks together into a stream of bytes
		foreach($dataBlocks as $dataBlock){
			[$numDataCodewords, $codewordBytes] = $dataBlock;

			$corrected = $this->correctErrors($codewordBytes, $numDataCodewords);

			for($i = 0; $i < $numDataCodewords; $i++){
				$resultBytes[$resultOffset++] = $corrected[$i];
			}
		}

		// Decode the contents of that stream of bytes
		return $this->decodeBitStream($resultBytes, $version, $eccLevel);
	}

	/**
	 * <p>When QR Codes use multiple data blocks, they are actually interleaved.
	 * That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
	 * method will separate the data into original blocks.</p>
	 *
	 * @param array                              $rawCodewords bytes as read directly from the QR Code
	 * @param \chillerlan\QRCode\Common\Version  $version      version of the QR Code
	 * @param \chillerlan\QRCode\Common\EccLevel $eccLevel     error-correction level of the QR Code
	 *
	 * @return array DataBlocks containing original bytes, "de-interleaved" from representation in the QR Code
	 * @throws \InvalidArgumentException
	 */
	private function getDataBlocks(array $rawCodewords, Version $version, EccLevel $eccLevel):array{

		if(count($rawCodewords) !== $version->getTotalCodewords()){
			throw new InvalidArgumentException('$rawCodewords differ from total codewords for version');
		}

		// Figure out the number and size of data blocks used by this version and
		// error correction level
		[$numEccCodewords, $eccBlocks] = $version->getRSBlocks($eccLevel);

		// Now establish DataBlocks of the appropriate size and number of data codewords
		$result          = [];//new DataBlock[$totalBlocks];
		$numResultBlocks = 0;

		foreach($eccBlocks as $blockData){
			[$numEccBlocks, $eccPerBlock] = $blockData;

			for($i = 0; $i < $numEccBlocks; $i++, $numResultBlocks++){
				$result[$numResultBlocks] = [$eccPerBlock, array_fill(0, $numEccCodewords + $eccPerBlock, 0)];
			}
		}

		// All blocks have the same amount of data, except that the last n
		// (where n may be 0) have 1 more byte. Figure out where these start.
		/** @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset */
		$shorterBlocksTotalCodewords = count($result[0][1]);
		$longerBlocksStartAt         = count($result) - 1;

		while($longerBlocksStartAt >= 0){
			$numCodewords = count($result[$longerBlocksStartAt][1]);

			if($numCodewords == $shorterBlocksTotalCodewords){
				break;
			}

			$longerBlocksStartAt--;
		}

		$longerBlocksStartAt++;

		$shorterBlocksNumDataCodewords = $shorterBlocksTotalCodewords - $numEccCodewords;
		// The last elements of result may be 1 element longer;
		// first fill out as many elements as all of them have
		$rawCodewordsOffset = 0;

		for($i = 0; $i < $shorterBlocksNumDataCodewords; $i++){
			for($j = 0; $j < $numResultBlocks; $j++){
				$result[$j][1][$i] = $rawCodewords[$rawCodewordsOffset++];
			}
		}

		// Fill out the last data block in the longer ones
		for($j = $longerBlocksStartAt; $j < $numResultBlocks; $j++){
			$result[$j][1][$shorterBlocksNumDataCodewords] = $rawCodewords[$rawCodewordsOffset++];
		}

		// Now add in error correction blocks
		/** @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset */
		$max = count($result[0][1]);

		for($i = $shorterBlocksNumDataCodewords; $i < $max; $i++){
			for($j = 0; $j < $numResultBlocks; $j++){
				$iOffset                 = $j < $longerBlocksStartAt ? $i : $i + 1;
				$result[$j][1][$iOffset] = $rawCodewords[$rawCodewordsOffset++];
			}
		}

		return $result;
	}

	/**
	 * <p>Given data and error-correction codewords received, possibly corrupted by errors, attempts to
	 * correct the errors in-place using Reed-Solomon error correction.</p>
	 */
	private function correctErrors(array $codewordBytes, int $numDataCodewords):array{
		// First read into an array of ints
		$codewordsInts = [];

		foreach($codewordBytes as $i => $codewordByte){
			$codewordsInts[$i] = $codewordByte & 0xFF;
		}

		$decoded = (new ReedSolomonDecoder)->decode($codewordsInts, (count($codewordBytes) - $numDataCodewords));

		// Copy back into array of bytes -- only need to worry about the bytes that were data
		// We don't care about errors in the error-correction codewords
		for($i = 0; $i < $numDataCodewords; $i++){
			$codewordBytes[$i] = $decoded[$i];
		}

		return $codewordBytes;
	}

	/**
	 * @throws \RuntimeException
	 */
	private function decodeBitStream(array $bytes, Version $version, EccLevel $ecLevel):DecoderResult{
		$bits           = new BitBuffer($bytes);
		$symbolSequence = -1;
		$parityData     = -1;
		$versionNumber  = $version->getVersionNumber();

		$result      = '';
		$eciCharset  = null;
#		$fc1InEffect = false;

		// While still another segment to read...
		while($bits->available() >= 4){
			$datamode = $bits->read(4); // mode is encoded by 4 bits

			// OK, assume we're done. Really, a TERMINATOR mode should have been recorded here
			if($datamode === Mode::TERMINATOR){
				break;
			}

			if($datamode === Mode::ECI){
				// Count doesn't apply to ECI
				$eciCharset = ECI::parseValue($bits);
			}
			/** @noinspection PhpStatementHasEmptyBodyInspection */
			elseif($datamode === Mode::FNC1_FIRST || $datamode === Mode::FNC1_SECOND){
				// We do little with FNC1 except alter the parsed result a bit according to the spec
#				$fc1InEffect = true;
			}
			elseif($datamode === Mode::STRCTURED_APPEND){
				if($bits->available() < 16){
					throw new RuntimeException('structured append: not enough bits left');
				}
				// sequence number and parity is added later to the result metadata
				// Read next 8 bits (symbol sequence #) and 8 bits (parity data), then continue
				$symbolSequence = $bits->read(8);
				$parityData     = $bits->read(8);
			}
			else{
				// First handle Hanzi mode which does not start with character count
/*				if($datamode === Mode::DATA_HANZI){
					//chinese mode contains a sub set indicator right after mode indicator
					$subset = $bits->read(4);
					$length = $bits->read(Mode::getLengthBitsForVersion($datamode, $versionNumber));
					if($subset === self::GB2312_SUBSET){
						$result .= $this->decodeHanziSegment($bits, $length);
					}
				}*/
#				else{
					// "Normal" QR code modes:
					if($datamode === Mode::NUMBER){
						$result .= Number::decodeSegment($bits, $versionNumber);
					}
					elseif($datamode === Mode::ALPHANUM){
						$str = AlphaNum::decodeSegment($bits, $versionNumber);

						// See section 6.4.8.1, 6.4.8.2
/*						if($fc1InEffect){
							$start = \strlen($str);
							// We need to massage the result a bit if in an FNC1 mode:
							for($i = $start; $i < $start; $i++){
								if($str[$i] === '%'){
									if($i < $start - 1 && $str[$i + 1] === '%'){
										// %% is rendered as %
										$str = \substr_replace($str, '', $i + 1, 1);//deleteCharAt(i + 1);
									}
#									else{
										// In alpha mode, % should be converted to FNC1 separator 0x1D @todo
#										$str = setCharAt($i, \chr(0x1D)); // ???
#									}
								}
							}
						}
*/
						$result .= $str;
					}
					elseif($datamode === Mode::BYTE){
						$str = Byte::decodeSegment($bits, $versionNumber);

						if($eciCharset !== null){
							$encoding = $eciCharset->getName();

							if($encoding === null){
								// The spec isn't clear on this mode; see
								// section 6.4.5: t does not say which encoding to assuming
								// upon decoding. I have seen ISO-8859-1 used as well as
								// Shift_JIS -- without anything like an ECI designator to
								// give a hint.
								$encoding = mb_detect_encoding($str, ['ISO-8859-1', 'SJIS', 'UTF-8']);
							}

							$eciCharset = null;
							$str = mb_convert_encoding($str, $encoding);
						}

						$result .= $str;
					}
					elseif($datamode === Mode::KANJI){
						$result .= Kanji::decodeSegment($bits, $versionNumber);
					}
					else{
						throw new RuntimeException('invalid data mode');
					}
#				}
			}
		}

		return new DecoderResult([
			'rawBytes'                 => $bytes,
			'text'                     => $result,
			'version'                  => $version,
			'eccLevel'                 => $ecLevel,
			'structuredAppendParity'   => $parityData,
			'structuredAppendSequence' => $symbolSequence
		]);
	}

}


1			<?php
2			/**
3			* Class Decoder
4			*
5			* @created 17.01.2021
6			* @author ZXing Authors
7			* @author Smiley <[email protected]>
8			* @copyright 2021 Smiley
9			* @license Apache-2.0
10			*/
11
12			namespace chillerlan\QRCode\Decoder;
13
14			use InvalidArgumentException, RuntimeException, Throwable;
15			use chillerlan\QRCode\Common\{BitBuffer, EccLevel, Mode, ReedSolomonDecoder, Version};
16			use chillerlan\QRCode\Data\{AlphaNum, Byte, ECI, Kanji, Number};
17			use chillerlan\QRCode\Detector\Detector;
18			use function count, array_fill, mb_convert_encoding, mb_detect_encoding;
19
20			/**
21			* <p>The main class which implements QR Code decoding -- as opposed to locating and extracting
22			* the QR Code from an image.</p>
23			*
24			* @author Sean Owen
25			*/
26			final class Decoder{
27
28			# private const GB2312_SUBSET = 1;
29
30			/**
31			* <p>Decodes a QR Code represented as a {@link \chillerlan\QRCode\Decoder\BitMatrix}.
32			* A 1 or "true" is taken to mean a black module.</p>
33			*
34			* @param \chillerlan\QRCode\Decoder\LuminanceSourceInterface $source
35			*
36			* @return \chillerlan\QRCode\Decoder\DecoderResult text and bytes encoded within the QR Code
37			* @throws \Throwable if the QR Code cannot be decoded
38			*/
39			public function decode(LuminanceSourceInterface $source):DecoderResult{
40			$bitMatrix = (new Detector($source))->detect();
41
42			try{
43			// clone the BitMatrix to avoid errors in case we run into mirroring
44			return $this->decodeMatrix(clone $bitMatrix);
45			}
46			catch(Throwable $e){
47
48			try{
49			/*
50			* Prepare for a mirrored reading.
51			*
52			* Since we're here, this means we have successfully detected some kind
53			* of version and format information when mirrored. This is a good sign,
54			* that the QR code may be mirrored, and we should try once more with a
55			* mirrored content.
56			*/
57			return $this->decodeMatrix($bitMatrix->setMirror(true)->mirror());
58			}
59			catch(Throwable $f){
60			// Throw the exception from the original reading
61			throw $e;
62			}
63
64			}
65
66			}
67
68			/**
69			* @param \chillerlan\QRCode\Decoder\BitMatrix $bitMatrix
70			*
71			* @return \chillerlan\QRCode\Decoder\DecoderResult
72			*/
73			private function decodeMatrix(BitMatrix $bitMatrix):DecoderResult{
74			// Read raw codewords
75			$rawCodewords = $bitMatrix->readCodewords();
76			$version = $bitMatrix->getVersion();
77			$formatInfo = $bitMatrix->getFormatInfo();
78
79			// technically this shouldn't happen as the respective read meathods would throw first
80			if($version === null \|\| $formatInfo === null){
81			throw new RuntimeException('unable to read version or ecc level');
82			}
83
84			$eccLevel = $formatInfo->getErrorCorrectionLevel();
85
86			// Separate into data blocks
87			$dataBlocks = $this->getDataBlocks($rawCodewords, $version, $eccLevel);
88
89			$resultBytes = [];
90			$resultOffset = 0;
91
92			// Error-correct and copy data blocks together into a stream of bytes
93			foreach($dataBlocks as $dataBlock){
94			[$numDataCodewords, $codewordBytes] = $dataBlock;
95
96			$corrected = $this->correctErrors($codewordBytes, $numDataCodewords);
97
98			for($i = 0; $i < $numDataCodewords; $i++){
99			$resultBytes[$resultOffset++] = $corrected[$i];
100			}
101			}
102
103			// Decode the contents of that stream of bytes
104			return $this->decodeBitStream($resultBytes, $version, $eccLevel);
105			}
106
107			/**
108			* <p>When QR Codes use multiple data blocks, they are actually interleaved.
109			* That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
110			* method will separate the data into original blocks.</p>
111			*
112			* @param array $rawCodewords bytes as read directly from the QR Code
113			* @param \chillerlan\QRCode\Common\Version $version version of the QR Code
114			* @param \chillerlan\QRCode\Common\EccLevel $eccLevel error-correction level of the QR Code
115			*
116			* @return array DataBlocks containing original bytes, "de-interleaved" from representation in the QR Code
117			* @throws \InvalidArgumentException
118			*/
119			private function getDataBlocks(array $rawCodewords, Version $version, EccLevel $eccLevel):array{
120
121			if(count($rawCodewords) !== $version->getTotalCodewords()){
122			throw new InvalidArgumentException('$rawCodewords differ from total codewords for version');
123			}
124
125			// Figure out the number and size of data blocks used by this version and
126			// error correction level
127			[$numEccCodewords, $eccBlocks] = $version->getRSBlocks($eccLevel);
128
129			// Now establish DataBlocks of the appropriate size and number of data codewords
130			$result = [];//new DataBlock[$totalBlocks];
131			$numResultBlocks = 0;
132
133			foreach($eccBlocks as $blockData){
134			[$numEccBlocks, $eccPerBlock] = $blockData;
135
136			for($i = 0; $i < $numEccBlocks; $i++, $numResultBlocks++){
137			$result[$numResultBlocks] = [$eccPerBlock, array_fill(0, $numEccCodewords + $eccPerBlock, 0)];
138			}
139			}
140
141			// All blocks have the same amount of data, except that the last n
142			// (where n may be 0) have 1 more byte. Figure out where these start.
143			/** @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset */
144			$shorterBlocksTotalCodewords = count($result[0][1]);
145			$longerBlocksStartAt = count($result) - 1;
146
147			while($longerBlocksStartAt >= 0){
148			$numCodewords = count($result[$longerBlocksStartAt][1]);
149
150			if($numCodewords == $shorterBlocksTotalCodewords){
151			break;
152			}
153
154			$longerBlocksStartAt--;
155			}
156
157			$longerBlocksStartAt++;
158
159			$shorterBlocksNumDataCodewords = $shorterBlocksTotalCodewords - $numEccCodewords;
160			// The last elements of result may be 1 element longer;
161			// first fill out as many elements as all of them have
162			$rawCodewordsOffset = 0;
163
164			for($i = 0; $i < $shorterBlocksNumDataCodewords; $i++){
165			for($j = 0; $j < $numResultBlocks; $j++){
166			$result[$j][1][$i] = $rawCodewords[$rawCodewordsOffset++];
167			}
168			}
169
170			// Fill out the last data block in the longer ones
171			for($j = $longerBlocksStartAt; $j < $numResultBlocks; $j++){
172			$result[$j][1][$shorterBlocksNumDataCodewords] = $rawCodewords[$rawCodewordsOffset++];
173			}
174
175			// Now add in error correction blocks
176			/** @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset */
177			$max = count($result[0][1]);
178
179			for($i = $shorterBlocksNumDataCodewords; $i < $max; $i++){
180			for($j = 0; $j < $numResultBlocks; $j++){
181			$iOffset = $j < $longerBlocksStartAt ? $i : $i + 1;
182			$result[$j][1][$iOffset] = $rawCodewords[$rawCodewordsOffset++];
183			}
184			}
185
186			return $result;
187			}
188
189			/**
190			* <p>Given data and error-correction codewords received, possibly corrupted by errors, attempts to
191			* correct the errors in-place using Reed-Solomon error correction.</p>
192			*/
193			private function correctErrors(array $codewordBytes, int $numDataCodewords):array{
194			// First read into an array of ints
195			$codewordsInts = [];
196
197			foreach($codewordBytes as $i => $codewordByte){
198			$codewordsInts[$i] = $codewordByte & 0xFF;
199			}
200
201			$decoded = (new ReedSolomonDecoder)->decode($codewordsInts, (count($codewordBytes) - $numDataCodewords));
202
203			// Copy back into array of bytes -- only need to worry about the bytes that were data
204			// We don't care about errors in the error-correction codewords
205			for($i = 0; $i < $numDataCodewords; $i++){
206			$codewordBytes[$i] = $decoded[$i];
207			}
208
209			return $codewordBytes;
210			}
211
212			/**
213			* @throws \RuntimeException
214			*/
215			private function decodeBitStream(array $bytes, Version $version, EccLevel $ecLevel):DecoderResult{
216			$bits = new BitBuffer($bytes);
217			$symbolSequence = -1;
218			$parityData = -1;
219			$versionNumber = $version->getVersionNumber();
220
221			$result = '';
222			$eciCharset = null;
223			# $fc1InEffect = false;
224
225			// While still another segment to read...
226			while($bits->available() >= 4){
227			$datamode = $bits->read(4); // mode is encoded by 4 bits
228
229			// OK, assume we're done. Really, a TERMINATOR mode should have been recorded here
230			if($datamode === Mode::TERMINATOR){
231			break;
232			}
233
234			if($datamode === Mode::ECI){
235			// Count doesn't apply to ECI
236			$eciCharset = ECI::parseValue($bits);
237			}
238			/** @noinspection PhpStatementHasEmptyBodyInspection */
239			elseif($datamode === Mode::FNC1_FIRST \|\| $datamode === Mode::FNC1_SECOND){
240			// We do little with FNC1 except alter the parsed result a bit according to the spec
241			# $fc1InEffect = true;
242			}
243			elseif($datamode === Mode::STRCTURED_APPEND){
244			if($bits->available() < 16){
245			throw new RuntimeException('structured append: not enough bits left');
246			}
247			// sequence number and parity is added later to the result metadata
248			// Read next 8 bits (symbol sequence #) and 8 bits (parity data), then continue
249			$symbolSequence = $bits->read(8);
250			$parityData = $bits->read(8);
251			}
252			else{
253			// First handle Hanzi mode which does not start with character count
254			/* if($datamode === Mode::DATA_HANZI){
255			//chinese mode contains a sub set indicator right after mode indicator
256			$subset = $bits->read(4);
257			$length = $bits->read(Mode::getLengthBitsForVersion($datamode, $versionNumber));
258			if($subset === self::GB2312_SUBSET){
259			$result .= $this->decodeHanziSegment($bits, $length);
260			}
261			}*/
262			# else{
263			// "Normal" QR code modes:
264			if($datamode === Mode::NUMBER){
265			$result .= Number::decodeSegment($bits, $versionNumber);
266			}
267			elseif($datamode === Mode::ALPHANUM){
268			$str = AlphaNum::decodeSegment($bits, $versionNumber);
269
270			// See section 6.4.8.1, 6.4.8.2
271			/* if($fc1InEffect){
272			$start = \strlen($str);
273			// We need to massage the result a bit if in an FNC1 mode:
274			for($i = $start; $i < $start; $i++){
275			if($str[$i] === '%'){
276			if($i < $start - 1 && $str[$i + 1] === '%'){
277			// %% is rendered as %
278			$str = \substr_replace($str, '', $i + 1, 1);//deleteCharAt(i + 1);
279			}
280			# else{
281			// In alpha mode, % should be converted to FNC1 separator 0x1D @todo
282			# $str = setCharAt($i, \chr(0x1D)); // ???
283			# }
284			}
285			}
286			}
287			*/
288			$result .= $str;
289			}
290			elseif($datamode === Mode::BYTE){
291			$str = Byte::decodeSegment($bits, $versionNumber);
292
293			if($eciCharset !== null){
294			$encoding = $eciCharset->getName();
295
296			if($encoding === null){
297			// The spec isn't clear on this mode; see
298			// section 6.4.5: t does not say which encoding to assuming
299			// upon decoding. I have seen ISO-8859-1 used as well as
300			// Shift_JIS -- without anything like an ECI designator to
301			// give a hint.
302			$encoding = mb_detect_encoding($str, ['ISO-8859-1', 'SJIS', 'UTF-8']);
303			}
304
305			$eciCharset = null;
306			$str = mb_convert_encoding($str, $encoding);
307			}
308
309			$result .= $str;
310			}
311			elseif($datamode === Mode::KANJI){
312			$result .= Kanji::decodeSegment($bits, $versionNumber);
313			}
314			else{
315			throw new RuntimeException('invalid data mode');
316			}
317			# }
318			}
319			}
320
321			return new DecoderResult([
322			'rawBytes' => $bytes,
323			'text' => $result,
324			'version' => $version,
325			'eccLevel' => $ecLevel,
326			'structuredAppendParity' => $parityData,
327			'structuredAppendSequence' => $symbolSequence
328			]);
329			}
330
331			}
332

chillerlan / php-qrcode

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Decoder::decodeBitStream() C

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