ID3v22::PIC() - Code Metrics - chillerlan/php-id3tag - Measure and Improve Code Quality continuously with Scrutinizer

ID3v22::PIC() A
last analyzed 2021-05-10 10:21 UTC

↳ Parent: ID3v22

Complexity

Conditions	3
Paths	4

Size

Total Lines	25
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	17
c	1
b	0
f	0
nc	4
nop	1
dl	0
loc	25
rs	9.7

<?php
/**
 * Class ID3v22
 *
 * @created      22.09.2018
 * @author       smiley <[email protected]>
 * @copyright    2018 smiley
 * @license      MIT
 *
 * @noinspection PhpUnusedParameterInspection
 */

namespace chillerlan\ID3Tag;

use function bin2hex, ord, sha1, strlen, strpos, strtolower, substr, trim, unpack;

/**
 * @link http://id3.org/id3v2-00
 */
class ID3v22 extends ID3v2Abstract{

	/**
	 * 4. Declared ID3v2 frames
	 */
	protected array $declaredFrames = [
		'BUF' => 'Recommended buffer size',
		'CNT' => 'Play counter',
		'COM' => 'Comments',
		'CRA' => 'Audio encryption',
		'CRM' => 'Encrypted meta frame',
		'ETC' => 'Event timing codes',
		'EQU' => 'Equalization',
		'GEO' => 'General encapsulated object',
		'IPL' => 'Involved people list',
		'LNK' => 'Linked information',
		'MCI' => 'Music CD Identifier',
		'MLL' => 'MPEG location lookup table',
		'PIC' => 'Attached picture',
		'POP' => 'Popularimeter',
		'REV' => 'Reverb',
		'RVA' => 'Relative volume adjustment',
		'SLT' => 'Synchronized lyric/text',
		'STC' => 'Synced tempo codes',
		'TAL' => 'Album/Movie/Show title',
		'TBP' => 'BPM (Beats Per Minute)',
		'TCM' => 'Composer',
		'TCO' => 'Content type',
		'TCR' => 'Copyright message',
		'TDA' => 'Date',
		'TDY' => 'Playlist delay',
		'TEN' => 'Encoded by',
		'TFT' => 'File type',
		'TIM' => 'Time',
		'TKE' => 'Initial key',
		'TLA' => 'Language(s)',
		'TLE' => 'Length',
		'TMT' => 'Media type',
		'TOA' => 'Original artist(s)/performer(s)',
		'TOF' => 'Original filename',
		'TOL' => 'Original Lyricist(s)/text writer(s)',
		'TOR' => 'Original release year',
		'TOT' => 'Original album/Movie/Show title',
		'TP1' => 'Lead artist(s)/Lead performer(s)/Soloist(s)/Performing group',
		'TP2' => 'Band/Orchestra/Accompaniment',
		'TP3' => 'Conductor/Performer refinement',
		'TP4' => 'Interpreted, remixed, or otherwise modified by',
		'TPA' => 'Part of a set',
		'TPB' => 'Publisher',
		'TRC' => 'ISRC (International Standard Recording Code)',
		'TRD' => 'Recording dates',
		'TRK' => 'Track number/Position in set',
		'TSI' => 'Size',
		'TSS' => 'Software/hardware and settings used for encoding',
		'TT1' => 'Content group description',
		'TT2' => 'Title/Songname/Content description',
		'TT3' => 'Subtitle/Description refinement',
		'TXT' => 'Lyricist/text writer',
		'TXX' => 'User defined text information frame',
		'TYE' => 'Year',
		'UFI' => 'Unique file identifier',
		'ULT' => 'Unsychronized lyric/text transcription',
		'WAF' => 'Official audio file webpage',
		'WAR' => 'Official artist/performer webpage',
		'WAS' => 'Official audio source webpage',
		'WCM' => 'Commercial information',
		'WCP' => 'Copyright/Legal information',
		'WPB' => 'Publishers official webpage',
		'WXX' => 'User defined URL link frame',

		'ITU' => 'iTunes?',
		'PCS' => 'Podcast?',
		'TDR' => 'Release date',
		'TDS' => '?',
		'TID' => '?',
		'WFD' => '?',
		'CM1' => '?',
	];


	/**
	 * 3.2. ID3v2.2 frames overview (excerpt)
	 *
	 * @inheritDoc
	 */
	public function parse(string $rawdata):array{
		$this->parsedFrames = [];
		$index              = 0;
		$rawlength          = strlen($rawdata);

		while($index < $rawlength){

			// frame name
			$name   = substr($rawdata, $index, 3);
			$index += 3;

			// name is end tag or garbage
			if($name === "\x00\x00\x00" || strlen($name) !== 3){
				break;
			}

			// frame length bytes
			$length = substr($rawdata, $index, 3);

			// length data is garbage
			if(strlen($length) !== 3){
				break;
			}

			$length = unpack('N', "\x00".$length)[1] ?? 0;
			$index += 3;

			// frame length exceeds tag size
			if($length > $rawlength || $index >= $rawlength){
				break;
			}

			// frame is empty
			if($length < 1){
				continue;
			}

			// frame data
			$data = substr($rawdata, $index, $length);
			$index += $length;

			// frame is empty
			if(strlen($data) < 1){
				continue;
			}

			$this->setTermpos($data);

			$parsedFrame = $this->parseFrame([
				'name'   => $name,
				'data'   => $data,
				'length' => $length,
			]);

			$this->addFrame($name, $parsedFrame);
		}

		return $this->parsedFrames;
	}

	/**
	 * 4.2. Text information frames
	 *
	 * Text information identifier  "T00" - "TZZ" , excluding "TXX",
	 * described in 4.2.2.
	 * Frame size                   $xx xx xx
	 * Text encoding                $xx
	 * Information                  <textstring>
	 */
	protected function T(array $frame):array{
		$content = $this->decodeString(substr($frame['data'], 1));

		// lists with a slash-delimiter
#		if(in_array($frame['name'], ['TP1', 'TCM', 'TXT', 'TOA', 'TOL'], true)){
#			$content = explode('/', $content);
#		}

		return ['content' => $content];
	}

	/**
	 * 4.2.2. User defined text information frame
	 *
	 * User defined...   "TXX"
	 * Frame size        $xx xx xx
	 * Text encoding     $xx
	 * Description       <textstring> $00 (00)
	 * Value             <textstring>
	 */
	protected function TXX(array $frame):array{
		$content = $this->decodeString(substr($frame['data'], $this->termpos));

		// multi value delimited by a null byte
#		if(strpos($content, "\x00") !== false){
#			$content = explode("\x00", $content);
#		}

		return [
			'desc'    => $this->decodeString(substr($frame['data'], 1, $this->termpos)),
			'content' => $content,
		];
	}

	/**
	 * 4.3. URL link frames
	 *
	 * URL link frame   "W00" - "WZZ" , excluding "WXX"
	 * (described in 4.3.2.)
	 * Frame size       $xx xx xx
	 * URL              <textstring>
	 */
	protected function W(array $frame):array{
		return ['content' => trim($frame['data'])];
	}

	/**
	 * 4.3.2. User defined URL link frame
	 *
	 * User defined...   "WXX"
	 * Frame size        $xx xx xx
	 * Text encoding     $xx
	 * Description       <textstring> $00 (00)
	 * URL               <textstring>
	 */
	protected function WXX(array $frame):array{
		return [
			'desc'    => $this->decodeString(substr($frame['data'], 1, $this->termpos)),
			'content' => trim(substr($frame['data'], $this->termpos)),
		];
	}

	/**
	 * 4.4. Involved people list
	 *
	 * Involved people list   "IPL"
	 * Frame size             $xx xx xx
	 * Text encoding          $xx
	 * People list strings    <textstrings>
	 */
	protected function IPL(array $frame):array{
		return $this->T($frame);
	}

	/**
	 * 4.5. Music CD Identifier
	 *
	 * Music CD identifier   "MCI"
	 * Frame size            $xx xx xx
	 * CD TOC                <binary data>
	 */
	protected function MCI(array $frame):array{
		return ['content' => $frame['data'],];
	}

	/**
	 * 4.9. Unsychronised lyrics/text transcription
	 *
	 * Unsynced lyrics/text "ULT"
	 * Frame size           $xx xx xx
	 * Text encoding        $xx
	 * Language             $xx xx xx
	 * Content descriptor   <textstring> $00 (00)
	 * Lyrics/text          <textstring>
	 */
	protected function ULT(array $frame):array{
		return $this->COM($frame);
	}

	/**
	 * 4.11. Comments
	 *
	 * Comment                   "COM"
	 * Frame size                $xx xx xx
	 * Text encoding             $xx
	 * Language                  $xx xx xx
	 * Short content description <textstring> $00 (00)
	 * The actual text           <textstring>
	 */
	protected function COM(array $frame):array{
		return [
			'desc'    => $this->decodeString(substr($frame['data'], 4, $this->termpos - 3)),
			'content' => $this->decodeString(substr($frame['data'], $this->termpos)),
			'lang'    => substr($frame['data'], 1, 3),
		];
	}

	/**
	 * 4.15.   Attached picture
	 *
	 * Attached picture   "PIC"
	 * Frame size         $xx xx xx
	 * Text encoding      $xx
	 * Image format       $xx xx xx
	 * Picture type       $xx
	 * Description        <textstring> $00 (00)
	 * Picture data       <binary data>
	 */
	protected function PIC(array $frame):array{
		$format = strtolower(substr($frame['data'], 1, 3));
		$type   = ord(substr($frame['data'], 4, 1));

		if($format === 'jpeg'){
			$format = 'jpg';
		}

		$magicbytes = $this::imageFormatMagicbytes[$format] ?? false;

		if(!$magicbytes){
			return ['rawdata' => bin2hex($frame['data'])];
		}

		$termpos = strpos($frame['data'], "\x00".$magicbytes);
		$image   = substr($frame['data'], $termpos + 1);

		return [
			'desc'     => $this->decodeString(substr($frame['data'], 5, $termpos - 5)),
			'content'  => $image, # 'data:image/'.$format.';base64,'.base64_encode($image),
			'format'   => $format,
			'mime'     => 'image/'.$format,
			'typeID'   => $type,
			'typeInfo' => $this::PICTURE_TYPE[$type] ?? '',
			'hash'     => sha1($image),
		];
	}

	/**
	 * 4.17. Play counter
	 *
	 * Play counter   "CNT"
	 * Frame size     $xx xx xx
	 * Counter        $xx xx xx xx (xx ...)
	 */
	protected function CNT(array $frame):array{
		return ['count' => ID3Helpers::bigEndian2Int($frame['data']) ?? 0];
	}

	/**
	 * 4.18. Popularimeter
	 *
	 * Popularimeter   "POP"
	 * Frame size      $xx xx xx
	 * Email to user   <textstring> $00
	 * Rating          $xx
	 * Counter         $xx xx xx xx (xx ...)
	 *
	 *
	 * The following list details how Windows Explorer reads and writes the POPM frame:
	 *
	 * 224-255 = 5 stars when READ with Windows Explorer, writes 255
	 * 160-223 = 4 stars, writes 196
	 * 096-159 = 3 stars, writes 128
	 * 032-095 = 2 stars, writes 64
	 * 001-031 = 1 star, writes 1
	 */
	protected function POP(array $frame):array{
		$t = strpos($frame['data'], "\x00", 1);

		return [
			'desc'   => substr($frame['data'], 0, $t),
			'rating' => ord(substr($frame['data'], $t + 1, 1)),
#			'count'  => ID3Helpers::bigEndian2Int(substr($frame['data'], $t + 2)) ?? 0,
		];
	}

}


1			<?php
2			/**
3			* Class ID3v22
4			*
5			* @created 22.09.2018
6			* @author smiley <[email protected]>
7			* @copyright 2018 smiley
8			* @license MIT
9			*
10			* @noinspection PhpUnusedParameterInspection
11			*/
12
13			namespace chillerlan\ID3Tag;
14
15			use function bin2hex, ord, sha1, strlen, strpos, strtolower, substr, trim, unpack;
16
17			/**
18			* @link http://id3.org/id3v2-00
19			*/
20			class ID3v22 extends ID3v2Abstract{
21
22			/**
23			* 4. Declared ID3v2 frames
24			*/
25			protected array $declaredFrames = [
26			'BUF' => 'Recommended buffer size',
27			'CNT' => 'Play counter',
28			'COM' => 'Comments',
29			'CRA' => 'Audio encryption',
30			'CRM' => 'Encrypted meta frame',
31			'ETC' => 'Event timing codes',
32			'EQU' => 'Equalization',
33			'GEO' => 'General encapsulated object',
34			'IPL' => 'Involved people list',
35			'LNK' => 'Linked information',
36			'MCI' => 'Music CD Identifier',
37			'MLL' => 'MPEG location lookup table',
38			'PIC' => 'Attached picture',
39			'POP' => 'Popularimeter',
40			'REV' => 'Reverb',
41			'RVA' => 'Relative volume adjustment',
42			'SLT' => 'Synchronized lyric/text',
43			'STC' => 'Synced tempo codes',
44			'TAL' => 'Album/Movie/Show title',
45			'TBP' => 'BPM (Beats Per Minute)',
46			'TCM' => 'Composer',
47			'TCO' => 'Content type',
48			'TCR' => 'Copyright message',
49			'TDA' => 'Date',
50			'TDY' => 'Playlist delay',
51			'TEN' => 'Encoded by',
52			'TFT' => 'File type',
53			'TIM' => 'Time',
54			'TKE' => 'Initial key',
55			'TLA' => 'Language(s)',
56			'TLE' => 'Length',
57			'TMT' => 'Media type',
58			'TOA' => 'Original artist(s)/performer(s)',
59			'TOF' => 'Original filename',
60			'TOL' => 'Original Lyricist(s)/text writer(s)',
61			'TOR' => 'Original release year',
62			'TOT' => 'Original album/Movie/Show title',
63			'TP1' => 'Lead artist(s)/Lead performer(s)/Soloist(s)/Performing group',
64			'TP2' => 'Band/Orchestra/Accompaniment',
65			'TP3' => 'Conductor/Performer refinement',
66			'TP4' => 'Interpreted, remixed, or otherwise modified by',
67			'TPA' => 'Part of a set',
68			'TPB' => 'Publisher',
69			'TRC' => 'ISRC (International Standard Recording Code)',
70			'TRD' => 'Recording dates',
71			'TRK' => 'Track number/Position in set',
72			'TSI' => 'Size',
73			'TSS' => 'Software/hardware and settings used for encoding',
74			'TT1' => 'Content group description',
75			'TT2' => 'Title/Songname/Content description',
76			'TT3' => 'Subtitle/Description refinement',
77			'TXT' => 'Lyricist/text writer',
78			'TXX' => 'User defined text information frame',
79			'TYE' => 'Year',
80			'UFI' => 'Unique file identifier',
81			'ULT' => 'Unsychronized lyric/text transcription',
82			'WAF' => 'Official audio file webpage',
83			'WAR' => 'Official artist/performer webpage',
84			'WAS' => 'Official audio source webpage',
85			'WCM' => 'Commercial information',
86			'WCP' => 'Copyright/Legal information',
87			'WPB' => 'Publishers official webpage',
88			'WXX' => 'User defined URL link frame',
89
90			'ITU' => 'iTunes?',
91			'PCS' => 'Podcast?',
92			'TDR' => 'Release date',
93			'TDS' => '?',
94			'TID' => '?',
95			'WFD' => '?',
96			'CM1' => '?',
97			];
98
99
100			/**
101			* 3.2. ID3v2.2 frames overview (excerpt)
102			*
103			* @inheritDoc
104			*/
105			public function parse(string $rawdata):array{
106			$this->parsedFrames = [];
107			$index = 0;
108			$rawlength = strlen($rawdata);
109
110			while($index < $rawlength){
111
112			// frame name
113			$name = substr($rawdata, $index, 3);
114			$index += 3;
115
116			// name is end tag or garbage
117			if($name === "\x00\x00\x00" \|\| strlen($name) !== 3){
118			break;
119			}
120
121			// frame length bytes
122			$length = substr($rawdata, $index, 3);
123
124			// length data is garbage
125			if(strlen($length) !== 3){
126			break;
127			}
128
129			$length = unpack('N', "\x00".$length)[1] ?? 0;
130			$index += 3;
131
132			// frame length exceeds tag size
133			if($length > $rawlength \|\| $index >= $rawlength){
134			break;
135			}
136
137			// frame is empty
138			if($length < 1){
139			continue;
140			}
141
142			// frame data
143			$data = substr($rawdata, $index, $length);
144			$index += $length;
145
146			// frame is empty
147			if(strlen($data) < 1){
148			continue;
149			}
150
151			$this->setTermpos($data);
152
153			$parsedFrame = $this->parseFrame([
154			'name' => $name,
155			'data' => $data,
156			'length' => $length,
157			]);
158
159			$this->addFrame($name, $parsedFrame);
160			}
161
162			return $this->parsedFrames;
163			}
164
165			/**
166			* 4.2. Text information frames
167			*
168			* Text information identifier "T00" - "TZZ" , excluding "TXX",
169			* described in 4.2.2.
170			* Frame size $xx xx xx
171			* Text encoding $xx
172			* Information <textstring>
173			*/
174			protected function T(array $frame):array{
175			$content = $this->decodeString(substr($frame['data'], 1));
176
177			// lists with a slash-delimiter
178			# if(in_array($frame['name'], ['TP1', 'TCM', 'TXT', 'TOA', 'TOL'], true)){
179			# $content = explode('/', $content);
180			# }
181
182			return ['content' => $content];
183			}
184
185			/**
186			* 4.2.2. User defined text information frame
187			*
188			* User defined... "TXX"
189			* Frame size $xx xx xx
190			* Text encoding $xx
191			* Description <textstring> $00 (00)
192			* Value <textstring>
193			*/
194			protected function TXX(array $frame):array{
195			$content = $this->decodeString(substr($frame['data'], $this->termpos));
196
197			// multi value delimited by a null byte
198			# if(strpos($content, "\x00") !== false){
199			# $content = explode("\x00", $content);
200			# }
201
202			return [
203			'desc' => $this->decodeString(substr($frame['data'], 1, $this->termpos)),
204			'content' => $content,
205			];
206			}
207
208			/**
209			* 4.3. URL link frames
210			*
211			* URL link frame "W00" - "WZZ" , excluding "WXX"
212			* (described in 4.3.2.)
213			* Frame size $xx xx xx
214			* URL <textstring>
215			*/
216			protected function W(array $frame):array{
217			return ['content' => trim($frame['data'])];
218			}
219
220			/**
221			* 4.3.2. User defined URL link frame
222			*
223			* User defined... "WXX"
224			* Frame size $xx xx xx
225			* Text encoding $xx
226			* Description <textstring> $00 (00)
227			* URL <textstring>
228			*/
229			protected function WXX(array $frame):array{
230			return [
231			'desc' => $this->decodeString(substr($frame['data'], 1, $this->termpos)),
232			'content' => trim(substr($frame['data'], $this->termpos)),
233			];
234			}
235
236			/**
237			* 4.4. Involved people list
238			*
239			* Involved people list "IPL"
240			* Frame size $xx xx xx
241			* Text encoding $xx
242			* People list strings <textstrings>
243			*/
244			protected function IPL(array $frame):array{
245			return $this->T($frame);
246			}
247
248			/**
249			* 4.5. Music CD Identifier
250			*
251			* Music CD identifier "MCI"
252			* Frame size $xx xx xx
253			* CD TOC <binary data>
254			*/
255			protected function MCI(array $frame):array{
256			return ['content' => $frame['data'],];
257			}
258
259			/**
260			* 4.9. Unsychronised lyrics/text transcription
261			*
262			* Unsynced lyrics/text "ULT"
263			* Frame size $xx xx xx
264			* Text encoding $xx
265			* Language $xx xx xx
266			* Content descriptor <textstring> $00 (00)
267			* Lyrics/text <textstring>
268			*/
269			protected function ULT(array $frame):array{
270			return $this->COM($frame);
271			}
272
273			/**
274			* 4.11. Comments
275			*
276			* Comment "COM"
277			* Frame size $xx xx xx
278			* Text encoding $xx
279			* Language $xx xx xx
280			* Short content description <textstring> $00 (00)
281			* The actual text <textstring>
282			*/
283			protected function COM(array $frame):array{
284			return [
285			'desc' => $this->decodeString(substr($frame['data'], 4, $this->termpos - 3)),
286			'content' => $this->decodeString(substr($frame['data'], $this->termpos)),
287			'lang' => substr($frame['data'], 1, 3),
288			];
289			}
290
291			/**
292			* 4.15. Attached picture
293			*
294			* Attached picture "PIC"
295			* Frame size $xx xx xx
296			* Text encoding $xx
297			* Image format $xx xx xx
298			* Picture type $xx
299			* Description <textstring> $00 (00)
300			* Picture data <binary data>
301			*/
302			protected function PIC(array $frame):array{
303			$format = strtolower(substr($frame['data'], 1, 3));
304			$type = ord(substr($frame['data'], 4, 1));
305
306			if($format === 'jpeg'){
307			$format = 'jpg';
308			}
309
310			$magicbytes = $this::imageFormatMagicbytes[$format] ?? false;
311
312			if(!$magicbytes){
313			return ['rawdata' => bin2hex($frame['data'])];
314			}
315
316			$termpos = strpos($frame['data'], "\x00".$magicbytes);
317			$image = substr($frame['data'], $termpos + 1);
318
319			return [
320			'desc' => $this->decodeString(substr($frame['data'], 5, $termpos - 5)),
321			'content' => $image, # 'data:image/'.$format.';base64,'.base64_encode($image),
322			'format' => $format,
323			'mime' => 'image/'.$format,
324			'typeID' => $type,
325			'typeInfo' => $this::PICTURE_TYPE[$type] ?? '',
326			'hash' => sha1($image),
327			];
328			}
329
330			/**
331			* 4.17. Play counter
332			*
333			* Play counter "CNT"
334			* Frame size $xx xx xx
335			* Counter $xx xx xx xx (xx ...)
336			*/
337			protected function CNT(array $frame):array{
338			return ['count' => ID3Helpers::bigEndian2Int($frame['data']) ?? 0];
339			}
340
341			/**
342			* 4.18. Popularimeter
343			*
344			* Popularimeter "POP"
345			* Frame size $xx xx xx
346			* Email to user <textstring> $00
347			* Rating $xx
348			* Counter $xx xx xx xx (xx ...)
349			*
350			*
351			* The following list details how Windows Explorer reads and writes the POPM frame:
352			*
353			* 224-255 = 5 stars when READ with Windows Explorer, writes 255
354			* 160-223 = 4 stars, writes 196
355			* 096-159 = 3 stars, writes 128
356			* 032-095 = 2 stars, writes 64
357			* 001-031 = 1 star, writes 1
358			*/
359			protected function POP(array $frame):array{
360			$t = strpos($frame['data'], "\x00", 1);
361
362			return [
363			'desc' => substr($frame['data'], 0, $t),
364			'rating' => ord(substr($frame['data'], $t + 1, 1)),
365			# 'count' => ID3Helpers::bigEndian2Int(substr($frame['data'], $t + 2)) ?? 0,
366			];
367			}
368
369			}
370

chillerlan / php-id3tag

ID3v22::PIC() A last analyzed 2021-05-10 10:21 UTC

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ID3v22::PIC() A
last analyzed 2021-05-10 10:21 UTC