wp-optimize / vendor / rosell-dk / webp-convert / src / Convert / Converters / ConverterTraits / EncodingAutoTrait.php

EncodingAutoTrait.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.2.7, at vendor/rosell-dk/webp-convert/src/Convert/Converters/ConverterTraits/EncodingAutoTrait.php

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1	<?php
2
3	//namespace WebPConvert\Convert\Converters\BaseTraits;
4	namespace WebPConvert\Convert\Converters\ConverterTraits;
5
6	/**
7	* Trait for converters that supports lossless encoding and thus the "lossless:auto" option.
8	*
9	* @package WebPConvert
10	* @author Bjørn Rosell <[email protected]>
11	* @since Class available since Release 2.0.0
12	*/
13	trait EncodingAutoTrait
14	{
15
16	abstract protected function doActualConvert();
17	abstract public function getSource();
18	abstract public function getDestination();
19	abstract public function setDestination($destination);
20	abstract public function getOptions();
21	abstract protected function setOption($optionName, $optionValue);
22	abstract protected function logLn($msg, $style = '');
23	abstract protected function log($msg, $style = '');
24	abstract protected function ln();
25	abstract protected function logReduction($source, $destination);
26
27	public function supportsLossless()
28	{
29	return true;
30	}
31
32	/** Default is to not pass "lossless:auto" on, but implement it.
33	*
34	* The Stack converter passes it on (it does not even use this trait)
35	* WPC currently implements it, but this might be configurable in the future.
36	*
37	*/
38	public function passOnEncodingAuto()
39	{
40	return false;
41	}
42
43	private function convertTwoAndSelectSmallest()
44	{
45	$destination = $this->getDestination();
46	$destinationLossless = $destination . '.lossless.webp';
47	$destinationLossy = $destination . '.lossy.webp';
48
49	$this->logLn(
50	'Encoding is set to auto - converting to both lossless and lossy and selecting the smallest file'
51	);
52
53	$this->ln();
54	$this->logLn('Converting to lossy');
55	$this->setDestination($destinationLossy);
56	$this->setOption('encoding', 'lossy');
57	$this->doActualConvert();
58	$this->log('Reduction: ');
59	$this->logReduction($this->getSource(), $destinationLossy);
60	$this->ln();
61
62	$this->logLn('Converting to lossless');
63	$this->setDestination($destinationLossless);
64	$this->setOption('encoding', 'lossless');
65	$this->doActualConvert();
66	$this->log('Reduction: ');
67	$this->logReduction($this->getSource(), $destinationLossless);
68	$this->ln();
69
70	if (filesize($destinationLossless) > filesize($destinationLossy)) {
71	$this->logLn('Picking lossy');
72	unlink($destinationLossless);
73	rename($destinationLossy, $destination);
74	} else {
75	$this->logLn('Picking lossless');
76	unlink($destinationLossy);
77	rename($destinationLossless, $destination);
78	}
79	$this->setDestination($destination);
80	$this->setOption('encoding', 'auto');
81	}
82
83	protected function runActualConvert()
84	{
85	if (!$this->passOnEncodingAuto() && ($this->getOptions()['encoding'] == 'auto') && $this->supportsLossless()) {
86	$this->convertTwoAndSelectSmallest();
87	} else {
88	$this->doActualConvert();
89	}
90	}
91	}
92