quickwebp / includes / vendor / intervention / image / src / Intervention / Image / AbstractEncoder.php

AbstractEncoder.php in QuickWebP – WebP & AVIF Image Optimizer, Compression & SEO for WordPress 3.3.0, at includes/vendor/intervention/image/src/Intervention/Image/AbstractEncoder.php

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1	<?php
2
3	namespace Intervention\Image;
4
5	use Intervention\Image\Exception\InvalidArgumentException;
6	use Intervention\Image\Exception\NotSupportedException;
7
8	abstract class AbstractEncoder
9	{
10	/**
11	* Buffer of encode result data
12	*
13	* @var string
14	*/
15	public $result;
16
17	/**
18	* Image object to encode
19	*
20	* @var Image
21	*/
22	public $image;
23
24	/**
25	* Output format of encoder instance
26	*
27	* @var string
28	*/
29	public $format;
30
31	/**
32	* Output quality of encoder instance
33	*
34	* @var int
35	*/
36	public $quality;
37
38	/**
39	* Processes and returns encoded image as JPEG string
40	*
41	* @return string
42	*/
43	abstract protected function processJpeg();
44
45	/**
46	* Processes and returns encoded image as PNG string
47	*
48	* @return string
49	*/
50	abstract protected function processPng();
51
52	/**
53	* Processes and returns encoded image as GIF string
54	*
55	* @return string
56	*/
57	abstract protected function processGif();
58
59	/**
60	* Processes and returns encoded image as TIFF string
61	*
62	* @return string
63	*/
64	abstract protected function processTiff();
65
66	/**
67	* Processes and returns encoded image as BMP string
68	*
69	* @return string
70	*/
71	abstract protected function processBmp();
72
73	/**
74	* Processes and returns encoded image as ICO string
75	*
76	* @return string
77	*/
78	abstract protected function processIco();
79
80	/**
81	* Processes and returns image as WebP encoded string
82	*
83	* @return string
84	*/
85	abstract protected function processWebp();
86
87	/**
88	* Processes and returns image as Avif encoded string
89	*
90	* @return string
91	*/
92	abstract protected function processAvif();
93
94	/**
95	* Processes and returns image as Heic encoded string
96	*
97	* @return string
98	*/
99	abstract protected function processHeic();
100
101	/**
102	* Process a given image
103	*
104	* @param Image $image
105	* @param string $format
106	* @param int $quality
107	* @return Image
108	*/
109	public function process(Image $image, $format = null, $quality = null)
110	{
111	$this->setImage($image);
112	$this->setFormat($format);
113	$this->setQuality($quality);
114
115	switch (strtolower($this->format)) {
116
117	case 'data-url':
118	$this->result = $this->processDataUrl();
119	break;
120
121	case 'gif':
122	case 'image/gif':
123	$this->result = $this->processGif();
124	break;
125
126	case 'png':
127	case 'image/png':
128	case 'image/x-png':
129	$this->result = $this->processPng();
130	break;
131
132	case 'jpg':
133	case 'jpeg':
134	case 'jfif':
135	case 'image/jp2':
136	case 'image/jpg':
137	case 'image/jpeg':
138	case 'image/pjpeg':
139	case 'image/jfif':
140	$this->result = $this->processJpeg();
141	break;
142
143	case 'tif':
144	case 'tiff':
145	case 'image/tiff':
146	case 'image/tif':
147	case 'image/x-tif':
148	case 'image/x-tiff':
149	$this->result = $this->processTiff();
150	break;
151
152	case 'bmp':
153	case 'ms-bmp':
154	case 'x-bitmap':
155	case 'x-bmp':
156	case 'x-ms-bmp':
157	case 'x-win-bitmap':
158	case 'x-windows-bmp':
159	case 'x-xbitmap':
160	case 'image/ms-bmp':
161	case 'image/x-bitmap':
162	case 'image/x-bmp':
163	case 'image/x-ms-bmp':
164	case 'image/x-win-bitmap':
165	case 'image/x-windows-bmp':
166	case 'image/x-xbitmap':
167	$this->result = $this->processBmp();
168	break;
169
170	case 'ico':
171	case 'image/x-ico':
172	case 'image/x-icon':
173	case 'image/vnd.microsoft.icon':
174	$this->result = $this->processIco();
175	break;
176
177	case 'psd':
178	case 'image/vnd.adobe.photoshop':
179	$this->result = $this->processPsd();
180	break;
181
182	case 'webp':
183	case 'image/webp':
184	case 'image/x-webp':
185	$this->result = $this->processWebp();
186	break;
187
188	case 'avif':
189	case 'image/avif':
190	$this->result = $this->processAvif();
191	break;
192
193	case 'heic':
194	case 'image/heic':
195	case 'image/heif':
196	$this->result = $this->processHeic();
197	break;
198
199	default:
200	throw new NotSupportedException(
201	"Encoding format ({$this->format}) is not supported."
202	);
203	}
204
205	$this->setImage(null);
206
207	return $image->setEncoded($this->result);
208	}
209
210	/**
211	* Processes and returns encoded image as data-url string
212	*
213	* @return string
214	*/
215	protected function processDataUrl()
216	{
217	$mime = $this->image->mime ? $this->image->mime : 'image/png';
218
219	return sprintf('data:%s;base64,%s',
220	$mime,
221	base64_encode($this->process($this->image, $mime, $this->quality))
222	);
223	}
224
225	/**
226	* Sets image to process
227	*
228	* @param Image $image
229	*/
230	protected function setImage($image)
231	{
232	$this->image = $image;
233	}
234
235	/**
236	* Determines output format
237	*
238	* @param string $format
239	*/
240	protected function setFormat($format = null)
241	{
242	if ($format == '' && $this->image instanceof Image) {
243	$format = $this->image->mime;
244	}
245
246	$this->format = $format ? $format : 'jpg';
247
248	return $this;
249	}
250
251	/**
252	* Determines output quality
253	*
254	* @param int $quality
255	*/
256	protected function setQuality($quality)
257	{
258	$quality = is_null($quality) ? 90 : $quality;
259	$quality = $quality === 0 ? 1 : $quality;
260
261	if ($quality < 0 \|\| $quality > 100) {
262	throw new InvalidArgumentException(
263	'Quality must range from 0 to 100.'
264	);
265	}
266
267	$this->quality = intval($quality);
268
269	return $this;
270	}
271	}
272