quickwebp / includes / vendor / intervention / image / src / Intervention / Image / Gd / Encoder.php

Encoder.php in QuickWebP – WebP & AVIF Image Optimizer, Compression & SEO for WordPress 2.0.0, at includes/vendor/intervention/image/src/Intervention/Image/Gd/Encoder.php

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1	<?php
2
3	namespace Intervention\Image\Gd;
4
5	use Intervention\Image\Exception\NotSupportedException;
6
7	class Encoder extends \Intervention\Image\AbstractEncoder
8	{
9	/**
10	* Processes and returns encoded image as JPEG string
11	*
12	* @return string
13	*/
14	protected function processJpeg()
15	{
16	ob_start();
17	imagejpeg($this->image->getCore(), null, $this->quality);
18	$this->image->mime = image_type_to_mime_type(IMAGETYPE_JPEG);
19	$buffer = ob_get_contents();
20	ob_end_clean();
21
22	return $buffer;
23	}
24
25	/**
26	* Processes and returns encoded image as PNG string
27	*
28	* @return string
29	*/
30	protected function processPng()
31	{
32	ob_start();
33	$resource = $this->image->getCore();
34	imagealphablending($resource, false);
35	imagesavealpha($resource, true);
36	imagepng($resource, null, -1);
37	$this->image->mime = image_type_to_mime_type(IMAGETYPE_PNG);
38	$buffer = ob_get_contents();
39	ob_end_clean();
40
41	return $buffer;
42	}
43
44	/**
45	* Processes and returns encoded image as GIF string
46	*
47	* @return string
48	*/
49	protected function processGif()
50	{
51	ob_start();
52	imagegif($this->image->getCore());
53	$this->image->mime = image_type_to_mime_type(IMAGETYPE_GIF);
54	$buffer = ob_get_contents();
55	ob_end_clean();
56
57	return $buffer;
58	}
59
60	/**
61	* Processes and returns encoded image as WEBP string
62	*
63	* @return string
64	*/
65	protected function processWebp()
66	{
67	if ( ! function_exists('imagewebp')) {
68	throw new NotSupportedException(
69	"Webp format is not supported by PHP installation."
70	);
71	}
72
73	ob_start();
74	imagepalettetotruecolor($this->image->getCore());
75	imagealphablending($this->image->getCore(), true);
76	imagesavealpha($this->image->getCore(), true);
77	imagewebp($this->image->getCore(), null, $this->quality);
78	$this->image->mime = defined('IMAGETYPE_WEBP') ? image_type_to_mime_type(IMAGETYPE_WEBP) : 'image/webp';
79	$buffer = ob_get_contents();
80	ob_end_clean();
81
82	return $buffer;
83	}
84
85	/**
86	* Processes and returns encoded image as TIFF string
87	*
88	* @return string
89	*/
90	protected function processTiff()
91	{
92	throw new NotSupportedException(
93	"TIFF format is not supported by Gd Driver."
94	);
95	}
96
97	/**
98	* Processes and returns encoded image as BMP string
99	*
100	* @return string
101	*/
102	protected function processBmp()
103	{
104	if ( ! function_exists('imagebmp')) {
105	throw new NotSupportedException(
106	"BMP format is not supported by PHP installation."
107	);
108	}
109
110	ob_start();
111	imagebmp($this->image->getCore());
112	$this->image->mime = defined('IMAGETYPE_BMP') ? image_type_to_mime_type(IMAGETYPE_BMP) : 'image/bmp';
113	$buffer = ob_get_contents();
114	ob_end_clean();
115
116	return $buffer;
117	}
118
119	/**
120	* Processes and returns encoded image as ICO string
121	*
122	* @return string
123	*/
124	protected function processIco()
125	{
126	throw new NotSupportedException(
127	"ICO format is not supported by Gd Driver."
128	);
129	}
130
131	/**
132	* Processes and returns encoded image as PSD string
133	*
134	* @return string
135	*/
136	protected function processPsd()
137	{
138	throw new NotSupportedException(
139	"PSD format is not supported by Gd Driver."
140	);
141	}
142
143	/**
144	* Processes and returns encoded image as AVIF string
145	*
146	* @return string
147	*/
148	protected function processAvif()
149	{
150	if ( ! function_exists('imageavif')) {
151	throw new NotSupportedException(
152	"AVIF format is not supported by PHP installation."
153	);
154	}
155
156	ob_start();
157	$resource = $this->image->getCore();
158	imagepalettetotruecolor($resource);
159	imagealphablending($resource, true);
160	imagesavealpha($resource, true);
161	imageavif($resource, null, $this->quality);
162	$this->image->mime = defined('IMAGETYPE_AVIF') ? image_type_to_mime_type(IMAGETYPE_AVIF) : 'image/avif';
163	$buffer = ob_get_contents();
164	ob_end_clean();
165
166	return $buffer;
167	}
168
169	/**
170	* Processes and returns encoded image as HEIC string
171	*
172	* @return string
173	*/
174	protected function processHeic()
175	{
176	throw new NotSupportedException(
177	"HEIC format is not supported by Gd Driver."
178	);
179	}
180	}
181